Method and apparatus for transmitting and receiving common channel information in wireless communication system

• US 9,948,439 B2
• Filed: 10/24/2013
• Issued: 04/17/2018
• Est. Priority Date: 10/24/2012
• Status: Expired

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kwak, Yongjun, Kim, Younsun, Ji, Hyoungju, Lee, Juho, Lee, Hyojin, Cho, Joonyoung
• Primary Examiner(s): Hsu, Alpus H
• Application Number:
  US14/062,231
• Publication Number:
  US 20140112220A1
• Time in Patent Office: 1,636 Days
• CPC Class Codes: H04B 7/0695 using beam selection
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Methods and apparatus are provided for transmission and reception of common channel information in a mobile communication system using multi-antenna-based beamforming. A number of beams to be used for transmission to a terminal is determined at a base station. The common channel information is generated corresponding to the number of beams. The common channel information is transmitted from the base station to the terminal through one of the beams.

Claims

1. A method by a base station of a mobile communication system using multi-antenna-based, beamforming, the method comprising:

identifying a plurality of beams to be used for transmission; and

transmitting, to each terminal in a cell of the base station, common channel information through each of the plurality of the beams,

wherein the common channel information is information to be commonly applied to terminals which belong to the cell of the base station,

wherein the common channel information comprises a synchronization channel including a first synchronization signal and a second synchronization signal, and

wherein the common channel information transmitted through each of the plurality of beams to each terminal is included in different subframes in a frame and the first synchronization signal includes a beam-specific code, which is a synchronization channel-specific code determined differently depending on the beam, such that each terminal identifies a subframe carrying the first synchronization signal based on the beam-specific code for acquiring frame timing.

2. The method of claim 1, wherein the common channel information further comprises a broadcast channel.

3. The method of claim 2, wherein the broadcast channel comprises a master information block as cell-specific information, the master information block comprising scheduling information on beam-specific information including system information on a certain beam, the beam-specific information comprising at least one of uplink random access information, power control information, Time Division Duplex (TDD) downlink/uplink configuration information.

4. A method by a terminal in a mobile communication system using multi-antenna-based beamforming, the method comprising:

receiving common channel information transmitted through a beam by a base station, wherein the common channel information is included in a certain subframe in a frame and comprises a synchronization channel including a first synchronization signal and a second synchronization signal, the first synchronization signal including a beam-specific code, which is a synchronization channel-specific code determined differently depending on the beam,

identifying the subframe carrying the first synchronization signal based on the beam-specific code;

acquiring frame timing based on a result of the identification of the subframe; and

receiving a signal transmitted by the base station based on the frame timing,

wherein the common channel information is transmitted through each of a plurality of beams, and the common channel information transmitted through each of the plurality of beams is included in different subframes in a frame,

wherein the common channel information is information to be commonly applied to terminals which belong to a cell of the base station.

5. The method of claim 4, wherein the common channel information further comprises a broadcast channel.

6. The method of claim 5, wherein the broadcast channel comprises a master information block as cell-specific information, the master information block comprising scheduling information on beam-specific information including system information on a certain beam, the beam-specific information comprising at least one of uplink random access information, power control information, Time Division Duplex (TDD) downlink/uplink configuration information.

7. A base station in a mobile communication system using multi-antenna-based beamforming, the base station comprising:

a transceiver configured to transmit and receive signals; and

a controller configured to identify a plurality of beams to be used for transmission, and control the transceiver to transmit, to each terminal in a cell of the base station, common channel information through each of the plurality of the beams,

wherein the common channel information is information to be commonly applied to terminals which belong to the cell of the base station,

wherein the common channel information comprises a synchronization channel including a first synchronization signal and a second synchronization signal, and

wherein the common channel information transmitted through each of the plurality of beams to each terminal is included in different subframes in a frame and the first synchronization signal includes a beam-specific code, which is a synchronization channel-specific code determined differently depending on the beam, such that each terminal identifies a subframe carrying the first synchronization signal based on the beam-specific code for acquiring frame timing.

8. The base station of claim 7, wherein the common channel information further comprises a broadcast channel.

9. The base station of claim 8, wherein the broadcast channel comprises a master information block as cell-specific information, the master information block comprising scheduling information on beam-specific information including system information on a certain beam, the beam-specific information comprising at least one of uplink random access information, power control information, Time Division Duplex (TDD) downlink/uplink configuration information.

10. A terminal in a mobile communication system using multi-antenna-based beamforming, the terminal comprising:

a transceiver configured to transmit and receive signals to and from a base station; and

a controller configured to control the transceiver to;

receive common channel information transmitted through a beam by a base station, wherein the common channel information is included in a certain subframe in a frame and comprises a synchronization channel including a first synchronization signal and a second synchronization signal, the first synchronization signal including a beam-specific code, which is a synchronization channel-specific code determined differently depending on the beam,

identify the subframe carrying the first synchronization signal based on the beam-specific code,

acquire frame timing based on a result of the identification of the subframe, and

receive a signal transmitted by the base station based on the frame timing,

wherein the common channel information is transmitted through each of a plurality of beams and the common channel information transmitted through each of the plurality of beams is included in different subframes in a frame,

wherein the common channel information is information to be commonly applied to terminals which belong to a cell of the base station.

11. The terminal of claim 10, wherein the common channel information further comprises a broadcast channel.

12. The terminal of claim 11, wherein the broadcast channel comprises a master information block as cell-specific information, the master information block comprising scheduling information on beam-specific information including system information on a certain beam, the beam-specific information comprising at least one of uplink random access information, power control information, Time Division Duplex (TDD) downlink/uplink configuration information.