METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL IN INTER-VEHICLE COMMUNICATION SYSTEM

• US 20180159606A1
• Filed: 01/27/2016
• Published: 06/07/2018
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Heejin, KANG, Jiwon, KIM, Kitae, LEE, Kilbom, PARK, Kungmin
• Granted Patent: US 10,784,936 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/024 Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/06 at the transmitting station
• CPC Class Codes: H04B 7/061 using feedback from receiving side
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/08 at the receiving station
• CPC Class Codes: H04L 5/0042 intra-user or intra-terminal allocation
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 84/005 Moving wireless networks

Abstract

The present specification relates to a method for transmitting and receiving a signal to/from a base station by a terminal in an inter-vehicle communication system, wherein the method for transmitting a signal may comprise: a step for receiving a reference signal; a step for feeding-back channel information on the basis of the received reference signal; and a step for receiving data on the basis of the channel information, and wherein the terminal includes a plurality of distributed antenna units (DUs), and if selection of whether each of the plurality of DUs is activated is possible, the channel information may include DU index set information and channel state information (CSI).

Claims

1. A method of transmitting and receiving a signal from a user equipment (UE) to a base station, the method comprising:

receiving a reference signal;

feeding back channel information based on the received reference signal;

receiving data based on the channel information,

wherein the UE includes a plurality of distributed antenna units (DUs), and

wherein the channel information includes DU index set information and channel state information (CSI) when activation of each of the plurality of DUs is selectable.

2. The method according to claim 1, wherein the DU index set information includes DU index information set based on activation of each of the plurality of DUs.

3. The method according to claim 2, wherein the DU index information is set based on the number of DUs included in the UE and locations of the DUs.

4. The method according to claim 3, wherein the index set information includes 2̂

N pieces of DU index information when the number of DUs included in the UE is N.

5. The method according to claim 3, wherein, the DU index set information includes only the DU index information selectable by the number of activated DUs when the number of activated DUs among the DUs included in the UE is determined.

6. The method according to claim 1, wherein the data is received by the base station based on the DU index set included in the channel information and effective channel information acquired through the channel state information.

7. The method according to claim 1, wherein each of the DUs included in the UE includes a plurality of antenna ports.

8. The method according to claim 7, wherein the DU index set information includes information on a mapping relationship between the plurality of antenna ports and the plurality of DUs.

9. The method according to claim 1, further comprising feeding back DU activation information.

10. The method according to claim 9, wherein the DU activation information includes the number of DUs capable of being simultaneously activated and deactivated and combination information based on a radio frequency (RF) structure.

11. The method according to claim 1, wherein, the first type of UE feeds the channel information back to the base station and receives DU selection control information from the base station when the UE is a first type of UE.

12. The method according to claim 11, wherein, the second type of UE feeds the channel information back to neighboring UEs and receives channel information from the neighboring UEs to control DU selection when the UE is a second type of UE.

13. The method according to claim 12, wherein the first type of UE and the second type of UE coexist in one vehicular communication system.

14. A user equipment (UE) apparatus for transmitting and receiving a signal, the UE comprising:

a reception module configured to receive information from an external device;

a transmission module configured to transmit information to an external device; and

a processor configured to control the reception module and the transmission module,

wherein the processor is further configured to;

receives a reference signal using the reception module;

feeds back channel information based on the received reference signal using the transmission module; and

receives data based on the channel information using the reception module, and

wherein the UE includes a plurality of distributed antenna units (DUs), and

wherein the channel information includes DU index set information and channel state information (CSI) when activation of each of the plurality of DUs is selectable.

15. The UE apparatus according to claim 14, wherein the DU index set information includes DU index information set based on activation of each of the plurality of DUs.