Method and apparatus of establishing access channel in wireless communication systems

• US 8,331,285 B2
• Filed: 10/27/2006
• Issued: 12/11/2012
• Est. Priority Date: 10/27/2005
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Prakash, Rajat
• Primary Examiner(s): CHAN, SAI MING
• Application Number:
  US12/091,513
• Publication Number:
  US 20090175217A1
• Time in Patent Office: 2,237 Days
• Field of Search: 370/328, 370/331
• US Class Current: 370/328
• CPC Class Codes: H04B 7/216 Code division or spread-spectrum multiple access [CDMA, SSMA]
• CPC Class Codes: H04B 7/2628 using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] H04B7/2618 takes precedence
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/16 Deriving transmission power values from another channel
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 52/58 Format of the TPC bits
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: Y02D 30/00 Reducing energy consumption in communication networks

Abstract

A method and apparatus for establishing an access channel in a wireless communication system is provided, comprising receiving an AccessGrant on a carrier on which the last probe was transmitted and ending an access probe transmission upon receiving the AccessGrant. A method and apparatus is further provided, comprising determining expiration of an access grant timer and ending an access probe transmission upon the expiration of the timer. A method and apparatus is further provided comprising receiving an IdleState.IdleHO indication and ending an access probe transmission upon receiving the IdleState.IdleHO indication. A method and apparatus is further provided receiving a new AttemptAccess command, wherein the AttemptAccess command is processed after a current probe transmission ends and ending an access probe transmission on receiving the new AttemptAccess command.

Claims

1. A method of establishing an access channel in a wireless communication system, comprising:

determining by an access terminal whether an access grant is received on a carrier on which an access probe of a current AttemptAccess command was transmitted;

determining by the access terminal whether an access grant timer has expired;

determining by the access terminal whether an IdleState.IdleHO indication is received;

determining by the access terminal whether a new AttemptAccess command is received during processing of the current AttemptAccess command, wherein the new AttemptAccess command is processed after a probe transmission of the current AttemptAccess command ends; and

ending further transmission of the current AttemptAccess command access probe if any of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

5. The method of claim 1, wherein the current AttemptAccess command was transmitted and the access grant is received under control of a Default Access Channel MAC (Media Access Control) protocol.

6. The method of claim 1, wherein a message for communicating the access grant is controlled by a Shared Signaling MAC (Media Access Control) protocol.

7. The method of claim 1, further comprising:

continuing, by the access terminal, to transmit the current AttemptAccess command on the carrier if none of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

2. A non-transitory computer-readable medium comprising computer executable instructions that, in response to execution, cause at least one computing device to perform operations comprising:

determining whether an access grant is received on a carrier on which an access probe of a current AttemptAccess command was transmitted;

determining whether an access grant timer has expired;

determining whether an IdleState.IdleHO indication is received;

determining whether a new AttemptAccess command is received during processing of the current AttemptAccess command, wherein the new AttemptAccess command is processed after a probe transmission of the current AttemptAccess command ends; and

ending further transmission of the current AttemptAccess command access probe if any of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

8. The computer-readable medium of claim 2, wherein the current AttemptAccess command is transmitted and the access grant is received under control of a Default Access Channel MAC (Media Access Control) protocol.

9. The computer-readable medium of claim 2, wherein a message for communicating the access grant is controlled by a Shared Signaling MAC (Media Access Control) protocol.

10. The computer-readable medium of claim 2, further comprising:

continuing to transmit the current AttemptAccess command on the carrier if none of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

3. An apparatus operable in a wireless communication system, the apparatus comprising:

means for determining whether an access grant is received on a carrier on which the an access probe of a current AttemptAccess command was transmitted;

means for determining whether an access grant timer has expired;

means for determining whether an IdleState.IdleHO indication is received;

means for determining whether a new AttemptAccess command is received during processing of the current AttemptAccess command, wherein the new AttemptAccess command is processed after a probe transmission of the current AttemptAccess command ends; and

means for ending further transmission of the current AttemptAccess command access probe if any of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

11. The apparatus of claim 3, wherein the current AttemptAccess command was transmitted and the access grant is received under control of a Default Access Channel MAC (Media Access Control) protocol.

12. The apparatus of claim 3, wherein a message for communicating the access grant is controlled by a Shared Signaling MAC (Media Access Control) protocol.

13. The apparatus of claim 3, further comprising:

means for continuing to transmit the current AttemptAccess command on the carrier if none of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

4. A system for establishing an access channel in a wireless communication system, comprising:

a processor configured to;

determine whether an access grant is received on a carrier on which an access probe of a current AttemptAccess command was transmitted;

determine whether an access grant timer has expired;

determine whether an IdleState.IdleHO indication is received;

determine whether a new AttemptAccess command is received during processing of the current AttemptAccess command, wherein the new AttemptAccess command is processed after a probe transmission of the current AttemptAccess command ends; and

end further transmission of the current AttemptAccess command access probe if any of the determining whether an access grant is received, the determining whether an access grant timer has expired, the determining whether an IdleState.IdleHO indication is received, or the determining whether a new AttemptAccess command is received results in a positive determination.

14. The system of claim 4, wherein the current AttemptAccess command was transmitted and the access grant is received under control of a Default Access Channel MAC (Media Access Control) protocol.

15. The system of claim 4, wherein a message for communicating the access grant is controlled by a Shared Signaling MAC (Media Access Control) protocol.

16. The system of claim 4, wherein the processor is further configured to:

continue to transmit the current AttemptAccess command on the carrier if it is determined that none of an access grant is received, an access grant timer has expired, an IdleState.IdleHO indication is received, and a new AttemptAccess command is received.