Transmitting method and apparatus, and sending power controlling method

• US 6,230,022 B1
• Filed: 12/23/1998
• Issued: 05/08/2001
• Est. Priority Date: 12/27/1997
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sakoda, Kazuyuki, Suzuki, Mitsuhiro
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Taylor, Barry W
• Application Number:
  US09/219,844
• Time in Patent Office: 867 Days
• Field of Search: 455/522, 455/13.4, 455/63, 455/69, 455/115, 455/116, 455/126, 455/127, 455/450, 455/464, 455/509, 455/513, 370/210
• US Class Current: 455/522
• CPC Class Codes: H04W 52/24 using SIR [Signal to Interference Ratio] or other wireless path parameters

Abstract

In a transmitting method, it is possible to avoid influences of adjacent-channel interference to perform communication satisfactorily. In the case of performing transmission with a previously set sending power, the transmission is performed with the set sending power with respect to a channel having the largest sending power. With respect to a channel having the next largest sending power, if its adjacent channel is the determined channel, the transmission is performed such that the sending power is corrected on the basis of the sending power of the determined channel. Thereby, it is possible to prevent the signal-to-interference wave power ratio C/I of the channel from deteriorating due to the leakage signal (interference wave) from the adjacent channel. Thus, it is possible to avoid the influences of adjacent-channel interference to thereby perform communication satisfactorily.

Claims

1. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals via the plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signals among said plural channels, the sending power of said determined channel is determined to be set to said previously set sending power to perform transmission and, with respect to a noticed channel having a next largest sending power for said transmission signals, if the determined channel having said sending power determined exists adjacent to the noticed channel, said previously set sending power is corrected based on the sending power of the determined channel to perform the transmission.

2. The transmitting method according to claim 1, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power previously set to said noticed channel.

3. The transmitting method according to claim 2, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said noticed channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said noticed channel is determined to be set to said previously set sending power.

4. The transmitting method according to claim 3, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

5. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals via the plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signals among said plural channels, the sending power is determined to be set to said previously set sending power to perform transmission and, with respect to a channel adjacent to said determined channel having said sending power determined, said previously set sending power is corrected based on the sending power of the determined channel.

6. The transmitting method according to claim 5, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power previously set to said adjacent channel.

7. The transmitting method according to claim 6, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said adjacent channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said adjacent channel is determined to be set to said previously set sending power.

8. The transmitting method according to claim 7, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

9. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals based on multi-carriers, on plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signals among said plural channels, the sending power is determined to be set to said previously set sending power to perform transmission and, with respect to a noticed channel having a next largest sending power for said transmission signals, if the determined channel having said sending power determined exists adjacent to the noticed channel, said previously set sending power is corrected based on the sending power of the determined channel to perform the transmission.

10. The transmitting method according to claim 9, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power previously set to said noticed channel.

11. The transmitting method according to claim 10, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said noticed channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said noticed channel is determined to be set to said previously set sending power.

12. The transmitting method according to claim 11, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

13. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals based on multi-carriers on the plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signals among said plural channels, the sending power is determined to be set to said previously set sending power to perform transmission and, with respect to a channel adjacent to said determined channel having the sending power determined, said previously set sending power is corrected based on the sending power of the determined channel to perform the transmission.

14. The transmitting method according to claim 13, wherein

at the time of correcting said sending power, it is judged whether a correction is performed, based on a power ratio of the sending power of said determined channel to said sending power previously set to said adjacent channel.

15. The transmitting method according to claim 14, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said adjacent channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said adjacent channel is determined to be set to said previously set sending power.

16. The transmitting method according to claim 15, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

17. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals based on time division, on the plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signals among said plural channels, the sending power is determined to be set to said previously set sending power to perform transmission and, with respect to a noticed channel having a next larger sending power for said transmission signal, if said determined channel having the sending power determined exists adjacent to the noticed channel, said previously set sending power is corrected based on the sending power of the determined channel to perform the transmission.

18. The transmitting method according to claim 17, wherein

at a time of correcting said sending power, it is judged whether a correction is performed, based on a power ratio of the sending power of said determined channel to said sending power previously set to said noticed channel.

19. The transmitting method according to claim 18, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said noticed channel is corrected and, if said power ratio is smaller than said threshold value, the sending power of said noticed channel is determined to be set to said previously set sending power.

20. The transmitting method according to claim 19, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

21. A transmitting method, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals based on time division on the plural channels with a previously set sending power,

wherein, with respect to a determined channel having a largest sending power for said transmission signal among said plural channels, the sending power is determined to be set to said previously set sending power to perform transmission and, with respect to a channel adjacent to said determined channel having the sending power determined, said previously set sending power is corrected based on the sending power of the determined channel to perform the transmission.

