| US 7,519,041 B2 | ||
| Method for improving random access channel performance | ||
| Zhijun Cai, Euless, Tex. (US) | ||
| Assigned to Motorola, Inc., Schaumburg, Ill. (US) | ||
| Filed on Dec. 22, 2005, as Appl. No. 11/318,245. | ||
| Prior Publication US 2007/0147310 A1, Jun. 28, 2007 | ||
| Int. Cl. H04Q 7/20 (2006.01) | ||
| U.S. Cl. 370—342 [370/347] | 18 Claims |
| 1. A method for improving random access channel performance by a user equipment in a wireless communication system, the method
comprising:
receiving resource usage information transmitted from a base station over an indicator channel;
determining an available resource based on the received resource usage information using negative acknowledgment (NAK) and
acknowledgement (ACK) feedback signals from the base station associated with an assigned access service class, wherein determining
the available resource is performed before entering access resource selection and transmission periods; and
transmitting an access attempt signal and data packets over a random access channel of the assigned access service class,
the access attempt signal adapted to the available resource to request the base station to permit the user equipment access
to the random access channel.
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