# US 11,910,259 B2 · System, method, and computer-readable medium for concurrent termination of multiple calls at a mobile terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,910,259 B2 - Document ID: US11910259B2 - Status: Granted - Kind: B2 - Application number: 17/968,743 - Filed: 2022-10-18 - Published: 2023-02-09 - Granted: 2024-02-20 - Earliest claimed: 2007-05-22 - Assignees: Tango Networks, Inc. - Applicants: Tango Networks, Inc. - Inventors: Andrew Silver; Douglas J. Bartek - Web page: https://patentgrep.com/patent/US11910259B2 ## CPC - H04M 3/42238: {in systems with telephone lines with multiple users} - H04W 36/24: Reselection being triggered by specific parameters - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 76/15: Setup of multiple wireless link connections - H04W 36/00692: {using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035)} - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - 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, method and computer-readable medium for allocating multiple subscriptions to a single mobile terminal thereby allowing concurrent termination of multiple calls at the mobile terminal are provided. A mobile terminal adapted to terminate multiple concurrent calls is described. In one implementation, a network need not have any configuration data regarding the multi-line capabilities of the mobile terminal. In other implementations, network-centric mechanisms are provided for allowing multiple concurrent calls to be terminated by a mobile terminal. Multiple concurrent calls may be terminated at a mobile terminal on separate carrier frequencies or alternatively may be terminated on a common carrier frequency. ## Claims ### Claim 1 A method, comprising: receiving a second call at a mobile terminal while the mobile terminal is engaged in a first call in-progress on a first carrier frequency; identifying that a second carrier frequency is both not a harmonic of the first carrier frequency and that the second carrier frequency has a greatest frequency separation from the first carrier frequency of any available frequency; identifying an available time slot on the second carrier frequency to accommodate a third call in-progress on the first carrier frequency and which is not part of the first and second calls on the mobile terminal; and establishing the second call with the mobile terminal in a time slot of the first carrier frequency. ### Claim 2 (depends on 1) The method of claim 1, comprising: receiving a call request directed to the mobile terminal. ### Claim 3 (depends on 1) The method of claim 1, comprising: identifying the second carrier frequency as a different carrier frequency that has more time slots available than the first carrier frequency allocated to the first call. ### Claim 4 (depends on 1) The method of claim 1, comprising: performing a handover of the third call in-progress to the available time slot on the second carrier frequency. ### Claim 5 (depends on 1) The method of claim 1, wherein the time slot of the first carrier frequency was previously occupied by the third call in-progress. ### Claim 6 (depends on 1) The method of claim 1, wherein the second call is established while the first call is maintained in-progress on the first carrier frequency. ### Claim 7 A non-transitory computer-readable storage medium comprising instructions that when executed by a processor cause the processor to: receive a second call at a mobile terminal while the mobile terminal is engaged in a first call in-progress on a first carrier frequency; identify that a second carrier frequency is not a harmonic of the first carrier frequency and that the second carrier frequency has a greatest frequency separation from the first carrier frequency of any available frequency; identify an available time slot on the second carrier frequency to accommodate a third call in-progress on the first carrier frequency, and which is not part of the first and second calls on the mobile terminal; and establish the second call with the mobile terminal in a time slot of the first carrier frequency. ### Claim 8 (depends on 7) The non-transitory computer-readable storage medium of claim 7, wherein the comprising instructions further cause the processor to: receive a call request directed to the mobile terminal. ### Claim 9 (depends on 7) The non-transitory computer-readable storage medium of claim 7, wherein the instructions further cause the processor to: identify the second carrier frequency as a different carrier frequency that has more time slots available than the first carrier frequency allocated to the first call. ### Claim 10 (depends on 7) The non-transitory computer-readable storage medium of claim 7, wherein the instructions further cause the processor to: perform a handover of the third call in-progress to the available time slot on the second carrier frequency. ### Claim 11 (depends on 7) The non-transitory computer-readable storage medium of claim 7, wherein the time slot of the first carrier frequency was previously occupied by the third call in-progress. ### Claim 12 (depends on 7) The non-transitory computer-readable storage medium of claim 7, wherein the second call is established while the first call is maintained in-progress on the first carrier frequency. ### Claim 13 A system, comprising: a first antenna; a first transceiver coupled to the first antenna; and a processing system; wherein a first call is received on a channel of a first carrier frequency over the first antenna and the first transceiver; wherein the processing system executes instructions that cause the processing system to: receive a second call at the mobile terminal while the mobile terminal is engaged in the first call in-progress on the first carrier frequency; identify that a second carrier frequency is not a harmonic of the first carrier frequency and that the second carrier frequency has a greatest frequency separation from the first carrier frequency of any available frequency; identify an available time slot on the second carrier frequency to accommodate a third call in-progress on the first carrier frequency and which is not part of the first and second calls on the mobile terminal; and establish the second call with the mobile terminal in a time slot of the first carrier frequency. ### Claim 14 (depends on 13) The system of claim 13, further comprising: a first subscriber identity module associated with a first cellular service subscription; and a second subscriber identity module associated with a second cellular service subscription. ### Claim 15 (depends on 13) The system of claim 13, wherein the processing system is further configured to: provide mid-call services for the second call and wherein the mid-call services comprise at least one of a call forwarding service, a call waiting service and a call conferencing service. ### Claim 16 (depends on 13) The system of claim 13, wherein the processing system is further configured to: detect a call request of the second call while the first call is in progress, prohibits a ringing signal from being output by the mobile terminal and outputs an indication of a second call request. ### Claim 17 (depends on 13) The system of claim 13, wherein the processing system is further configured to: receive an indication that the second call is accepted and notifies a carrier network from which the second call is inbound to the mobile terminal that the second call is accepted. ### Claim 18 (depends on 13) The system of claim 13, wherein content of the second call is bridged with content of the first call and output at the mobile terminal. ### Claim 19 (depends on 13) The system of claim 13, further comprising: a microphone that receives audio input at the mobile terminal, wherein the audio input is transmitted on an uplink of at least one of the first channel and an uplink of a second channel. ### Claim 20 (depends on 13) The system of claim 13, wherein the second call is established with at least one of: a call forwarding destination number in response to receipt of the first call, and wherein content of the first channel is bridged to a second channel; and a call transfer destination number in response to a user supply of a call transfer command.