Abstract
A wireless transmission device of the present invention includes n (where n is an integer of two or more) transmission antennas and a delay imparting section for delaying transmission signals supplied to the n transmission antennas by a maximum delay time (n?1)T or less based on a delay time T dependent upon a communication signal which indicates whether to transmit the transmission signals by way of frequency diversity or multiuser diversity.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 04/07/2013 | ISLD-201307-002 | HUAWEI |
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Specification Information
Specification Information
Technologies
Family Information
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| PL2280495T3 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | |||
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Technologies
Signal Processing
Product
Use Cases
Wireless communication
Services
Claim
1. A transmission control method adapted to a transmission system in which slots are assigned to chunks divided in a frequency domain and in a time domain,
said transmission control method comprising the steps of:
imparting delays to signals being supplied to a plurality of transmission antennas;
and
controlling the delays in response to using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among the plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency band width of each chunk.', 'said transmission control method comprising the steps of:', 'imparting delays to signals being supplied to a plurality of transmission antennas;', 'and', 'controlling the delays in response to using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among the plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency band width of each chunk.
2. The transmission control method according to claim 1,
wherein a directivity control is performed in the multiuser diversity for transmitting the signals.', 'wherein a directivity control is performed in the multiuser diversity for transmitting the signals.
3. The transmission control method according to claim 1,
wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.
4. The transmission control method according to claim 1,
wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.
5. The transmission control method according to claim 1,
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.
6. A transmission control method adapted to a transmission system in which slots are assigned to chunks divided in a frequency domain and in a time domain,
said transmission control method comprising the steps of:
determining whether to transmit signals using either frequency diversity or multiuser diversity based on a selection between using frequency diversity and multiuser diversity; and
controlling delays supplied to a plurality of transmission antennas in response to the determination of using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among a plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency bandwidth of each chunk.', 'said transmission control method comprising the steps of:', 'determining whether to transmit signals using either frequency diversity or multiuser diversity based on a selection between using frequency diversity and multiuser diversity; and', 'controlling delays supplied to a plurality of transmission antennas in response to the determination of using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among a plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency bandwidth of each chunk.
7. The transmission control method according to claim 6,
wherein a directivity control is performed in the multiuser diversity for transmitting the signals.', 'wherein a directivity control is performed in the multiuser diversity for transmitting the signals.
8. The transmission control method according to claim 6,
wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.
9. The transmission control method according to claim 6,
wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals
10. The transmission control method according to claim 6,
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals
11. A transmission apparatus in a transmission system wherein slots are assigned to chunks divided in a frequency domain and in a time domain, the transmission apparatus comprising:
a plurality of transmission antennas;
a delay imparting section imparting delays to signals being supplied to the plurality of transmission antennas; and
a controller controlling the delays in response to using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among the plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency band width of each chunk.', 'a plurality of transmission antennas;', 'a delay imparting section imparting delays to signals being supplied to the plurality of transmission antennas; and', 'a controller controlling the delays in response to using either a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among the plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency band width of each chunk
12. The transmission apparatus according to claim 11,
wherein a directivity control is performed in the multiuser diversity for transmitting the signals.', 'wherein a directivity control is performed in the multiuser diversity for transmitting the signals
13. The transmission apparatus according to claim 11,
wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.14. The transmission apparatus according to claim 11, wherein the maximum delay time among the plurality of transmission antennas is
set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.', 'set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.15. The transmission apparatus according to claim 11, wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.16. A transmission system wherein slots are assigned to chunks divided in a frequency domain and in a time domain, the transmission system comprising:
a plurality of transmission antennas;
a receiving section receiving a determination of whether to transmit signals using either frequency diversity or multiuser diversity based on a selection between using frequency diversity and multiuser diversity; and
a controller controlling delays supplied to the plurality of transmission antennas in response to the determination of using a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among a plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency bandwidth of each chunk.', 'a plurality of transmission antennas;', 'a receiving section receiving a determination of whether to transmit signals using either frequency diversity or multiuser diversity based on a selection between using frequency diversity and multiuser diversity; and', 'a controller controlling delays supplied to the plurality of transmission antennas in response to the determination of using a frequency diversity for transmitting the signals or a multiuser diversity for transmitting the signals such that a maximum delay time among a plurality of transmission antennas is set selectively to either a first value smaller than 1/Fc or a second value larger than 1/Fc where Fc denotes a frequency bandwidth of each chunk.17. The transmission system according to claim 16, wherein a directivity control is performed in the multiuser diversity for transmitting the signals.18. The transmission system according to claim 16, wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals, and
wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.', 'wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.19. The transmission system according to claim 16, wherein the maximum delay time among the plurality of transmission antennas is set to the first value smaller than 1/Fc when using frequency diversity for transmitting the signals.
20. The transmission system according to claim 16, wherein the maximum delay time among the plurality of transmission antennas is set to the second value larger than 1/Fc when using multiuser diversity for transmitting the signals.']
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ClaimChart-US8625717B2-STO
Patent number:US8625717B2
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
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