Apparatus and method for modulating ranging signals in a broadband wireless access communication system
First Claim
1. A method for transmitting ranging information from at least one base station to a subscriber station comprising the steps of:
- transmitting first code information for generating a ranging code by the subscriber station, wherein the first code information is different from first code information of a neighboring base station; and
transmitting second code information for generating the ranging code by the subscriber station, wherein the second code information is different from second code information of a second subscriber station with a cell region of the base station.
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Abstract
An method and apparatus for transmitting ranging information from at least one base station to subscriber stations and generating a ranging signal by the subscriber station using received ranging information in a Broadband Wireless Access (BWA) communication system including a plurality of neighbor cells and a plurality of the subscriber stations located in each cell region. A first code generator generates a first code using different first code information received from the base stations in the neighbor cells allocated the first code information. A second code generator generates a second code using second code information received by each of the subscriber stations existing in cell regions of the neighbor cells. A ranging signal generator generates a new ranging signal by combining the first code with the second code.
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Citations
28 Claims
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1. A method for transmitting ranging information from at least one base station to a subscriber station comprising the steps of:
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transmitting first code information for generating a ranging code by the subscriber station, wherein the first code information is different from first code information of a neighboring base station; and
transmitting second code information for generating the ranging code by the subscriber station, wherein the second code information is different from second code information of a second subscriber station with a cell region of the base station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for transmitting ranging information from at least one base station to a subscriber station and generating a ranging code by the subscriber station using received ranging information comprising the steps of:
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receiving first code information from the base station, wherein the first code information is different from first code information of a neighboring base station;
receiving second code information from the base station, wherein the second code information is different from second code information of a second subscriber station with a cell region of the base station; and
generating a new ranging code by combining the first code information with the second code information. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for transmitting ranging information from at least one base station to subscriber station and generating a ranging code by a subscriber station using received ranging information, comprising:
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a first code generator for generating a first code using first code information received from the base station, wherein the first code information is different from first code information of a neighboring base station;
a second code generator for generating a second code using second code information received from the base station, wherein the second code information is different from second code information of a second subscriber station with a cell region of the base station; and
a ranging code generator for generating a new ranging code by combining the first code with the second code. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification