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Content for  TR 25.705  Word version:  13.0.0

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0  IntroductionWord‑p. 5

Small data applications are expected to be a large growth area, with the potential for billions of connected devices. In many cases, this type of traffic poses different service requirements compared to conventional traffic types. For an important segment of applications, the requirements on power consumption and coverage versus data rate and latency may vary.
The phenomenal success of WCDMA technologies means that up to the 2020 timescale and beyond, WCDMA will be a dominant 3GPP technology with a large coverage footprint. Furthermore, WCDMA devices are already available at a cost level that is suitable for the machine oriented communication market. In order to serve the market opportunities, many operators likely need to provide enhanced support for small data applications with a coverage footprint that WCDMA can provide.
The current generation of WCDMA specifications has been optimized for mobile broadband traffic. To ensure that small data applications are properly addressed, the specifications should enable requirements on coverage in challenging device locations, low device power consumption and machine type data rates to be met.
This Technical Report (TR) contains the investigations performed by the TSG RAN Working Groups involved in the study of small data transmission enhancements for UMTS.
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1  ScopeWord‑p. 6

The study on small data transmissions enhancements for UMTS has as a target to investigate and provide solutions in the areas of coverage, signalling optimization, support of massive deployment of devices, and power savings taking into consideration minimizing the impact on the physical layer, legacy terminals, and networks [2].

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.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
3GPP RP-141711, "Study on Small Data Transmission Enhancements for UMTS"
[3]
TR 23.887: "Study on Machine-Type Communications (MTC) and other mobile data applications communications enhancements".
[4]
R1-145026, "Cell search coverage evaluation", Ericsson.
[5]
R1-145027, "System information acquisition (BCH) coverage evaluation", Ericsson.
[6]
R1-145028, "Paging channels (PICH and PCH) coverage evaluation", Ericsson.
[7]
R1-145029, "PRACH preamble coverage evaluation", Ericsson.
[8]
R1-145030, "Acquisition Indicator Channel (AICH) coverage evaluation", Ericsson.
[9]
R1-145031, "Enhanced uplink (EUL) coverage evaluation", Ericsson.
[10]
R1-145032, "HS-SCCH and HSPDSCH coverage evaluation", Ericsson.
[11]
R1-145134, "Evaluation results on coverage enhancements", Huawei.
[12]
R1-150331, "Uplink coverage evaluation for small data applications", Ericsson.
[13]
Chairman's Notes RAN1 #78bis, Ljubljana, Slovenia, 6th - 10th Oct 2014.
[14]
R1-150333, "Analysis on repetitions and power boosting techniques for enhancing the coverage of the PCH over the S-CCPCH", Ericsson.
[15]
R1-145135, "Solutions for coverage enhancement", Huawei, HiSilicon.
[16]
Uplink Capacity Maximization based on Random Access Channel (RACH) Parameters in WCDMA, Kim Sangbum, et al, Vehicular Technology Conference, VTC 2006, IEEE 63rd, 2006.
[17]
R1-150727, TP on solutions for coverage enhancements, Huawei, Hisilicon
[18]
R1-151888, Further considerations on coverage for UMTS SDT, Huawei, Hisilicon
[19]
R1-152074, "Coverage improvements for EUL based on a time-multiplexed E-DPCCH/E-DPDCH operation", Ericsson.
[20]
TR 25.706: "Downlink enhancements for UMTS"
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3  Definitions, symbols and abbreviationsWord‑p. 7

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 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.

3.2  Symbols

For the purposes of the present document, the following symbols apply:

3.3  Abbreviations

For the purposes of the present document, the abbreviations given in TR 21.905 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.
CC
Convolutional Coding
CN
Core Network
CPICH
Common Pilot Channel
DL
Downlink
FBI
Feedback Information
ILPC
Inner Loop Power Control
IMSI
International Mobile Subscriber Identity
MCL
Maximum Coupling Loss
NDI
New Data Indicator
NBAP
Node-B Application Part
OCNS
Orthogonal Channel Noise Simulator
OLPC
Outer Loop Power Control
PA
Pedestrian A/Paging Attempt/Power Amplifier
PCH
Paging Channel
PDP
Packet Data Protocol
PI
Paging Indicator
PSM
Power Save Mode
RSCP
Received Signal Code Power
RSN
Retransmission Sequence Number
RV
Redundancy Version
SDT
Small Data Transmissions
SG
Serving Grant
SHO
Soft Handover
SI
Study Item
SIB
System Information Block
TB
Transport Block
TDM
Time Division Multiplexing
TF
Transport Format
UL
Uplink
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