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无线通信的各种运动模型。适用于移动通信、无线传感器网络等领域。 包括：Random walk、random waypoint、random direction、boundless simulation

/******************************************************************************
*   Copyright (C) 2004  Toilers Research Group -- Colorado School of Mines
*
*   Please see COPYRIGHT.TXT and LICENSE.TXT for copyright and license
*   details.
*******************************************************************************/

Included are the implementations of six entity mobility models and three group
mobility models.  Two other group mobility models are possible by passing
the correct parameters to the reference point group mobility model (more
later).

Based on results of the paper:
    T. Camp, J. Boleng, and V. Davies, A Survey of Mobility Models for Ad Hoc 
    Network Research, Wireless Communication & Mobile Computing (WCMC): Special 
    issue on Mobile Ad Hoc Networking: Research, Trends and Applications, 
    vol. 2, no. 5, pp. 483-502, 2002 

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We are happy to share our code with you. We only ask that any published
research from using our code include a reference to the preceding paper.

If you have any questions on the code, send email to
Tracy Camp <[e-mail]>.

The research group's URL is:  http://toilers.mines.edu

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All the mobility models except two will output in either ns-2 mobility file
format and/or gnuplot format.  The boundless simulation area and Gauss-Markov
mobility models will only output a gnuplot file.

Entity mobility models:
        - random walk
        - random waypoint
        - random direction
        - boundless simulation area
        - gauss-markov
        - probabilistic random walk

There are two versions of the boundless simulation area mobility model.
torus.c is the random waypoint model placed on a boundless torus.
torus2.c is an implementation of the boundless simulation area as described
by Haas et al.

Group mobility models:
        - Reference Point Group Mobility Model (RPGM)
        - column mobility model (nodes move parallel to direction of travel)
        - column mobility model (nodes move perpendicular to direction of travel)

There is very little difference in the above codes.  The two column models
simple have one line different.  Both the column models are derived from the 
RPGM code and are a little cleaner.  Although they all work and seem to me
to be correct.

The nomadic and pursue group mobility models can be accomplished by using RPGM
and choosing the parameters ref. pt. separation and node separation from ref.
pt. appropriately.

Finally, the NS-2 mobility file output works fine.  If you want gnuplot plots
files, you'll need to run the program with only one group (multiple nodes are
possible however).  The output then needs to me sorted by node number, and
hand edited a little bit to break up each nodes movement into a different line.

===========================

Code originally written by Vanessa Davies (M.S. 2001 from the Colorado
School of Mines).  Code improved upon by Jeff Boleng (Ph.D. 2002 from
the Colorado School of Mines).

Updated in Jan. 2004: - Nick Bauer (M.S. 2004 from the Colorado
School of Mines).

Code is updated to fix the problem of two nodes hitting a wall in the random 
walk mobility file generator and the problem of no pause in the random 
direction mobility file generator. Thanks to Mikko S鋜el