Appeal No. 2002-1114
Application No. 09/154,100
the operation of the cellular radio system has three available
channels, which are channels 1, 2 and 3. For all cells in the
cellular radio system, there are defined certain channels that
are divided into so-called priority groups. In Figures 1a-1c,
the cellular radio system has three priority groups. See page 4
of Appellants' specification. In Figure 1a, because the load is
slight throughout the network, each cell only uses the first
priority group. In Figure 1b, it is assumed that the load in the
middle cell 101 increases, in which case this cell uses the first
priority group and also the second priority group. As the load
further increases, Figure 1c shows cell 101 using the third
priority group as well as the first and second priority groups.
See page 5 of Appellants' specification.
Independent claims 1 and 7 are representative of the claimed
invention and are reproduced as follows:
1. A method for controlling the use of channels in first and
second proximately disposed base stations of a cellular radio
system, which base stations are in radio communication with the
mobile stations of the cellular radio system by using mutually
essentially orthogonal channels, said method comprising the steps
of:
dividing said channels into groups, each group having a priority
that is different from the priorities of the other groups,
said first base station having a selected channel group with a
highest priority,
22
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007