# US 9,439,113 B2 · Optimizing parameter setting for handover of mobile terminals on a transportation platform > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,113 B2 - Document ID: US9439113B2 - Status: Granted - Kind: B2 - Application number: 14/883,376 - Filed: 2015-10-14 - Published: 2016-02-04 - Granted: 2016-09-06 - Earliest claimed: 2012-09-03 - Assignees: Huawei Technologies Sweden AB - Applicants: Huawei Technologies Sweden AB - Inventors: Tao Cai; Henrik Olofsson; Peter Legg; Derek Richards - Web page: https://patentgrep.com/patent/US9439113B2 ## CPC - H04W 36/0088: {Scheduling hand-off measurements} - H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds} - H04W 36/0079: {in case of hand-off failure or rejection} - H04W 36/00837: {Determination of triggering parameters for hand-off} - H04W 36/0085: {Hand-off measurements} - H04W 36/0009: {for a plurality of users or terminals, e.g. group communication or moving wireless networks (user group management H04W4/08; processing of subscriber group data H04W8/186)} - H04W 36/0058: {Transmission of hand-off measurement information, e.g. measurement reports} - H04W 84/005: {Moving wireless networks} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A system and method for optimizing handover parameters for a plurality of mobile terminals on a common transportation platform in a cellular network includes at least a first terminal and a second terminal and a controller. The controller is configured to determine that each of the first and second terminal are on the common transportation platform, monitor a status of a handover attempt of the first terminal, and if the handover attempt is successful, adopt handover parameter settings of the first terminal for the second terminal, and if the handover attempt is not successful, change handover parameter settings for the second terminal. ## Claims ### Claim 1 A method, for optimizing a handover parameter setting, applied to a handover procedure of mobile terminals on a common transportation platform in a communication cellular network, wherein a handover parameter setting is predetermined for the handover procedure, and the method comprises: monitoring, by a network device, a status of a handover attempt of a first mobile terminal on the common transportation platform, wherein the predetermined handover parameter setting is used in the handover attempt of the first mobile terminal; and controlling, by the network device according to the status of the handover attempt of the first mobile terminal, a handover parameter setting used in a handover attempt of a second mobile terminal on the common transportation platform, wherein the handover attempt of the second mobile terminal is made after the handover attempt of the first mobile terminal. ### Claim 2 (depends on 1) The method of claim 1, wherein the controlling the handover parameter setting used in the handover attempt of the second mobile terminal, comprises: adopting, when the handover attempt of the first mobile terminal is successful, the predetermined handover parameter setting as the handover parameter setting used in the handover attempt of the second mobile terminal; and adopting, when the handover attempt of the first mobile terminal is not successful, a handover parameter setting that is different from the predetermined handover parameter setting in the handover attempt of the second mobile terminal. ### Claim 3 (depends on 1) The method of claim 1, further comprising: setting, by the network device, different time to trigger the handover attempt of the first mobile terminal and the handover attempt of the second mobile terminal. ### Claim 4 (depends on 1) The method of claim 1, wherein when the handover attempt of the first mobile terminal is not successful, the method further comprises: controlling, by the network device, the second mobile terminal to delay a timing of the handover attempt of the second mobile terminal. ### Claim 5 (depends on 1) The method of claim 1, wherein when the handover attempt of the first mobile terminal is not successful, the method further comprises: controlling, by the network device, the second mobile terminal advance a timing of the handover attempt of the second mobile terminal. ### Claim 6 (depends on 1) The method of claim 1, further comprising: determining, by the network device, whether the first mobile terminal and the second mobile terminal are on the common transportation platform. ### Claim 7 (depends on 1) The method of claim 1, wherein the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, comprises: receiving signal strength measurements for different cells along a route of the common transportation platform; and determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the received signal strength measurements. ### Claim 8 (depends on 1) The method of claim 1, wherein the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, comprises: receiving an identifier of the common transportation platform or an identifier of an onboard short range communication device on the common transportation platform; and determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the identifier of the common transportation platform or the identifier of the onboard short range communication device. ### Claim 9 (depends on 1) The method of claim 1, wherein the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, comprises: receiving an identifier of the first mobile terminal and an identifier of the second mobile terminal; and determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the identifier of the first mobile terminal and the identifier of the second mobile terminal. ### Claim 10 A network device comprising a memory in communication with a processor, the memory including program instructions for execution by the processor to: optimize a handover parameter setting, applied to a handover procedure of mobile terminals on a common transportation platform in a communication cellular network, wherein a handover parameter setting is predetermined for the handover procedure, wherein the program instructions to optimize the handover parameter setting comprise instructions to monitor a status of a handover attempt of a first mobile terminal on the common transportation platform, wherein the predetermined handover parameter setting is used in the handover attempt of the first mobile terminal; and control, according to the status of the handover attempt of the first mobile terminal, a handover parameter setting used in a handover attempt of a second mobile terminal on the common transportation platform, wherein the handover attempt of the second mobile terminal is made after the handover attempt of the first mobile terminal. ### Claim 11 (depends on 10) The device of claim 10, wherein for controlling the handover parameter setting used in the handover attempt of the second mobile terminal, the program instructions for execution by the processor to: adopt, when the handover attempt of the first mobile terminal is successful, the predetermined handover parameter setting as the handover parameter setting used in the handover attempt of the second mobile terminal; and adopt, when the handover attempt of the first mobile terminal is not successful, a handover parameter setting that is different from the predetermined handover parameter setting in the handover attempt of the second mobile terminal. ### Claim 12 (depends on 10) The device of claim 10, wherein the memory further comprises program instructions for execution by the processor to: set different time to trigger the handover attempt of the first mobile terminal and the handover attempt of the second mobile terminal. ### Claim 13 (depends on 10) The device of claim 10, wherein when the handover attempt of the first mobile terminal is not successful, the memory further comprises program instructions for execution by the processor to: control the second mobile terminal to delay a timing of the handover attempt of the second mobile terminal. ### Claim 14 (depends on 10) The device of claim 10, wherein when the handover attempt of the first mobile terminal is not successful, the memory further comprises program instructions for execution by the processor to: control the second mobile terminal advance a timing of the handover attempt of the second mobile terminal. ### Claim 15 (depends on 10) The device of claim 10, wherein the memory further comprises program instructions for execution by the processor to: determine whether the first mobile terminal and the second mobile terminal are on the common transportation platform. ### Claim 16 (depends on 15) The device of claim 15, wherein for the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, the program instructions for execution by the processor to: receive signal strength measurements for different cells along a route of the common transportation platform; and determine whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the received signal strength measurements. ### Claim 17 (depends on 15) The device of claim 15, wherein for the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, the program instructions for execution by the processor to: receive an identifier of the common transportation platform or an identifier of an onboard short range communication device on the common transportation platform; determine whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the identifier of the common transportation platform or the identifier of the onboard short range communication device. ### Claim 18 (depends on 15) The device of claim 15, wherein for the determining whether the first mobile terminal and the second mobile terminal are on the common transportation platform, the program instructions for execution by the processor to: receive an identifier of the first mobile terminal and an identifier of the second mobile terminal; and determine whether the first mobile terminal and the second mobile terminal are on the common transportation platform by using the identifier of the first mobile terminal and the identifier of the second mobile terminal.