Sleep mode operations with multi carrier support for ieee 802 16m
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Sleep Mode Operations with Multi-carrier Support for IEEE 802.16m. IEEE 802.16 Presentation Submission Template (Rev. 9) Document Number: IEEE C802.16m-08/1033r2 Date Submitted: 2008-09-16 Source:Chung-Hsien [email protected] Yih-Shen [email protected]

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Sleep Mode Operations with Multi-carrier Support for IEEE 802.16m

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Sleep mode operations with multi carrier support for ieee 802 16m

Sleep Mode Operations with Multi-carrier Support for IEEE 802.16m

IEEE 802.16 Presentation Submission Template (Rev. 9)

Document Number: IEEE C802.16m-08/1033r2

Date Submitted: 2008-09-16

Source:Chung-Hsien [email protected]

Yih-Shen [email protected]

I-Kang [email protected]

Paul [email protected]

MediaTek Inc.No.1, Dusing Rd. 1, Hsinchu Science-Based Industrial Park,

Hsinchu, Taiwan 300, R.O.C.

Venue:MAC: Multi-Carrier Operation; in response to the TGm Call for Contributions and Comments 802.16m-08/033 for Session 57

Base Contribution: This is the base contribution

Purpose: To be discussed and adopted by TGm for the 802.16m SDD


Design principles 1 2

Design Principles (1/2)

  • Multi-carrier operation principles (specified in SDD)

    • Each MS shall consider only one RF carrier to be its primary carrier in a cell

      • A primary carrier shall be fully configured for an MS

      • A secondary carrier shall be partially configured for an MS

    • The resource allocation can span across multiple RF carriers

    • A multi-carrier system may assign secondary carriers to an MS in the downlink and/or uplink asymmetrically based on system load, peak data rate, or QoS demand

  • Summary from the multi-carrier operation principles

    • Traffic indication can be implemented on different RF carriers

    • Traffic exchange can be implemented on different RF carriers

    • Traffic indication and exchange can be implemented on different RF carriers


Design principles 2 2

Design Principles(2/2)

  • Design principles of Sleep mode in multi-carrier system

    • Reuse the fundamental design concept of sleep mode in single-carrier system

    • Enhance the power saving in RF level

      • Reduce the total times of the RFs sleep/awake switch in an MS

      • Reduce the number of MS’s active RFs as many as possible

  • Basic sleep mode operation for an MS with multi-carrier

    • All the RFs are turned off or connected with other BSs in the sleep intervals

    • One or more RFs can be awaked to exchange traffic in the extended listening windows

    • Only one of the RFs is awaked to detect/receive traffic indication in the listening window per sleep cycle

      • Option #1: Traffic indication is always executed on MS’s primary carrier

      • Option #2: Traffic indication is executed on one of the MS’s carriers


Basic sleep mode operation for an ms with multi carrier 1 2

Basic Sleep Mode Operation for an MS with Multi-carrier (1/2)

  • Option #1: Traffic indication is always executed on MS’s primary carrier

    • BS transmits traffic indication message on MS’s primary carrier

    • BS indicates MS to receive traffic on which carrier according to some purposes (e.g., enhanced power saving, bandwidth constraint, and QoS consideration)

    • MS receives traffic indication message on its primary carrier and awakes the corresponding RF to receive traffic

    • Disadvantages:

      • Performance is constrained by the schedule of MS’s primary carrier

        • Ex: MS’s primary carrier is scheduled for scanning, pre-association, and network re-entry

      • Power consumption is increased due to traffic indication and traffic exchange is executed on different RF carriers

        • Ex: BS doesn’t have any bandwidth to transmit traffic to an MS on its primary carrier


Basic sleep mode operation for an ms with multi carrier 2 2

Basic Sleep Mode Operation for an MS with Multi-carrier (2/2)

  • Option #2: Traffic indication is executed on MS’s primary or secondary carriers

    • BS transmits traffic indication message on MS’s primary or secondary carriers

    • BS indicates MS to receive traffic on which carrier according to some purposes (e.g., enhanced power saving, bandwidth constraint, and QoS consideration)

    • MS receives traffic indication message on a pre-designed carrier and awakes the corresponding RF to receive traffic

    • Advantage: Reduce the unnecessary RF sleep/awake switch for an MS

      • Traffic indication and traffic exchange is executed on the same RF carrier for an MS

    • Disadvantage: Some power consumption is caused while executing traffic indication and traffic exchange on different RF carriers

      • Ex: BS doesn’t have enough bandwidth to transmit all the traffic to an MS on a carrier


Proposed text for sdd

Proposed Text for SDD

Add the following text into SDD (IEEE 802.16m-08/003r4)

-------------------------- text begin -----------------------------------------------------------------------------

10.x.y Sleep Mode Operation with Multi-carrier Support

BS transmits traffic indication message to an MS on one of MS’s RF carriers. MS receives traffic

indication message on a pre-designed carrier. MS awakes the corresponding RF to receive traffic

in accordance with BS’s resource allocation.

-------------------------- text end -------------------------------------------------------------------------------


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