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Content for  TR 37.870  Word version:  13.0.0

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2 References  3 Definitions, symbols and abbreviations  4 General Requirements  5 Potential Deployment Scenarios and Use Cases  6 Conclusions  A Current status of RAN2 and SA2 work  B Regulatory View on Dynamic Spectrum Re-allocation  C Spectrum Re-allocation Functionality  D Interference Analysis on Spectrum Re-allocation  E Example of parameter exchange from WLAN to 3GPP  $ Change history 

 

2  References  p. 6

3  Definitions, symbols and abbreviations  p. 7

3.1  Definitions  p. 7

3.2  Abbreviations  p. 8

4  General Requirements  p. 8

4.1  Requirements  p. 8

4.1.1  Requirements from the SID  p. 8

4.1.2  Requirements for Study  p. 9

4.2  Interactions  p. 9

5  Potential Deployment Scenarios and Use Cases  p. 10

5.1  Coordination involving 3GPP-WLAN  p. 10

5.1.1  Use cases for 3GPP-WLAN Interworking  p. 10

5.1.1.1  Estimation of UE throughput in WLAN  p. 10

5.1.1.2  Improvement of eNB/NB broadcast performance  p. 10

5.1.2  Solution for parameters exchange  p. 11

5.1.2.1  Parameters exchanged from the WLAN to 3GPP nodes  p. 11

5.1.2.2  Considerations on parameters exchanged from the WLAN to 3GPP nodes  p. 11

5.1.2.3  RAN-WLAN Interface and Architecture Model 3GPP  p. 12

5.1.2.4  Correlating UE Identity between eNB/RNC and WT  p. 12

5.2  Use cases for spectrum re-allocation  p. 13

5.2.1  Spectrum Hole in Long Term  p. 14

5.2.2  Spectrum Hole in Short Term  p. 14

5.2.3  Spectrum Hole in Space  p. 15

5.2.4  Local vs. Large-Scale Averages  p. 15

5.2.5  Potential solutions for spectrum holes  p. 16

5.2.5.1  Descriptions  p. 16

5.2.5.2  Solutions  p. 16

5.2.5.3  Evaluations  p. 16

5.2.5.3.1  Interaction with RAN Mechanisms  p. 16
5.2.5.3.2  Different RAT Architectures  p. 17
5.2.5.3.3  Complementing Coverage with Unlicensed Spectrum  p. 17

5.3  Use cases for Intra 3GPP deployment scenario  p. 17

5.3.1  Consideration of user experience consistency  p. 17

5.3.2  Impacts due to CN upgrading  p. 17

5.3.3  Potential solution  p. 17

6  Conclusions  p. 17

6.1  Coordination Involving 3GPP\WLAN  p. 17

6.2  Spectrum re-allocation  p. 18

6.3  Intra-3GPP UE/traffic steering  p. 18

A  Current status of RAN2 and SA2 work  p. 18

A.1  Summary of WLAN/3GPP radio interworking in RAN2  p. 18

A.2  Summary of other WLAN related topics in SA2  p. 18

B  Regulatory View on Dynamic Spectrum Re-allocation  p. 18

C  Spectrum Re-allocation Functionality  p. 19

D  Interference Analysis on Spectrum Re-allocation  p. 20

E  Example of parameter exchange from WLAN to 3GPP  p. 21

$  Change history  p. 24

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