System and method for code division multiple access communication, and base station and terminal apparatus for same system

A terminal apparatus for a code division multiple access communication system exchanging spread spectrum information with a base station over a commonly used channel when communicating with said base station in said code division multiple access communication system, said terminal apparatus comprising:

• a randomly accessing means for randomly accessing to said base station;
• an acknowledge information receiving means for receiving plural pieces of acknowledge information in a transmission frame transmitted from said base station, said base station collectively putting acknowledge information for said terminal apparatus along with acknowledge information for other terminal apparatus in said transmission frame, and transmitting said transmission frame to said terminal apparatus when receiving an access signal from said terminal apparatus at the time of random access by said terminal apparatus to said base station;
• and
• a transmitting means for again accessing and transmitting a remaining information to said base station according to an order of said acknowledge information for the terminal apparatus of its own among said plural pieces of acknowledge information in said transmission frame received by said acknowledge information receiving means after said terminal apparatus randomly accesses to said base station if there is said remaining information to be continuously transmitted to said base station.

A code division multiple access communicating system equipped with a base station and a plurality of terminal apparatus exchanging spread spectrum information with said base station over a commonly used channel when communicating with said base station, comprising:

• said base station including:
• a receiving means for receiving an access signal from each of said plural terminal apparatus at the time of random access from each of said plural terminal apparatus;
• an acknowledge information transmitting means, for collectively putting plural pieces of acknowledge information for said plural terminal apparatus in a transmission frame, and transmitting said frame to said plural terminal apparatus when receiving means receives the access signals from said plural terminal apparatus;
• each of said plural terminal apparatus comprising;
• an acknowledge information receiving means for receiving said plural pieces of acknowledge information from said acknowledge information transmitting means of said base station;
• and
• a transmitting means for again accessing to said base station according to an order of acknowledge information for its own terminal apparatus among said plural pieces of acknowledge information received from said base station by said acknowledge information receiving means after randomly accessing to said base station when there is remaining information to be continuously transmitted to said base station, and transmitting said remaining information;
• wherein said plural terminal apparatus are classified into a first terminal apparatus for transmitting spread spectrum information obtained using either one of at least two different types of spread information to said base station, and a second terminal apparatus for transmitting spread spectrum information obtained using at least the other one of said two different types of spreading information to said base station;
• wherein said acknowledge information transmitting means of said base station separately puts said acknowledge information for each type of said spreading information, puts number information on the number of pieces of acknowledge information for said first terminal apparatus having transmitted said information obtained using said former spreading information or number information on the number of pieces of acknowledge information for said second terminal apparatus having transmitted said information obtained using said latter spreading information along with said acknowledge information in said transmission frame, and transmits said transmission frame to said plural terminal apparatus;
• and
• wherein said transmitting means of said first terminal apparatus or said second terminal apparatus transmits said remaining information according to an order of acknowledge information for its own terminal apparatus among said acknowledge information for spreading information used by its own terminal apparatus separately put in said transmission frame.

A base station for a code division multiple access communicating system exchanging spread spectrum information with a plurality of terminal apparatus over a commonly used channel, comprising:

• a receiving means for receiving an access signal from each of said plural terminal apparatus at the time of random access from each of said plural terminal apparatus;
• and
• an acknowledge information transmitting means for collectively putting plural pieces of acknowledge information for said plural terminal apparatus in a transmission frame in the order said access signals were received from said plural terminal apparatus when receiving said access signals from said plural terminal apparatus by said receiving means, and transmitting said transmission frame to said plural terminal apparatus so that said plural terminal apparatus having remaining information to be continuously transmitted to said base station again access to said base station in a predetermined order to transmit said remaining information;
• wherein said acknowledge information transmitting means puts information showing the number of terminal apparatus intending to transmit remaining information along with said acknowledge information in said transmission frame, and transmit said frame to said plural terminal apparatus.

A base station for a code division multiple access communicating system exchanging spread spectrum information with a plurality of terminal apparatus over a commonly used channel, comprising:

• a receiving means for receiving an access signal from each of said plural terminal apparatus at the time of random access from each of said plural terminal apparatus;
• and
• an acknowledge information transmitting means for collectively putting plural pieces of acknowledge information for said plural terminal apparatus in a transmission frame in the order said access signals were received from said plural terminal apparatus when receiving said access signals from said plural terminal apparatus by said receiving means, and transmitting said transmission frame to said plural terminal apparatus so that said plural terminal apparatus having remaining information to be continuously transmitted to said base station again access to said base station in a predetermined order to transmit said remaining information;
• wherein said acknowledge information transmitting means separately puts said acknowledge information for each of at least two different types of spreading information in said transmission frame, puts number information on the number of pieces of acknowledge information for first terminal apparatus having transmitted spread spectrum information obtained using one of said two different types of spreading information among said plural terminal apparatus, or number information on the number of pieces of said acknowledge information for second terminal apparatus having transmitted spread spectrum information obtained using the other one of said at least two different types of said spreading information among said plural terminal apparatus along with said acknowledge information in said transmission frame, and transmits said transmission frame to said plural terminal apparatus.

A code division multiple access communicating method in a code division multiple access communicating system comprising a base station and a plurality of terminal apparatus communicating with said base station to exchange spread spectrum information between said base station and said plural terminal apparatus over a commonly used line, a code division multiple access communicating method comprising the steps of:

• an acknowledge information transmitting step performed in said base station of collectively putting acknowledge information for said plural terminal apparatus in a transmission frame when said base station receives access signals from said plural terminal apparatus at the time of random accesses from said plural terminal apparatus, and transmitting said transmission frame to said plural terminal apparatus;
• and
• a transmitting step performed in each of said plural terminal apparatus of again accessing to said base station according to an order of acknowledge information for itself among said plural pieces of acknowledge information received from said base station put in said transmission frame after a random access to said base station if there is said remaining information to be continuously transmitted to said base station to transmit said remaining information;
• wherein said plural terminal apparatus are classified into a first terminal apparatus for transmitting spread spectrum information obtained using either one of at least two different types of spreading information to said base station, and a second terminal apparatus for transmitting spread spectrum information obtained using the other one of said at least two different types of spreading information to said base station;
• wherein said base station separately puts said acknowledge information for each type of said spreading information, puts number information on the number of pieces of said acknowledge information for said first terminal apparatus having transmitted information obtained using said former spreading information, or number information on the number of pieces of acknowledge information for said second terminal apparatus having transmitted said information obtained using said latter spreading information along with said acknowledge information in said transmission frame, and transmits said transmission frame to said plural terminal apparatus;
• and
• wherein a transmitting means of each of said first terminal apparatus or said second terminal apparatus transmits said remaining information according to an order of acknowledge information for its own apparatus among said acknowledge information for spreading information used by its own terminal apparatus separately put in said transmission frame.