An efficient and reliable geographical location dissemination algorithm based on priority

An efficient and reliable geographical location dissemination algorithm based on priority (ERGLDP) is proposed to improve the performance of the real-time geographical location sharing applications on mobile terminals. In the proposed algorithm, owning to the instability of the ad-hoc network, which is formed by the mobile terminals, the opportunistic networks are adopted to transmit messages. The most important messages are supposed to be transmitted first to improve the accuracy of application, while the least important ones should be deleted, aiming to reduce the using of network bandwidth and cache space. In the ERGLDP algorithm, the computation of the message priority that is different from the existing algorithms considers all the influential factors. In addition, the messages are transmitted and deleted based on their priority. To avoid the transmission collisions, a new medium access control (MAC) protocol is designed in this algorithm.