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683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.2 Test purpose | 3) verify that a TTY compatible MS, with TTY mode enabled, correctly sets bit 6 of Octet 3a in the Bearer Capability Information Element to 1 when receiving a mobile terminated call.
4) To verify that a TTY compatible MS, with TTY mode disabled, correctly sets bit 6 of Octet 3a in the Bearer Capability Information Elem... |
683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.3 Method of test | 90.1.2.3.1 void |
683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.3.2 Initial conditions | System Simulator:
- 1 cell, default parameters.
Mobile Station:
- The MS is in MM-state “idle, updated” with valid TMSI and CKSN. |
683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.3.3 Final foreseen state of the MS | U0, null. |
683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.3.4 Test Procedure | a) The MS is set to TTY mode using the normal MMI. A mobile terminated call is established following the generic call set-up procedure for mobile terminating speech calls.
b) After receipt of the CALL CONFIRMED message from the MS, the SS shall disconnect the call.
c) TTY mode is disabled in the MS using the normal MMI... |
683b5b8a98f7b1390ddd5516ea9247a2 | 51.010-1 | 90.1.2.4 Test requirement | 1) In step a), the MS shall send a CALL CONFIRMED message where bit 6 of Octet 3a of the Bearer Capability Information Element is set to 1.
2) In step c), the MS shall send a CALL CONFIRMED message where bit 6 of Octet 3a of the Bearer Capability Information Element is set to 0. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 1 Scope | The present document contains the results from the study of improvements for Machine-type Communications in GERAN.
The following items are in the scope of the study:
- GERAN enhancements for Smart metering
- Enhancements which enable or improve efficient use of RAN resources and/or which lower complexity when a large n... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 2 References | The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
- Fo... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 3 Definitions, symbols and abbreviations | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 3.1 Definitions | For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].
MTC Device: A MTC Device is a UE equipped for Machine Type Communication, which comm... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 3.2 Symbols | Void. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 3.3 Abbreviations | For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905 [1].)
CCCH Common Control Channel
GERANIMTC GERAN Improvements for Machine Type ... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4 Areas for study to effectively support MTC in GERAN | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.1 General | Sub-clause 4 contains the outcome of the study of GERAN enhancements driven by the prioritized general MTC functions as defined in [3] that are considered applicable to GERAN specifications. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2 Overload control | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2.1 General | Overload Control refers to use cases Radio Network Congestion, Signalling Network and Core Network Congestion as described in [2] Annex A. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2.2 Description and Analysis | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2.2.1 CCCH Overload Control | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2.2.1.1 Description and Analysis | The large amount of access attempts that can be generated from mobile stations used for MTC is believed to increase the load and cause congestion on the common control channel (CCCH) and therefore may negatively impact legacy services.
The legacy pre-release 10 RR connection establishment procedure is not sufficient fo... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 4.2.2.1.2 Result | By using the implicit reject procedure, the network can effectively protect the CCCH from being overloaded by mobile stations configured with low access priority.
The objective of CCCH overload control in MTC study has been met with the implicit reject procedure with respect to preventing overload of CCCH hence minimis... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 5 Void | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6 Common assumptions | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.1 Traffic model | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.1.1 General | The traffic model is assumed to be mobile originated, meaning that the MTC server will not poll/request reports from the MTC devices. Hence, the MTC devices will require access to the network rather autonomously and thus the network need not page the MTC devices.
6.1.2 CCCH Signalling
In order to capture different net... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.1.2.1 Time limited deterministic event distribution | Following considerations are made:
Assuming that all events take place between t=0 and t=T , the intensity is described by the distribution p(t) and the total number of devices in the cell is X, then the number of arrivals in the i:th TDMA frame is given by:
Equation 1: Number of arrivals in a given TDMA-frame
Any dist... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.1.2.1.1 Beta distribution | The benefit of this model is:
• This deterministic traffic model simplifies simulation (by virtue of being deterministic). It may be considered to approximate the traffic load generated by multiple devices accessing the network quasi-simultaneously (the selection of a time window of 1 second is arbitrary).
