| i ⟶ possible integer (e.g. 1,2,3,. . .) |
| xi ⟶ node |
| N ⟶ neighbors set of xi |
| ni ⟶ xi neighbor xi |
| NT ⟶ node type of xi |
| TMR ⟶ timer |
| SYNC ⟶ synchronization packet before updating of time slot |
| SYNCn ⟶ synchronization packet after updating of time slot |
| BN ⟶ border-node |
| SN ⟶ stationary-node |
| CH ⟶ cluster-head node of SN |
| MN ⟶ mobile-node |
| CH ⟶ cluster-head node of mobile-node |
| TS ⟶ time slot |
| HB ⟶ handover-bit |
| RSSI ⟶ radio signal strength indicator |
| LQI ⟶ link quality indicator |
| RSSIn ⟶ RSSI new values |
| RSSIo ⟶ RSSI old values |
| LQIn ⟶ LQI new values |
| LQIo ⟶ LQI old values |
| (1) | Start |
| (2) | )Xi starts listening for SYNC; |
| (3) | )if xi receives SYNC from ni where ni ∈ N then |
| (4) | xi adopts Schdlc; |
| (5) | xi.status = CM; |
| (6) | xi.NT = SN;/∗ node become a stationary node ∗/ |
| (7) | if xi receives Schdln| Schdln ≠ Schdlcthen |
| (8) | xi sends Inquiry msg to its parent node that is CH |
| (9) | CH looks its parent node upon receiving Inquire msg |
| (10) | if (CH.parent = BN) |
| (11) | CH sends Inquire Ack to the CM |
| (12) | xi maintains the same status that is CM |
| (13) | else |
| (14) | xi.status = B.N/∗ node becomes border node ∗/ |
| (15) | xi adopts both schedules; |
| (16) | Reschedule TMR = 5 mins; /∗ next schedule phase timer ∗/ |
| (17) | end if |
| (18) | TMR. |
| (19) | if TMR = 0 then |
| (20) | goto Line 2 |
| (21) | end if |
| (22) | else |
| (23) | xi.status = CH;/∗ node becomes a cluster head ∗/ |
| (24) | xi creates Schdlc and broadcast it; |
| (25) | end it |
| (26) | End. |
