Method and apparatus for supporting voice service through radio channel in mobile telecommunication system

A method for supporting a voice service through a radio channel in a mobile communication system, the method comprising the steps of:

• determining at least one of a voice codec mode, byte-alignment information about a byte-alignment scheme of a voice packet, a requested bandwidth and a codec type used for processing a voice call in a procedure of establishing a packet call between a terminal and a core network;
• receiving from the terminal a packet data protocol context establishing message comprising at least one of the codec type, the byte-alignment information and the voice codec mode in order to establish a bearer for the packet call;
• forming a radio access bearer establishing message to establish a bearer relating to a packet data protocol context;
• and
• obtaining a payload size set according to the codec type, the byte-alignment information and the voice codec mode and transmitting a radio access bearer establishing message to an access network, which provides a service to the terminal, by inserting the payload size set into the radio access bearer establishing message.

A method for supporting a voice service through a radio channel in a mobile communication system, the method comprising the steps of:

• receiving from a core network, a radio access bearer establishing message comprising at least one of a payload size set determined between a terminal and the core network based on a voice codec mode, byte-alignment information about a byte-alignment scheme of a voice packet, a requested bandwidth and a codec type used for processing a voice call;
• establishing a radio access bearer according to the radio access bearer establishing message and forming a radio bearer establishing message comprising radio bearer configuration information based on the payload size set included in the radio access bearer establishing message;
• and
• determining packet sizes usable in a radio link according to the payload size set included in the radio access bearer establishing message and transmitting the radio bearer establishing message to the terminal by inserting a radio link packet size set into the radio bearer establishing message, the radio link packet size set representing sizes of packets of the established radio link.

A device for supporting a voice service through a radio channel in a mobile communication system, the device comprising:

• a user equipment for determining at least one of a voice codec mode, byte-alignment information about a byte-alignment scheme of a voice packet, a requested bandwidth and a codec type used for processing a voice call when the voice call is established and transmitting a packet data protocol context establishing message comprising at least one of the codec type, the byte-alignment information and the voice codec;
• a core network for obtaining a payload size set based on the codec type, the byte-alignment information and the voice codec mode by receiving the packet data protocol context establishing message from the user equipment and transmitting a radio bearer establishing message including the payload size set;
• and
• an access network for determining sizes of radio link packets usable in a radio link based on the payload size set by receiving the radio bearer establishing message from the core network and transmitting to the user equipment a radio bearer establishing message comprising a radio link packet size set representing the determined sizes of the radio link packets.

A method for supporting a voice service through a radio channel in a mobile communication system, the method comprising the steps of:

• determining codec information for processing a voice call in a procedure of establishing a call between a terminal and a core network;
• transmitting to the terminal from the core network, a packet data protocol context establishing message comprising the codec information and a packetization interval during which packet data is generated according to the codec information;
• obtaining by the core network, the packetization interval based on the packet data protocol context establishing message and transmitting a radio access bearer establishing message comprising the packetization interval to an access network which provides a service to the terminal;
• and
• determining by the access network, a transmission time interval of a radio link used for transmitting the packet data based on the packetization interval and transmitting a radio bearer establishing message comprising the transmission time interval of the radio link to the terminal.

A device for supporting a voice service through a radio channel in a mobile communication system, the device comprising:

• a user equipment for determining codec information for processing a voice call and transmitting to a core network a packet data protocol context establishing message comprising the codec information and a packetization interval during which packet data is generated according to the codec information when establishing a call with the core network;
• the core network for obtaining the packetization interval from the packet data protocol context establishing message and transmitting a radio bearer establishing message including the packetization interval to an access network which provides a service to the user equipment;
• and
• the access network for determining a transmission time interval of a radio link used for transmitting the packet data based on the packetization interval and transmitting a radio bearer establishing message comprising the transmission time interval to the user equipment.