Wireless network characteristics Multiple wireless senders and receivers create additional problems(beyond multiple access): A's signal C's signal strength strength Hidden terminal problem space B,A hear each other Signal fading: ▣B,C hear each other B,A hear each other A,C can not hear each other B,C hear each other means A,C unaware of their A,C can not hear each other interference at B interferring at B 6:Wireless and Mobile Networks 6-11 6: Wireless and Mobile Networks 6-11 Wireless network characteristics Multiple wireless senders and receivers create additional problems (beyond multiple access): A B C Hidden terminal problem  B, A hear each other  B, C hear each other  A, C can not hear each other means A, C unaware of their interference at B A B C A’s signal strength space C’s signal strength Signal fading:  B, A hear each other  B, C hear each other  A, C can not hear each other interferring at B