51 lines
2 KiB
Markdown
51 lines
2 KiB
Markdown
# Orchestra
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## Overview
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Orchestra is an autonomous scheduling solution for TSCH, where nodes maintain
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their own schedule solely based on their local RPL state. There is no centralized
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scheduler nor negociatoin with neighbors, i.e. no traffic overhead. The default
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Orchestra rules can be used out-of-box in any RPL network, reducing contention
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to a low level. Orchestra is described and evaluated in
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[*Orchestra: Robust Mesh Networks Through Autonomously Scheduled TSCH*](http://www.simonduquennoy.net/papers/duquennoy15orchestra.pdf), ACM SenSys'15.
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## Requirements
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Orchestra requires a system running TSCH and RPL.
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For sender-based unicast slots (`ORCHESTRA_UNICAST_SENDER_BASED`), it requires
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RPL with downwards routing enabled (relies on DAO).
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## Getting Started
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To use Orchestra, add a couple global definitions, e.g in your `project-conf.h` file.
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Disable 6TiSCH minimal schedule:
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`#define TSCH_SCHEDULE_CONF_WITH_6TISCH_MINIMAL 0`
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Enable TSCH link selector (allows Orchestra to assign TSCH links to outgoing packets):
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`#define TSCH_CONF_WITH_LINK_SELECTOR 1`
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Set up the following callbacks:
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```
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#define TSCH_CALLBACK_NEW_TIME_SOURCE orchestra_callback_new_time_source
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#define TSCH_CALLBACK_PACKET_READY orchestra_callback_packet_ready
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#define NETSTACK_CONF_ROUTING_NEIGHBOR_ADDED_CALLBACK orchestra_callback_child_added
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#define NETSTACK_CONF_ROUTING_NEIGHBOR_REMOVED_CALLBACK orchestra_callback_child_removed
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```
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To use Orchestra, fist add it to your makefile `APPS` with `APPS += orchestra`.
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Finally:
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* add Orchestra to your makefile `APPS` with `APPS += orchestra`;
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* start Orchestra by calling `orchestra_init()` from your application, after
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including `#include "orchestra.h"`.
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## Configuration
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Orchestra comes with a number of pre-installed rules, `orchestra-rule-*.c`.
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You can define your own by using any of these as a template.
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A default Orchestra configuration is described in `orchestra-conf.h`, define your own
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`ORCHESTRA_CONF_*` macros to override modify the rule set and change rules configuration.
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