WO2016127409A1 - Method for transmitting uplink control information, user equipment and access network device - Google Patents

Abstract

Provided are a method for transmitting uplink control information, a user equipment and an access network device. The method comprises: respectively performing cyclic shift on each group of modulation symbols in L1 groups of modulation symbols, wherein a cyclic shift value used by the ith group of modulation symbols in the L1 groups of modulation symbols during the cyclic shift is Kφ_i, where 1 ≤ i ≤ L1; respectively performing cyclic shift on each group of modulation symbols in L2 groups of modulation symbols, wherein a cyclic shift value used by the jth group of modulation symbols in the L2 groups of modulation symbols during the cyclic shift is Kφ_j, where 1 ≤ j ≤ L2, φ_i and φ_j both represent a cell-specific basic cyclic shift value of a current cell, and K is a positive integer greater than 1; and transmitting uplink control information borne in the L1 groups of shifted modulation symbols and the L2 groups of shifted modulation symbols to an access network device via K RBs in a first time slot and K RBs in a second time slot of an uplink subframe. In the embodiments of the present invention, by extending an existing PF3 of a single RB to a PF3 of a plurality of RBs, it is possible to support aggregation of more carries and support an ACK/NACK feedback of more bits.

Description

Method for transmitting uplink control information, user equipment, and access network equipment Technical field

The embodiments of the present invention relate to the field of wireless communications, and in particular, to a method for transmitting uplink control information, a user equipment, and an access network device.

Background technique

The Long Term Evolution (LTE) system downlink and uplink are based on Orthogonal Frequency Division Multiplexing Access (OFDMA) and Single Carrier-Frequency Division Multiplexing Access (Single Carrier-Frequency Division Multiplexing Access, respectively). SC-FDMA), time-frequency resources are divided into OFDM or SC-FDMA symbols (hereinafter referred to as time-domain symbols) in the time domain dimension and sub-carriers in the frequency domain dimension, and the smallest resource granularity is called a resource element (Resource Element , RE), which represents a time domain symbol on the time domain and a time-frequency grid consisting of one subcarrier on the frequency domain. The transmission of services in the LTE system is based on base station scheduling. The basic time unit of scheduling is one subframe, and one subframe includes multiple time domain symbols. The specific scheduling process is that the base station sends a control channel, such as a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH), and the control channel can carry a physical downlink shared channel (Physical Downlink Shared). Channel, PDSCH) or scheduling information of a physical uplink control channel (PUSCH), the scheduling information includes control information such as resource allocation information, and an adjustment coding manner. The user equipment (User Equipment, UE) detects the control channel in the subframe, and performs downlink data channel reception or uplink data channel transmission according to the detected scheduling information carried in the control channel.

LTE supports two types of duplex modes: Frequency Division Multiplexing (FDD) and Time Duplexing Division (TDD). For FDD, the downlink and uplink are transmitted on different carriers. For the TDD system, the uplink and the downlink are transmitted at different times of the same carrier, and specifically include a downlink subframe, an uplink subframe, and a special subframe on one carrier, wherein the special subframe includes a downlink pilot slot (Downlink Pilot Time). Slot, DwPTS), Guard Period (GP) and Uplink Pilot Time Slot (UpPTS). The GP is mainly used for downlink to uplink device conversion time and propagation delay compensation. In addition, downlink data can be transmitted in the DwPTS, but the PUSCH cannot be transmitted in the UpPTS. LTE Currently, 7 different TDD uplink and downlink configurations are supported, as shown in Table 1, where D represents a downlink subframe, S represents a special subframe, and U represents an uplink subframe.

Table 1. Different TDD uplink and downlink configurations in the LTE system

The LTE adopts the Hybrid Automatic Repeat Request (HARQ) mechanism. In the following example, after receiving the PDSCH, the UE feeds back the ACK on the PUCCH if the reception is correct. If not, the NACK is fed back on the PUCCH. For FDD, after receiving the PDSCH in subframe n-4, the UE will feed back ACK/NACK in subframe n; for TDD, the timing relationship between PDSCH reception and its corresponding ACK/NACK feedback is shown in Table 2, The frame is an uplink subframe n for feeding back ACK/NACK, and the number of the identifier indicates an ACK/NACK corresponding to the PDSCH in the downlink subframe set in which the feedback nk (k belongs to K) in the uplink subframe n, for example, up and down K={7, 6} in the subframe n=2 of the row configuration 1 indicates that the uplink subframe n=2 is used to feed back the ACK/NACK corresponding to the PDSCH on the two downlink subframes n-7 and n-6. The specific n-7 is the downlink subframe 5, and the n-6 is the downlink subframe 6.

Table 2. Timing relationship between PDSCH and its corresponding ACK/NACK in TDD system

LTE also supports Carrier Aggregation (CA) technology, in which a base station allocates multiple carriers to one UE to increase the data rate of the UE. When the CA is performed, the multiple carriers sent by the base station are synchronously transmitted. The UE can separately detect the PDCCH and the corresponding PDSCH for each carrier. The specific detection process of each carrier is similar to the single carrier case. The LTE system supports FDD CA, TDD CA, and FDD+TDD CA. For the TDD CA, it is further divided into a TDD CA with the same uplink and downlink configuration and a TDD CA with different uplink and downlink configurations. There is one primary carrier and at least one secondary carrier in the CA mode, and the PUCCH carrying the ACK/NACK is only transmitted on the primary carrier of the UE. The PUCCH transmission mode in the CA mode includes two modes: a channel selection mode and a PUCCH format 3. In channel selection mode, PUCCH format 1a/1b is used for ACK/NACK feedback, but the channel selection mode supports CA of two carriers at most, so it is limited in the application mode of CA mode; PUCCH format 3 mode adopts DFT-S- The transmission structure of OFDM can support transmission of 20 ACK/NACK bits and TDD CA of 5 carriers. For example, taking the TDD uplink and downlink configuration 2 of the mainstream deployment in the current network as an example, the uplink subframe 2 of one carrier can support the feedback of 4 ACK/NACK bits, and the CA of the TDD uplink and downlink configuration 2 of the 5 carriers is 20 ACKs. /NACK bit.

As LTE technology continues to evolve, it may be necessary to support more bits of ACK/NACK feedback in the future, such as greater than 20 bits. A scenario is a CA that introduces more carriers, such as a CA of 10 carriers. In this case, taking CA of 10 TDD uplink and downlink configuration 2 as an example, it is necessary to feed back 40-bit ACK/NACK; another scenario is that although most It also supports CA to 5 carriers, but multiple carriers are configured in TDD uplink and downlink configuration 5, for example, the primary carrier is For the uplink and downlink configuration, 2 and 4 secondary carriers are both uplink and downlink configuration 5, so it is necessary to feed back 4+9*4=40 bits of ACK/NACK. Since the current PUCCH format 3 cannot support more than 22 bits of ACK/NACK feedback, how to support more bits (such as 40 bits or more) of ACK/NACK feedback is an urgent problem to be solved.

Summary of the invention

The embodiments of the present invention provide a method for transmitting uplink control information, a user equipment, and an access network device to support more bits of ACK/NACK feedback.

A first aspect provides a method for transmitting uplink control information, including: a user equipment generates a first group of modulation symbols and a second group of modulation symbols carrying uplink control information, wherein the first group of modulation symbols and the second The group modulation symbols each include K×N modulation symbols, K is the number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is one resource block RB. The number of subcarriers included in the user equipment; the user equipment spreads the first group of modulation symbols by using a spreading code with a code length of L1 to obtain an L1 group modulation symbol, and uses a spreading code with a code length of L2 Performing spreading on the second group of modulation symbols to obtain L2 group modulation symbols; and the user equipment cyclically shifting each group of modulation symbols in the L1 group modulation symbols to obtain a shifted L1 group modulation a symbol, wherein a cyclic shift value used by the i-th modulation symbol in the L1 group modulation symbol when cyclically shifting is

1 ≤ i ≤ L1; the user equipment cyclically shifts each set of modulation symbols in the L2 group modulation symbols to obtain a shifted L2 group modulation symbol, where the L2 group modulation symbol The cyclic shift value used by the j group modulation symbols when cyclically shifting

1≤j≤L2,

with

Each indicates a cell-specific basic cyclic shift value of the current cell; the user equipment transmits the bearer to the access network device by using K RBs in the first time slot of the uplink subframe and K RBs in the second time slot. And the uplink control information in the shifted L1 group modulation symbol and the shifted L2 group modulation symbol.

With reference to the first aspect, in an implementation manner of the first aspect, the user equipment accesses the access network device by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot. Transmitting the uplink control information carried in the shifted L1 group modulation symbol and the shifted L2 group modulation symbol, comprising: the user equipment separately discretizing the shifted L1 group modulation symbol Fourier transform DFT, to obtain L1 group modulation symbols after DFT; the user equipment respectively performs DFT on the shifted L2 group modulation symbols to obtain L2 group modulation symbols after DFT; the user equipment will The L1 group modulation symbols after DFT are respectively mapped to L1 in the first slot On the time domain symbol, and the mapped L1 group modulation symbols occupy K RBs in the first time slot; the user equipment maps the DFT group L2 group modulation symbols to the second time slot respectively L2 groups of time domain symbols in the middle, and the mapped L2 group modulation symbols occupy K RBs in the second time slot; the user equipment respectively performs inverse fast Fourier on the mapped L1 group modulation symbols The leaf transforms the IFFT to obtain the L1 group modulation symbols after the IFFT; the user equipment respectively performs IFFT on the mapped L2 group modulation symbols to obtain the L2 group modulation symbols after the IFFT; the user equipment passes the first And transmitting, by the time slot and the second time slot, the IFFT post-L1 group modulation symbol and the IFFT L2 group modulation symbol to the access network device, to transmit the uplink to the access network device Control information.

In conjunction with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the user equipment generates a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, including The user equipment encodes the uplink control information to obtain encoded uplink control information, and the user equipment modulates the encoded uplink control information to obtain the first group of modulation symbols and the first Two sets of modulation symbols.

With reference to the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is passed. And transmitting, by the first time-frequency resource, the number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource part overlapping.

In conjunction with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the user equipment is configured with a first downlink subframe set or a second downlink subframe set, where The number of subframes included in the first downlink subframe set is greater than the number of subframes included in the second downlink subframe set, and the user equipment transmits the first downlink subframe set in the uplink subframe When the corresponding uplink control information is used, the number of RBs occupied by each time slot is greater than the uplink control information corresponding to the second downlink subframe set sent by the user equipment in the uplink subframe. The number of RBs occupied.

In conjunction with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the user equipment is configured with a first downlink subframe set, where the first downlink subframe The set includes a first subset and a second subset, the first subset is a true subset of the second subset, and the user equipment transmits the downlink subgroup in the first subset in the uplink subframe When the uplink control information corresponding to the frame is used, the number of RBs occupied by each time slot is smaller than that of the user equipment in the uplink subframe. The number of RBs occupied by each time slot when transmitting the uplink control information corresponding to the downlink subframe in the second subset.

In conjunction with the first aspect, or any one of the foregoing implementation manners, in another implementation manner of the first aspect, the method further includes: the user equipment is in at least one time domain symbol of the uplink subframe The access network device transmits a demodulation reference signal DMRS, wherein the DMRS sequence in each time domain symbol includes a sequence in which the K segment is generated based on the length N.

In combination with the first aspect or any of the foregoing implementation manners, in another implementation manner of the first aspect, when the value of K is different, the maximum number of bits of uplink control information that can be transmitted by the user equipment is different.

A second aspect provides a method for transmitting uplink control information, including: an access network device acquiring L1 group modulation symbols from L1 time domain symbols in K resource blocks RB in a first time slot of an uplink subframe, Each group of modulation symbols includes K×N modulation symbols, where K is the number of resource blocks RB used to carry uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is 1 RB. The number of subcarriers included in the network device; the access network device acquires L2 group modulation symbols from L2 time domain symbols in the K RBs in the second slot of the uplink subframe, where each group of modulation symbols Include K×N modulation symbols; the access network device respectively performs inverse discrete Fourier transform IDFT on the L1 group modulation symbols to obtain an L1 group modulation symbol after IDFT; L2 group modulation symbols are IDFT, and L2 group modulation symbols after IDFT are obtained; the access network device respectively performs inverse cyclic shift on each group of modulation symbols in the L1 group modulation symbols after the IDFT, to obtain inverse cyclic shift L1 group modulation symbol after the bit, wherein the L1 group after the IDFT Cycle i-th group in the modulation symbols with the cyclic shift is used when the reverse shift value

1 ≤ i ≤ L1; the access network device respectively performs inverse cyclic shift on each group of modulation symbols in the L2 group modulation symbols after the IDFT, and obtains L2 group modulation symbols after inverse cyclic shift, wherein The cyclic shift value used in the inverse cyclic shift of the j-th modulation symbol in the L2 group modulation symbol after IDFT

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell; the access network device despreads the L1 group modulation symbols after the inverse cyclic shift using a spreading code having a code length of L1 to obtain a first group of modulation symbols. The first group of modulation symbols includes K×N modulation symbols; the access network device despreads the L2 group modulation symbols after the inverse cyclic shift using a spreading code with a code length of L2 to obtain a second group. a modulation symbol, the second set of modulation symbols comprising K×N modulation symbols; the access network device acquiring the uplink control information carried in the first group of modulation symbols and the second group of modulation symbols.

With reference to the second aspect, in an implementation manner of the second aspect, the access network device acquires uplink control information of the user equipment that is carried in the first group of modulation symbols and the second group of modulation symbols, including The access network device demodulates the first group of modulation symbols and the second group of modulation symbols to obtain a demodulated coded bit stream; the access network device performs the coded bit stream Decoding to obtain the uplink control information.

In conjunction with the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is passed. And transmitting, by the first time-frequency resource, the number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource part overlapping.

With reference to the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the access network device configures, by the user equipment, a first downlink subframe set or a second downlink a subframe set, where the number of subframes included in the first downlink subframe set is greater than the number of subframes included in the second downlink subframe set, where the access network device receives the uplink subframe When the uplink control information corresponding to the first downlink subframe set is used, the number of RBs occupied by each time slot is greater than that of the access network device receiving the second downlink subframe set in the uplink subframe. The number of RBs occupied by each time slot when the uplink control information is received.

With reference to the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the access network device configures, by the user equipment, a first downlink subframe set, where The first downlink subframe set includes a first subset and a second subset, the first subset is a true subset of the second subset, and the access network device receives the uplink subframe When the uplink control information corresponding to the downlink subframe in the first subset is used, the number of RBs occupied by each slot is smaller than the downlink device in which the access network device transmits the second subset in the uplink subframe. The number of RBs occupied by each time slot when the uplink control information corresponding to the frame.

With reference to the second aspect, or any one of the foregoing implementation manners, in another implementation manner of the second aspect, the demodulation reference signal DMRS sequence in a time domain symbol of the uplink subframe includes a K segment based on a length N The generated sequence.

A third aspect provides a user equipment, including: a generating unit, configured to generate a first group of modulation symbols and a second group of modulation symbols carrying uplink control information, wherein the first group of modulation symbols and the second group The modulation symbols each include K×N modulation symbols, K is the number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is one resource block RB. a number of subcarriers included; a spreading unit configured to spread the first set of modulation symbols using a spreading code having a code length L1 to obtain an L1 group modulation symbol, and using a spreading code having a code length of L2 Transmitting, by the code, the second group of modulation symbols to obtain an L2 group modulation symbol; and the first cyclic shifting unit is configured to cyclically shift each group of the modulation symbols in the L1 group modulation symbols respectively to obtain a shift a L1 group modulation symbol after the bit, wherein the cyclic shift value used by the ith group modulation symbol in the L1 group modulation symbol when cyclically shifting

1 ≤ i ≤ L1; a second cyclic shift unit, configured to cyclically shift each set of modulation symbols in the L2 group modulation symbols to obtain a shifted L2 group modulation symbol, where the L2 group The cyclic shift value used by the j-th modulation symbol in the modulation symbol when cyclically shifting

1≤j≤L2,

with

Each indicates a cell-specific basic cyclic shift value of the current cell; the transmission unit is configured to transmit to the access network device by using K RBs in the first time slot of the uplink subframe and K RBs in the second time slot. And carrying the uplink control information in the shifted L1 group modulation symbol and the shifted L2 group modulation symbol.

