Point to multipoint cell plan and migration

Details Point to multipoint cell plan and migration Point to multipoint cell plan and migration

2003-01-13

2008-05-13

Feild, Joseph (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C320S118000, C455S447000, C455S446000, C455S562100

Reexamination Certificate

active

07372829

ABSTRACT:
The present invention relates to cell plans and cell plan changes in point to multipoint systems (PMP). A cell plan arrangement is provided comprising cells having four 90° sectors to which individual sector at least one of four orthogonal channels, such as channels distinguished by two frequencies and two polarisations, are allocated. A method is furthermore provided allowing gradual sector-by-sector migration into a 45° sector cell plan. The cell plan offers advantageous carrier to interference ration (C/I) improvements.

REFERENCES:
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patent: 6445926 (2002-09-01), Boch et al.
patent: 6748218 (2004-06-01), Johnson et al.
patent: 6847820 (2005-01-01), Hageltorn et al.
patent: 7177598 (2007-02-01), Klein et al.
patent: 2001/0055970 (2001-12-01), Muramoto et al.
patent: WO 9535601 (1995-12-01), None
Swedish Patent Office, International Search Report for PCT/SE03/00035, dated Aug. 22, 2003.

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