# US 10,873,488 B2 · Intra-packet rate adaptation for high capacity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,873,488 B2 - Document ID: US10873488B2 - Status: Granted - Kind: B2 - Application number: 16/254,291 - Filed: 2019-01-22 - Published: 2020-07-23 - Granted: 2020-12-22 - Earliest claimed: 2019-01-22 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Tuhin Subhra Chakraborty; Rajat Sapra; Karthik Muralidhar; Hari Krishna Boddapati; Swaroop Venkatesh; Ashutosh Deepak Gore - Web page: https://patentgrep.com/patent/US10873488B2 ## CPC - H04L 1/0005: {applied to payload information} - H04L 27/2604: {Multiresolution systems (by means of multiresolution subcarriers H04L27/183, H04L27/3488)} - H04B 7/0413: MIMO systems - H04L 1/0015: {characterised by the adaptation strategy} - H04L 1/0025: {Transmission of mode-switching indication} - H04L 1/0035: {evaluation of received explicit signalling} - H04L 1/0086: {Unequal error protection (H04L27/00 and H04L1/004 take precedence for layer 1/2 aspects, e.g. bit loading)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION ## Abstract Wireless communications systems and methods related to intra-packet rate adaptation are provided. A first wireless communication device communicates, with a second wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration. The first wireless communication device receives, from the second wireless communication device, a communication signal including a first data packet based on the intra-packet MCS switching configuration. The first data packet includes at least a first portion encoded by a first MCS and a second portion encoded by a second MCS different from the first MCS. ## Claims ### Claim 1 A method of wireless communication, comprising: communicating, by a first wireless communication device with a second wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration indicating a duration from a beginning of a first data packet to a time within the first data packet for switching from a first MCS to a second MCS, the first MCS being different from the second MCS; and receiving, by the first wireless communication device from the second wireless communication device, a communication signal including the first data packet based on the intra-packet MCS switching configuration, the first data packet including at least a first portion corresponding to the duration encoded by the first MCS and a second portion encoded by the second MCS different from the first MCS. ### Claim 2 (depends on 1) The method of claim 1, further comprising: transmitting, by the first wireless communication device to the second wireless communication device, an indication indicating that the first wireless communication device is capable of switching from the first MCS to the second MCS within the first data packet. ### Claim 3 (depends on 1) The method of claim 1, further comprising: receiving, by the first wireless communication device from the second wireless communication device, an indication indicating that the first data packet is transmitted based on a switch from the first MCS to the second MCS. ### Claim 4 (depends on 1) The method of claim 1, wherein the communicating includes: transmitting, by the first wireless communication device to the second wireless communication device, the intra-packet MCS switching configuration. ### Claim 5 (depends on 1) The method of claim 1, further comprising: determining, by the first wireless communication device, the duration for switching from the first MCS to the second MCS based on an error vector magnitude (EVM) parameter associated with the first wireless communication device. ### Claim 6 (depends on 1) The method of claim 1, wherein the receiving includes: receiving, by the first wireless communication device from the second wireless communication device, the first portion encoded by the first MCS; and receiving, by the first wireless communication device from the second wireless communication device after receiving the first portion, the second portion encoded by the second MCS including a higher MCS order than the first MCS. ### Claim 7 (depends on 6) The method of claim 6, wherein the receiving further includes: receiving, by the first wireless communication device from the second wireless communication device, a third portion of a second data packet encoded by a third MCS; and receiving, by the first wireless communication device from the second wireless communication device after receiving the third portion, a fourth portion of the second data packet encoded by a fourth MCS including a higher MCS order than the third MCS, wherein the first portion and the second portion are associated with a first multiple-input multiple-output (MIMO) stream, and wherein the third portion and the fourth portion are associated with a second MIMO stream different from the first MIMO stream. ### Claim 8 (depends on 1) The method of claim 1, wherein the receiving includes: receiving, by the first wireless communication device from the second wireless communication device, the communication signal indicating a switch from the first MCS to the second MCS within the first data packet. ### Claim 9 (depends on 1) The method of claim 1, further comprising: decoding, by the first wireless communication device, the first portion of the first data packet based on the first MCS; and decoding, by the first wireless communication device, the second portion of the first data packet based on the second MCS. ### Claim 10 A method of wireless communication, comprising: communicating, by a first wireless communication device with a second wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration indicating a duration from a beginning of a first data packet to a time within the first data packet for switching from a first MCS to a second MCS, the first MCS being different from the second MCS; and transmitting, by the first wireless communication device to the second wireless communication device, a communication signal including the first data packet based on the intra-packet MCS switching configuration, the first data packet including at least a first portion corresponding to the duration encoded by the first MCS and a second portion encoded by the second MCS different from the first MCS. ### Claim 11 (depends on 10) The method of claim 10, further comprising: receiving, by the first wireless communication device from the second wireless communication device, an indication indicating that the second wireless communication device is capable of switching from the first MCS to the second MCS within the first data packet. ### Claim 12 (depends on 10) The method of claim 10, further comprising: transmitting, by the first wireless communication device to the second wireless communication device, an indication indicating that the first data packet is transmitted based on a switch from the first MCS to the second MCS. ### Claim 13 (depends on 10) The method of claim 10, further comprising: receiving, by the first wireless communication device from the second wireless communication device, the intra-packet MCS switching configuration. ### Claim 14 (depends on 10) The method of claim 10, further comprising: encoding, by the first wireless communication device, the first portion of the first data packet using the first MCS; and switching, by the first wireless