# US 12,010,749 B2 · Secondary cell group activation by bandwidth part for dual connectivity with multiple radio access technologies > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,749 B2 - Document ID: US12010749B2 - Status: Granted - Kind: B2 - Application number: 17/304,411 - Filed: 2021-06-21 - Published: 2022-01-06 - Granted: 2024-06-11 - Earliest claimed: 2020-07-01 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Punyaslok Purkayastha; Ravi Agarwal; Gavin Bernard Horn; Ozcan Ozturk - Web page: https://patentgrep.com/patent/US12010749B2 ## CPC - H04W 52/0258: {controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day} - H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer - G06F 1/3209: Monitoring remote activity, e.g. over telephone lines or network connections - G06F 1/3278: {Power saving in modem or I/O interface} - G06F 1/3287: by switching off individual functional units in the computer system - H04L 5/001: {the frequencies being arranged in component carriers} - H04L 5/0098: {Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands} - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/0222: {in packet switched networks} - H04W 56/001: {Synchronization between nodes} - 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 72/54: based on quality criteria - H04W 76/15: Setup of multiple wireless link connections - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 80/02: Data link layer protocols - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - Y02D 30/70: in wireless communication networks - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may operate, in connection with a secondary cell group (SCG) for multiple radio access technology dual connectivity, in one of an SCG dormant state in a dormant downlink bandwidth part (BWP) configured for a primary secondary cell of the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary secondary cell. The UE may receive a control message associated with activating the SCG for the UE, the control message indicating a BWP switch for the UE. The UE may switch, in connection with receiving the control message, from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP in which the UE operates in an SCG activated state. Numerous other aspects are provided. ## Claims ### Claim 1 A user equipment (UE) for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: operate, in connection with a secondary cell group (SCG) for multiple radio access technology dual connectivity, in an SCG deactivated state in a downlink bandwidth part (BWP) configured for a primary secondary cell of the SCG; receive a control message associated with activating the SCG for the UE, the control message indicating a BWP switch for the UE; switch, in connection with receiving the control message, from the downlink BWP to an activated downlink BWP in which the UE operates in an SCG activated state; and transmit, after entering the SCG activated state from the SCG deactivated state, uplink communications without performing a random access channel procedure. ### Claim 2 (depends on 1) The UE of claim 1, wherein the control message includes downlink control information received on a primary cell of a master cell group associated with the SCG. ### Claim 3 (depends on 1) The UE of claim 1, wherein the control message includes a medium access control control element (MAC-CE) received on a primary cell or an activated secondary cell of a master cell group associated with the SCG. ### Claim 4 (depends on 1) The UE of claim 1, wherein the one or more processors are configured to, after entering the SCG activated state from the SCG deactivated state, perform a random access channel procedure. ### Claim 5 (depends on 1) The UE of claim 1, wherein the one or more processors are configured to: receive another control message associated with transitioning to the SCG deactivated state, the another control message indicating another BWP switch; and switch, in connection with receiving the another control message, to the downlink BWP for operating in the SCG deactivated state. ### Claim 6 (depends on 1) The UE of claim 1, wherein the one or more processors are configured to: receive a medium access control control element (MAC-CE) on the primary secondary cell; and transition to the SCG deactivated state based at least in part on receiving the MAC-CE. ### Claim 7 (depends on 1) The UE of claim 1, wherein the UE operating in the SCG deactivated state is to refrain from monitoring a physical downlink control channel on the primary secondary cell, refrain from transmitting uplink communications on the primary secondary cell, refrain from performing channel state information (CSI) measurements on the primary secondary cell, refrain from maintaining uplink timing alignment with a secondary node in the primary secondary cell, and perform radio resource management measurements on the primary secondary cell. ### Claim 8 (depends on 1) The UE of claim 1, wherein the control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG. ### Claim 9 A network node for wireless communication, comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to: determine to instruct a user equipment (UE) to enter into a secondary cell group (SCG) deactivated state or an SCG activated state, in connection with multiple radio access technology dual connectivity; transmit a control message to the UE indicating for the UE to switch to a deactivated downlink bandwidth part (BWP) configured for a primary secondary cell of the SCG for operating in the SCG deactivated state or an activated downlink BWP configured for the primary secondary cell for operating in the SCG activated state; determine to instruct the UE to enter the SCG deactivated state; and transmit a medium access control control element (MAC-CE) on the primary secondary cell, indicating for the UE to transition to the SCG deactivated state, wherein the MAC-CE is to cause the UE to operate in the SCG deactivated state in which the UE is configured to refrain from monitoring a physical downlink control channel on a primary secondary cell of the SCG, refrain from transmitting uplink communications on the primary secondary cell, refrain from performing channel state information (CSI) measurements on the primary secondary cell, refrain from maintaining uplink timing alignment with a secondary node in the primary