1. Doc: IEEE 802.15-13-0648-00-0008 Submission November 2013 Hernandez,Li,Dotlić,Miura (NICT)Slide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Complementary frame structure for TDD mode] Date Submitted: [ November 2013] Source: [Marco Hernandez, Huan-Bang Li, Igor Dotlić, Ryu Miura ] Company: [NICT] Address: [3-4 Hikarino-oka, Yokosuka, 239-0847, Japan] Voice:[+81 46-847-5439] Fax: [+81 46-847-5431] E-Mail:[] Re: [In response to call for technical contributions to TG8] Abstract:[ ] Purpose:[Material for discussion in 802.15.8 TG] Notice:This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.

2. Doc: IEEE 802.15-13-0648-00-0008 Submission Frame structure (TDD) November 2013 Hernandez,Li,Dotlić,Miura (NICT)Slide 2 S-L 1 =synchronization for L 1 RS-L 1 =reference signals for L 1 RA=random access or channel sounding for MIMO or beamforming. L 1 =PD 1 transmits and PD 2 receives L 2 =PD 2 transmits and PD 1 receives GP=guard period

3. Doc: IEEE 802.15-13-0648-00-0008 Submission Frame structure (TDD) GP=(73+1024)T s =71.42 µsec T p =1 Km/3x10 8 m/s=3.3 µsec (worst case). Last symbol of PD 1 arrives to PD 2 after T p, the symbol is detected, PD 2 switches from Rx to Tx. Then, the first transmitted symbol of PD 2 arrives to PD 1 after T p. T p +T dec +T sw +T comp +T p =GP –T dec =time to detect the last symbol –T sw =time to switch from Rx to Tx or vice-versa –T comp =compensation time to align to GP November 2013 Hernandez,Li,Dotlić,Miura (NICT)Slide 3

4. Doc: IEEE 802.15-13-0648-00-0008 Submission TDD frame in time-frequency-power November 2013 Hernandez,Li,Dotlić,Miura (NICT)Slide 4

5. Doc: IEEE 802.15-13-0648-00-0008 Submission TDD frame configuration November 2013 Hernandez,Li,Dotlić,Miura (NICT)Slide 5 Note that when two or more PDs use a TDD configuration, a 3 rd PD joining the Group would require to adopt that TDD configuration as well. In other words, dynamic asymmetric traffic in a Group of PDs would be difficult to manage, but feasible.