Title:
双方向通信システム
Document Type and Number:
Japanese Patent JP3617858
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction of system performance and to maintain high stability even when a communication controller continuously transmitting a signal exists or a high traffic load is inputted to a system. SOLUTION: A central information communication controller 1 detects a packet reception success rate on an up trasmission line, and when the success rate is smaller than a threshold α, generates transmission rule level information for reducing the transmission probability of a communication controller and notifies the generated information to respective communication controllers 2a to 2c through a down transmission line. Each of the controllers 2a to 2c generates a random number based upon the notified transmission rule level information and judges whether transmission is to be started or not by referring to the random number. At the time of judging the postponement of transmission, each communication controller waits until the reception of 'transmission permission' from the controller 1, and at the time of receiving the 'transmission permission', starts the transmission of user data.
Inventors:
Koichiro Kamura
Hiroshi Kobayashi
Hiroshi Kobayashi
Application Number:
JP18437295A
Publication Date:
February 09, 2005
Filing Date:
July 20, 1995
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H04L12/44; H04L12/70; H04L12/801; H04L12/825; H04L12/911; H04L29/02; H04N7/173; H04N21/647; (IPC1-7): H04L12/56; H04L12/44; H04L29/02; H04N7/173
Domestic Patent References:
| JP5095358A | ||||
| JP1055937A | ||||
| JP4090234A | ||||
| JP55082546A | ||||
| JP1282982A |
Attorney, Agent or Firm:
Takehiko Suzue