secondary cell, and perform radio resource management measurements on the primary secondary cell. ### Claim 10 (depends on 9) The network node of claim 9, wherein the one or more processors, to transmit the control message, are configured to transmit the control message via downlink control information on a primary cell of a master cell group associated with the SCG. ### Claim 11 (depends on 9) The network node of claim 9, wherein the control message includes a medium access control control element (MAC-CE) on a primary cell or an activated secondary cell of a master cell group associated with the SCG. ### Claim 12 (depends on 9) The network node of claim 9, wherein the control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG. ### Claim 13 A method of wireless communication performed by a user equipment (UE), comprising: operating, in connection with a secondary cell group (SCG) for multiple radio access technology dual connectivity, in an SCG deactivated state in a downlink bandwidth part (BWP) configured for a primary secondary cell of the SCG; receiving a control message associated with activating the SCG for the UE, the control message indicating a BWP switch for the UE; switching, in connection with receiving the control message, from the downlink BWP to an activated downlink BWP in which the UE operates in an SCG activated state; and transmit, after entering the SCG activated state from the SCG deactivated state, uplink communications without performing a random access channel procedure. ### Claim 14 (depends on 13) The method of claim 13, further comprising: receiving another control message associated with transitioning to the SCG deactivated state, the another control message indicating another BWP switch; and switching, in connection with receiving the another control message, to the deactivated downlink BWP for operating in the SCG deactivated state. ### Claim 15 (depends on 13) The method of claim 13, further comprising: receiving a medium access control control element (MAC-CE) on the primary secondary cell; and transitioning to the SCG deactivated state based at least in part on receiving the MAC-CE. ### Claim 16 (depends on 13) The method of claim 13, wherein the control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG. ### Claim 17 (depends on 13) The method of claim 13, wherein the control message includes downlink control information received on a primary cell of a master cell group associated with the SCG. ### Claim 18 (depends on 13) The method of claim 13, wherein the control message includes a medium access control control element (MAC-CE) received on a primary cell or an activated secondary cell of a master cell group associated with the SCG. ### Claim 19 (depends on 13) The method of claim 13, further comprising: after entering the SCG activated state from the SCG deactivated state, performing a random access channel procedure. ### Claim 20 (depends on 13) The method of claim 13, further comprising: after entering the SCG activated state from the SCG deactivated state, transmitting uplink communications without performing a random access channel procedure. ### Claim 21 (depends on 13) The method of claim 13, wherein transitioning to the SCG deactivated state comprises operating in the SCG deactivated state, in which the UE is configured to refrain from monitoring a physical downlink control channel on a primary secondary cell of the SCG, refrain from transmitting uplink communications on the primary secondary cell, refrain from performing channel state information (CSI) measurements on the primary secondary cell, refrain from maintaining uplink timing alignment with a secondary node in the primary secondary cell, and perform radio resource management measurements on the primary secondary cell. ### Claim 22 A method of wireless communication performed by a network node, comprising: determining to instruct a user equipment (UE) to enter into a secondary cell group (SCG) deactivated state or an SCG activated state, in connection with multiple radio access technology dual connectivity; transmitting a control message to the UE indicating for the UE to switch to a deactivated downlink bandwidth part (BWP) configured for a primary secondary cell of the SCG for operating in the SCG deactivated state or an activated downlink BWP configured for the primary secondary cell for operating in the SCG activated state; transmitting a medium access control control element (MAC-CE) on the primary secondary cell, indicating for the UE to transition to the SCG deactivated state, wherein the MAC-CE is to cause the UE to operate in the SCG deactivated state in which the UE is configured to refrain from monitoring a physical downlink control channel on a primary secondary cell of the SCG, refrain from transmitting uplink communications on the primary secondary cell, refrain from performing channel state information (CSI) measurements on the primary secondary cell, refrain from maintaining uplink timing alignment with a secondary node in the primary secondary cell, and perform radio resource management measurements on the primary secondary cell. ### Claim 23 (depends on 22) The method of claim 22, further comprising: determining to instruct the UE to enter the SCG deactivated state; and transmitting the MAC-CE on the primary secondary cell, indicating for the UE to transition to the SCG deactivated state. ### Claim 24 (depends on 22) The method of claim 22, wherein the UE operating in the SCG deactivated state is to refrain from monitoring a physical downlink control channel on the primary secondary cell, refrain from transmitting uplink communications on the primary secondary cell, refrain from performing channel state information (CSI) measurements on the primary secondary cell, refrain from maintaining uplink timing alignment with a secondary node in the primary secondary cell, and perform radio resource management measurements on the primary secondary cell. ### Claim 25 (depends on 22) The method of claim 22, further comprising: transmitting the control message via downlink control information on a primary cell of a master cell group associated with the SCG. ### Claim 26 (depends on 22) The method of claim 22, wherein the control message includes the MAC-CE on a primary cell or an activated secondary cell of a master cell group associated with the SCG.