# US 10,772,034 B2 · System information transmission method and base station, and system information reception method and user equipment

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

- Number: US 10,772,034 B2
- Document ID: US10772034B2
- Status: Granted
- Kind: B2
- Application number: 16/086,293
- Filed: 2017-03-30
- Published: 2019-04-11
- Granted: 2020-09-08
- Earliest claimed: 2016-03-30
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Sungduck Chun; Jaehyun Kim; Taehun Kim; Hyunsook Kim; Sangmin Park; Myungjune Youn
- Web page: https://patentgrep.com/patent/US10772034B2

## CPC

- H04W 48/16: Discovering, processing access restriction or access information
- H04W 48/08: Access restriction or access information delivery, e.g. discovery data delivery (signalling during connection H04W76/00)
- H04W 48/18: Selecting a network or a communication service
- H04W 76/10: Connection setup
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 48/12: using downlink control channel
- H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A core network to which a cell of a base station can be connected may not be specified to be one. For example, a cell may be connected to an EPC, may be connected to a next-generation core network, or may be connected to both an EPC and a next-generation core network. The base station may transmit core network information relating to a core network to which the cell is connected, on the cell. A user equipment may determine whether to camp on the cell on the basis of the core network information.

## Claims

### Claim 1

A method of receiving system information by a user equipment (UE) from a base station, the method comprising:
performing a cell search;
receiving the system information on a found cell based on the cell search,
wherein the found cell is a long term evolution (LTE) cell connected to an evolved packet core (EPC), and
wherein the system information includes core network information regarding whether the found cell is connected to a next generation core network (NCN) or not; and
based on the core network information informing that the found cell is connected to the NCN:
selecting a core network type among the EPC and the NCN; and
performing an access attempt on the found cell according to the core network type,
wherein the core network type is selected by a non-access stratum (NAS) layer of the UE.

### Claim 2 (depends on 1)

The method of claim 1,
wherein the base station is a base station of evolved universal terrestrial radio access network (E-UTRAN).

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
based on the UE supporting the core network type to which the found cell is connected and having uplink data to transmit, establishing a radio resource control (RRC) connection with the base station; and
transmitting the uplink data on the found cell.

### Claim 4 (depends on 1)

The method of claim 1,
wherein the core network information is forwarded from a radio resource control (RRC) layer of the UE to the NAS layer of the UE.

### Claim 5

A user equipment (UE) for receiving system information from a base station, the UE comprising:
a transceiver, and
a processor configured to control the transceiver, the processor configured to:
perform a cell search;
control the transceiver to receive the system information on a found cell based on the cell search,
wherein the found cell is a long term evolution (LTE) cell connected to an evolved packet core (EPC), and
wherein the system information includes core network information regarding whether the found cell is connected to a next generation core network (NCN) or not; and
based on the core network information informing that the found cell is connected to the NCN:
select a core network type among the EPC and the NCN; and
perform an access attempt on the found cell according to the core network type,
wherein the core network type is selected by a non-access stratum (NAS) layer of the UE.

### Claim 6 (depends on 5)

The UE of claim 5,
wherein the base station is a base station of evolved universal terrestrial radio access network (E-UTRAN).

### Claim 7 (depends on 5)

The UE user equipment of claim 5,
wherein the processor is further configured to:
based on the UE supporting the core network to which the found cell is connected and having uplink data to transmit, establish a radio resource control (RRC) connection with the base station and control the transceiver to transmit the uplink data on the found cell.

### Claim 8 (depends on 5)

The UE of claim 5,
wherein the core network information is forwarded from a radio resource control (RRC) layer of the UE to the NAS layer of the UE.