doc.: IEEE 802.15-<doc#> <month year> doc.: IEEE 802.15-<doc#> Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Transmission in an RSLN enabled PAN Date Submitted: 14 March, 2012 Source: Seong-Soon Joo, Jong-Arm Jun, Nae-Soo Kim, Cheol-Sig Pyo Company: ETRI Address: 161 Gajeong-dong, Yuseong-gu, Daejeon, KOREA Voice: +82-42-860-6333, FAX: +82-42-860-4197, E-Mail: ssjoo@etri.re.kr Re: Abstract: As an initial draft for the LECIM MAC, to extend the networking coverage of a star network, transmission in the Relayed Slot-Link Network (RSLN) enabeld PAN is described. Purpose: Initial draft for the LECIM MAC 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. <author>, <company>

Transmission in an RSLN enabled PAN <month year> doc.: IEEE 802.15-<doc#> Transmission in an RSLN enabled PAN Seong-Soon Joo*, Jong-Arm Jun, Nae-Soo Kim, Cheol-Sig Pyo ETRI <author>, <company>

Transmission in RSLN enabled PAN (I) Starting transmission of a frame command frame generation MLME primitives by next higher layer of originator MAC data frame generation MCPS primitive by next higher layer of originator MAC new attribute for MCPS-DATA.request TxGrade : GRADE_0, GRADE_1, GRADE_2 Usage of slot-links for trasmitting a frame command frame from the PAN coordinator : coordinator slot or bidirectional device slot from a device : bidirectional device slot data frame GRADE_0 : prioritized device slot GRADE_1 : bidirectional device slot GRADE_2 : bidirectional device slot

Transmission in RSLN enabled PAN (II) Relaying in an RSLN repeater 3rd level frame filtering satify all the requirements except matching destination address relaying a frame from a slot to a slot relaying of a frame from prioritized device slot inward only search the nearest prioritized device slot if no ACK within macAckWaitDuration, search another prioritized device slot or bidirectional device slot assigned to the device relaying of a frame from coordinator slot outward only synchronous relaying to the coordinator slot synchronize to the inner coordinator cyclic-frame beacon relaying of a frame from bidirectional device slot relaying tier of Data IE is lower than the repeater’s tier, relay outward otherwise, relay inward inward : synchronize to the outer coordinator cyclic-frame beacon outward : synchronize to the inner coordinator cyclic-frame beacon

Transmission in RSLN enabled PAN (III) outward relaying coordinator layer 1 repeater A A A layer 2 repeater a A a A a layer 3 device 1 a a inward relaying coordinator layer 1 repeater A A A layer 2 repeater a A a A a layer 3 device 1 a a

Multiple Grades of Slot Access try on the earlist prioritized device slot if no slot-link ACK within macAckWaitDuration, try on the bidirectional device slot or the next prioritized device slot which comes first if no slot-link ACK within macAckWaitDuration, repeat 2nd phase for macMaxFrameRetries times GRADE_1 waits for the primary bidirectional device slot in the cyclic-superframe, transmits the data if the device fails to transmit the data in the primary bidirectional device slot in repeater, the device will keep searching supplementary bidirectional device slots for the duration of the cyclic-superframe or will search the coming cyclic-superframe for an opportunity to transmit the data. if no ACK within slotted-su[erframe duration*macRelayingTier, repeat 2nd phase for macMaxFrameRetries times GRADE_2

Use of Acknowledgement (I) ACK in an RSLN enabled network end-to-end ACK relaying ACK in repeaters slot-link ACK repeater’s ACK Usage of ACK GRADE_0 : slot-link ACK & ACK GRADE_1 : ACK, GACK GRADE_2 : no ACK mechanism

Use of Acknowledgement (II) Enhanced ACK frame Header IE RSLN ACK slot-link ACK GACK RSLN ACK IE Octets:1 6 variable ACK control Time-stamp List of seq number of ACKed frame Bits: 0-1 2-5 6-7 ACK type Number of ACKed frame reserved ACK = 0 Slot-link ACK = 1 Group ACK = 2 ACK/Slot-link ACK = 1 GACK < 16

Use of Acknowledgement (III) Originator next higher layer Originator MAC Repeater MAC Recipient MAC Recipient next higher layer MCPS-DATA,request(gr0) Data (AR=1) Data (AR=1) slot-link ACK slot-link ACK Acknowledgment MCPS-DATA,indication Acknowledgment MCPS-DATA,confirm

Use of Acknowledgement (IV) Originator next higher layer Originator MAC Repeater MAC Recipient MAC Recipient next higher layer MCPS-DATA,request(gr1) Data (AR=1) Data (AR=1) Acknowledgment MCPS-DATA,indication Acknowledgment MCPS-DATA,confirm

Use of Acknowledgement (V) Originator next higher layer Originator MAC Repeater MAC Recipient MAC Recipient next higher layer MCPS-DATA,request(gr0) Data (AR=1) slot-link ACK Data (AR=1) Retry Transmission in alternative slots Data (AR=1) slot-link ACK MCPS-DATA,indication Acknowledgment Acknowledgment MCPS-DATA,confirm

Use of Acknowledgement (VI) Originator next higher layer Originator MAC Repeater MAC Recipient MAC Recipient next higher layer MCPS-DATA,request(gr1) Data (AR=1) Data (AR=1) Retry Transmission in alternative slots Data (AR=1) Data (AR=1) MCPS-DATA,indication Acknowledgment Acknowledgment MCPS-DATA,confirm

Pending Slot Frames (I) Pending frames the PAN coordinator or repeaters can pend outward link only only on bidirectional device slot no ACK replied from the outward bidirectional device slot keep transmitting pending frame in bidiretional device slot start to provide pending slot infor in beacon wait for macPendingWaitDuration* slotted-suerframe duration, remove pending slot infor Extracting pending data when finding a pending slot in beacon, wake up on the bidirectional device slot to receive a frame expire pending after macPendingWaitDuration * slotted-suerframe duration

Pending Slot Frames (II) Recipient next higher layer Recipient MAC Repeater MAC PAN Coordinator MAC PAN Coordinator next higher layer MCPS-DATA,request(gr1) Data (AR=1) Data (AR=1) Retry Transmission in primary bidir. slot Beacon (pending slot) Data (AR=1) Acknowledgment Acknowledgment MCPS-DATA,confirm MCPS-DATA,indication

Thanks for your Attention! ssjoo@etri.re.kr