With reference to the third aspect, in an implementation manner of the third aspect, the transmitting unit is specifically configured to perform a discrete Fourier transform DFT on the shifted L1 group modulation symbols to obtain an L1 group modulation after DFT a symbol; respectively performing DFT on the shifted L2 group modulation symbols to obtain L2 group modulation symbols after DFT; and mapping the L1 group modulation symbols after the DFT to L1 in the first time slot respectively On the domain symbol, and the mapped L1 group modulation symbols occupy K RBs in the first time slot; and the LFT group modulation symbols after the DFT are respectively mapped to L2 time domains in the second time slot Symbolically, and the mapped L2 group modulation symbols occupy K RBs in the second slot; respectively performing inverse fast Fourier transform IFFT on the mapped L1 group modulation symbols to obtain an L1 group after IFFT Modulating symbols; respectively performing IFFT on the mapped L2 group modulation symbols to obtain an L2 group modulation symbol after IFFT; transmitting to the access network device by using the first time slot and the second time slot respectively The L1 group modulation symbol after the IFFT and the L2 group modulation symbol after the IFFT so that The access network apparatus transmitting the uplink control information.

With the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the generating unit is specifically configured to: encode the uplink control information, to obtain coded uplink control information; And modulating the encoded uplink control information to obtain the first group of modulation symbols and the second group of modulation symbols.

With the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is passed. Transmitting a second time-frequency resource, where the first time-frequency resource includes a larger number of RBs than The number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

With the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the user equipment is configured with a first downlink subframe set or a second downlink subframe set, The number of subframes included in the first downlink subframe set is greater than the number of subframes included in the second downlink subframe set, and the user equipment transmits the first downlink subframe set in the uplink subframe When the corresponding uplink control information is used, the number of RBs occupied by each time slot is greater than the uplink control information corresponding to the second downlink subframe set sent by the user equipment in the uplink subframe. The number of RBs occupied.

With reference to the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the user equipment is configured with a first downlink subframe set, where the first downlink subframe The set includes a first subset and a second subset, the first subset is a true subset of the second subset, and the user equipment transmits the downlink subgroup in the first subset in the uplink subframe When the uplink control information corresponding to the frame is used, the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframe of the second subset in the uplink subframe. The number of RBs occupied by time slots.

In conjunction with the third aspect, or any one of the foregoing implementation manners, in another implementation manner of the third aspect, the transmitting unit is further configured to: in the at least one time domain symbol of the uplink subframe The network access device transmits a demodulation reference signal DMRS, wherein the DMRS sequence in each time domain symbol includes a sequence in which the K segment is generated based on the length N.

In conjunction with the third aspect or any of the foregoing implementation manners, in another implementation manner of the third aspect, when the value of K is different, the maximum number of bits of uplink control information that can be transmitted by the user equipment is different.

A fourth aspect provides an access network device, including: a first acquiring unit, configured to acquire an L1 group modulation symbol from L1 time domain symbols in K resource blocks RB in a first time slot of an uplink subframe Wherein each set of modulation symbols includes K×N modulation symbols, K is the number of resource blocks RB for carrying uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is 1 a number of subcarriers included in the RB; a second acquiring unit, configured to acquire L2 group modulation symbols from L2 time domain symbols in the K RBs in the second slot of the uplink subframe, where each group The modulation symbol includes K×N modulation symbols; a first transform unit, configured to perform inverse discrete Fourier transform IDFT on the L1 group modulation symbols respectively to obtain an L1 group modulation symbol after IDFT; and a second change unit, configured to: Performing IDFT on the L2 group modulation symbols respectively to obtain an L2 group modulation symbol after IDFT; and a first inverse cyclic shift unit for respectively inverseting each group of modulation symbols in the L1 group modulation symbols after the IDFT Cyclic shift, obtaining the L1 group modulation symbol after the inverse cyclic shift, The cyclic shift value used in the inverse cyclic shift of the i-th modulation symbol in the L1 group modulation symbol after the IDFT

1 ≤ i ≤ L1; a second inverse cyclic shift unit, configured to perform inverse cyclic shift on each set of modulation symbols in the L2 group modulation symbols after the IDFT, respectively, to obtain L2 group modulation after inverse cyclic shift a symbol, wherein a cyclic shift value used by the j-th group modulation symbol in the L2 group modulation symbol after the IDFT is inversely cyclically shifted

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell; the first despreading unit is configured to despread the L1 group modulation symbols after the inverse cyclic shift by using a spreading code with a code length of L1, to obtain a first group. a modulation symbol, the first group of modulation symbols includes K×N modulation symbols, and a second despreading unit, configured to despread the L2 group modulation symbols after the inverse cyclic shift using a spreading code with a code length of L2, Obtaining a second group of modulation symbols, where the second group of modulation symbols includes K×N modulation symbols, and a third acquiring unit, configured to acquire, by using the first group of modulation symbols and the second group of modulation symbols The uplink control information is described.

With reference to the fourth aspect, in an implementation manner of the fourth aspect, the third acquiring unit is specifically configured to perform demodulation on the first group of modulation symbols and the second group of modulation symbols, respectively, to obtain a demodulated Encoded bitstream; decoding the encoded bitstream to obtain the uplink control information.

With the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is passed. And transmitting, by the first time-frequency resource, the number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource part overlapping.

With reference to the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the access network device configures, by the user equipment, a first downlink subframe set or a second downlink a subframe set, where the number of subframes included in the first downlink subframe set is greater than the number of subframes included in the second downlink subframe set, where the access network device receives the uplink subframe When the uplink control information corresponding to the first downlink subframe set is used, the number of RBs occupied by each time slot is greater than that of the access network device receiving the second downlink subframe set in the uplink subframe. The number of RBs occupied by each time slot when the uplink control information is received.

In combination with the fourth aspect or any of the above implementations, another implementation in the fourth aspect In the above, the access network device configures a first downlink subframe set for the user equipment, where the first downlink subframe set includes a first subset and a second subset, and the first sub The set is a true subset of the second subset, and when the access network device receives the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe, the time slot is occupied by each time slot. The number of RBs is smaller than the number of RBs occupied by each time slot when the access network device transmits the uplink control information corresponding to the downlink subframe in the second subset in the uplink subframe.

With reference to the fourth aspect, or any one of the foregoing implementation manners, in another implementation manner of the fourth aspect, the demodulation reference signal DMRS sequence in a time domain symbol of the uplink subframe includes a K segment based on a length N The generated sequence.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, when the L1+L2 group modulation symbols are subjected to each group of independent cyclic shifts, the cyclic shift value used is K times of the cell-specific basic cyclic shift value of the current cell, so that when When the time-frequency resources of the single RB and the multiple RBs are overlapped, the orthogonality between the PFs of each type can be ensured, and the mutual interference is reduced.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a scene diagram of carrier aggregation.

2 is a channel structure diagram of PF3.

FIG. 3 is a schematic diagram of overlapping PF3 time-frequency resources of a single RB and multiple RBs according to an embodiment of the present invention.

FIG. 4 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a manner of transmitting uplink control information.

FIG. 6 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention.

FIG. 7 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

FIG. 8 is a schematic block diagram of an access network device according to an embodiment of the present invention.

FIG. 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

FIG. 10 is a schematic block diagram of an access network device according to an embodiment of the present invention.

FIG. 11 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention.

Figure 12 is a diagram showing a plurality of spreading operations performed in one time slot.

FIG. 13 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention.

FIG. 14 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

FIG. 15 is a schematic block diagram of an access network device according to an embodiment of the present invention.

FIG. 16 is a schematic block diagram of a user equipment according to an embodiment of the present invention.

FIG. 17 is a schematic block diagram of an access network device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

For ease of understanding, an example of an application scenario of an embodiment of the present invention is first given. FIG. 1 is a diagram showing an example of an application scenario of an embodiment of the present invention. In the carrier aggregation system of FIG. 1 , both the user equipment 1 and the user equipment 2 are user equipments for performing CA, and the user equipment 1 communicates with the serving base station by using a carrier group f1 (a plurality of carriers form a carrier group), and the user equipment 2 passes The carrier group f1 and the carrier group f2 communicate with the serving base station.

The embodiment of the present invention can be regarded as an extension based on the existing PUCCH format 3 (PF3, PUCCH format 3). The channel structure and transmission mode of the PUCCH format 3 are briefly introduced below with reference to FIG. 2 . PUCCH format 3 occupies a time-frequency resource of one resource block (RB) in two slots of one subframe, and uses discrete Fourier transform to spread OFDM (Discrete Fourier Transform-Spread-OFDM) , DFT-S-OFDM) transmission method. The PUCCH format 3 occupies one RB time-frequency resource in each of the two slots of one subframe. For the convenience of description, the existing PF3 is referred to as a PF3 of a single RB. The channel structure of the PF3 of a single RB is as shown in FIG. 2.

Specifically, the original ACK/NACK bits (such as 20 bits) are subjected to channel coding and rate matching to obtain 48 coded bits, which are then scrambled and modulated into 24 Quadrature Phase Shift Keying (Quadrature Phase Shift Keying, QPSK) symbols are placed in two slots of one subframe, respectively. Thus, there are 12 QPSK symbols on each time slot, specifically placed in a time domain of the time slot. On 12 consecutive subcarriers on the symbol, that is, occupying 12 subcarriers on one time domain symbol in one RB. Then, for each time slot, Orthogonal Cover Code (OCC) spreading is performed in the time domain, and the OCC spreading code length is generally 5, and the spreading time occupies 5 time domain symbols in one RB, different The UE may perform code division multiplexing on different RBs through different OCC spreading code sequences, and the remaining two symbols are used to carry the reference signal RS. For special cases (such as in the case of the transmission of a Sounding Reference Signal (SRS) in the second time slot), the above-mentioned spreading code length may also be 4. After spreading, the cell-specific cyclic shift is performed on the frequency domain in the 12 modulation symbols on each time domain symbol, and the cyclic shift is a cyclic shift specific to each time domain symbol, that is, different time domains. The cyclic shifts on the symbols may be the same or different, but all UEs in the cell are identical for cyclic shifts on the same time domain symbol. Finally, DFT precoding and Inverse Fast Fourier Transform (IFFT) are performed, which are then transmitted to the base station.

In order to support ACK/NACK feedback of more bits (such as 40 bits or more), an intuitive way is to extend the capacity of the current PF3, such as occupying one RB in one slot and expanding to one slot to occupy multiple RBs. .

The embodiment of the present invention can be regarded as an extension of the existing PF3. The existing PF3 is referred to as a PF3 of a single RB. For distinguishing, the format of the PUCCH in the embodiment of the present invention may be referred to as multiple RBs. PF3, or PF3 of K RBs (K is a positive integer greater than 1), is used to indicate that the format of the PUCCH of the embodiment of the present invention occupies multiple RBs in each slot of the uplink subframe. It should be noted that the PF3 of the single RB, the PF3 of the multiple RBs (or K RBs), and the like are merely for convenience of description, and are distinguished from the prior art, and should not be construed as limiting the embodiments of the present invention. In fact, the format of the PUCCH that occupies multiple RBs in one slot in the embodiment of the present invention may also be named as other formats of the PUCCH, such as the format 4 of the PUCCH, or the PF3 together with the existing single RB PF3. The embodiment of the present invention does not specifically limit this.

Taking PF3 of 2 RBs as an example, it is only necessary to extend the 12 subcarriers occupied by the uplink subframe in each slot to 24 subcarriers, and it is not necessary to change the time domain OCC spreading, so that the ratio can be proportionally The RB3 of 2 RBs supports 40 bits of ACK/NACK feedback, which in turn can support CA of more carriers (such as 10 carriers). The scheme of PF3 extended to 3 RBs or more RBs is similar, and only needs to be extended in the frequency domain.

However, the PF3 of a single RB is extended to multiple RBs due to limited multiplexing capability. Since the multiplexing capability is the same as that of the PUCCH format 3 of a single RB, the overhead of the PF3 of multiple RBs is more Large, and occupied resources have multiplied with the expansion of RB.

In order to reduce the resource overhead of the PF3, the channel resources of the PF3 of the single RB and the PF3 of the multiple RBs may be overlapped in the frequency domain. Specifically, as shown in FIG. 3, RB0 and RB1 in slot 0 each carry a PF3 of a single RB, and are distinguished by using Frequency Division Multiple (FDM), and RB0 and RB1 are carried together. PF3 of two RBs, the PF3 of the two RBs and the PF3 of the single RB are distinguished by Code Division Multiple (CDM) technology (the first time domain symbol and the fifth time domain symbol in FIG. 3) Hosted in RS). That is, the PF3 of the single RB and the PF3 of the dual RB in each slot overlap on the two frequency domains RB, wherein the channels of the PF3 of different single RBs can adopt frequency division multiplexing of different RBs, single RB and The channels of the RBs of multiple RBs are code division multiplexed by the time domain OCC.

Although the manner in which the PF3 of the single RB and the PF3 of the multiple RB partially overlap in the frequency domain can reduce the PUCCH overhead and improve the multiplexing efficiency of the PUCCH, since there is a cyclic shift of each time domain symbol level in the PF3, the extension is extended to After PF3 of multiple RBs, cyclic shifting cannot be performed arbitrarily. This may cause single-RBs overlapping with time-frequency resources and PF3s of multiple RBs to be non-orthogonal to each other, causing mutual interference. For example, suppose that the value of the cyclic shift of the PF3 of the single RB on the five time-domain symbols is {a, b, c, d, e}, if the PF3 of the two RBs continues to use the PF3 of the single RB for each RB. The value of the cyclic shift, that is, the cyclic shift of {a, b, c, d, e} for each RB, causes the two to be non-orthogonal, because the number of RBs is different due to DFT operations of different lengths. There is mutual interference between PF3.

It can be seen that when the PF3 of the single RB and the PF3 of the multiple RB overlap when the time-frequency resources overlap, the selection of the cyclic shift value affects the orthogonality between them, thereby affecting the demodulation performance of each other, then how to The cyclic shift of PF3 of multiple RBs is designed such that orthogonality is guaranteed to be a problem to be solved by extending PF3 of a single RB to PF3 of multiple RBs.

FIG. 4 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention. The method of Figure 4 includes:

410. The user equipment generates a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, where the first group of modulation symbols and the second group of modulation symbols each include K×N modulation symbols, where K is in a time slot. The number of resource blocks RB used to carry the uplink control information, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB.

Taking N=12, that is, 1 RB includes 12 subcarriers as an example, in the existing single RB PF3, each group of modulation symbols includes 12 modulation symbols, and the two sets of modulation symbols include 24 modulation symbols in total. On the premise of N=12, a set of modulation symbols in the embodiment of the present invention includes at least 24 modulation symbols, or even more. The value of K may be determined according to the actual situation. For example, it may be determined according to the number of bits of the uplink control information that the user equipment is currently preparing to send, or may be determined according to the number of downlink subframes configured by the user equipment, or when the CA is performed according to the user equipment. The number of carriers is determined.

It should be noted that the uplink control information is uplink control information to be transmitted in an uplink subframe, or the uplink control information is uplink control information to be carried in an uplink subframe.

Since the uplink subframe includes two time slots, and the uplink control information is carried in the uplink subframe, it is jointly carried by the two time slots. Therefore, the modulation symbols carrying the uplink control information need to be grouped, and the present invention is implemented. The manner of grouping is not specifically limited, and reference may be made to the prior art. In other words, the first group of modulation symbols and the second group of modulation symbols respectively correspond to two time slots of the uplink subframe, that is, the first group of modulation symbols correspond to the first time slot of the uplink subframe, and the second group of modulation symbols correspond to the uplink subframe. The second time slot of the frame. The first set of modulation symbols corresponds to the first time slot, and specifically, the information of the first group of modulation symbols is finally carried by the first group of modulation symbols after subsequent operations such as spreading, cyclic shift, DFT, and IFFT. The first time slot; the second group of modulation symbols corresponding to the second time slot, specifically indicating that the second group of modulation symbols are subjected to subsequent operations such as spreading, cyclic shift, DFT, IFFT, etc., in the second group of modulation symbols The information will eventually be carried in the second time slot.

420. The user equipment uses a spreading code with a code length of L1 to spread the first group of modulation symbols to obtain an L1 group modulation symbol, and spreads the second group of modulation symbols by using a spreading code with a code length of L2. L2 group modulation symbol.

It should be noted that each group of modulation symbols in the L1 group modulation symbols obtained after spreading includes K×N modulation symbols, and each group of modulation symbols in the L2 group modulation symbols obtained after spreading includes K×N modulation symbols.

