Samsung Electronics Co., Ltd.

Sang-Hoon Ryu

Woo-Jae Kim

Jai-Jin Lim

Gyou-Hwan Kim

Han-Seok Kim

Jun-hwan Oh

Seongkwan Kim

Sung-Kwan Kim

An apparatus and method for dynamically allocating a multicast path in a broadband wireless access system are provided. A method for an operation of a server providing a multicast service through a wireless access network includes determining to establish multicast paths for a first Base Station (BS) and at least one neighboring BS of the first BS when a terminal receiving the multicast service enters a network through the first BS, and transmitting a control station a message of instructing to establish the multicast path for a BS not holding the multicast path among the first BS and the at least one neighboring BS of the first BS.

Apparatus and method for dynamically allocating multicast path in broadband wireless access system

An apparatus and a method for setting a group communication session using a wireless access system are provided. The method includes transmitting, at a transmission side client, a message requesting start/end of group communication to a control Push To Talk (PTT) server, transmitting, at the control PTT server, a session set/end message including a sequence number to a participating PTT server, multicasting, at the participating PTT server, a connect/disconnect request message N times for at least one reception side client, and setting/releasing, at the at least one reception side client, a session for the group communication.

Apparatus and method for preventing excessive signaling overhead while a group communication is performed in a broadband wireless access system

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Seoul, South Korea

Sang-Hoon Ryu