Adaptive coverage for UMTS macrocells based on situation awareness

S Sharma, AG Spilling, AR Nix

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)
333 Downloads (Pure)


The paper examines the capability of extending base station sector beams in order to assume coverage in a partially or fully failed neighbouring cell. Increasing the transmit power of the sector to reach out for new users is not possible in UMTS since it increases interference in the system. This paper considers how adaptive coverage can be implemented in practice. Analysis suggests that performance is downlink-limited. A balanced link power algorithm is required to provide the extra power for increasing the range capability of the sector. Furthermore, it is found that up to 25% of users (premium rate customers) in a failed heavily loaded cell can be supported by sector extension. This figure approaches 100% for a lightly loaded cell, or the more practical case of sector failure. In all cases, SA significantly enhances the number of users that can be supported anywhere in the failed cell.
Translated title of the contributionAdaptive Coverage for UMTS Macrocells based on Situation Awareness
Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference (VTC Spring-2001), Rhodes, Greece
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2786 - 2790
Number of pages5
ISBN (Print)0780367286
Publication statusPublished - May 2001
Event53rd Vehicular Technology Conference 2001 (VTC 2001-Spring) - Rhodes, Greece
Duration: 1 May 2001 → …


Conference53rd Vehicular Technology Conference 2001 (VTC 2001-Spring)
Period1/05/01 → …

Bibliographical note

Other: Rhodes
Rose publication type: Conference contribution

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  • adaptive control
  • cellular radio


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