Moreover, the dynamic adaptation of
such a ???horizon??? in function of the network variations or the mesh topology specification
(i.e., simple vs. complex mesh networks and static vs. dynamic scenarios) could be
examined.
5.7 Further Reading
In this chapter, we explored the problem of real-time transmission of an individual video
bitstream across a multi-hop 802.11a/e wireless network. Several key assumptions were
made, however, to limit the scope of the problem. For instance, we assumed that each
application (video flow) reserves a predetermined transmission opportunity interval, where
contention-free access to the medium is provided, thereby neglecting any resource
management and resource allocation issues. Moreover, we limited our study to a single
video stream when, in actuality, there will often be several video streams sharing the same
multi-hop wireless infrastructure.
In the literature, different centralized and distributed approaches have been adopted to
solve the resource management problem for wireless networks. Centralized approaches
solve the end-to-end routing and path selection problem as a combined optimization using
multi-commodity flow [27] algorithms, as this ensures that the end-to-end throughput is
maximized while constraints on individual link capacities are satisfied.
Pages:
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347