RE: stds-80220-requirements: 802.20 Requirements: 4.1.11 Antenna Diversity
Mike,
In 4.1.11, prefaced the requirement statement with, "At a minimum", as an encouragement to all manufacturers to provide as robust an airlink as possible. Stated this way, any standards compatible AI will at least offer RX diversity, but no vendor is prevented from providing more advanced techniques.
Section 4.1.10 remands manufacturers to provide attachment points within the PHY/MAC for the use of advanced antenna technologies, either within his own product offering, or as upgrades at some future date. Such upgrades may be provided by third parties, and may use techniques that were unavailable when the original equipment was manufactured.
Walter Rausch
-----Original Message-----
From: Michael Youssefmir [mailto:mike@arraycomm.com]
Sent: Wednesday, November 05, 2003 8:34 PM
To: Rausch, Walter F [GMG]
Cc: ! Stds-80220-Requirements (E-mail); Michael Youssefmir
Subject: Re: stds-80220-requirements: 802.20 Requirements: 4.1.11
Antenna Diversity
Hi Walter,
I have a couple comments regarding your proposed text:
> 4 .1.11 Antenna Diversity
> At a minimum, the Air Interface shall provide support for receive diversity.
I think we should remove the text "At a minimum" as it provides
little information.
Also can you please clarify your proposal itself. For example, it is
not completely clear what is being mandated and how this contributes
more beyond section 4.1.10:
4.1.10 Support for Multi Antenna Capabilities (Closed)
Interconnectivity at the PHY/MAC will be provided at the Base Station and/or the Mobile Terminal for advanced multi antenna technologies to achieve higher effective data rates, user capacity, cell sizes and reliability. As an example, MIMO.
Mike
On Fri, Oct 31, 2003 at 02:55:11PM -0600, Rausch, Walter F [GMG] wrote:
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> 802.20 Requirements: 4.1.11 Antenna Diversity
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> Current Text (and comments)
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> Editors Note: there are two versions of this section and there are numerous proponents for deleting this section. <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />
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> At a minimum, both the Base Station and the Mobile Terminal shall provide two element diversity. Diversity may be an integral part of an advanced antenna solution.
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> The Base Station shall provide antenna diversity. Diversity may be an integral part of an advanced antenna solution. Antenna diversity shall not be a requirement of the mobile station.
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> Proposed Text change.
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> 4 .1.11 Antenna Diversity
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> At a minimum, the Air Interface shall provide support for receive diversity.
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> Rational
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> Multiple antenna diversity at it's simplest provides known gain for minimal hardware and development efforts. The vendor community is free to work within these guidelines to provide the most cost-effective implementation.
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> Walter Rausch
> Principal Network Evolution Planner
> Sprint Broadband
> 6360 Sprint Parkway, Bldg. 5
> MS: KSOPHE0310-3A350
> Overland Park, KS 66251
> walter.f.rausch@mail.sprint.com
> Voice: 913-762-1598
> FAX: 913-762-0506
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