, where is ... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2 Methodology | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.1 Simulator methodology | A single cell evaluation of possible congestion of the CCCH and PDCH is used.
Either a single cell simulator (sometimes also referred to as a protocol level simulator) or system level type simulator can be used where the basic difference is in that the system level simulator models dynamic interference from neighbourin... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.1.1 Network trace | In order to get a simplified distribution of the interfering signal that network level simulations are run to collect the signal distributions of the interferer.
Further on, the derived interference distribution is presented in tabulated format to allow for easier comparison and verification of contributions from diffe... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.1.2 Network load | The resource allocation from the background traffic in neighbouring cells is assumed to be fully allocated (constant transmission), transmitted at full power (no power control) using 8PSK modulation (for assumptions on power back-off see Table 3). |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.1.3 Cell under investigation | For the cell under investigation all traffic is assumed to be MTC devices while the background noise is assumed to be best effort PS traffic modelled as described in clause 6.1. This should be seen as a worst case scenario in terms of network access attempts.
6.2.1.4 Service coverage
Full service coverage of stationa... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2 Simulation assumptions | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.1 General | This clause defines the parameters required for the simulations which may be required to conduct the study. The parameters are referenced where appropriate.
Table 3: Network level simulator parameters
Parameter
Value
Unit
Comment
Sectors per site
3
Sector antenna pattern
65º deg H-plane,
max TX gain 15
dBi
18 dBi anten... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.2 Path loss | It is assumed that the gain (path loss + shadow fading + antenna gain) from a given MS to its serving BTS is the same in UL and DL. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.3 Channel propagation | It is assumed that the external interferers experience a TU3-channel while the MTC devices are assumed to be stationary and subject to TU0-channel propagation. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.4 External interference | It is assumed that the external interference levels are uncorrelated between the DL and UL, i.e. that uncorrelated samples are used from the respective distributions. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.5 Application protocol | It is assumed that the MTC application is using UDP as a transport protocol with acknowledgments on the application layer from the MTC server to the MTC client will be transmitted, i.e. there will both be PUANs and data blocks (containing application Acks) transmitted in the DL for the PDCH evaluation. Details are left... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.5.1 IP version | The IP version to use for the evaluation is left FFS. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.6 Link model | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.6.1 CCCH | A simplistic link-to-system interface is assumed.
It is assumed that only a total co-channel interference level needs to be assumed for each burst. Adjacent channel suppression is assumed to be 18 dB. To capture the correct combined channel propagation behavior of the total interfering signal, impacts on fast fading is... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.6.1.1 RACH (CCCH/U) | For possible reception of an access burst, CRACH/(IRACH + ITOT) needs to be greater than 9 – 3 = 6 dB. RACH reference interference ratio is specified at 9 dB (Channel propagation TU3, 3GPP TS 45.005) and an additional gain of 3 dB is assumed for a dual antenna MRC type BTS architecture.
On top of this an error rate of ... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.6.1.2 AGCH (CCCH/D) | For possible reception of an access grant, CAGCH/ITOT needs to be greater than 9 dB. AGCH reference interference ratio is specified at 9 dB (Channel propagation TU3, 3GPP TS 45.005).
On top of this an error rate of 22% is added (AGCH reference interference performance, TU3, TS 45.005).
NOTE: The figures above are bein... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.6.2 PDCH | Vendor specific L2S mapping methodology is to be used that can be verified against a set of pre-defined interferer scenarios.
Common assumptions for the UL receiver include:
• Dual antenna base station
• MRC receiver algorithm.
Common assumptions for the DL receiver include:
• Single antenna mobile station |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.2.2.7 Number of CCCHs | The CCCH performance is evaluated using a single CCCH. |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.3 Output | |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.3.1 General | All results should be presented as per indicated below. It should be noted that this list is not exhaustive and that outputs not currently listed cannot be precluded that could affect the conclusions of this work.
