초록 ▼

A method for processing multiple random access requests is disclosed in which a base station transmits an acquisition indicator signal, which indicates that the base station has detected the presence of a random access transmission. The acquisition indicator can be generated based on the amount of e

A method for processing multiple random access requests is disclosed in which a base station transmits an acquisition indicator signal, which indicates that the base station has detected the presence of a random access transmission. The acquisition indicator can be generated based on the amount of energy received on the random access channel (e.g., as opposed to the correct/incorrect decoding of a random access message). Consequently, the delay between the beginning of the random access transmission and the beginning of the acquisition indicator transmission is significantly shorter than the delay to the beginning of an acknowledgment transmission based on the reception of a correctly decoded random access message. If a mobile station does not receive a positive acquisition indicator, it should interrupt the present transmission and start to re-transmit the random access burst in the next time slot, while modifying the transmission power level accordingly between the successive re-transmissions.

대표청구항 ▼

A method for processing multiple random access requests is disclosed in which a base station transmits an acquisition indicator signal, which indicates that the base station has detected the presence of a random access transmission. The acquisition indicator can be generated based on the amount of e

A method for processing multiple random access requests is disclosed in which a base station transmits an acquisition indicator signal, which indicates that the base station has detected the presence of a random access transmission. The acquisition indicator can be generated based on the amount of energy received on the random access channel (e.g., as opposed to the correct/incorrect decoding of a random access message). Consequently, the delay between the beginning of the random access transmission and the beginning of the acquisition indicator transmission is significantly shorter than the delay to the beginning of an acknowledgment transmission based on the reception of a correctly decoded random access message. If a mobile station does not receive a positive acquisition indicator, it should interrupt the present transmission and start to re-transmit the random access burst in the next time slot, while modifying the transmission power level accordingly between the successive re-transmissions. r. 1, 1999 (Attorney Docket SUN-P3814-JTF). Toong Shoon Chan, et al., "Parallel Architecture Support for High-Speed Protocol Processing," Feb. 1, 1997, Microprocessors And Microsystems, vol. 20, No. 6, pp. 325-339. Peter Newman, et al., "IP Switching and Gigabit Routers," IEEE Communications Magazine, vol. 335, No. 1, Jan. 1997, pp. 64-69. Francois Le Faucheur, "IETF Multiprotocol Label Switching (MPLS) Architecture," IEEE International Conference, Jun. 22, 1998, pp. 6-15. F. Hallsall, "Data Communications, Computer Networks and Open Systems," Electronic Systems Engineering Series, 1996, pp. 451-452. R. Cole, et al. "IP Over ATM: A Framework Document," IETF Online, Apr. 1996, pp. 1-31. Sally Floyd & Van Jacobson, Random Early Detection Gateways for Congestion Avoidance, Aug., 1993, IEEE/ACM Transactions on Networking. U.S. patent application Ser. No. 08/893,862, entitled "Mechanism for Reducing Interrupt Overhead in Device Drivers," filed Jul. 11, 1997, inventor Denton Gentry.