# US 12,003,265 B1 · System of on-body mobile devices and methods of operation with a femtocell

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- Number: US 12,003,265 B1
- Document ID: US12003265B1
- Status: Granted
- Kind: B1
- Application number: 16/588,995
- Filed: 2019-09-30
- Granted: 2024-06-04
- Earliest claimed: 2011-01-13
- Applicants: Eric James Malinen
- Inventors: Eric James Malinen
- Web page: https://patentgrep.com/patent/US12003265B1

## CPC

- H04B 1/3838: {Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use}
- H04B 1/40: Circuits
- H04B 17/23: Indication means, e.g. displays, alarms, audible means
- H04W 52/0261: {managing power supply demand, e.g. depending on battery level}
- H04W 52/0277: {according to available power supply, e.g. switching off when a low battery condition is detected}
- H04W 52/029: {reducing the clock frequency of the controller}
- H04W 52/288: {taking into account the usage mode, e.g. hands-free, data transmission or telephone}
- Y02D 30/70: in wireless communication networks
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

A system of mobile devices that reduces the transmission strength of outgoing signals originating from a handheld device, and sends such signals to a second device. The second device communicates with the first device using low-power, short-range RF communication signals, and then generates and transmits high-power, long-range RF communication signals through a cellular tower to a remote recipient. When the first and second devices encounter a femtocell, the first device automatically switches directly to the femtocell, and the second device is either shut off or switched to a stand-by mode. The intelligence and power of the devices may be split between two or more devices, resulting in longer use time, deeper and more complex computing capability, and fewer disruptions due to power.

## Claims

### Claim 1

A method of using two discrete mobile devices to switch between communicating through a cellular long-range communications tower and communicating through a local femtocell existing within a shielded enclosure, comprising the steps of:
locating a first one of said two discrete mobile devices adjacent a portion of the body of the user;
transmitting from said first one of said two discrete mobile devices through first high-power, long-range RF communication signals through said cellular long-range communications tower to a remote recipient;
detecting presence within said shielded enclosure of both of said first one of said two discrete mobile devices and a second one of said two discrete mobile devices; and
switching said first one of said two discrete mobile devices from said communicating through said first high-power, long-range RF communication signals to communicating with said remote recipient through said femtocell existing within a shielded enclosure, said switching step only occurring responsive and subsequent to said detecting step.

### Claim 2 (depends on 1)

The method of using two discrete mobile devices to switch between communicating through a cellular long-range communications tower and communicating through a local femtocell existing within a shielded enclosure of claim 1, further comprising the steps of:
communicating low-power, short-range RF communication signals between said first one of said two discrete mobile devices and said second one of said two discrete mobile devices; and
generating first high-power, long-range RF communication signals at said second one of said two discrete mobile devices from said low-power, short-range RF communication signals prior to said detecting step.

### Claim 3 (depends on 2)

The method of using two discrete mobile devices to switch between communicating through a cellular long-range communications tower and communicating through a local femtocell existing within a shielded enclosure of claim 2, wherein said switching step further comprises switching said first one of said two discrete mobile devices from said communicating low-power, short-range RF communication signals between said first one of said two discrete mobile devices and said second one of said two discrete mobile devices to said first one of said two discrete mobile devices communicating with said remote recipient directly through said local femtocell existing within a shielded enclosure.

### Claim 4 (depends on 3)

The method of using two discrete mobile devices to switch between communicating through a cellular long-range communications tower and communicating through a local femtocell existing within a shielded enclosure of claim 3, further comprising the step of shutting off said second one of said two discrete mobile devices responsive to said switching step.

### Claim 5 (depends on 3)

The method of using two discrete mobile devices to switch between communicating through a cellular long-range communications tower and communicating through a local femtocell existing within a shielded enclosure of claim 3, further comprising the step of operating said second one of said two discrete mobile devices in a standby mode responsive to said switching step.