TR 24.826
CT1
★
Study on Impacts on Signalling
between User Equipment (UE)
and Core Network
from Energy Saving
use "3GPP‑Page" to get the Word version
for a better overview, the Table of Contents (ToC) is reproduced
for a better overview, the Table of Contents (ToC) is reproduced
V11.0.0 (Wzip)
2011/06 33 p.
Rapporteur: Mr. Punz, Gottfried
This TR contains the result of the study on the impacts on signalling between the UE and core network
when energy saving measures are applied to network entities.
The study aims, within the defined CT1 work areas, at:
The study also evaluates potential enhancements to 3GPP specifications under CT1 responsibility.
This study takes into account decisions made by other 3GPP working groups in their related work.
- analysing UE idle mode procedures and signalling between the UE and core network resulting from switch on/off of radio equipment in all types of 3GPP accesses, including home cell deployment and I-WLAN, as well as power adaptation of radio equipment (where applicable);
- performing a corresponding analysis for connected mode UEs;
- analysing similar impacts from activation status of non-3GPP access networks;
- documenting limitations, weaknesses and inefficiencies in these procedures, with emphasis on mass effects in the signalling between the UE and core network; and
- studying potential optimizations and enhancements to these procedures.
full Table of Contents for TR 24.826 Word version: 11.0.0
1 Scope Word-p. 6
2 References Word-p. 7
3 Definitions, symbols and abbreviations Word-p. 8
4 Overview Word-p. 9
5 Analysis of signalling procedures between the UE and core network for energy saving scenarios Word-p. 11
5.1 Switch-off/on of 3GPP macro cells
6 Potential optimizations and enhancements in procedures Word-p. 24
5.1.1 General description
5.1.2 Overlaid intra-RAT
5.1.3 Non-overlaid intra-RAT 
5.1.4 Inter-RAT Word-p. 12
5.1.5 Key issue: Registration signalling resulting from switch-off/on of macro cells
5.2 Switch-off/on of 3GPP home cells Word-p. 16
5.1.4 Inter-RAT Word-p. 12
5.1.5 Key issue: Registration signalling resulting from switch-off/on of macro cells
5.1.5.1 Overlaid intra-RAT case (E-UTRAN)
5.1.5.2 Inter-RAT case (E-UTRAN target for switch-off) Word-p. 14
5.1.6 Key issue: Cross layer aspects
5.1.7 Key issue: Idle mode UEs with emergency bearer services Word-p. 15
5.1.8 Key issue: Impact of inter-RAT energy saving on signalling over SGs
5.2.1 General description
5.2.2 Key issue: Incidental synchronization of H(e)NB switch-off/switch-on
5.3 Switch-off/on of WLAN access networks in 3GPP I-WLAN
5.3.1 General description
5.3.2 Key issue: Latency associated with WLAN access network re-selection after switch-off (WLAN 3GPP IP access) Word-p. 17
5.3.3 Key issue: Mass effect resulting from WLAN access network re-selection after switch-off
5.4 Switch-off/on of non-3GPP access networks Word-p. 18
5.4.1 General description
5.4.2 Key issue: Degradation of service due to switch-off of non-3GPP access networks
5.5 Power adaptation for 3GPP macro cells Word-p. 19
5.6 Common issues Word-p. 21
5.6.1 Key issue: Increased ANDSF load
5.6.2 Key issue: Signalling overload for multi-access and flow mobility Word-p. 22
5.7 Additional analysis
6.1 Solution "Optimized configuration of tracking areas and TAI lists"
6.2 Solution "Adding time dependence to configuration settings in MOs"
7 Conclusions Word-p. 31
A Change history Word-p. 33
6.2.1 Description
6.2.2 Benefits Word-p. 25
6.2.3 Limitations
6.2.4 Impacts on 3GPP Specifications Word-p. 26
6.3 Solution "Dynamic radio access network sharing"
6.4 Solution "Network based handling for multi-access and flow mobility"
6.5 Solution "Activation times in ANDSF data" Word-p. 29
