Abstract
Techniques for transmitting information using cyclically shifted sequences are described. In one design first and second sequences may be generated by cyclically shifting a base sequence by first and second amounts respectively. The base sequence may be a CAZAC sequence a PN sequence or some other sequence having good correlation properties. The cyclic shifts for the first and second sequences may be determined based on a hopping pattern. A first modulated sequence may be generated based on the first sequence and a first modulation symbol and may be sent in a first time interval. A second modulated sequence may be generated based on the second sequence and a second modulation symbol and may be sent in a second time interval. Each modulated sequence may be sent on K consecutive subcarriers using localized frequency division multiplexing (LFDM)
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Resource configuration Signal Processing
Product
User Equipment (UE/Terminal)Base Station (eNB/gNB)
Use Cases
Wireless communication
Services
Transmitting/receiving data in uplink
Claim
1. An apparatus for wireless communication, comprising: at least one processor configured to use a first sequence for exchanging information in a first time interval, and to use a second sequence for exchanging information in a second time interval, the second sequence being a cyclic shift of the first sequence; and a memory coupled to the at least one processor.
2. The apparatus of claim 1, wherein the at least one processor is configured to generate the first sequence by cyclically shifting a base sequence by a first amount, and to generate the second sequence by cyclically shifting the base sequence by a second amount.
3. The apparatus of claim 2, wherein the base sequence is a CAZAC (constant amplitude zero auto correlation) sequence.
4. The apparatus of claim 1, wherein the at least one processor is configured to generate a first modulated sequence based on the first sequence and a first modulation symbol, to generate a second modulated sequence based on the second sequence and a second modulation symbol, to send the first modulated sequence in the first time interval, and to send the second modulated sequence in the second time interval.
5. The apparatus of claim 4, wherein the at least one processor is configured to send K symbols for the first modulated sequence on K consecutive subcarriers in the first time interval, and to send K symbols for the second modulated sequence on K consecutive subcarriers in the second time interval.
6. The apparatus of claim 4, wherein the at least one processor is configured to multiply each of K samples for the first sequence with the first modulation symbol to obtain a corresponding one of K symbols for the first modulated sequence, and to multiply each of K samples for the second sequence with the second modulation symbol to obtain a corresponding one of K symbols for the second modulated sequence.
7. The apparatus of claim 4, wherein the at least one processor is configured to generate the first and second modulation symbols based on only acknowledgement (ACK) information, or only channel quality indicator (CQI) information, or both ACK and CQI information.
8. The apparatus of claim 1, wherein the at least one processor is configured to receive a first modulated sequence in the first time interval, to receive a second modulated sequence in the second time interval, to correlate the first modulated sequence with the first sequence to obtain information sent in the first time interval, and to correlate the second modulated sequence with the second sequence to obtain information sent in the second time interval.
9. The apparatus of claim 1, wherein the at least one processor is configured to receive information sent simultaneously by M user equipments (UEs) using M sequences of different cyclic shifts in the first time interval, where M is one or greater, and the M sequences comprising the first sequence
10. The apparatus of claim 1, wherein the at least one processor is configured to determine cyclic shifts for the first and second sequences based on a hopping pattern
11. The apparatus of claim 10, wherein the at least one processor is configured to determine the hopping pattern based on resources assigned for data transmission
12. The apparatus of claim 10, wherein the hopping pattern is specific to a cell via which information is exchanged
13. The apparatus of claim 1, wherein the at least one processor is configured to assign M hopping patterns to M user equipments (UEs), where M is one or greater, the M hopping patterns being associated with M different cyclic shifts of a base sequence in each time interval
14. The apparatus of claim 1, wherein the first and second time intervals correspond to first and second symbol periods, respectively
15. The apparatus of claim 1, wherein the first and second time intervals correspond to first and second slots, respectively, each slot comprising multiple symbol periods
16. The apparatus of claim 1, wherein the at least one processor is configured to use a third sequence for a reference signal in a third time interval, the third sequence being another cyclic shift of the first sequence
17. The apparatus of claim 1, wherein the at least one processor is configured to use the first or second sequence for a reference signal in a third time interval
18. A method for wireless communication, comprising: using a first sequence for exchanging information in a first time interval; and using a second sequence for exchanging information in a second time interval, the second sequence being a cyclic shift of the first sequence
19. The method of claim 18, further comprising: generating the first sequence by cyclically shifting a base sequence by a first amount; and generating the second sequence by cyclically shifting the base sequence by a second amount.
