# US 9,521,508 B2 · Architecture and method to 4G-mobile positioning > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,508 B2 - Document ID: US9521508B2 - Status: Granted - Kind: B2 - Application number: 13/921,636 - Filed: 2013-06-19 - Published: 2014-12-25 - Granted: 2016-12-13 - Earliest claimed: 2013-06-19 - Assignees: BlackBerry Limited - Applicants: Blackberry Limited - Inventors: Mohammad Shafiq Bani Hani; Arnold Sheynman; Bruce A. Bernhardt - Web page: https://patentgrep.com/patent/US9521508B2 ## CPC - H04W 4/02: Services making use of location information - H04W 4/029: Location-based management or tracking services - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A mobile device and a method and circuit for determining a position of the mobile device is disclosed. A positioning signal is received at a communication circuit of the mobile device. The received positioning signal is sent from the communication circuit to a position-determining module for determining the position of the mobile device from the positioning signal. A switch may be configured to selectively couple the position-determining module to the communication circuit. ## Claims ### Claim 1 A method of determining a position of a mobile device, the method comprising: receiving a positioning signal at a circuit of the mobile device, wherein the circuit is configured for wireless two-way communication; and sending the received positioning signal from the circuit, prior to a communication modem of the circuit, to a multilateration location and monitoring service (M-LMS) module of the mobile device via a switch that selectively couples the circuit to the M-LMS module to determine the position of the mobile device from the positioning signal. ### Claim 2 (depends on 1) The method of claim 1, wherein the switch selectively couples the circuit to the M-LMS module prior to the communication modem. ### Claim 3 (depends on 2) The method of claim 2, further comprising controlling the switch using a control signal. ### Claim 4 (depends on 1) The method of claim 1, further comprising sending the positioning signal to the M-LMS module directly from an antenna of the circuit. ### Claim 5 (depends on 1) The method of claim 1, further comprising sending the positioning signal to the M-LMS module from a frequency channel at a back end of a switchplexer module receiving the positioning signal from an antenna of the circuit, wherein a frequency band of the frequency channel corresponds to a frequency band of the positioning signal. ### Claim 6 (depends on 1) The method of claim 1, wherein the circuit further includes an antenna that is at least one of a primary antenna and a diversity antenna. ### Claim 7 (depends on 1) The method of claim 1, wherein the positioning signal is a signal within a frequency band from about 902 Megahertz (MHz) to about 928 MHz. ### Claim 8 A circuit for determining a position of a mobile communication device, comprising: a communication circuit including an antenna and a communication modem, wherein the communication circuit is configured for wireless two-way communication; a splitter configured to split a positioning signal received at the antenna prior to the positioning signal being received at the communication modem; a multilateration location and monitoring service (M-LMS) module configured to determine the position of the mobile device using the split positioning signal; and a switch configured to selectively electrically couple the M-LMS module to the communication circuit at the splitter to send the split positioning signal to the M-LMS module. ### Claim 9 (depends on 8) The circuit of claim 8, further comprising a control unit configured to enable the switch to electrically couple the M-LMS module to the communication circuit. ### Claim 10 (depends on 9) The circuit of claim 9, wherein the control unit is further configured to disable the switch and place the M-LMS module in an idle state. ### Claim 11 (depends on 8) The circuit of claim 8, wherein the switch is selectively electrically coupled directly to the antenna. ### Claim 12 (depends on 8) The circuit of claim 8, wherein the switch is selectively electrically coupled to a frequency channel at a back end of a switchplexer module that receives the positioning signals from the antenna, wherein a frequency band of the channel corresponds to a frequency band of the positioning signal. ### Claim 13 (depends on 8) The circuit of claim 8, wherein the antenna further comprises at least one of a primary antenna and a diversity antenna. ### Claim 14 (depends on 8) The circuit of claim 8, wherein the positioning signal is within a frequency band between about 902 Megahertz (MHz) and 928 MHz. ### Claim 15 A mobile communication device, comprising: a circuit including an antenna and a communication modem, wherein the circuit is configured for wireless two-way communication; a splitter configured to split a positioning signal received at the antenna prior to the positioning signal being received at the communication modem; a multilateration location and monitoring service (M-LMS) module configured to determine a position of the mobile device using the split positioning signal; and a switch configured to electrically couple the M-LMS module to the splitter to direct the split positioning signal to the M-LMS module. ### Claim 16 (depends on 15) The mobile communication device of claim 15, further comprising a control unit configured to enable the switch to electrically couple the M-LMS module to the circuit. ### Claim 17 (depends on 16) The mobile communication device of claim 16, wherein the control unit is further configured to disable the switch and place the M-LMS module in an idle state. ### Claim 18 (depends on 15) The mobile communication device of claim 15, wherein the switch is selectively electrically coupled directly to an antenna of the circuit. ### Claim 19 (depends on 15) The mobile communication device of claim 15, wherein the switch is selectively electrically coupled to a frequency channel of a switchplexer module that receives a signal from an antenna of the circuit, wherein a frequency band of the frequency channel corresponds to a frequency band of the positioning signal. ### Claim 20 (depends on 15) The mobile communication device of claim 15, wherein the positioning signal is within a frequency band between about 902 Megahertz (MHz) and 928 MHz. ### Claim 21 (depends on 15) The mobile communication device of claim 15, further comprising a signal amplifier configured to amplify the split positioning signal to compensate for a splitter loss at the splitter.