IP Library › Granted Patent US 10,129,738

Granted Patent B2

US 10,129,738 · App. 14/475,918 · Granted Nov 13, 2018

UE capability report method and apparatus in mobile communication system

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Quick Facts

Patent No.: US 10,129,738
App. No.: 14/475,918
Granted: Nov 13, 2018
Kind: B2

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Abstract

A method and an apparatus for reporting a capability of a User Equipment (UE) supporting advanced functions such as Carrier Aggregation (CA) are provided. The method includes checking, when a control message requesting a capability report is received, a Radio Access Technology (RAT) type and transmitting, when the RAT type is set to Evolved Universal Terrestrial Radio Access (EUTRA), at least one band combination information on at least one band combination supported by the terminal. The UE capability report method is capable of reporting the UE capability related to advanced functions, such as CA and Multiple Input Multiple Output (MIMO), to a network efficiently with the least amount of information, thereby resulting in an improvement of radio resource efficiency.

Claims (54)

1. A method for reporting capability of a User Equipment (UE), the method comprising:

generating a UE capability message comprising at least one band combination information; and

transmitting the generated UE capability message to an evolved Node B (eNB),

wherein each band combination information comprises at least one band parameter including a band indicator indicating a frequency band and first band capability information and second band capability information,

wherein the first band capability information and the second band capability information each include carrier aggregation (CA) information and information on a number of layers supported by the UE on the indicated frequency band, and

wherein the CA information includes a single value corresponding to a maximum number of component carriers and an aggregated transmission bandwidth configuration of the band both supported by the UE on the indicated frequency band.

2. The method of claim 1 , wherein the aggregated transmission bandwidth configuration indicates a bandwidth size supported by the UE in the band.

3. The method of claim 1 , wherein the number of layers indicates Multiple Input Multiple Output (MIMO) capability.

4. The method of claim 1 , wherein all the combinations of band capability information in each band combination information are supported by the UE.

5. The method of claim 1 , wherein all the combinations of band capability information in each band combination information have a same measurement gap requirement.

6. The method of claim 1 , further comprising:

receiving a UE capability enquiry message from the eNB,

wherein the generating of the UE capability message is performed in response to receiving the UE capability enquiry message from the eNB.

7. The method of claim 1 , further comprising:

setting a Radio Access Technology (RAT) type of the UE capability message to EUTRA, if an EUTRA indicator is included in a UE capability enquiry message.

8. An apparatus for reporting capability of a User Equipment (UE), the apparatus comprising:

a controller configured to control to generate a UE capability message comprising at least one band combination information; and

a transceiver configured to transmit the generated UE capability message to an evolved Node B (eNB),

9. The apparatus of claim 8 , wherein the aggregated transmission bandwidth configuration indicates a bandwidth size supported by the UE in the band.

10. The apparatus of claim 8 , wherein the number of layers indicates Multiple Input Multiple Output (MIMO) capability.

11. The apparatus of claim 8 , wherein all the combinations of band capability information in each band combination information are supported by the UE.

12. The apparatus of claim 8 , wherein all the combinations of band capability information in each band combination information have a same measurement gap requirement.

13. The apparatus of claim 8 , wherein the transceiver is further configured to receive a UE capability enquiry message from the eNB, and

the controller is further configured to generate the UE capability message in response to receiving the UE capability enquiry message from the eNB.

14. The apparatus of claim 8 , the controller is further configured to set a Radio Access Technology (RAT) type of the UE capability message to EUTRA, if an EUTRA indicator is included in a UE capability enquiry message.

15. A method by an evolved Node B (eNB) for receiving capability of a User Equipment (UE), the method comprising:

transmitting a UE capability enquiry message to the UE; and

receiving a UE capability message from the UE,

wherein the UE capability message comprises at least one band combination information and each band combination information comprises at least one band parameter including a band indicator indicating a frequency band and first band capability information and second band capability information,

16. The method of claim 15 , wherein the aggregated transmission bandwidth configuration indicates a bandwidth size supported by the UE in the band.

17. The method of claim 15 , wherein the number of layers indicates Multiple Input Multiple Output (MIMO) capability.

18. The method of claim 15 , wherein all the combinations of band capability information in each band combination information are supported by the UE.

19. The method of claim 15 , wherein all the combinations of band capability information in each band combination information have a same measurement gap requirement.

20. The method of claim 15 , wherein the receiving of the UE capability message is performed in response to transmitting the UE capability enquiry message to the UE.

21. The method of claim 15 , wherein if an EUTRA indicator is included in the UE capability enquiry message, a Radio Access Technology (RAT) type of the UE capability message is set to EUTRA.

22. An apparatus of an evolved Node B (eNB) for receiving capability of a User Equipment (UE), the apparatus comprising:

a transceiver; and

a controller configured to control the transceiver to:

transmit a UE capability enquiry message to the UE, and

receive a UE capability message from the UE,

wherein the UE capability message comprising at least one band combination information and each band combination information comprises at least one band parameter including a band indicator indicating a frequency band and first band capability information and second band capability information,

23. The apparatus of claim 22 , wherein the aggregated transmission bandwidth configuration indicates a bandwidth size supported by the UE in the band.

24. The apparatus of claim 22 , wherein the number of layers indicates Multiple Input Multiple Output (MIMO) capability.

25. The apparatus of claim 22 , wherein all the combinations of band capability information in each band combination information are supported by the UE.

26. The apparatus of claim 22 , wherein all the combinations of band capability information in each band combination information have a same measurement gap requirement.

27. The apparatus of claim 22 , wherein the controller is further configured to receive the UE capability message in response to transmitting the UE capability enquiry message to the UE.

28. The apparatus of claim 22 , wherein if an EUTRA indicator is included in the UE capability enquiry message, a Radio Access Technology (RAT) type of the UE capability message is set to EUTRA.