Patent CA-3062381-C (CA)
Title: Communication method and communications apparatus
Inventor: ZHANG XI
IPC: H04L5/00
Filed: 2018-05-04
Granted: 2022-06-07
Abstract: This application discloses a communication method and a communications apparatus. The method includes: determining, by a first device, a phase tracking reference signal PTRS pattern, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples; and mapping, by the first device, a PTRS to one or more symbols, and sending the one or more symbols to a second device. 1,10 A 101 % < ,.._ 102 iilr FIG. 1 A first device determines a phase tracking reference signal 201 PTRS pattern based on at least one of a modulation and coding scheme and a scheduled bandwidth, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples v 202 ----The first device maps a PTRS to one or more symbols, and z sends the one or more symbols to a second device FIG. 2 Date Recue/Date Received 2020-06-09 2/10 T al OP i __________________________________________________________ a . i ! I 1 = = i . . 1 = 1 I 1 I t , t . ________________________________________________________________ _I___-2 3 4 M-2 M- VI ::..::...i.-..1111.. = ::::::: .. ....õ ......õ. .:..:.:: .. "...I.:: - - - - = :::,..::: -;::::::.-.1..1". .,.= -. .õ.õ. -..- .. =------ PTRS chunk ,...:. PTRS sample , x=.::::: ......., ,===,= ,.-.... FIG. 3 0 1 2 3 4 5 6 7 8 9 10 11 12 13 . : 4 --. : , . . , . : .=:. . : - ________________________________________________ ..... v. : . ... . . . i 7 ____________ ...e/ ../ / ............ .......... .:....:.:.:.: :.:.:.:....: ............ our ...::.::.:.:.:....:.:::. PDCCH __ D1V1RS r A PTRS FIG. 4 Date Recue/Date Received 2020-06-09 3/10 Demodulation reference signal Phase tracking (a) reference signal Physical control channel (b) (c) FIG. 5 = ____________________________________________________ DMRS #1 I. = PTRS #1 DMRS #2 4 PTRS FIG. 6 DMRS #1 4 PTRS #1 = DMRS #2 FIG. 7 Date Recue/Date Received 2020-06-09 4/10 = DMRS #1 DMRS #2 4 ________ is, ________ PTRS #1 FIG. 8 Communications apparatus 900 901 Processing unit 902 _ Transceiver unit FIG. 9 Date Recue/Date Received 2020-06-09 5/10 Communications apparatus 1000 Processor Memory 1001 1003 Transceiver 1002 FIG. 10 Communications apparatus 1100 Processor Memory 1101 1103 Transceiver 1102 FIG. 11 Date Recue/Date Received 2020-06-09 6/10 Communications apparatus 1200 1201 Processing unit 1202 Transceiver unit FIG. 12 Date Recue/Date Received 2020-06-09 7/10 First device Second device Send, to the first device, at least one of information indicating an intra-symbol PTRS chunk density, information indicating a quantity of PTRS samples, and information indicating a distribution location of a chunk within a symbol 1301: Determine a PTRS pattern based on at least one of the following types of information: an inter-symbol PTRS time domain density, the intra-symbol PTRS chunk density, the quantity of PTRS samples, and the information about the distribution location of a PTRS chunk within a symbol 1302: Map a PTRS to