22. The transmitting method according to claim 21, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power previously set to said adjacent channel.

23. The transmitting method according to claim 22, wherein

if said power ratio is larger than a stated threshold value, said sending power previously set to said adjacent channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said adjacent channel is determined to be set to said previously set sending power.

24. The transmitting method according to claim 23, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said previously set sending power.

25. A sending power controlling method in a transmitting apparatus, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals via the plural channels with sending power set based on power controlling data delivered from communication terminal units,

wherein, with respect to a determined channel having a largest sending power for said transmission signal among said plural channels, the sending power is determined to be set to said sending power set and, with respect to a noticed channel having a next larger sending power for said transmission signals, if said determined channel having the sending power determined exists adjacent to the noticed channel, said sending power set is corrected based on the sending power of the determined channel.

26. The sending power controlling method according to claim 25, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power set to said noticed channel.

27. The sending power controlling method according to claim 26, wherein

if said power ratio is larger than a stated threshold value, said sending power set to said noticed channel is corrected and, if said power ratio is smaller than said threshold value, the sending power of said noticed channel is determined to be set to said set sending power.

28. The sending power controlling method according to claim 27, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said set sending power.

29. A sending power controlling method in a transmitting apparatus, comprising the steps of:

forming plural channels in a frequency direction; and

transmitting transmission signals on the plural channels with sending power set based on power controlling data delivered from communication terminal units,

wherein, with respect to a determined channel having a largest sending power of said transmission signal among said plural channels, the sending power is determined to be set to said sending power set and, with respect to a channel adjacent to said determined channel having the sending power determined, said set sending power is corrected based on the sending power of the determined channel.

30. The sending power controlling method according to claim 29, wherein

at a time of correcting said sending power, it is judged whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power set to said adjacent channel.

31. The sending power controlling method according to claim 30, wherein

if said power ratio is larger than a stated threshold value, said sending power set to said adjacent channel is corrected and, if said power ratio is smaller than said stated threshold value, the sending power of said adjacent channel is determined to be set to said set sending power.

32. The sending power controlling method according to claim 31, wherein

at a time of correcting said sending power, the correction is performed by one of increasing and lowering said set sending power.

33. A transmitting apparatus for forming plural channels in a frequency direction and for transmitting transmission signals on the plural channels with sending power set based on power controlling data delivered from communication terminal units, said transmitting apparatus comprising:

receiving means for receiving said power controlling data delivered from said communication terminal units;

controlling means for setting the sending power of said transmission signals based on said power controlling data;

transmitting means for transmitting said transmission signals; and

power correcting means for determining to set the sending power to said set sending power with respect to a determined channel having a largest sending power for said transmission signals among said plural channels and, with respect to a noticed channel having a next larger sending power for said transmission signals, if said determined channel having the sending power determined exists adjacent to the noticed channel, for correcting said set sending power based on the sending power of the determined channel.

34. The transmitting apparatus according to claim 33, wherein

at a time of correcting said sending power, said power correcting means judges whether a correction is performed based on a power ratio of the sending power of said determined channel to said sending power set to said noticed channel.

35. The transmitting apparatus according to claim 34, wherein

if said power ratio is larger than a stated threshold value, said power correcting means corrects said sending power set to said noticed channel and, if said power ratio is smaller than said stated threshold value, said power correcting means determines to set the sending power of said noticed channel to said set sending power.

36. The transmitting apparatus according to claim 35, wherein

at a time of correcting said sending power, said power correcting means performs the correction by one of increasing and lowering said set sending power.

37. A transmitting apparatus for forming plural channels in a frequency direction and for transmitting transmission signals via the plural channels with sending power set based on power controlling data delivered from communication terminal units, said transmitting apparatus comprising:

receiving means for receiving said power controlling data delivered from said communication terminal units;

controlling means for setting the sending power of said transmission signals based on said power controlling data;

transmitting means for transmitting said transmission signals; and

power correcting means for determining to set the sending power to said set sending power with respect to a determined channel having a largest sending power for said transmission signals among said plural channels and, with respect to a channel adjacent to said determined channel having the sending power determined, for correcting said set sending power based on the sending power of the determined channel.

38. The transmitting apparatus according to claim 37, wherein

at a time of correcting said sending power, said power correcting means judges whether the correction is performed based on a power ratio of the sending power of said determined channel to said sending power set to said adjacent channel.

39. The transmitting apparatus according to claim 38, wherein

if said power ratio is larger than the stated threshold value, said power correcting means corrects said sending power set to said adjacent channel and, if said power ratio is smaller than said stated threshold value, said power correcting means determines to set the sending power of said adjacent channel to said set sending power.

40. The transmitting apparatus according to claim 39, wherein

at a time of correcting said sending power, said power correcting means performs the correction by one of increasing and lowering said set sending power.