METHOD FOR TRANSMITTING AND RECEIVING RANDOM ACCESS CHANNEL SIGNAL IN WIRELESS COMMUNICATION SYSTEM

• US 20160192400A1
• Filed: 11/23/2015
• Published: 06/30/2016
• Est. Priority Date: 12/30/2014
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: SOHN, Kyung Yeol, PARK, Youn Ok
• Application Number:
  US14/949,168
• Publication Number:
  US 20160192400A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/0695 using beam selection
• CPC Class Codes: H04B 7/088 using beam selection
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access

Abstract

Provided is a method of transmitting and receiving a signal in a wireless communication. The method of transmitting and receiving a signal in a wireless communication includes: transmitting a transmission beam to a terminal in an area which exists within a preset cluster; receiving a random access channel signal including a random access code mapped to the cluster; and detecting the random access code by using the random access channel signal.

Claims

1. A method of transmitting and receiving a signal in a wireless communication, the method comprising:

transmitting a transmission beam to a terminal in an area which exists within a preset cluster;

receiving a random access channel signal including a random access code mapped to the cluster; and

detecting the random access code by using the random access channel signal.

2. The method of claim 1, wherein a plurality of the random access code are mapped to the cluster.

3. The method of claim 1, wherein the transmission beam includes information on a beam ID identifying the transmitted beam, the beam ID and the random access code are mapped, and the beam ID is transmitted through a synchronization signal or a reference signal of the transmission beam.

4. The method of claim 1, wherein the transmission beam which is transmitted to the terminal is divided in a cluster unit, and a plurality of transmission beams are transmitted into the cluster.

5. The method of claim 1, wherein information on the cluster is shared between a base station and the terminal or is transmitted from the base station to the terminal through a system message.

6. The method of claim 1, further comprising:

measuring a strength of the random access channel signal; and

comparing the strength of the random access channel signal with a threshold value to implement a signal diversity.

7. The method of claim 6, wherein the signal diversity is implemented through a maximum ratio combining (MRC) or an equal gain combining (EGC).

8. A method of transmitting and receiving a signal in a wireless communication, the method comprising:

detecting a beam ID of a transmission beam having the strongest signal strength among received transmission beams of a base station;

selecting a random access code mapped to a cluster corresponding to the beam ID; and

transmitting a random access channel signal including the selected random access code to a base station.

9. The method of claim 8, wherein a plurality of the random access code are mapped to the cluster.

10. The method of claim 8, wherein the beam ID and the random access code are mapped.

11. The method of claim 8, wherein the beam ID is transmitted through a synchronization signal or a reference signal of the transmission beam.