Method and apparatus for discontinuously receiving packet in a mobile communication system

An apparatus for receiving a packet by a terminal in a mobile communication system including a base station providing a packet, and the terminal that discontinuously receives a packet from the base station in Discontinuous Reception (DRX) cycles each including an active period and a sleep period, the apparatus comprising:

• a receiver for receiving, from the base station, configuration information for a DRX service, including information on a DRX cycle length and information on a number of packets to be received in the DRX cycle;
• and
• a controller configured for:
• setting, as a starting point of a DRX cycle, a point at which a first packet is received from the base station by the receiver;
• controlling the receiver to receive a packet from the base station for an active period at the beginning of the starting point of the DRX cycle
• wherein the active period is determined according to whether a number of received packets is equal to the number of packets to be received in the DRX cycle, and
• wherein the DRX service includes a service having a substantially constant inter-arrival time for a packet.

A method for receiving a packet by a terminal in a mobile communication system including a base station providing a packet, and the terminal that discontinuously receives a packet from the base station in Discontinuous Reception (DRX) cycles each including an active period and a sleep period, the method comprising:

• receiving configuration information for a DRX service, including information on a DRX cycle length and information on a number of packets to be received in the DRX cycle, and length information of a transmission resource allocation period for a persistent transmission resource;
• determining whether persistent transmission resource allocation information is received from the base station for the transmission resource allocation period;
• setting, as a starting point of a DRX cycle, a point at which the persistent transmission resource allocation information is received, when the persistent transmission resource allocation information is received;
• and
• performing one of transmission of a packet to the base station and reception of a packet from the base station, using a persistent transmission resource according to the persistent transmission resource allocation information, for an active period beginning from the starting point of the DRX cycle,
• wherein the active period is determined according to whether a number of received packets is equal to the number of packets to be received in the DRX cycle, and
• wherein the DRX service includes a service having a substantially constant inter-arrival time for a packet.

An apparatus for receiving a packet by a terminal in a mobile communication system including a base station providing a packet, and the terminal that discontinuously receives a packet from the base station in Discontinuous Reception (DRX) cycles each including an active period and a sleep period, the apparatus comprising:

• a receiver for receiving configuration information for a DRX service, including information on a DRX cycle length and information on a number of packets to be received in the DRX cycle, and length information of a transmission resource allocation period for a persistent transmission resource;
• a transmitter for transmitting a packet to the base station;
• and
• a controller configured for:
• determining whether persistent transmission resource allocation information is received from the base station for the transmission resource allocation period;
• setting, as a starting point of a DRX cycle, a point at which the persistent transmission resource allocation information is received, when the persistent transmission resource allocation information is received;
• performing one of transmission of a packet to the base station and reception of a packet from the base station, using the persistent transmission resource according to the persistent transmission resource allocation information, for an active period beginning from the starting point of the DRX cycle, by controlling the receiver and the transmitter;
• wherein the active period is determined according to whether a number of received packets is equal to the number of packets to be received in the DRX cycle, and
• wherein the DRX service includes a service having a substantially constant inter-arrival time for a packet.