Method and apparatus for supporting multiple frequency bands in mobile communication system

• US 10,349,407 B2
• Filed: 03/16/2015
• Issued: 07/09/2019
• Est. Priority Date: 08/22/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Sangbum, Kim, Soenghun, Van Lieshout, Gert-Jan, Van Der Velde, Himke, Jeong, Kyeongin
• Primary Examiner(s): Yao, Kwang B
• Assistant Examiner(s): Castaneyra, Ricardo H
• Application Number:
  US14/658,674
• Publication Number:
  US 20150189657A1
• Time in Patent Office: 1,576 Days
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04W 48/10 using broadcasted information
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

A method and an apparatus for supporting multiple frequency bands efficiently in a mobile communication system are provided. The method includes generating first system information including a frequency band indicator indicating a frequency band supported by the base station and an additional frequency band indicator indicating at least one frequency band supported by the base station, and broadcasting the first system information.

Claims

1. A method for supporting multiple frequency bands by a base station in a wireless communication system, the method comprising:

generating first system information including first information indicating a first frequency band supported by a cell and a list of at least one second information indicating at least one second frequency band supported by the cell;

transmitting the first system information to a terminal;

generating second system information including uplink frequency information, first spectrum emission information corresponding to the first information and a list of at least one second spectrum emission information corresponding to the at least one second information; and

transmitting the second system information to the terminal,

wherein an uplink frequency offset and a lower limit of an uplink frequency are determined based on the first information if the first frequency band is not supported and the at least one second frequency band is supported by the terminal, and

wherein the uplink frequency offset and the lower limit of the uplink frequency are used for identifying an uplink carrier frequency.

2. The method of claim 1, wherein the uplink carrier frequency is identified based on the uplink frequency information included in the second system information, the uplink frequency offset and the lower limit of the uplink carrier frequency.

3. The method of claim 1, wherein the at least one second spectrum emission information of the second system information is listed in a same order of the at least one second information supported by the cell based on the first system information.

4. A base station supporting a plurality of frequency bands in a wireless communication system, the base station comprising:

a transceiver; and

a controller coupled with the transceiver and configured to;

generate first system information including first information indicating a first frequency band supported by a cell and a list of at least one second information indicating at least one second frequency band supported by the cell,

transmit the first system information to a terminal,

generate second system information including uplink frequency information, first spectrum emission information corresponding to the first information and a list of at least one second spectrum emission information corresponding to the at least one second information, and

transmit the second system information to the terminal,

wherein an uplink frequency offset and a lower limit of an uplink frequency are determined based on the first information if the first frequency band is not supported and the at least one second frequency band is supported by the terminal, and

wherein the uplink frequency offset and the lower limit of the uplink frequency are used for identifying an uplink carrier frequency.

5. The base station of claim 4, wherein the uplink carrier frequency is identified based on the uplink frequency information included in the second system information, the uplink frequency offset and the lower limit of the uplink carrier frequency.

6. The base station of claim 4, wherein the at least one second spectrum emission information of the second system information is listed in a same order of the at least one second information supported by the cell based on the first system information.

7. A method for supporting multiple frequency bands by a terminal in a wireless communication system, the method comprising:

receiving, from a base station, first system information including first information indicating a first frequency band supported by a cell and a list of at least one second information indicating at least one second frequency band supported by the cell;

receiving, from the base station, second system information including uplink frequency information, first spectrum emission information corresponding to the first information and a list of at least one second spectrum emission information corresponding to the at least one second information; and

applying a frequency band, indicated by first listed information supported by the terminal from the list of the at least one second information, to access the cell if the first frequency band is not supported by the terminal,

wherein an uplink frequency offset and a lower limit of an uplink frequency are determined based on the first information if the first frequency band is not supported and the at least one second frequency band is supported by the terminal, and

wherein the uplink frequency offset and the lower limit of the uplink frequency are used for identifying an uplink carrier frequency.

8. The method of claim 7, further comprising:

selecting, if the at least one second information indicated by the first system information includes multiple frequency bands supported by the terminal, a frequency band indicated first among the multiple frequency bands supported by the terminal as the frequency band to access.

9. The method of claim 7, further comprising:

determining uplink (UL) transmission power according to the second spectrum emission information corresponding to the at least one second information on which the terminal determines to access.

10. The method of claim 7, wherein the uplink carrier frequency is identified based on the uplink frequency information included in the second system information, the uplink frequency offset and the lower limit of the uplink carrier frequency.

11. The method of claim 7, wherein the at least one second spectrum emission information of the second system information is listed in a same order of the at least one second information supported by the cell based on the first system information.

12. The method of claim 7, further comprising:

determining whether the at least one second information indicated by the first system information includes one or more frequency bands supported by the terminal.

13. The method of claim 7, wherein the access is attempted if the first information or the at least one second information indicated by the first system information includes the one or more frequency bands supported by the terminal.

14. A terminal for supporting a plurality of frequency bands in a wireless communication system, the terminal comprising:

a transceiver; and

a controller coupled with the transceiver and configured to;

receive, from a base station, first system information including first information indicating a first frequency band supported by a cell and a list of at least one second information indicating at least one second frequency band supported by the cell,

receive, from the base station, second system information including uplink frequency information, first spectrum emission information corresponding to the first information and a list of at least one second spectrum emission information corresponding to the at least one second information, and

apply a frequency band, indicated by first listed information supported by the terminal from the list of the at least one second information, to access the cell if the first frequency band is not supported by the terminal,

wherein an uplink frequency offset and a lower limit of an uplink frequency are determined based on the first information if the first frequency band is not supported and the at least one second frequency band is supported by the terminal, and

wherein the uplink frequency offset and the lower limit of the uplink frequency are used for identifying an uplink carrier frequency.

15. The terminal of claim 14, wherein the controller is further configured to select, if the at least one second information indicated by the first system information includes multiple frequency bands supported by the terminal, a frequency band indicated first among the multiple frequency bands supported by the terminal as the frequency band to access.

16. The terminal of claim 14, wherein the controller is further configured to determine uplink (UL) transmission power according to the second spectrum emission information corresponding to the at least one second information on which the terminal determines to access.

17. The terminal of claim 14, wherein the uplink carrier frequency is identified based on the uplink frequency information included in the second system information, the uplink frequency offset and the lower limit of the uplink carrier frequency.

18. The terminal of claim 14, wherein the at least one second spectrum emission information of the second system information is listed in a same order of the at least one second information supported by the cell based on the first system information.

19. The terminal of claim 14, wherein the access is attempted if the first information or the at least one second information indicated by the first system information includes the one or more frequency bands supported by the terminal.

20. The terminal of claim 14, wherein the controller is further configured to determine whether the at least one second information indicated by the first system information includes one or more frequency bands supported by the terminal.