Transmission Timing - A Control Approach to Distributed Uplink Scheduling in WCDMA
2004 (English)In: Proceedings of the 2004 American Control Conference, 2004, 1667-1672 vol.2 p.Conference paper (Refereed)
Centralized control and coordination of the connections in a wireless network is not possible in practice. To keep the delay from measurement instants to actuating the decisions, distributed control is required. This paper focuses on the uplink (from mobiles to base stations) and discusses distributing the decision of when and when not to transmit data (distributed scheduling) to the mobiles. The scheme, uplink transmission timing, utilizes mobile transmitter power control feedback from the base station receiver to determine whether the channel is favorable or not compared to the average channel condition. Thereby, the battery consumption and disturbing power to other connections are reduced. The algorithm can be described as a feedback control system. Some transient behaviors are analyzed using systems theory, and supported by wireless network simulations of a system with a WCDMA (Wideband Code Division Multiple Access) radio interface as in most 3G systems.
Place, publisher, year, edition, pages
2004. 1667-1672 vol.2 p.
UMTS, Power Control, Distributed systems
National CategoryEngineering and Technology Control Engineering
IdentifiersURN: urn:nbn:se:liu:diva-24059Local ID: 3618ISBN: 0-7803-8335-4OAI: oai:DiVA.org:liu-24059DiVA: diva2:244375
2004 American Control Conference, Boston, MA, USA, June-July, 2004