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A30-20120806-xxx. Energy Saving Enhancement Overview. Lizhiming lizhiming @huawei.com Yingming wang wangyingming @huawei.com Jixing Liu liujixing @huawei.com. Energy Saving Enhancement Scenarios. Scenarios 1: A macro cell provides coverage in a certain area

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Energy saving enhancement overview

A30-20120806-xxx

Energy Saving Enhancement Overview

Lizhiming [email protected]

[email protected]

Jixing [email protected]


Energy saving enhancement scenarios
Energy Saving Enhancement Scenarios

  • Scenarios 1:

    • A macro cell provides coverage in a certain area

    • A cells traffic volume is very low, this cell will be shut off to save energy

    • This cell coverage area is covered by a neighbor cell

Neighbour cells: C2

Before ES

C1

C2

C3

C4

Neighbour cells: C2

Neighbour cells: C2

Neighbour cells: C1,C3,C4

Neighbour cells: C4

After ES coverage compensation (c2 is off, c3 extents coverage to C2 area)

C3

C2

C1

C4

Neighbour cells: C3

Neighbour cells: C3

Page 2


Procedures
Procedures

  • Before ES

    • C2 has low traffic volume and is to be turned off.

    • C2 notifies the neighbor cells (C1,C3,C4) that C2 is off.

    • Neighbor cells (C1,C3,C4) acknowledges the off notification of C1 and removes C2 from neighbor cell’s list.

  • ES compensation procedure

    • Option 1:

      • C2 requests C3 to perform coverage compensation, the request includes C2’s neighbor cells info(C1,C3,C4). Determination method is implementation specific.

      • C3 confirms to perform coverage expansion for C2 coverage area.

    • Option 2:

      • OM/BSC requests C3 to perform coverage compensation.

    • C3 enlarges the coverage area to cover the area of C2.

    • C3 notifies the neighbor cells (C1,C4) to update neighbor cell’s list, e.g. to add C3 to C1/C4’s neighbor cell’s list.


Procedures cont
Procedures-cont

  • Powered off cell is back to normal

    • C2 requests power on and sends the request including event time to C3

    • C3 confirms the power on request of C2, and shrink its coverage at the indicated event time.

    • C3 notifies C1 and C4 that the C3 coverage is back t o normal. C1 and C4 removes C3 from neighbor cell list.

    • C2 is power on, and notifies the neighbor C1/C3/C4.


Energy saving enhancement scenarios1
Energy Saving Enhancement Scenarios

  • Scenarios 2:

    • Multiple macro cells provide coverage in a certain area

    • A cell traffic volume is very low, this cell will be shut off to save energy

    • This cell coverage area is covered by neighbor cells

Neighbour cells: C2

Before ES

C1

C2

C3

C4

Neighbour cells: C2

Neighbour cells: C2

Neighbour cells: C1,C3,C4

Neighbour cells: C4,C1

After ES coverage compensation (c2 is off, c1 and c3 extents coverage to C2 area)

C3

C1

C2

C4

Neighbour cells: C4,C3

Neighbour cells: C3,C1

Page 5


Procedures1
Procedures

  • Before ES

    • C2 has low traffic volume and is to be turned off.

    • C2 notifies the neighbor cells (C1,C3,C4) that C2 is off.

    • Neighbor cells (C1,C3,C4) acknowledges the off notification of C1 and removes C2 from neighbor cell’s list.

  • ES compensation procedure

    • Option 1:

      • C2 requests C1 and C3 to perform coverage compensation, the request includes C2’s neighbor cells info(C1,C3,C4). Determination method is implementation specific.

      • C1 and C3 confirm to perform coverage expansion for C2 coverage area.

    • Option 2:

      • OM/BSC requests C1/C3 to perform coverage compensation.

    • C1 and C3 enlarge the coverage area to cover the area of C2.

    • C3 notifies the neighbor cells (C1, C4) to update neighbor cell’s list, e.g. to add C3 to C1/C4’s neighbor cell’s list. C1 notifies the neighbor cells (C3, C4) to update neighbor cell’s list, e.g. to add C1 to C3/C4’s neighbor cell’s list.


Procedures cont1
Procedures-cont

  • Powered off cell is back to normal

    • C2 requests power on and sends the request including event time to C1 and C3.

    • C1 and C3 confirm the power on request of C2, and shrink C1/C3 coverage at the indicated event time.

    • C1 notifies C3 and C4 that the C1 coverage is back t o normal. C3 and C4 removes C1 from neighbor cell list. C3 notifies C1 and C4 that the C3 coverage is back t o normal. C1 and C4 removes C3 from neighbor cell list.

    • C2 is power on, and notifies the neighbor C1/C3/C4.


Coverage compensation parameters
Coverage compensation parameters

  • Geographic info

    • the power off/on cell’s coverage info.

  • Cell’s info

    • The power off/on cell’s Frequency and PN info

  • Power on/off cell’s Neighbor cell info

    • Frequency and PN info



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