Upon evaluation of different proposals, the KPIs of services with a higher priority should be seen to take... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.3.2 Overall MTC simulation and evaluation output | MTC success rate = Number of successfully received reports (i.e. all application level payload associated with this report) sent from the device to the network divided by the total number of arrivals.
MTC delay = The time it takes for a MTC device to successfully transfer its application level payload, as from when it ... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.3.3 CCCH signalling output | Access success rate = Number of successful Immediate Assignment procedures, see sub-clause 3.3.1.1 in [4] divided by total number of Immediate Assignment procedures, inclusive of both RACH and AGCH.
Access attempts needed = Number of access attempts per successfully completed Immediate Assignment procedures, inclusive ... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 6.3.4 PDCH traffic output | TBF Blocking Rate = Blocking rate due to insufficient resources (e.g. USF and TFI identifiers), which makes it impossible for the network to assign uplink PDCHs to the MTC devices. The output should be differentiated between different causes.
MTC payload transfer delay = The time it takes for a MTC device to successful... |
686035b507b3b9278dc8a7741151e4bb | 43.868 | 7 Summary and conclusions | The impacts on GERAN specifications identified in sub-clause 4 should be used as a basis for additional normative specification work.
Annex A:
Change history
Change history
Date
TSG #
TSG Doc.
CR
Rev
Subject/Comment
Old
New
2012-11
56
GP-121309
Approved at TSG GERAN#56
2.0.0
12.0.0
2014-02
61
GP-140199
0001
1
Correctio... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 1 Scope | The present document 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:
- analysing UE idle mode procedures and signalling between the UE and core network result... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 2 References | The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non‑specific.
- For a specific reference, subsequent revisions do not apply.
- Fo... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 3 Definitions, symbols and abbreviations | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 3.1 Definitions | For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
Macro cell: generic term used for all cell types under operator’s control ... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 3.2 Abbreviations | For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1]. |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 4 Overview | One main energy saving mechanism in the context of this Technical Report is realized by switch-off of radio equipment on the network side. As a consequence, a UE currently being served by the radio equipment subject to switch-off will have to find an alternative, either in the same RAT (if possible by coverage, this wo... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5 Analysis of signalling procedures between the UE and core network for energy saving scenarios | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1 Switch-off/on of 3GPP macro cells | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.1 General description | The following main characteristics of 3GPP RATs GERAN, UTRAN and E-UTRAN need to be taken into account in the study of energy saving:
- clear definition of idle and active mode;
- definition of registration areas (LAs, RAs, TAs);
- fully optimized handovers; and
- fully (operator) planned deployment.
General descriptio... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.2 Overlaid intra-RAT | A capacity enhancing cell, subject to switch-off for energy saving, is placed into the (full) coverage realized by other cells (see figure 5.1.2-1). Such a cell can be either totally within the range of one cell or it can intersect with multiple cells of the base coverage. The relative position of a capacity-enhancing ... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.3 Non-overlaid intra-RAT | The cell that is subject to switch-off has no alternative coverage, thus some cell adaption has to take place, in order not to disrupt service for the UEs due to a coverage "hole" of this RAT (and e.g. with no capability for an alternative RAT). As shown in figure 5.1.3-1, registration area boundaries will be distorted... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.4 Inter-RAT | This case is illustrated in figure 5.1.4-1.
Figure 5.1.4-1: Coverage and registration areas for inter-RAT energy saving with 3GPP macro cells |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.5 Key issue: Registration signalling resulting from switch-off/on of macro cells | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.5.1 Overlaid intra-RAT case (E-UTRAN) | The situation is shown in figure 5.1.5-1 derived from the use case given in the annex B of 3GPP TS 32.551 [6] (it can be similarly applied to the other 3GPP RATs). Only idle mode UEs are considered here, as UEs in connected mode can be handled by the network via timely handovers to cells remaining permanently active.
C... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.5.2 Inter-RAT case (E-UTRAN target for switch-off) | For this subclause it is assumed that GERAN/UTRAN provides the overall coverage and is used as fallback after E-UTRAN has been switched off.
