# US 2020/0288362 A1 · Supporting mobility during low activity state > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288362 A1 - Document ID: US20200288362A1 - Status: Published application - Kind: A1 - Application number: 16/494,950 - Filed: 2017-03-23 - Published: 2020-09-10 - Earliest claimed: 2017-03-23 - Assignees: Nokia Technologies Oy - Applicants: Nokia Technologies Oy - Inventors: Mikko Säily; Tommi Jokela; Sofonias Hailu - Web page: https://patentgrep.com/patent/US20200288362A1 ## CPC - H04W 12/06: Authentication - H04W 48/20: Selecting an access point - H04W 52/0209: {in terminal devices} - H04W 74/0833: Random access procedures, e.g. with 4-step access - H04W 74/006: {in the downlink, i.e. towards the terminal} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An embodiment may comprise: transmitting, by a user device in a low activity state a type of the low activity state being according to an anchor access node, a random access message to a network node providing a target cell of a cell reselection. The method may also comprise, in response to receiving a random access response for the random access message from the network node providing the target cell, transmitting, to the network node providing the target cell, a radio connection reactivation request, the reactivation request comprising an indication of an anchor access node of the user device. The method may also comprise, in response to the radio connection reactivation request, receiving a radio connection reactivation message indicating a radio connection reactivation to the anchor access node as a logical link associated with a radio link provided by the target cell of the cell reselection or receiving an inactivation message. ## Claims ### Claim at position 1 1-29. (canceled) ### Claim 30 A method, comprising: transmitting, by a user device in a low activity state a type of the low activity state being according to an anchor access node, a random-access message to a network node providing a target cell of a cell reselection; in response to receiving a random-access response for the random-access message from the network node providing the target cell, transmitting, to the network node providing the target cell, a radio connection reactivation request, the reactivation request comprising an indication of the anchor access node of the user device, and in response to the radio connection reactivation request, receiving a radio connection reactivation message indicating a radio connection reactivation to the anchor access node as a logical link associated with a radio link provided by the target cell of the cell reselection or receiving an inactivation message. ### Claim 31 (depends on 30) The method of claim 30, wherein the radio connection reactivation request comprises authentication information, wherein a type of the authentication information is according to the anchor access node. ### Claim 32 (depends on 30) The method of claim 30, further comprising: carrying out a state transition to a connected state, and during the state transition, establishing at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as master access node for the at least one additional radio connection. ### Claim 33 (depends on 30) The method of claim 30, carrying out a state transition to a connected state, and during the state transition, establishing at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as master access node for the at least one additional radio connection, wherein the user device stores context information, wherein a type of the context information is according to the anchor access node. ### Claim 34 (depends on 30) The method of claim 30, further comprising: transmitting completion messages for the radio connection reactivation and/or the establishing the at least one secondary radio connection. ### Claim 35 (depends on 30) The method of claim 30, wherein the radio connection reactivation request comprises data and an indication of the end of data load, further comprising: receiving the radio connection reactivation message indicating the radio connection reactivation as a temporal connection, or instead of receiving the radio connection reactivation message, receiving the inactivation message. ### Claim 36 An apparatus, comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to transmit, by a user device in a low activity state a type of the low activity state being according to an anchor access node, a random-access message to a network node providing a target cell of a cell reselection; in response to receiving a random-access response for the random access message from the network node providing the target cell, transmit, to the network node providing the target cell, a radio connection reactivation request, the reactivation request comprising an indication of the anchor access node of the user device, and in response to the radio connection reactivation request, receive a radio connection reactivation message indicating a radio connection reactivation to the anchor access node as a logical link associated with a radio link provided by the target cell of the cell reselection, or receive an inactivation message. ### Claim 37 (depends on 36) The apparatus of claim 36, wherein the radio connection reactivation request comprises authentication information, wherein a type of the authentication information is according to the anchor access node. ### Claim 38 (depends on 36) The apparatus of claim 36, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to: carry out a state transition to a connected state, and during the state transition, establish at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as master access node for the at least one additional radio connection. ### Claim 39 (depends on 36) The apparatus of claim 36, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to transmit completion messages for the radio connection reactivation and/or the establishing the at least one secondary radio connection. ### Claim 40 (depends on 36) The apparatus of claim 36, wherein the radio connection reactivation request comprises data and an indication of the end of data load, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive the radio connection reactivation message indicating the radio connection reactivation as a temporal connection, or instead of receiving the radio connection reactivation message, receiving the inactivation message. ### Claim 41 An apparatus comprising: at least one processor; and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive, by an anchor access node for a user device, a radio connection reactivation request in relation to a cell reselection procedure and during a state transition of the user device to a connected state, and carry out a radio connection reactivation, wherein the radio connection to the user device is reactivated as a logical link associated with a radio link provided by a target cell of the cell reselection, or transmitting an inactivation message. ### Claim 42 (depends on 41) The apparatus of claim 41, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to verify credibility of the radio connection reactivation request by using authentication information provided in the radio connection reactivation request. ### Claim 43 (depends on 41) The apparatus of claim 41, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to initiate establishing of at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as a master access node for the at least one secondary radio connection. ### Claim 44 (depends on 41) The apparatus of claim 41, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to initiate establishing of at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as a master access node for the at least one secondary radio connection and wherein the initiating establishing comprises transmitting context information of the user device to a cell providing at least partly the multi-connectivity service or the relaying. ### Claim 45 (depends on 41) The apparatus of claim 41, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to initiate establishing of at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as a master access node for the at least one secondary radio connection and wherein the initiating establishing comprises generating and transmitting a security key for the at least one secondary radio connection. ### Claim 46 (depends on 41) The apparatus of claim 41, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to initiate establishing of at least one secondary radio connection for a multi-connectivity service or relaying, wherein the anchor access node acts as a master access node for the at least one secondary radio connection and wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to, after the state transition, transfer control of radio connections of the user device to a cell providing the at least one secondary radio connection. ### Claim 47 (depends on 41) The apparatus of claim 41, wherein the radio connection reactivation request comprises data and an indication of the end of data load, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to carry out the radio connection reactivation as a temporal connection or instead of carrying out the radio connection reactivation, transmitting the inactivation message. ### Claim 48 A distributed computing system, comprising: a radio node, configured to: receive a radio connection reactivation request in relation to a cell reselection procedure and during a state transition of the user device to a connected state, and configured to communicate the radio connection reactivation request to a server and to the user device, and the server configured to: carry out a radio connection reactivation, wherein the radio connection is reactivated as a logical link associated with a radio link provided by a target cell of the cell reselection and communicate the radio connection reactivation to the radio node or communicate a radio connection inactivation message to the radio node.