TEP 126

[tinyos-2.x.git] / doc / txt / tep126.txt

diff --git a/doc/txt/tep126.txt b/doc/txt/tep126.txt
index de8047a2291cffb4c5648618b319846055f345d3..56b50f1903af0ab071d6be122bed85acb47d29b2 100644 (file)
--- a/doc/txt/tep126.txt
+++ b/doc/txt/tep126.txt
@@ -398,37 +398,37 @@ transmitters at the expense of power consumption.
 There are several methods the CC2420 radio stack uses to minimize
 power consumption:
 
-1. Invalid Packet Shutdown
-  Typically, packets are filtered out by address at the radio hardware
-  level.  When a receiver wakes up and does not receive any
-  packets into the low power listening layer of the radio stack, it 
-  will automatically go back to sleep after some period of time.  As a 
-  secondary backup, if address decoding on the radio chip is disabled, 
-  the low power listening implementation will shut down the radio if 
-  three packets are receive that do not belong to the node.  This helps 
-  prevent against denial of sleep attacks or the typical transmission 
-  behavior found in an ad-hoc network with many nodes.
-
-2. Early Transmission Completion
-  A transmitter typically sends a packet for twice the amount of time
-  as the receiver's receive check period.  This increases the probability
-  that the receiver will detect the packet.  However, if the transmitter receives
-  an acknowledgement before the end of its transmission period, it
-  will stop transmitting to save energy.  This is an improvement
-  over previous low power listening implementations, which transmitted
-  for the full period of time regardless of whether the receiver has 
-  already woken up and received the packet.
-
-3. Auto Shutdown
-  If the radio does not send or receive messages for some period of
-  time while low power listening is enabled, the radio will automatically 
-  turn off and begin duty cycling at its specified duty cycle period.
-
-4. CCA Sampling Strategy
-  The actual receive check is performed in a loop inside a function, 
-  not a spinning task.  This allows the sampling to be performed
-  continuously, with the goal of turning the radio off as quickly as 
-  possible without interruption.
+   1. *Invalid Packet Shutdown:*
+   Typically, packets are filtered out by address at the radio hardware
+   level.  When a receiver wakes up and does not receive any
+   packets into the low power listening layer of the radio stack, it 
+   will automatically go back to sleep after some period of time.  As a 
+   secondary backup, if address decoding on the radio chip is disabled, 
+   the low power listening implementation will shut down the radio if 
+   three packets are receive that do not belong to the node.  This helps 
+   prevent against denial of sleep attacks or the typical transmission 
+   behavior found in an ad-hoc network with many nodes.
+
+   2. *Early Transmission Completion:*
+   A transmitter typically sends a packet for twice the amount of time
+   as the receiver's receive check period.  This increases the probability
+   that the receiver will detect the packet.  However, if the transmitter receives
+   an acknowledgement before the end of its transmission period, it
+   will stop transmitting to save energy.  This is an improvement
+   over previous low power listening implementations, which transmitted
+   for the full period of time regardless of whether the receiver has 
+   already woken up and received the packet.
+
+   3. *Auto Shutdown:*
+   If the radio does not send or receive messages for some period of
+   time while low power listening is enabled, the radio will automatically 
+   turn off and begin duty cycling at its specified duty cycle period.
+ 
+   4. *CCA Sampling Strategy:*
+   The actual receive check is performed in a loop inside a function, 
+   not a spinning task.  This allows the sampling to be performed
+   continuously, with the goal of turning the radio off as quickly as 
+   possible without interruption.
 
 
 8. CC2420 Settings and Registers