Method of scheduling regular signal transmission in a...

Details Method of scheduling regular signal transmission in a... Method of scheduling regular signal transmission in a...

2006-04-18

2006-04-18

Pham, Chi (Department: 2667)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S442000

Reexamination Certificate

active

07031292

ABSTRACT:
Scheduling of regular signal transmissions, e.g., between a plurality of wireless terminals and a base station in a cellular network in a manner designed to reduce or minimize recurring periodic interference encountered by individual wireless terminals from transmission in neighboring cells is described. Signal transmissions of wireless terminals in each cell are scheduled on a group slot basis. A group slot comprises a number of time slots. Each wireless terminal serviced by a particular base station is assigned a time slot in a group slot used by the particular base station. A given wireless terminal is assigned different time slots in successive group slots as specified by a hopping function. Adjacent, base stations e.g., base stations of physically neighboring or overlapping cells, use distinct, i.e., different, hopping functions for the scheduling purpose thereby avoiding correlation of slots between overlapping or adjacent cells during consecutive group slots.

REFERENCES:
patent: 5506848 (1996-04-01), Drakopoulos et al.
patent: 6940824 (2005-09-01), Shibutani

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