430. The user equipment cyclically shifts each group of modulation symbols in the L1 group modulation symbols to obtain the shifted L1 group modulation symbols, where the ith group modulation symbols in the L1 group modulation symbols are cyclically shifted. The cyclic shift value used is

1 ≤ i ≤ L1.

In other words, the user equipment performs each group of independent cyclic shifts on the L1 group modulation symbols to obtain the shifted L1 group modulation symbols.

440. The user equipment cyclically shifts each group of modulation symbols in the L2 group modulation symbols to obtain the shifted L2 group modulation symbols, where the jth group modulation symbols in the L2 group modulation symbols are cyclically shifted. The cyclic shift value used is

1≤j≤L2,

with

Both represent the cell-specific basic cyclic shift values of the current cell.

In other words, the user equipment performs each group of independent cyclic shifts on the L2 group modulation symbols to obtain the shifted L2 group modulation symbols.

It should be noted that the current cell is a cell in which the user equipment is located, and the cell-specific basic cyclic shift value of the current cell may refer to a cell-specific cyclic shift value used by the existing single-RB PF3. That is,

with

The PF3 corresponding to the single RB is corresponding to the cell-specific cyclic shift value of the PF3 of the single RB and the cell-specific cyclic shift value corresponding to the PF3 of the multi-RB. The cell-specific cyclic shift value is referred to as the cell-specific basic cyclic shift value of the current cell. It should be noted that the above naming is only for the purpose of distinguishing, and it is not necessary to limit the naming of the cyclic shift value. In fact,

with

It is the cell-specific cyclic shift value of the existing current cell.

It should be noted that the L1 group modulation symbols may respectively correspond to L1 time domain symbols in the first time slot, that is, the information carried in the i-th group modulation symbols of the L1 group modulation symbols herein may be The time domain symbols corresponding to the i group modulation symbols are carried, or are transmitted in the time domain symbols corresponding to the i th group modulation symbols. The cyclic shift value used by the ith group modulation symbol in the L1 group modulation symbol when performing cyclic shift may be a cyclic shift value on the time domain symbol corresponding to the ith group modulation symbol. Similarly, the L2 group modulation symbols may respectively correspond to L2 time domain symbols in the second time slot, that is, the information carried in the jth group modulation symbols of the L2 group modulation symbols herein may be from the jth group The time domain symbols corresponding to the modulation symbols are carried, or are transmitted in the time domain symbols corresponding to the jth group of modulation symbols. The cyclic shift value used by the jth group modulation symbol in the L2 group modulation symbol when performing cyclic shift may be a cyclic shift value on the time domain symbol corresponding to the jth group modulation symbol.

450. The user equipment transmits, by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, the L1 group modulation symbols carried after the shift and the shifted Uplink control information in the L2 group modulation symbols.

In other words, the user equipment sends the information carried in the shifted L1 group modulation symbols to the access network device through the K RBs in the first time slot of the uplink subframe; the user equipment passes the second time of the uplink subframe. The K RBs in the slot transmit information carried in the shifted L2 group modulation symbols to the access network device.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, the embodiment of the present invention uses each group of independent cyclic shifts of the L1+L2 group modulation symbols. The cyclic shift value is K times the cell-specific basic cyclic shift value of the current cell, so that when the time-frequency resources of the single RB and the multiple RBs are overlapped, orthogonality between the PFs of each type can be ensured, and the orthogonality is reduced. Interference between each other. In the following, when the cyclic shift is performed using K times of the basic cyclic shift value, the PF3 of different RB numbers in the current cell satisfies the mathematical proof of orthogonality when the time-frequency resources overlap.

It should be understood that, before the foregoing step 410, the UE may perform downlink data scheduling by the base station, and the uplink control information in step 110 may be feedback information (such as ACK/NACK, etc.) for downlink data scheduling. Specifically, the UE is configured by the base station to configure multiple carriers by using Radio Resource Control (RRC) signaling, and the multiple carriers may be FDD carriers or TDD carriers. Taking the 10 TDD carriers in which the UE is configured with the uplink and downlink configuration 2 as an example, according to the TDD uplink and downlink subframe configuration in Table 1 and Table 2 and the timing relationship between the downlink data and the uplink ACK/NACK, the uplink subframe 2 of the primary carrier It is required to feed back the ACK/NACK corresponding to the data channel in the downlink subframes 4, 5, 6, and 8 on the 10 carriers. These data channels are respectively scheduled by independent control channels, or may be scheduled by a unified control channel, or a combination of the two, such as multiple control channels, each time scheduling data channels in more than one downlink subframe. The embodiment of the present invention takes an independent control channel scheduling as an example. The downlink subframes mentioned herein include normal downlink subframes, and also include special subframes in the TDD system. The ACK/NACK is regarded as one of the Uplink Control Information (UCI) of the uplink control information, and the UCI may further include Channel State Information (CSI) and the like. The embodiment of the present invention takes UCI as an ACK/NACK as an example for description. After the UE is configured with multiple carriers, the base station may send a control channel to schedule downlink data channels in the downlink subframes on the configured carriers, and the UE needs to feed back uplink ACK/NACK corresponding to the downlink data channels.

After acquiring the carrier configuration and the downlink data scheduling of the base station on the configured carrier, based on the timing relationship specified in Table 2, the UE determines the original ACK/NACK information bits that need to be fed back in the uplink subframe (such as the foregoing uplink subframe 2). These original ACK/NACK information bits may be a bit stream of 1 or 0, where "1" may represent an ACK that the downlink data channel is correctly received, and "0" may represent a NACK that the downlink data channel is not correctly received. The number of original ACK/NACK bits herein may generally be determined by the configured set of carriers, such as based on downlink subframes 4, 5, 6, and 8 on each of the above 10 configured carriers, then uplink subframe 2 The number of original ACK/NACK bits determined above may be 4*10=40. If each subframe is scheduled with two codewords, the number of ACK/NACK bits may be 4*10*2=80. It is assumed here that each sub-frame is a single codeword scheduling. After determining the original ACK/NACK information bit number, the UE arranges the original ACK/NACK bits in a certain order. Generally, the UE sorts the ACK/NACK corresponding to the multiple downlink subframes of one carrier according to the carrier label, and then sorts the ACK/NACK corresponding to the multiple downlink subframes of the next carrier. If there is no scheduled downlink subframe or the location of the ACK/NACK corresponding to the downlink subframe in which the UE does not receive the downlink data scheduling, the UE will fill in “0”, that is, fill the NACK. For example, the UE will arrange 4 ACK/NACKs of the downlink subframes 4, 5, 6, and 8 of the carrier 1, for example, the corresponding ACK/NACK is {ACK, NACK, ACK, padding NACK} or {1, 0, 1, padded 0}, the first three bits are the ACK/NACK feedback for the received downlink data, and the last bit is the downlink data scheduling of the subframe 8 that the UE does not receive on carrier 1, so padded with 0 or NACK; Next, the UE then aligns the ACK/NACK corresponding to the corresponding positions of the downlink subframes 4, 5, 6, and 8 on the carrier 2 to the last carrier 10. Of course, other arrangement methods are not excluded, as long as they are arranged according to preset rules that are clear to both the UE and the base station.

Optionally, in an embodiment, the step 410 may include: the user equipment encodes the uplink control information to obtain the encoded uplink control information; and the user equipment modulates the encoded uplink control information to obtain the first group of modulation symbols and The second set of modulation symbols.

Specifically, the uplink control information is still an example of the original ACK/NACK, and the UE determines the number of original ACK/NACK information bits, and after the ACK/NACK is sorted into bits, the original ACK/NACK information bits are channelized. coding. The embodiment of the present invention does not specifically limit the type of channel coding, and may be a linear block coding, a convolutional code or a Turbo code. If you use linear block coding, such as Reed Muller (RM) code, you do not need to add Cyclic Redundancy Check (CRC) before encoding; if you use convolutional code or Turbo, you can encode The CRC is added before, and may not be added. The embodiment of the present invention does not specifically limit this. The encoded ACK/NACK may be referred to as an encoded ACK/NACK bitstream.

Optionally, after channel coding, the UE performs rate matching on the obtained encoded ACK/NACK bitstream to obtain a rate matched encoded ACK/NACK bitstream. For example, the PF3 of the single RB mentioned above can carry 48 coded ACK/NACK bits in two slots of one subframe, of course, if it is extended to PF3 of K RBs (K is a positive integer greater than 1) It can carry K*48 encoded ACK/NACK bits. Taking RM encoding as an example, an RM encoder assumes that the maximum number of bits before encoding that can be input is 11, and outputs up to 32 encoded bits. Then, if the number of bits before encoding is less than or equal to 11, a single RM encoding can be used, in which case the encoder outputs 32 bits, so the 32 bits need to be extended to 48 bits to enable The PF3 of a single RB is transmitted. It is common practice to extend the 32-bit cyclic repetition to obtain the above 48 bits. If the number of bits before encoding is greater than 11 but less than 22, dual RM encoding can be used, in which case the encoder outputs 2*32=64 bits, so the 64 bits need to be compressed to 48 bits so that a single RB is used. The PF3 is transmitted. The general practice is to remove 16 bits of the 64 bits to obtain the above 48 bits. For the 40 original ACK/NACK bits of this embodiment, 4 RM encoders are required, and the output is 32*4=128, and the PF3 of the dual RB is required, that is, the 128 bits are compressed to 48*2=96. Bits, specifically, can also remove 32 bits out of 128 bits. Of course, convolutional codes or Turbo codes can also be used, and the manner of bit expansion and compression is similar. This process of adapting the number of bits output by the encoder to the number of bits required by PF3 can be referred to as rate matching.

After channel coding and/or rate matching, the UE performs constellation modulation on the encoded ACK/NACK bitstream. Considering that the performance requirements of ACK/NACK are higher than the data, relatively robust QPSK modulation is generally adopted, that is, one QPSK modulation symbol is generated every two encoded bits. Of course, other modulation methods are not excluded, such as 16 Quadrature Amplitude Modulation (QAM) or even 64QAM, which can be applied in a scenario where the channel condition of the UE is good and the signal to noise ratio is relatively high.

In the above embodiment, 40 original ACK/NACK bits need to be transmitted using PF3 of dual RB, then the number of bits after encoding and/or rate matching is 96, and after QPSK modulation, 48 QPSK symbols are obtained. The 48 QPSK modulation symbols are divided into two groups and respectively transmitted in two time slots of one subframe, which are specifically divided into 24 modulation symbols of the first group and 24 modulation symbols of the second group. Assuming that 12 subcarriers are included in one RB frequency domain, then for PF3 of dual RBs, K=2 and N=12. Of course, other values are not excluded, for example, one RB frequency domain includes 4 subcarriers, and other values K PF3 are used.

The spreading in step 420 may be to spread the two sets of modulation symbols obtained by constellation modulation. Specifically, after the constellation modulation obtains the K*N modulation symbols of the first group and the K*N modulation symbols of the second group, the UE performs a spreading operation on each of the modulation symbols of each group of K*N modulation symbols. . Specifically, each of the first group of K*N modulation symbols is spread using a first orthogonal code of the first code length L1, generally L1=5; similar spreading is performed for the second group. Using a second orthogonal code of the second code length L2, L2 may be 5 or 4. The first and second orthogonal code sequences are shown in Table 3. Of course, other types of orthogonal codes may also be used. The present invention does not limit the specific orthogonal code sequence. After spreading, the L1 group spread spectrum modulation symbols and the L2 group spread spectrum modulation symbols are obtained.

Table 3. Orthogonal code sequences of different code lengths

Step 430 and step 440 are cyclic shifting of the spread modulated symbols. Specifically, after the spreading operation obtains the L1 group of the spread modulated symbol and the L2 group of the spread modulated symbol, the UE performs each group of independent cyclic shift operations on each of the L1 group of the spread modulated symbols. For the L2 group spread spectrum modulation symbols are similar to each set of independent cyclic shift operations. The value of the cyclic shift performed on each of the L1 group spread spectrum modulation symbols may be

The value of the cyclic shift performed on each of the L2 group spread spectrum modulation symbols may be

among them

Are all integers, and

The value of the basic cyclic shift of the current cell. The value of the basic cyclic shift

The value of the cyclic shift used when transmitting the PF3 of the single RB in the current cell. The value of the basic cyclic shift of the current cell

It is determined by at least one of a frame number, a subframe number, a time slot number, and a time domain symbol number. Specifically, the basic cyclic shift can be formulated by a formula

Generated, where n _s is a slot label, and l is a label of a time domain symbol in the slot,

The total number of time domain symbols in the time slot; c(i) is a pseudo random sequence generation function whose initial value is determined by the cell identity of the current cell, ie, the basic cyclic shift is current cell specific, that is, The UE within the current cell will use the cell-specific cyclic shift. It can be seen that the value of the specific cyclic shift of the cell is determined by the slot label and the time domain symbol label, and can also be determined according to other parameters, such as a frame label, a subframe label, etc., which is not limited in this embodiment of the present invention. .

From the determination of the cyclic shift value of the PF3 of the above K RBs, it is necessary to ensure that the value of the cell-specific cyclic shift performed by the PF3 of the K RBs is a value of K times the basic cyclic shift, which can make different K The value of PF3 maintains the orthogonal codes between each other when the time-frequency resources overlap and adopt different orthogonal code sequences, that is, the demodulation performance of each other is ensured, thereby improving the resources. Reuse capability and save resource overhead of PUCCH in the cell.

Optionally, the step 450 may include: the user equipment separately performs DFT on the shifted L1 group modulation symbols to obtain the L1 group modulation symbols after the DFT; and the user equipment performs DFT on the shifted L2 group modulation symbols respectively. The L2 group modulation symbol after the DFT; the user equipment maps the L1 group modulation symbols after the DFT to the L1 time domain symbols in the first time slot, and the mapped L1 group modulation symbols occupy the K in the first time slot. RB; the user equipment maps the L2 group modulation symbols after the DFT to the L2 time domain symbols in the second time slot, and the mapped L2 group modulation symbols occupy K RBs in the second time slot; the user equipment Performing IFFT on the mapped L1 group modulation symbols respectively, and obtaining the L1 group modulation symbols after the IFFT; the user equipment respectively performs IFFT on the mapped L2 group modulation symbols to obtain the L2 group modulation symbols after the IFFT; the user equipment passes the first The time slot and the second time slot transmit the L1 group modulation symbols after the IFFT and the L2 group modulation symbols after the IFFT to the access network device to transmit the uplink control information to the access network device.

Specifically, after the cyclic shift, the UE performs a DFT operation on each of the L1 group cyclically shifted modulation symbols, and performs a DFT operation on each of the L2 group cyclically shifted modulation symbols. After DFT, it is equivalent to transforming the signal into the frequency domain. Then, the modulation symbols after the L1 group DFT can be mapped to the L1 time domain symbols in the K RBs in the first time slot, and the L2 group is The modulation symbols after the DFT are mapped onto the L2 time domain symbols of the K RBs in the second slot. The specific mapping structure is as shown in the channel structure of PF3 in FIG. Then, the IFFT operation is performed on each of the mapped L1 group modulation symbols and the L2 group modulation symbols, and finally the UE transmits the UWI modulation symbols after the IFFT operation to the base station in the uplink subframe.

Optionally, as an embodiment, the uplink control information is transmitted by using the first time-frequency resource, and the other uplink control information of the current cell is transmitted by using the second time-frequency resource, where the number of RBs included in the first time-frequency resource is greater than the second time. The number of RBs included in the frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource. The overlapping different time-frequency resources can be code-orthogonal using different orthogonal code sequences.

In other words, the first time-frequency resource is referred to as a time-frequency resource of PF3 of K RBs, a time-frequency resource in which PF3 of K RBs is located, and K-1, K-2 transmitted in the current cell. The time-frequency resources of the PF3 where at least one of 2, 1 RBs may overlap. As shown in FIG. 3, the different PF3s that are overlapped may be code-orthogonal using different orthogonal code sequences.

It should be noted that the other uplink control information in the current cell may be uplink control information sent by another user equipment in the current cell, such as the second user equipment, to the access network device.

In the embodiment of the present invention, the PF3 format is extended to the PF3 format of multiple RBs, and the time-frequency resources used between the PF3 formats of different RBs in the current cell are allowed to overlap, thereby further improving the usage rate of the PUCCH. In addition, since the cyclic shift value used in each group of independent cyclic shifts of the L1+L2 group modulation symbols is K times of the cell-specific basic cyclic shift value of the current cell, the embodiment of the present invention When the time-frequency resources of the RB and the multiple RBs are overlapped, the orthogonality between the PFs of each type can be ensured, and the mutual interference is reduced.

