# US 2019/0357124 A1 · Data Connection Establishment Method and Terminal Device

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- Number: US 2019/0357124 A1
- Document ID: US20190357124A1
- Status: Published application
- Kind: A1
- Application number: 16/337,182
- Filed: 2016-11-02
- Published: 2019-11-21
- Earliest claimed: 2016-09-27
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Yanhong Jia
- Web page: https://patentgrep.com/patent/US20190357124A1

## CPC

- H04W 48/16: Discovering, processing access restriction or access information
- H04W 8/18: Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W 48/18: Selecting a network or a communication service
- H04W 76/10: Connection setup
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A data connection establishment method and a terminal device, where the method includes receiving, by an application processor (AP), a switch-on instruction, sending, by the AP, a network searching instruction to a communications processor (CP), where the network searching instruction instructs the CP to search for a network, receiving, by the AP, subscriber identity module (SIM) card status change information and network status change information from the CP, and sending, by the AP, a data connection establishment instruction to the CP based on the SIM card status change information and the network status change information, where the data connection establishment instruction instructs the CP to establish a data connection to the found network.

## Claims

### Claim at position 1

-20. (canceled)

### Claim 21

A data connection establishment method implemented by an application processor (AP ), wherein the method comprises:
receiving a switch-on instruction;
sending a network searching instruction to a communications processor (CP), wherein the network searching instruction instructs the CP to search for a network;
receiving subscriber identification module (SIM) card status change information and network status change information from the CP; and
sending a data connection establishment instruction to the CP based on the SIM card status change information and the network status change information, wherein the data connection establishment instruction instructs the CP to establish a data connection to a found network.

### Claim 22 (depends on 21)

The data connection establishment method of claim 21, wherein the network searching instruction instructs the CP to register a data service with the found network based on information about a SIM card, and wherein sending the data connection establishment instruction to the CP comprises:
determining a mobile country code (MCC) and a mobile network code (MNC) of the SIM card based on the SIM card status change information;
determining, based on the network status change information, that the CP successfully registered the data service; and
sending the data connection establishment instruction to the CP based on the MCC and the MNC, wherein the data connection establishment instruction instructs the CP to establish the data connection to the found network.

### Claim 23 (depends on 21)

The data connection establishment method of claim 21, wherein after sending the network searching instruction to the CP, the data connection establishment method further comprises receiving radio status information from sent the CP, and wherein the radio status information indicates that the CP has started to search for the network.

### Claim 24 (depends on 22)

The data connection establishment method of claim 22, wherein after sending the network searching instruction to the CP, the data connection establishment method further comprises receiving radio status information from the CP, and wherein the radio status information indicates that the CP has started to search for the network.

### Claim 25 (depends on 22)

The data connection establishment method of claim 22, wherein determining the MCC and the MNC of the SIM card comprises:
sending, to the CP based on the SIM card status change information, an instruction for querying the information about the SIM card;
receiving the information from the CP; and
obtaining the MCC and the MNC of the SIM card from the information.

### Claim 26 (depends on 23)

The date connection establishment method of claim 23, wherein determining the MCC and MNC of the SIM card comprises:
sending, to the CP based on the SIM card status change information, an instruction for querying information about the SIM card;
receiving the information from the CP; and
obtaining the MCC and the MNC of the SIM card from the information.

### Claim 27 (depends on 22)

The data connection establishment method of claim 22, wherein determining, that the data service of the CP is attached comprises:
sending, to the CP based on the network status change information, an instruction for querying network registration information;
receiving the network registration information from the CP; and determining, based on the network registration information, that the data service of the CP is attached.

### Claim 28 (depends on 25)

The data connection establishment method of claim 25, further comprising obtaining, from the information about the SIM card, a serial number, a local phone number, a voice mailbox identifier, a call transfer identifier, and operator name information of the SIM card wherein sending the data connection establishment instruction to the CP comprises creating an access point name (APN) based on the MCC and the MNC such that the CP establishes a data connection to the found network based on the APN, and wherein obtaining the serial number, the local phone number, the voice mailbox identifier, the call transfer identifier, and the operator name information of the SIM card and creating the APN based on the MCC and the MNC are performed in parallel.

