[Tinyos-2-commits] CVS: tinyos-2.x/doc/txt tep124.txt,1.8,1.9

[Omprakash Gnawali]

Update of /cvsroot/tinyos/tinyos-2.x/doc/txt
In directory ddv4jf1.ch3.sourceforge.com:/tmp/cvs-serv5674

Modified Files:
	tep124.txt 
Log Message:
comments from Martin

Index: tep124.txt
===================================================================
RCS file: /cvsroot/tinyos/tinyos-2.x/doc/txt/tep124.txt,v
retrieving revision 1.8
retrieving revision 1.9
diff -C2 -d -r1.8 -r1.9
*** tep124.txt	6 Dec 2008 00:57:31 -0000	1.8
--- tep124.txt	31 Jan 2009 06:47:08 -0000	1.9
***************
*** 55,59 ****
  quality is a value in the range of 0 to 255 that describes the quality
  of the link from A to B estimated by B by counting the successfully
! received packets from A among all the packets transmitted by B.
  
  2.2 Out-bound Link Quality
--- 55,63 ----
  quality is a value in the range of 0 to 255 that describes the quality
  of the link from A to B estimated by B by counting the successfully
! received packets from A among all the packets transmitted by A. Thus,
! in-bound link quality is the empirical probability that a packet will
! be successfully received on a given link. A value of 255 represents a
! probability of 1 and a value of 0 represents a probability of 0 of
! successfully receiving a packet on a given link.
  
  2.2 Out-bound Link Quality
***************
*** 66,79 ****
  link qualities.
  
! 2.3 Link Quality
  --------------------------------------------------------------------
  
! The link quality between a directed node pair (A,B) is the probability
! that a packet transmitted by A will be successfully received and
! acknowledged by B. The bidirectional link quality of an undirected
! node pair (A,B) is the product of the link quality of (A,B) and
! (B,A). This definition assumes independent link losses. It also
! includes the case when the link quality of (A,B) and (B,A) are
! different; this can occur due to local interference or noise.
  
  2.4 Link Information Entry
--- 70,86 ----
  link qualities.
  
! 2.3 Bi-directional Link Quality
  --------------------------------------------------------------------
  
! LEEP does not define or compute bi-directional link quality. LEEP
! provides a way to exchange sufficient information to compute in-bound
! and out-bound link qualities. These two link qualities can be used to
! compute the bi-directional link quality. One popular way to define the
! bi-directional link quality between a node pair (A,B) as the
! probability that a packet transmitted by A will be successfully
! received and acknowledged by B. This approach computes the
! bi-directional link quality of a node pair (A,B) as the product of the
! link quality of (A,B) and (B,A).
! 
  
  2.4 Link Information Entry