Optionally, as an embodiment, the user equipment is configured with the first downlink subframe set or the second downlink subframe set, where the number of subframes included in the first downlink subframe set is greater than the second downlink subframe set. The number of subframes included, when the user equipment transmits the uplink control information corresponding to the first downlink subframe set in the uplink subframe, the number of RBs occupied by each slot is greater than that of the user equipment in the uplink subframe. The number of RBs occupied by each time slot when the uplink control information corresponding to the second downlink subframe set is used.

It should be noted that different numbers of carriers configured by the UE may cause different sets of downlink subframes configured by the UE, and the two are associated.

Specifically, PF3 of K1 RBs and PF3 of K2 RBs respectively correspond to UCI transmission when the UE is configured with the first downlink subframe set and the second downlink subframe set, where K1 is a natural number greater than 1. K2 is a natural number greater than 0, and K1 is greater than K2, and the number of downlink subframes included in the first downlink subframe set is greater than the number of downlink subframes included in the second downlink subframe set. For example, if the UE is configured with 10 carriers of carriers 1 to 10, and each carrier uses TDD uplink and downlink configuration 2, it is necessary to use PF3 of dual RB with K=2 to carry ACK/NACK; if the UE is configured with carrier For 5 carriers of 1 to 5, and each carrier uses TDD uplink and downlink configuration 2, as described in the above embodiment, PF/NACK can be carried by using PF3 of a single RB with K=1.

In the embodiment of the present invention, the K value used by the PF3 of the UE is determined according to the number of downlink subframes and/or the number of carriers configured by the UE by the access network device, so that the transmission of the PUCCH is more flexible.

Optionally, as an embodiment, the user equipment is configured with the first downlink subframe set, where the first downlink subframe set includes the first subset and the second subset, and the first subset is the second subset. When the user equipment transmits the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe, the number of RBs occupied by each slot is smaller than that of the user equipment in the uplink subframe. The number of RBs occupied by each time slot when the uplink control information corresponding to the downlink subframe in the subset is used.

Specifically, the first downlink subframe set configured by the foregoing uplink subframe includes a first subset and a second subset, where the first downlink subframe set is a downlink subframe set configured by the UE, and the first subframe The set may include at least two downlink subframes, which may be a true subset of the second subset. The UE is indeed The UC3 using the K RBs is used to transmit the UCI modulation symbols corresponding to the downlink subframes in the first subset; or the UE determines to use the PF3 of the K2 RBs to transmit the UCI modulation symbols corresponding to the downlink subframes in the second subset. For example, if the UE is configured with 15 carriers of carriers 1 to 15, and each carrier uses TDD uplink and downlink configuration 2, but in a certain subframe, the UE does not necessarily have to be scheduled for the 15 carriers, considering the service burst. For example, some subframes may schedule the 15 carriers, but some subframes may only schedule 5 or fewer carriers. Therefore, the format fallback mechanism of PF3 can be considered. According to the timing relationship of the downlink data to the uplink ACK/NACK, the first downlink subframe set associated with the uplink subframe 2 includes downlink subframes 4, 5, 6, and 8 of each carrier of carriers 1 to 15, for a total of 60 a downlink subframe; introducing a first subset of the first downlink subframe set, for example, the first subset includes downlink subframes 4, 5, 6, and 8 of each carrier of carriers 1 to 5, for a total of 20 downlinks Subframe. A second subset is introduced, the second subset comprising downlink subframes 4, 5, 6, and 8 of each carrier of carriers 1 through 10, for a total of 40 downlink subframes. If the base station only schedules the downlink subframes in the first subset for the UE, the UE may use the PF3 of the single RB to transmit the ACK/NACK; if the base station schedules the downlink subframes of the carriers 1 to 10, but does not schedule the carrier 11 To the downlink subframe of 15, the UE can use the PF3 of the dual RB to transmit the ACK/NACK. The second subset may also be a third downlink subframe set, such that if the base station schedules the downlink subframes of the carriers 1 to 15 for the UE, the UE may use the PF3 of the three RBs to transmit the ACK/NACK. The channel resources of the PF3s of the single, the dual, and the three RBs are determined, and the indications displayed by the base station may be used for the UE, or the UE may be implicitly determined according to the downlink data scheduling received by the UE, which is not specifically limited in this embodiment of the present invention.

Optionally, as an embodiment, the method of FIG. 4 may further include: the user equipment sends a Demodulation Reference Signal (DMRS) to the access network device in the at least one time domain symbol of the uplink subframe, where The DMRS sequence in each time domain symbol includes a sequence of K segments generated based on length N.

Specifically, the UE may include, in the first time slot of the uplink subframe, a time domain symbol other than the L1 time domain symbols, and a time domain symbol other than the L2 time domain symbols in the second time slot. Send DMRS in. The DMRS can be used for channel estimation of the PF3, and then the obtained channel estimation result is used to demodulate the modulation symbols of the PF3. Specifically, as shown in FIG. 2, the RS in FIG. 2 may be a DMRS, and the modulation symbols of the DMRS and the UCI occupy different time domain symbols in each time slot. Generally, one time slot has 7 symbols. The sequence numbers are 0, 1, ..., 6, respectively, so that the DMRS can occupy the time domain symbols 1 and 5 of each time slot, and of course, other time and number or time series symbols can be occupied, which is in the embodiment of the present invention. This is not limited.

Furthermore, for a DMRS on a time domain symbol, the sequence length is K*N, and the sequence can be generated in accordance with the length N. Then, based on the sequence of length N, one way is to repeat K times to form a K*N long DMRS sequence; or, another method, to make K sequences of each of the above N lengths different cyclic shifts from each other The bits are then joined together to form a K*N long DMRS sequence; or other N-length based sequences are extended to K*N long DMRS sequences. In this way, it can be ensured that the DMRSs of PF3 with different K values are orthogonal. Alternatively, the DMRS sequence may also be directly generated by a K*N long sequence, but the DMRSs of different K values are not easily orthogonalized, resulting in the UCI being achieved even if the cyclic shift of the UPI modulation symbol using K times is achieved. PF3 with different K values is orthogonal, but DMRS is not orthogonal, which may result in inaccurate channel estimation results after channel estimation, which in turn leads to a decrease in UCI demodulation performance. However, if the magnitude of the decrease is not large, the time-domain peak-to-average ratio of the DMRS obtained by directly generating the DMRS based on the length of the K*N is larger than the above-mentioned independent N length to generate a sequence and then spliced into a K*N long DMRS. The peak-to-average ratio is lower, so it is also possible to directly generate a K*N DMRS sequence. Alternatively, a 2*N long sequence may be generated based on 2*N units, and a K*N long DMRS sequence may be generated by repeating or cyclically shifting and then splicing. If a K*N long DMRS sequence is directly generated, it can be generated directly using the Zad-off Chu sequence. Table 4 shows the sequences generated based on the N (N=12) long sequence.

Table 4. Sequences generated based on length N=12

Optionally, as an embodiment, when the value of K is different, the maximum number of bits of uplink control information that can be transmitted by the user equipment is different.

Specifically, the number of original UCI bits that can be most carried on the channel resources of PF3 with different K values may be different. For example, a single RB PF3 can carry up to 22 original ACK/NACK bits, and a dual RB PF3 can carry 44 original ACK/NACK bits. Of course, the specific values of 22 or 44 are determined by the selection of the encoder, and the above-mentioned values determined by different encoders may be different, which is not specifically limited in the embodiment of the present invention.

Optionally, as an embodiment, the time-frequency resources of the K RBs of each slot of the uplink subframe that are mapped, and the first orthogonal code sequence and the second orthogonal code sequence may form a PF3 of the K RBs. Channel resources. Specifically, the channel resource may be configured by the RRC signaling to the UE, or configured by the RRC signaling to the UE by using one channel resource pool. For example, the pool includes four different channel resources, and then the control channel of the data channel is scheduled. The 2 bits in the port specifically indicate one of the 4 channel resources as the PF3 channel resource used for currently transmitting the ACK/NACK.

Optionally, if the SRS is not configured in the uplink subframe, L1 and L2 in step 430 and step 440 may be the same, for example, all equal to 5; or, if the SRS is configured in the uplink subframe, The L1 may be greater than L2, such as L1 equals 5 and L2 equals 4. Of course, other values are not excluded.

Optionally, the first orthogonal code sequence and the second orthogonal code sequence are different, and a pre-configured association rule may exist between the first orthogonal code sequence and the second orthogonal code sequence. In order to implement randomization processing between the first time slot and the second time slot to smooth the interference, the first time slot and the second time slot may be configured to adopt different orthogonal code sequences, which may be determined by predefined mapping rules. Of course, it may also be a rule that the base station notifies the UE by signaling. For example, one way is {1, 2}{2,3}{3,4}{4,5}{5,1}, which are five predefined mapping rules. The first value in each parenthesis is The orthogonal code sequence used in the first time slot, and the second value is the orthogonal code sequence used in the second time slot. Of course, other mapping rules are not excluded.

Optionally, the K RBs mapped in the first time slot of the uplink subframe and the K RBs mapped in the second time slot of the uplink subframe do not completely overlap in the frequency domain. The PUCCH can use frequency domain hopping between slots in two slots of one subframe to obtain diversity gain and improve PUCCH demodulation performance. For example, the PF3 of the K RBs occupied in the first time slot may be the first K RBs of the first time slot, and the K RBs occupied in the second time slot may be the last K RBs of the second time slot.

Other embodiments of the method for transmitting uplink control information according to an embodiment of the present invention are given below:

Optionally, as an embodiment, the method may include: the UE encodes the original UCI that needs to be sent in the uplink subframe to obtain the encoded UCI; and the UE modulates the encoded UCI to obtain the first group of modulation. a symbol and a second set of modulation symbols, each of the first set of modulation symbols and the second set of modulation symbols comprising K*N modulation symbols, where K is a natural number greater than 1, and N is a number of subcarriers included in one RB; Transmitting, by the UE, each of the first group of modulation symbols by using a first orthogonal code sequence having a first code length L1, to obtain an L1 group of spread modulated modulation symbols; Each of the second set of modulation symbols is used The second orthogonal code sequence of the second code length L2 is spread to obtain L2 group spread spectrum modulation symbols; the UE performs each group independent of each of the L1 group spread spectrum modulation symbols. a cyclic shift operation to obtain a modulation symbol after cyclic shift of the L1 group; the UE performs each group of independent cyclic shift operations on each of the L2 group of spread modulated symbols to obtain a L2 group cyclic shift a modulation symbol after the bit; wherein, the value of the cyclic shift performed on each of the L1 group of the spread modulated symbols is, in turn, each of the L2 group spread modulated symbols The values of the cyclic shifts performed are, in order, integers, and are the values of the basic cyclic shift of the current cell; the UE performs discrete Fu on each of the modulation symbols after the cyclic shift of the L1 group. Performing a Fourier Transform (DFT) operation to obtain a modulation symbol after the L1 group DFT; the UE performing a DFT operation on each of the L2 groups of cyclically shifted modulation symbols to obtain a modulation symbol after the L2 group DFT; Transmitting, by the UE, the modulation symbols after the L1 group DFT into K RBs in the first time slot On the L1 time domain symbols, the UE maps the L2 group DFT modulated symbols to L2 time domain symbols in the K slots in the second slot; the UE pairs the mapped L1 Each of the group modulation symbols and the L2 group modulation symbols performs an IFFT operation, and the UE transmits the UCI modulation symbols after the IFFT operation in the uplink subframe.

Optionally, as an embodiment, the value of the basic cyclic shift is a value of a cyclic shift used when transmitting a PUCCH format 3 of 1 RB in the current cell.

Optionally, as an embodiment, the value of the basic cyclic shift of the current cell is determined by at least one of a frame label, a subframe label, a slot label, and a time domain symbol label.

Optionally, as an embodiment, the time-frequency resources of the K RBs mapped, and the first orthogonal code sequence and the second orthogonal code sequence form an uplink control channel of the K RBs of the PUCCH format 3 a channel resource; the UE transmitting the UCI modulation symbol after the IFFT operation, comprising: the UE transmitting the UCI modulation symbol after the IFFT operation on the channel resource.

Optionally, as an embodiment, the time-frequency resource in which the PUCCH format 3 of the K RBs is located, and the K-1, K-2, . . . , 2, 1 RBs sent in the current cell. The time-frequency resources in which at least one PUCCH format 3 is located may overlap.

Optionally, as an embodiment, the number of original UCI bits that can be most carried on the channel resources of the PUCCH format 3 with different K values is different.

Optionally, as an embodiment, the PUCCH format 3 of the K1 RBs and the PUCCH format 3 of the K2 RBs respectively correspond to the case where the UE is configured with the first downlink subframe set and the second downlink subframe set. UCI is sent, where K1 is a natural number greater than 1, and K2 is greater than 0. The natural number, K1 is greater than K2, and the number of downlink subframes included in the first downlink subframe set is greater than the number of downlink subframes included in the second downlink subframe set.

Optionally, as an embodiment, the third downlink subframe set associated with the uplink subframe includes a first subset and a second subset, where the third downlink subframe set is a downlink configured by the UE. a frame set, the first subset includes at least two downlink subframes, the first subset is a true subset of the second subset; and the UE determines to transmit the first number using a PUCCH format 3 of K3 RBs The UCI modulation symbol corresponding to the downlink subframe in a subset; or the UE determines to transmit the UCI modulation symbol corresponding to the downlink subframe in the second subset by using the PUCCH format 3 of the K4 RBs.

Optionally, as an embodiment, if the SRS is not configured in the uplink subframe, the L1 and L2 are the same; or if the SRS is configured in the uplink subframe, the L1 is greater than L2. .

Optionally, as an embodiment, the first orthogonal code sequence and the second orthogonal code sequence are different, and a pre-configured association rule exists between the first orthogonal code sequence and the second orthogonal code sequence. .

Optionally, as an embodiment, the K RBs mapped in the first time slot and the K RBs mapped in the second time slot do not completely overlap in the frequency domain.

Optionally, as an embodiment, the foregoing method may further include: the UE is in a time domain symbol other than the L1 time domain symbols in the first time slot, and in the second time slot. The DMRS is transmitted in a time domain symbol other than the L2 time domain symbols.

Optionally, as an embodiment, the DMRS in each time domain symbol in each of the K RBs is an independently generated sequence of length N, and each of the K RBs is in the RB. The total length of the DMRS in each time domain symbol is K*N.

Embodiments of the present invention are described in more detail below with reference to specific examples. It should be noted that the example of FIG. 5 is only intended to assist those skilled in the art to understand the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to the specific numerical values or specific examples illustrated. A person skilled in the art will be able to make various modifications or changes in the embodiments according to the example of FIG. 5, and such modifications or variations are also within the scope of the embodiments of the present invention.

In FIG. 5, it is assumed that N=4, K=2, L1=L2=4, and only the signal generation mode of PF3 in one slot is selected, and the PF3 signal generation manner of the other slot is similar. It is assumed that UE1 uses the PF3 of the single RB in FIG. 5, and UE2 uses the PF3 of the dual RB in FIG. 5, the specific process is: UE1 is subjected to channel coding, and the original modulation symbols obtained after rate matching are {a1, a2, A3, a4}, then the spread code of the orthogonal code {1,1,1,1}, and then the cycle of each time domain symbol Ring shift {0, 1, 2, 3}; UE2 is channel coded, and the original modulation symbols obtained after rate matching are {b1, b2, b3, b4, b5, b6, b7, b8}, and then pass through orthogonal codes. The spreading of {1,-1,1,-1} is followed by a cyclic shift of {0, 2, 4, 6} per time domain symbol. Thereafter, UE1 and UE2 perform DFTs of lengths 4 and 8, respectively. Then, IFFT is performed and sent. The base station receives the UCI of UE1 and UE2 according to the inverse process described above.

The following is a proof that the PF3 of the K RBs are cyclically shifted using K times the cell-specific basic cyclic shift value, and the PF3s of different K values are still orthogonal to each other when the time-frequency resources overlap.

