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Antenna Hopping

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #66221 Reply
    anshu
    Guest

    Can any one explain regarding Antenna Hopping………?

    #66222 Reply
    pix
    Guest

    hi anshu,

    i am not sure if antenna hopping is something that is standardized in 3GPP. Therefore, antenna hopping might mean different things for different vendors…
    anyway, here is how it works for ALU:
    a TRX transmits one TDMA frame through one antenna, and the next one through the other antenna.
    This is a feature that works only with twinTRX.

    The benefit is that each timeslot is sent over two different antenna, alternatively, so that helps fighting fast fading. Radio coverage is increased.

    Regards
    pix

    #66223 Reply
    Dell
    Guest

    Hi,
    how to know that antenna hopping is working in ALU. Is there any parameter to activate or just like that, the only thing you need is TWIN TRX? And, how it works if the operator configures TWIN as 2 TRX and as 1 TRX?
    Thanks,
    Regards,
    Dell.

    #66224 Reply
    pix
    Guest

    hi,

    you need to be in B11, buy the feature and then set EN_ANTENNA_HOPPING to enable.
    the twinTRX must be in capacity mode (= 2TRX).

    In coverage mode (=1TRX) the twinTRX is doing TxDiversity, which is a continuous transmission over two antenna, so that’s better than antenna hopping already.

    regards
    pix

    #66225 Reply
    paraHO
    Guest

    Pix would twinTX use same azimuth or each TX having its own azimuth?

    #66226 Reply
    pix
    Guest

    hi paraho,

    welcome back 🙂

    both TX ports should be connected to antennas pointing in the same direction (from same sector).

    For example, each TX port could be connected to each port of a cross polar antenna.

    Regards,
    pix

    #66227 Reply
    amar
    Guest

    what is ater & the main function o ater

    #66228 Reply
    paraHO
    Guest

    Hi Pix 🙂 thanks, good to be back, and thanks for your reply.

Viewing 8 posts - 1 through 8 (of 8 total)
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