Patent ID: 8296436

Claim:
A method comprising: receiving, at a receiver, a backoff mode attribute and a repair threshold attribute, wherein said backoff mode attribute specifies a backoff mode that provides information on when a receiver that did not correctly receive data sent to a plurality of receivers in a transmission session can start a request for a repair session, wherein said repair threshold attribute specifies an error threshold related to a reception quality of said data received in said transmission session, wherein a plurality of backoff modes and a plurality of error thresholds is used for said transmission session, and wherein at least one of said error thresholds is linked to at least one of said backoff modes, respectively, determining whether said receiver correctly received said data sent in said transmission session; and in response to determining that case said receiver did not correctly receive said data sent in said transmission session: determining an error threshold for said receiver, determining the backoff mode linked to the determined error threshold, requesting a repair session according to the determined backoff mode, wherein in said repair session, at least a part of said data sent to said plurality of receivers in said transmission session being sent at least to said receiver, and receiving data in said repair session.