First assume that L1=L2=2, and the time domain orthogonal codes used by UE1 and UE2 are oc ₁ =[1,1] and oc ₂ =[1,-1] respectively; UE1 and UE2 use cyclic shift values respectively. for

with

UE1 and UE2 are respectively coded, and the time domain modulation symbols obtained after rate matching are respectively:

x ₁ (m), m=0,1,...,N-1

x ₂ (n), n=0,1,...,K*N-1

The time-domain modulation symbols obtained by spreading after being spread-spectrum respectively are:

After cyclic shifting, the time domain modulation symbols obtained are:

Then, after DFT operation, transform to the frequency domain, and the obtained frequency domain modulation symbols are:

The process of performing FFT through the IFFT and the receiving end is omitted because it is a direct inverse process. Here, the frequency domain modulation symbols after the FFT of the receiving end are provided as follows, that is, the signal portions of the two UEs are superimposed. Specifically, in the frequency domain, the first N modulation symbols of UE1 overlap with the first N modulation symbols of UE2, and UE1 has no signal from N+1 to K*N-1, because UE1 sends a single RB. PF3; and the frequency domain signal length of UE2 is K*N, because UE2 transmits PF3 of K RBs.

Next, UE1 performs an IDFT operation. Since the K factor in the above formula is eliminated, the cyclic shift performed by the first N modulation symbols of UE2 after IDFT is the same as that of UE1. Therefore, the time domain modulation symbols after the IDFT obtained by UE1 are:

UE1 performs reverse cyclic shift again:

UE1 performs despreading operations and combines to recover its original time domain modulation symbols without being interfered by the UE2 signal.

Next, the UE2 performs an IDFT operation, and it can be seen that when the UE2 performs IDFT, it is superimposed with the K-time oversampled signal of the UE1, but it can be seen that there is a K- between the original time domain modulation symbols of each two UE1s. 1 oversampling symbol

It is exactly equivalent to K times cyclic shift.

UE2 performs reverse cyclic shift again. It can be seen that the two columns of modulation symbols of UE1 are the same.

UE2 performs despreading operations and combines to recover its original time domain modulation symbols without interference from the UE1 signal, because the two columns of modulation symbols of UE1 are the same, so multiplied by the despread orthogonal code {1, -1} can eliminate the effect of UE1.

With reference to FIG. 1 to FIG. 5, a method for transmitting uplink control information according to an embodiment of the present invention is described in detail from the perspective of a user equipment, and a method according to an embodiment of the present invention will be described from the perspective of an access network device. A method of transmitting uplink control information. It should be understood that the interaction between the user equipment and the access network device described in the access network device side and related features, functions, and the like correspond to the description on the user equipment side. For the sake of brevity, duplicate descriptions are omitted as appropriate.

FIG. 6 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention. The method of Figure 6 includes:

610. The access network device acquires L1 group modulation symbols from L1 time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols, K For the number of resource blocks RB used to carry the uplink control information of the user equipment in one time slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB;

620. The access network device acquires L2 group modulation symbols from L2 time domain symbols in the K RBs in the second time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols.

630. The access network device performs an inverse discrete Fourier transform IDFT on the L1 group modulation symbols to obtain an L1 group modulation symbol after the IDFT.

640. The access network device performs IDFT on the L2 group modulation symbols respectively, and obtains the L2 group modulation symbols after the IDFT.

650. The access network device performs inverse cyclic shift on each group of modulation symbols in the L1 group modulation symbols after the IDFT, to obtain an L1 group modulation symbol after the inverse cyclic shift, where the L1 group modulation symbols in the IDFT are The cyclic shift value used by the i-th modulation symbol in the inverse cyclic shift

1≤i≤L1;

660. The access network device performs inverse cyclic shift on each group of modulation symbols in the L2 group modulation symbols after the IDFT, to obtain an L2 group modulation symbol after the inverse cyclic shift, where the L2 group modulation symbols after the IDFT The cyclic shift value used by the j-th modulation symbol in the inverse cyclic shift

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell;

670. The access network device despreads the inverse cyclically shifted L1 group modulation symbols by using a spreading code with a code length of L1 to obtain a first group of modulation symbols, where the first group of modulation symbols includes K×N modulation symbols.

680. The access network device uses the L2 group modulation after the inverse cyclic shift using the spreading code with the code length L2 The symbol is despread to obtain a second set of modulation symbols, and the second set of modulation symbols includes K×N modulation symbols;

690. The access network device acquires uplink control information that is carried in the first group of modulation symbols and the second group of modulation symbols.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, the cyclic shift value used when performing each set of independent inverse cyclic shift on the L1+L2 group modulation symbols after the IDFT is K times the cell-specific basic cyclic shift value of the current cell. In this way, when time-frequency resources of a single RB and multiple RBs are used in an overlapping manner, orthogonality between the PFs of each type can be ensured, and interference between each other can be reduced.

Optionally, as an embodiment, step 610 may include: the access network device performs an FFT operation on the received signal in the uplink subframe to obtain an L1 time domain of the K RBs in the first time slot of the uplink subframe. An L1 group modulation symbol on the symbol, and an L2 group modulation symbol on L2 time domain symbols among the K RBs in the second slot of the uplink subframe.

Optionally, as an embodiment, the access network device acquires uplink control information of the user equipment that is carried in the first group of modulation symbols and the second group of modulation symbols, and includes: the access network device separately processes the first group of modulation symbols and The second group of modulation symbols are demodulated to obtain a demodulated coded bit stream; the access network device decodes the coded bit stream to obtain uplink control information.

Optionally, as an embodiment, the uplink control information is transmitted by using the first time-frequency resource, and the other uplink control information of the current cell is transmitted by using the second time-frequency resource, where the number of RBs included in the first time-frequency resource is greater than the second time. The number of RBs included in the frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

Optionally, as an embodiment, the access network device configures the first downlink subframe set or the second downlink subframe set for the user equipment, where the number of subframes included in the first downlink subframe set is greater than the second downlink. The number of subframes included in the subframe set. When the access network device receives the uplink control information corresponding to the first downlink subframe set in the uplink subframe, the number of RBs occupied by each slot is greater than that of the access network device. The number of RBs occupied by each time slot when receiving the uplink control information corresponding to the second downlink subframe set in the uplink subframe.

Optionally, as an embodiment, the access network device configures, by the user equipment, a first downlink subframe set, where the first downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset, the access network device receiving, in the uplink subframe, a downlink subframe corresponding to the first subset When the uplink control information is used, the number of RBs occupied by each time slot is smaller than the number of RBs occupied by the time slot when the access network device transmits the uplink control information corresponding to the downlink subframe in the second subset. .

Optionally, as an embodiment, the DMRS sequence in one time domain symbol of the uplink subframe includes a sequence in which the K segment is generated based on the length N.

Another method for transmitting uplink control information according to an embodiment of the present invention is provided. The method includes: performing, by an access network device, an FFT operation on a signal received in an uplink subframe to obtain a first time slot in the uplink subframe. FFT-after L1 group modulation symbols on L1 time-domain symbols in the K RBs in the middle, and FFT on L2 time-domain symbols in the K RBs in the second slot in the uplink subframe L2 group modulation symbol;

The access network device performs an IDFT operation on each of the FFT L1 group modulation symbols on the L1 time domain symbols to obtain a modulation symbol after the L1 group IDFT; the access network device pairs the Each group of the L2 group modulation symbols after the FFT on the L2 time domain symbols performs an IDFT operation to obtain a modulation symbol after the L2 group IDFT;

The access network device performs each group of independent reverse cyclic shift operations on each group of the modulation symbols after the L1 group IDFT, to obtain a modulation symbol after the reverse cyclic shift of the L1 group; Each group of the modulation symbols after the L2 group IDFT performs each set of independent inverse cyclic shift operations to obtain a modulation symbol of the L2 group after the inverse cyclic shift; wherein, the modulation symbols of the L1 group are spread. The value of the inverse cyclic shift performed by each group is

The values of the inverse cyclic shifts performed on each of the L2 group of spread modulated symbols are

among them

Are all integers, and

a value of a basic cyclic shift of the current cell; the access network device performs despreading operation on the modulation symbol after the inverse cyclic shift of the L1 group by using a first orthogonal code sequence having a first code length L1, Obtaining a first group of modulation symbols; the access network device performing despreading operation on the modulation symbols after the inverse cyclic shift of the L2 group by using a second orthogonal code sequence having a second code length L2, to obtain a second group a modulation symbol; each of the first group of modulation symbols and the second group of modulation symbols includes K*N modulation symbols, where K is a natural number greater than 1, and N is a number of subcarriers included in one RB; The device demodulates the first group of modulation symbols and the second group of modulation symbols to obtain a demodulated coded bit stream; and the access network device performs a decoding operation on the demodulated coded bit stream Obtaining the original UCI carried in the uplink subframe.

The user equipment and the base station of the embodiment of the present invention are described in detail below with reference to FIG. 7 to FIG. Reasonable The user equipment in FIG. 7 and FIG. 9 can implement the steps performed by the user equipment in FIG. 4, and is not described in detail to avoid repetition; FIG. 8 and FIG. 10 can implement the implementation performed by the access network device in FIG. The various steps are not described in detail to avoid repetition.

FIG. 7 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 700 of FIG. 7 includes:

a generating unit 710, configured to generate a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, where the first group of modulation symbols and the second group of modulation symbols each include K×N modulation symbols, K is the number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB;

The spreading unit 720 is configured to spread the first group of modulation symbols by using a spreading code with a code length of L1 to obtain an L1 group modulation symbol, and use the spreading code with a code length of L2 to the second group. Modulating symbols for spreading, to obtain L2 group modulation symbols;

a first cyclic shift unit 730, configured to cyclically shift each set of modulation symbols in the L1 group modulation symbols to obtain a shifted L1 group modulation symbol, where the L1 group modulation symbol is The cyclic shift value used by the i-group modulation symbols when cyclically shifting

1≤i≤L1;

a second cyclic shifting unit 740, configured to cyclically shift each set of modulation symbols in the L2 group modulation symbols to obtain a shifted L2 group modulation symbol, where the L2 group modulation symbol is the first The cyclic shift value used by the j group modulation symbols when cyclically shifting

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell;

The transmitting unit 750 is configured to transmit, by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, the L1 group modulation symbols carried by the shift to the access network device. Uplink control information in the shifted L2 group modulation symbols.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, when the L1+L2 group modulation symbols are subjected to each group of independent cyclic shifts, the cyclic shift value used is K times of the cell-specific basic cyclic shift value of the current cell, so that when When the time-frequency resources of the single RB and the multiple RBs are overlapped, the orthogonality between the PFs of each type can be ensured, and the mutual interference is reduced.

Optionally, as an embodiment, the transmitting unit 750 is specifically configured to perform a discrete Fourier transform DFT on the shifted L1 group modulation symbols to obtain an L1 group modulation symbol after DFT; The shifted L2 group modulation symbol is DFT, and the L2 group tone after DFT is obtained. Generating a symbol; mapping the L1 group modulation symbols after the DFT to L1 time domain symbols in the first slot, and mapping the L1 group modulation symbols to K in the first slot RB; mapping the L2 group modulation symbols after the DFT to L2 time domain symbols in the second slot, and the mapped L2 group modulation symbols occupy K RBs in the second slot Performing inverse fast Fourier transform IFFT on the mapped L1 group modulation symbols to obtain L1 group modulation symbols after IFFT; respectively performing IFFT on the mapped L2 group modulation symbols to obtain an L2 group after IFFT Transmitting a symbol; transmitting, by the first time slot and the second time slot, the L1 group modulation symbol after the IFFT and the L2 group modulation symbol after the IFFT to the access network device, respectively The access network device transmits the uplink control information.

Optionally, in an embodiment, the generating unit 710 is specifically configured to: encode the uplink control information to obtain encoded uplink control information, and perform modulation on the encoded uplink control information to obtain the A set of modulation symbols and the second set of modulation symbols.

Optionally, as an embodiment, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource, where the first time-frequency resource is included. The number of RBs is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

Optionally, as an embodiment, the user equipment 700 is configured with a first downlink subframe set or a second downlink subframe set, where the number of subframes included in the first downlink subframe set is greater than the The number of subframes included in the second downlink subframe set, where the user equipment 700 transmits the uplink control information corresponding to the first downlink subframe set in the uplink subframe, occupied by each time slot The number of RBs is greater than the number of RBs occupied by each time slot when the user equipment sends the uplink control information corresponding to the second downlink subframe set in the uplink subframe.

Optionally, as an embodiment, the user equipment 700 is configured with a first downlink subframe set, where the first downlink subframe set includes a first subset and a second subset, where the first The subset is a true subset of the second subset, and the user equipment 700 uses the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe, and is occupied by each time slot. The RB number is smaller than the number of RBs occupied by each time slot when the user equipment transmits the uplink control information corresponding to the downlink subframe in the second subset in the uplink subframe.

Optionally, as an embodiment, the transmitting unit 750 is further configured to send, in the at least one time domain symbol of the uplink subframe, a demodulation reference signal DMRS to the access network device, where each time domain The DMRS sequence in the symbol includes a sequence in which the K segment is generated based on the length N.

Optionally, as an embodiment, when the value of K is different, the maximum number of bits of the uplink control information that the user equipment 700 can transmit is different.

FIG. 8 is a schematic block diagram of an access network device according to an embodiment of the present invention. The access network device 800 of Figure 8 includes:

The first obtaining unit 810 is configured to obtain L1 group modulation symbols from L1 time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols. , K is the number of resource blocks RB used to carry uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB;

a second acquiring unit 820, configured to acquire L2 group modulation symbols from L2 time-domain symbols in the K RBs in the second slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols ;

a first transform unit 830, configured to perform inverse discrete Fourier transform IDFT on the L1 group modulation symbols respectively, to obtain an L1 group modulation symbol after the IDFT;

a second changing unit 840, configured to perform IDFT on the L2 group modulation symbols respectively, to obtain an L2 group modulation symbol after the IDFT;

a first inverse cyclic shifting unit 850, configured to respectively perform inverse cyclic shift on each set of modulation symbols in the L1 group modulation symbols after the IDFT, to obtain an L1 group modulation symbol after inverse cyclic shift, where The cyclic shift value used by the i-th modulation symbol in the L1 group modulation symbol after IDFT in the inverse cyclic shift

1≤i≤L1;

a second inverse cyclic shifting unit 860, configured to respectively perform inverse cyclic shift on each set of modulation symbols in the L2 group modulation symbols after the IDFT, to obtain an L2 group modulation symbol after inverse cyclic shift, where The cyclic shift value used by the j-th modulation symbol in the L2 group modulation symbol after the IDFT in the inverse cyclic shift

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell;

The first despreading unit 870 is configured to despread the inverse cyclically shifted L1 group modulation symbols by using a spreading code with a code length of L1 to obtain a first group of modulation symbols, where the first group of modulation symbols includes K× N modulation symbols;

The second despreading unit 880 is configured to despread the inverse cyclically shifted L2 group modulation symbols by using a spreading code with a code length of L2 to obtain a second group of modulation symbols, where the second group of modulation symbols includes K× N modulation symbols;

a third acquiring unit 890, configured to acquire, by using the first group of modulation symbols and the second group The uplink control information in the modulation symbol.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, the cyclic shift value used when performing each set of independent inverse cyclic shift on the L1+L2 group modulation symbols after the IDFT is K times the cell-specific basic cyclic shift value of the current cell. In this way, when time-frequency resources of a single RB and multiple RBs are used in an overlapping manner, orthogonality between the PFs of each type can be ensured, and interference between each other can be reduced.

Optionally, as an embodiment, the third obtaining unit 890 is specifically configured to separately demodulate the first group of modulation symbols and the second group of modulation symbols to obtain a demodulated encoded bit stream; The encoded bit stream is decoded to obtain the uplink control information.

Optionally, as an embodiment, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource, where the first time-frequency resource is included. The number of RBs is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

Optionally, as an embodiment, the access network device 800 configures, for the user equipment, a first downlink subframe set or a second downlink subframe set, where the first downlink subframe set is included. The number of subframes is greater than the number of subframes included in the second downlink subframe set, and the access network device 800 receives the uplink control information corresponding to the first downlink subframe set in the uplink subframe. The number of RBs occupied by each time slot is greater than the number of RBs occupied by each time slot when the access network device 800 receives the uplink control information corresponding to the second downlink subframe set in the uplink subframe. number.

Optionally, as an embodiment, the access network device 800 configures, for the user equipment, a first downlink subframe set, where the first downlink subframe set includes a first subset and a second sub The first subset is the true subset of the second subset, and the access network device 800 receives the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe. When the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframe in the second subset of the access network device, the time slot is occupied by each time slot. The number of RBs.

