Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-05-15
2007-05-15
Pham, Chi (Department: 2616)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S342000, C370S441000, C370S479000, C455S450000, C375S130000
Reexamination Certificate
active
09745873
ABSTRACT:
A CDMA packet data system is disclosed that can dynamically allocate channels in the CDMA packet data system). Using the disclosed dynamic allocation method, the utilization efficiency of multiple channels is increased and the transmission rate of packet data is increased. This is because a static, specific channel is not allocated to each terminal, but rather the system dynamically allocates multiple channels to each mobile terminal. Thus, the base station provides information on all channels used in the system to multiple terminals. The terminals check the occupied state of each channel before transmitting packet data, and thereafter transmitting packet data through an unoccupied channel.
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Buczynski, et al.; “Performance of a DS-CDMA System with Dynamic Channel Allocation and Soft Handover”; IEEE 5th International Symposium on Spread Spectrum Techniques and Applications; Sep. 2-4, 1998; vol. 2; pp. 420-424.
Ked & Associates LLP
LG Nortel Co., Ltd.
Pham Chi
Phan Tri H.
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