Reservation multiple access
First Claim
1. A method for accessing a base station performed at a mobile station in a communication system, comprising:
- selecting a signature sequence from a plurality of signature sequences;
transmitting an access request utilizing the selected signature sequence from the mobile station;
determining if a channel assignment message, which is responsive to the access request and is modulated with at least one of the selected signature sequence or a signature associated with the selected signature, is received from the base station; and
transmitting another access request, if the channel assignment message is determined as not being received.
0 Assignments
0 Petitions
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.
61 Citations
50 Claims
-
1. A method for accessing a base station performed at a mobile station in a communication system, comprising:
-
selecting a signature sequence from a plurality of signature sequences; transmitting an access request utilizing the selected signature sequence from the mobile station; determining if a channel assignment message, which is responsive to the access request and is modulated with at least one of the selected signature sequence or a signature associated with the selected signature, is received from the base station; and transmitting another access request, if the channel assignment message is determined as not being received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A mobile station comprising:
-
a controller configured to select a signature sequence from a plurality of signature sequences; a modulator configure to modulate the selected signature sequence in an access request; and a transmitter configured to transmit the access request, wherein the controller is further configured to determine if a channel assignment message, which is responsive to the access request and is modulated with at least one of the selected signature sequence or a signature associated with the selected signature, from a base station is received and wherein the transmitter is configured to transmit another access request, if the channel assignment message is determined as not being received by the controller. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
-
24. An apparatus comprising:
-
means for selecting a signature sequence from a plurality of signature sequences; means for transmitting an access request utilizing the 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 at least one of the selected signature sequence or a signature associated with the selected signature, is received from a base station; and a transmitter configured to transmit another access request, if the channel assignment message is determined as not being received. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A computer-readable media comprising instructions that are utilized by a controller, the instructions comprising:
-
instructions for selecting a signature sequence from a plurality of signature sequences; instructions for transmitting an access request utilizing the 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 at least one of the selected signature sequence or a signature associated with the selected signature, 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 (37, 38)
-
-
39. A method for accessing a base station performed at a mobile station in a communication system, comprising:
-
selecting a signature sequence from a plurality of signature sequences; transmitting an access request utilizing the selected signature sequence from the mobile station; determining if a channel assignment message, which is responsive to the access request and includes a field which designates the signature sequence selected from the plurality of signature sequences, is received from the base station; and transmitting another access request, if the channel assignment message is determined as not being received. - View Dependent Claims (40, 41)
-
-
42. A mobile station comprising:
-
a controller configured to select a signature sequence from a plurality of signature sequences; a modulator configure to modulate the selected signature sequence in an access request; and a transmitter configured to transmit the modulated access request, wherein the controller is further configured to determine if a channel assignment message, which is responsive to the access request and includes a field which designates the signature sequence selected from the plurality of signature sequences, is received from the base station, from a base station is received and wherein the transmitter is configured to transmit another access request, if the channel assignment message is determined as not being received by the controller. - View Dependent Claims (43, 44)
-
-
45. An apparatus comprising:
-
means for selecting a signature sequence from a plurality of signature sequences; means for transmitting an access request utilizing the selected signature sequence from a mobile station; means for determining if a channel assignment message, which is responsive to the access request and includes a field which designates the signature sequence selected from the plurality of signature sequences, is received from a base station; and a transmitter configured to transmit another access request, if the channel assignment message is determined as not being received. - View Dependent Claims (46, 47)
-
-
48. A computer-readable media comprising instructions that are utilized by a controller, the instructions comprising:
-
instructions for selecting a signature sequence from a plurality of signature sequences; instructions for transmitting an access request utilizing the selected signature sequence from a mobile station; instructions for determining if a channel assignment message, which is responsive to the access request and includes a field which designates the signature sequence selected from the plurality of signature sequences, 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 (49, 50)
-
Specification