Optionally, as an embodiment, the demodulation reference signal DMRS sequence in one time domain symbol of the uplink subframe includes a sequence in which the K segment is generated based on the length N.

FIG. 9 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 900 of FIG. 9 includes:

The processor 910 is configured to generate a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, where the first group of modulation symbols and the second group of modulation symbols each include K×N modulation symbols. K is the number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB; the code length is The spreading code of L1 spreads the first group of modulation symbols to obtain L1 group modulation symbols, and spreads the second group of modulation symbols by using a spreading code with a code length of L2 to obtain L2 group modulation symbols. And cyclically shifting each set of modulation symbols in the L1 group modulation symbols to obtain a shifted L1 group modulation symbol, wherein the ith group modulation symbols in the L1 group modulation symbols are cyclically shifted The cyclic shift value used is

1≤i≤L1; cyclically shifting each set of modulation symbols in the L2 group modulation symbols to obtain a shifted L2 group modulation symbol, wherein the jth group modulation symbol in the L2 group modulation symbol The cyclic shift value used when cyclically shifting

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell;

The transmitter 920 is configured to transmit, by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, the L1 group modulation symbols carried by the shift to the access network device. Uplink control information in the shifted L2 group modulation symbols.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, when the L1+L2 group modulation symbols are subjected to each group of independent cyclic shifts, the cyclic shift value used is K times of the cell-specific basic cyclic shift value of the current cell, so that when When the time-frequency resources of the single RB and the multiple RBs are overlapped, the orthogonality between the PFs of each type can be ensured, and the mutual interference is reduced.

Optionally, as an embodiment, the processor 910 is specifically configured to perform a discrete Fourier transform DFT on the shifted L1 group modulation symbols to obtain L1 group modulation symbols after DFT; Performing DFT on the shifted L2 group modulation symbols to obtain L2 group modulation symbols after DFT; mapping the L1 group modulation symbols after the DFT to L1 time domain symbols in the first time slot, and mapping The L1 group modulation symbols occupy the K RBs in the first time slot; the L2 group modulation symbols after the DFT are respectively mapped to the L2 time domain symbols in the second time slot, and after mapping The L2 group modulation symbols occupy K RBs in the second time slot; respectively perform inverse fast Fourier transform IFFT on the mapped L1 group modulation symbols to obtain L1 group modulation symbols after IFFT; Performing IFFT on the mapped L2 group modulation symbols to obtain an L2 group modulation symbol after IFFT; transmitting the L1 after the IFFT to the access network device by using the first time slot and the second time slot, respectively Group modulation symbols and L2 group modulation symbols after the IFFT, so as to The access network device transmits the uplink control information.

Optionally, as an embodiment, the processor 910 is specifically configured to: encode the uplink control information to obtain encoded uplink control information, and perform modulation on the encoded uplink control information to obtain the A set of modulation symbols and the second set of modulation symbols.

Optionally, as an embodiment, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource, where the first time-frequency resource is included. The number of RBs is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

Optionally, as an embodiment, the user equipment 900 is configured with a first downlink subframe set or a second downlink subframe set, where the number of subframes included in the first downlink subframe set is greater than the The number of subframes included in the second downlink subframe set, where the user equipment 900 transmits the uplink control information corresponding to the first downlink subframe set in the uplink subframe, occupied by each time slot The number of RBs is greater than the number of RBs occupied by each time slot when the user equipment sends the uplink control information corresponding to the second downlink subframe set in the uplink subframe.

Optionally, as an embodiment, the user equipment 900 is configured with a first downlink subframe set, where the first downlink subframe set includes a first subset and a second subset, where the first The sub-set is a true subset of the second subset, and when the user equipment 900 transmits the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe, each time slot is occupied. The RB number is smaller than the number of RBs occupied by each time slot when the user equipment transmits the uplink control information corresponding to the downlink subframe in the second subset in the uplink subframe.

Optionally, as an embodiment, the transmitter 920 is further configured to send, in the at least one time domain symbol of the uplink subframe, a demodulation reference signal DMRS to the access network device, where each time domain The DMRS sequence in the symbol includes a sequence in which the K segment is generated based on the length N.

Optionally, as an embodiment, when the value of K is different, the maximum number of bits of the uplink control information that the user equipment 900 can transmit is different.

FIG. 10 is a schematic block diagram of an access network device according to an embodiment of the present invention. The access network device 1000 of Figure 10 includes:

The receiver 1010 is configured to receive a signal in an uplink subframe.

The processor 1020 is configured to obtain L1 group modulation symbols from L1 time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols, K For the number of resource blocks RB used to carry the uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB; Obtaining L2 group modulation symbols on L2 time domain symbols in the K RBs in the second slot of the frame, where each group of modulation symbols includes K×N modulation symbols; respectively performing inverse discrete Fu on the L1 group modulation symbols Transforming the IDFT to obtain the L1 group modulation symbols after the IDFT; respectively performing IDFT on the L2 group modulation symbols to obtain the L2 group modulation symbols after the IDFT; respectively, each group of the L1 group modulation symbols after the IDFT The modulation symbol is inversely cyclically shifted to obtain an L1 group modulation symbol after the inverse cyclic shift, wherein the cyclic shift value used by the i-th modulation symbol in the L1 group modulation symbol after the IDFT is reversed cyclically shifted for

1≤i≤L1; respectively performing inverse cyclic shift on each group of modulation symbols in the L2 group modulation symbols after the IDFT, to obtain an L2 group modulation symbol after inverse cyclic shift, wherein the L2 group after the IDFT The cyclic shift value used by the j-th modulation symbol in the modulation symbol in the inverse cyclic shift

1≤j≤L2,

with

Each represents a cell-specific basic cyclic shift value of the current cell; the L1 group of modulation symbols after the inverse cyclic shift is despread using a spreading code having a code length of L1, to obtain a first group of modulation symbols, the first group The modulation symbol includes K×N modulation symbols; the inverse cyclically shifted L2 group modulation symbols are despread using a spreading code having a code length of L2 to obtain a second group of modulation symbols, and the second group of modulation symbols includes K × N modulation symbols; acquiring the uplink control information carried in the first group of modulation symbols and the second group of modulation symbols.

In the embodiment of the present invention, the existing PF3 of a single RB is extended to the PF3 of multiple RBs, which can support a larger number of carrier aggregations and support more bits of ACK/NACK feedback. Further, in the embodiment of the present invention, the cyclic shift value used when performing each set of independent inverse cyclic shift on the L1+L2 group modulation symbols after the IDFT is K times the cell-specific basic cyclic shift value of the current cell. In this way, when time-frequency resources of a single RB and multiple RBs are used in an overlapping manner, orthogonality between the PFs of each type can be ensured, and interference between each other can be reduced.

Optionally, as an embodiment, the processor 1020 is specifically configured to separately demodulate the first group of modulation symbols and the second group of modulation symbols to obtain a demodulated coded bit stream; The encoded bit stream is decoded to obtain the uplink control information.

Optionally, as an embodiment, the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource, where the first time-frequency resource is included. The number of RBs is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.

Optionally, as an embodiment, the access network device 1000 configures the user equipment. The first downlink subframe set or the second downlink subframe set, where the number of subframes included in the first downlink subframe set is greater than the number of subframes included in the second downlink subframe set, and the When the network access device 800 receives the uplink control information corresponding to the first downlink subframe set in the uplink subframe, the number of RBs occupied by each time slot is greater than the uplink of the access network device 1000. The number of RBs occupied by each time slot when receiving the uplink control information corresponding to the second downlink subframe set in the subframe.

Optionally, as an embodiment, the access network device 1000 configures, for the user equipment, a first downlink subframe set, where the first downlink subframe set includes a first subset and a second sub The first subset is the true subset of the second subset, and the access network device 1000 receives the uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe. When the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframe in the second subset of the access network device, the time slot is occupied by each time slot. The number of RBs.

Optionally, as an embodiment, the demodulation reference signal DMRS sequence in one time domain symbol of the uplink subframe includes a sequence in which the K segment is generated based on the length N.

The method for transmitting uplink control information, the user equipment, and the access network device described above extend the PF3 of the single RB to the PF3 of the multiple RBs, thereby increasing the bit capacity supported by the PF3, but the embodiment of the present invention is not limited thereto. The code length of the spreading code can also be adjusted to increase the number of modulation symbols in the spreading operation in one slot, thereby achieving the purpose of increasing the bit capacity supported by the PF3, which is specifically discussed below.

In the prior art, in one slot of an uplink subframe, a set of modulation symbols is obtained before the spreading operation, so that the spreading operation in one slot is performed only for the group of modulation symbols, for example, using spread spectrum. The orthogonal code sequence having a code length of 5 is spread (not spread by using other orthogonal code sequences of an integer length greater than 1), and the set of modulation symbols is generated into five sets of spread modulated symbols. The design method of the cyclic shift value in the embodiment of the present invention may further extend the operation of separately spreading the multiple sets of modulation symbols in one slot, so that the bit capacity of the PF3 of the single RB or the multiple RBs may be further increased, and the similar loop The method of determining the shift value can still support time-frequency resource overlap between PF3s of different K values but maintain orthogonality by time domain spreading codes. A detailed description will be made below with reference to FIG.

FIG. 11 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention. The method of Figure 11 includes:

1110. The user equipment generates modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ carrying uplink control information, where the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ each include K×N modulations. a symbol, K is the number of RBs used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB;

1120. The user equipment performs spreading on the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ by using spreading codes of code lengths L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ respectively to obtain L _{11 .} , L ₁₂ , L ₂₁ and L ₂₂ sets of modulation symbols;

1130, respectively, the user equipment the set of modulation symbols for each set of modulation symbols L ₁₁ performs cyclic shift set of modulation symbols to obtain L ₁₁ after the shifting, respectively, each pair of L ₁₂ in the set of modulation symbols A set of modulation symbols are cyclically shifted to obtain a shifted L ₁₂ modulation symbol, and each of the L ₂₁ sets of modulation symbols is cyclically shifted to obtain a shifted L ₂₁ set of modulation symbols. And cyclically shifting each of the L ₂₂ sets of modulation symbols to obtain a shifted L ₂₂ set of modulation symbols, wherein the ith set of modulation symbols in the L ₁₁ sets of modulation symbols are in a loop The cyclic shift value used when shifting

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols when cyclically shifting

The cyclic shift value used when the s group modulation symbol of the L ₂₁ group modulation symbols is cyclically shifted

The cyclic shift value used by the t-th modulation symbol in the L ₂₂ group modulation symbols when cyclically shifting

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Each represents a cell-specific basic cyclic shift value of the current cell;

1140. The user equipment transmits the shifted L ₁₁ and L ₁₂ to the access network device by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot. The set of modulation symbols, and the uplink control information in the L ₂₁ and L ₂₂ sets of modulation symbols.

In the embodiment of the present invention, by performing a plurality of spreading operations in one time slot of the uplink subframe, the maximum bit capacity that the existing PF3 can support is expanded, and the utilization of the time-frequency resource is improved.

Optionally, the step 1140 may include: the user equipment performs DFT on each of the shifted L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ sets of modulation symbols to obtain an L after the DFT. ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ sets of modulation symbols; the user equipment maps each of the L ₁₁ and L ₁₂ sets of modulation symbols after the DFT to the first time slot respectively L ₁₁ + L ₁₂ time domain symbols, and the mapped L ₁₁ + L ₁₂ sets of modulation symbols occupy K RBs in the first time slot; the user equipment will L ₂₁ and L after the DFT Each of the ₂₂ sets of modulation symbols is mapped to L ₂₁ + L ₂₂ time domain symbols in the second time slot, respectively, and the mapped L ₂₁ + L ₂₂ sets of modulation symbols occupy the second K RBs in a time slot; the user equipment performs IFFT on the mapped L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ modulation symbols respectively, and obtains L ₁₁ , L ₁₂ , L ₂₁ and L after IFFT ₂₂ set of modulation symbols; the user equipment through respectively said first slot and said second slot, then L ₁₁ and L ₁₂ set of modulation symbols for transmitting the IFFT to the network device, L ₂₁ and L ₂₂ and a set of modulation symbols for the uplink transmission control information to the access network device.

In addition, methods such as encoding and rate matching before obtaining modulation symbols, and time-frequency resource overlap of PF3 with different K values, DMRS generation, and PF3 back-off based on the first subset are similar to the foregoing embodiments. No longer.

The following is a description of the manner in which a plurality of sets of frequency-spreading are performed on a time slot in conjunction with FIG. 12, and it should be understood that the example of FIG. 12 is merely for helping those skilled in the art to understand the embodiment of the present invention, and is not intended to limit the embodiments of the present invention. The specific numerical values or specific scenarios illustrated. A person skilled in the art will be able to make various modifications and changes in accordance with the example of FIG. 12, and such modifications or variations are also within the scope of the embodiments of the present invention.

In Fig. 12, it is assumed that N=4, K=2, L11=L12=2, and only the signal generation mode of PF3 in one slot is selected, and the PF3 signal generation manner of the other slot is similar. It is assumed that the UE1 uses the PF3 of the single RB in FIG. 12, and the UE2 uses the PF3 of the dual RB in FIG. 7. The PF3 generation process may be: UE1 is subjected to channel coding, and the rate matching is obtained after mapping to a time slot. The two sets of original modulation symbols are {a11, a21, a31, a41} and {a12, a22, a32, a42}, and then the two sets of original modulation symbols pass through two sets of orthogonal codes {1, 1} and {1 , -1} spread spectrum, then cyclic shift per time domain symbol {0,1,2,3}; UE2 is channel coded, the two sets of original modulation obtained after rate matching will be mapped into one time slot The symbols are {b11, b21, b31, b41, b51, b61, b71, b81} and {b12, b22, b32, b42, b52, b62, b72, b82}, and then pass through two sets of orthogonal codes {1, -1 The spreading of } and {1,1} is followed by a cyclic shift of {0, 2, 4, 6} per time domain symbol. Thereafter, UE1 and UE2 perform DFTs of lengths 4 and 8, respectively. Then, IFFT is performed and sent. The base station receives the UCI of UE1 and UE2 according to the inverse process described above.

It can be seen that two sets of original modulation symbols can be transmitted in each of the above time slots, so that only one original modulation symbol is transmitted compared to each time slot, the bit capacity of PF3 is further improved, and the implementation is implemented by the above. For example, the design of the cyclic shift value can realize that the single-RB and multi-RB PF3 can still guarantee the orthogonality of the two in the case of overlapping time-frequency resources.

With reference to FIG. 11, a method for transmitting uplink control information according to an embodiment of the present invention is described in detail from the perspective of a user equipment. Referring to FIG. 13, a transmission uplink control according to an embodiment of the present invention will be described from the perspective of an access network device. The method of information.

It should be understood that the interaction between the UE and the access network device described in the access network device side and related features, functions, and the like correspond to the descriptions on the UE side. For the sake of brevity, duplicate descriptions are omitted as appropriate.

FIG. 13 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention. The method of Figure 13 includes:

1310. The access network device acquires L ₁₁ sets of modulation symbols and L ₁₂ sets of modulation symbols from L ₁₁ and L ₁₂ time domain symbols in K resource blocks RB in the first time slot of the uplink subframe, where each The group modulation symbol includes K×N modulation symbols, K is the number of resource blocks RB for carrying uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is one RB. the number of subcarriers comprising; obtaining a set of modulation symbols L ₂₁ and L _{22 is} the set of modulation symbols L ₂₁ and L ₂₂ symbols of the K time-domain RB in the second time slot access network device from the uplink sub-frame, respectively, in Where each set of modulation symbols comprises K x N modulation symbols;

1320, respectively, the access network device of the set of modulation symbols for each set of modulation symbols L ₁₁ performs the IDFT, L ₁₁ obtained after the IDFT set of modulation symbols, respectively, and each group of L ₁₂ in the set of modulation symbols The modulation symbols are IDFT, and the L ₁₂ sets of modulation symbols after IDFT are obtained; the access network device respectively performs IDFT on each of the L ₂₁ sets of modulation symbols to obtain L ₂₁ sets of modulation symbols after IDFT, And performing IDFT on each of the L ₂₂ sets of modulation symbols, to obtain L ₂₂ sets of modulation symbols after IDFT;

1330, respectively, the access network device for each set of modulation symbols L ₁₁ set of modulation symbols after the IDFT in the inverse cyclic shift set of modulation symbols to obtain L ₁₁ after the reverse cyclic shift, on each of the Each group of modulation symbols in the L ₁₂ group modulation symbols after IDFT is inversely cyclically shifted to obtain L ₁₂ sets of modulation symbols after inverse cyclic shift, respectively, for each of the L ₂₁ sets of modulation symbols after the IDFT The group modulation symbols are inversely cyclically shifted, and the L ₂₁ sets of modulation symbols after the inverse cyclic shift are obtained, and each set of modulation symbols in the L ₂₂ sets of modulation symbols after the IDFT are respectively inversely cyclically shifted to obtain a reverse cycle. a shifted L ₂₂ set of modulation symbols, wherein a cyclic shift value used by the i-th set of modulation symbols in the L ₁₁ set of modulation symbols after the IDFT is reversed cyclically shifted

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used by the jth group modulation symbol in the L ₂₁ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used in the inverse cyclic shift of the j-th modulation symbol in the L ₂₂ group modulation symbols after the IDFT

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Each represents a cell-specific basic cyclic shift value of the current cell;

1340. The access network device uses the spreading codes of L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ respectively to perform L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ modulation symbols after inverse cyclic shifting, respectively. Despreading, obtaining modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ , wherein the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ each comprise K×N modulation symbols;

1350. The access network device acquires the uplink control information carried in the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ .

