Communication device, communication system, and communication method performing communication using a plurality of signals having different frequencies

• US 20070206625A1
• Filed: 09/15/2006
• Published: 09/06/2007
• Est. Priority Date: 03/01/2006
• Status: Active Grant

• Current Assignee: Sumitomo Electric Networks, Inc. (Sumitomo Corporation)
• Original Assignee: Sumitomo Electric Networks, Inc. (Sumitomo Corporation)
• Inventors: Maeda, Junichi
• Granted Patent: US 8,249,092 B2
• Time in Patent Office: Days
• US Class Current: 370/437
• CPC Class Codes: H04L 5/0044 allocation of payload

Abstract

A communication device includes: a reception unit receiving communication signals having different frequencies, where the communication signals include logic channels, from another communication device; a measurement unit measuring line states of the received communication signals; a communication signal allocation unit allocating one or more communication signals to each of the logic channels; a margin setting unit setting a margin value for each logic channel and deciding the margin value set for the corresponding logic channel as a margin value of the communication signal; a communication speed decision unit deciding a communication speed of each of the communication signals such that an error rate of each of the communication signals is less than a prescribed value in line states degraded by the margin value of the communication signal from the measured line states; and a transmission unit notifying the other communication device of an allocation result of the communication signal and the decided communication speed.

Claims

1. A communication device comprising:

a reception unit receiving communication signals having different frequencies, where said communication signals include logic channels, from another communication device;

a measurement unit measuring line states of said received communication signals;

a communication signal allocation unit allocating one or more of said communication signals to each of said logic channels;

a margin setting unit setting a margin value for each of said logic channels and deciding the margin value set for said logic channel corresponding to said communication signal as a margin value of said communication signal;

a communication speed decision unit deciding a communication speed of each of said communication signals such that an error rate of each of said communication signals is less than a prescribed value in line states degraded by the margin value of said communication signal from said measured line states; and

a transmission unit notifying said another communication device of an allocation result of said communication signal and said decided communication speed.

2. The communication device according to claim 1, wherein said communication signal allocation unit allocates one or more of said communication signals to each of said logic channels based on said measured line states and said set margin value of the logic channels.

3. The communication device according to claim 1, wherein

said measurement unit measures a signal-to-noise ratio of said received communication signals, and

said communication signal allocation unit sorts said communication signals in increasing order of said signal-to-noise ratio and allocates said sorted communication signals to said logic channels in increasing order of said margin value.

4. A communication device comprising:

a transmission unit transmitting communication signals having different frequencies, where said communication signals include logic channels, to another communication device;

a reception unit obtaining line states of said communication signals measured by said another communication device from said another communication device;

a communication signal allocation unit allocating one or more of said communication signals to each of said logic channels;

a margin setting unit setting a margin value for each of said logic channels and deciding the margin value set for said logic channel corresponding to said communication signal as a margin value of said communication signal; and

a communication speed decision unit deciding a communication speed of each of said communication signals such that an error rate of each of said communication signals received by said another communication device is less than a prescribed value in line states degraded by the margin value of said communication signal from said obtained line states, wherein

said transmission unit transmits said communication signals to said another communication device at said decided communication speed.

5. The communication device according to claim 4, wherein said communication signal allocation unit allocates one or more of said communication signals to each of said logic channels based on said measured line states and said set margin value of the logic channels.

6. The communication device according to claim 4, wherein

said measurement unit measures a signal-to-noise ratio of said received communication signals, and

said communication signal allocation unit sorts said communication signals in increasing order of said signal-to-noise ratio and allocates said sorted communication signals to said logic channels in increasing order of said margin value.

7. A communication system comprising a first communication device and a second communication device,

said first communication device including

a transmission unit transmitting communication signals having different frequencies to said second communication device,

said second communication device including

a reception unit receiving said communication signals from said first communication device,

a measurement unit measuring line states of said received communication signals,

a communication signal allocation unit allocating one or more of said communication signals to each of said logic channels,

a margin setting unit setting a margin value for each of said logic channels and deciding the margin value set for said logic channel corresponding to said communication signal as a margin value of said communication signal,

a communication speed decision unit deciding a communication speed of each of said communication signals such that an error rate of each of said communication signals is less than a prescribed value in line states degraded by the margin value of said communication signal from said measured line states, and

a transmission unit notifying said first communication device of an allocation result of said communication signal and said decided communication speed, wherein

said transmission unit in said first communication device transmits said communication signals to said second communication device at said communication speed as notified.

8. A communication method in a communication system including a first communication device and a second communication device, comprising:

a step of said first communication device transmitting communication signals having different frequencies to said second communication device;

a step of said second communication device measuring line states of communication signals received from said first communication device;

a step of said second communication device allocating one or more of said communication signals to each of said logic channels and setting a margin value for each of said logic channels to decide the margin value set for said logic channel corresponding to said communication signal as a margin value of said communication signal;

a step of said second communication device deciding a communication speed of each of said communication signals such that an error rate of each of said communication signals is less than a prescribed value in line states degraded by the margin value of said communication signal from said measured line states;

a step of said second communication device notifying said first communication device of an allocation result of said communication signal and said decided communication speed; and

a transmission step of said first communication device transmitting said communication signals to said second communication device at said communication speed as notified.

9. The communication method according to claim 8, wherein in said transmission step, said first communication device sets the presence or absence of an interleaving process and an interleave depth for each of said logic channels, performs an interleaving process for said logic channels based on said setting, and transmits communication signals having different frequencies, where said communication signals include logic channels, subjected to said interleaving process to said second communication device at said communication speed as notified.