### Claim 29

A terminal device, comprising:
a communications bus:
a communication processor (CP); and
an application processor (AP) coupled to the CP using the communications bus and configured to:
receive a switch-on instruction; and
send a network searching instruction to the CP,
wherein the CP is configured to search for a network based on the network searching instruction,
wherein the AP is further configured to:
receive subscriber identification module (SIM) card status change information and network status change information from the CP; and
send a data connection establishment instruction to the CP based on the SIM card status change information and the network status change information, and
wherein the CP is configured to establish a data connection to a found network.

### Claim 30 (depends on 29)

The terminal device of claim 29, wherein the CP is further configured to register a data service with the found network based on the network searching instruction and information about a SIM card, wherein the AP is further configured to:
determine a mobile country code (MCC) and a mobile network code (MNC) of the SIM card based on the SIM card status change information:
determine, based on the network status change information, that the CP successfully registered the PS: and
send the data connection establishment instruction to the CP based on the MCC and the MNC, and
wherein the CP is further configured to establish a data connection to the found network based on the data connection establishment instruction.

### Claim 31 (depends on 29)

The terminal device of claim 29, wherein the AP is further configured to receive radio status information from the CP, and wherein the radio status information indicates that the CP has started to search for the network.

### Claim 32 (depends on 30)

The terminal device of claim 30, wherein the AP is further configured to receive radio status information from the CP, and wherein the radio status information indicates that the CP has started to search for the network.

### Claim 33 (depends on 30)

The terminal device of claim 30, wherein the AP is further configured to:
send, to the CP based on the SIM card status change information, an instruction for querying information about the SIM card;
receive the information from the CP: and
obtain the MCC and the MNC of the SIM card from the information.

### Claim 34 (depends on 31)

The terminal device of claim 31, wherein the AP is further configured to:
send, to the CP based on the SIM card status change information, an instruction for querying information about the SIM card;
receive the information from the CP; and
obtain the MCC and the MNC of the SIM card from the information.

### Claim 35 (depends on 30)

The terminal device of claim 30, wherein the AP is further configured to:
send, to the CP based on the network status change information, an instruction for querying network registration information;
receive the network registration information from the CP: and
determine, based on the network registration information, that the data service of the CP is attached.

### Claim 36 (depends on 31)

The terminal device of claim 31, wherein the AP is further configured to:
send, to the CP based on the network status change information, an instruction for querying network registration information;
receive the network registration information from the CP: and
determine, based on the network registration information, that the data service of the CP is attached.

### Claim 37 (depends on 33)

The terminal device of claim 33, wherein the AP is further configured to:
obtain, from information about the SIM card, a serial number, a local phone number, a voice mailbox identifier, a call transfer identifier, and operator name information of the SIM card; and
create an access point name (APN) based on the MCC and the MNC such that the CP establishes a data connection to the found network based on the APN, wherein obtaining the serial number, the local phone number, the voice mailbox identifier, the call transfer identifier, and the operator name information of the SIM card and creating the APN based on the MCC and the MNC are performed in parallel.

### Claim 38

A terminal device, comprising:
a communications bus;
a communications processor (CP); and
an application processor (AP) coupled to the CP using the communications bus and configured to:
receive a switch-on instruction;
obtain a mobile country code (MCC) and a mobile network code (MNC) of a subscriber identity module (SIM) card from information about the SIM card;
obtain, from the information about the SIM card, a serial number, a local phone number, a voice mailbox identifier, a call transfer identifier, and operator name information of the SIM card;
create, in parallel with the obtaining, an access point name (APN) based on the MCC and the MNC; and
send a data connection establishment instruction to the CP such that the CP establishes a data connection to a found network based on the APN.

### Claim 39 (depends on 38)

The terminal device of claim 38, wherein after the AP receives the switch-on instruction, the AP is further configured to:
send a network searching instruction to the CP, wherein the network searching instruction instructs the CP to search for a network;
receive SIM card status change information and network status change information from the CP;
send, to the CP based on the SIM card status change information, an instruction for querying the information;
receive the information from the CP;
obtain the MCC and the MNC of the SIM card from the information; and
send the data connection establishment instruction to the CP after determining, based on the network status change information, that the CP successfully registered a data service.