# US 12,764,618 B2 · Configuring a wireless device configured with multi-radio access technology dual connectivity > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,618 B2 - Document ID: US12764618B2 - Status: Granted - Kind: B2 - Application number: 18/019,509 - Filed: 2021-07-09 - Published: 2023-09-14 - Granted: 2026-10-13 - Earliest claimed: 2020-08-06 - Assignees: Telefonaktiebolaget LM Ericsson (publ) - Applicants: Telefonaktiebolaget LM Ericsson (publ) - Inventors: Icaro Leonardo Da Silva; Stefan Wager - Web page: https://patentgrep.com/patent/US12764618B2 ## CPC - H04W 36/00698: {using different RATs} - H04W 36/0072: {of resource information of target access point} - H04W 52/0216: {using a pre-established activity schedule, e.g. traffic indication frame} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods and apparatus are disclosed, including in an example a method performed by a wireless device configured with Multi-Radio Access Technology Dual Connectivity (MR-DC). The method comprises receiving, from a first network node, at least one message in a reconfiguration procedure for a first cell group. The at least one message indicates a mode of operation of the wireless device for a second cell group by the wireless device. ## Claims ### Claim 1 A method performed by a wireless device configured with Multi-Radio Access Technology Dual Connectivity (MR-DC), the method comprising: receiving, from a first network node, at least one message in a reconfiguration procedure for a first cell group, wherein the at least one message indicates a power saving mode of operation to be applied by the wireless device for a second cell group, wherein the power saving mode comprises a suspended mode or dormant mode or deactivated mode or inactivated mode of operation, wherein the reconfiguration procedure for the first cell group is a mobility procedure for the wireless device, said mobility procedure comprising one or more of: a change of a special cell for the first cell group, a change of at least one other cell for the first cell group, a handover, and a reconfiguration with sync of the first cell group; and operating the second cell group according to the power saving mode of operation indicated in the at least one message. ### Claim 2 (depends on 1) The method of claim 1, wherein the power saving mode of operation to be applied by the wireless device for the second cell group comprises a mode of operation of the wireless device for a special cell of the second cell group and/or one or more other cells of the second cell group. ### Claim 3 (depends on 1) The method of claim 1, wherein operating the second cell group according to the power saving mode of operation comprises at least one of: operating a special cell of the second cell group in the dormant mode; operating the special cell of the second cell group in the suspended mode; operating the special cell of the second cell group in the deactivated mode; operating the special cell of the second cell group in the inactivated mode; operating the special cell of the second cell group in a dormant bandwidth part (BWP); stopping monitoring a Physical Downlink Control Channel (PDCCH) of the special cell and/or at least one other cell of the second cell group; suspending transmission for data radio bearers (DRBs) associated with the second cell group; suspending transmission for DRBs associated with a special cell of the second cell group; suspending transmission for DRBs terminated at a node associated with the second cell group or a special cell and/or at least one other cell of the second cell group; suspending DRBs associated with the second cell group; operating the special cell of the second cell group according to discontinuous reception (DRX); and monitoring a PDCCH on the second cell group only during configured on-durations of a DRX cycle for the second cell group and/or at least one cell of the second cell group. ### Claim 4 (depends on 1) The method of claim 1, further comprising storing a configuration associated with the second cell group, and resuming, activating or reactivating the second cell group based on the stored configuration of the second cell group. ### Claim 5 (depends on 4) The method of claim 4, wherein resuming, activating or reactivating the second cell group based on the stored configuration of the second cell group comprises at least one of: operating a special cell of the second cell group in a normal or active mode; operating the special cell of the second cell group in a non-dormant bandwidth part (BWP); starting monitoring a PDCCH of the special cell and/or at least one other cell of the second cell group; resuming transmission for data radio bearers (DRBs) associated with the second cell group; resuming transmission for DRBs associated with a special cell of the second cell group; resuming transmission for DRBs terminated at a node associated with the second cell group or a special cell and/or at least one other cell of the second cell group; resuming DRBs associated with the second cell group; and exiting discontinuous reception (DRX) of the special cell of the second cell group. ### Claim 6 (depends on 1) The method of any claim 1, wherein the at least one message includes an indication of a reconfiguration procedure for the second cell group. ### Claim 7 (depends on 6) The method of claim 6, wherein the reconfiguration procedure for the second cell group comprises a change of a special cell for the second cell group, a change of at least one other cell for the second cell group, a handover, a reconfiguration with sync of the second cell group, and/or a mobility procedure for the wireless device. ### Claim 8 (depends on 1) The method of claim 1, further comprising performing the reconfiguration procedure for the first cell group. ### Claim 9 (depends on 1) The method of claim 1, wherein the at least one message comprises at least one Radio Resource Control (RRC) message and/or at least one RRC reconfiguration message. ### Claim 10 (depends on 1) The method of claim 1, wherein: the first cell group comprises a master cell group (MCG) and the second cell group comprises a secondary cell group (SCG); or the second cell group comprises a master cell group (MCG) and the first cell group comprises a secondary cell group (SCG). ### Claim 11 (depends on 1) The method of claim 1, wherein the wireless device comprises a User Equipment (UE), and/or the first network node comprises a base station, base station-control unit (CU), base station-distributed unit (DU), eNB, eNB-CU, eNB-DU, gNB, gNB-CU or gNB-DU. ### Claim 12 A method performed by a first network node for configuring a wireless device configured with Multi-Radio Access Technology Dual Connectivity (MR-DC), the method comprising: sending, to the wireless device, at least one message in a reconfiguration procedure for a first cell group associated with the wireless device, wherein the reconfiguration procedure for the first cell group is a mobility procedure for the wireless device, said mobility procedure comprising one or more of: a change of a special cell for the first cell group, a change of at least one other cell for the first cell group, a handover, and a reconfiguration with sync of the first