A method of wireless communication of a user equipment, UE, comprising: receiving a synchronization signal and timing information from each UE of a set of UEs upon the UE turning on; determining a set of timing information of the timing information received from the set of UEs that has a reliability indicator indicating that the received synchronization signal is reliable; and determining a lowest hop count of one of more hop counts in the set of timing information when the set of timing information is not an empty set, determining a second timing information associated with a second synchronization signal to be transmitted, the second timing information including a second hop count and a second reliability indicator associated with the second synchronization signal, the second reliability indicator being independent of the second hop count and indicating one of reliable or unreliable; broadcasting the second timing information with the second synchronization signal, wherein the second reliability indicator included in the second timing information is set by the UE to the one of reliable or unreliable; wherein when the set of timing information is not an empty set: the determining the second timing information comprises setting the second hop count to a minimum of a maximum hop count l max and one more than said lowest hop count of the one or more hop counts in the set of timing information, and setting the second reliability indicator to indicate that the broadcasted second synchronization signal is reliable, and the second synchronization signal is broadcasted based on the synchronization signal corresponding to the timing information that includes said lowest hop count of the one or more hop counts in the set of timing information. receiving a synchronization signal and timing information from each UE of a set of UEs upon the UE turning on; determining a set of timing information of the timing information received from the set of UEs that has a reliability indicator indicating that the received synchronization signal is reliable; and determining a lowest hop count of one of more hop counts in the set of timing information when the set of timing information is not an empty set, determining a second timing information associated with a second synchronization signal to be transmitted, the second timing information including a second hop count and a second reliability indicator associated with the second synchronization signal, the second reliability indicator being independent of the second hop count and indicating one of reliable or unreliable; broadcasting the second timing information with the second synchronization signal, wherein the second reliability indicator included in the second timing information is set by the UE to the one of reliable or unreliable; wherein when the set of timing information is not an empty set: the determining the second timing information comprises setting the second hop count to a minimum of a maximum hop count l max and one more than said lowest hop count of the one or more hop counts in the set of timing information, and setting the second reliability indicator to indicate that the broadcasted second synchronization signal is reliable, and the second synchronization signal is broadcasted based on the synchronization signal corresponding to the timing information that includes said lowest hop count of the one or more hop counts in the set of timing information. the determining the second timing information comprises setting the second hop count to a minimum of a maximum hop count l max and one more than said lowest hop count of the one or more hop counts in the set of timing information, and setting the second reliability indicator to indicate that the broadcasted second synchronization signal is reliable, and the second synchronization signal is broadcasted based on the synchronization signal corresponding to the timing information that includes said lowest hop count of the one or more hop counts in the set of timing information.