# US 2019/0174571 A1 · Light connectivity and autonomous mobility > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174571 A1 - Document ID: US20190174571A1 - Status: Published application - Kind: A1 - Application number: 16/324,025 - Filed: 2017-08-09 - Published: 2019-06-06 - Earliest claimed: 2016-08-10 - Assignees: IDAC Holdings, Inc. - Applicants: IDAC Holdings, Inc. - Inventors: Yugeswar Deenoo; Ghyslain Pelletier; Ping Hsuan Tan; Martino M Freda - Web page: https://patentgrep.com/patent/US20190174571A1 ## CPC - H04W 76/27: Transitions between radio resource control [RRC] states - H04W 68/02: Arrangements for increasing efficiency of notification or paging channel - H04W 76/11: Allocation or use of connection identifiers - H04W 76/28: Discontinuous transmission [DTX]; Discontinuous reception [DRX] - H04W 36/087: {between radio units of access points} - H04W 36/302: {due to low signal strength} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Light and/or Inactive state connectivity and/or autonomous mobility techniques are contemplated. A WTRU may, for example, have an inactive/idle mode, a light connected/loosely connected/Inactive mode and/or a connected/fully connected/Active mode. A WTRU in light connected mode may have a WTRU context stored in a RAN. A WTRU may perform an area monitoring procedure while in light connected state. A WTRU may engage in autonomous mobility during light connectivity. A WTRU may move within a logical area (e.g., a RAN paging area), perhaps without notifying the network. The WTRU may provide notice when it has moved outside a logical area (e.g., update RAN paging area). Mobility in light connected state may be network controlled (e.g., to enable handover when data transfer may be allowed and/or ongoing). A WTRU may be reachable during a light connectivity state. A WTRU may engage in autonomous mobility during light connectivity and/or an Inactive state. ## Claims ### Claim 1 A wireless transmit/receive unit (WTRU) comprising circuitry, including a receiver, a transmitter, a processor, and memory, wherein: the receiver is configured to: receive, from a network node of an access network, (i) a request to transition to a radio resource control (RRC) inactive state and (ii) context information indicating one or more logical channels (LCHs) that remain available for uplink (UL) transmission while in the RRC inactive state; the processor is configured to: transition to the RRC Inactive state with respect to the network node while remaining in an RRC connected state with respect to a core network; and the transmitter is configured to: on condition that UL data associated with any of the indicated one or more LCHs becomes available for transmission and the UL data satisfies one or more criteria for transmission while in the RRC inactive state, transmit the UL data and an identity of the WTRU while in the RRC Inactive state. ### Claim at position 2 2-20. (canceled) ### Claim 21 (depends on 1) The WTRU of claim 1, wherein the transmitter is configured to: on condition that UL data associated with an LCH not among the indicated one or more LCHs becomes available for transmission, transmit, in the RRC inactive state, the identity of the WTRU and an RRC message to request to transition back to the RRC connected state. ### Claim 22 (depends on 1) The WTRU of claim 1, wherein the transmitter is configured to: on condition that the UL data associated with the indicated one or more LCHs becomes available for transmission and the UL data does not satisfy the one or more criteria for transmission while in the RRC inactive state, transmit, in the RRC inactive state, the identity of the WTRU and an RRC message to request to transition back to the RRC connected state. ### Claim 23 (depends on 1) The WTRU of claim 1, wherein the transmitter is configured to: on condition that the UL data associated with the indicated one or more LCHs becomes available for transmission and a portion of the UL data satisfies the one or more criteria for transmission while in the RRC inactive state, transmit, in the RRC inactive state, the portion of the UL data, the identity of the WTRU, and an RRC message to request to transition back to the RRC connected state. ### Claim 24 (depends on 1) The WTRU of claim 1, wherein the one or more criteria for transmission comprise any of: a criterion that an amount of the UL data is less than a predetermined threshold; a criterion that a size of an available UL grant can accommodate the amount of the UL data; a criterion that the WTRU is within a dynamically configured logical area; and a criterion that the WTRU is within a semi-static configured area. ### Claim 25 (depends on 1) The WTRU of claim 1, wherein the processor is configured to perform extended monitoring of a control channel for a predetermined duration after the UL data is transmitted in the RRC inactive state. ### Claim 26 (depends on 1) The WTRU of claim 1, wherein the receiver, the transmitter, and/or the processor are configured to: communicate with a first transmit/receive point (TRP); determine, autonomously, in the RRC inactive state to engage in mobility between the