Method and device for receiving a multimedia broadcast multicast service in a mobile communication system

• US 9,521,008 B2
• Filed: 10/10/2012
• Issued: 12/13/2016
• Est. Priority Date: 10/10/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Soeng-Hun, Jeong, Kyeong-In
• Primary Examiner(s): NGUYEN, MINH TRANG T
• Application Number:
  US14/347,854
• Publication Number:
  US 20140233452A1
• Time in Patent Office: 1,525 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 12/1881 with schedule organisation, e.g. priority, sequence management
• CPC Class Codes: H04L 12/189 in combination with wireless systems selective distribution or broadcast in wireless communication networks H04W4/06
• CPC Class Codes: H04W 36/0007 for multicast or broadcast services, e.g. MBMS multicast or broadcast application services H04W4/06; resource management for broadcast services H04W72/30; connection management for selective distribution or broadcast H04W76/40
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 36/22 for handling the traffic
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 76/40 for selective distribution or broadcast
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The present invention relates to a method and device for receiving a multimedia broadcast multicast service (MBMS) in a mobile communication system. The method for receiving the MBMS of a terminal in the mobile communication system according to an embodiment of the present invention is characterized in that it includes: determining whether service area ID (SAI) information on a serving cell is broadcast during the MBMS; receiving the SAI information on the serving cell when it is determined that the SAI information is broadcast; determining, by using the received SAI information of the serving cell, whether an SAI of the MBMS matches the SAI of the serving cell; and changing the cell reselection priority of the frequency of the serving cell to the highest priority if it is determined that the SAI of the MBMS matches the SAI of the serving cell. According to the present invention, it is possible to efficiently receive MBMS services by enabling a terminal to select a proper frequency or cell when an MBMS service of interest starts.

Claims

1. A method for receiving multimedia broadcast multicast service (MBMS) by a terminal in a mobile communication system, the method comprising:

obtaining MBMS information including at least one MBMS service area identifier (SAI);

receiving a service area identifier (SAI) of a serving cell through a system information block (SIB);

determining whether the SAI of the serving cell corresponds to an MBMS SAI included in the MBMS information;

configuring a cell reselection priority of a frequency corresponding to the SAI of the serving cell to a highest priority if the SAI of the serving cell corresponds to the MBMS SAI included in the MBMS information, and

performing cell reselection based on the cell reselection priority in a radio resource control (RRC) idle state.

2. The method of claim 1, further comprising:

configuring a cell reselection priority of a frequency included in the MBMS information to the highest priority if the SAI of the serving cell is not transmitted.

3. The method of claim 2, further comprising waiting, if the frequency in the MBMS information is absent, until the serving cell changes.

4. The method of claim 1, further comprising waiting, if the SAI of the serving cell does not correspond to the MBMS SAI included in the MBMS information, until the serving cell changes.

5. A terminal for receiving multimedia broadcast multicast service (MBMS) in a mobile communication system, the terminal comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

obtain MBMS information including at least one MBMS service area identifier (SAI),

receive a service area identifier (SAI) of a serving cell through a system information block (SIB),

determine whether the SAI of the serving cell corresponds to an MBMS SAI included in the MBMS information,

configure a cell reselection priority of a frequency corresponding to the SAI of the serving cell to a highest priority if the SAI of the serving cell corresponds to the MBMS SAI included in the MBMS information, and

perform cell reselection based on the cell reselection priority in a radio resource control (RRC) idle state.

6. The terminal of claim 5, wherein the controller is further configured to configure a cell reselection priority of a frequency included in the MBMS information to the highest priority if the SAI of the serving cell is not transmitted.

7. The terminal of claim 6, wherein the controller is further configured to wait, if the frequency in the MBMS information is absent, until the serving cell changes.

8. The terminal of claim 5, wherein the controller is further configured to wait, if the SAI of the serving cell does not correspond to the MBMS SAI included in the MBMS information, until the serving cell changes.