System and method for multicast and broadcast service

• US 9,179,268 B2
• Filed: 01/24/2013
• Issued: 11/03/2015
• Est. Priority Date: 12/13/2007
• Status: Expired due to Fees

• Current Assignee: Posco ICT Company Limited (Posco)
• Original Assignee: Posco ICT Company Limited (Posco)
• Inventors: Sung, Su-Lyun, Lee, Dong-Hyun
• Primary Examiner(s): YEUNG, MANG HANG
• Application Number:
  US13/749,524
• Publication Number:
  US 20130170425A1
• Time in Patent Office: 1,013 Days
• Field of Search: 370/312, 370/329, 370/331, 370/341, 370/432, 455/436
• US Class Current: 1/1
• CPC Class Codes: H04L 63/102 Entity profiles
• CPC Class Codes: H04L 63/162 at the data link layer
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04W 12/08 Access security
• 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 4/08 User group management
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

The present invention relates to a system and method for providing MultiCast and BroadCast Service (MCBCS). According to the present invention, the MCBCS system and method supports session start and data path registration procedures, join and leave procedure for providing the MCBCS with static or dynamic multicast service schemes, and supports procedures for providing to mobile stations operating in idle mode. Accordingly, the present invention enables effectively implementing the MCBCS in a wireless communication system, particularly in WiMAX system, and provides the MCBCS according to the mobile stations operating in idle mode.

Claims

1. A method for providing Multicast and Broadcast Service (MCBCS) in a wireless communication system, comprising:

performing a session procedure including receiving a session start request message from an MCBCS server if there is an MBS data to send, transmitting data path request messages to base stations providing the MCBCS to a mobile station and transmitting a session start response message after data path establishment;

receiving, at an anchor Access Service Network Gateway (ASN GW), a join initiate message from a mobile station to be provided with an MCBCS based on service announce information;

transmitting a join request message to a serving ASN GW upon receipt of the join initiate message at the anchor ASN GW;

receiving the join request message and transmitting an access request message to a server; and

requesting, at a corresponding one of the base stations, to perform a dynamic service addition procedure with the mobile station based on the join request message,

wherein the session start request message includes a multicast connection identifier, a service flow identifier, resource parameters between the base stations and the mobile station, and a MAP information of a MCBCS frame.

2. The method of claim 1, wherein the join request message includes a multicast connection identifier, a service flow identifier, and an Internet Protocol multicast address.

3. The method of claim 1, wherein the dynamic service addition procedure comprises transmitting a dynamic service addition request message to the mobile station, receiving a dynamic service addition response message from the mobile station according to the dynamic service addition request message, and transmitting a dynamic service addition acknowledgement message to the mobile station according to the dynamic service addition response message.

4. The method of claim 3, wherein the dynamic service addition request message includes a multicast connection identifier, a service content identifier, and a service zone identifier corresponding to the MCBCS to be provided to the mobile station.

5. The method of claim 1, wherein the join initiate message includes an Internet Protocol multicast address of an MCBCS content.

6. A method for providing Multicast and Broadcast service (MCBCS) in a wireless communication system, comprising:

performing a session procedure including receiving a session start request message from an MCBCS server if there is an MBS data to send, transmitting data path request messages to base stations providing the MCBCS to a mobile station and transmitting a session start response message after data path establishment;

receiving, at an anchor access service network gateway (ASN GW), a join initiate message from a mobile station and transmitting a join request message to a serving ASN GW;

checking, at the anchor ASN GW, if the mobile station is a first mobile station within a multicast and broadcast service (MBS) zone upon receipt of the join request message, an MCBCS content, and transmitting a resource reservation request according to the MCBCS content to a corresponding one of the base stations;

performing, at the corresponding base station, a dynamic service addition procedure with the mobile station upon receipt of the resource reservation request;

receiving, at the anchor ASN GW, a leave message from the mobile station to stop being provided with the MCBCS;

transmitting, at the anchor ASN GW, a leaving indication message to the serving ASN GW upon receipt of the leave message;

receiving, at the serving ASN GW, a leave response message and transmitting, if the mobile station is a last mobile station within an MBS Zone, a deregistration request to the corresponding base station; and

performing, at the corresponding base station, a dynamic service deletion procedure with the mobile station upon receipt of a leave request message.

7. The method of claim 6, wherein the resource reservation request messages includes a multicast connection identifier, a service flow identifier, and an Internet Protocol Multicast address corresponding to the MCBCS.

8. The method of claim 6, wherein the step of performing the dynamic service addition procedure comprises transmitting a dynamic service addition request message to the mobile station, receiving a dynamic service addition response message from the mobile station according to the dynamic service addition request message, and transmitting a dynamic service addition acknowledge message to the mobile station according to the dynamic service addition response message.

9. The method of claim 6, wherein the dynamic service addition request message includes a multicast connection identifier, a service content identifier, and a service zone identifier corresponding to the MCBCS to be provided to the mobile station.

10. The method of claim 6, wherein the join initiate message includes an Internet Protocol multicast address of the MCBCS content to be provided to the mobile station.

11. A system for supporting Multicast and Broadcast Service (MCBCS), comprising:

a mobile station, a base station, an Access Service network Gateway (ASN GW), an MCBCS server, and a policy server,

wherein the ASN GW comprises;

a proxy module for supporting an assignment function of multicast connection identifiers and radio resources, a layer 2 security function for MCBCS contents, a management function of the mobile station, resources for the MCBCS, a function of interworking with the policy server, a function of transmitting a Leave response if the mobile station is a last mobile station in a Multicast and Broadcast Service (MBS) zone, and a function of triggering a dynamic service addition procedure to the base station; and

a Data Path Function (DPF) module for supporting registration and deregistration of a dynamic MCBCS data path, and

wherein the base station supports the layer 2 security function and an MCBCS resource assignment function in a Media Access Control (MAC) layer and an MCBCS resource assignment management function in a Physical (PHY) layer, for the MCBCS contents.

12. The system of claim 11, wherein the proxy module further supports an MCBCS group management function.