Transcript IEEE C802.16m-09/1015

Power Saving in Multi-Carrier Operation
IEEE 802.16 Presentation Submission Template (Rev. 9)
Document Number:
IEEE C802.16m-09/1015
Date Submitted:
2008-04-27
Source:
Juhee Kim, Eunkyung Kim,
Soojung Jung, Jaesun Cha,
Kwangjae Lim, Hyun Lee, Chulsik Yoon
E-mail:
[email protected]
ETRI
Venue:
Re: Category: AWD-New contribution /Area: Multi-Carrier
Base Contribution:
IEEE C802.16m-09/1015
Purpose:
To be discussed and adopted by TGm for the 802.16m AWD
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Background
• Even in case that the ABS informs resource allocation only
through the primary carrier, the AMS shall receive and buffer
the frames on its active secondary carriers. MS’s continuous
monitoring the active secondary carriers comes with expense
of wasteful power consumption.
•  A power management scheme should be considered for
efficient power saving.
Motives
• For a ‘real-time’ service flow, the AMS may not need to monitor the
control channel in every frame, when traffic is transmitted with persistent
allocation.
• If a specific secondary carrier is assigned only for traffic in the service
flow, the AMS doesn’t need to listen to the secondary carrier in every
frame.
• As the AMS can expect the next listening time, it can perform micro-sleep
until the next listening time.
•  This can reduce power consumption and ease the sleep mode operation
in multicarrier operation.
Suggestion
• Suggestion: A secondary carrier can be targeted to a certain set of service
flows, which serve real-time traffic.
• For example,
– If an AMS has multiple service flows for ‘real-time’ traffic and ‘BE’ traffic, and
manages one primary carrier and one secondary carrier,
– The ABS assigns the secondary carrier to serve the real-time traffic and the primary
carrier to serve the BE traffic and control signaling.
– When persistent allocation is used on the secondary carrier, the AMS can perform microsleep during the interval where the resource is expected not to be allocated.
Proposed text
Insert the following sentence into 15.2.x.x.x QoS and Connection Management
• The ABS may assign a specific set of the real-time service
flows to a secondary carrier of the AMS. In this case, the
ABS allocates resource only for the service flows on the
secondary carrier.
Insert the following sentence into 15.2.x.x.x Power Management
• The AMS may be assigned to a secondary carrier in order to
serve only real-time traffic. In this case, if the persistent
allocation is used for the AMS on the secondary carrier, the
AMS may disable reception during the interval where no
allocation is expected.