JP6897815B2 - UE and how it is done by UE - Google Patents

Description

Embodiments of the present disclosure generally relate to wireless communication technology, and more particularly to methods and devices for transmitting uplink (UL) information, and methods and devices for receiving UL information.

In existing wireless communications, each subframe comprises two slots, each containing seven symbols. As shown in FIG. 1, all seven symbols in the slot can be used as UL symbols for physical uplink control channel (PUCCH) transmission, demodulation reference signal (DMRS) transmission, and the like. The PUCCH is a UL channel that carries uplink control information, such as, for example, ACK / NACK, channel quality indicator (CQI), recording matrix indicator (PMI), (rank indicator) RI, and the like. As shown in FIG. 1, three intermediate symbols are used to transmit DMRS and the other symbols are used to transmit PUCCH symbols.

Usually, an ACK / NACK is received on the PUCCH after the symbols have been transmitted and before four more symbols have been transmitted, which means a substantial wait time. It has been proposed to reduce the number of UL symbols in order to reduce latency. In future 5th generation (5G) communications, a frame configuration with only one or more symbols has been proposed to reduce latency, which is the presence of one or more symbols for UL transmission. Means that. For illustration purposes, FIG. 2 shows one of the possible new subframe configurations, with only one symbol for UL transmission. However, it should be understood that in another possible new subframe configuration, the symbols may be placed in different positions and / or may have multiple UL symbols.

Therefore, new PUCCH channel configurations and new UL information transmission solutions are required to adapt to frame configurations with reduced UL symbols.

The present disclosure provides new solutions for the transmission and reception of UL information that alleviate or at least alleviate at least some of the problems of the prior art.

According to the first aspect of the present disclosure, a method of transmitting UL information is provided. The method comprises transmitting a reference signal using the first sequence and transmitting UL control information using the second sequence, and the reference signal and the UL control information are , Staggered and multiplexed in the frequency domain.

A second aspect of the present disclosure provides a method of receiving UL information. The method comprises receiving a reference signal transmitted using the first sequence, receiving control information transmitted using the second sequence, and using the reference signal. The control information is demodulated, and the reference signal and the UL control information are multiplexed by staggering in the frequency domain.

In the third aspect of the present disclosure, a device for transmitting UL information is also provided. The device includes a reference signal transmission unit configured to transmit a reference signal using the first sequence, and a control information transmission unit configured to transmit UL control information using the second sequence. And, the reference signal and the UL control information are multiplexed by staggering in the frequency domain.

In a fourth aspect of the present disclosure, a device for receiving UL information is provided. The device is configured to receive a reference signal receiver configured to receive a reference signal transmitted using the first sequence and control information transmitted using the second sequence. The control information receiving unit and the demodulating unit configured to demodulate the control information using the reference signal are provided, and the reference signal and the UL control information are staggered in the frequency region. Is multiplexed.

According to a fifth aspect of the present disclosure, a computer-readable storage medium in which a computer program code is embodied and provided, the computer program code, when executed, is any of the first aspects. In the method according to the embodiment, the device is configured to perform an operation.

According to a sixth aspect of the present disclosure, a computer-readable storage medium in which a computer program code is embodied and further provided, the computer program code, when executed, is any of the second aspects. In the method according to the embodiment of the above, the apparatus is configured to perform an operation.

According to a seventh aspect of the present disclosure, a computer program product comprising a computer-readable storage medium according to the fifth aspect is provided.

According to an eighth aspect of the present disclosure, a computer program product comprising a computer-readable storage medium according to the sixth aspect is provided.

Embodiments of the present disclosure provide new solutions for UL transmission and reception, in which the uplink information is reduced to adapt to the subframe configuration of the reduced uplink symbol. The symbol can be transmitted, and therefore the transmission waiting time can be significantly reduced.

The above and other features of the present disclosure become more apparent through a detailed description of the embodiments shown in embodiments with reference to the accompanying drawings, throughout which the same reference numbers indicate the same or similar components. ..

FIG. 1 schematically shows UL symbols in an existing subframe configuration.

FIG. 2 schematically shows one of the possible UL symbols in a newly proposed subframe configuration with reduced UL symbols.

FIG. 3 schematically shows a PUCCH pattern in an existing communication system.

FIG. 4 schematically shows a HARQ ACK / NACK constellation mapping.

FIG. 5 schematically shows UL information transmission in the existing PUCCH format 1a / 1b.

FIG. 6 schematically shows the basic sequence of UL symbols.

FIG. 7 schematically shows UL information transmission in the existing PUCCH format 2a / 2b.

FIG. 8 schematically shows a flowchart of a method of transmitting UL information according to an embodiment of the present disclosure.

FIG. 9 shows a schematic diagram of DMRS and PUCCH information transmission according to an embodiment of the present disclosure.

FIG. 10 schematically shows an example of a new PUCCH structure according to an embodiment of the present disclosure.

FIG. 11 schematically shows another basic sequence that can be used for DMRS and PUCCH information according to one embodiment of the present disclosure.

FIG. 12 schematically shows another new PUCCH structure according to another embodiment of the present disclosure.

FIG. 13 schematically shows a further new PUCCH structure according to a further embodiment of the present disclosure.

FIG. 14A schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 14B schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 14C schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 14D schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 14E schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure.

FIG. 15A schematically shows an example of a resource mapping method according to the embodiment of the present disclosure. FIG. 15B schematically shows an example of a resource mapping method according to the embodiment of the present disclosure. FIG. 15C schematically shows an example of a resource mapping method according to the embodiment of the present disclosure. FIG. 15D schematically shows an example of a resource mapping method according to the embodiment of the present disclosure. FIG. 15E schematically shows an example of a resource mapping method according to the embodiment of the present disclosure. FIG. 15F schematically shows an example of a resource mapping method according to the embodiment of the present disclosure.

FIG. 16A schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 16B schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 16C schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure. FIG. 16D schematically shows an example of a PUCCH and DMRS multiplexing scheme according to an embodiment of the present disclosure.

FIG. 17A schematically shows an example of a resource mapping method according to an embodiment of the present disclosure. FIG. 17B schematically shows an example of a resource mapping method according to an embodiment of the present disclosure. FIG. 17C schematically shows an example of a resource mapping method according to an embodiment of the present disclosure. FIG. 17D schematically shows an example of a resource mapping method according to an embodiment of the present disclosure.

FIG. 18A schematically shows an example of a resource mapping method for a common representation according to an embodiment of the present disclosure. FIG. 18B schematically shows an example of a resource mapping method for a common representation according to an embodiment of the present disclosure. FIG. 18C schematically shows an example of a resource mapping method for a common representation according to an embodiment of the present disclosure. FIG. 18D schematically shows an example of a resource mapping method for a common representation according to an embodiment of the present disclosure.

