METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR

• US 20180139651A1
• Filed: 05/23/2016
• Published: 05/17/2018
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Taehun, CHUN, Sungduck, RYU, Jinsook, KIM, Laeyoung, KIM, Jaehyun, PARK, Sangmin
• Granted Patent: US 10,321,358 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04W 28/065 using assembly or disassembly of packets
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

A method for transmitting and receiving data in a wireless communication system, and a device therefor are disclosed. Particularly, a method for transmitting downlink data in a packet data network gateway (P-GW) in a wireless communication system can comprise the steps of: receiving, from an application server, downlink data in which an Internet protocol (IP) header including an IP address of a terminal is encapsulated; removing the IP header from the downlink data; and transmitting, to a serving gateway (S-GW), the downlink data from which the IP header is removed through a bearer identified by the IP address of the terminal, so as to transmit, to the terminal, the downlink data from which the IP header is removed.

Claims

1. A method for transmitting downlink data by a packet data network gateway (P-GW) in a wireless communication system, the method comprising:

receiving, from an application server, downlink data in which an Internet protocol (IP) header including an IP address of a UE has been encapsulated;

removing the IP header from the downlink data; and

transmitting the downlink data from which the IP header has been removed to a serving gateway (S-GW) through a bearer identified by the IP address of the UE in order to transmit the downlink data from which the IP header has been removed to the UE,

wherein, when the downlink data is data for non-IP PDN connection, the IP header is removed from the downlink data.

2. The method of claim 1, wherein the IP address of the UE identifies packet data network (PDN) connection of the UE.

4. The method of claim 1, wherein, when a single bearer is assigned per non-IP PDN connection of the UE, the downlink data is transmitted to the UE on a single bearer assigned to the non-IP PDN connection.

5. The method of claim 1, wherein the IP address of the UE is assigned by the P-GW but is not provided to the UE.

6. The method of claim 1, wherein a commonly used group bearer is configured per group comprising one or more UEs,

wherein the bearer is a group bearer of a group to which the UE belongs.

7. The method of claim 6, wherein one group bearer is configured per group or the same group bearer is configured for two or more groups.

8. The method of claim 6, wherein, when the same group bearer is configured for two or more groups, groups matched to the group bearer are identical over the entire section of a network node or different for sections between network nodes.

9. The method of claim 6, wherein information indicating whether the UE is a UE to which the group bearer is applied is transmitted from the UE to a network or pre-configured in subscription information of the UE.

10. The method of claim 6, wherein the group comprises one or more UEs for which the same default access point name (APN) is configured or one or more UEs requiring the same quality of service (QoS).

11. The method of claim 6, wherein all UEs belonging to the same eNB are configured to the same group.

12. The method of claim 6, wherein the group bearer maintains an activated state all the time, or is released from the activated state when deactivated for a predetermined time and activated after the release.

3. (canceled)

13-18. -18. (canceled)

19. A packet data network gateway (P-GW) apparatus for transmitting downlink data in a wireless communication system, the apparatus comprising:

a communication module for transmitting and receiving signals; and

a processor controlling the communication module,

wherein the processor is configured to;

receive, from an application server, downlink data in which an Internet protocol (IP) header including an IP address of a UE has been encapsulated;

remove the IP header from the downlink data; and

transmit the downlink data from which the IP header has been removed to a serving gateway (S-GW) through a bearer identified by the IP address of the UE in order to transmit the downlink data from which the IP header has been removed to the UE,

wherein, when the downlink data is data for non-IP PDN connection, the IP header is removed from the downlink data.

20. The apparatus of claim 19, wherein the IP address of the UE identifies packet data network (PDN) connection of the UE.

21. The apparatus of claim 19, wherein the IP address of the UE is assigned by the P-GW but is not provided to the UE.