From cce22c1c8c222f25efe2a4f4220fa220cef228e8 Mon Sep 17 00:00:00 2001 From: beutel Date: Thu, 14 Jun 2007 17:41:50 +0000 Subject: [PATCH] repaired warnings on compilation to html, especially the figure is not what it was meant to be in the txt file anymore... --- doc/txt/tep126.txt | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/doc/txt/tep126.txt b/doc/txt/tep126.txt index 65f20f74..3a66ebd5 100644 --- a/doc/txt/tep126.txt +++ b/doc/txt/tep126.txt @@ -181,44 +181,43 @@ The layers found within this radio stack are in the following order: | Application Layer | | | +-----------------------+--------------------------+ - | - | + +----------------------+-------------------------+ | Active Message Layer | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Unique Send Layer | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Optional Packet Link Layer | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Optional Low Power Listening Implementations | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Unique Receive Filtering Layer | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Optional 6LowPAN TinyOS Network Layer | +----------------------+-------------------------+ - | + +----------------------+-------------------------+ | Carrier Sense Multiple Access (CSMA) | +----------------------+-------------------------+ - | + +------------+------------+ - | | + +----------+----------+ +----------+----------+ | ReceiveP | | TransmitP | +----------+----------+ +----------+----------+ - | | + +------------+------------+ - | + +-----------------------+-------------------------+ | SPI bus, GPIO, Interrupts, Timer Capture | +-------------------------------------------------+ @@ -468,6 +467,7 @@ 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 @@ -479,6 +479,7 @@ power consumption: 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 @@ -489,11 +490,13 @@ power consumption: 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 -- 2.39.2