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TR 36.921
E-UTRA – FDD Home eNode B (HeNB)
Radio Frequency (RF)
Requirements Analysis

3GPP‑Page   ETSI‑search
V19.0.0 (PDF)  2025/09  45 p.
V18.0.0  2024/03  45 p.
V17.0.0  2022/03  45 p.
V16.0.0  2020/06  45 p.
V15.0.1  2018/09  45 p.
V14.0.0  2017/03  45 p.
V13.0.0  2016/01  44 p.
V12.0.0  2014/10  45 p.
V11.0.0  2012/09  45 p.
V10.0.0  2011/04  45 p.
V9.0.0  2010/04  45 p.
Rapporteur:
Dr. Cai, Ying

full Table of Contents for  TR 36.921  Word version:  19.0.0

1Scope  p. 6
2References  p. 6
3Definitions, symbols and abbreviations  p. 8
3.1 Definitions  p. 8
3.2 Symbols  p. 8
3.3 Abbreviations  p. 8
4General  p. 8
4.1Task description  p. 8
4.1.1HeNB Class definition  p. 8
4.1.2HeNB measurements and adaptation  p. 8
5Radio scenarios  p. 9
5.1Deployment configurations  p. 9
5.2Interference scenarios  p. 9
6HeNB RF Aspects  p. 9
7Guidance on How to Control HeNB Interference  p. 10
7.1HeNB Measurements  p. 10
7.1.1Measurements from all cells  p. 10
7.1.2Measurements to identify surrounding cell layers  p. 10
7.1.3Measurements from macro cell layer  p. 10
7.1.4Measurements of other HeNB cells  p. 11
7.2Control of HeNB Downlink Interference  p. 12
7.2.1Control Channel Protection  p. 12
7.2.1.1 Time shifting for overlapped carriers with frame time shifting at symbol level  p. 12
7.2.1.1.1Time shifting at symbol level  p. 12
7.2.1.1.2Carrier offsetting (possibly in addition to frame time shifting)  p. 14
7.2.1.2 Carrier offsetting or frequency partitioning with per-subband interference estimation  p. 15
7.2.1.3 Control of HeNB downlink interference among neighboring HeNBs control channels by frequency partitioning  p. 17
7.2.2Data Channel Protection  p. 17
7.2.2.1Control of HeNB Downlink Interference towards macro eNB data channels by frequency partition  p. 17
7.2.2.2Control of HeNB Downlink Interference among neighboring HeNBs  p. 18
7.2.2.2.1Centralized Coordination  p. 18
7.2.2.2.2Distributed Dynamic Frequency Partitioning  p. 19
7.2.2.3Control of HeNB Downlink Interference by dynamically changing HeNB CSG ID  p. 19
7.2.2.4Downlink interference management based on mapping between PCIs and transmission patterns  p. 20
7.2.2.5Techniques for Dynamic Frequency Partitioning  p. 21
7.2.2.5.1Support for dynamic FFR  p. 23
7.2.2.6Victim UE Aware Downlink Interference Management  p. 23
7.2.2.6.1Determination based on reported UE measurements  p. 24
7.2.2.6.2Determination based on detected uplink transmissions  p. 24
7.2.2.6.3Protection of idle mode UEs  p. 25
7.2.3Power Control  p. 25
7.2.3.1HeNB power control based on HUE measurement  p. 25
7.2.3.2Smart power control based on interference measurement from macro BS  p. 26
7.2.3.3HeNB power control based on HeNB-MUE path loss  p. 26
7.2.3.4GPS Based HeNB Maximum Output Adjustment  p. 27
7.2.3.4.1Maximum Output Power Adjustment based on GPS Detection Performance  p. 27
7.2.3.4.2GPS Detection Performance Combined with Macro eNB Measurements  p. 28
7.3Control of HeNB Uplink Interference  p. 28
7.3.1Control Channel Protection  p. 28
7.3.1.1HeNB Uplink Control Channel Protection  p. 28
7.3.1.2Signaling offset over the backhaul  p. 29
7.3.2Power Control  p. 29
7.3.2.1Smart Power Control based on Path Loss to Worst Victim Macro eNodeB  p. 29
7.3.2.1.1Power Cap Method  p. 30
7.3.2.1.2Power Control based on PL from HUE to its serving HeNB and PL from HUE to its worst victim MeNB  p. 33
7.3.2.1.3For Future Releases  p. 35
7.4HeNB Self-configuration  p. 36
7.4.1Information Exchange between eNBs and HeNBs  p. 36
7.5Hybrid Cells  p. 38
7.5.1Hybrid Access Level of Service  p. 38
7.5.2DL Performance Evaluation  p. 39
7.5.3Hybrid Cell RB Resource Management  p. 41
7.5.4Hybrid Cell Power Management  p. 42
$Change History  p. 43

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