# US 11,310,814 B2 · Wireless communication method, network device, and terminal device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,814 B2 - Document ID: US11310814B2 - Status: Granted - Kind: B2 - Application number: 16/812,134 - Filed: 2020-03-06 - Published: 2020-07-02 - Granted: 2022-04-19 - Earliest claimed: 2017-09-08 - Assignees: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Applicants: Guangdong Oppo Mobile Telecommunications Corp., Ltd. - Inventors: Wenhong Chen; Zhi Zhang - Web page: https://patentgrep.com/patent/US11310814B2 ## CPC - H04W 48/12: using downlink control channel - H04W 72/1268: of uplink data flows - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 25/0226: {sounding signals per se} - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 80/08: Upper layer protocols {(network arrangements or communication protocols for networked applications H04L67/00)} - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Embodiments of this application provide a wireless communication method and a device, to improve communication performance in terms of frequency band deployment, use, and processing. The method includes: determining, by a network device, a first uplink carrier, where the first uplink carrier is one of a plurality of uplink carriers that can be used for a terminal device; and sending, by the network device, first information to the terminal device, where the first information indicates that the terminal device uses or can use the first uplink carrier to perform uplink transmission or processes the first uplink carrier. ## Claims ### Claim 1 A wireless communication method performed at a network device having one or more processors and memory storing a plurality of programs to be executed by the one or more processors, the method comprising: determining, by the network device, a first uplink carrier, wherein the first uplink carrier is one of a plurality of uplink carriers that can be used for a terminal device; and sending, by the network device, first information to the terminal device, wherein the first information indicates that the terminal device uses or can use the first uplink carrier to perform uplink transmission or processes the first uplink carrier, wherein the first information is carried in downlink control information (DCI), and wherein the method further comprises: sending, by the network device, second information to the terminal device, wherein the second information is used to activate or configure the first uplink carrier for the terminal device; determining, by the network device, a second uplink carrier in the plurality of uplink carriers that can be used for the terminal device; and sending, by the network device, third information to the terminal device, wherein the third information indicates that the terminal device uses the second uplink carrier to perform uplink transmission, wherein the first information and the third information are sent respectively in different scheduling processes of performing scheduling for the terminal device after the first uplink carrier is activated or configured by the second information. ### Claim 2 (depends on 1) The method according to claim 1, wherein the uplink transmission is PUCCH transmission or PUSCH transmission. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first information is carried in information related to a sounding reference signal (SRS); and the first information indicates that the terminal device uses the first uplink carrier to transmit the SRS. ### Claim 4 (depends on 3) The method according to claim 3, wherein the first information is carried in SRS configuration information for semi-statically configuring the SRS; or the first information is carried in a trigger message for dynamically triggering the SRS. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first information is carried in power adjustment information used for the terminal device or is carried in transmission of power adjustment information, and the first information is used to indicate power adjustment for the first uplink carrier. ### Claim 6 (depends on 1) The method according to claim 1, wherein the plurality of uplink carriers that can be used for the terminal device respectively belong to a plurality of different frequency bands. ### Claim 7 (depends on 6) The method according to claim 6, wherein a frequency band to which the first uplink carrier belongs is lower than frequency bands to which other uplink carriers belong. ### Claim 8 A wireless communication method performed at a terminal device having one or more processors and memory storing a plurality of programs to be executed by the one or more processors, the method comprising: receiving, by the terminal device, first information sent by a network device, wherein the first information indicates that the terminal device uses or can use a first uplink carrier to perform uplink transmission or processes a first uplink carrier, and the first uplink carrier is one of a plurality of uplink carriers that can be used for the terminal device; and based on the first information, using or selecting to use the first uplink carrier to perform uplink transmission or processing the first uplink carrier, wherein the first information is carried in downlink control information (DCI), and wherein the method further comprises: sending, by the network device, second information to the terminal device, wherein the second information is used to activate or configure the first uplink carrier for the terminal device; receiving, by the terminal device, third information sent by the network device, wherein the third information indicates that the terminal device uses a second uplink carrier to perform uplink transmission, and the second uplink carrier is a link carrier other than the first uplink carrier of the plurality of uplink carriers; and using, by the network device based on the third information, the second uplink carrier to perform uplink transmission, wherein the first information and the third information are transmitted respectively in different scheduling processes of performing scheduling for the terminal device after the first uplink carrier is activated or configured by the second information. ### Claim 9 (depends on 8) The method according to claim 8, wherein the first information indicates that the terminal device uses the first uplink carrier to perform uplink transmission; and the method further comprises: receiving, by the terminal device, second information sent by the network device, wherein the second information is used to activate or configure the first uplink carrier for the terminal device; and activating or configuring, by the terminal device, the first uplink carrier. ### Claim 10 (depends on 9) The method according to claim 9, wherein the uplink transmission is PUCCH transmission or PUSCH transmission. ### Claim 11 (depends on 8) The method according to claim 8, wherein the first information is carried in information related to a sounding reference signal (SRS); and the first information indicates that the terminal device uses the first uplink carrier to transmit the SRS. ### Claim 12 (depends on 11) The method according to claim 11, wherein the first information is carried in SRS configuration information for semi-statically