Apparatus for making a random access to the reverse common...

Details Apparatus for making a random access to the reverse common... Apparatus for making a random access to the reverse common...

2008-04-22

2008-04-22

Qureshi, Afsar (Department: 2616)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S338000, C370S342000, C375S240260, C375S149000

Reissue Patent

active

11218277

ABSTRACT:
An apparatus for making a plurality of terminals have a random access to the reverse common channel system in CDMA, comprises code synchronization detection information broadcast means provided in the base station for broadcasting the state information of a channel card in real time for the terminals to recognize the code synchronization detection when the code synchronization of a certain data is acquired through performing the code synchronization of the preambles transmitted from the terminals through the reverse common channel, and data transmission determination, means provided in the terminals for making the terminals to have attempted data transmission in the same time slot with the data of the code synchronization detection continuously transmit data and the other terminals stop data transmission.

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patent: 6078572 (2000-06-01), Tanno et al.
patent: 6240083 (2001-05-01), Wright et al.
Tae-Joon Kim et al.; “On Performance Improvements of Spread Slotted Aloha Network with CLSP/CC”;IEICE Trans Fundamentals, vol. E80-A, No. 12;pp. 2493-2499; 1997.
Kiyoshi Toshimitsu et al.; “A Novel Spread Slotted Aloha System with Channel Load Sensing Protocol”;IEEE Journal on Selected Areas in Communications, vol. 12, No. 4;1994.
Masato Saito et al.; “Throughout Improvement of CDMA Slotted ALOHA Systems”;IEICE Trans. Commun. vol. E80-B, No. 1;pp. 74-79; 1997.

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