20. The method of claim 18, wherein the using the first sequence for exchanging information comprises generating a first modulated sequence based on the first sequence and a first modulation symbol, and sending the first modulated sequence in the first time interval, and wherein the using the second sequence for exchanging information comprises generating a second modulated sequence based on the second sequence and a second modulation symbol, and sending the second modulated sequence in the second time interval.
21. The method of claim 20, wherein the sending the first modulated sequence comprises sending K symbols for the first modulated sequence on K consecutive subcarriers in the first time interval, and wherein the sending the second modulated sequence comprises sending K symbols for the second modulated sequence on K consecutive subcarriers in the second time interval.
22. The method of claim 20, further comprising: generating the first and second modulation symbols based on only acknowledgement (ACK) information, or only channel quality indicator (CQI) information, or both ACK and CQI information.
23. The method of claim 18, wherein the using the first sequence for exchanging information comprises receiving a first modulated sequence in the first time interval, and correlating the first modulated sequence with the first sequence to obtain information sent in the first time interval, and wherein the using the second sequence for exchanging information comprises receiving a second modulated sequence in the second time interval, and correlating the second modulated sequence with the second sequence to obtain information sent in the second time interval.
24. The method of claim 18, further comprising: receiving information sent simultaneously by M user equipments (UEs) with M sequences of different cyclic shifts in the first time interval, where M is one or greater, and the M sequences comprising the first sequence.
25. An apparatus for wireless communication, comprising: means for using a first sequence for exchanging information in a first time interval; and means for using a second sequence for exchanging information in a second time interval, the second sequence being a cyclic shift of the first sequence.
26. The apparatus of claim 25, further comprising: means for generating the first sequence by cyclically shifting a base sequence by a first amount; and means for generating the second sequence by cyclically shifting the base sequence by a second amount.
27. The apparatus of claim 25, wherein the means for using the first sequence for exchanging information comprises means for generating a first modulated sequence based on the first sequence and a first modulation symbol, and means for sending the first modulated sequence in the first time interval, and wherein the means for using the second sequence for exchanging information comprises means for generating a second modulated sequence based on the second sequence and a second modulation symbol, and means for sending the second modulated sequence in the second time interval.
28. The apparatus of claim 27, wherein the means for sending the first modulated sequence comprises means for sending K symbols for the first modulated sequence on K consecutive subcarriers in the first time interval, and wherein the means for sending the second modulated sequence comprises means for sending K symbols for the second modulated sequence on K consecutive subcarriers in the second time interval.
29. The apparatus of claim 27, further comprising: means for generating the first and second modulation symbols based on only acknowledgement (ACK) information, or only channel quality indicator (CQI) information, or both ACK and CQI information.
30. The apparatus of claim 25, wherein the means for using the first sequence for exchanging information comprises means for receiving a first modulated sequence in the first time interval, and means for correlating the first modulated sequence with the first sequence to obtain information sent in the first time interval, and wherein the means for using the second sequence for exchanging information comprises means for receiving a second modulated sequence in the second time interval, and means for correlating the second modulated sequence with the second sequence to obtain information sent in the second time interval.
31. The apparatus of claim 25, further comprising: means for receiving information sent simultaneously by M user equipments (UEs) with M sequences of different cyclic shifts in the first time interval, where M is one or greater, and the M sequences comprising the first sequence.
32. A machine -readable medium comprising instructions which, when executed by a machine, cause the machine to perform operations including: using a first sequence for exchanging information in a first time interval; and using a second sequence for exchanging information in a second time interval, the second sequence being a cyclic shift of the first sequence.
33. The machine -readable medium of claim 32 which, when executed by the machine, cause the machine to perform operations further including: generating the first sequence by cyclically shifting a base sequence by a first amount; and generating the second sequence by cyclically shifting the base sequence by a second amount.
34. The machine -readable medium of claim 32 which, when executed by the machine, cause the machine to perform operations further including: generating a first modulated sequence based on the first sequence and a first modulation symbol; generating a second modulated sequence based on the second sequence and a second modulation symbol; sending the first modulated sequence in the first time interval; and sending the second modulated sequence in the second time interval.
35. The machine -readable medium of claim 32 which, when executed by the machine, cause the machine to perform operations further including: receiving a first modulated sequence in the first time interval; receiving a second modulated sequence in the second time interval; correlating the first modulated sequence with the first sequence to obtain information sent in the first time interval; and correlating the second modulated sequence with the second sequence to obtain information sent in the second time interval.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.