scope:

This introduction is not part of IEEE Std 802.15.3e-2017, IEEE Standard for High Data Rate Wireless Multi-Media Networks-Amendment 1: High-Rate Close Proximity Point-to-Point Commcunications.

IEEE Std 802.15.3e is an amendment to IEEE Std 802.15.3-2016 that defines an alternative physical layer operating in the millimeter wave band along with the necessary MAC changes to support this PHY. Some of the key features and additions are as follows:

- Operation in the 60 GHz band

- New data rates, with the reaching 100 Gb/s

- Limiting communication range to 10 centimeter or less

- Use of a pairnet structure and Stack ACK mechanism to simplify and optimize the MAC

- Selectable PHY modes (single carrier and OOK) to achieve either high-speed operation or system simplicity.

Interest in developing a close proximity version of a 60 GHz band PHY and associated MAC changes began in 2014. Acitivity was initially conducted as part of Task Group 3d, formed in May 2014, which covered switched, point-to-point connections operating in the frequencies from 60 GHz up to the lower THz bands. The Application Requirements Document (ARD). Technical Requirements Documents (TRD). Channel models, and regulatory issues for close proximity scenarios was reviewed in July 2014. Discussions began to separate the close proximity efforts at 60 GHz from the other activities at the lower THz band in September 2014 and a decision was made in November 2014 to split the Task Group 3d into two, one optimized for ranges under 10 centimeters (3e) and another covering several meters or more (3d). The first meeting of 3e as a task group was held in March 2015 in Berlin, Germany, where the Project Authorization Request (PAR) and Criteria for Standards Development (CSD) were approved. At the May 2015 meeting, the ARD and TRD were combined as a single Technical Guidance Document (TGD) and proposals were reviewed in the July and September 2015 sessions, including the selection of two PHY modes. The group entered working group letter ballot in January 2016. After two working group recirculation ballots, sponsor ballot started in July 2016. A total of three sponsor recirculation ballots were held, leading to approval of IEEE Std 802.15.3e-2017 by the IEEE-SA Standards Board on 14 February 2017.