# US 2019/0173619 A1 · Time based redundancy version determination for grant-free signaling > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173619 A1 - Document ID: US20190173619A1 - Status: Published application - Kind: A1 - Application number: 16/208,162 - Filed: 2018-12-03 - Published: 2019-06-06 - Earliest claimed: 2017-12-06 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Chong LI; Chih-Ping LI; Jing JIANG - Web page: https://patentgrep.com/patent/US20190173619A1 ## CPC - H04L 1/1819: {with retransmission of additional or different redundancy} - H03M 13/13: Linear codes - H04L 1/1887: {Scheduling and prioritising arrangements} - H04L 1/189: {Transmission or retransmission of more than one copy of a message} - H04L 27/2605: {Symbol extensions, e.g. Zero Tail, Unique Word [UW]} - H04W 72/1268: of uplink data flows - H04W 76/27: Transitions between radio resource control [RRC] states - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04W 80/02: Data link layer protocols - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes determining, based on a time of a transmission, a redundancy version (RV) of data to be transmitted in the transmission and transmitting the determined RV of the data via a wireless medium at the time. ## Claims ### Claim 1 A method for wireless communications, comprising: determining, based on a time of a transmission, a redundancy version (RV) of data to be transmitted in the transmission; and transmitting the determined RV of the data via a wireless medium at the time. ### Claim 2 (depends on 1) The method of claim 1, wherein the determination is based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the time. ### Claim 3 (depends on 1) The method of claim 1, wherein the determination is based on a mini-slot index associated with the time. ### Claim 4 (depends on 1) The method of claim 1, wherein the determination is based on a slot index associated with the time. ### Claim 5 (depends on 1) The method of claim 1, further comprising: receiving radio resource control (RRC) signaling indicating a mapping of times to RVs. ### Claim 6 (depends on 1) The method of claim 1, further comprising: receiving layer 1 (L1) signaling indicating a mapping of times to RVs. ### Claim 7 A method for wireless communications, comprising: receiving a transmission via a wireless medium; determining, based on a time of the transmission, a redundancy version (RV) of data in the transmission; and decoding the data in the transmission based on the determined RV. ### Claim 8 (depends on 7) The method of claim 7, wherein the determination is based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the time. ### Claim 9 (depends on 7) The method of claim 7, wherein the determination is based on a mini-slot index associated with the time. ### Claim 10 (depends on 7) The method of claim 7, wherein the determination is based on a slot index associated with the time. ### Claim 11 (depends on 7) The method of claim 7, further comprising: transmitting radio resource control (RRC) signaling indicating a mapping of times to RVs. ### Claim 12 (depends on 7) The method of claim 7, further comprising: transmitting layer 1 (L1) signaling indicating a mapping of times to RVs. ### Claim 13 A method for wireless communications, comprising: determining, based on a redundancy version (RV) of data to be transmitted in a group of K repeated uplink (UL) transmissions, a time to transmit the K repeated UL transmissions; and transmitting the K repeated UL transmissions based on a redundancy version pattern via a wireless medium at the determined time. ### Claim 14 (depends on 13) The method of claim 13, wherein the determination is based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the RV. ### Claim 15 (depends on 13) The method of claim 13, wherein the determination is based on a mini-slot index associated with the time. ### Claim 16 (depends on 13) The method of claim 13, wherein the determination is based on a slot index associated with the RV. ### Claim 17 (depends on 13) The method of claim 13, further comprising: receiving radio resource control (RRC) signaling indicating a mapping of RVs to times. ### Claim 18 (depends on 13) The method of claim 13, further comprising: receiving layer 1 (L1) signaling indicating a mapping of RVs to times. ### Claim 19 An apparatus for wireless communications in a network, comprising: a processor configured to: determine, based on a time of a transmission, a redundancy version (RV) of data to be transmitted in the transmission, and cause the apparatus to transmit the determined RV of the data via a wireless medium at the time; and a memory coupled with the processor. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the processor is configured to determine the RV of data to be transmitted in the transmission based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the time. ### Claim 21 (depends on 19) The apparatus of claim 19, wherein the processor is configured to determine the RV of data to be transmitted in the transmission based on a mini-slot index associated with the time. ### Claim 22 (depends on 19) The apparatus of claim 19, wherein the processor is configured to determine the RV of data to be transmitted in the transmission based on a slot index associated with the time. ### Claim 23 (depends on 19) The apparatus of claim 19, wherein the processor is configured to: cause the apparatus to receive radio resource control (RRC) signaling indicating a mapping of times to RVs. ### Claim 24 (depends on 19) The apparatus of claim 19, wherein the processor is configured to: cause the apparatus to receive layer 1 (L1) signaling indicating a mapping of times to RVs. ### Claim 25 An apparatus for wireless communications in a network, comprising: a processor configured to: cause the apparatus to receive a transmission via a wireless medium, determine, based on a time of a transmission, a redundancy version (RV) of data in the transmission, and decode the data in the transmission based on the determined RV; and a memory coupled with the processor. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the processor is configured to determine the RV of data in the transmission based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the time. ### Claim 27 (depends on 25) The apparatus of claim 25, wherein the processor is configured to determine the RV of data in the transmission based on a mini-slot index associated with the time. ### Claim 28 (depends on 25) The apparatus of claim 25, wherein the processor is configured to determine the RV of data in the transmission based on a slot index associated with the time. ### Claim 29 (depends on 25) The apparatus of claim 25, wherein the processor is configured to: cause the apparatus to transmit radio resource control (RRC) signaling indicating a mapping of times to RVs. ### Claim 30 (depends on 25) The apparatus of claim 25, wherein the processor is configured to: cause the apparatus to transmit layer 1 (L1) signaling indicating a mapping of times to RVs. ### Claim 31 An apparatus for wireless communications in a network, comprising: a processor configured to: determine, based on a redundancy version (RV) of data to be transmitted in a group of K repeated uplink (UL) transmissions, a time to transmit the K repeated uplink (UL) transmissions, and cause the apparatus to transmit the K repeated UL transmissions based on a redundancy version pattern via a wireless medium at the determined time; and a memory coupled with the processor. ### Claim 32 (depends on 31) The apparatus of claim 31, wherein the processor is configured to determine the time to transmit the K repeated UL transmissions based on an orthogonal frequency division multiplexing (OFDM) symbol index associated with the RV. ### Claim 33 (depends on 31) The apparatus of claim 31, wherein the processor is configured to determine the time to transmit the K repeated UL transmissions based on a mini-slot index associated with the time. ### Claim 34 (depends on 31) The apparatus of claim 31, wherein the processor is configured to determine the time to transmit the K repeated UL transmissions based on a slot index associated with the RV. ### Claim 35 (depends on 31) The apparatus of claim 31, wherein the processor is configured to: cause the apparatus to receive radio resource control (RRC) signaling indicating a mapping of RVs to times. ### Claim 36 (depends on 31) The apparatus of claim 31, wherein the processor is configured to: cause the apparatus to receive layer 1 (L1) signaling indicating a mapping of RVs to times.