FIG. 19 schematically shows a block diagram of DMRS and PUCCH information transmission according to another embodiment of the present disclosure.

FIG. 20 schematically shows a new PUCCH structure according to another embodiment of the present disclosure.

FIG. 21 schematically shows the correspondence between the modulation symbol and the sequence group according to the embodiment of the present disclosure.

FIG. 22 schematically shows constellation mapping according to an embodiment of the present disclosure.

FIG. 23 schematically illustrates cyclic shift grouping according to an embodiment of the present disclosure.

FIG. 24 schematically shows ACH / NACK constellation mapping for one of the exemplary cyclic shift groupings shown in FIG. 21 according to one embodiment of the present disclosure.

FIG. 25 schematically shows a further PUCCH structure according to a further embodiment of the present disclosure.

FIG. 26A schematically shows another option for PUCCH design according to one embodiment of the present disclosure. FIG. 26B schematically shows another option for PUCCH design according to one embodiment of the present disclosure.

FIG. 27A schematically illustrates another possible UL region design according to another embodiment of the present disclosure. FIG. 27B schematically shows another possible UL region design according to another embodiment of the present disclosure.

FIG. 28A schematically illustrates another DMRS window design according to another embodiment of the present disclosure. FIG. 28B schematically illustrates another DMRS window design according to another embodiment of the present disclosure. FIG. 28C schematically shows another DMRS window design according to another embodiment of the present disclosure.

FIG. 29 schematically shows a flowchart of a method of receiving UL information according to an embodiment of the present disclosure.

FIG. 30 schematically shows a block diagram of an apparatus for transmitting UL information according to an embodiment of the present disclosure.

FIG. 31 schematically shows a block diagram of an apparatus for receiving UL information according to an embodiment of the present disclosure.

FIG. 32 further includes a device 3310 that can be embodied as a UE or included in a UE, and a device 3320 that can be embodied or included in a base station of a wireless network as described herein. The simplified block diagram of is shown.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be understood that these embodiments are presented only to enable those skilled in the art to better understand and implement the disclosure and are not intended to limit the scope of the disclosure.

In the accompanying drawings, various embodiments of the present disclosure are shown in block diagrams, flowcharts and other diagrams. Each block within a flowchart or block can represent part of a module, program, or code that contains one or more executable instructions to perform a specified logical function and can be dispensed in this disclosure. Blocks are indicated by dotted lines. Moreover, although these blocks are shown in a particular sequence for performing the steps of the method, in practice they do not have to be performed exactly according to the sequence shown. For example, they may be performed in reverse order or at the same time, depending on the nature of each operation. The block diagrams and / or blocks of the flowchart and / or combinations thereof may be implemented by a dedicated hardware-based system for performing a particular function / operation, or by a combination of dedicated hardware and computer instructions. Please also note that.

Generally, the terms used in the claims are to be construed according to their usual meaning in the art, unless expressly defined herein. References to "a / an / the / side" elements, devices, components, means, steps, etc. "", unless explicitly declared otherwise, multiple such devices, components, means, units. , Etc., are openly construed as references to instances of at least one element, device, component, means, unit step, etc., and the indefinite article "a / an" as used herein. Does not exclude multiple such steps, units, modules, devices, objects, etc.

In addition, in the context of the present disclosure, user equipment (UE: User Equipment) includes terminals, mobile terminals (MT: Mobile Terminal), subscriber stations (SS: Subscriber Station), mobile subscriber stations (PSS: Portable Subscriber Station). ), Mobile Station (MS), or Access Terminal (AT), and some or all functions of UE, terminal, MT, SS, PSS, MS, or AT Can be included. Further, in the context of the present disclosure, the term "BS" is used, for example, as node B (NodeB or NB), evolved node B (eNodeB or eNB), radio header (RH: Radio Header), remote radio head (RRH). It can represent a Head), a relay, or a low power node such as a femto, pico, etc.

As mentioned above, in existing subframes, all seven symbols in the slot can be used as UL symbols. Hereinafter, the pattern of PUCCH in the existing communication will be described with reference to FIGS. 3 to 7 in order to better understand the present disclosure.

First, reference is made to FIG. 3, which shows the PUCCH pattern in the existing communication system in more detail. FIG. 3 shows UL subframe k and UL subframe k + 8, especially in each subframe, PUCCH is transmitted at the edge of the system bandwidth and hopping in two slots.

In existing communications, the format for PUCCH comprises format 1a / 1b and format 2a / 2b, which format 1a / 1b is used to transmit 1-bit or 2-bit ACK / NACK. 2a / 2b is used to transmit the uplink CQI and 1-bit or 2-bit ACK / NACK. Normally, PUCCH bits, such as ACK / NACK bits, are modulated into ACK / NACK symbols through constellation mapping. Different constellation mappings are used for different modulation techniques. FIG. 4 schematically shows different constellation mappings for HARQ ACK / NACK. As shown in FIGS. 4 and 5, in the case of BPSK (Binary Phase Shift Keying), ACK = 1 and DTX / NACK = 0 are mapped to -1 and +1 respectively, and in the case of QPSK (Quadrature Phase Shift Key), (ACK / NACK) = 11, (ACK / NACK) = 00, (ACK / NACK) = 10, and (ACK / NACK) = 01 are mapped to +1, -1, + j, and -j, respectively.

FIG. 5 schematically shows UL information transmission in the existing PUCCH format 1a / 1b. As shown in FIG. 5, after being modulated into an ACK / NACK symbol through constellation mapping, the ACK / NACK symbol is multiplied by a basic sequence of length 12. The basic sequence is shown in FIG. The basic sequence is shifted by using different cycle shifts and is further multiplied by the OCC sequence, as shown in FIG. The resulting signal is further processed through an inverse fast Fourier transform (IFFT) to form the symbols # 0, # 1, # 5 and # 6 of a single carrier frequency division multiple access (SC-FDMA). On the other hand, the basic sequence shifted using different cycle shifts is multiplied by the OCC sequence and the resulting signal is processed by the IFFT, thereby forming the DM-RS symbol. In other words, the formation of DMRS and PUCCH is _{substantially similar, except that d 0 of} the NACK symbol is not multiplied by the DM-RS symbol.

FIG. 7 schematically shows a PUCCH pattern in the existing PUCCH format 2a / 2b. The PUCCH pattern of FIG. 7 is that the OCC sequence is not used, the CSI bits (10 bits) encoded after QPSK modulation are converted from 5 data d0 to d5 through serial parallel processing, and the PUCCH symbol and DMRS symbol are used. Is similar to that shown in FIG. 5, except that they have different positions.

