Abstract
A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network (100) is obtained using a first and a second sequence. Embodiments of the present invention mitigate interference by restricting the choice of the first sequence. Thus in an embodiment of the invention the first sequence is selected from a set of M sequences wherein M is strictly less than N. In order to accommodate high-velocity users the restricted set contains a pair of sequences whose element-wise product is mirror symmetric. In other embodiments of the invention the choices of the first sequence and second sequence in a time-frequency resource is arranged such that interference is mitigated. A transmission component for K-th logical time duration is obtained from the entire second sequence and K-th element of the first sequence.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
Not Available | 09/11/2011 | ISLD-201111-002 | TEXAS INSTRUMENTS INC | No | Family Member | ||||
Not Available | 07/12/2011 | ISLD-201112-002 | TEXAS INSTRUMENTS INC | No | Family Member |
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Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
US2008316957A1 | Not Available | 09/11/2011 | ISLD-201111-002 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US2008316957A1 | Not Available | 07/12/2011 | ISLD-201112-002 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US8169950B2 | Not Available | 09/11/2011 | ISLD-201111-002 | TEXAS INSTRUMENTS INC | Yes | Basis Patent | ||||
US8169950B2 | Not Available | 07/12/2011 | ISLD-201112-002 | TEXAS INSTRUMENTS INC | Yes | Basis Patent |
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Claim
1. A method for operating a wireless communication system, comprising: sending an indication of a first sequence from a primary node to at least one secondary node, wherein the first sequence is of length N, and wherein the first sequence is selected from a restricted sequence set comprising of M sequences of length N each, wherein M < N, and wherein an element- wise product of at least one pair of the first sequences from the restricted sequence set results in a mirror-symmetric sequence; sending an indication of a second sequence from the primary node to at most two secondary nodes, wherein the second sequence comprises at least two samples; and wherein indications of both sequences pertain to a time-frequency resource; and receiving a transmission signal produced by the secondary node, wherein transmission signal comprises a time duration set comprising of N logical time durations, wherein the transmission signal in a K-th logical time duration is generated by operating on the entire second sequence with the K-th element of the first sequence.
2. The method of Claim 1, wherein each logical time duration is an OFDM symbol, and wherein sending indications of the first and second sequence comprises: transmitting from the first node to a secondary node using a control channel element with index L; and deriving the first sequence and the second sequence at the secondary node using L.
3. The method of Claim 1, wherein each logical time duration is an OFDM symbol, and wherein sending indications of the first and second sequences comprises: transmitting an index L from the first node to a secondary node; and deriving the first sequence and the second sequence at the secondary node using L.
4. The method of Claim 1 , wherein the indication of a second sequence is sent to a first secondary node and to a second secondary node; wherein sending an indication of a first sequence comprises sending an indication of a first first sequence to the first secondary node and sending an indication of a second first sequence to the second secondary node; and wherein the first first sequence and the second first sequence comprise a pair whose element-wise product is mirror-symmetric.
5. The method of Claim 4 wherein the restricted set consists of three sequences: 1 1 1 1, 1 -1 1 -1, and 1 -1 -1 1, and wherein the first first sequence is 1 1 1 1 and the second first sequence is 1 -1 -1 I.
6. The method of Claim 1, wherein the second sequence is selected from a set of second sequences, and wherein the second sequence is a phase - ramped root sequence, and wherein the set of second sequences is ordered so that the amount of phase ramp is a monotonic function of the index of the second sequence.
7. The method of Claim 6, wherein the indication of a first sequence is sent to a first secondary node and to a second secondary node; and wherein sending an indication of a second sequence comprises sending an indication of a first second sequence to the first secondary node, and sending an indication of a second second sequence to the second secondary node; and wherein the index of the first second sequence and the index of the second second sequence differ by at least 2.
8. The method of Claim 7, further comprising: sending indication of a second first sequence to a third secondary node; sending indication of the first second sequence to the third secondary node; and wherein the first first sequence and the second first sequence comprise a pair whose element-wise product is mirror-symmetric.
9. The method of Claim 7 or 8 wherein the restricted set consists of one the following sequences: a) the three sequences: 1 1 1 1, 1 -1 1 -1, and 1 -1 -1 1, and wherein the first first sequence is 1 1 1 1 and the second first sequence is 1 -1 -1 I; b) the three sequences: 1 1 1 1, 1 -1 1 -1, and 1 -1 -1 I; c) the two sequences: 1 1 1 1 and 1 - 1 -1
9, s(L12) = l; or b) s(Ll) = s(L13) = 1, s(L2) = s(L14) = 3, s(L3) = s(L15) = 5, s(L4) = s(L16) = 7, s(L5) = s(L17) = 9, s(L6) = s(L18) = 11, s(L7) = 2, s(L8) = 4, s(L9) = 6, s(L10) = 8, s(Ll l) =10, s(L12) = 0.19. The method of claim 14, further comprising receiving an index L, such that f(L) is the index of the produced first sequence, and s(L) is the index of the produced second sequence; wherein the second sequence is a phase - ramped root sequence, and the amount of phase ramp is a monotonic function of the index s(L) of the second sequence; wherein L belongs to a set comprising of at least Ll and L2; wherein functions f and s are designed so that Is(Ll) - s(L2)l > Îx94 whenever f(Ll) = f(L2), where Îx94 is a configured integer value; and wherein the element- wise product of f(Ll) and f(L2) is mirror symmetric whenever s(Ll) = s(L2).']
