Femto BS coexistence with Wi FiAP IEEE 802

Femto BS coexistence with Wi. Fi-AP IEEE 802. 16 Presentation Submission Template (Rev. 9) Document Number: [IEEE S 802. 16 m-08/1309] Date Submitted: [2008 -10 -31] Source: Masato Okuda, Yanling Lu, Wei-Peng Chen Fujitsu Voice: E-mail: +81 -44 -754 -2811 okuda@jp. fujitsu. com *<http: //standards. ieee. org/faqs/affiliation. FAQ. html> Venue: IEEE 802. 16 m-08/040“Call for Contributions on Project 802. 16 m System Description Document (SDD)”, in response to the following topics: “TGm SDD: Femtocells”, MAC related] Base Contribution: N/A Purpose: to be discussed and adopted by TGm for the 802. 16 m SDD Notice: This document does not represent the agreed views of the IEEE 802. 16 Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802. 16. Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: <http: //standards. ieee. org/guides/bylaws/sect 6 -7. html#6> and <http: //standards. ieee. org/guides/opman/sect 6. html#6. 3>. Further information is located at <http: //standards. ieee. org/board/pat-material. html> and <http: //standards. ieee. org/board/pat >.

Femto BS Coexistence with Wi. Fi • SRD specifies requirement for a femtocell BS (f. BS) coexistence with Wi. Fi or Bluetooth. – In 9. 5, “The air interface shall support seamless coexistence of Femtocell BS’s with Wi. Fi or Bluetooth systems. ” • Rev. 2 solves co-location of 802. 16 and Wi. Fi/BT in a MS. However, a f. BS may be co-located with Wi. Fi-AP. Wi. MAX MS Wi. MAX Operator Network Internet Wi. Fi terminal Femto BS & Wi. Fi AP DSL modem

Coexistence in MS and f. BS • 802. 16/Wi-Fi Coexistence in MS – Rev. 2: MS can perform Wi. Fi/BT communication during sleep window, while BS is always in operation mode to communicate with other MSs. BS 802. 16 frame MS 802. 16 frame Wi. Fi/Bluetooth 802. 16 frame Sleep Window 802. 16 frame Wi. Fi/Bluetooth Sleep Window • 802. 16/Wi-Fi Coexistence in f. BS – Our Proposal: During the MS sleep window, f. BS performs Wi. Fi communication and neither f. BS nor MS shall not send any 802. 16 radio signal to prevent interference. BS 802. 16 frame Wi. Fi MS 802. 16 frame Sleep Window – The same concept can be applied to idle mode operation.

f. BS supporting Closed User Group • When a f. BS is configured for supporting only Closed User Group, the f. BS does not need to send any radio signal, while all member MSs of the CUG are away from the f. BS. As a result of stopping radiation of 16 m signal, Wi. Fi-AP can make full use of time duration. – Location of MSs are managed by ASN-GW or other network entity.

Proposed Text [Insert the following new subclause to the section 17 (Support for Femtocell)] 17. X Coexistence with other RATs When a femtocell BS is co-located with other RATs, it shall provide silent duration of 802. 16 air interface which can be used by the other RATs. During the silent duration, the femtocell BS and its subordinate MS shall not send any radio signal. 17. X. 1 Sleep mode for co-located Femtocell BS When all MSs under a co-located Femtocell BS are in sleep, the co-located Femtocell BS and all the MSs attached shall not send any radio signal during sleep window. 17. X. 2 Idle mode for co-located Femtocell BS When all MS under a co-located Femtocell BS are in idle mode, the co-located Femtocell BS and all the MSs attached shall not send any radio signal during paging unavailable interval. 17. X. 3 CUG MS absence in vicinity of co-located Femtocell BS While all MSs of a closed user group served by Femtocell BS are not in vicinity of the colocated femtocell, the co-located Femtocell BS shall not send any radio signal.