resources for CBS. Allocates radio resources for CBS based on traffic volume requirements indicated by BMC. Configuration for CBS discontinuous reception. Configures the lower layers (L1, L2) of the UE when the latter listen to the resources allocated for CBS. Timing advance control. Controls the operation of timing advance, which is appli- cable only to the TDD mode. References 3GPP, Technical Specification Group Services and System Aspects, General UMTS Architecture (3G TS 23.101. version 3.01, 1999-04). The UMTS Development Platform 3GPP, Technical Specification Group Services and System Aspects, Evolution of the GSM platform towards UMTS (3G TS 23.920. version 3.1, 1999-04). 3GPP, Architectural Requirements for Release 1999 (3G TS 23.121. version 3.1.0, 1999- Hentschel, T. and Fettweis, G., "Software Radio Receivers", in CDMA Techniques for Third Generation Mobile Systems, Kluwer, Dordrecht, pp. 257-283, 1999. 3GPP, Technical Specification Group Services and System Aspects, Iu Principles (3G TS 23.930. version 3.0.0, 1999-07). 3GPP, Technical Specification Radio Access Network Group, UTRAN Overall Description (3G TS 25.401 version 3.1.0, 2000-01). UMTS 23.10 UMTS Access Stratum Services and Functions. TS 25.442: Implementation Specific O&M Transport. 3GPP, Technical Specification Radio Access Network Group, Radio Interface Protocol Architecture (3G TS 25.301 version 3.4.0, 2000-03). 3G TS 24.007: Mobile Radio Interface Signalling Layer 3; General Aspects. [11] 3GPP, Technical Specification Radio Access Network Group, Services Provided by the Physical Layer (3G TS 25.302 version 3.4.0, 2000-03). [12] 3GPP, Technical Specification Radio Access Network Group, MAC Protocol Specifica- tions (3G TS 25.321 version 3.3.0, 2000-03). [13] 3GPP, Technical Specification Radio Access Network Group, RLC Protocol Specifications (3G TS 25.322 version 3.2.0, 2000-03). [14] 3GPP, Technical Specification Radio Access Network Group, PDCP Protocol Specifica- tions (3G TS 25.323 version 3.1.0, 2000-03). [15] 3GPP, Technical Specif