Content for TR 24.826 Word version: 11.0.0
4 Overview
5 Analysis of signalling procedures between the UE and core network for energy saving scenarios
6 Potential optimizations and enhancements in procedures
7 Conclusions
$ Change history
4 Overview p. 9
5 Analysis of signalling procedures between the UE and core network for energy saving scenarios p. 11
5.1 Switch-off/on of 3GPP macro cells p. 11
5.1.1 General description p. 11
5.1.2 Overlaid intra-RAT p. 11
5.1.3 Non-overlaid intra-RAT p. 11
5.1.4 Inter-RAT p. 12
5.1.5 Key issue: Registration signalling resulting from switch-off/on of macro cells p. 12
5.1.5.1 Overlaid intra-RAT case (E-UTRAN) p. 12
5.1.5.2 Inter-RAT case (E-UTRAN target for switch-off) p. 14
5.1.6 Key issue: Cross layer aspects p. 14
5.1.7 Key issue: Idle mode UEs with emergency bearer services p. 15
5.1.8 Key issue: Impact of inter-RAT energy saving on signalling over SGs p. 15
5.2 Switch-off/on of 3GPP home cells p. 16
5.2.1 General description p. 16
5.2.2 Key issue: Incidental synchronization of H(e)NB switch-off/switch-on p. 16
5.3 Switch-off/on of WLAN access networks in 3GPP I-WLAN p. 16
5.3.1 General description p. 16
5.3.2 Key issue: Latency associated with WLAN access network re-selection after switch-off (WLAN 3GPP IP access) p. 17
5.3.3 Key issue: Mass effect resulting from WLAN access network re-selection after switch-off p. 17
5.4 Switch-off/on of non-3GPP access networks p. 18
5.4.1 General description p. 18
5.4.2 Key issue: Degradation of service due to switch-off of non-3GPP access networks p. 18
5.5 Power adaptation for 3GPP macro cells p. 19
5.6 Common issues p. 21
5.6.1 Key issue: Increased ANDSF load p. 21
5.6.2 Key issue: Signalling overload for multi-access and flow mobility p. 22
5.7 Additional analysis p. 22
6 Potential optimizations and enhancements in procedures p. 24
6.1 Solution "Optimized configuration of tracking areas and TAI lists" p. 24
6.1.1 Description p. 24
6.1.2 Benefits p. 24
6.1.3 Limitations p. 24
6.1.4 Impacts on 3GPP Specifications p. 24
6.2 Solution "Adding time dependence to configuration settings in MOs" p. 24
6.2.1 Description p. 24
6.2.2 Benefits p. 25
6.2.3 Limitations p. 25
6.2.4 Impacts on 3GPP Specifications p. 26
6.3 Solution "Dynamic radio access network sharing" p. 26
6.3.1 Description p. 26
6.3.2 Benefits p. 26
6.3.3 Limitations p. 27
6.3.4 Impacts on 3GPP Specifications p. 27
6.4 Solution "Network based handling for multi-access and flow mobility" p. 27
6.4.1 Description p. 27
6.4.2 Benefits p. 28
6.4.3 Limitations p. 28
6.4.4 Impacts on 3GPP Specifications p. 28
6.5 Solution "Activation times in ANDSF data" p. 29
6.5.1 Description p. 29
6.5.1.1 Variant 1 p. 29
6.5.1.2 Variant 2 p. 29
6.5.2 Benefits p. 29
6.5.3 Limitations p. 29
6.5.4 Impacts on 3GPP Specifications p. 30
7 Conclusions p. 31
$ Change history p. 33
