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UBC Theses and Dissertations
A new distributed channel assignment scheme for cellular systems Ho, Kar Wing
Abstract
The number of cellular subscribers world-wide is expected to grow rapidly in the next decade. Since the radio spectrum available for a cellular system is limited, designing an effective channel assignment scheme is of great importance. In this thesis, a new channel assignment scheme, distributed MAXMIN with interference information (DMAXMIN_WI), is proposed. The new scheme is developed from the centralized MAXMIN scheme. By sharing interference information with neighboring cells, the host cell (the cell in which a channel needs to be assigned) performs a channel assignment which attempts to minimize the effect on other co-channel users. The performance of DMAXMIN_WI is compared with those of existing channel assignment schemes using computer simulation. Intra-cell reassignments are carried out in order to reduce the call dropping probability. Results show that DMAXMIN_WI has the best overall performance and requires few intra-cell reassignments. The effectiveness of a performance analysis technique, the Snapshot Analysis, and its relationship to traditional analysis are studied. A new approach to performance analysis, the Slot Viewpoint Analysis, is proposed. This new approach is used to show that Snapshot Analysis cannot replace traditional analysis.
Item Metadata
Title |
A new distributed channel assignment scheme for cellular systems
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2000
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Description |
The number of cellular subscribers world-wide is expected to grow rapidly in the next
decade. Since the radio spectrum available for a cellular system is limited, designing an effective
channel assignment scheme is of great importance. In this thesis, a new channel assignment
scheme, distributed MAXMIN with interference information (DMAXMIN_WI), is proposed. The
new scheme is developed from the centralized MAXMIN scheme. By sharing interference
information with neighboring cells, the host cell (the cell in which a channel needs to be assigned)
performs a channel assignment which attempts to minimize the effect on other co-channel users.
The performance of DMAXMIN_WI is compared with those of existing channel assignment
schemes using computer simulation. Intra-cell reassignments are carried out in order to reduce the
call dropping probability. Results show that DMAXMIN_WI has the best overall performance
and requires few intra-cell reassignments.
The effectiveness of a performance analysis technique, the Snapshot Analysis, and its
relationship to traditional analysis are studied. A new approach to performance analysis, the Slot
Viewpoint Analysis, is proposed. This new approach is used to show that Snapshot Analysis
cannot replace traditional analysis.
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Extent |
3671182 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-07-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0064816
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2000-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.