As mentioned above, since the existing PUCCH pattern cannot be used when using the reduced UL symbol, the present invention provides a new PUCCH design and a new UL control information transmission / reception solution, which is shown in FIG. It will be described with reference to FIG. 32.

FIG. 8 schematically shows a flowchart of a method of transmitting UL information according to an embodiment of the present disclosure. As shown in FIG. 8, first, in step 810, the reference signal is transmitted using the first sequence, and in step 820, the UL control information is transmitted using the second sequence, particularly the reference signal and the UL. The control information and the control information are alternately shifted and multiplexed in the frequency domain.

To better understand the disclosure, FIG. 9 further shows a diagram of DMRS and PUCCH information transmission according to an embodiment of the disclosure. As shown in FIG. 9, when the DMRS, basic sequence 1 having a length of N is first converted to R _'1 through conversion, such as cyclic shift or phase rotation, then, it is mapped to a physical resource. At the same time, the PUCCH information bits are first mapped to the information symbol via any of the constellation mappings as shown in FIG. Next, the information symbol d _i is the basic sequence 2 having a length of M, further multiplied by the series R _'2, which for example are cyclically shifted. The resulting Y is then mapped to the physical resource.

PUCCH information is transmitted with DMRS. When mapping to resources, the reference signal and UL control information are interconnected in the frequency domain, as shown in FIG. 10, which shows an exemplary new PUCCH configuration according to one embodiment of the present disclosure. As shown in FIG. 10, PUCCH and DMRS share the same basic sequence of length 12, for example as shown in FIG. To obtain the PUCCH symbol d ₀ , the PUCCH (eg, ACK / NACK) bits {0,1} are first modulated into the PUCCH symbol after the constellation mapping. Constellation mapping may be performed according to that shown in FIG. The PUCCH symbol is then modulated on the basic sequence, which is also used for DMRS. _{The PUCCH symbol Y n} modulated on the basic sequence can be expressed as follows.
Y _n = d ₀ · R _n , n = 0, 1,. .. .. , 11

Here, Y _n indicates the symbol of the result after modulation, d ₀ indicates the PUCCH symbol after constellation mapping, and R _n indicates the basic sequence. Therefore, in the case of PUCCH, the total number of resource elements is 24.

FIG. 11 schematically shows another basic sequence that can be used for DMRS and PUCCH information according to one embodiment of the present disclosure. The orthogonal sequence R _n (i) can be based on the OCC / DFT sequence, which has a length of 6 and there are 6 orthogonal sequences with indexes in the range 0-5. Therefore, it is clear that the sequence of DMRS and PUCCH is not limited to that shown in FIG. 6 or 11, and in practice any suitable sequence is used as long as frequency orthogonality is guaranteed. can do.

FIG. 12 shows another novel PUCCH structure according to another embodiment of the present disclosure and is used in conjunction with a basic sequence as shown in FIG. As shown in FIG. 12, PUCCH and DMRS share the same basic sequence, but as shown in FIG. 11, for example, the length of the basic sequence is 6. Similarly, in order to obtain a PUCCH symbols _{d 0,} PUCCH (e.g., ACK / NACK) bit {0,1} it is first modulated PUCCH symbols after the constellation mapping. Constellation mapping can also be performed according to that shown in FIG. The PUCCH symbol is then modulated on a basic sequence of length 6. _{The PUCCH symbol Y n} modulated on the basic sequence can be expressed as follows.
Y _n = d ₀ · R _n (i), i = 0, 1,. .. .. , 5
Here, Y _n indicates a symbol of the result after modulation, d ₀ indicates a PUCCH symbol after constellation mapping, and R _n (i) indicates a sequence having an index i, as shown in FIG.

The PUCCH symbol is transmitted with the DMRS and is multiplexed in a staggered manner in the frequency domain, as shown in FIG. Therefore, in the case of such PUCCH, the total number of resource elements is 12.

In a further embodiment of the present disclosure, DMRS uses, for example, a basic sequence of length 12 as shown in FIG. On the other hand, PUCCH uses different sequences, for example as shown in FIG. FIG. 13 schematically illustrates a further new PUCCH configuration according to a further embodiment of the present disclosure, which can be used in the present embodiment in which sequences of different lengths are used. In such a case, the PUCCH symbol Y _n modulated on the basic sequence can be expressed as follows.
Y _n = d ₀ · S (i), i = 0,1,. .. .. , 5
Here, Y _n indicates the symbol of the result after modulation, d ₀ indicates the PUCCH symbol after constellation mapping, and as shown in FIG. 11, S (i) indicates the basic sequence in which the index of PUCCH is i. .. In such a PUCCH, the two PUCCH symbols are transmitted with the DMRS, thereby staggering and multiplexing, and the total number of resource elements is 24.

Therefore, in FIG. 9, the two basic sequences R ₁ and R ₂ shown in the figure may be the same sequence. For example, PUCCH can use the basic sequence for DMRS, as shown in FIGS. 6 and 11. Further, the basic sequence R ₁ and the basic sequence R ₂ can share the basic sequence. Alternatively, the two basic sequences may be different. For example, the basic sequence R ₂ may be a different root sequence of the basic sequence R _1. Also, the two basic sequences R ₁ and R ₂ can have the same length, i.e. M = N, or different lengths, i.e. M ≠ N. Sequence R for _{'1 (first} sequence) is the same as the basic sequence R _1, or a sequence R' DMRS ₁ can be converted from the basic sequence R ₁ through cyclic shift or phase rotation. Sequence R to modulate the PUCCH symbol _{'2 (second} sequence) is the same as the basic sequence R _2, or a sequence R' ₁ is to convert the base sequence R ₁ through cyclic shift or phase rotation Can be done.

In embodiments of the present disclosure, PUCCH and RS can be offset and multiplexed in many different ways. For illustration, FIGS. 14A-14E show some exemplary multiplexing schemes in the frequency domain. As shown in FIG. 14A, RS and PUCCH can be alternated and multiplexed for each RE, i.e. one RS for one PUCCH. In Figure 14B, RS and PUCCH is alternately shifted for every k number of RE can be multiplexed, i.e., one RS is the relative k-number of PUCCH, _{c i} and _{d m} are the same UE Or a modulation symbol that can come from a different UE. FIG. 14C shows another example of a multiplexing method similar to that of FIG. 14B, but in FIG. 14C, PUCCHs are not continuous in frequency but separated by DMRS. FIG. 14D further shows a further exemplary multiplexing method, in which RS and PUCCH use different length sequences and one PUCCH uses one RS. FIG. 14E shows a further exemplary multiplexing scheme according to a further embodiment of the present disclosure. In FIG. 14E, PUCCH is not separated by DMRS and is continuous in frequency, which means that DMRS is also continuous in frequency.

