Title:
ATM COMMUNICATION NETWORK
Document Type and Number:
Japanese Patent JP3229841
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ATM communication network which can flexibly deal with the increase of the traffic and also can satisfy the requested quality of every service class by using a means to convert the cell received from a local area network LAN into an optical cell that defines the wavelength set according to its destination as a carrier and then to transfer the optical cell to a center network.
SOLUTION: A center network 50 includes the optical wavelength cross connection devices 3-1 to 3-4 as the optical wavelength routing means where the output routes of optical cells to be inputted are set according to the carrier wavelengths of these cells. The cells of high and lower priority service classes are mixed in the cells sent from the LAN 2-1 to 2-4, and each of access control parts 1-1 to 1-4 has two buffers to store the cells of each service class. Then a controller part allocates the wavelengths to the cells which are read out of both buffers, and the cells of every service class are transferred to the network 50.
Inventors:
Masayoshi Nabeshima
Naoaki Yamanaka
Haruhisa Hasegawa
Naoaki Yamanaka
Haruhisa Hasegawa
Application Number:
JP20636997A
Publication Date:
November 19, 2001
Filing Date:
July 31, 1997
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04J14/00; H04B10/00; H04B10/27; H04J14/02; H04L12/28; H04L12/66; H04L12/701; H04L12/801; H04L12/911; H04Q3/00; (IPC1-7): H04L12/56; H04B10/02; H04J14/00; H04J14/02
Other References:
１９９７年電子情報通信学会総合大会 Ｂ−６−２４（１９９７年３月６日）
電子情報通信学会技術研究報告 ＳＳＥ９４−４７（１９９４年５月２６日）
電子情報通信学会技術研究報告 ＳＳＥ９４−４７（１９９４年５月２６日）
Attorney, Agent or Firm:
Naotaka Ide (1 person outside)