one or more symbols Send, to the second device, the one or more symbols to which the PTRS is mapped 1303: Receive the one or more symbols from the first device 1304: Determine the PTRS pattern based on at least one of the following types of information: the inter-symbol PTRS time domain density, the intra-symbol PTRS chunk density, the quantity of PTRS samplcs, and the information about the distribution location of a PTRS chunk within a symbol FIG. 13 Date Recue/Date Received 2020-06-09 8/10 (a) 1One DFTS-OFDM symbol .. _. ___ .. .. ( = = = = __ .... . . __ . __ . - . . (b) . . = ,===µ . ........ .. ....... (c) '..-----=.."7:.õ:: .. . . ...... .... , , , .. ... ........... __ .. ,;=.= ;-. . õ (d) !;="it:=,'= = .-= -==.= . õ.. .... . :=:,.== ==,,.,, - ..*:,','::== =:1: -: -- -: :-. . . : ::: .. ... . = .. :..,. -...,.,: _ .. (e) :::=:-=,."::::".=::, ...,:=iiii :',.,-.=::=:::: ...,;;.:.:....',....:=!..:E ..= ... ;1;:=:0;:=:=::::',,,i,:: -=---:-.-:-=-=,=,.....=.=.Pg....Hi.... .. =....:.=...:.. .. :...õ .. ,..:.:.:: .. ..:.:. i:i Data Ei PTRS sample FIG. 14 .6,:n..y..I=:..=:.:.i:.,:=):.:.:::.i::.:.i::.::..:::.:.=..ii.=.:::.=:=..:.=.i]: mm:.=:]:::.:.=.:]:.=-=.:.=:,..:.=..:.=.:.=.*:.::.=::::.=:.=.*-=.::.=.:::::::::::::::::::::::: (a) ........:=:..... ::::,::::::::::::::::::::,::::::,::::::::,:::::::::,::::::,::::::,:::::::,::::: ::::::::::::,,::::::::::::::::::::,:,,,..,:::::::::::::::::,::::::,:::,:::::::: ::::::::::::,,:::,,, (:)1 +.01 ...--.f...,:-....-iim--.:-:.:....:-.:.:.:i.:....:.:-:m.-:.:-.:.:....--v.:....:-.:....--a..:....:-.:...m..:.:.:.:....--v.:...:::.:? (b) r 4. .... .... , ... . ... : . . .....,.. . : ... . . -: - .... : ... : : .: : ,.- .-.....,. .?.,..?..i I ..;......: 01 + 10 z....,-,..õ ______________ ....::::..-4 wi,,,,,, ....ii...i,,,.. ... . . .. . .. . . ..õ.. .. , .. (c) l'.. 'fi: El: .;....:-...! ...':...:::i,...: pi.,..:: . E ..... ..i-.4 ..z...:1,.,,, 01 + 11 0 Data Iftl PTRS sample ..i.,..,\I FIG. 15 Date Recue/Date Received 2020-06-09 9/10 (ax :ii,....:::, ::::,:::::::.i::::.i::.!:::!!!::::::::::..!:::!:::!!::::...,::::...,.::::...,:f :.....:.:...,!:::_!::::...,:::!:.:.!:.!:...,!:...,.!.:::.:.:.:.!pw::::):.::.::j :::!::: 01 + 00 ) i., :.:.:.:,.......:.:.:.:.:.:.:.:.:.:.:.:::.::::::::::::::::::::::::::: (b) F;=:.:'.Z::;:i 01 + 01 (c) : . : 10 + 00 [ -;:*M. ::: _____________________ : (d) . YMU] 10 + 01 4*. (e) 111 ___________________________________________________ I.. . EV, :::::: 10 + 10 El Data 1, PTRS sample FIG. 16 00000110 Filitati.til . 0001 iA : : I 0111 - __ mtril . . :::::::: i::::?... .....:z.== ...:3::: . . . 00 l 0 VIA : : I 1000 kip hil, =..,.. :::, :::: . . . ,..!,:r1 . . _______ . . . . Eti 0011 -:%.... I 1001 . . ...''''..-= = = = = . . ::.J:,:::: -.,:===,-:: : : . . . 0100 [I 11 1010 ig ..:i : : I M Li:kt:i VZ, ...... .., . . . E ...1 0101 Eg ril :1 1011 0 Data R. PTRS sample FIG. 17 Date Recue/Date Received 2020-06-09 10/10 Communications apparatus 1800 Processing unit Transceiver unit 1801 1802 FIG. 18 Date Recue/Date Received 2020-06-09