In the following, for the sake of description, a common representation of one UL symbol transmission is shown, where d _mn (m> = 0, n> = 0) indicates the modulation symbol of the information bit. For a given m or n, the symbols can be the same, in other words:
d _mi = d _mj or d _in = d _jn
In addition, the symbol can have different phase rotations, for example.
d _mi = e ^jkθ * d _mj or d _in = e ^jkθ * d _jn
The symbols can have a different order. For example, as shown below, one has ascending order and the other has descending order.
d ₀₀ = d _1n , d ₀₁ = d _1n-1 , ... .. .. d _0n = d ₁₀
Also, the symbols may be completely different.

For the RS sequence R _mn (m> = 0, n> = 0), the sequence is also the same for a given m or n. In another embodiment of the present disclosure, the RS sequence R _mn can be different for a given m or n. In addition, the symbols may be based on the same basic sequence and may have different phase rotation values or cycle shift values.

15A-15F schematically show an exemplary resource mapping method according to an embodiment of the present disclosure. As shown in FIG. 15A, both the sequence-based DMRS sequence and the modulated PUCCH are mapped in sequence, for example. The modulated PUCCH symbols are d ₀₀ , d ₀₁ . .. .. d _0n , d ₁₀ , d ₁₁ , ... .. .. d _1n ,. .. .. d _m0 , d _m1 ,. .. .. Mapped in the order of d _mn , the DMRS sequence is R ₀₀ , R ₀₁ . .. .. R _0n , R ₁₀ , R ₁₁ ,. .. .. R _1n ,. .. .. d _m0 , d _m1 ,. .. .. It is mapped in the order of d _mn. On the other hand, in FIG. 15B, the sequence-based DMRS sequence and the modulated PUCCH are mapped from the edge of the band.

In embodiments of the present disclosure, PUCCHs with DMRS can be placed on physical resource blocks (PRBs) in a predetermined order within a predefined RB. For example, as shown in FIG. 15C, different PUCCH symbols can be placed in different PRBs. As shown in FIG. 15D, PUCCH symbols can be mapped to both edges of the system band for frequency diversity. In Figure 15D, DMRS R ₀ and PUCCH d ₀ * R _'1 is mapped to a first edge of the system band. DMRS R ₁ and PUCCH d ₁ * R _'1 is mapped to the second edge of the system band, DMRS R ₂ and PUCCH d ₂ * R' ₂ is mapped to a first edge of the rest of the system band, DMRS R ₃ and PUCCH d ₃ * R _'3 are mapped to the second edge of the rest of the system, and so forth.

In another embodiment of the present disclosure, a copy of PUCCH and DMRS can be placed on the PRB. For example, as shown in FIG. _{15E, DMRS R 00, R 10} , or _{R m0} and _{PUCCH d 0 * R '00,} d 1 * R' 10 to _d m * R _'m0 is the beginning of the system band first mapped on the edge, the _DMRS R _{01, R 11} to _{R m1} and _{PUCCH d 0 * R '01,} d 1 * R' 11 to _d m * R _'m1 second opposite edge of it from the system band It is mapped and the same applies below. Further, FIG. 15F, another resource mapping scheme is also shown, _DMRS R _{00, R 10} to _{R m0} and _{PUCCH d 0 * R '00,} d 1 * R' 10 to _d m * R _'m0 is similar to FIG. 15E the first mapped from the first edge of the system _{band, DMRS R m1, R m-} 11 to _{R 01} and _{PUCCH d 0 * R '01,} d 1 * R' m1 to _d m * R ' ₀₁ is then mapped from the second opposite edge of the system band in a different order than in FIG. 15E, and so on. In addition, replication of PUCCH in different PRBSs can also be placed on the PRBs, as shown in FIG. 15A or FIG. 15B.

It should also be noted that the mapping order (eg hopping) can be changed in a predefined order for different symbols / subframes / PRBs.

As described above, the present disclosure will be described mainly with reference to one UL symbol design. In fact, it can also be used in the frame design of L UL symbols. This means that the subframe can have reduced UL symbols, but the number of UL symbols is greater than one.

For each of the L UL symbols, PUCCH and DMRS can be staggered and multiplexed in the same way, for example as shown in FIG. 16A. Alternatively, as shown in FIG. 16B, the two symbols may have hopping. Further, for M (1 = <M <= L) symbols in L symbols, the PUCCH and RS sequences may be multiplexed by staggering one or more frequencies for each RE. Yes, other (LK) symbols can be used for PUCCH, as shown in FIG. 16C.

In another embodiment of the present disclosure, the PUCCH and RS sequences can be multiplexed in a time-staggered manner. In other words, M (1 <= M <= L) symbols can be used for RS (consecutive or staggered), and the others are PUCCH as shown in FIG. 16D. Can be used for.

17A and 17B show the mapping of PUCCH and RS in the sequence, and FIGS. 17C and 17D show the mapping of PUCCH and DMRS from the edge of the system band. From FIGS. 17A and 17B, it can be seen that in the case of L UL symbols, PUCCH and DMRS are temporally multiplexed and placed on the PRB in a predetermined order. For example, PUCCH with DMRS can be mapped in sequence as shown in FIG. 17A, or can be mapped from both edges of the system band as shown in FIG. 17C. In addition, duplicate PUCCH with DMRS can be placed in the PRB. Alternatively, PUCCH and DMRS can be hopping within the symbol as shown in FIGS. 17B and 17D. In addition, for illustration purposes only, FIGS. 18A-18D show the mapping of PUCCH and DMRS within the sequence and the mapping from the edge of the system bandwidth for common representation.

FIG. 19 schematically shows a block diagram of DMRS and PUCCH information transmission according to another embodiment of the present disclosure. In the embodiments of the present disclosure, the PUCCH information symbol is not modulated based on the second sequence and is indicated by the relationship between the first sequence and the second sequence to be transmitted. As shown in FIG. 19, when the DMRS, basic sequence 1 of N length is first converted to R _'1 through conversion, such as cyclic shift or phase rotation, then, it is mapped to a physical resource. At the same time, the PUCCH information bits are first mapped to the information symbol through any of the constellation mappings as shown in FIG. Sequence R _'2 is converted from the basic sequence 2 of M length, for example, be cyclic shift or phase rotation from the basic sequence 2. Next, the sequence R _'2 results are mapped to the physical resources. In this solution, information symbols d _i are not further multiplied to a similar sequence R _'2 and FIG. Instead, the information symbol d _i is implied by the relationship between the sequences R _'1 and sequence R' _2. Next, R _'2 are, DMRS sequence R' are transmitted with _one.

Figure 20 is a new PUCCH configuration in accordance with an embodiment of the present disclosure is schematically illustrated, information symbols d _i is implied by the relationship between the sequences R _'1 and sequence R' _2, the reference signal and UL control information such as ACK / NACK is multiplexed by staggering in the frequency domain.

