METHOD FOR TRANSMITTING DATA IN A RADIO NETWORK, A RADIO NETWORK AND A RECEIVER

• US 20100008239A1
• Filed: 05/04/2007
• Published: 01/14/2010
• Est. Priority Date: 05/05/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: BenQ Mobile GMBH & Company (Qisda Corporation)
• Inventors: Obermanns, Sebastian
• Granted Patent: US 8,208,417 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04W 52/0238 where the received signal is an unwanted signal, e.g. interference or idle signal
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention relates to a method for transmitting data in a transmission interval (201) using a plurality of time slots (202) and a plurality of transmission channels (203) to a receiver (104A) of a radio network (100) comprising a transmitter (103) and at least one additional receiver (104B). The method according to the invention comprises the following steps: transmitting at least one data packet (204) having an embedded identification key (105) by the transmitter (103) via at least one transmission channel (203) in a time slot (202A) of the transmission interval (201), monitoring the at least one transmission channel (203) by means of the receiver (104A) for data packets (204) transmitted in the time slot (202A), said data packets having embedded identifiers (105) that are assigned to the receiver (104A), and switching the receiver (104A) to an idle state until the end of the transmission interval (201) if the receiver (104A) has received no data packet (204) with the embedded identifier (105A) assigned to the receiver (104A) during the time slot (202). The invention also relates to a radio network (100) and to a receiver (104) that are suitable for carrying out the method.

Claims

1. A method for transmitting data in a transmission interval having a plurality of time slots and a plurality of transmission channels to a receiver of a radio network comprising a transmitter and at least one additional receiver, comprising:

transmitting at least one data packet having an embedded identifier by the transmitter via at least one transmission channel in a time slot of the transmission interval;

monitoring the at least one transmission channel by the receiver for data packets transmitted in the time slot, the data packets having embedded identifiers that are assigned to the receiver; and

switching the receiver to an idle state until the end of the transmission interval, if the receiver has received no data packet with an embedded identifier assigned to the receiver during the time slot.

2. The method as claimed in claim 1, wherein the method for a subsequent time slot of the transmission interval are repeated until the receiver has received a data packet including identifiers assigned to the receiver embedded therein in a previous time slot.

3. The method as claimed in claim 1, further comprising:

determining channel properties of the at least one transmission channel in a measuring phase.

4. The method as claimed in claim 3, wherein determining channel properties comprises:

transmitting a predetermined measuring signal from the transmitter to the receiver,

determining the reception quality of the measuring signal by the receiver, and

transmitting at least one value on the basis of the determined reception quality, which allows a statement with regard to the channel properties to be made, from the receiver to the transmitter.

5. The method as claimed in claim 3, comprising:

determining a transmission schedule for the transmission interval based on the channel properties of the at least one transmission channel, which were determined in the measuring phase.

6. The method as claimed in claim 5, wherein during the determination of the transmission schedule, predetermined requirements with regard to data rates, real time conditions or connection qualities of the receiver are taken into account.

7. A mobile radio network including a plurality of transmission channels which are subdivided into a plurality of time slots, comprising:

a transmitter for transmitting data packets, the transmitter being set up to determine a plurality of data packets on the plurality of transmission channels; and

a plurality of receivers for receiving data packets directed to them, with the receiver being set up to monitor the plurality of transmission channels all at the same time,

wherein

in a first time slot of the transmission interval, the plurality of data packets are transmitted to receivers of a selected group of the plurality of receivers, and

in subsequent time slots of the transmission interval, the plurality of data packets are transmitted to the receivers of the selected group and other receivers of the plurality of receivers are switched to an idle state during the remaining time slots.

8. The radio network as claimed in claim 7, wherein the radio network is an Orthogonal Frequency Division Multiplexing radio network.

9. A receiver for use in a radio network including a plurality of transmission channels which are subdivided into a plurality of time slots, comprising a transmitter for transmitting data packets, the transmitter being set up to determine a plurality of data packets on the plurality of transmission channels;

and a plurality of receivers for receiving data packets directed to them, with the receiver being set up to monitor the plurality of transmission channels at the same time, wherein in a first time slot of the transmission interval, the plurality of data packets are transmitted to receivers of a selected group of the plurality of receivers, and in subsequent time slots of the transmission interval, the plurality of data packets are transmitted to the receivers of the selected group and other receivers of the plurality of receivers are switched to an idle state during the remaining time slots,

wherein the receiver has a high frequency reception part and a signal processing part, and during the idle state at least the signal processing part is switched into a state of slumber.

10. The receiver as claimed in claim 9, wherein the receiver has a transmission part for transmitting data to the transmitter and the receiver is set up to transmit channel-specific reception properties including at least transfer rates or signal-to-noise ratios via the transmission part back to the transmitter.