Method for operating multiple overlapping wireless networks
First Claim
Patent Images
1. A method of operating a plurality of wireless networks, comprising:
- transmitting first signals in a first network at a first carrier frequency;
transmitting second signals in a second network at a second carrier frequency, the second carrier frequency being different from the first carrier frequency,wherein the first carrier frequency is offset from a base carrier frequency by an amount equal to n times an offset frequency,wherein the second carrier frequency is offset from the base carrier frequency by an amount equal to m times the offset frequency,wherein n is an integer, m is an integer, and m does not equal n, andwherein the first carrier frequency and the second carrier frequency are chosen such that a first phase of first chips in the first signal will drift with respect to a second phase of second chips in the second signal.
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Abstract
A method is provided for operating a plurality of overlapping wireless networks such that they do not interfere with each other. This is accomplished by having each network transmit at a frequency that is offset from a base frequency by an integer multiple of an offset frequency. The offset frequency is generally a small fraction of the base frequency so that the spectral properties of each network are roughly the same. However, each network will transmit at a unique frequency with respect to all of the other overlapping networks. The offset values are preferably symmetrical around zero, and the offset for one network can be zero.
10 Citations
27 Claims
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1. A method of operating a plurality of wireless networks, comprising:
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transmitting first signals in a first network at a first carrier frequency; transmitting second signals in a second network at a second carrier frequency, the second carrier frequency being different from the first carrier frequency, wherein the first carrier frequency is offset from a base carrier frequency by an amount equal to n times an offset frequency, wherein the second carrier frequency is offset from the base carrier frequency by an amount equal to m times the offset frequency, wherein n is an integer, m is an integer, and m does not equal n, and wherein the first carrier frequency and the second carrier frequency are chosen such that a first phase of first chips in the first signal will drift with respect to a second phase of second chips in the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating a plurality of wireless networks, comprising:
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transmitting first through kth signals in first through kth networks at first through kth carrier frequencies, respectively; and offsetting the ith carrier frequency from a base carrier frequency by an amount equal to ni times an offset frequency, wherein k is an integer greater than 1, wherein i varies from 1 to k, and wherein none of n1 through it ni has the same integer value, and wherein the first through kth carrier frequencies are chosen such that a first through kth phases of first through kth chips in the first through kth signals, respectfully, will drift with respect to each other. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification