Network selection and random access method and apparatus of machine-type communication user equipment in mobile communication system

• US 10,694,456 B2
• Filed: 10/22/2018
• Issued: 06/23/2020
• Est. Priority Date: 03/19/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jang, Jaehyuk, Ng, Boon Loong, Van Lieshout, Gert-Jan, Van Der Velde, Himke, Jeong, Kyeongin
• Primary Examiner(s): Phan, Tri H
• Application Number:
  US16/166,756
• Publication Number:
  US 20190059049A1
• Time in Patent Office: 610 Days
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A network selection, a random access method, and an apparatus of a Machine Type Communication (MTC) User Equipment (UE) for use in a Long Term Evolution (LTE) are provided. A cell selection method of an MTC terminal of the present disclosure includes receiving a message from a base station forming a cell, determining whether the message includes an MTC supportability indicator, and barring, when the message includes no MTC supportability indicator, scanning a frequency used in communication with the base station during a determined period.

Claims

1. A method performed by a terminal in a wireless communication system, the method comprising:

receiving a first message including system information from a base station associated with a cell;

determining whether the system information includes allowance information indicating that a category 0 terminal is allowed to access the cell;

barring a selection of the cell, in case that the system information does not include the allowance information;

transmitting a random access preamble to the base station, in case that the system information includes the allowance information;

receiving a random access response (RAR) message from the base station as a response to the random access preamble;

transmitting a second message for requesting an establishment of radio resource control (RRC) connection on common control channel (CCCH) to the base station as a response to the RAR message; and

receiving a third message for establishing the RRC connection as a response to the second message,

wherein information indicating that the CCCH is for the category 0 terminal is transmitted with the second message to the base station, and

wherein the category 0 terminal is characterized as having a maximum data rate of 1000 bits within a subframe.

2. The method of claim 1, wherein the first message comprises a system information block (SIB).

3. The method of claim 1, wherein the information indicating that the CCCH is for the category 0 terminal is contained in a medium access control (MAC) header.

4. The method of claim 1, wherein the information indicating that the CCCH is for the category 0 terminal includes a logical channel identifier (LCID) set to a determined value and the determined value is different from 00000.

5. The method of claim 1, wherein the third message is received as fragmented form of the third message or removed form of part of the third message.

6. A terminal in a wireless communication system, the terminal comprising:

a transceiver; and

a controller configured to;

control the transceiver to receive a first message including system information from a base station associated with a cell,

determine whether the system information includes allowance information indicating that a category 0 terminal is allowed to access the cell,

bar a selection of the cell, in case that the system information does not include the allowance information,

control the transceiver to transmit a random access preamble to the base station, in case that the system information includes the allowance information,

control the transceiver to receive a random access response (RAR) message from the base station as a response to the random access preamble,

control the transceiver to transmit a second message for requesting an establishment of radio resource control (RRC) connection on common control channel (CCCH) to the base station as a response to the RAR message, and

control the transceiver to receive a third message for establishing the RRC connection as a response to the second message,

wherein information indicating that the CCCH is for the category 0 terminal is transmitted with the second message to the base station, and

wherein the category 0 terminal is characterized as having a maximum data rate of 1000 bits within a subframe.

7. The terminal of claim 6, wherein the first message comprises a system information block (SIB).

8. The terminal of claim 6, wherein the information indicating that the CCCH is for the category 0 terminal is contained in a medium access control (MAC) header.

9. The terminal of claim 6, wherein the information indicating that the CCCH is for the category 0 terminal includes a logical channel identifier (LCID) set to a determined value and the determined value is different from 00000.

10. The terminal of claim 6, wherein the third message is received as fragmented form of the third message or removed form of part of the third message.

11. A method performed by a base station in a wireless communication system, the method comprising:

determining whether to allow an access of a category 0 terminal to a cell associated with the base station;

generating a first message including allowance information indicating that the category 0 terminal is allowed to access to the cell, in case that the base station allows the access of the category 0 terminal to the cell;

broadcasting the first message;

receiving a random access preamble from a terminal;

transmitting a random access response (RAR) message for the terminal as a response to the random access preamble;

receiving, from the terminal, a second message for requesting an establishment of radio resource control (RRC) connection on common control channel (CCCH) as a response to the RAR message, the second message including information indicating that the CCCH is for the category 0 terminal;

identifying that the terminal is the category 0 terminal based on the information indicating that the CCCH is for the category 0 terminal; and

transmitting, to the terminal, a third message for establishing the RRC connection as a response to the second message,

wherein the category 0 terminal is characterized as having a maximum data rate of 1000 bits within a subframe.

12. The method of claim 11, wherein the first message comprises a system information block (SIB).

13. The method of claim 11, wherein the information indicating that the CCCH is for category 0 terminal is contained in a medium access control (MAC) header.

14. The method of claim 11, wherein the information indicating that the CCCH is for the category 0 terminal includes a logical channel identifier (LCID) set to a determined value and the determined value is different from 00000.

15. A base station in a wireless communication system, the base station comprising:

a transceiver; and

a controller configured to;

determine whether to allow an access of a category 0 terminal to a cell associated with the base station,

generate a first message including allowance information indicating that the category 0 terminal is allowed to access the cell, in case that the base station allows the access of the category 0 terminal to the cell,

control the transceiver to broadcast the first message,

control the transceiver to receive a random access preamble from a terminal,

control the transceiver to transmit a random access response (RAR) message for the terminal as a response to the random access preamble,

control the transceiver to receive, from the terminal, a second message for requesting an establishment of radio resource control (RRC) connection on common control channel (CCCH) as a response to the RAR message, the second message including information indicating that the CCCH is for the category 0 terminal,

identify that the terminal is the category 0 terminal based on information indicating that the CCCH is for the category 0 terminal, and

control the transceiver to transmit, to the terminal, a third message for establishing the RRC connection as a response to the second message,

wherein the category 0 terminal is characterized as having a maximum data rate of 1000 bits within a subframe.

16. The base station of claim 15, wherein the first message comprises a system information block (SIB).

17. The base station of claim 15, wherein the information indicating that the CCCH is for the category 0 terminal is contained in a medium access control (MAC) header.

18. The base station of claim 15, wherein the information indicating that the CCCH is for the category 0 terminal includes a logical channel identifier (LCID) set to a determined value and the determined value is different from 00000.