[STDS-802-16-MOBILE] [Handoff] Soft Handover in OFDMA mode

[JaeWeon Cho <jaeweon.cho@SAMSUNG.COM>]

Dear All,

 

I just uploaded two contributions. Sorry for being late.

 

(1)  One is PHY contribution that describes Subchannel allocation schemes in PUSC zone

      for soft handover in OFDMA PHY mode.

 

      We are now considering various types of soft handover on PHY layer.

      This uploaded contribution describes just a part of them.

 

      The assumptions and considerations for the soft handover in the contribution are the following:

 

       - OFDMA PHY mode
       - Handover occurs between multi-sector BS¡¯s and also between sectors of a multi-sector BS
       - Soft handover in PUSC zone.
       - BS¡¯s in the active set are synchronized through the backbone communications
       - Consider delay-sensitive service such as VoIP, rather than delay-tolerant service
       - H-ARQ is turned off during soft handover
       - The arrival time difference of the signals from BS¡¯s in the active set is less than CP (cyclic prefix) time

 

      Two types of soft handover are proposed in the contribution.

 

      - Type 1:  RF summing on downlink,  Selection diversity on uplink

      - Type 2:  Coherent combining on downlink,  Selection diversity on uplink

 

(2)  The other is MAC contribution that describes Soft handover algorithm in OFDMA PHY mode.

      This contribution supports our proposed soft handover types (PHY layer).

 

Thank you and see you in the CC.

 

Best regards,

 

Jaeweon

-----------------------------------
Jaeweon Cho, Ph.D.
Samsung Electronics Co.
Telecommunication R&D Center
416 Maetan-3, Yeongtong, Suwon
Gyeonggi-do, 442-600, South Korea 
Tel) +82-31-279-5796
Fax) +82-31-279-5130
E-mail) jaeweon.cho@samsung.com
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