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Re: [tcpm] [tsvwg] inband signaling

Brian E Carpenter <brian.e.carpenter@gmail.com> Thu, 15 March 2018 19:56 UTC

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Sender: Brian Carpenter <becarpenter46@gmail.com>
To: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, Lin Han <Lin.Han@huawei.com>, "tte@cs.fau.de" <tte@cs.fau.de>
Cc: "tcpm@ietf.org" <tcpm@ietf.org>, "tsvwg@ietf.org" <tsvwg@ietf.org>, "'iccrg@irtf.org'" <iccrg@irtf.org>
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From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Date: Fri, 16 Mar 2018 08:56:20 +1300
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Subject: Re: [tcpm] [tsvwg] inband signaling
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On 15/03/2018 21:23, Ingemar Johansson S wrote:

...
> [IJ] As for eNB, the allocation of GBR/MBR comes with admission control. However because of physical limitations in terms of limited power coverage and/or radio interference, no in-band or out of band QoS signaling in the world can guarantee a given throughput in all conditions. It is all matter of prioritization of the available resource blocks, where each resources worth in terms of bits is dictated by the laws of Shannon, somewhat on steroids with the use of adaptive antenna beamforming.

I just wanted to applaud that. In a wireless network where random interference is always possible, physics tells us that you can never ignore Shannon's theorem, and you can never ignore queueing theory as a result.

    Brian

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