Optionally, before the step 1310, the method of FIG. 13 may further include: the access network device performs an FFT operation on the received signal in the uplink subframe, to obtain K in the first time slot in the uplink subframe. L ₁₁ and L ₁₂ L ₁₁ and L ₁₂ th set of modulation symbols in the time domain symbols in RB; access network apparatus of the uplink sub-frame of the received signal subjected to FFT operation, to obtain a second uplink subframe L ₂₁ and L L ₂₁ and L ₂₂ set of modulation symbols on a symbol of the slot ₂₂ in the time-domain RB in the K.

Optionally, the step 1350 may include: the access network device demodulating the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y _{22 respectively} to obtain a demodulated encoded bit stream; The network device decodes the encoded bit stream to obtain the uplink control information.

In addition, the time-frequency resources of the PFs of different K values are overlapped, the channel estimation and demodulation are performed using the DMRS, and the PF3 back-off based on the first subset is similar to the foregoing embodiment, and details are not described herein again.

It can be seen that two sets of original modulation symbols can be transmitted in each of the above time slots, so that only one original modulation symbol is transmitted compared to each time slot, the bit capacity of PF3 is further improved, and the implementation is implemented by the above. For example, the design of the cyclic shift value can realize that the single-RB and multi-RB PF3 can still guarantee the orthogonality of the two in the case of overlapping time-frequency resources.

A method for transmitting uplink control information according to an embodiment of the present invention is described in detail above with reference to FIG. 11 and FIG. 13, and a user equipment and an access network device according to an embodiment of the present invention are described in detail below with reference to FIGS. 14 through 17. It should be understood that the user equipments in FIG. 14 and FIG. 16 can implement the various steps performed by the user equipment in FIG. 11, and FIG. 15 and FIG. 17 can implement the steps performed by the access network device in FIG. More details.

FIG. 14 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 1400 of Figure 14 includes:

The generating unit 1410 is configured to generate modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ carrying uplink control information, where the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ each include K×N a modulation symbol, K is the number of RBs used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB;

The spreading unit 1420 is configured to separately spread the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ by using spreading codes of code lengths L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ respectively L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ group modulation symbols;

The cyclic shift unit 1430 is configured to cyclically shift each of the L ₁₁ sets of modulation symbols to obtain the shifted L ₁₁ sets of modulation symbols, respectively, for the L ₁₂ sets of modulation symbols Each set of modulation symbols is cyclically shifted to obtain a shifted L ₁₂ modulation symbol, and each of the L ₂₁ sets of modulation symbols is cyclically shifted to obtain a shifted L ₂₁ group. a modulation symbol, wherein each of the L ₂₂ sets of modulation symbols is cyclically shifted to obtain a shifted L ₂₂ set of modulation symbols, wherein the ith set of modulation symbols in the L ₁₁ sets of modulation symbols The cyclic shift value used when cyclically shifting

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols when cyclically shifting

The cyclic shift value used when the s group modulation symbol of the L ₂₁ group modulation symbols is cyclically shifted

The cyclic shift value used by the t-th modulation symbol in the L ₂₂ group modulation symbols when cyclically shifting

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Each represents a cell-specific basic cyclic shift value of the current cell;

The sending unit 1440 is configured to transmit, by the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, to the access network device by using the shifted L ₁₁ and L ₁₂ The set of modulation symbols, and the uplink control information in the L ₂₁ and L ₂₂ sets of modulation symbols.

In the embodiment of the present invention, by performing a plurality of spreading operations in one time slot of the uplink subframe, the maximum bit capacity that the existing PF3 can support is expanded, and the utilization of the time-frequency resource is improved.

Optionally, the sending unit 1440 is specifically configured to perform DFT on each of the grouped modulation symbols in the shifted L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ sets to obtain L ₁₁ after DFT. , L ₁₂ , L ₂₁ and L ₂₂ sets of modulation symbols; respectively mapping each of the L ₁₁ and L ₁₂ sets of modulation symbols after the DFT to L ₁₁ +L _{12 in} the first time slot On the time domain symbols, and the mapped L ₁₁ + L ₁₂ sets of modulation symbols occupy K RBs in the first time slot; each of the L ₂₁ and L ₂₂ sets of modulation symbols after the DFT The modulation symbols are respectively mapped to L ₂₁ + L ₂₂ time domain symbols in the second time slot, and the mapped L ₂₁ + L ₂₂ group modulation symbols occupy K RBs in the second time slot; respectively of L ₁₁ after the mapping, L _12, L ₂₁ and L ₂₂ set of modulation symbols _{IFFT, L 11, L 12,} L 21 and L ₂₂ to obtain the set of modulation symbols after the IFFT; respectively said first slot and said second slot, L ₁₁ and L ₁₂ to the set of modulation symbols after the transmission of the access network device the IFFT, L ₂₁ and L ₂₂ and the set of modulation symbols, in order to access the network device to transmit the Said Line control information.

FIG. 15 is a schematic block diagram of an access network device according to an embodiment of the present invention. The access network device 1500 of Figure 15 includes:

The first obtaining unit 1510 is configured to obtain L ₁₁ sets of modulation symbols and L ₁₂ sets of modulation symbols from L ₁₁ and L ₁₂ time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, respectively. Each group of modulation symbols includes K×N modulation symbols, where K is the number of resource blocks RB used to carry uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is 1 RB. the number of subcarriers contained in and obtained from the L ₂₁ and L ₂₂ symbols of the K time-domain RB in the second time slot in the uplink subframe set of modulation symbols, respectively, L ₂₁ and L ₂₂ set of modulation symbols, Wherein each group of modulation symbols comprises K×N modulation symbols;

The transform unit 1520 is configured to perform IDFT on each of the L ₁₁ sets of modulation symbols, to obtain L ₁₁ sets of modulation symbols after the IDFT, and respectively perform modulation signals for each of the L ₁₂ sets of modulation symbols. perform IDFT, obtain a set of modulation symbols L ₁₂ of the IDFT; and each set of modulation symbols for each of the set of modulation symbols L ₂₁ performs IDFT, obtain a set of modulation symbols L ₂₁ after IDFT, and each of said L ₂₂ Each group of modulation symbols in the group modulation symbol is IDFT, and the L ₂₂ group modulation symbols after IDFT are obtained;

The inverse cyclic shifting unit 1530 is configured to perform inverse cyclic shift on each of the L ₁₁ sets of modulation symbols after the IDFT, to obtain L ₁₁ sets of modulation symbols after inverse cyclic shift, respectively Each set of modulation symbols in the L ₁₂ sets of modulation symbols after the IDFT is subjected to inverse cyclic shift, and the L ₁₂ sets of modulation symbols after the inverse cyclic shift are obtained, and each of the L ₂₁ sets of modulation symbols after the IDFT is respectively A set of modulation symbols are inversely cyclically shifted, and L ₂₁ sets of modulation symbols after inverse cyclic shift are obtained, and each set of modulation symbols in the L ₂₂ sets of modulation symbols after the IDFT are respectively inversely cyclically shifted to obtain an inverse a cyclically shifted L ₂₂ set of modulation symbols, wherein the cyclic shift value used by the i-th set of modulation symbols in the L ₁₁ sets of modulation symbols after the IDFT is inversely cyclically shifted

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used by the jth group modulation symbol in the L ₂₁ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used in the inverse cyclic shift of the j-th modulation symbol in the L ₂₂ group modulation symbols after the IDFT

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Each represents a cell-specific basic cyclic shift value of the current cell;

Despreading unit 1540, configured to solve the L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ sets of modulation symbols after inverse cyclic shift, respectively, using spreading codes having code lengths of L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ Dividing, obtaining modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ , wherein the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ each comprise K×N modulation symbols;

The second obtaining unit 1550 is configured to acquire the uplink control information that is carried in the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ .

Optionally, the transforming unit 1520 is further configured to perform an FFT operation on the received signal in the uplink subframe to obtain L ₁₁ and L ₁₂ time domains in the K RBs in the first time slot in the uplink subframe. L ₁₁ and L ₁₂ sets of modulation symbols on the symbol; the access network device performs an FFT operation on the received signal in the uplink subframe to obtain L ₂₁ of the K RBs in the second slot in the uplink subframe And L ₂₁ and L ₂₂ sets of modulation symbols on the ₂₂ time domain symbols.

Optionally, the second obtaining unit 1550 is specifically configured to separately demodulate the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ to obtain a demodulated encoded bit stream; The stream is decoded to obtain the uplink control information.

FIG. 16 is a schematic block diagram of a user equipment according to an embodiment of the present invention. The user equipment 1600 of Figure 16 includes:

The processor 1610 is configured to generate modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ carrying uplink control information, where the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ each include K×N Modulation symbol, K is the number of RBs used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB; Spreading codes of lengths L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ respectively spread the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ to obtain L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ set of modulation symbols; each set of modulation symbols for each of the set of modulation symbols L ₁₁ performs cyclic shift set of modulation symbols to obtain L ₁₁ after the shifting, respectively, each pair of L ₁₂ in the set of modulation symbols A set of modulation symbols are cyclically shifted to obtain a shifted L ₁₂ modulation symbol, and each of the L ₂₁ sets of modulation symbols is cyclically shifted to obtain a shifted L ₂₁ set of modulation symbols. , respectively, for each set of modulation symbols for the set of modulation symbols L ₂₂ is cyclically shifted, L ₂₂ obtained after shifting ganged Symbol, where i-th cycle the set of modulation symbols L ₁₁ in the set of modulation symbols used when the cyclic shift offset value

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols when cyclically shifting

The cyclic shift value used when the s group modulation symbol of the L ₂₁ group modulation symbols is cyclically shifted

The cyclic shift value used by the t-th modulation symbol in the L ₂₂ group modulation symbols when cyclically shifting

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Each represents a cell-specific basic cyclic shift value of the current cell;

The transmitter 1620 is configured to transmit, by the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, the L ₁₁ and the L _{12 that are} carried by the access network device. The set of modulation symbols, and the uplink control information in the L ₂₁ and L ₂₂ sets of modulation symbols.

In the embodiment of the present invention, by performing a plurality of spreading operations in one slot of the uplink subframe, the expansion It fills the maximum bit capacity that the existing PF3 can support, and improves the utilization of time-frequency resources.

Optionally, the processor 1610 is specifically configured to perform DFT on each of the shifted L ₁₁ , L ₁₂ , L _{21 ,} and L ₂₂ modulation symbols to obtain L ₁₁ after DFT. , L ₁₂ , L ₂₁ and L ₂₂ sets of modulation symbols; respectively mapping each of the L ₁₁ and L ₁₂ sets of modulation symbols after the DFT to L ₁₁ +L _{12 in} the first time slot On the time domain symbols, and the mapped L ₁₁ + L ₁₂ sets of modulation symbols occupy K RBs in the first time slot; each of the L ₂₁ and L ₂₂ sets of modulation symbols after the DFT The modulation symbols are respectively mapped to L ₂₁ + L ₂₂ time domain symbols in the second time slot, and the mapped L ₂₁ + L ₂₂ group modulation symbols occupy K RBs in the second time slot; respectively of L ₁₁ after the mapping, L _12, L ₂₁ and L ₂₂ set of modulation symbols _{IFFT, L 11, L 12,} L 21 and L ₂₂ to obtain the set of modulation symbols after the IFFT; respectively said first slot and said second slot, L ₁₁ and L ₁₂ to the set of modulation symbols after the transmission of the access network device the IFFT, L ₂₁ and L ₂₂ and the set of modulation symbols, in order to access the network device to transmit the Upward Control information.

FIG. 17 is a schematic block diagram of an access network device according to an embodiment of the present invention. The access network device 1700 of Figure 17 includes:

The receiver 1710 is configured to receive a signal in an uplink subframe.

The processor 1720 is configured to separately acquire L ₁₁ sets of modulation symbols and L ₁₂ sets of modulation symbols from L ₁₁ and L ₁₂ time domain symbols in the K resource block RBs in the first time slot of the uplink subframe, where each The group modulation symbol includes K×N modulation symbols, K is the number of resource blocks RB for carrying uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is one RB. The number of subcarriers included, and respectively acquires L ₂₁ sets of modulation symbols and L ₂₂ sets of modulation symbols from L ₂₁ and L ₂₂ time domain symbols in K RBs in the second slot of the uplink subframe, where each comprises a set of modulation symbols K × N modulation symbols respectively; the set of modulation symbols for each set of modulation symbols L ₁₁ performs IDFT, obtain a set of modulation symbols L ₁₁ after IDFT, and each of L ₁₂ in the set of modulation symbols each set of modulation symbols IDFT, obtain a set of modulation symbols L ₁₂ of the IDFT; and each set of modulation symbols for each of the set of modulation symbols L ₂₁ performs IDFT, L ₂₁ to obtain the set of modulation symbols IDFT, respectively, and Performing IDFT on each of the L ₂₂ sets of modulation symbols to obtain L after IDFT ₂₂ set of modulation symbols; each set of modulation symbols for each set of modulation symbols L ₁₁ after IDFT in the inverse cyclic shift set of modulation symbols to obtain L ₁₁ after the reverse cyclic shift, respectively, after the IDFT Each group of modulation symbols of the L ₁₂ sets of modulation symbols is inversely cyclically shifted to obtain L ₁₂ sets of modulation symbols after inverse cyclic shift, and respectively for each set of modulation symbols of the L ₂₁ sets of modulation symbols after the IDFT Performing an inverse cyclic shift to obtain L ₂₁ sets of modulation symbols after inverse cyclic shift, respectively performing inverse cyclic shift on each set of modulation symbols in the L ₂₂ sets of modulation symbols after the IDFT, to obtain a reverse cyclic shift L ₂₂ sets of modulation symbols, wherein the cyclic shift value used in the inverse cyclic shift of the i-th modulation symbol in the L ₁₁ sets of modulation symbols after the IDFT

The cyclic shift value used by the jth group modulation symbol in the L ₁₂ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used by the jth group modulation symbol in the L ₂₁ group modulation symbols after the IDFT in the inverse cyclic shift

The cyclic shift value used in the inverse cyclic shift of the j-th modulation symbol in the L ₂₂ group modulation symbols after the IDFT

1 ≤ i ≤ L ₁₁ , 1 ≤ j ≤ L ₁₂ , 1 ≤ s ≤ L ₂₁ , 1 ≤ t ≤ L ₂₂ ;

with

Both represent the cell-specific basic cyclic shift values of the current cell; the spreading codes using the code lengths of L ₁₁ , L ₁₂ , L ₂₁ and L ₂₂ are respectively L ₁₁ , L ₁₂ , L ₂₁ and after the inverse cyclic shift L ₂₂ sets of modulation symbols are despread to obtain modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ , wherein the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ each comprise K×N modulation symbols Obtaining the uplink control information carried in the modulation symbol groups Y ₁₁ , Y ₁₂ , Y ₂₁ and Y ₂₂ .

