Abstract
A method for transmitting control information by transmitting a reference signal from a first transceiver to a second transceiver in response to the reception of the reference signal determining at the second transceiver a plurality of control channel elements based upon the received reference signal jointly encoding the plurality of control channel elements at the second transceiver to generate a control signal and transmitting the control signal from the second transceiver to the first transceiver.
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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 Feedback
Product
User Equipment (UE/Terminal)
Use Cases
Wireless communication
Services
UCI transmission
Claim
1. A method for transmitting control information, the method comprising the steps of: transmitting a reference signal from a first transceiver to a second transceiver; in response to the reception of the reference signal, determining at the second transceiver a plurality of control channel elements based upon the received reference signal; jointly encoding the plurality of control channel elements at the second transceiver to generate a control signal; and transmitting the control signal from the second transceiver to the first transceiver.
2. The method of claim 1, with the plurality of control channel elements comprising: a subbands channel quality indicator; an indicator for multiple input and multiple output rank and selected layers; an indicator for multiple input and multiple output precoding; an indicator for acknowledgement or negative acknowledgement; and a cyclic redundancy check indicator.
3. The method of claim 2, comprised of, when four antennas are used by the first transceiver, the indicator for multiple input and multiple output rank and selected layers formed with four bits.
4. The method of claim 2, comprised of, when two antennas are used by the first transceiver, the indicator for multiple input and multiple output rank and selected layers formed with two bits.
5. The method of claim 1, further comprised of presetting a indicator for multiple input and multiple output rank and selected layers, and the plurality of control channel elements comprising: a subbands channel quality indicator; a format indicator; an indicator for multiple input and multiple output precoding; an indicator for acknowledgement or negative acknowledgement; and a cyclic redundancy check indicator.
6. The method of claim I5 further comprised of presetting an indicator for multiple input and multiple output precoding, and the plurality of control channel elements comprising: a subbands channel quality indicator; a format indicator; an indicator for multiple input and multiple output rank and selected layers; an indicator for acknowledgement or negative acknowledgement; and a cyclic redundancy check indicator.
7. The method of claim 1, further comprised of presetting a subbands channel quality indicator, and the plurality of control channel elements comprising: a format indicator; an indicator for multiple input and multiple output rank and selected layers; an indicator for multiple input and multiple output precoding; an indicator for acknowledgement or negative acknowledgement; and a cyclic redundancy check indicator.
8. The method of claim I5 with the step of jointly encoding the plurality of control channel elements at the second transceiver comprising: inserting a selected set of tail bits into the information bits of the plurality of control channel elements; encoding the tail bits inserted control channel elements using a selected code; puncturing the encoded control channel elements; modulating the punctured control channel elements to generated a plurality of equal-length modulated symbols using a selected modulation scheme; modulating a selected sequence using the modulated symbols to generated a plurality of modulated sequences; mapping the plurality of modulated sequences into available transmission resources; and converting the mapped symbols to radio frequency signals.
9. The method of claim 8, further comprised of transforming the plurality of modulated sequences according to a fast Fourier transform scheme before mapping the plurality of modulated sequences into the available transmission resources
10. The method of claim 8, comprised of said selected code being one selected from a group comprising convolutional codes, tail-biting convolutional codes and block codes
11. The method of claim 8, comprised of said selected modulation scheme being one selected from a group comprising Quadrature Phase-Shift Keying (QPSK), Binary Phase Shift Keying (BPSK), and Quadrature Amplitude Modulation (QAM)
12. The method of claim 8, comprised of each of the modulated sequences being a Constant Amplitude Zero Autocorrelation (CAZAC) sequence
13. The method of claim 8, comprised of the step of mapping the plurality of modulated sequences into available transmission resources comprising: dividing the available transmission resources into a plurality of equal duration resource elements in time and frequency domain, with each resource element being formed with a plurality of subcarriers, and the number of subcarriers in each resource element being equal to the number of elements within each of the plurality of modulated sequences; selecting a time-domain subframe for control channel transmission; selecting two sets of resource elements in the time-domain subframe, with the number of resource elements in said two sets of resource elements being equal to the number of the plurality of modulated sequences, a first set of resource elements being located in one edge of the subframe in time and frequency domain, and a second set of resource elements being located in the opposite edge of the subframe in time and frequency domain; and mapping the plurality of modulated sequences into the two sets of resource elements, with each modulated sequence corresponding to one resource element
14. The method of claim 8, comprised of the step of mapping the plurality of modulated sequences into available transmission resources comprising: dividing the available transmission resources into a plurality of equal duration resource elements in time and frequency domain, with each resource element being formed with a plurality of subcarriers, and the number of subcarriers in each resource element being equal to the number of elements within each of the plurality of modulated sequences;', 'selecting a plurality of continuous time-domain subframes for control channel transmission; selecting two sets of resource elements in each time-domain subframe, with, a first set of resource elements within each time-domain subframe being located in one edge of the subframe in time and frequency domain, and a second set of resource elements within each time-domain subframe being located in the opposite edge of the subframe in time and frequency domain, and the relationship between the number of resource elements in the two sets of resource elements in each selected subframe the number of the plurality of modulated sequences being established by:', 'M = X x N where M is the number of the modulated sequences, X is the number of the selected subframes, and N is the number of resource elements in the two sets of resource elements in each selected subframe; and mapping the plurality of modulated sequences into the selected resource elements in the selected subframes, with each modulated sequence corresponding to one resource element
