# US 2017/0288752 A1 · Method and apparatus for selecting antenna for dual connectivity in wireless communication system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2017/0288752 A1
- Document ID: US20170288752A1
- Status: Published application
- Kind: A1
- Application number: 15/507,213
- Filed: 2015-08-31
- Published: 2017-10-05
- Earliest claimed: 2014-08-29
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Yunjung YI; Joonkui AHN
- Web page: https://patentgrep.com/patent/US20170288752A1

## CPC

- H04B 7/0608: {Antenna selection according to transmission parameters}
- H04B 7/026: Co-operative diversity, e.g. using fixed or mobile stations as relays
- H04B 7/0404: the mobile station comprising multiple antennas, e.g. to provide uplink diversity
- H04W 76/15: Setup of multiple wireless link connections
- H04W 8/22: Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W 36/00692: {using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO] (allocation of physical resources in CoMP or in CA H04L5/0035)}
- H04W 76/10: Connection setup
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A method and apparatus for configuring UE transmit antenna selection in a wireless communication system is provided. A user equipment (UE) receiving a configuration of UE transmit antenna selection from a network, and determines whether to apply the configuration of UE transmit antenna selection according to a configuration of dual connectivity. When the configuration of dual connectivity is not received from the network, it is determined to apply the configuration UE transmit antenna selection.

## Claims

### Claim 1

A method for configuring, by a user equipment (UE), UE transmit antenna selection in a wireless communication system, the method comprising:
receiving a configuration of UE transmit antenna selection from a network; and
determining whether to apply the configuration of UE transmit antenna selection according to a configuration of dual connectivity.

### Claim 2 (depends on 1)

The method of claim 1, wherein it is determined to apply the configuration UE transmit antenna selection when the configuration of dual connectivity is not received from the network.

### Claim 3 (depends on 2)

The method of claim 2, further comprising performing UE transmit antenna selection.

### Claim 4 (depends on 1)

The method of claim 1, wherein it is not determined to apply the configuration UE transmit antenna selection when the configuration of dual connectivity is received from the network.

### Claim 5 (depends on 4)

The method of claim 4, wherein the UE is configured with both a master cell group (MCG) and a secondary cell group (SCG).

### Claim 6 (depends on 4)

The method of claim 4, further comprising performing transmission by using antenna port 0.

### Claim 7 (depends on 1)

The method of claim 1, wherein the configuration of UE transmit antenna selection is received via higher layer.

### Claim 8

A user equipment (UE) comprising:
a memory;
a transceiver; and
a processor coupled to the memory and the transceiver, and configured to:
receive a configuration of UE transmit antenna selection from a network; and
determine whether to apply the configuration of UE transmit antenna selection according to a configuration of dual connectivity.

### Claim 9 (depends on 8)

The UE of claim 8, wherein it is determined to apply the configuration UE transmit antenna selection when the configuration of dual connectivity is not received from the network.

### Claim 10 (depends on 9)

The UE of claim 9, wherein the processor is further configured to perform UE transmit antenna selection.

### Claim 11 (depends on 8)

The UE of claim 8, wherein it is not determined to apply the configuration UE transmit antenna selection when the configuration of dual connectivity is received from the network.

### Claim 12 (depends on 11)

The UE of claim 11, wherein the UE is configured with both a master cell group (MCG) and a secondary cell group (SCG).

### Claim 13 (depends on 11)

The UE of claim 11, wherein the processor is further configured to perform transmission by using antenna port 0.

### Claim 14 (depends on 8)

The UE of claim 8, wherein the configuration of UE transmit antenna selection is received via higher layer.