# US 9,439,107 B2 · Handover in a wireless telecommunication network environment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,439,107 B2 - Document ID: US9439107B2 - Status: Granted - Kind: B2 - Application number: 14/174,044 - Filed: 2014-02-06 - Published: 2015-08-06 - Granted: 2016-09-06 - Earliest claimed: 2014-02-06 - Assignees: Cisco Technology, Inc. - Applicants: Cisco Technology, Inc. - Inventors: Atul Jha - Web page: https://patentgrep.com/patent/US9439107B2 ## CPC - H04W 36/0016: {Hand-off preparation specially adapted for end-to-end data sessions} - H04W 36/0033: {with transfer of context information} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An example method for handover in a wireless telecommunication network environment is provided and includes receiving a handover request from a first Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB) for an application executing at a user equipment (UE) in a long term evolution (LTE) wireless network environment, the handover request being sent by the first eNB to a second eNB, determining, at the second eNB, whether substantially all mandatory bearers required by the application can be accepted at the second eNB, and responding by the second eNB to the first eNB with a handover preparation failure message when substantially all mandatory bearers required by the application cannot be accepted at the second eNB. In specific embodiments, the handover request includes a list of substantially all mandatory bearers required by the application. ## Claims ### Claim 1 A method, comprising: receiving a handover request from a first Evolved Universal Terrestrial Radio Access Network (E-UTRAN) nodeB (eNB) for an application executing at a user equipment (UE) in a long term evolution (LTE) wireless network environment, wherein the handover request is sent by the first eNB to a second eNB and includes an indication of mandatory bearers required by the application for using a packet data network (PDN) connection associated with the handover request, wherein the mandatory bearers comprise a portion of a plurality of bearers, wherein the mandatory bearers are specific to the application, wherein the indication comprises an additional bit in the handover request that is set only for mandatory bearers; determining, at the second eNB, whether all the mandatory bearers required by the application indicated in the handover request can be accepted at the second eNB, wherein the determining comprises examining the additional bit in the handover request at the second eNB; and responding by the second eNB to the first eNB with a handover preparation failure message when all the mandatory bearers required by the application cannot be accepted at the second eNB. ### Claim 2 (depends on 1) The method of claim 1, wherein the handover request includes a list of the mandatory bearers required by the application. ### Claim 3 (depends on 2) The method of claim 2, wherein a flag in the handover request is set to indicate that a bearer in the handover request is one of the mandatory bearers required by the application. ### Claim 4 (depends on 2) The method of claim 2, wherein the method further comprises identifying the mandatory bearers, wherein the second eNB is configured with another list of bearers with specific Quality of Service (QoS) class identifiers (QCI) that can be accepted by the second eNB for the application. ### Claim 5 (depends on 4) The method of claim 4, wherein a maintenance entity configures the second eNB with the another list of bearers with specific QCIs that can be accepted by the second eNB for the application. ### Claim 6 (depends on 1) The method of claim 1, wherein the method further comprises responding by the second eNB to the first eNB with a handover request acknowledgement when the mandatory bearers required by the application are accepted at the second eNB. ### Claim 7 (depends on 6) The method of claim 6, wherein the first eNB determines handover of the UE to the second eNB when the first eNB receives the handover request acknowledgement. ### Claim 8 (depends on 1) The method of claim 1, wherein the LTE wireless network comprises an enterprise network. ### Claim 9 Non-transitory tangible media that includes instructions for execution, which when executed by a processor, is operable to perform operations comprising: receiving a handover request from a first eNB for an application executing at a UE in a LTE wireless network environment, wherein the handover request is sent by the first eNB to a second eNB and includes an indication of mandatory bearers required by the application for using a PDN connection associated with the handover request, wherein the mandatory bearers comprise a portion of a plurality of bearers, wherein the mandatory bearers are specific to the application, wherein the indication comprises an additional bit in the handover request that is set only for mandatory bearers; determining, at the second eNB, whether all the mandatory bearers required by the application indicated in the handover request can be accepted at the second eNB, wherein the determining comprises examining the additional bit in the handover request at the second eNB; and responding by the second eNB to the first eNB with a handover preparation failure message when all the mandatory bearers required by the application cannot be accepted at the second eNB. ### Claim 10 (depends on 9) The media of claim 9, wherein the handover request includes a list of the mandatory bearers required by the application. ### Claim 11 (depends on 10) The media of claim 10, wherein a flag in the handover request is set to indicate that a bearer in the handover request is one of the mandatory bearers required by the application. ### Claim 12 (depends on 9) The media of claim 9, wherein the method further comprises identifying the mandatory bearers, wherein the second eNB is configured with another list of bearers with specific QCIs that can be accepted by the second eNB for the application. ### Claim 13 (depends on 12) The media of claim 12, wherein a maintenance entity configures the second eNB with the another list of bearers with specific QCIs that can be accepted by the second eNB for the application. ### Claim 14 (depends on 9) The media of claim 9, wherein the operations further comprise responding by the second eNB to the first eNB with a handover request acknowledgement when the mandatory bearers required by the application are accepted at the second eNB. ### Claim 15 (depends on 14) The media of claim 14, wherein the first eNB determines handover of the UE to the second eNB when the first eNB receives the handover request acknowledgement. ### Claim 16 An apparatus, comprising: a memory element for storing data; and a processor, wherein the processor executes instructions associated with the data, wherein the processor and the memory element cooperate, such that the apparatus is configured for: receiving a handover request from a first eNB for an application executing at a UE in a LTE wireless network environment, wherein the handover request is sent by the first eNB to a second eNB and includes an indication of mandatory bearers required by the application for using a PDN connection associated with the handover request, wherein the mandatory bearers comprise a portion of a plurality of bearers, wherein the mandatory bearers are specific to the application, wherein the indication comprises an additional bit in the handover request that is set only for mandatory bearers; determining, at the second eNB, whether all the mandatory bearers required by the application indicated in the handover request can be accepted at the second eNB, wherein the determining comprises examining the additional bit in the handover request at the second eNB; and responding by the second eNB to the first eNB with a handover preparation failure message when all the mandatory bearers required by the application cannot be accepted at the second eNB. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the handover request includes a list of the mandatory bearers required by the application. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein a flag in the handover request is set to indicate that a bearer in the handover request is one of the mandatory bearers required by the application. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the method further comprises identifying the mandatory bearers, wherein the second eNB is configured with another list of bearers with specific QCIs that can be accepted by the second eNB for the application. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein a maintenance entity configures the second eNB with the another list of bearers with specific QCIs that can be accepted by the second eNB for the application.