communication device, to encode the second portion of the first data packet using the second MCS based on the duration indicated by the intra-packet MCS switching configuration. ### Claim 15 (depends on 10) The method of claim 10, wherein the transmitting includes: transmitting, by the first wireless communication device to the second wireless communication device, the first portion encoded by the first MCS; and transmitting, by the first wireless communication device to the second wireless communication device after transmitting the first portion, the second portion encoded by the second MCS including a higher MCS order than the first MCS. ### Claim 16 (depends on 15) The method of claim 15, wherein the transmitting further includes: transmitting, by the first wireless communication device to the second wireless communication device, a third portion of a second data packet encoded by a third MCS; and transmitting, by the first wireless communication device to the second wireless communication device after receiving the third portion, a fourth portion of the second data packet encoded by a fourth MCS including a higher MCS order than the third MCS, wherein the first portion and the second portion are associated with a first multiple-input multiple-output (MIMO) stream, and wherein the third portion and the fourth portion are associated with a second MIMO stream different from the first MIMO stream. ### Claim 17 (depends on 10) The method of claim 10, wherein the transmitting includes: transmitting, by the first wireless communication device from the second wireless communication device, the communication signal indicating a switch from the first MCS to the second MCS within the first data packet. ### Claim 18 An apparatus comprising: a transceiver configured to: communicate, with a wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration indicating a duration from a beginning of a first data packet to a time within the first data packet for switching from a first MCS to a second MCS, the first MCS being different from the second MCS; and receive, from the wireless communication device, a communication signal including the first data packet based on the intra-packet MCS switching configuration, the first data packet including at least a first portion corresponding to the duration encoded by the first MCS and a second portion encoded by the second MCS different from the first MCS. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the transceiver is further configured to: transmit, to the wireless communication device, an indication indicating that the apparatus is capable of switching from the first MCS to the second MCS within the first data packet. ### Claim 20 (depends on 18) The apparatus of claim 18, wherein the transceiver is further configured to: receive, from the wireless communication device, an indication indicating that the first data packet is transmitted based on a switch from the first MCS to the second MCS. ### Claim 21 (depends on 18) The apparatus of claim 18, wherein the transceiver is further configured to communicate the intra-packet MCS switch configuration by: transmitting, to the wireless communication device, the intra-packet MCS switching configuration. ### Claim 22 (depends on 18) The apparatus of claim 18, further comprising: a processor configured to determine the duration for switching from the first MCS to the second MCS based on an error vector magnitude (EVM) parameter associated with the apparatus. ### Claim 23 (depends on 18) The apparatus of claim 18, wherein the transceiver is further configured to transmit the communication signal by: receiving, from the wireless communication device, the first portion encoded by the first MCS; and receiving, from the wireless communication device after receiving the first portion, the second portion encoded by the second MCS including a higher MCS order than the first MCS. ### Claim 24 (depends on 23) The apparatus of claim 23, wherein the transceiver is further configured to transmit the communication signal by: receiving, from the wireless communication device, a third portion of a second data packet encoded by a third MCS; and receiving, from the wireless communication device after receiving the third portion, a fourth portion of the second data packet encoded by a fourth MCS including a higher MCS order than the third MCS, and wherein the first portion and the second portion are associated with a first multiple-input multiple-output (MIMO) stream, and wherein the third portion and the fourth portion are associated with a second MIMO stream different from the first MIMO stream. ### Claim 25 An apparatus comprising: a transceiver configured to: communicate, with a wireless communication device, an intra-packet modulation coding scheme (MCS) switching configuration indicating a duration from a beginning of a first data packet to a time within the first data packet for switching from a first MCS to a second MCS, the first MCS being different from the second MCS; and transmit, to the wireless communication device, a communication signal including the first data packet based on the intra-packet MCS switching configuration, the first data packet including at least a first portion corresponding to the duration encoded by the first MCS and a second portion encoded by the second MCS different from the first MCS. ### Claim 26 (depends on 25) The apparatus of claim 25, wherein the transceiver is further configured to: receive, from the wireless communication device, an indication indicating that the wireless communication device is capable of switching from the first MCS to the second MCS within the first data packet. ### Claim 27 (depends on 25) The apparatus of claim 25, wherein the transceiver is further configured to: transmit, to the wireless communication device, an indication indicating that the first data packet is transmitted based on a switch from the first MCS to the second MCS. ### Claim 28 (depends on 25) The apparatus of claim 25, wherein the transceiver is further configured to communicate the intra-packet MCS switch configuration by: receiving, from the wireless communication device, the intra-packet MCS switching configuration. ### Claim 29 (depends on 25) The apparatus of claim 25, wherein the transceiver is further configured to transmit the communication signal by: transmitting, to the wireless communication device, the first portion encoded by the first MCS; and transmitting, to the wireless communication device after transmitting the first portion, the second portion encoded by the second MCS including a higher MCS order than the first MCS. ### Claim 30 (depends on 29) The apparatus of claim 29, wherein the transceiver is further configured to transmit the communication signal by: transmitting, to the wireless communication device, a third portion of a second data packet encoded by a third MCS; and transmitting, to the wireless communication device after receiving the third portion, a fourth portion of the second data packet encoded by a fourth MCS including a higher MCS order than the third MCS, wherein the first portion and the second portion are associated with a first multiple-input multiple-output (MIMO) stream, and wherein the third portion and the fourth portion are associated with a second MIMO stream different from the first MIMO stream.