As shown in FIG. 20, in this embodiment of the present disclosure, the basic sequences 1 and 2 have the same length N. The two sequences R ₁ and R ₂ may be different, transformed, cyclically shifted, or phase rotated from the same base sequence. The basic sequences 1 and 2 may be, for example, the basic sequences as shown in FIG. However, it should be understood that other basic sequences are possible. The PUCCH (eg, ACK / NACK) bits {0,1} are first modulated into PUCCH symbols after the constellation mapping, for example BPSK {+1, -1}. Then, modulated symbols are implied by the relationship between the sequence R _'1 and R' _2. This relationship may be reflected, for example, in a cyclic shift that can be expressed as:
^{_{R 'n = e jαn R n}} , 0 ≦ n ≦ 11 α = 2πk / 12,0 ≦ k ≦ 11
If the sequence R _'1 and R' _2, they can use a different cycle shift, which can be expressed by the following equation.
_{^{e j2πk1 / 12 R n 'e}} j2πk1 / 12 R n
Here, k1 and k2 are CS indexes of _{R n.} When k1-k2 = 6, the information symbol is +1 and when k1-k2 = -6, the information symbol is -1. In this way, PUCCH information symbols can be represented implicitly by the relationship between the sequences R _'1 and R' _2. In such a case, the total number of REs to imply PUCCH to be transmitted is 24 (2N).

PUCCH mapping and multiplexing are similar to the embodiments shown in FIG. 9, and therefore can be referred to in FIGS. 10-18 for details.

21-22 further show a further possible solution for DMRS and PUCCH information transmission according to a further embodiment of the present disclosure, in which the sequence is divided into k different groups and the modulated PUCCH symbols are predefined. Indicated by the group.

PUCCH information bits are represented by _{d i} obtained after the constellation mapping. If the modulation order is M, then it is completely ^2M symbols. There are Q sequences that can be used. This Q sequence is grouped into K groups (K = Q / M), and each group kj corresponds to one modulation symbol as shown in FIG. Therefore, different sequence groups are used for different modulation symbols.

FIG. 22 more schematically shows constellation mapping of QPSK according to one embodiment of the present disclosure. As shown in FIG. 22, the four sequence groups k1 to k4 are mapped to four NACK / ACK symbols.

The Q sequence is through different basic sequences, different cyclic shifts of one or more basic sequences, or different transformations of one or more basic sequences, such as phase rotation (R ₁ = e ^jθ * R ₂ ). Good. These sequences can be staggered or continuously mapped in the frequency or time domain. The total number of REs for implicitly transmitting PUCCH information is N.

23 to 24 show specific embodiments of cyclic shift grouping according to one embodiment of the present disclosure. FIG. 23 shows two different cyclic shift groups. As shown in FIG. 23, the twelve cyclic shifts are divided into four groups indicated by different patterns. The twelve cyclic shifts can be expressed as follows.
^{_{R 'n = e jαn R n}} , 0 ≦ n ≦ 11 α = 2πk / 12,0 ≦ k ≦ 11

In one possible grouping, cyclic shifts 0-2 are in the first group, cyclic shifts 3-5 are in the second group, cyclic shifts 6-8 are in the third group, and cyclic shifts 9-11 are in the fourth. Divided into groups. FIG. 24 schematically shows an ACK / NACK constellation mapping corresponding to cyclic shift grouping as illustrated in FIG. 21 according to an embodiment of the present disclosure. As shown in FIG. 24, the four cyclic shift groups are mapped to QPSK {+ 1, -1, + j, -j}, respectively.

Further, in FIG. 23, the cyclic shifts 0, 4, and 8 are divided into the first group, the cyclic shifts 1, 5, and 9 are divided into the second group, and the cyclic shifts 2, 6 and 10 are divided into the third group. Indicates another possible grouping in which the cyclic shifts 3, 7 to 11 are divided into a fourth group. It should be understood that in addition to the possible grouping examples, cyclic shifts can be split in other suitable ways. In this way, different cyclic shift groups can be used to indicate different PUCCH symbols. In addition, different UEs may use different cyclic shifts within the cyclic shift group to indicate their PUCCH symbol. If the basic sequence is 12, the total number of REs for implicitly transmitting PUCCH is 12.

FIG. 25 schematically shows a new PUCCH configuration according to an embodiment of the present disclosure. As shown, PUCCH information symbols are implied by involving a predetermined conversion, such as the phase rotation (PR) or a cyclic shift (CS) R _'n. R _'n is mapped to physical resources, it is transmitted by the UL symbol.

It should be understood that PUCCH information can be mapped to L symbols (L> = 1), where L can be a predefined value. L can be dynamically or semi-statically notified by a base station such as an eNB, in which case a bit can be provided in the dynamic control area or RRC message. In addition, the PUCCH resource index can be predefined by the eNB or notified dynamically or semi-statically. Note that the sequences and / or mapping sequences may be different or the same in the PRBs or symbols. OCC, phase rotation, etc. can be used with PRBs or symbols.

In addition, the PUCCH subcarrier spacing can be different from other symbols. New modulations can also be used. Certain coefficients, such as 8PSK, can be used to maintain low PAPR with one or more symbols. In addition, the PUCCH sequence length can be adapted to different payloads.
In one embodiment of the disclosure, PUCCHs are grouped, some modulated by ZC / PN sequences or represented by cyclic shifts, others represented by different sequences, or FIG. 26A and As shown in 26B, it is not modulated on the sequence. Usually, important PUCCH information is modulated with a DMRS sequence for accurate results. For example, ACK / NACK is more important than CSI, so it may be modulated on the ZC / PN sequence or expressed in cyclic shifts. In contrast, CSI is less important, so CSI is not modulated in the ZC / PN sequence. The ZC / PN sequence for ACK / NACK can be used as a demodulated RS for CSI, which can gain some additional benefits of PUCCH without the available reference signal. In some cases, the UL control information and the reference signal may be transmitted at different time intervals, and in other cases, not all the UL control information may be transmitted together with the reference signal. However, in either of the two cases, there may be a PUCCH with no reference signal available. In such cases, it is possible to use the previous reference signal, for example the reference signal closest to it. As an alternative, the sequence for previous control information can also be used, as the received sequence itself carries channel information that can be used as RS for other PUCCHs. In certain embodiments of the present disclosure, a reference signal for UL control information without an available reference signal, from the previous reference signal and the previous control information to the UL control information, without an available reference signal. It can be determined depending on the time interval. That is, if the PUCCH has a shorter time interval from the previous PUCCH than from the previous RS, the sequence for the previous PUCCH can be used as the reference signal for the PUCCH. As a result, highly accurate PUCCH information can be obtained. This solution can be used with any of the PUCCH transmission solutions as described above to achieve higher accuracy.

