# US 10,320,470 B2 · Terminal using frequency band of mobile satellite service for LTE/LTE-A

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- Number: US 10,320,470 B2
- Document ID: US10320470B2
- Status: Granted
- Kind: B2
- Application number: 15/510,828
- Filed: 2015-08-11
- Published: 2017-10-26
- Granted: 2019-06-11
- Earliest claimed: 2014-09-27
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Suhwan Lim; Yoonoh Yang; Sangwook Lee; Manyoung Jung; Jinyup Hwang
- Web page: https://patentgrep.com/patent/US10320470B2

## CPC

- H04B 7/1853: {Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service (for selecting H04W)}
- H04B 1/48: in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)}
- H04B 1/52: Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/14: Two-way operation using the same type of signal, i.e. duplex
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

A disclosure of the present specification provides a terminal which uses a frequency band of a mobile satellite service for LTE/LTE-A. The terminal comprises: a first duplexer for separating a transmitted signal and a received signal in band 1 defined in long term evolution (LTE)/LTE-Advanced; a second duplexer for separating a transmitted signal and a received signal in new band 65 which was a mobile satellite service (MSS) band and now is allocated for the terrestrial service; and a selection switch for selecting one of the first duplexer and the second duplexer. Herein, when only band 1 is configured and used, only the first duplexer may be operated by the selection switch. In contrast, when new band 65 is configured and used, wherein the configured band does not overlap the range of band 1, and when new band 65 is configured and used, wherein the configured band overlaps the range of band 1 for carrier aggregation, only the second duplexer may be operated by the selection switch.

## Claims

### Claim 1

A terminal, comprising:
a first duplexer for separating a transmission signal and a reception signal in a band 1 defined in long term evolution (LTE)/LTE-Advanced;
a second duplexer for separating a transmission signal and a reception signal in a new band 65 which has belonged to a mobile satellite service (MSS) band and which has been allocated for a terrestrial wave; and
a selection switch for selecting any one of the first duplexer and the second duplexer,
wherein if only the band 1 is configured and used, the selection switch selects the first duplexer for using the band 1, and if the new band 65 is configured and used, but the configured band does not overlap a range of the band 1, the selection switch selects the second duplexer for using the new band 65, and
wherein if the new band 65 is configured and used, but the configured band overlaps the range of the band 1, the selection switch selects the second duplexer for using the new band 65, and the second duplexer supports only a bandwidth of 70 MHz for the new band 65.

### Claim 2 (depends on 1)

The terminal of claim 1, further comprising:
a high band switch which is connected to the first duplexer and the second duplexer;
a diplexer which is connected to the high band switch and composes and separates carriers; and
an antenna which is connected to the diplexer.

### Claim 3 (depends on 2)

The terminal of claim 2, wherein:
if the transmission signal belongs to the band 1, the transmission signal is transmitted through the high band switch, the diplexer, and the antenna via the first duplexer driven by the selection switch, and
if the transmission signal belongs to the new band 65, the transmission signal is transmitted through the high band switch, the diplexer, and the antenna via the second duplexer driven by the selection switch.

### Claim 4 (depends on 1)

The terminal of claim 1, wherein the band 1 comprises a transmission band of 1920 MHz to 1980 MHz and a reception band of 2110 MHz to 2170 MHz.

### Claim 5 (depends on 1)

The terminal of claim 1, wherein the new band 65 comprises a transmission band of 1920 MHz to 2010 MHz and a reception band of 2110 MHz to 2200 MHz.