# US 11,310,723 B2 · Bandwidth part and uplink carrier switching > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,310,723 B2 - Document ID: US11310723B2 - Status: Granted - Kind: B2 - Application number: 16/584,034 - Filed: 2019-09-26 - Published: 2020-03-26 - Granted: 2022-04-19 - Earliest claimed: 2018-09-26 - Assignees: Ofinno, LLC - Applicants: Ofinno, LLC - Inventors: Alireza Babaei; Esmael Dinan; Hua Zhou; Hyoungsuk Jeon; Ali Cagatay Cirik; Kyungmin Park - Web page: https://patentgrep.com/patent/US11310723B2 ## CPC - H04W 48/12: using downlink control channel - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 48/16: Discovering, processing access restriction or access information - 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 74/006: {in the downlink, i.e. towards the terminal} - H04L 5/0023: {Time-frequency-space} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 74/0838: using contention-free random access [CFRA] - 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 A wireless device receives first configuration parameters of a first bandwidth part and a second bandwidth part of a licensed cell; and second configuration parameters of a third bandwidth part and a fourth bandwidth part of an unlicensed cell. A first downlink control information indicating switching from the first bandwidth part to the second bandwidth part as an active bandwidth part is received. A second downlink control information indicating switching from the third bandwidth part to the fourth bandwidth part as an active bandwidth part is received. Based on the receiving the first downlink control information: the wireless device switches from the first bandwidth part to the second bandwidth part; and does not transmit a confirmation. Based on the receiving the second downlink control information, the wireless device switches from the third bandwidth part to the fourth bandwidth part; and transmits a confirmation. ## Claims ### Claim 1 A method comprising: receiving, by a wireless device: first configuration parameters of a first bandwidth part and a second bandwidth part of a licensed cell; and second configuration parameters of a third bandwidth part and a fourth bandwidth part of an unlicensed cell; receiving a first downlink control information indicating switching from the first bandwidth part to the second bandwidth part as an active bandwidth part; receiving a second downlink control information indicating switching from the third bandwidth part to the fourth bandwidth part as an active bandwidth part; determining whether to transmit a confirmation for bandwidth part switching based on the bandwidth part switching being for the licensed cell or the unlicensed cell; based on determining that the first downlink control information is for the licensed cell: switching from the first bandwidth part to the second bandwidth part; and not transmitting a confirmation; and based on determining that the second downlink control information is for the unlicensed cell: switching from the third bandwidth part to the fourth bandwidth part; and transmitting a confirmation. ### Claim 2 (depends on 1) The method of claim 1, wherein the confirmation is a medium access control (MAC) control element. ### Claim 3 (depends on 2) The method of claim 2, wherein the transmitting the confirmation is via an uplink data channel. ### Claim 4 (depends on 2) The method of claim 2, wherein the confirmation comprises a first identifier of the third bandwidth part and a second identifier of the fourth bandwidth part. ### Claim 5 (depends on 2) The method of claim 2, wherein the first downlink control information indicates an uplink grant for transmission of one or more transport blocks via the second bandwidth part. ### Claim 6 (depends on 2) The method of claim 2, wherein the first downlink control information indicates an order for a random access procedure. ### Claim 7 (depends on 1) The method of claim 1, wherein the confirmation is an acknowledgement. ### Claim 8 (depends on 7) The method of claim 7, wherein the transmitting the confirmation is via an uplink control channel. ### Claim 9 (depends on 7) The method of claim 7, wherein the transmitting the confirmation is via an uplink data channel. ### Claim 10 (depends on 1) The method of claim 1, wherein the transmitting the confirmation is via an uplink control channel. ### Claim 11 (depends on 1) The method of claim 1, wherein the transmitting the confirmation is via an uplink data channel. ### Claim 12 (depends on 1) The method of claim 1, wherein the confirmation comprises a first identifier of the third bandwidth part and a second identifier of the fourth bandwidth part. ### Claim 13 (depends on 1) The method of claim 1, wherein the first downlink control information indicates an uplink grant for transmission of one or more transport blocks via the second bandwidth part. ### Claim 14 (depends on 1) The method of claim 1, wherein the first downlink control information indicates an order for a random access procedure. ### Claim 15 (depends on 1) The method of claim 1, wherein the second downlink control information indicates an uplink grant for transmission of one or more transport blocks via the fourth bandwidth part. ### Claim 16 (depends on 15) The method of claim 15, wherein the confirmation is a medium access control (MAC) control element. ### Claim 17 (depends on 15) The method of claim 15, wherein the confirmation is an acknowledgement. ### Claim 18 (depends on 1) The method of claim 1, wherein the second downlink control information indicates an order for a random access procedure. ### Claim 19 (depends on 18) The method of claim 18, wherein the confirmation is a medium access control (MAC) control element. ### Claim 20 (depends on 19) The method of claim 19, wherein the confirmation is an acknowledgement.