Channel allocation notifying method, communication method, and communication apparatus

A channel allocation notifying method with which a communication apparatus in a communication system allocates a communication channel to a terminal belonging to the communication apparatus and notifies the communication channel to the terminal, the channel allocation notifying method comprising:

• a number-of-channel calculating step of calculating number of communication channels necessary for a communication with the terminal by using type and volume of data to be transmitted;
• a channel allocating step including
• allocating a single communication channel to the terminal based on quality information of a communication line between the communication apparatus and the terminal when calculated number of communication channels is one, and
• allocating more than one communication channels to the terminal based on the quality information when the calculated number of communication channels is more than one;
• and
• an allocation information generating step including
• generating allocation information for notifying an allocated communication channel to the terminal based on a virtual channel that is set in advance as a unit of channel by combining a plurality of consecutive communication channels, and
• transmitting the allocation information to the terminal,
• wherein the allocation information includes
• a notification type identification hit that indicates a notification type between a notification by a communication channel number and a notification by the virtual channel, and
• a channel bit that indicates a value corresponding to a communication channel number when the notification type is the notification by the communication channel number, and an allocation status of a communication channel in each virtual channel when the notification type is the notification by the virtual channel, and
• the allocation information generating step further includes
• setting the notification type identification hit based on the number of the communication channels allocated at the channel allocating step,
• setting, when the notification type is the notification by the communication channel number, a value corresponding to the communication channel number as the channel bit,
• determining, when the notification type is the notification by the virtual channel and when a channel allocation is performed to all communication channels in the virtual channel, that the virtual channel is allocated with a communication channel, and
• setting a value indicating an allocation of a communication channel to the channel bit of the virtual channel.

A channel allocation notifying method with which a communication apparatus in a communication system allocates a communication channel to a terminal belonging to the communication apparatus and notifies the communication channel to the terminal, the channel allocation notifying method comprising:

• a number-of-channel calculating step of calculating number of communication channels necessary for a communication with the terminal by using type and volume of data to be transmitted;
• a channel allocating step including
• allocating a single communication channel to the terminal based on quality information of a communication line between the communication apparatus and the terminal when calculated number of communication channels is one, and
• allocating more than one communication channels to the terminal based on the quality information when the calculated number of communication channels is more than one;
• and
• an allocation information generating step including
• generating allocation information for notifying an allocated communication channel to the terminal based on a virtual channel that is set in advance as a unit of channel by combining a plurality of consecutive communication channels, and
• transmitting the allocation information to the terminal, setting the virtual channel by combining two consecutive communication channels,
• wherein the allocation information includes
• an allocation channel count identification bit that indicates the number of communication channels allocated at the channel allocating step in each virtual channel,
• a channel bit that indicates an allocation status of a communication channel in each virtual channel, and
• a determining bit that indicates which of the two communication channels is allocated, and
• the allocation information generating step further includes
• determining, when the number of communication channels allocated at the channel allocating step is one, that a virtual channel including the communication channel is allocated with a communication channel,
• setting a value indicating an allocation of a communication channel to the channel bit of the virtual channel, and
• setting a value indicating which of the communication channels is allocated to the determining bit.

A communication method between a communication apparatus in a communication system and a terminal belonging to the communication apparatus when the communication apparatus allocates a communication channel to the terminal and notifies the communication channel to the terminal, the communication method comprising:

• a number-of-channel calculating step including the communication apparatus calculating number of communication channels necessary for a communication with the terminal by using type and volume of data to be transmitted;
• a channel allocating step including the communication apparatus allocating a single communication channel to the terminal based on quality information of a communication line between the communication apparatus and the terminal when calculated number of communication channels is one, and the communication apparatus allocating more than one communication channels to the terminal based on the quality information when the calculated number of communication channels is more than one;
• an allocation information generating step including the communication apparatus generating allocation information for notifying an allocated communication channel to the terminal based on a virtual channel that is set in advance as a unit of channel by combining a plurality of consecutive communication channels, and the communication apparatus transmitting the allocation information to the terminal;
• and
• an allocated channel calculating step including the terminal obtaining a communication channel allocated to the terminal by performing a reverse procedure to an allocation information generating process on received allocation information.