Method for transporting real-time data on a radio packet communication network

2\ Method according to claim 1, in that said real-time data frames are compressed voice or video frames (12) generated by a voice or video codec (11), said compressed voice frames or compressed video frames comprising at least two bit portions (class A, class B, class C), a first bit portion (class A) comprising bits having a relevance higher than a predefined relevance threshold and a second bit portion (class B, class C) comprising bits having a relevance lower than said predefined relevance threshold.

3\ Method according to claim 1, further comprising the step of appending a checksum (CRC) to said first bit portion (class A) before submitting it to said first modulation and coding scheme (M1, C1).

4\ Method according to claim 1, further comprising the step of multiplexing bit portions belonging to at least two real-time data frames before submitting them to said modulation and coding scheme (M1, C1, M2, C2).

5\ Method according to claim 1, further comprising the steps of agreeing at said transmitter (50) and at said receiver (60) upon

• the format of said real-time data frames;
• said first and second modulation and coding schemes (M1, C1, M2, C2) used for the different bit portions of said real-time data frame.

6\ Method according to claim 5, further comprising the step of updating said first and second modulation and coding schemes (M1, C1, M2, C2) according to the current radio link quality.

7\ Method according to claim 1 used in an Enhanced Data rate for GSM Evolution EDGE network, said first and second modulation and coding schemes being chosen in the group of modulation and coding schemes defined in EDGE specification.

9\ Receiver (60) adapted to be used for the reception of real-time data transmitted on a radio packet communication network according to the method of claim 1, said receiver (60) comprising:

• a module (61) for demodulating and decoding at least two types of radio packet transmission units (RB1, RB2) received at said receiver (60) by using at least two different predefined demodulation and decoding schemes (M1, C1, M2, C2);
• a module (63) for combining in a data entity herein called, reconstituted real-time frame, a first predefined part of a radio packet transmission unit of a first type with a second predefined part of a radio packet transmission units of a second type;
• a codec (64) for decoding said reconstituted real-time data frame.