(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`19) World Intellectual Propert
`=
`
`ower Organization “pens
`
`=
`International Bureau
`——
`(43) International Publication Date —
`04 June 2020 (04.06.2020) WIPO! PCT
`
`UOUODOAIN MUAMANE
`(10) International Publication Number
`WO 2020/112021 Al
`
`(51) International Patent Classification:
`HOAW 72/04 (2009.01)
`HOAL 5/00 (2006.01)
`A04W 74/08 (2009.01)
`
`(74) Agent: SPRUSON & FERGUSON (ASIA) PTE LTD;
`P.O. Box 1531, Robinson Road Post Office, Singapore
`903031 (SG).
`
`(21) International Application Number:
`PCT/SG2019/050530
`
`(22) InternationalFiling Date:
`
`30 October 2019 (30.10.2019)
`English
`English
`
`28 November 2018 (28.11.2018) SG
`
`(25) Filing Language:
`(26) Publication Language:
`(30) Priority Data:
`10201810672R
`.
`(71) Applicant: PANASONIC INTELLECTUAL PROPER-
`TY CORPORATION OF AMERICA[US/US]; 20000
`Mariner Avenue, Suite 200, Torrance, California 90503
`(US).
`
`.
`.
`:
`(72) Inventors: HUANG,Lei; c/o Panasonic R&D Center Sin-
`gapore, 202 Bedok South Avenue 1, #02-1 1, Singapore
`469332 (SG). URABE, Yoshio; c/o Panasonic Corpora-
`tion, 1006, Oaza Kadoma, Kadoma-shi, Osaka 571-8501
`GP). CHITRAKAR,Rojan; c/o Panasonic R&D Center
`Singaporc, 202 Bedok South Avcnuc 1, 402-11, Singapore
`469332 (SG).
`
`(81) Designated States (unless otherwise indicated, for every
`kind of national protection available): AE, AG, AL, AM,
`AO,AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW,BY. BZ.
`CA. CH, CL. CN. CO, CR. CU, CZ. DE, DJ, DK, DM, DO.
`DZ. EC. EE, EG, ES, FI, GB, GD, GE, GH. GM,GT. HN.
`HR, HU,ID, IL, IN,IR,IS, JO, JP, KE, KG, KH, KN, KP.
`KR. KW.KZ, LA, LC, LK, LR, LS, LU. LY, MA, MD, ME.
`MG, MK, MN, MW. MX, MY. MZ, NA, NG, NI, NO, NZ.
`OM,PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA,
`SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN,
`TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
`
`(84) Designated States (unless otherwise indicated, for every
`kind of regional protection available); ARIPO (BW, GH,
`GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, 5Z, TZ,
`UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ,
`TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK,
`EE,ES,FI. FR, GB, GR. HR, HU,IE,IS, IT, LT, LU, LV,
`MC, MK, MT. NL. NO,PL, PT. RO. RS.SE. SI. SK. SM,
`TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GO, GW,
`KM,ML, MR, NE,SN, TD, TG).
`
`G4) Title: COMMUNICATION APPARATUS AND COMMUNICATION METHOD FOR MULTI-BAND RANDOM ACCESS
`
`‘AID 6,
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`
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`SB operating STA 3. op senateg TAL RUS.
`
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`
`
`from STAq (BU &)
`
`
`
`rom STA4 (RUA
`
`FIGURE 5
`
`(57) Abstract: According to aspects of the present disclosure, communication apparatus and methods are provided. According to one
`aspect, a communication apparatus operating in at least a first band and a second. band, the communication appatatus may comprise a
`receiver which, in operation, receives a signal including a Trigger frameallocating at least one Random Access Resource Unit (RA-RU)
`and a controller. In operation the controller may set a first Orthogonal Frequency Division Multiple Access (OFDMA) random access
`backoff (OBO) counter according to a number of RA-RUsdetermined to be eligible in at least one of the first and second bandsin the
`received Trigger frame; and randomly select an eligible RA-RU in eachofthe at least one of the first and second bands corresponding
`to the first OBO counter for Trigger Based ¢TB) Physical layer Protocol Data Unit (PPDU)transmission when the first OBO counter
`is set to 0. The first OBO counter may be initialized according to a first OFDMA Contention Window (OCW).
`
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`wo2020/112021AdTITNIMITUIIIIICATTIMAMAAA
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`WO 2020/112021 AT TMRTIITTNIETATNNON COTAAAMTAC ANA
`
`Declarations under Rule 4.17:
`
`— ofinventorship (Rule 4.17(iv))
`Published:
`
`— with international search report (Art. 21(3))
`— in black and white; the international application as filed
`contained color or greyscale and is available for download
`from PATENTSCOPE
`
`