configuring the SRS; or the first information is carried in a trigger message for dynamically triggering the SRS. ### Claim 13 (depends on 8) The method according to claim 8, wherein the plurality of uplink carriers that can be used for the terminal device respectively belong to a plurality of different frequency bands. ### Claim 14 (depends on 13) The method according to claim 13, wherein a frequency band to which the first uplink carrier belongs is lower than frequency bands to which other uplink carriers belong. ### Claim 15 (depends on 8) The method according to claim 8, wherein the first information is carried in power adjustment information used for the terminal device or is carried in transmission of power adjustment information, and the first information is used to indicate power adjustment for the first uplink carrier. ### Claim 16 A network device, comprising a processor, memory, and a transceiver, wherein the processor, the memory, and the transceiver communicate with each other through internal connection channels to enable the network device to: determine a first uplink carrier, wherein the first uplink carrier is one of a plurality of uplink carriers that can be used for a terminal device; and send first information to the terminal device, wherein the first information indicates that the terminal device uses or can use the first uplink carrier to perform uplink transmission or processes the first uplink carrier, wherein the first information is carried in downlink control information (DCI), and wherein the method further comprises: sending, by the network device, second information to the terminal device, wherein the second information is used to activate or configure the first uplink carrier for the terminal device; determining, by the network device, a second uplink carrier in the plurality of uplink carriers that can be used for the terminal device; and sending, by the network device, third information to the terminal device, wherein the third information indicates that the terminal device uses the second uplink carrier to perform uplink transmission, wherein the first information and the third information are sent respectively in different scheduling processes of performing scheduling for the terminal device after the first uplink carrier is activated or configured by the second information. ### Claim 17 (depends on 16) The network device according to claim 16, wherein the first information indicates that the terminal device uses the first uplink carrier to perform uplink transmission; and the network device is further enabled to: send second information to the terminal device, wherein the second information is used to activate or configure the first uplink carrier for the terminal device. ### Claim 18 (depends on 17) The network device according to claim 17, wherein the uplink transmission is PUCCH transmission or PUSCH transmission. ### Claim 19 (depends on 16) The network device according to claim 16, wherein the first information is carried in information about a sounding reference signal SRS; and the first information indicates that the terminal device uses the first uplink carrier to transmit the SRS. ### Claim 20 (depends on 19) The network device according to claim 19, wherein the first information is carried in SRS configuration information for semi-statically configuring the SRS; or the first information is carried in a trigger message for dynamically triggering the SRS. ### Claim 21 (depends on 16) The network device according to claim 16, wherein the first information is carried in power adjustment information used for the terminal device or is carried in transmission of power adjustment information, and the first information is used to indicate power adjustment for the first uplink carrier. ### Claim 22 (depends on 16) The network device according to claim 16, wherein the plurality of uplink carriers that can be used for the terminal device respectively belong to a plurality of different frequency bands. ### Claim 23 (depends on 22) The network device according to claim 22, wherein a frequency band to which the first uplink carrier belongs is lower than frequency bands to which other uplink carriers belong. ### Claim 24 A terminal device, comprising a processor, a memory, and a transceiver, wherein the processor, the memory, and the transceiver communicate with each other through internal connection channels to enable the terminal device to: receive first information sent by a network device, wherein the first information indicates that the terminal device uses or can use a first uplink carrier to perform uplink transmission or processes a first uplink carrier, and the first uplink carrier is one of a plurality of uplink carriers that can be used for the terminal device; and based on the first information, use or select to use the first uplink carrier to perform uplink transmission or process the first uplink carrier, wherein the first information is carried in downlink control information (DCI), and wherein the terminal device is further enabled to: receive second information sent by the network device and activate or configure the first uplink carrier using the second information; receive third information sent by the network device, wherein the third information indicates that the terminal device uses a second uplink carrier to perform uplink transmission, and the second uplink carrier is a link carrier other than the first uplink carrier of the plurality of uplink carriers; and use, based on the third information, the second uplink carrier to perform uplink transmission, wherein the first information and the third information are transmitted respectively in different scheduling processes of performing scheduling for the terminal device after the first uplink carrier is activated or configured by the second information. ### Claim 25 (depends on 24) The terminal device according to claim 24, wherein the uplink transmission is PUCCH transmission or PUSCH transmission. ### Claim 26 (depends on 24) The terminal device according to claim 24, wherein the first information is carried in information related to a sounding reference signal (SRS); and the first information indicates that the terminal device uses the first uplink carrier to transmit the SRS. ### Claim 27 (depends on 26) The terminal device according to claim 26, wherein the first information is carried in SRS configuration information for semi-statically configuring the SRS; or the first information is carried in a trigger message for dynamically triggering the SRS. ### Claim 28 (depends on 24) The terminal device according to claim 24, wherein the plurality of uplink carriers that can be used for the terminal device respectively belong to a plurality of different frequency bands. ### Claim 29 (depends on 28) The terminal device according to claim 28, wherein a frequency band to which the first uplink carrier belongs is lower than frequency bands to which other uplink carriers belong. ### Claim 30 (depends on 24) The terminal device according to claim 24, wherein the first information is carried in power adjustment information used for the terminal device or is carried in transmission of power adjustment information, and the first information is used to indicate power adjustment for the first uplink carrier.