first TRP and a second TRP based on a condition; and move, autonomously, in the RRC inactive state from the first TRP to the second TRP upon an occurrence of the condition. ### Claim 27 (depends on 26) The WTRU of claim 26, wherein first and second sets of resources are used to communicate with the first and second TRPs, respectively, and wherein the first and second TRPs are associated with first and second radio access technologies (RATs), respectively. ### Claim 28 (depends on 26) The WTRU of claim 26, wherein the receiver, the transmitter, and/or the processor are configured to communicate with the second TRP in the RRC connected state. ### Claim 29 (depends on 26) The WTRU of claim 26, wherein the condition comprises any of: a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a link quality perspective; a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a service perspective; a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a resource availability perspective; and a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a capability perspective. ### Claim 30 A method used by a wireless transmit/receive unit (WTRU) for wireless communications, the method comprising: receiving, from a network node of an access network, (i) a request to transition to a radio resource control (RRC) inactive state and (ii) context information indicating one or more logical channels (LCHs) that remain available for uplink (UL) transmission while in the RRC inactive state; transitioning to the RRC inactive state with respect to the network node while remaining in an RRC connected state with respect to a core network; and on condition that UL data associated with any of the indicated one or more LCHs becomes available for transmission and the UL data satisfies one or more criteria for transmission while in the RRC inactive state, transmitting the UL data and an identity of the WTRU while in the RRC inactive state. ### Claim 31 (depends on 30) The method of claim 30, further comprising: on condition that UL data associated with an LCH not among the indicated one or more LCHs becomes available for transmission, transmitting, in the RRC inactive state, the identity of the WTRU and an RRC message to request to transition back to the RRC connected state. ### Claim 32 (depends on 30) The method of claim 30, further comprising: on condition that the UL data associated with the indicated one or more LCHs becomes available for transmission and the UL data does not satisfy the one or more criteria for transmission while in the RRC inactive state, transmitting, in the RRC inactive state, the identity of the WTRU and an RRC message to request to transition back to the RRC connected state. ### Claim 33 (depends on 30) The method of claim 30, further comprising: on condition that the UL data associated with the indicated one or more LCHs becomes available for transmission and a portion of the UL data satisfies the one or more criteria for transmission while in the RRC inactive state, transmitting, in the RRC inactive state, the portion of the UL data, the identity of the WTRU, and an RRC message to request to transition back to the RRC connected state. ### Claim 34 (depends on 30) The method of claim 30, wherein the one or more criteria for transmission comprise any of: a criterion that an amount of the UL data is less than a predetermined threshold; a criterion that a size of an available UL grant can accommodate the amount of the UL data; a criterion that the WTRU is within a dynamically configured logical area; and a criterion that the WTRU is within a semi-static configured area. ### Claim 35 (depends on 30) The method of claim 30, further comprising: performing extended monitoring of a control channel for a predetermined duration after the UL data is transmitted in the RRC inactive state. ### Claim 36 (depends on 30) The method of claim 30, further comprising: communicating with a first transmit/receive point (TRP); determining, autonomously, in the RRC inactive state to engage in mobility between the first TRP and a second TRP based on a condition; and moving, autonomously, in the RRC inactive state from the first TRP to the second TRP upon an occurrence of the condition. ### Claim 37 (depends on 36) The method of claim 36, wherein first and second sets of resources are used to communicate with the first and second TRPs, respectively, and wherein the first and second TRPs are associated with first and second radio access technologies (RATs), respectively. ### Claim 38 (depends on 36) The method of claim 36, further comprising communicating with the second TRP in the RRC connected state. ### Claim 39 (depends on 36) The method of claim 36, wherein the condition comprises any of: a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a link quality perspective; a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a service perspective; a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a resource availability perspective; and a determination of an availability of a more suitable cell associated with the second TRP relative to a current cell associated with the first TRP from a capability perspective.