15. The method of claim 8, comprised of the step of mapping the plurality of modulated sequences into available transmission resources comprising: dividing the available transmission resources into a plurality of equal duration resource elements in time and frequency domain, with each resource element being formed with Y subcarriers, each of the plurality of modulated sequences having Z elements, and Y / Z = B, where B is a positive integer; selecting two sets of resource elements in a time-domain subframe for control channel transmission, with the number of resource elements in said two sets of resource elements being equal to the number of the plurality of modulated sequences, a first set of resource elements being located in one edge of the subframe in time and frequency domain, and a second set of resource elements being located in the opposite edge of the subframe in time and frequency domain; and mapping the plurality of modulated sequences into the two sets of resource elements, with each resource element corresponding to B modulated sequences
16. The method of claim 8, comprised of the step of mapping the plurality of modulated sequences into available transmission resources comprising: dividing the available transmission resources into a plurality of equal duration resource elements in time and frequency domain, with each resource element being formed with a plurality of subcarriers, and the number of subcarriers in each resource element being equal to the number of elements within each of the plurality of modulated sequences; selecting a time-domain subframe for control channel transmission; selecting two sets of resource elements in the time-domain subframe, with a first set of resource elements being located in one edge of the subframe in time and frequency domain, and a second set of resource elements being located in the opposite edge of the subframe in time and frequency domain; selecting a subset of modulated sequences to be mapped into the two sets of resource elements, with the number of the modulated sequences within the subset of modulated sequences being equal to the number of resource elements in said two sets of resource elements; and mapping the modulated sequences within the subset of modulated sequences into the two sets of resource elements, with each modulated sequence corresponding to one resource element.17. The method of claim 16, comprised of each modulated sequence being formed with N bits, and the relationship between the total number of modulated sequences and the number of bits in each modulated sequence being established by:', 'M=2N, where M is the total number of modulated sequences.18. The method of claim 1, with the step of jointly encoding the plurality of control channel elements at the second transceiver comprising: inserting a selected set of tail bits into the plurality of control channel elements; encoding the tail bits inserted control channel elements using a selected code; puncturing the encoded control channel elements; modulating the punctured control channel elements to generated a plurality of equal-length modulated symbols using a selected modulation scheme; mapping the plurality of modulated symbols into available transmission resources; and converting the mapped symbols to radio frequency signals19. The method of claim 18, further comprised of transforming the plurality of modulated sequences according to a fast Fourier transform scheme before mapping the plurality of modulated sequences into the available transmission resources.
20. The method of claim 18, comprised of the step of mapping the plurality of modulated symbols into available transmission resources comprising: dividing the available transmission resources into a plurality of equal duration resource elements in time and frequency domain, with each resource element being formed with one subcarrier; selecting two sets of resource elements in a time-domain subframe for control channel transmission, with, a first set of resource elements being located in one edge of the subframe in time and frequency domain, and a second set of resource elements being located in the opposite edge of the subframe in time and frequency domain, and the number of resource elements in the two sets of resource elements in the subframe equals to the number of the plurality of modulated symbols; and mapping the plurality of modulated symbols into the two sets of resource elements.
21. A transmitter, comprising: a control information generator generating a plurality of control elements; a tail bit insertion unit inserting a selected set of tail bits into the plurality of control channel elements; a coding unit encoding the tail bits inserted control channel elements using a selected code; a puncturing unit puncturing the encoded control channel elements; a first modulator modulating the punctured control channel elements to generated a plurality of modulated symbols with a selected modulation scheme; a mapping unit mapping the plurality of control elements into available transmission resources; a upconversion unit converting the mapped symbols to radio frequency signals; at least one antenna coupled to transmit the radio frequency signals.
22. The transmitter of claim 21, comprising a second modulator modulating a selected sequence using each of the modulated symbols to generated a plurality of modulated sequences.
23. The transmitter of claim 21, comprised of said selected code being one selected from a group comprising convolutional codes, tail-biting convolutional codes and block codes.
24. The transmitter of claim 21, comprised of said selected modulation scheme being one selected from a group comprising Quadrature Phase-Shift Keying (QPSK), Binary Phase Shift Keying (BPSK), and Quadrature Amplitude Modulation (QAM).
25. The transmitter of claim 21, comprised of each of the modulated sequences being a Constant Amplitude Zero Auto Correlation (CAZAC) sequence.
26. The transmitter of claim 21, further comprised of a fast Fournier transformer coupled before the mapping unit.']
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SUMMARY
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