10. The method of Claim 1, wherein an element of uplink control information (UCI) is used to produce the transmission signal at the secondary node, and wherein the element of UCI is selected from a set consisting of: ACKNAK information, scheduling request indicator (SRI), and rank indicator (RI)
11. A user equipment apparatus (UE) for transmission of information using sequences in a wireless communication system, comprising: means for producing a sequence, wherein the sequence is within a set of sequences, wherein each sequence from the set is a phase ramped root sequence, wherein the amount of phase ramp is a monotonic function of an index of the sequence within the set, wherein the set of sequences comprises at least three mutually exclusive subsets such that each subset comprises at least one sequence, wherein an index of any sequence in a first subset is smaller than an index of any sequence in a second subset, an index of any sequence in the second subset is smaller than an index of any sequence in a third subset; and wherein the second subset is a guard subset; means for determining a type of the information, wherein the type of information comprises at least a first type and a second type; means for selecting a sequence from the set of sequences, wherein a sequence is selected from the first set if the information is of the first type or selected from the third set if the information is of the second type; and means for producing a transmission signal using the information and the selected sequence
12. The UE of Claim 11, wherein the first type of information is ACKNAK information or a scheduling request indicator (SRI); and wherein the second type of information is a channel quality indicator (CQI)
13. A method for operating a wireless network using sequences for transmission of information; comprising: holding in a first node a representation of a set of sequences comprising at least three mutually exclusive subsets such that each subset comprises at least one sequence, wherein each sequence from the set of sequences is a phase ramped root sequence and the amount of phase ramp is a monotonic function of an index of the sequence within the set, wherein an index of any sequence in the first subset is smaller than an index of any sequence in the second subset, and an index of any sequence in the second subset is smaller than an index of any sequence in the third subset; wherein the second subset is a guard subset; indicating to a second node the type of information, wherein the type of information comprises at least a first type and a second type; indicating to the second node a sequence from the first set of sequences if the information is of the first type; indicating to the second node a sequence from the third set of sequences if the information is of the second type; and receiving a transmission signal from the second node; wherein the transmission signal is produced using the information and the indicated sequence
14. A method for transmission in a wireless communication system, comprising: receiving an indication of a first sequence from a primary node at a user equipment (UE), wherein the first sequence is of length N, and wherein the first sequence is selected from a restricted set comprising M sequences of length N each, wherein M < N; receiving an indication of a second sequence from a primary node at the UE, wherein the second sequence comprises at least two samples; and wherein indications of both sequences pertain to a time-frequency resource; producing a first sequence at the UE by using the received indication; producing a second sequence at the UE by using the received indication; and forming a transmission signal by the UE, wherein the transmission signal comprises a plurality of logical time durations, wherein a K-th logical time duration of the transmission signal is generated by operating on the entire second sequence with the K-th element of the first sequence
15. The method of Claim 14, wherein the restricted set consists of one of the following sequences; a) the three sequences 1 1 1 1, 1 -1 1 -1, and 1 -1 -1 I; b) the two sequences 1 1 1 1 and 1 -1 -1 I
16. The method of Claim 14 or 15, wherein an element of uplink control information (UCI) is used to produce the transmission signal at the secondary node; and wherein the element of UCI is selected from the set consisting of: ACKNAK information, scheduling request indicator (SRI), and rank indicator (RI).17. The method of claim 14 or 15, further comprising receiving a signal on a control channel element with index L, such that f(L) is the index of the produced first sequence, and s(L) is the index of the produced second sequence; wherein the second sequence is a phase - ramped root sequence, and the amount of phase ramp is a monotonic function of the index s(L) of the second sequence; wherein L belongs to a set comprising of at least Ll and L2; wherein functions f and s are designed so that Is(Ll) - s(L2)l > Îx94 whenever f(Ll) = f(L2), whereÎx94 is a configured integer value; and wherein the element- wise product of f(Ll) and f(L2) is mirror symmetric whenever s(Ll) = s(L2).18. The method of Claim 17 , wherein index L belongs to a set comprising Ll, L2, L3, L4, L5, L6, L7, L8, L8, L9, LlO, LI l, L12, L13, L14, L15, L16, L17, L18; wherein f(Ll), f(L2), f(L3), f(L4), f(L5), f(L6) map to the index of the first sequence 1 1 1 1; wherein f(L7), f(L8), f(L9), f(L10), f(Ll l), f(L12) map to the index of the first sequence 1 -1 1 -I; wherein f(L13), f(L14), f(L15), f(L16), f(L17), f(L18) map to the index of the first sequence 1 -1 -1 I; and characterized by one of the following: a) s(Ll) = s(L13) = 0, s(L2) = s(L14) = 2, s(L3) = s(L15) = 4, s(L4) = s(L16) = 6, s(L5) = s(L17) =8, s(L6) = s(L18) = 10, s(L7) = 1, s(L8) = 3, s(L9) = 5, s(L10) = 7, s(Ll l) =
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SUMMARY
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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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.