Radio Communication Equipment and Method Used in Said Equipment

• US 20070281628A1
• Filed: 07/08/2005
• Published: 12/06/2007
• Est. Priority Date: 07/08/2004
• Status: Active Grant

• Current Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications AB (Sony Group Corp.)
• Inventors: Glatz, Andreas
• Granted Patent: US 7,672,688 B2
• Time in Patent Office: Days
• US Class Current: 455/74
• CPC Class Codes: H04B 1/006 using switches for selecting the desired band H04B1/0057 takes precedence
• CPC Class Codes: 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

Abstract

The present invention relates to a radio communication equipment comprising a first antenna 1, a first RF unit 2 for wireless communication, the first RF unit 2 being connectable to said first antenna 1, wherein a first frequency band is used by said first RF unit 2 for reception of a signal via said first antenna 1 and a second frequency band is used by said first RF unit 2 for transmission of a signal via said first antenna 1, said first and second frequency bands being used alternatively by said first RF unit 2 and a second RI, unit 3 for wireless communication, the second RF unit 3 being connectable to said first antenna 1, wherein a third frequency band is used by said second RF unit 3 for reception of a signal and a fourth frequency band 3T is used by said second RF unit 3 for transmission of a signal, said third and fourth frequency bands being used simultaneously by said second RF unit 3. According to the present invention the radio communication equipment 0 further comprises a second antenna 4, wherein said second RF unit 3 is simultaneously connectable to both the first antenna 1 and the second antenna 4 and reception of a signal is performed by said second RF unit 3 via either the first or second antenna 1, 4 and transmission of a signal is performed by said second RF unit via the other antenna 1, 4.

Claims

1. A radio communication equipment comprising

a first antenna;

a first RF unit for wireless communication, the first RF unit being connectable to said first antenna, wherein a first frequency band is used by said first RF unit for reception of a signal via said first antenna and a second frequency band is used by said first RF unit for transmission of a signal via said first antenna, said first and second frequency bands being used alternatively by said first RF unit; and

a second RF unit for wireless communication, the second RF unit being connectable to said first antenna, wherein a third frequency band is used by said second RF unit for reception of a signal and a fourth frequency band is used by said second RF unit for transmission of a signal, said third and fourth frequency bands being used simultaneously by said second RF unit;

wherein the radio communication equipment further comprises a second antenna,

wherein said second RF unit is simultaneously connectable to both the first antenna and the second antenna and reception of a signal is performed by said second RF unit via either the first or second antenna and transmission of a signal is performed by said second RF unit via the other antenna.

2. A radio communication equipment according to claim 1, wherein the radio communication equipment further comprises

switch for connecting the first antenna to a first receiver of said first RF unit or to a first transmitter of said first RF unit or to a second receiver of said second RF unit or to a second transmitter of said second RF unit respectively,

wherein said second receiver of said second RF unit simultaneously is connected to said second antenna if said first antenna is connected by said switch to said second transmitter of said second RF unit and said second transmitter of said second RF unit simultaneously is connected to said second antenna if said first antenna is connected by said switch to said second receiver of said second RF unit.

3. A radio communication equipment according to claim 2, wherein said second receiver of said second RF unit permanently is connected to said second antenna and said second transmitter of said second RF unity selectively is connectable to said first antenna by said switch.

4. A radio communication equipment according to claim 2, wherein said first receiver of said first RF unit is adapted to use at least two different first frequency bands for reception of a signal via said first antenna;

and said first transmitter of said first RF unit is adapted to use at least two different second frequency bands for transmission of a signal via said first antennas.

5. A radio communication equipment according to claim 1, wherein the first frequency band used by said first RF unit for reception of a signal is between 1930-1990 MHz and the second frequency band used by said first RF unit for transmission of a signal is between 1850-1910 MHz or the first frequency band used by said first RF unit for reception of a signal is between 1805-1880 MHz and the second frequency band used by said first RF unit for transmission of a signal is between 1710-1785 MHz.

6. A radio communication equipment according to claim 1, wherein the third frequency band used by said second RF unit for reception of a signal is between 2110-2170 MHz and the fourth frequency band used by said second RF unit for transmission of a signal is between 1920-1980 MHz.

7. A radio communication equipment according to claim 1, wherein the portable radio communication equipment further comprises a third RF unit for wireless communication, the third RF unit being connectable to said first antenna, wherein a fifth frequency band is used by said third RF unit for reception of a signal via said first antenna and a sixth frequency band is used by said third RF unit for transmission of a signal via said first antenna, said fifth and sixth frequency bands being used alternatively by said third RF unit.

8. A radio communication equipment according to claim 7, wherein the radio communication equipment further comprises a band-pass filters connected to said first antenna, wherein said band-pass filter automatically transmits a signal belonging to a predefined frequency range (LB) to said third RF unit and automatically transmits a signal belonging to a frequency range (HB) of a frequency higher than said predefined frequency range (LB) to said first and second RF units via said switch, respectively.

9. A radio communication equipment according to claim 7, wherein the third RF unit is adapted to use at least two different fifth frequency bands for reception of a signal via said first antenna;

and the third RF unit is adapted to use at least two different sixth frequency bands for transmission of a signal via said first antenna.

10. A radio communication equipment according to claim 7, wherein the fifth frequency band used by said third RF unit for reception of a signal is between 869-894 MHz and the sixth frequency band used by said third RF unit for transmission of a signal is between 824-849 MHz or the fifth frequency band used by said third RF unit for reception of a signal is between 925-960 MHz and the sixth frequency band used by said third RF unit for transmission of a signal is between 880-915 MHz.

11. A radio communication equipment according to claim 1, wherein the radio communication equipment further comprises a first connector to connect a first external antenna to the radio communication equipment said first external antenna being adapted to replace said first antenna.

12. A radio communication equipment according to claim 1, wherein the radio communication equipment further comprises a second connector to connect a second external antenna to the radio communication equipment, said second external antenna being adapted to replace said second antenna.

13. A radio communication equipment according to claim 1, wherein the first RF unit and/or the third RF unit is controlled according to the GSM global system for mobile communication standard and/or the DCS digital communication system standard;

and the second RF unit is controlled according to the WCDMA wideband code-division multiple-access standard.

14. A radio communication equipment according to claim 1, wherein the radio communication equipment is a portable equipment.

15. A radio communication equipment according to claim 1, wherein the radio communication equipment is a mobile phone.

16. Method of controlling a radio communication equipment,

the radio communication equipment comprising

a first antenna;

a first RF unit for wireless communication;

a second RF unit for wireless communication; and

a second antenna;

the method comprising the following steps;

(S1) Identifying a communication standard selected by a user of said radio communication equipment or received via said first antenna or via said second antenna, respectively;

(S2) Connecting said first RF unit to said first antenna and using a first frequency band for reception of a signal via said first antenna and a second frequency band for transmission of a signal via said first antenna wherein said first and second frequency bands are used alternatively by said first RF unit if a first communication standard is identified; and

(S3) Connecting said second RF unit to said second antenna and using a third frequency band for receipt of a signal via said second antenna and connecting said second RF unit to said first antenna and using a fourth frequency band for transmission of a signal via said first antenna wherein said third and fourth frequency bands are used simultaneously by said second RF unit if a second communication standard is identified.

17. A computer program product directly loadable into the internal memory of a radio communication equipment, comprising software code portions for performing the steps of claim 16 when said product is run on a microprocessor of said radio communication equipment.