METHOD FOR REDUCING THE ENERGY CONSUMPTION IN A WIRELESS COMMUNICATION TERMINAL AND COMMUNICATION TERMINAL IMPLEMENTING SAID METHOD

• US 20130128783A1
• Filed: 11/18/2012
• Published: 05/23/2013
• Est. Priority Date: 11/18/2011
• Status: Active Grant

• Current Assignee: Magnolia Licensing LLC (IP Edge LLC)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Perraudeau, Jacques, Le Naour, Jean-Yves, Louzir, Ali, Lo Hine Tong, Dominique, Bernard, Denis
• Granted Patent: US 9,380,527 B2
• Time in Patent Office: Days
• US Class Current: 370/281
• CPC Class Codes: H04W 52/02 Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 52/0274 by switching on or off the equipment or parts thereof
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention relates to a wireless communication terminal able to transmit and/or receive video, audio or data signals in a first and a second frequency band comprising a first MIMO circuit of N paths (N≧1) operating in the first frequency band and a second MIMO circuit of M paths (M≧1) operating in the second frequency band, the first and second MIMO circuits each being coupled to front-end modules comprising respectively N and M power amplifiers, the front-end modules being connected to an antenna system.

Claims

1. Method for reduction of the energy consumption in a wireless communication terminal able to simultaneously transmit and/or receive signals in at least a first and a second frequency bands comprising a first circuit of N paths with N≧

1, operating in the first frequency band and a second circuit of M paths with M≧

1 operating in the second frequency band, the first and second circuits each being coupled to front-end modules comprising respectively N and M power amplifiers, the front-end modules being connected to an antenna system, said method comprising the steps of;

extracting signals transmitted and/or received from control data,

during the emission of a burst in the first frequency band and of a burst in the second frequency band, comparing the transmission instants in order to detect or not a conflict,

if there is no conflict and according to extracted control data, transmitting the signals of one of the first or second frequency bands via a power amplifier of the front-end module of the other frequency band and disconnecting the power amplifier of the front-end module of the frequency band of said signals.

2. Method according to claim 1, wherein the signals of one of the first or second frequency bands pass via a power amplifier of the front-end module of the other frequency band and the power amplifier of the front-end module of the frequency band of said signals is disconnected, if there is no conflict or if the power amplifier has a sufficient bandwidth.

3. Method according to claim 1, wherein the control data are selected from among data on the power transmitted or TPC (Transmit Power Control) and/or data on the quality of services QoS (Quality of Services).

4. Method according to claim 1, wherein the first frequency band is the 5 GHz frequency band and the second frequency band is the 2.4 GHz frequency band.

5. Method according to claim 1, wherein the signals of the 2.4 GHz frequency band are transmitted via at least one of the power amplifiers of the front-end module of the 5 GHz frequency band.

6. Method according to claim 1, wherein the first and second circuits are MIMO circuits.

7. Wireless communication terminal able to transmit and/or receive video, audio or data signals in a first and a second frequency band comprising a first circuit of N paths with N≧

1 operating in the first frequency band and a second circuit of M paths with M≧

1 operating in the second frequency band, the first and second circuits each being coupled to front-end modules comprising respectively N and M power amplifiers, the front-end modules being connected to an antenna system, wherein the terminal comprises;

means for extracting signals emitted and/or received from control data,

means, during the emission of a burst in the first frequency band and of a burst in the second frequency band, to compare the transmission instants in order to detect or not a conflict, and

if there is no conflict and according to extracted control data means for transmitting the signals of one of the first or second frequency bands via a power amplifier of the front-end module of the other frequency band and disconnecting the power amplifier of the front-end module of the frequency band of said signals.

8. Terminal according to claim 7, wherein said means comprise a command circuit connected at input to the first and second MIMO circuits to receive and process the control data, the command circuit output controlling M (if M<

N) or N (if N<

M) switching circuits for which the inputs are connected to one of the M paths of the second MIMO circuit and for which an output is connected to one of the M power amplifiers, the other output being connected to one of the N power amplifiers via a summation circuit for which the other input is connected to one of the N paths of the MIMO circuit.

9. Terminal according to claim 7, wherein at least one of the amplifiers of the front-end module receiving the signals of two frequency bands is a wideband amplifier.