New Item Proposal
[Form to be used for proposing a new item for standardization, study or consideration by TSDSI]
[Instructions for filling are given at the end of the Form]
TitleWaveform Engineering for Rel-13 and later releases of cellular IoT Systems
Study Group / SG1
Working Group
NIP Name
Supporters:
Supporting Organization / Name / Email IDCEWiT /
IITM /
Summary <Provide the Summary in the below box.>
This NIP requests the RNES WG to consider initiating a study item on new waveform engineering for Rel-13 and for next generation cellular IoT .
Description <Provide the Description in the below box.>
Background
Orthogonal Frequency Division Multiplexing (OFDM) has emerged as a dominant modulation method for wide area cellular applications. However, the next wireless standards are expected to support high data rate wide area cellular systems as well as low data rate applications involving machine-to-machine communications (M2M), machine type communications (MTC)- popularly known as Internet of Things (IoT) [1],[5]. The physical layer of IoT has diverse requirements such as support for large coverage area (i.e.,up to 30Km cell radius), high power amplifier efficiency, very high battery life, support for ultra-low latencies at physical layer level, support of massive number of low throughput devices and very low out of band emissions (OBE). Low OBE is mainly required for situations where the system uses dynamic spectrum access principles. The choice of waveform is critical to meet the aforementioned requirements.
OFDM has very high peak-to-average-power ration (PAPR), high OBE compared to single carrier systems. Filter bank multicarrier [2] and Generalized frequency division multiplexing (GFDM) [3], [4] have been proposed as an alternative to OFDM. The latter belongs to the family of DFT-precoded-OFDM modulation methods that are already employed in 4G systems. Though DFT-precoded-OFDM employing a frequency domain pulse shaping filter (FDPSF) with certain excess bandwidth (BW) was proposed for the purpose of reducing the peak to average power ratio (PAPR) during 3GPP LTE rel-8 standardization, Long-Term-Evolution (LTE) uplink employed a rectangular FDPSF for bandwidth efficiency reasons. Recently, a time domain GFDM implementation has been proposed that allows certain amount of self-interference between the users by allowing overlapping groups of subcarriers to be shared among the users. This type of non-orthogonal signal transmission allows use of FDPSFs employing certain excess BW for PAPR reduction. This technique can also be used meet the required latency.
In the proposed study item we would like to study the use of generalized GFDM/DFT-precoded-OFDM methods to develop a waveform that offers significantly lower PAPR, lower OBE, and lower latency compared to existing methods. The main aims of the study are as follows:
1. Collect requirements on the waveform design for next generation IoT
2. Conduct a study of candidate waveforms towards next generation IoT
3. Conduct a feasibility study on the performance of candidate waveforms for Rel-13 IoT design. Identify potential contributions to GERAN cIoT study item [5].
4. The time lines for the aforementioned activity will be defined during the study phase
Proposed Time Lines:
1. Collection requirements for 5G IoT waveforms (three months, 30th June 2015)
2. Evaluation of proposals (6 months) (30th Dec 2015)
3. Identify potential contributions to GERAN cIoT study by 30th June 2015
4. Evaluation of proposals to GERAN cIoT (align with GERAN timelines)
Impact <Provide the Impact of NIP in TSDSI in the below box.>
This study may lead to design of a new waveform for Rel-13 and subsequent releases of IoT systems
References <Provide the References in the below box.>
1. G.Fettweis and S. Alamouti, “5G: Personal mobile internet beyond what cellular did to telephony,” in IEEE Communications Magazine, Feb.2014.
2. B. Farhang-Boroujeny, “OFDM versus filter bank multicarrier,” in IEEE Signal Processing Magazine, May 2011.
3. G. M. Krondorf and S. Bittner, “GFDM: Generalized frequency division multiplexing,” in IEEE Vehicular Technology Conference (VTC Spring09), 2009.
4. N. Michailow, M. Matthe, I. S. Gaspar, A. Caldevilla, and L. Mendes,“Generalized frequency division multiplexing for 5th generation cellular networks,” IEEE Trans. Commun., 2014
5. 3GPP TR 45.820 V1.0.1 3rd Generation Partnership Project;Technical Specification Group GSM/EDGE Radio Access Network; Cellular System Support for Ultra Low Complexity and Low Throughput Internet of Things; (Release 13)
Urgency <Provide the urgency of the NIP. Select anyone Important/Necessary/Critical/Urgent >
Urgent
Instructions:
1. Title: The title shall be specific and indicate the item clearly
2. Study Group: Mention the Study Group that you think is relevant for the item proposed. The list of existing Study Groups is available at TSDSI website. The field can be left blank if you are unsure of the appropriate SG. The SG will be assigned by the secretariat after consulting the SG chairs.
3. Work Group: Mention the Work Group that you think is relevant for the item proposed. The list of existing Work Groups is available at TSDSI website. The field can be left blank if you are unsure of the appropriate WG. The WG will be assigned by the secretariat after consulting the SG/WG chairs.
4. The e-mail ids shall be the official email ids with organization domains or ids used while registering as a member with TSDSI.
5. Urgency shall indicate how important the topic is to be taken up on priority. The broad meanings of the urgency terms are:
Urgent: There is huge market or regulatory impact if the item is not addressed very soon
Important: There can be market impact or regulatory impact in the near future (order of one or two years) if the item the item is not addressed
Necessary: The item needs to be addressed though the immediate impact is not noticeable.
Critical: Both Important and urgent.
Urgency level can be given by the proposer. This will be reviewed by the GC/SG and the final urgency level will be allocated subsequently.
6. The Proposal shall provide the details of the topic to be addressed with emphasis on the business/market/national need for TSDSI to take it up.
7. One form shall contain only one item.
Where to send:
Please fill in all the details and mail the form to . You will get an acknowledgement along with a NIP Number allocated to the request.