Method and a device for transferring signalling information in a TDMA based system

A method comprising:

• determining a temporal alignment of values for a retransmission number parameter with a time division multiple access frame structure by checking a mapping between time division multiple access frame numbers and values of the retransmission number parameter, said retransmission number parameter used for encoding data in a radio packet,
• receiving in a number of first time division multiple access frames a first radio packet comprising a transport block of signaling information encoded by utilizing a first retransmission number parameter value obtained on the basis of the temporal alignment value,
• receiving in a number of second time division multiple access frames, said second time division multiple access frames differing from said first time division multiple access frames, at least a second radio packet comprising a transport block of signalling information encoded by utilizing a second retransmission number parameter value obtained on the basis of the temporal alignment value, and
• decoding the received first radio packet by utilizing said first retransmission number parameter value and the received second radio packet by utilizing said second retransmission number parameter value.

An apparatus comprising:

• at least one processor and
• at least one memory comprising a computer program code,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
• determine a temporal alignment of values for a retransmission number parameter with a time division multiple access frame structure by checking a mapping between time division multiple access frame numbers and values of the retransmission number parameter, said retransmission number parameter used for encoding data in a radio packet,
• transmit in a number of first time division multiple access frames a first radio packet comprising a transport block of signaling information encoded by utilizing a first retransmission number parameter value obtained on the basis of the temporal alignment value, and
• transmit in a number of second time division multiple access frames, said second time division multiple access frames differing from said first time division multiple access frames, at least a second radio packet comprising a transport block of signaling information encoded by utilizing a second retransmission number parameter value obtained on the basis of the temporal alignment value.

An apparatus comprising:

• at least one processor and
• at least one memory comprising a computer program code,
• the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following:
• determine a temporal alignment of values for a retransmission number parameter with a time division multiple access frame structure by checking a mapping between time division multiple access frame numbers and values of the retransmission number parameter, said retransmission number parameter used for encoding data in a radio packet,
• receive in a number of first time division multiple access frames a first radio packet comprising a transport block of signaling information encoded by utilizing a first retransmission number parameter value obtained on the basis of the temporal alignment value,
• receive in a number of second time division multiple access frames, said second time division multiple access frames differing from said first TDMA frames, at least a second radio packet comprising a transport block of signaling information encoded by utilizing a second retransmission number parameter value obtained on the basis of the temporal alignment value, and
• decode the received first radio packet by utilizing said first retransmission number parameter value and the received second radio packet by utilizing said second retransmission number parameter value.

A non-transitory computer readable medium comprising a computer executable program configured to execute, when the computer executable program is run in a computer, a method comprising:

• determining a temporal alignment of values for a retransmission number parameter with a time division multiple access frame structure by checking a mapping between time division multiple access frame numbers and values of the retransmission number parameter, said retransmission number parameter used for encoding data in a radio packet,
• receiving in a number of first time division multiple access frames a first radio packet comprising a transport block of signaling information encoded by utilizing a first retransmission number parameter value obtained on the basis of the temporal alignment value,
• receiving in a number of second time division multiple access frames, said second time division multiple access frames differing from said first time division multiple access frames, at least a second radio packet comprising a transport block of signaling information encoded by utilizing a second retransmission number parameter value obtained on the basis of the temporal alignment value, and
• decoding the received first radio packet by utilizing said first retransmission number parameter value and the received second radio packet by utilizing said second retransmission number parameter value.