摘要:
A radio base station apparatus in a communication system in which best effort type transmission is carried out between the radio base station apparatus and mobile terminal apparatus through a wireless channel, capable of reducing a wait time in a buffer. The radio base station apparatus (300) is provided with a determining section (308) that determines a transfer rate of data transferred from a radio network control apparatus (500), a storage section (304) that temporarily stores data transferred from the radio network control apparatus at the transfer rate, a transmission section (301) that transmits the data stored in the storage section to a mobile terminal apparatus by radio, a wait time measuring section (306) that measures a wait time of data in the storage section and a transmission rate calculation section (307) that calculates an average transmission rate of data transmitted by radio to the mobile terminal apparatus, wherein the determining section (308) regards a value obtained by multiplying the average transmission rate by a coefficient according to the wait time as the transfer rate.
摘要:
RLC processing section 106 supplies packet data requested for retransmission from a mobile terminal and new packet data not requested for retransmission to buffer 107 corresponding to data amounts controlled in HS-DSCH/FP processing section 108. Buffer 107 temporarily stores the packet data requested for retransmission and the new packet data not requested for retransmission to output at predetermined timing. HS-DSCH/FP processing section 108 detects a receivable data amount of the mobile terminal using CQI, and controls RLC processing section 106 so that the amount of data stored of packet data in buffer 107 does not exceed the receivable data amount of the mobile terminal. It is thereby possible to decrease the number of retransmissions to improve the throughput, and prevent suspension of the communication and disconnection of the channel.
摘要:
A packet communication apparatus and a packet communication method capable of suppressing decrease in overall system throughput and preventing communication from being reset or disconnected. An ACK generation section (130) generates an ACK/NACK to indicate whether or not data transmitted on the radio channel has been demodulated correctly. A channel quality measurement section (140) measures channel quality of the radio channel from an AMD-PDU received. According to the ACK/NACK generation situation and the channel quality measured, a WSN determination section (160) determines a WSN appropriate for the channel condition and outputs the WSN to a status PDU generation section (170). More specifically, the WSN determination section (160) determines the WSN, for example, according to the ratio of ACK/NACKs generated in the near past and SIR measurement values. When the status PDU generation section (170) generates a status PDU, it sets the WSN determined by the WSN determination section (160) in the WSN field.
摘要:
There is provided a mobile communication system capable of improving the throughput. In this system, a radio base station device (1022) waits for an upstream retransmission packet for a predetermined period of time before the moment when the retransmission time out expiration time has come and transmits a retransmission wait release request to a radio network control device (1031). When the radio base station device (1022) receives a retransmission wait release response instructing to stop the retransmission wait from the radio network control device (1031), it stops wait for the upstream packet retransmission. When the radio network control device (1031) has confirmed that the upstream packet has been received from another radio base station device upon reception of the retransmission wait release request, it creates the retransmission wait release response instruction stop of the retransmission wait and transmits it to the radio base station device (1022).
摘要:
Mobile terminal 100 has: operator 251 that calculates the generation interval of ACK packets based on the size of the ACK packet that is to be transmitted and the channel rate of the transmitting channel, held in controller 250; delay ACK timer 223 that repeats counting the calculated ACK packet generation interval as one period and outputs an expiration signal every time the one period expires; and data packet receiver 221 that, every time the expiration signal is input, generates an ACK packet containing the latest reception confirmation information relating to data packets received while the expiration signal was being received, and transmits the ACK packet to transmission buffer 240 via IP section 210.
摘要:
A communication apparatus wherein the function arrangement of each device is revised, thereby preventing an increase in traffic of a public network and further suppressing an increase in communication cost of the public network. In this apparatus, a control part (101), when notified of a duplication of MBMS data by RNC-c, controls a PDCP part (102), an RLC part (103) and a MAC-d part (104) so as to perform an MBMS data duplication process. The control part (101), when notified of an establishment of a communication line with a node (B), controls the PDCP part (102), RLC part (103) and MAC-d part (104) so as to establish the communication line with the node (B). The RLC part (103) duplicates, based on the control by the control part (101), the MBMS data received from the PDCP part (102). The MAC-d part (104) transmits the MBMS data as MAC processed to the node (B) via a local network between an RNC-u (100) and the node (B).
摘要:
A communication apparatus wherein the function arrangement of each device is revised, thereby preventing an increase in traffic of a public network and further suppressing an increase in communication cost of the public network. In this apparatus, a control part (101), when notified of a duplication of MBMS data by RNC-c, controls a PDCP part (102), an RLC part (103) and a MAC-d part (104) so as to perform an MBMS data duplication process. The control part (101), when notified of an establishment of a communication line with a node (B), controls the PDCP part (102), RLC part (103) and MAC-d part (104) so as to establish the communication line with the node (B). The RLC part (103) duplicates, based on the control by the control part (101), the MBMS data received from the PDCP part (102). The MAC-d part (104) transmits the MBMS data as MAC processed to the node (B) via a local network between an RNC-u (100) and the node (B).
摘要:
There is provided a control station device capable of suppressing a traffic amount by discarding packet data to be discarded by a control station device, without transmitting the packet data from the base station device to the control station device. In this device, a buffer (102) stores upstream packet data and discards it without outputting it when a predetermined time has elapsed after the storing of the upstream packet data. According to maximum wait time information, a timer management unit (106) makes an instruction to discard the upstream packet data which is to be discarded even if transmitted to an RNC, without transmitting it to the RNC (122). An alignment buffer (112) corrects the upstream packet data order inversion and discards the upstream packet data for which the maximum wait time has elapsed. A timer management unit (113) sets the maximum wait time and instructs the alignment buffer (112) to discard the upstream packet data for which the maximum wait time has elapsed.
摘要:
An access controller not requiring a large amount of resources such as a memory device and not needing to change the list of secure host devices each time the configuration of a network is changed. On receiving a DNS response through an access control section (103) of the access controller (100) a secure host list creating section (104) of the access controller registers the name of the secure host device contained in the DNS response, the IP address, and the IP address of a communication terminal which is a request of the DNS in a secure host list holding section (105) of the access controller (100) when the IP address of the host device contained in the DNS response is the one of the secure host device. The secure host list creating section (104) discards a packet when the communication terminal which is the packet sender is a normal communication terminal and when the packet address is stored in the secure host list holding section (105) and reports nonaccessiblity to the normal communication terminal.
摘要:
It is possible to perform access from a global network side to a private network side so as to realize mutual communication between the global network and the private network while maintaining security. A table setting unit (307) decides a correspondence between a private IP address and a global IP address and registers it in an address conversion table (310). The address conversion table (310) holds the private IP address and the global IP address while correlating them to each other.