03.713GPPFunctional descriptionLocation Services (LCS)Release 1999Stage 2TS

6.4.1 Signalling using an SDCCH

Figures 11 and 12 show the protocol layers used to support signaling between an SMLC and a Type A LMU with an NSS and BSS based SMLC, respectively, using an SDCCH on the Um interface.

Figure 11: Signalling between an SMLC and a Type A LMU with NSS based SMLC using an SDCCH

Figure 12: Signalling between an SMLC and Type A LMU with BSS based SMLC using an SDCCH

6.4.2 Signalling using a TCH

Figures 13 to 15 show the protocol layers that can be used to support signaling between an SMLC and a Type A LMU with an NSS and BSS based SMLC using a TCH on the Um interface. The TCH is assumed to support either transparent or non-transparent synchronous data and may be provided in a multislot configuration. The main usage would be for O&M data and SW download – e.g. during offpeak hours.

Figure 13: Signalling between an SMLC and a Type A LMU with NSS based SMLC using a TCH in transparent mode

Figure 14: Signalling between an SMLC and a Type A LMU with NSS based SMLC using a TCH in non-transparent (NT) mode

Figure 15: Signalling between an SMLC and a Type A LMU with BSS based SMLC using a TCH