Wireless network characteristics Multiple wireless senders and receivers create additional problems(beyond multiple access): C C A's signal S sig streng th strength Hidden terminal problem space dB. A hear each other Signal fading 口B. C hear each other 口B. a hear each other d Ac can not hear each other gB. C hear each other means a, C unaware of their g AC can not hear each other interference at B interferring at B 6: Wireless and Mobile Networks 6-116: 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