Optionally, the processor 1720 is further configured to perform an FFT operation on the received signal in the uplink subframe to obtain L ₁₁ and L ₁₂ time domains in the K RBs in the first time slot in the uplink subframe. L ₁₁ and L ₁₂ sets of modulation symbols on the symbol; the access network device performs an FFT operation on the received signal in the uplink subframe to obtain L ₂₁ of the K RBs in the second slot in the uplink subframe And L ₂₁ and L ₂₂ sets of modulation symbols on the ₂₂ time domain symbols.

Optionally, the processor 1720 is specifically configured to separately demodulate the modulation symbol groups Y ₁₁ , Y ₁₂ , Y _{21 ,} and Y ₂₂ to obtain a demodulated encoded bit stream; perform the encoded bit stream. Decoding to obtain the uplink control information.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and may be implemented in actual implementation. In a different manner, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims (28)

1. A method for transmitting uplink control information, comprising:

   The user equipment generates a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, where the first group of modulation symbols and the second group of modulation symbols each include K×N modulation symbols, where K is The number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB;

   The user equipment spreads the first group of modulation symbols by using a spreading code with a code length of L1 to obtain an L1 group modulation symbol, and performs the second group modulation symbol by using a spreading code with a code length of L2. Spread spectrum to obtain L2 group modulation symbols;

   The user equipment cyclically shifts each set of modulation symbols in the L1 group modulation symbols to obtain a shifted L1 group modulation symbol, where an ith group modulation symbol in the L1 group modulation symbol is in a loop The cyclic shift value used when shifting

   

   1≤i≤L1;

   The user equipment cyclically shifts each lease modulation symbol in the L2 group modulation symbol to obtain a shifted L2 group modulation symbol, where the jth group modulation symbol in the L2 group modulation symbol is in a loop The cyclic shift value used when shifting

   

   1≤j≤L2,

   

   with

   

   Each represents a cell-specific basic cyclic shift value of the current cell;

   Transmitting, by the user equipment, the shifted L1 group modulation symbols and the K to the access network device by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot Uplink control information in the shifted L2 group modulation symbols.
2. The method according to claim 1, wherein the user equipment transmits the bearer to the access network device by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot. The uplink control information in the shifted L1 group modulation symbol and the shifted L2 group modulation symbol includes:

   Performing, by the user equipment, discrete Fourier transform DFT on the shifted L1 group modulation symbols to obtain L1 group modulation symbols after DFT;

   The user equipment respectively performs DFT on the shifted L2 group modulation symbols to obtain an L2 group modulation symbol after DFT;

   The user equipment maps the L1 group modulation symbols after the DFT to L1 time domain symbols in the first time slot, and the mapped L1 group modulation symbols occupy K in the first time slot. RB;

   The user equipment maps the L2 group modulation symbols after the DFT to the second time slot respectively L2 time domain symbols in the middle, and the mapped L2 group modulation symbols occupy K RBs in the second time slot;

   Performing inverse fast Fourier transform IFFT on the mapped L1 group modulation symbols to obtain an L1 group modulation symbol after IFFT;

   The user equipment performs IFFT on the mapped L2 group modulation symbols to obtain an L2 group modulation symbol after the IFFT;

   Transmitting, by the user equipment, the L1 group modulation symbol after the IFFT and the L2 group modulation symbol after the IFFT to the access network device by using the first time slot and the second time slot, respectively, The access network device transmits the uplink control information.
3. The method according to claim 1 or 2, wherein the user equipment generates a first group of modulation symbols and a second group of modulation symbols that carry uplink control information, including:

   The user equipment encodes the uplink control information to obtain coded uplink control information;

   The user equipment modulates the encoded uplink control information to obtain the first group of modulation symbols and the second group of modulation symbols.
4. The method according to any one of claims 1-3, wherein the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource. The number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource partially overlap.
5. The method according to any one of claims 1-4, wherein the user equipment is configured with a first downlink subframe set or a second downlink subframe set, the first downlink subframe set The number of subframes included in the second downlink subframe set is greater than the number of subframes included in the second downlink subframe set, and the user equipment transmits the uplink control information corresponding to the first downlink subframe set in the uplink subframe. The number of RBs occupied by each time slot is greater than the number of RBs occupied by each time slot when the user equipment sends the uplink control information corresponding to the second downlink subframe set in the uplink subframe.
6. The method according to any one of claims 1 to 5, wherein the user equipment is configured with a first downlink subframe set, wherein the first downlink subframe set includes a first subset and a second subset, the first subset is a true subset of the second subset, and the user equipment transmits uplink control information corresponding to the downlink subframe in the first subset in the uplink subframe The RB occupied by each time slot when the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframe in the second subset of the user equipment in the uplink subframe. number.
7. The method of any of claims 1-6, wherein the method further comprises:

   The user equipment sends a demodulation reference signal DMRS to the access network device in at least one time domain symbol of the uplink subframe, where the DMRS sequence in each time domain symbol includes a K segment generated based on the length N sequence.
8. The method according to any one of claims 1 to 7, wherein when the value of K is different, the maximum number of bits of the uplink control information that the user equipment can transmit is different.
9. A method for transmitting uplink control information, comprising:

   The access network device acquires L1 group modulation symbols from L1 time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols, where K is The number of resource blocks RBs for carrying uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB;

   The access network device acquires L2 group modulation symbols from L2 time domain symbols in the K RBs in the second time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols;

   The access network device performs inverse discrete Fourier transform IDFT on the L1 group modulation symbols to obtain an L1 group modulation symbol after the IDFT;

   The access network device performs IDFT on the L2 group modulation symbols to obtain an L2 group modulation symbol after the IDFT;

   The access network device respectively performs inverse cyclic shift on each group of modulation symbols in the L1 group modulation symbols after the IDFT, to obtain an L1 group modulation symbol after inverse cyclic shift, wherein the L1 group after the IDFT The cyclic shift value used by the i-th modulation symbol in the modulation symbol in the inverse cyclic shift

   

   1≤i≤L1;

   The access network device respectively performs inverse cyclic shift on each group of modulation symbols in the L2 group modulation symbols after the IDFT, to obtain an L2 group modulation symbol after inverse cyclic shift, wherein the L2 group after the IDFT The cyclic shift value used by the j-th modulation symbol in the modulation symbol in the inverse cyclic shift

   

   1≤j≤L2,

   

   with

   

   Each represents a cell-specific basic cyclic shift value of the current cell;

   The access network device despreads the inverse cyclically shifted L1 group modulation symbols by using a spreading code with a code length of L1 to obtain a first group of modulation symbols, where the first group of modulation symbols includes K×N modulations. symbol;

   The access network device despreads the inverse cyclically shifted L2 group modulation symbols by using a spreading code having a code length of L2 to obtain a second group of modulation symbols, where the second group of modulation symbols includes K×N modulations. symbol;

   The access network device acquires the uplink control information carried in the first group of modulation symbols and the second group of modulation symbols.
10. The method according to claim 9, wherein the access network device acquires uplink control information of the user equipment that is carried in the first group of modulation symbols and the second group of modulation symbols, and includes:

    The access network device demodulates the first group of modulation symbols and the second group of modulation symbols to obtain a demodulated encoded bit stream;

    The access network device decodes the encoded bit stream to obtain the uplink control information.
11. The method according to claim 9 or 10, wherein the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource, where the first The number of RBs included in the time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource partially overlaps with the second time-frequency resource.
12. The method according to any one of claims 9-11, wherein the access network device configures the first downlink subframe set or the second downlink subframe set for the user equipment, where the The number of subframes included in a downlink subframe set is greater than the number of subframes included in the second downlink subframe set, and the access network device receives the first downlink subframe in the uplink subframe When the uplink control information corresponding to the set is used, the number of RBs occupied by each time slot is greater than the uplink control information corresponding to the second downlink subframe set received by the access network device in the uplink subframe, The number of RBs occupied by time slots.
13. The method according to any one of claims 9 to 12, wherein the access network device configures a first downlink subframe set for the user equipment, wherein the first downlink subframe set The first subset and the second subset are included, the first subset is a true subset of the second subset, and the access network device receives the downlink in the first subset in the uplink subframe When the uplink control information corresponding to the subframe is used, the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframe in which the access network device transmits the second subset in the uplink subframe The number of RBs occupied by each time slot.
14. The method according to any one of claims 9 to 13, wherein the demodulation reference signal DMRS sequence in one time domain symbol of the uplink subframe comprises a sequence of K segments generated based on the length N.
15. A user equipment, comprising:

    a generating unit, configured to generate a first group of modulation symbols and a second group of modulation symbols carrying uplink control information, where the first group of modulation symbols and the second group of modulation symbols each include K×N modulation symbols, K For the number of resource blocks RB used to carry the uplink control information in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one resource block RB;

    a spreading unit, configured to spread the first group of modulation symbols by using a spreading code with a code length of L1 to obtain an L1 group modulation symbol, and use the spreading code with a code length of L2 to modulate the second group The symbol is spread to obtain an L2 group modulation symbol;

    a first cyclic shift unit, configured to cyclically shift each set of modulation symbols in the L1 group modulation symbols to obtain a shifted L1 group modulation symbol, where the ith of the L1 group modulation symbols The cyclic shift value used by the group modulation symbol when it is cyclically shifted

    

    1≤i≤L1;

    a second cyclic shift unit, configured to cyclically shift each set of modulation symbols in the L2 group modulation symbols to obtain a shifted L2 group modulation symbol, where the jth in the L2 group modulation symbol The cyclic shift value used by the group modulation symbol when it is cyclically shifted

    

    1≤j≤L2,

    

    with

    

    Each represents a cell-specific basic cyclic shift value of the current cell;

    a transmitting unit, configured to transmit, by using the K RBs in the first time slot of the uplink subframe and the K RBs in the second time slot, the L1 group modulation symbols and the bearer carried by the uplink network device The uplink control information in the shifted L2 group modulation symbols.
16. The user equipment according to claim 15, wherein the transmission unit is specifically configured to perform a discrete Fourier transform DFT on the shifted L1 group modulation symbols to obtain an L1 group modulation symbol after DFT; Performing DFT on the shifted L2 group modulation symbols respectively to obtain L2 group modulation symbols after DFT; mapping the L1 group modulation symbols after the DFT to L1 time domain symbols in the first time slot respectively Up, and the mapped L1 group modulation symbols occupy K RBs in the first time slot; and the DFT group L2 group modulation symbols are respectively mapped to L2 time domain symbols in the second time slot And the mapped L2 group modulation symbols occupy K RBs in the second time slot; respectively performing inverse fast Fourier transform IFFT on the mapped L1 group modulation symbols to obtain L1 group modulation symbols after IFFT Performing an IFFT on the mapped L2 group modulation symbols to obtain an L2 group modulation symbol after the IFFT; respectively transmitting, by using the first time slot and the second time slot, to the access network device L1 group modulation symbol after IFFT and L2 group modulation symbol after IFFT, so as to The access network device transmits the uplink control information.
17. The user equipment according to claim 15 or 16, wherein the generating unit is specifically configured to encode the uplink control information to obtain encoded uplink control information; The encoded uplink control information is modulated to obtain the first set of modulation symbols and the second set of modulation symbols.
18. The user equipment according to any one of claims 15-17, wherein the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource. And the number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource partially overlap.
19. The user equipment according to any one of claims 15 to 18, wherein the user equipment is configured with a first downlink subframe set or a second downlink subframe set, the first downlink subframe The number of subframes included in the set is greater than the number of subframes included in the second downlink subframe set, and the user equipment transmits the uplink control information corresponding to the first downlink subframe set in the uplink subframe. The number of RBs occupied by each time slot is greater than the number of RBs occupied by each time slot when the user equipment sends the uplink control information corresponding to the second downlink subframe set in the uplink subframe.
20. The user equipment according to any one of claims 15 to 19, wherein the user equipment is configured with a first downlink subframe set, wherein the first downlink subframe set includes a first subset And the second subset, the first subset is a true subset of the second subset, and the user equipment transmits the uplink control corresponding to the downlink subframe in the first subset in the uplink subframe When the information is used, the number of RBs occupied by each time slot is smaller than the uplink control information corresponding to the downlink subframes in the second subset of the user equipment in the uplink subframe. The number of RBs.
21. The user equipment according to any one of claims 15 to 20, wherein the transmitting unit is further configured to send a demodulation to the access network device in at least one time domain symbol of the uplink subframe. A reference signal DMRS, wherein the DMRS sequence in each time domain symbol comprises a sequence of K segments generated based on length N.
22. The user equipment according to any one of claims 15 to 21, wherein when the value of K is different, the maximum number of bits of uplink control information that can be transmitted by the user equipment is different.
23. An access network device, comprising:

    a first acquiring unit, configured to acquire L1 group modulation symbols from L1 time domain symbols in the K resource blocks RB in the first time slot of the uplink subframe, where each group of modulation symbols includes K×N modulation symbols, K is the number of resource blocks RB for carrying uplink control information of the user equipment in one slot, K is a positive integer greater than 1, and N is the number of subcarriers included in one RB;

    a second acquiring unit, configured to acquire L2 group modulation symbols from L2 time domain symbols in the K RBs in the second time slot of the uplink subframe, where each group of modulation symbols includes K×N modulators number;

    a first transform unit, configured to perform inverse discrete Fourier transform IDFT on the L1 group modulation symbols respectively, to obtain an L1 group modulation symbol after the IDFT;

    a second changing unit, configured to perform IDFT on the L2 group modulation symbols respectively, to obtain an L2 group modulation symbol after the IDFT;

    a first inverse cyclic shift unit, configured to respectively perform inverse cyclic shift on each set of modulation symbols in the L1 group modulation symbols after the IDFT, to obtain an L1 group modulation symbol after inverse cyclic shift, wherein the IDFT The cyclic shift value used in the inverse cyclic shift of the i-th modulation symbol in the latter L1 group modulation symbol

    

    1≤i≤L1;

    a second inverse cyclic shift unit, configured to respectively perform inverse cyclic shift on each set of modulation symbols in the L2 group modulation symbols after the IDFT, to obtain an L2 group modulation symbol after inverse cyclic shift, wherein the IDFT The cyclic shift value used by the j-th set of modulation symbols in the L2 group modulation symbols in the inverse cyclic shift

    

    1≤j≤L2,

    

    with

    

    Each represents a cell-specific basic cyclic shift value of the current cell;

    a first despreading unit, configured to despread the inverse cyclically shifted L1 group modulation symbols by using a spreading code with a code length of L1, to obtain a first group of modulation symbols, where the first group of modulation symbols includes K×N Modulation symbols;

    a second despreading unit, configured to despread the inverse cyclically shifted L2 group modulation symbols by using a spreading code with a code length of L2, to obtain a second group of modulation symbols, where the second group of modulation symbols includes K×N Modulation symbols;

    And a third acquiring unit, configured to acquire the uplink control information that is carried in the first group of modulation symbols and the second group of modulation symbols.
24. The access network device according to claim 23, wherein the third acquiring unit is specifically configured to demodulate the first group of modulation symbols and the second group of modulation symbols respectively to obtain a demodulated Encoded bitstream; decoding the encoded bitstream to obtain the uplink control information.
25. The access network device according to claim 23 or 24, wherein the uplink control information is transmitted by using a first time-frequency resource, and other uplink control information of the current cell is transmitted by using a second time-frequency resource. The number of RBs included in the first time-frequency resource is greater than the number of RBs included in the second time-frequency resource, and the first time-frequency resource and the second time-frequency resource partially overlap.
26. An access network device according to any of claims 23-25, wherein said said The access network device configures the first downlink subframe set or the second downlink subframe set for the user equipment, where the number of subframes included in the first downlink subframe set is greater than the second downlink subframe set. When the access network device receives the uplink control information corresponding to the first downlink subframe set in the uplink subframe, the number of RBs occupied by each time slot is greater than the number of subframes included in the uplink subframe. The number of RBs occupied by each time slot when the access network device receives the uplink control information corresponding to the second downlink subframe set in the uplink subframe.
27. The access network device according to any one of claims 23 to 26, wherein the access network device configures a first downlink subframe set for the user equipment, where the first downlink is The set of subframes includes a first subset and a second subset, the first subset is a true subset of the second subset, and the access network device receives the first sub-subframe in the uplink subframe The number of RBs occupied by each time slot is smaller than the number of RBs that the access network device transmits in the uplink subframe in the downlink subframe of the second subset. The number of RBs occupied by each time slot when the control information is uplinked.
28. The access network device according to any one of claims 23-27, wherein the demodulation reference signal DMRS sequence in one time domain symbol of the uplink subframe comprises a sequence of K segments generated based on the length N.

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