BLE link-layer support (below HCI, port from MyNewt?) towards fully open source support of 6LoWPAN over BLE

• Related issues
  • USB BLE HCI protocol #4684
  • Tracker: Kinetis development board support #7154

LoRa & LoRaWAN driver and MAC layer integration

• Related issues - none
• Related PRs
  • cpu/cc26x0: add rudimentary interface to support radio core #5496
  • drivers: Add support for KW41Z builtin transceiver #7107
  • pkg: port nordic_softdevice_ble to gnrc_netif2 #7419

Duty Cycling Radio: finalize and merge lwMAC

• Related issues
  • 802.15.4(e) MAC-Layer Task Force #3039
• Related PRs
  • LWMAC: avoid receiving duplicate broadcast packet. #7442

Traffic adaptive MAC protocol: finalize and merge iQueue -> GoMacH?

• Related PRs
  • gnrc_gomach: a traffic adaptive MAC protocol for IEEE 802.15.4 networks (GoMacH). #5618

Retransmissions by MAC: finalize and merge netdev_retrans

• Related issues - none
• Related PRs
  • gnrc_netdev2: link-layer retransmissions outside the transceiver driver #4795

Point-to-Point Protocol (PPP): finalize and merge gnrc_ppp

• Related issues - none
• Related PRs
  • [Link layer] GNRC PPP #5470
  • [GNRC PPP] HDLC definitions #5471
  • [GNRC_PPP] CLI for SIM900 #5473

Re-integrate and clean-up 802.15.4 TSCH integration

• Related issues
  • 802.15.4(e) MAC-Layer Task Force #3039
  • Feature request: support IEEE 802.15.4 frame version 2 #4858
  • Feature request : support TSCH mode in MAC #7278