FIG. 27A shows one possible UL region design according to an embodiment of the present disclosure. It is assumed that there are N symbols for UL, M symbols for UL control (PUCCH), and L symbols for DMRS (L> = 0). In one embodiment of the present disclosure, one or more symbols / PRBs can be modulated by a ZC / PN sequence or by cyclic shift of a ZC / PN sequence. As shown in FIG. 27A, in the case of M symbols PUCCH, K symbols are modulated on the ZC / PN sequence or modulated by the cyclic shift of the ZC / PN sequence (K> = 0). To. The other MK symbols may be any kind of control information. FIG. 27B also shows another possible UL region design according to the embodiments of the present disclosure, with one symbol for DMRS and one symbol for modulated PUCCH. The DMRS and / or PUCCH symbols can be continuous or staggered. Note that the location of DMRS, PUCCH and data may differ from those shown in FIGS. 27A and 27B.

Further, in embodiments of the present disclosure, one or more DMRSs can be provided within the window time for demodulation, as shown in FIGS. 28A-28C. In one embodiment of the present disclosure, in window time, there may be multiple subframes as shown in FIG. 28A, or multiple symbols as shown in FIG. 28B, or earlier as shown in FIG. 28C. It may be combined with the solution of. The window time value may be predefined or dynamically / semi-statically notified.

The solution of UL information transmission has been mainly described above. The present disclosure also provides a method of receiving UL information as described with reference to FIG.

As shown in FIG. 29, method 2900 can start from step 2910, which first receives the reference signal transmitted using the first sequence. The first sequence of reference signals can have a basic sequence as shown in FIG. 6, may be one of the sequences shown in FIG. 11, or another sequence having frequency domain orthogonality. It may be. The first reference signal may be a sequence transformed from the basic sequence by cyclic shift, phase rotation or any other transformation. Further, the reference signal may be, for example, a DMRS signal or another reference signal.

In step 2920, the control information transmitted using the second sequence is received. Similarly, the second sequence of control information can have a basic sequence as shown in FIG. 6, may be one of the sequences of FIG. 11, or has frequency domain orthogonality. It may be a sequence of. The second reference signal may be a sequence transformed from the basic sequence by cyclic shift, phase rotation or other transformation. The first and second sequences may be the same or share the same basic sequence. Alternatively, the first sequence and the second sequence have different basic sequences having the same or different lengths. For example, the first sequence can have a basic sequence as shown in FIG. 6, while the second sequence can be one of the sequences as shown in FIG. The control information may be PUCCH information such as NACK / ACK, CQI, PMI, RI.

Next, in step S2930, the control information is demodulated using the reference signal. In particular, the reference signal and the UL control information are multiplexed by staggering in the frequency domain. In one embodiment of the present disclosure, demodulating the control information further comprises using the channel information with the second sequence to acquire the UL control information, the channel information using the first sequence. Obtained from the reference signal by. That is, the control information bit can be acquired by first acquiring the channel information from the reference signal based on the first sequence and then demodulating the channel information and the received control information based on the second sequence. ..

In another embodiment of the present disclosure, demodulating control information comprises using channel information to obtain a second sequence, which is obtained from a reference signal using the first sequence. The control information is acquired based on the relationship between the first sequence and the second sequence. In such a case, after acquiring the channel information based on the reference signal, the second sequence is further acquired based on the channel information, and then the relationship between the first sequence and the second sequence is the control information. Further determine the relationship that implicitly indicates. Therefore, in this embodiment, the information bits are implicitly transmitted. In other words, the information bits themselves are not multiplexed with the second sequence and are implicitly indicated by the first and second sequences.

In embodiments of the present disclosure, the reference signal and UL control information are multiplexed in a staggered manner in many different ways. For example, the reference signal and the UL control information can be multiplexed by staggering each resource element using one reference signal for one UL control information. Another option is to alternate and multiplex the reference signal and UL control information for each of the two or more resource elements using one reference signal shared by two or more parts of the UL control information. Can be done.

In embodiments of the present disclosure, UL control information and reference signals are mapped in any suitable manner. For example, UL control information and reference signals can be mapped to both edges of the system bandwidth. In addition to or instead, UL control information and reference signals can be hopping at two symbols.

In an embodiment in which the UL control information and the reference signal are transmitted at different time intervals, or not all the UL control information is transmitted together with the reference signal, one of the previous reference signal and the sequence of the previous control information is It is used as a reference signal for demodulating UL control information without an available reference signal. In such a case, the method refers to the UL control information without an available reference signal and without an available reference signal that depends on the previous reference signal and the time interval from the previous control information to the UL control information. It can be further prepared to determine the signal.

Some details about PUCCH design, first sequence, second sequence, staggered multiplexing, resource mapping, etc. have already been described in detail with reference to FIGS. 8-28, and these details. Will not be detailed here. For the purposes of simplification and for details thereof, refer to FIGS. 8 to 28 for description.

In embodiments of the present disclosure, the uplink information is transmitted with reduced uplink symbols to provide a new solution for UL transmission and reception that can adapt to the reduced subframe configuration of the uplink symbols. Therefore, the transmission waiting time can be significantly reduced.

FIG. 30 schematically shows a block diagram of an apparatus for transmitting UL information according to an embodiment of the present disclosure. As shown in FIG. 30, the device 3000 includes a reference signal transmission unit 3010 and a control information transmission unit 3020. The reference signal transmission unit 3010 can be configured to transmit a reference signal using the first sequence. The control information transmission unit 3020 can be configured to transmit UL control information using the second sequence. In particular, the reference signal and the UL control information are multiplexed by staggering in the frequency domain.

In one embodiment of the present disclosure, UL control information is modulated based on a second sequence, meaning that bits of UL control information are implicitly transmitted. In another embodiment of the present disclosure, the first sequence and the second sequence can have a predetermined relationship used to implicitly indicate UL control information.

In the embodiments of the present disclosure, the first sequence and the second sequence share the same or the same basic sequence. Alternatively, the first sequence and the second sequence can have different basic sequences.

In embodiments of the present disclosure, the reference signal and UL control information can be staggered and multiplexed in any suitable manner. For example, one reference signal may be used for one UL control information, and the reference signal and the UL control information may be multiplexed by staggering each resource element, or the reference signal and the UL control information may be multiplexed. With, one reference signal shared by more than one portion of the UL control information can be used to stagger and multiplex more than one resource element.

In embodiments of the present disclosure, the reference signal and UL control information can be mapped in any suitable manner. In one embodiment of the present disclosure, UL control information and reference signals are mapped across the system bandwidth. In another embodiment of the present disclosure, the UL control information and the reference signal are hopping with two symbols.

