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Content for TR 36.921 Word version: 16.0.0

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2 References

3 Definitions, symbols and abbreviations Word‑p. 8

3.1 Definitions

3.2 Symbols

3.3 Abbreviations

4 General

4.1 Task description

4.1.1 HeNB Class definition

4.1.2 HeNB measurements and adaptation

5 Radio scenarios Word‑p. 9

5.1 Deployment configurations

5.2 Interference scenarios

6 HeNB RF Aspects

7 Guidance on How to Control HeNB Interference Word‑p. 10

7.1 HeNB Measurements

7.1.1 Measurements from all cells

7.1.2 Measurements to identify surrounding cell layers

7.1.3 Measurements from macro cell layer

7.1.4 Measurements of other HeNB cells Word‑p. 11

7.2 Control of HeNB Downlink Interference Word‑p. 12

7.2.1 Control Channel Protection

7.2.1.1 Time shifting for overlapped carriers with frame time shifting at symbol level

7.2.1.1.1 Time shifting at symbol level

7.2.1.1.2 Carrier offsetting (possibly in addition to frame time shifting) Word‑p. 14

7.2.1.2 Carrier offsetting or frequency partitioning with per-subband interference estimation Word‑p. 15

7.2.1.3 Control of HeNB downlink interference among neighboring HeNBs control channels by frequency partitioning Word‑p. 17

7.2.2 Data Channel Protection

7.2.2.1 Control of HeNB Downlink Interference towards macro eNB data channels by frequency partition

7.2.2.2 Control of HeNB Downlink Interference among neighboring HeNBs Word‑p. 18

7.2.2.2.1 Centralized Coordination

7.2.2.2.2 Distributed Dynamic Frequency Partitioning Word‑p. 19

7.2.2.3 Control of HeNB Downlink Interference by dynamically changing HeNB CSG ID

7.2.2.4 Downlink interference management based on mapping between PCIs and transmission patterns Word‑p. 20

7.2.2.5 Techniques for Dynamic Frequency Partitioning Word‑p. 21

7.2.2.5.1 Support for dynamic FFR Word‑p. 23

7.2.2.6 Victim UE Aware Downlink Interference Management

7.2.2.6.1 Determination based on reported UE measurements Word‑p. 24

7.2.2.6.2 Determination based on detected uplink transmissions

7.2.2.6.3 Protection of idle mode UEs Word‑p. 25

7.2.3 Power Control

7.2.3.1 HeNB power control based on HUE measurement

7.2.3.2 Smart power control based on interference measurement from macro BS Word‑p. 26

7.2.3.3 HeNB power control based on HeNB-MUE path loss

7.2.3.4 GPS Based HeNB Maximum Output Adjustment Word‑p. 27

7.2.3.4.1 Maximum Output Power Adjustment based on GPS Detection Performance

7.2.3.4.2 GPS Detection Performance Combined with Macro eNB Measurements Word‑p. 28

7.3 Control of HeNB Uplink Interference

7.3.1 Control Channel Protection

7.3.1.1 HeNB Uplink Control Channel Protection

7.3.1.2 Signaling offset over the backhaul Word‑p. 29

7.3.2 Power Control

7.3.2.1 Smart Power Control based on Path Loss to Worst Victim Macro eNodeB

7.3.2.1.1 Power Cap Method Word‑p. 30

7.3.2.1.2 Power Control based on PL from HUE to its serving HeNB and PL from HUE to its worst victim MeNB Word‑p. 33

7.3.2.1.3 For Future Releases Word‑p. 35

7.4 HeNB Self-configuration Word‑p. 36

7.4.1 Information Exchange between eNBs and HeNBs

7.5 Hybrid Cells Word‑p. 38

7.5.1 Hybrid Access Level of Service

7.5.2 DL Performance Evaluation Word‑p. 39

7.5.3 Hybrid Cell RB Resource Management Word‑p. 41

7.5.4 Hybrid Cell Power Management Word‑p. 42

$ Change History Word‑p. 43