His successor, Paul Wolfowitz, also made the issue a priority, linking it to his goal of making aid effective.
In this paper, we label backbone-backbone links as essential or priority links and backbone-terminal links as nonessential or nonpriority links.
Appointing people to senior posts in hospitals, district offices, and provincial departments of health with the requisite knowledge, skills, and experience was the second highest priority, linking well with the challenges identified above.
In other words, the Tx node of the low-priority link must yield its D2D connection to protect the high-priority link if the potential link would incur interference toward the high-priority link.
Meanwhile, the low-priority link can be established as long as its interference toward the high-priority link is not too large.
For the conservative yielding mechanism to be effective from the first viewpoint, therefore, a transmitter of the high-priority link must give up its transmission or reduce its transmit power for the low-priority link not to perform Rx yielding.
In case that SIR measured at Rx node B is below the given threshold η TX, Tx node C of the low-priority link must yield to protect the high-priority link, which is referred to as Tx yielding.
As the high-priority link reduces its own transmit power, it may be faced with Rx yielding.
That is, a conservative yielding mechanism of the high-priority link allows for the low-priority link to be scheduled opportunistically, only whenever the high-priority link can reduce its own data rate for the packet to transmit in the current slot.
It is due to the situation that the received RTS signal of the low-priority link is weaker than the RTS interference signal of the high-priority link, which forces the low-priority link into Rx yielding even if it is exempted for Tx yielding by the conservative yielding mechanism in the high-priority links.
A flowchart in Figure6 summarizes the power control procedure for a CTS signal that implements the conservation yielding mechanism for the high-priority link.