In one embodiment of the present disclosure, UL control information and reference signals can be transmitted at different time cycles. In another embodiment of the present disclosure, not all UL control information is transmitted with a reference signal. In both cases, it means that there is some UL control information with no reference signal available. In such a case, one of the previous control signals and one of the previous control information control signals can be used as reference signals for UL control information without available reference signals. In one embodiment of the present disclosure, the reference signal for UL control information without an available reference signal ranges from the previous reference signal and the previous control information to the UL control information without an available reference signal. Depends on the time interval.

FIG. 31 further shows a device for receiving UL information. As shown in FIG. 31, the device 3100 includes a reference signal receiving unit 3110, a control information receiving unit 3120, and a demodulating unit 3130. The reference signal receiving unit 3110 may be configured to receive the reference signal transmitted using the first sequence. The control information receiving unit 3120 may be configured to receive the control information transmitted using the second sequence. The demodulation unit 3130 may be configured to demodulate control information using a reference signal. In particular, the reference signal and the UL control information are multiplexed in a staggered manner in the frequency domain.

In one embodiment of the present disclosure, the demodulation unit 3130 is further configured to use channel information with a second sequence to acquire UL control information, which is referenced by using the first sequence. Obtained from the signal.

In another embodiment of the present disclosure, the demodulator 3130 uses the first sequence to obtain a second sequence using the channel information obtained from the reference signal, the first sequence and the second sequence. It is further configured to acquire control information based on the relationship with.

In one embodiment of the present disclosure, the first and second sequences may be the same or share the same basic sequence. In another embodiment of the present disclosure, the first sequence and the second sequence can have different basic sequences.

In one embodiment of the present disclosure, the reference signal and the UL control information are multiplexed in a staggered manner for each resource element having one reference signal for one UL control information. In another embodiment of the present disclosure, the reference signal and the UL control information are staggered for each of the two or more resource elements using one reference signal shared by two or more parts of the UL control information. It will be multiplexed.

In one embodiment of the disclosure, the UL control information and the reference signal are mapped to both edges of the system bandwidth. In another embodiment of the present disclosure, the UL control information and the reference signal can be hopping with two symbols.

In one embodiment of the present disclosure, one of a previous reference signal followed by a sequence of previous control information can be used as a reference signal for demodulating UL control information without an available reference signal. .. In such a case, device 3100 is configured to determine a reference signal for UL control information without an available reference signal that depends on the time interval from the previous reference signal to the previous control information. A signal determination unit 3140 is further provided. The time interval is the time interval for UL control information without a reference signal available.

The apparatus 3000 and the apparatus 3100 have been briefly described above with reference to FIGS. 30 and 31. It should be noted that the devices 3000 and 3100 may be configured to implement features as described with reference to FIGS. 8-29. Therefore, for details on the operation of the modules in these devices, reference can be made to the description of each step of the method described with reference to FIGS. 8-29.

Further note that the components of devices 3000 and 3100 may be embodied in hardware, software, firmware, and / or any combination thereof. For example, the components of devices 3000 and 3100 may be implemented by circuits, processors or any other suitable selection device, respectively. Those skilled in the art will appreciate that the above examples are for illustration purposes only.

In some embodiments of the present disclosure, the devices 3000 and 3100 may include at least one processor. At least one processor suitable for use in the embodiments of the present disclosure can include, for example, both general purpose and dedicated processors known or developed in the future. The devices 3000 and 3100 may further include at least one memory. The at least one memory can include, for example, a semiconductor memory device such as a RAM, ROM, EPROM, EEPROM, flash memory device. At least one memory may be used to store a program of computer executable instructions. This program can be written in any high-level and / or low-level compatible or interpretable programming language. According to embodiments, the computer executable instructions may be configured to use at least one processor to cause the devices 3000 and 3100 to perform operations according to the methods described with reference to at least each of FIGS. 8 to 29. it can.

FIG. 32 further shows a simplified block diagram of a device 3210 that may be embodied as a UE-like terminal device for a wireless network within a wireless network or contained therein. A base station such as the NB or eNB described herein.

Device 3210 comprises at least one processor 3211, such as a data processor (DP) and at least one memory (MEM) 3212 coupled to processor 3211. The device 3210 may further include a transmitter TX and a receiver RX 3213 coupled to the processor 3211, and the processor 3211 may be communicatively connected to the device 3220 to operate. The MEM 3212 stores the program (PROG) 3214. PROG 3214 can include instructions that allow the device 3210 to operate according to embodiments of the present disclosure, for example, to perform method 800 when executed on the associated processor 3211. The combination of at least one processor 3211 and at least one MEM 3212 can form processing means 3215 adapted to implement the various embodiments of the present disclosure.

The device 3220 comprises at least one processor 3221, such as a DP, and at least one MEM 3222 coupled to the processor 3221. The device 3220 may further include a suitable TX / RX 3223 coupled to the processor 3221, which can operate to communicate wirelessly with the device 3210. MEM3222 stores PROG3224. PROG 3224 may include instructions that allow the device 3220 to operate in accordance with embodiments of the present disclosure, eg, instructions for performing method 2900, when executed on the associated processor 3221. The combination of at least one processor 3221 and at least one MEM 3222 can form processing means 3225 adapted to implement the various embodiments of the present disclosure.

Various embodiments of the present disclosure may be performed by a computer program that can be executed by one or more processors 3211, 3221, software, firmware, hardware, or a combination thereof.

The MEM 3212 and 3222 may be of any type suitable for the local technology environment and are implemented using any suitable data storage technology such as semiconductor-based memory devices, magnetic memory devices and systems, optical memory devices and systems. It can include, but is not limited to, memory, and removable memory.

Processors 3211 and 3321 may be of any type suitable for the local technical environment and include one or more of general purpose computers, dedicated computers, microprocessors, digital signal processor DSPs and processors based on the multi-core processor architecture. Is a non-limiting example.

Further, the present disclosure can also provide a carrier comprising a computer program as described above, wherein the carrier is one of an electronic signal, an optical signal, a wireless signal, or a computer-readable storage medium. Computer-readable storage media include, for example, optical compact discs or electronic memory devices such as RAM (random access memory), ROM (read-only memory), flash memory, magnetic tape, CD-ROM, DVD, and Blu-ray disc.

In the techniques described herein, an apparatus that implements one or more functions of the corresponding device described in one embodiment implements not only the means of the prior art but also the corresponding one or more functions. The device may be provided with separate means for each separate function, or means that may be configured to perform two or more functions. For example, these techniques may be implemented in hardware (s), firmware (s), software (s), or a combination thereof. In the case of firmware or software, implementation can be done via modules (eg, procedures, functions, etc.) that perform the functions described herein.

