Communication control method of controlling data flow from internet protocol network to mobile terminal

• US 6,603,975 B1
• Filed: 02/28/2000
• Issued: 08/05/2003
• Est. Priority Date: 04/02/1999
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Inouchi, Hidenori, Ohishi, Takumi
• Primary Examiner(s): Le, Thanh Cong
• Assistant Examiner(s): Lei, Tsuleun R
• Application Number:
  US09/514,322
• Time in Patent Office: 1,254 Days
• Field of Search: 455/450, 455/451, 455/452, 455/453, 455/405, 455/464, 455/465, 455/468, 455/433, 370/465, 370/468
• US Class Current: 455/450
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 43/06 Generation of reports
• CPC Class Codes: H04L 43/0811 by checking connectivity
• CPC Class Codes: H04L 43/0829 Packet loss
• CPC Class Codes: H04L 43/0876 Network utilisation, e.g. volume of load or congestion level
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/263 Rate modification at the source after receiving feedback
• CPC Class Codes: H04L 47/30 in combination with information about buffer occupancy at either end or at transit nodes
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/762 triggered by the network
• CPC Class Codes: H04L 47/767 after changing the attachment point, e.g. after hand-off
• CPC Class Codes: H04L 47/822 Collecting or measuring resource availability data
• CPC Class Codes: H04L 47/824 Applicable to portable or mobile terminals
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/163 In-band adaptation of TCP data exchange; In-band control procedures
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 28/02 Traffic management, e.g. flow control or congestion control
• CPC Class Codes: H04W 28/18 : Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/0453 : Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 8/04 : Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 80/06 : Transport layer protocols, e.g. TCP [Transport Control Protocol] over wireless transmission control protocol/Internet protocol [TCP/IP] or user datagram protocol [UDP] H04L69/16
• CPC Class Codes: H04W 92/02 : Inter-networking arrangements

Abstract

A traffic controller determines flow control parameters regarding a packet transfer in the downward direction based on traffic amount information for each application measured by a traffic monitor, communication quality information in the radio zone collected by a wireless base station for communication with a mobile terminal, and communication quality information of each application collected by a subscriber exchange and notifies the flow control parameters to the subscriber exchange.

Claims

1. A communication control method in a network connected to both a wireless base station for communicating with a mobile wireless via a radio communication channel and an Internet protocol network, comprising the steps of:

monitoring a traffic amount of data transmitted from the Internet protocol network to the mobile terminal for each of a plurality of data flows;

classifying the traffic amount into a retransmission traffic amount and an effective traffic amount for each data flow;

collecting communication quality information for each data flow; and

changing a bandwidth between the Internet protocol network and the wireless base station based on the communication quality information and the traffic amount as classified into the retransmission traffic amount and the effective traffic amount, when the monitored traffic amount has changed.

2. A communication control method according to claim 1, further comprising the step of:

monitoring the bandwidth between the Internet protocol network and the wireless base station unchanged if the monitored traffic amount has increased due to a degradation in communication as indicated by the communication quality information.

3. A communication control method according to claim 1, further comprising the step of:

monitoring the bandwidth between the Internet protocol network and the wireless base station unchanged if the retransmission traffic amount has increased.