# US 2018/0027455 A1 · System and method for dynamic feature selection based on latency discovery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0027455 A1 - Document ID: US20180027455A1 - Status: Published application - Kind: A1 - Application number: 15/703,737 - Filed: 2017-09-13 - Published: 2018-01-25 - Earliest claimed: 2016-06-01 - Assignees: AT&T Intellectual Property I, L.P.; AT&T Mobility II LLC - Applicants: At&T Intellectual Property I, L.P.; AT&T Mobility II LLC - Inventors: Hongyan Lei; Ye Chen; Zhi Cui; Cheng P. Liu; Yonghui Tong - Web page: https://patentgrep.com/patent/US20180027455A1 ## CPC - H04W 24/02: Arrangements for optimising operational condition - H04L 5/00: Arrangements affording multiple use of the transmission path - H04W 36/0064: {of control information between different access points} - H04W 36/0088: {Scheduling hand-off measurements} - H04L 5/001: {the frequencies being arranged in component carriers} - H04W 92/20: between access points - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed. ## Claims ### Claim 1 A method, comprising: identifying, by a processing system including a processor, a primary serving cell and a secondary serving cell of a mobile cellular network; obtaining, by the processing system, a comparison between a plurality of latency requirements associated with a plurality of mobile features and a latency value associated with a message exchange, via a messaging interface, between a primary serving cell and a secondary serving cell; and selecting, based on the comparison, by the processing system, a mobile feature of the plurality of mobile features, wherein the mobile feature comprises a coordinated exchange of wireless signals between the primary serving cell and a mobile device and between the secondary serving cell and the mobile device. ### Claim 2 (depends on 1) The method of claim 1, wherein the primary serving cell facilitates one of attachment of a mobile device to a mobile cellular network, re-attachment of the mobile device to the mobile cellular network, or mobility of the mobile device between the primary serving cell and another cell of the mobile cellular network. ### Claim 3 (depends on 1) The method of claim 1, wherein the primary serving cell is associated with a first base station of a mobile cellular network and the secondary serving cell is associated with a second base station of the mobile cellular network. ### Claim 4 (depends on 3) The method of claim 3, wherein the latency value, associated with a message exchange via a messaging interface between the primary serving cell and the secondary serving cell, is determined by exchanging an X2 latency message between the first base station and the second base station using an X2 application protocol of the messaging interface that includes the X2 latency message. ### Claim 5 (depends on 1) The method of claim 1, further comprising determining, by the processing system, a demand for the mobile feature of the plurality of mobile features, wherein selection of the mobile feature is associated with the demand that is determined. ### Claim 6 (depends on 1) The method of claim 1, wherein the plurality of mobile features includes coherent joint radio frequency transmissions from the primary serving cell and the secondary serving cell to the mobile device, an aggregation of radio frequency carriers of the primary serving cell and the secondary serving cell, a dual connectivity between the primary serving cell, the secondary serving cell and the mobile device, or any combination thereof. ### Claim 7 (depends on 6) The method of claim 6, wherein the aggregation of radio frequency carriers comprises a 3rd Generation Partnership Protocol, Long Term Evolution carrier aggregation. ### Claim 8 (depends on 6) The method of claim 6, wherein the dual connectivity comprises a 3rd Generation Partnership Protocol, Long Term Evolution coordinated multipoint transmissions. ### Claim 9 A system, comprising: a processing system including a processor; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations, the operations comprising: obtaining a comparison between a plurality of latency requirements associated with a plurality of mobile features and a latency value associated with a message exchange, via a messaging interface, between a primary serving cell associated with a first base station of a mobile cellular network and a secondary serving cell associated with a second base station of the mobile cellular network; and selecting, based on the comparison, a mobile feature of the plurality of mobile features, wherein the mobile feature comprises a coordinated exchange of wireless signals between the primary serving cell and a mobile device and between the secondary serving cell and the mobile device. ### Claim 10 (depends on 9) The system of claim 9, wherein the operations further comprise identifying the primary serving cell and the secondary serving cell of the mobile cellular network. ### Claim 11 (depends on 9) The system of claim 9, wherein the primary serving cell facilitates one of attachment of a mobile device to a mobile cellular network, re-attachment of the mobile device to the mobile cellular network, or mobility of the mobile device between the primary serving cell and another cell of the mobile cellular network. ### Claim 12 (depends on 9) The system of claim 9, wherein the latency value, associated with a message exchange via a messaging interface between the primary serving cell and the secondary serving cell, is determined by exchanging an X2 latency message between the first base station and the second base station using an X2 application protocol of the messaging interface that includes the X2 latency message. ### Claim 13 (depends on 9) The system of claim 9, wherein the operations further comprise determining a demand for the mobile feature of the plurality of mobile features, wherein selection of the mobile feature is associated with the demand that is determined. ### Claim 14 (depends on 9) The system of claim 9, wherein the plurality of mobile features includes coherent joint radio frequency transmissions from the primary serving cell and the secondary serving cell to the mobile device, an aggregation of radio frequency carriers of the primary serving cell and the secondary serving cell, a dual connectivity between the primary serving cell, the secondary serving cell and the mobile device, or any combination thereof. ### Claim 15 (depends on 14) The system of claim 14, wherein the aggregation of radio frequency carriers comprises a 3rd Generation Partnership Protocol, Long Term Evolution carrier aggregation. ### Claim 16 (depends on 14) The system of claim 14, wherein the dual connectivity comprises a 3rd Generation Partnership Protocol, Long Term Evolution coordinated multipoint transmissions. ### Claim 17 A machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, comprising: accessing, by the processing system, a comparison between a plurality of latency requirements associated with a plurality of mobile features and a latency value associated with a message exchange, via a messaging interface, between a primary serving cell and a secondary serving cell; and determining, based on the comparison, by the processing system, a mobile feature of the plurality of mobile features, wherein the mobile feature comprises a coordinated exchange of wireless signals between the primary serving cell and a mobile device and between the secondary serving cell and the mobile device. ### Claim 18 (depends on 17) The machine-readable storage medium of claim 17, wherein the mobile feature of the plurality of mobile features is determined according to a demand for the mobile feature. ### Claim 19 (depends on 17) The machine-readable storage medium of claim 17, wherein the latency value, associated with a message exchange via a messaging interface between the primary serving cell and the secondary serving cell, is determined by exchanging an X2 latency message between a first base station and a second base station using an X2 application protocol of the messaging interface that includes the X2 latency message. ### Claim 20 (depends on 17) The machine-readable storage medium of claim 17, wherein the latency value comprises a time delay.