# US 10,484,913 B2 · Communication control method, communication control device, and communication system for causing readiness for movement of a communication terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,913 B2 - Document ID: US10484913B2 - Status: Granted - Kind: B2 - Application number: 15/740,647 - Filed: 2016-06-24 - Published: 2018-07-05 - Granted: 2019-11-19 - Earliest claimed: 2015-06-29 - Assignees: Ntt Docomo, Inc. - Applicants: Ntt Docomo, Inc. - Inventors: Takeo Yamasaki; Motoshi Tamura; Shigeru Iwashina; Lan Chen - Web page: https://patentgrep.com/patent/US10484913B2 ## CPC - H04W 36/0016: {Hand-off preparation specially adapted for end-to-end data sessions} - H04W 36/0033: {with transfer of context information} - H04W 36/16: Performing reselection for specific purposes - H04W 88/18: Service support devices; Network management devices - H04W 36/08: Reselecting an access point - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Provided are a communication control method, a communication control device, and a communication system that can appropriately change a device on a network that executes request processing from a terminal. In a node changing device 10, a sequence monitoring unit 12 detects handover of a UE 90. When the handover is detected, a placement calculation unit 14 acquires node information in the vicinity of a destination and activates nodes in the vicinity based on the node information. In this manner, upon detecting movement of a communication terminal, the node changing device 10 activates nodes in the vicinity of the destination of the communication terminal, and it is thereby possible to prevent an increase in communication delay even when the communication terminal is moved. ## Claims ### Claim 1 A communication control method in a communication system including a node for communicating with a communication terminal and executing request processing from the communication terminal without requesting another node for processing, the method comprising: making a change so that a first destination node, being a node linked to a destination wireless base station, and a second destination node, being a node linked to a wireless base station located within a specified range of the destination wireless base station, become ready to receive a request from the communication terminal and execute request processing, the making of the change being performed in response to a notification received by a node changing device from a management device configured to perform mobility management on the communication terminal when handover processing of the communication terminal is detected by the management device, wherein the making of the change includes the first and second destination nodes activating a virtual machine for executing request processing, the destination wireless base station pre-stores identifiers relating to other wireless base stations in the specified range of the destination wireless base station, and the wireless base station located in the specified range of the destination wireless base station is identified in accordance with the destination wireless base station. ### Claim 2 (depends on 1) The communication control method according to claim 1, wherein a node that has executed request processing from the communication terminal terminates a virtual machine for executing the request processing after the destination node becomes ready for request processing. ### Claim 3 (depends on 1) The communication control method according to claim 1, wherein the making of the change includes changing a node having a virtual machine for executing request processing from the communication terminal to the destination node. ### Claim 4 A communication control device in a communication system including a node for communicating with a communication terminal and executing request processing from the communication terminal without requesting another node for processing, the communication control device comprising: circuitry configured to make a change so that a first destination node, being a node linked to a destination wireless base station, and a second destination node, being a node linked to a wireless base station located within a specified range of the destination wireless base station, become ready to receive a request from the communication terminal and execute request processing, the making of the change being performed in response to a notification received by a node changing device from a management device configured to perform mobility management on the communication terminal when handover processing of the communication terminal is detected by the management device, wherein the circuitry is configured to make the change such that the first and second destination nodes activate a virtual machine for executing request processing, the destination wireless base station pre-stores identifiers relating to other wireless base stations in the specified range of the destination wireless base station, and the wireless base station located in the specified range of the destination wireless base station is identified in accordance with the destination wireless base station. ### Claim 5 A communication system including a node for communicating with a communication terminal and executing request processing from the communication terminal without requesting another node for processing, and a communication control device for controlling the node, the communication control device comprising: circuitry configured to make a change so that a first destination node, being a node linked to a destination wireless base station, and a second destination node, being a node linked to a wireless base station located within a specified range of the destination wireless base station, become ready to receive a request from the communication terminal and execute request processing, the making of the change being performed in response to a notification received by a node changing device from a management device configured to perform mobility management on the communication terminal when handover processing of the communication terminal is detected by the management device, wherein the circuitry is configured to make the change such that the first and second destination nodes activate a virtual machine for executing request processing, the destination wireless base station pre-stores identifiers relating to other wireless base stations in the specified range of the destination wireless base station, the wireless base station located in the specified range of the destination wireless base station is identified in accordance with the destination wireless base station, and when the node becomes ready for request processing, the node receives a request from the communication terminal and executes request processing.