cell group; wherein the at least one message indicates a power saving mode of operation of the wireless device for a second cell group, wherein the power saving mode comprises a suspended mode or dormant mode or deactivated mode or inactivated mode of operation. ### Claim 13 (depends on 12) The method of claim 12, wherein the power saving mode of operation to be applied by the wireless device for the second cell group comprises a mode of operation of the wireless device for a special cell of the second cell group and/or one or more other cells of the second cell group. ### Claim 14 (depends on 12) The method of claim 12, further comprising sending at least one further message to the wireless device to cause the wireless device to resume, activate or reactivate the second cell group based on a stored configuration of the second cell group at the wireless device. ### Claim 15 (depends on 12) The method of claim 12, further comprising stopping transmitting a PDCCH to the wireless device on a special cell associated with the second cell group and/or at least one other cell associated with the second cell group, wherein a mode of operation of the wireless device for the second cell group comprises a resumed, normal, legacy or active mode. ### Claim 16 (depends on 12) The method of claim 12, wherein the at least one message includes an indication of a reconfiguration procedure for the second cell group. ### Claim 17 (depends on 16) The method of claim 16, wherein the reconfiguration procedure for the second cell group comprises a change of a special cell for the second cell group, a change of at least one other cell for the second cell group, a handover, a reconfiguration with sync of the second cell group, and/or a mobility procedure for the wireless device. ### Claim 18 (depends on 12) The method of claim 12, further comprising: receiving an indication of a mode of operation of the wireless device for the second cell group from a network node associated with the second cell group before sending the at least one message to the wireless device; and/or sending an indication of a mode of operation of the wireless device for the second cell group to a network node associated with the second cell group; and/or sending context information of the wireless device to a node associated with the first cell group reconfigured according to the reconfiguration procedure. ### Claim 19 (depends on 12) The method of claim 12, wherein the at least one message comprises at least one RRC message and/or at least one RRC reconfiguration message. ### Claim 20 (depends on 12) The method of claim 12, wherein the first cell group comprises a master cell group (MCG) and the second cell group comprises a secondary cell group (SCG), or the second cell group comprises a master cell group (MCG) and the first cell group comprises a secondary cell group (SCG). ### Claim 21 (depends on 12) The method of claim 12, wherein the wireless device comprises a User Equipment (UE), and/or the first network node comprises a base station, base station-control unit (CU), base station-distributed unit (DU), eNB, eNB-CU, eNB-DU, gNB, gNB-CU or gNB-DU. ### Claim 22 (depends on 12) The method of claim 12, wherein the first network node is associated with a special cell (SpCell) of the first cell group. ### Claim 23 A wireless device configured with Multi-Radio Access Technology Dual Connectivity (MR-DC), the wireless device comprising a processor and a memory, the memory containing instructions executable by the processor such that the wireless device is operable to: receive, from a first network node, at least one message in a reconfiguration procedure for a first cell group, wherein the at least one message indicates a power saving mode of operation to be applied by the wireless device for a second cell group, wherein the power saving mode comprises a suspended mode or dormant mode or deactivated mode or inactivated mode of operation, wherein the reconfiguration procedure for the first cell group is a mobility procedure for the wireless device, said mobility procedure comprising one or more of: a change of a special cell for the first cell group, a change of at least one other cell for the first cell group, a handover, and a reconfiguration with sync of the first cell group; and operate the second cell group according to the power saving mode of operation indicated in the at least one message. ### Claim 24 (depends on 23) The wireless device of claim 23, wherein the power saving mode of operation to be applied by the wireless device for the second cell group comprises a mode of operation of the wireless device for a special cell of the second cell group and/or one or more other cells of the second cell group. ### Claim 25 (depends on 23) The wireless device of claim 23, wherein the memory contains instructions executable by the processor such that the wireless device is operable to operate the second cell group according to the power saving mode of operation by at least one of: operating a special cell of the second cell group in the dormant mode; operating the special cell of the second cell group in the suspended mode; operating the special cell of the second cell group in the deactivated mode; operating the special cell of the second cell group in the inactivated mode; operating the special cell of the second cell group in a dormant bandwidth part (BWP); stopping monitoring a Physical Downlink Control Channel (PDCCH) of the special cell and/or at least one other cell of the second cell group; suspending transmission for data radio bearers (DRBs) associated with the second cell group; suspending transmission for DRBs associated with a special cell of the second cell group; suspending transmission for DRBs terminated at a node associated with the second cell group or a special cell and/or at least one other cell of the second cell group; suspending DRBs associated with the second cell group; operating the special cell of the second cell group according to discontinuous reception (DRX); and monitoring a PDCCH on the second cell group only during configured on-durations of a DRX cycle for the second cell group and/or at least one cell of the second cell group. ### Claim 26 A first network node for configuring a wireless device configured with Multi-Radio Access Technology Dual Connectivity (MR-DC), the first network node comprising a processor and a memory, the memory containing instructions executable by the processor such that the first network node is operable to: send, to the wireless device, at least one message in a reconfiguration procedure for a first cell group associated with the wireless device, wherein the reconfiguration procedure for the first cell group is a mobility procedure for the wireless device, said mobility procedure comprising one or more of: a change of a special cell for the first cell group, a change of at least one other cell for the first cell group, a handover and a reconfiguration with sync of the first cell group; wherein the at least one message indicates a power saving mode of operation of the wireless device for a second cell group, wherein the power saving mode comprises a suspend mode or dormant mode or deactivated mode or inactivated mode of operation.