Exemplary embodiments of the present specification are described above with reference to block diagrams and flowcharts of methods and devices. It will be appreciated that each block of the block diagram and flowchart, as well as the combination of blocks in the block diagram and flowchart diagram, can be implemented by a variety of means, including computer program instructions. These computer program instructions can be general purpose computers, dedicated computers, or other programmable instructions so that instructions executed on a computer or other programmable data processing device create a means for performing a specified function. Loaded into a data processor and in one or more blocks of the flowchart.

Although the present specification includes many specific implementation details, these should not be construed as a limitation of the scope of the implementation or the claims, and are features specific to a particular embodiment of a particular implementation. Should be interpreted as a description of. The particular features described herein in the context of separate embodiments may be implemented in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment can also be implemented separately in multiple embodiments or in any suitable subcombination. Moreover, the features are described above as acting in a particular combination, and even those initially claimed to do so, in some cases, one or more features from the claimed combination. Can be cut out from a combination, or can include sub-combination variations.

It will be apparent to those skilled in the art that the concepts of the present invention can be implemented in various ways as technology advances. The embodiments described above are provided for illustration purposes without limitation of the present disclosure and can be modified and modified without departing from the spirit and scope of the present disclosure, as will be readily appreciated by those skilled in the art. Please understand that there is. Such modifications and variations are considered to be within the scope of the disclosure and attachment claims. The scope of protection of this disclosure is defined by the appended claims.

Claims (20)

It is a method performed by the UE (User Equipment).
To generate the first sequence by multiplying the second sequence by e ^jαn (where 0 ≦ n ≦ 11),
To transmit the PUCCH (Physical Uplink Control Channel) generated based on the first sequence to the base station, and to transmit the PUCCH (Physical Uplink Control Channel) to the base station.
With
The second sequence is the base sequence R (n).
The value of cyclic shift α is determined based on the value of k, and the value of k corresponds to a 2-bit pair of HARQ (Hybrid Automatic Repeat Request) -ACK (Acknowledgement) information bit values, and the HARQ- Each of the ACK information bits is either 0 indicating NACK or 1 indicating ACK.
α = 2πk / 12 (where 0 ≦ k ≦ 11),
Method. The base sequence R (n) is defined by ^{R (n) = e jφ (n) π / 4.}
The value of φ (n) varies between -1, 1, -3, or 3 depending on the value of n.
The method according to claim 1. The first sequence is mapped to a resource element without being multiplied by a symbol modulated from the HARQ-ACK information bit.
The method according to claim 1 or 2. The PUCCH is transmitted without frequency division multiplexing with DMRS (Demodulation Reference Signal).
The method according to any one of claims 1 to 3. The PUCCH is transmitted without time division multiplexing with the DMRS.
The method according to claim 4. A pair of 2 bits of the value of the first HARQ-ACK information bit corresponding to the value of k of any of {0, 1, 2}, and
A pair of 2 bits of the value of the second HARQ-ACK information bit corresponding to the value of k of any of {3, 4, 5}, and
A 2-bit pair of the values of the third HARQ-ACK information bit corresponding to the value of k in any of {6, 7, 8}, and
The 2-bit pair of the values of the fourth HARQ-ACK information bit corresponding to the value of k in any of {9, 10, 11} is
Different from each other in the same symbol in the time domain,
The method according to any one of claims 1 to 5. The first value of k corresponding to the 2-bit pair of the values of the HARQ-ACK information bit represented by 2 bits 00, and
The difference from the second value of k corresponding to the 2-bit pair of the values of the HARQ-ACK information bits indicated by 2 bits different from 00 is
It is a multiple of 3,
The method according to any one of claims 1 to 6. The value of k, which corresponds to a 2-bit pair of values of the HARQ-ACK information bit, is unique to the UE in the same symbol in the time domain.
The method according to any one of claims 1 to 7. The PUCCH transmission has a time length of 1 symbol or 2 symbols.
The method according to any one of claims 1 to 8. The value of k corresponds to a 2-bit pair of values of the HARQ-ACK information bit in the same symbol in the time domain.
The method according to any one of claims 1 to 9. UE (User Equipment)
The first sequence is generated by multiplying the second sequence by e ^jαn (where 0 ≦ n ≦ 11).
The PUCCH (Physical Uplink Control Channel) generated based on the first sequence is configured to be transmitted to the base station.
The second sequence is the base sequence R (n).
The value of cyclic shift α is determined based on the value of k, and the value of k corresponds to a 2-bit pair of HARQ (Hybrid Automatic Repeat Request) -ACK (Acknowledgement) information bit values, and the HARQ- Each of the ACK information bits is either 0 indicating NACK or 1 indicating ACK.
α = 2πk / 12 (where 0 ≦ k ≦ 11),
UE. The base sequence R (n) is defined by ^{R (n) = e jφ (n) π / 4.}
The value of φ (n) varies between -1, 1, -3, or 3 depending on the value of n.
The UE according to claim 11. The first sequence is mapped to a resource element without being multiplied by a symbol modulated from the HARQ-ACK information bit.
The UE according to claim 11 or 12. The PUCCH is transmitted without frequency division multiplexing with DMRS (Demodulation Reference Signal).
The UE according to any one of claims 11 to 13. The PUCCH is transmitted without time division multiplexing with the DMRS.
The UE according to claim 14. A pair of 2 bits of the value of the first HARQ-ACK information bit corresponding to the value of k of any of {0, 1, 2}, and
A pair of 2 bits of the value of the second HARQ-ACK information bit corresponding to the value of k of any of {3, 4, 5}, and
A 2-bit pair of the values of the third HARQ-ACK information bit corresponding to the value of k in any of {6, 7, 8}, and
The 2-bit pair of the values of the fourth HARQ-ACK information bit corresponding to the value of k in any of {9, 10, 11} is
Different from each other in the same symbol in the time domain,
The UE according to any one of claims 11 to 15. The first value of k corresponding to the 2-bit pair of the values of the HARQ-ACK information bit represented by 2 bits 00, and
The difference from the second value of k corresponding to the 2-bit pair of the values of the HARQ-ACK information bits indicated by 2 bits different from 00 is
It is a multiple of 3,
The UE according to any one of claims 11 to 16. The value of k, which corresponds to a 2-bit pair of values of the HARQ-ACK information bit, is unique to the UE in the same symbol in the time domain.
The UE according to any one of claims 11 to 17. The PUCCH transmission has a time length of 1 symbol or 2 symbols.
The UE according to any one of claims 11 to 18. The value of k corresponds to a 2-bit pair of values of the HARQ-ACK information bit in the same symbol in the time domain.
The UE according to any one of claims 11 to 19.

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