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A Simplified Method for Beamforming Training Procedure for Multi-Band Capable MM-Wave Device

A Simplified Method for Beamforming Training Procedure for Multi-Band Capable MM-Wave Device. Date: 20 13-01-23. Author(s)/contributors:.

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A Simplified Method for Beamforming Training Procedure for Multi-Band Capable MM-Wave Device

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  1. A Simplified Method for Beamforming Training Procedure for Multi-Band Capable MM-Wave Device Date:2013-01-23 Author(s)/contributors: (This will grow to reflect those providing explicit contributions / review comments of this document. Please let author know if any name is conspicuously missing from this list.) Jiamin Chen, Huawei

  2. Introduction A device is multi-band capable if the value of its local MIB variable dot11MultibandImplemented is true. The multi-band capable MM-Wave device can operate on both 60GHz and 2.4GHz or/and 5GHz frequency band. Beamforming(BF) is a mechanism that is used by a pair of STAs to achieve the necessary DMG link budget for subsequent communication. Multi-band capable MM-Wave device can send feedback information such as Initiator Sector Sweep (ISS) Sector ID via 2.4GHz or 5GHz frequency band MAC and PHY layer to speed up the BF training procedure to setup DMG link. Jiamin Chen, Huawei

  3. Beamforming Training Procedure for 802.11ad BF training is a bidirectional sequence of BF training frame transmissions that uses sector sweep and provides the necessary signaling to allow each STA to determine appropriate antenna system settings for both transmission and reception. Jiamin Chen, Huawei

  4. Beamforming training procedure for 802.11ad Sweep Sector STA 1 Step 1: Initiator Sector Sweep phase STA 2 STA 1 STA 2 Step 2: Responder Sector Sweep phase • An example of 802.11ad BF training procedure: Step1: Initiator Sector Sweep Phase The initiator (STA1) transmits Initiator Sector Sweep (ISS) frame with corresponding Sector ID to all sectors. Meanwhile, The responder (STA2) receives the ISS frame sent by STA1. Step2: Responder Sector Sweep Phase The STA2 transmits Responder Sector Sweep (RSS) frame with corresponding sector ID to all sectors. Once the STA1 receives the RSS frame sent by STA2, both two STAs will know the location of each other and the appropriate antenna system settings for both transmission and reception. • Step 2: Jiamin Chen, Huawei

  5. A Simplified method for Beamforming Training Procedure for Multi-Band Capable MM-Wave Device STA 1 STA 2 Feedback information Step 1 For multi-band MM-Wave Device, once receiving the ISS frame sent by STA1 in Step 1, the STA2 can immediately sends feedback information with Initiator Sector Sweep (ISS) Sector ID to STA1 via 2.4GHz or 5GHz frequency band MAC and PHY layer. So, the Step 2 Responder Sector Sweep phase can be omitted. Call for comments and suggestion for further study. Jiamin Chen, Huawei

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