At this time a similar issue as described in subclause 5.1.5.1 arises more massively (independent of a cell location on a registration area boundary), because all idle mode UEs wi... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.6 Key issue: Cross layer aspects | In the current 3GPP system various control features exist which govern the selection of domains for delivery of services (e.g. voice, SMS). As an example, it may be an operator's preference to handle voice communication via IMS/PS only; if no HSPA is rolled out then effectively only E-UTRAN would remain for voice. This... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.7 Key issue: Idle mode UEs with emergency bearer services | UEs in idle mode with emergency bearer services possibly await a callback from e.g. an emergency answering point or need to establish an outgoing emergency call; both can be deemed critical and in some cases life-saving.
The switch-off of cells for energy saving could result in a UE becoming temporarily unavailable for... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.1.8 Key issue: Impact of inter-RAT energy saving on signalling over SGs | For a UE configured to use CS fallback, according to figure 4.2.2.1 in 3GPP TS 29.118 [9] the SGs state has to be moved to SGs-NULL if a Location Update Request is received at VLR via A, Iu or Gs interface. That is the case some time after E-UTRAN radio access has been turned off, as the UE has no means to perform comb... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.2 Switch-off/on of 3GPP home cells | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.2.1 General description | Switch-off of radio equipment in the home cell deployment scenario seems to be an attractive target case for energy saving, due to the expected mass of equipment (seen in total, i.e. for the whole population). Key characteristics of this scenario are:
- in many cases the overlay by the macro network exists (except in t... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.2.2 Key issue: Incidental synchronization of H(e)NB switch-off/switch-on | For marketing reasons and potentially also due to stronger legal requirements for energy saving, the support of the simplest energy saving feature, namely switch-off during periods of expected inactivity (e.g. according to a daily or weekly schedule), may become a standard feature. In this case configuration settings f... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.3 Switch-off/on of WLAN access networks in 3GPP I-WLAN | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.3.1 General description | Switching off a WLAN access network has the consequence that it will no longer be detected in active or passive scanning (see subclause 4.3.1 in 3GPP TS 24.234 [4]), therefore it would drop out as a candidate for 3GPP I-WLAN initial procedures. On the other hand, if switch-off for energy saving is foreseen at all, dete... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.3.2 Key issue: Latency associated with WLAN access network re-selection after switch-off (WLAN 3GPP IP access) | A compact view of what happens (for one UE) when a WLAN access network is switched-off is illustrated in figure 5.3.2-1 (non-roaming case; for simplicity WAG is not shown, and it is assumed that the same PDG can be reached).
Figure 5.3.2-1: Compact view of procedures after switch-off of WLAN access network in 3GPP I-WL... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.3.3 Key issue: Mass effect resulting from WLAN access network re-selection after switch-off | WLANs can be considered a means to enhance capacity for mobile users in hotspots. If their switch-off is foreseen, the resulting mass effect has to be analysed; this can also be derived from figure 5.3.2-1, differentiating between procedures local to every UE and procedural parts running on the same network elements fo... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.4 Switch-off/on of non-3GPP access networks | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.4.1 General description | The switch-off of a non-3GPP radio access can occur on a varying scale, from a single access point to a whole metro area network or a country-wide set of hotspots. As indicated in table 4.1, with current 3GPP specifications it can be handled as a (non-optimized) handover on IP layer. Handover procedures in 3GPP TS 23.4... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.4.2 Key issue: Degradation of service due to switch-off of non-3GPP access networks | NOTE: the terms "planned" / "unplanned" handover are not formally defined in 3GPP and used here for the sake of concise description.
Non-3GPP accesses have been integrated into EPS with the aim to provide service continuity across accesses (currently by virtue of non-optimized, IP based handovers) and as seamless as po... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.5 Power adaptation for 3GPP macro cells | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.5.1 General description | NOTE: This subclause is intended as illustration and baseline for CT1’s analysis. It does not mandate anything for RAN groups’ work; in case of conflict between this and RAN workgroups’ description the latter takes precedence.
