A method of an apparatus for wireless communication, comprising: forming a peer-to-peer communication link with a second apparatus; determining whether to transmit in an assigned resource for securing a transmit priority for transfer of data from the apparatus to the second apparatus in the link based on a quality of service estimation, wherein the assigned resource is a Txp-block on which an intent to act as a transmitter in an associated data segment is indicated by a node having transmit priority through transmitting on said assigned resource, and an intent to act as a receiver is indicated through not transmitting on said assigned resource; transmitting to the second apparatus in the assigned resource based on the determination, wherein said quality of service estimation is obtained by: obtaining a first quality of service requirement for the apparatus; receiving a second quality of service requirement from the second apparatus while forming the peer-to-peer communication link, the second quality of service requirement being for the second apparatus; determining whether the first quality of service requirement is satisfied for the apparatus; and estimating whether the second quality of service requirement is satisfied for the second apparatus, wherein the quality of service estimation is based on a comparison of the satisfaction of the first quality of service requirement by the apparatus and the satisfaction of the second quality of service requirement by the second apparatus. forming a peer-to-peer communication link with a second apparatus; determining whether to transmit in an assigned resource for securing a transmit priority for transfer of data from the apparatus to the second apparatus in the link based on a quality of service estimation, wherein the assigned resource is a Txp-block on which an intent to act as a transmitter in an associated data segment is indicated by a node having transmit priority through transmitting on said assigned resource, and an intent to act as a receiver is indicated through not transmitting on said assigned resource; transmitting to the second apparatus in the assigned resource based on the determination, wherein said quality of service estimation is obtained by: obtaining a first quality of service requirement for the apparatus; receiving a second quality of service requirement from the second apparatus while forming the peer-to-peer communication link, the second quality of service requirement being for the second apparatus; determining whether the first quality of service requirement is satisfied for the apparatus; and estimating whether the second quality of service requirement is satisfied for the second apparatus, wherein the quality of service estimation is based on a comparison of the satisfaction of the first quality of service requirement by the apparatus and the satisfaction of the second quality of service requirement by the second apparatus. resource, and an intent to act as a receiver is indicated through not transmitting on said assigned resource; transmitting to the second apparatus in the assigned resource based on the determination, wherein said quality of service estimation is obtained by: obtaining a first quality of service requirement for the apparatus; receiving a second quality of service requirement from the second apparatus while forming the peer-to-peer communication link, the second quality of service requirement being for the second apparatus; determining whether the first quality of service requirement is satisfied for the apparatus; and estimating whether the second quality of service requirement is satisfied for the second apparatus, wherein the quality of service estimation is based on a comparison of the satisfaction of the first quality of service requirement by the apparatus and the satisfaction of the second quality of service requirement by the second apparatus. obtaining a first quality of service requirement for the apparatus; receiving a second quality of service requirement from the second apparatus while forming the peer-to-peer communication link, the second quality of service requirement being for the second apparatus; determining whether the first quality of service requirement is satisfied for the apparatus; and estimating whether the second quality of service requirement is satisfied for the second apparatus, wherein the quality of service estimation is based on a comparison of the satisfaction of the first quality of service requirement by the apparatus and the satisfaction of the second quality of service requirement by the second apparatus.