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Feature #1780

closed

Investigate requirements for EC-GSM-IoT support

Added by laforge over 7 years ago. Updated about 2 years ago.

Status:
Rejected
Priority:
Low
Assignee:
Target version:
-
Start date:
07/23/2016
Due date:
% Done:

0%

Spec Reference:

Description

EC-GSM-IoT is a GERAN extension introduced in 3GPP Release 13, aimed at enabling long-range, low-power IoT devices on top of GSM/GPRS/EDGE.

The feature was originally called EC-EGPRS (extended coverage Enhanced GPRS), and only later renamed for marketing reasons.

At the very least, it consists of very significant extensions to the RLC/MAC layer by introducing EC-BCCH, EC-PCH, EC-RACH, EC-AGCH, EC-PACCH, EC-GPRS-TBF

Further Reading: After a very brief review, it seems that at the very least
  • new convolutional coding schemes are introduced for messages in a single burst (rather than the usual 4)
  • 'blind retransmissions' are introduced to re-transmit messages up to 28 times
  • new logical channels are introduced

i.e. changes to physical layer and RLC/MAC are required.

Actions #1

Updated by laforge over 7 years ago

  • Description updated (diff)
Actions #2

Updated by laforge about 2 years ago

  • Subject changed from Investigate requirements for EC-GS-IoT support to Investigate requirements for EC-GSM-IoT support
  • Status changed from New to Rejected

EC-GSM-IoT sounded very promising 5 years ago but has never been deployed, AFAICT.

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