Radio communication terminal broadcasting et reception method and broadcasting system

• US 20050085182A1
• Filed: 12/05/2002
• Published: 04/21/2005
• Est. Priority Date: 02/19/2002
• Status: Active Grant

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Gallet, Thibault, Deprey, Dominique, Francon, Michel-Guy, Nussli, Christophe, Chuberre, Nicolas, Martin, Beatrice, Romann, Brigitte
• Granted Patent: US 8,615,271 B2
• Time in Patent Office: Days
• US Class Current: 455/3.10
• CPC Class Codes: H04B 1/1615 Switching on; Switching off, e.g. remotely battery saving circuits associated with selective call operation H04W52/00; details of power consumption reduction in a PLL, H03L7/0802, H03L7/14, H03L2207/08, H03L2207/18; muting amplifiers by gain control see H03G3/34
• CPC Class Codes: H04B 1/3805 with built-in auxiliary receivers
• CPC Class Codes: H04B 1/406 with more than one transmission mode, e.g. analog and digital modes
• CPC Class Codes: H04W 52/0241 where no transmission is received, e.g. out of range of the transmitter
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention concerns a radio communication terminal, comprising first means for transmitting/receiving RF signals to communicate in a cellular radio communication network, said first means being in standby mode when no communication is set up in the cellular network with another terminal or with the network itself. The invention is characterized in that the terminal comprises second means for receiving at least one carrier dedicated to collective data of multimedia contents, said second means being activated only when the first means are n standby mode. The invention also concerns a method for broadcasting and receiving collective data, as well as a system for broadcasting multimedia contents.

Claims

1. Mobile radio terminal comprising first means (A) for transmitting/receiving radio frequency signals adapted to transmit/receive on paired data/voice carriers to communicate in a cellular mobile radio network (GSM, UMTS), said first means being in a standby mode when no call is set up via the cellular network with another terminal or with the network itself,

characterized in that it comprises second means (B) for receiving at least one downlink carrier dedicated to the broadcasting of multimedia content collective information, said second means being activated only when the first means are in the standby mode.

2. Terminal according to claim 1, characterized in that the second means (B) for receiving radio frequency signals are adapted to receive a W-CDMA UTRA FDD downlink carrier that is not necessarily paired to a W-CDMA UTRA FDD uplink carrier.

3. Terminal according to claim 1, characterized in that the second receiving means (B) are coupled to second transmission means adapted to transmit/receive alternately at least one paired uplink and downlink W-CDMA UTRA FDD carrier, said second transmit/receive means having the role of said first transmit/receive means, which is that of transmitting/receiving data/voice.

4. Terminal according to claim 1, characterized in that the parameters, including the clocks, the PDCP/BMC, RRC, RLC, MAC and PHY layers used by the cellular voice communication network (GSM, UMTS) and the system for broadcasting multimedia contents are divided in a memory system (19) of the terminal, thus providing the clocks and the configurations associated with each of the carriers of said cellular network (GSM, UMTS) and the system for broadcasting multimedia contents to the terminal.

5. Terminal according to claim 1, characterized in that it comprises switching means (7) for activating second means for receiving the multimedia content information carrier after the first transmit/receive means are placed on standby.

6. Terminal according to claim 1, characterized in that priority is assigned to calls in the cellular network and the switching means are adapted to switch the first transmit/receive means to an active state when a call arises in said network.

7. Terminal according to claim 5, characterized in that control means (4) of the terminal are adapted to control at regular time intervals the content of messages transmitted by said cellular network and said switching means are adapted to activate the first transmit/receive means and the second transmit/receive means, respectively, as a function of instructions (Sc) from the control means.

8. Terminal according to claim 1, characterized in that it comprises storage means (17) for storing the stream of collective information of received multimedia contents.

9. Terminal according to claim 1, characterized in that at least some of the circuitry (5, 8, 11, 13, 15) of the first transmit/receive means is common to a portion of the circuitry (6, 9, 12, 14, 16) of the second receive means.

10. Terminal according to claim 1, characterized in that the first transmit/receive means are adapted to operate in frequency bands reserved for the GSM and/or UMTS system and the second receive means are adapted to operate in frequency bands reserved for IMT 2000 high bit rate transmissions.

11. Terminal according to claim 1, characterized in that the carrier dedicated to multimedia content collective information is transmitted by a satellite (18) of a collective information transmission system comprising at least one satellite segment and terrestrial repeaters (24) and in that the frequency bands used are preferably the IMT 2000 bands reserved for satellite mobile systems.

12. Terminal according to claim 1, characterized in that the carrier dedicated to collective information is transmitted by a terrestrial repeater (24) of a collective information broadcasting system and in that the frequency bands used are the IMT 2000 bands.

13. Method of broadcasting multimedia content collective information by a collective information transmission system, comprising a step of wide broadcasting transmission to a plurality of terminals (20) according to claim 1, characterized in that said method reiterates the transmission of the collective information in data packets with coding redundancy enabling the required monitoring by the terminal of messages on the cellular network.

14. Method of receiving collective information by a mobile radio terminal (20) comprising first radio frequency signal transmit/receive means for communicating in a cellular mobile radio network, said first means being in a standby mode when no call is set up via the cellular network with another terminal or with the network itself,

characterized in that said method comprises:

a step of detecting the standby mode of the first transmit/receive means, and

a step of activating reception of a carrier dedicated to multimedia content collective information when the standby mode is detected.

15. System for broadcasting multimedia content to at least one terminal (20), characterized in that it comprises:

a service center (BM-SC) for grouping and multiplexing multimedia contents received from a plurality of sources (25, 25′

),

a multimedia content concentrator (21) adapted to receive information transmitted by said service center and comprising transmit means (HTTR Tx 28) for transmitting a multimedia content carrier, and

a retransmission satellite adapted to receive the latter carrier to convert it to a second carrier in the direction of at least one terrestrial repeater (24),

said terrestrial repeater comprising means (30) for receiving said second multimedia content carrier and means (34) for extracting said multimedia content information from said second carrier to forward it on a third carrier adapted to be received by the terminal.

16. System according to claim 15, characterized in that the concentrator comprises second means (29) for transmitting said multimedia content information on a fourth carrier to the satellite (18) which is adapted to convert from the fourth carrier to the third carrier that the terminal is adapted to receive directly.

17. System according to claim 16, characterized in that the CDMA signals modulated onto the third carrier transmitted by the satellite and by the terrestrial repeaters are received by the terminal in a time window enabling their coherent combination.