Power adaptation of capacity enhancing cells can be utilized for energy saving in the case of... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.5.2 Key issue: Coverage boundaries | NOTE 1: This subclause does not mandate anything for RAN groups’ work; in case of conflict between this and RAN workgroups’ description the latter takes precedence.
Although the principle of power adaptation of macro cells as described in subclause 5.5.1 avoids coverage holes in the (overall, outdoor) macro cell covera... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.6 Common issues | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.6.1 Key issue: Increased ANDSF load | ANDSF can be interrogated by a UE for delivery of access network discovery information for non-3GPP accesses at any time after a secure connection has been set up between these two entities. The triggers for such queries are not specified.
There are potential relations between switch-off of RATs and UE-ANDSF communicat... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.6.2 Key issue: Signalling overload for multi-access and flow mobility | A UE can initiate, via the maintained access network, the removal of an access network from a PDN connection, after it has detected the loss of the associated radio coverage (see figure 5.5-1 of 3GPP TS 23.261 [17]). This procedure is started by a DSMIPv6 Binding Update message sent from the UE to the PDN GW/Home Agent... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.7 Additional analysis | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 5.7.1 Potential interaction between machine type communication and energy saving | Some type of machine type communication, e.g. reading out meter/sensor values or stock lists, is flexible with regards to the transaction time and is therefore thought to be suitable for handling in off-peak, especially night, hours. But this is also exactly the target time window for energy saving; therefore potential... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6 Potential optimizations and enhancements in procedures | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.1 Solution "Optimized configuration of tracking areas and TAI lists" | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.1.1 Description | This solution addresses key issues "Tracking Area Update signalling resulting from switch-off/on of macro cells" described in subclause 5.1.5 and "Idle mode UEs with emergency bearer services" as described in subclause 5.1.7.
The solution consists in overall configuration
1) of TAs in the network; or
2) TAI lists to be... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.1.2 Benefits | No standardization effort is required for this solution. |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.1.3 Limitations | No full flexibility is possible, e.g. for deployment of capacity enhancing cells under changing conditions.
The effort for guaranteeing the optimized configuration increases with the number of affected cells and thus can become large if energy saving is applied massively (e.g. network wide). |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.1.4 Impacts on 3GPP Specifications | None. |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.2 Solution "Adding time dependence to configuration settings in MOs" | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.2.1 Description | This solution addresses key issue "Cross layer aspects” as described in subsection 5.1.6, in particular for inter-RAT energy saving.
The solution consists in adding time parameters to the following configuration parameters in OMA DM MOs, related to voice calls and multimedia sessions and defined in 3GPP TS 24.167 [10] ... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.2.2 Benefits | The solution reduces the amount of signalling for domain transfer (which is also time critical) both for the network and affected UEs, if these need to originate communication just before a RAT is switched off for the purpose of inter-RAT energy saving. Also, a potential but unnecessary deterioration of service experie... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.2.3 Limitations | These operator preferences are specific for selected services (voice calls and multimedia sessions). These settings are currently not per PLMN; thus either a differentiation per PLMN has to be introduced, or the described time dependence is to be limited to the HPLMN.
This solutions requires changes in UEs, and therefo... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.2.4 Impacts on 3GPP Specifications | Additions in 3GPP TS 24.167 [10] and 3GPP TS 24.216 [11], and enhancements in specifications of corresponding procedures (3GPP TS 24.301 [12] and 3GPP TS 24.237 [13]). |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.3 Solution "Dynamic radio access network sharing" | |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.3.1 Description | This solution addresses all key issues listed in subclause 5.1.
Network Sharing with a Multi-Operator Core Network (MOCN), as defined in 3GPP TS 23.251 [14], is an established means to leverage reduced operator's expense for radio access infrastructure. Even though currently it is assumed to be firmly and permanently c... |
2d016e763d82d2bbce817fafc33663a6 | 24.826 | 6.3.2 Benefits | This solution allows to save the energy consumption of the RAN of at least one operator completely during off-peak time. |
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