CN116235585A

CN116235585A - Signal transmitting method, signal receiving method, communication device and storage medium

Info

Publication number: CN116235585A
Application number: CN202080105362.0A
Authority: CN
Inventors: 曲秉玉; 李博; 龚名新
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2023-06-06
Also published as: WO2022067811A1

Abstract

The embodiment of the application provides a signal sending method, a signal receiving method, a communication device and a storage medium, comprising the following steps: the method comprises the steps that a sending end receives/sends signaling, and the signaling indicates a first reference signal combination; the transmitting end transmits the at least one first reference signal; the reference signal set comprises at least two reference signal groups, and reference signal sequences of reference signals in the at least two reference signal groups are respectively: (I); the sequences in the first orthogonal sequence group/the second orthogonal sequence group are mutually orthogonal, and any sequence in the first orthogonal sequence group is different from any sequence in the second orthogonal sequence group; the mask sequence corresponding to the first orthogonal sequence set is different from the mask sequence corresponding to the second orthogonal sequence set. By adopting the scheme, the interference of pilot signals between different layers can be reduced, and the channel estimation performance can be improved.

The method meets the following conditions:

Description

Signal transmitting method, signal receiving method, communication device and storage medium

Technical Field

the present invention relates to the field of communications technologies, and in particular, to a signal transmitting method, a signal receiving method, a communication device, and a storage medium.

Background

In the existing mobile communication system, the maximum multiplexing number of orthogonal demodulation reference signals (demodulation reference signal, DMRS) supported by the system is limited. Taking a New air interface (New RAT, NR) wireless access technology as an example, when uplink or downlink communication adopts an orthogonal frequency division multiplexing (cyclic prefixed orthogonal frequency division multiplexing, CP-OFDM) waveform based on a cyclic prefix, the CP-OFDM waveform can support two DMRS configurations, namely, configuration type 1 (configuration type 1) and configuration type 2 (configuration type 2). Under configuration type 1 (configuration type 1), the system supports 8 orthogonal DMRS multiplexing at maximum; in configuration type 2 (configuration type 2), the system supports a maximum of 12 orthogonal DMRS multiplexes.

With the development of mobile communication and the advent of emerging services, the demand for high rates is increasing. Increasing the number of transmission layers for multi-user pairing is beneficial to improving the throughput of the system. Therefore, when the number of layers transmitted by one cell is relatively large, more DMRSs need to be supported. In the prior art, different scrambling codes are used, and non-orthogonal DMRS is introduced so as to achieve the purpose of expanding the number of the DMRS. For example, using two scrambling codes, type 1 can be extended to 16 DMRS at maximum, and type 2 can be extended to 24 DMRS at maximum. In the prior art, the scrambling code of the DMRS is a Gold sequence, and under the OFDM waveform, although the complete Gold sequence has good cross-correlation properties, since the DMRS uses fragments of Gold sequences, the cross-correlation of sequences of non-orthogonal DMRS is relatively large, and the cross-correlation is large, which causes relatively large interference among the non-orthogonal DMRS and seriously affects the channel estimation performance.

Therefore, how to reduce interference between non-orthogonal DMRSs based on the introduction of non-orthogonal DMRSs is a problem that needs to be solved at present.

Disclosure of Invention

The application discloses a signal transmitting method, a signal receiving method, a communication device and a storage medium, which can improve channel estimation performance.

In a first aspect, the present application provides a signal transmission method, including: a transmitting end receives/transmits a signaling, wherein the signaling carries a preset domain segment and indicates a first reference signal combination, and the first reference signal combination comprises one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to a plurality of reference signal combinations; all reference signals included in the plurality of reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

The method meets the following conditions:

wherein m=0, 1, …, M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence; wherein the sequence w _g,p Length of (-) is N _g The independent variable has the value range of 0,1, … and N _g -1.N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, the at least two reference signal groups satisfying the following conditionPiece (2): reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed

Corresponding orthogonal sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different; wherein,

sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the range of self-variable values is

Wherein,

other forms are also possible, e.g

Etc. The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; sequences r (m) and r (m) corresponding to the first sequence groupSequences r (m) corresponding to the second sequence group are identical; the transmitting end generates and transmits the one or more reference signals.

Through the embodiment of the application, the sending end is based on the sequence

Generating a reference signal, wherein the sequence

Corresponding orthogonal sequence w _g,p (. Cndot.) is a sequence in at least a first orthogonal sequence group or a second orthogonal sequence group, the sequences in the first orthogonal sequence group being orthogonal to each other, the sequences in the second orthogonal sequence group being orthogonal to each other, while any one of the first orthogonal sequence group and any one of the second orthogonal sequence group are different; and, the sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequence c corresponding to the second orthogonal sequence set _g (. Cndot.) is different. In contrast to the prior art, the cross-correlation value between the sequences of the one or more reference signals and the sequences of the reference signals allocated for other terminal devices that are not orthogonal thereto is independent of the scrambling sequence r (m), avoiding the situation that the cross-correlation is poor due to the randomness of the scrambling code, but only with the sequence w _g,p (·)、c _g (. Cndot.) correlation. Therefore, when the signal transmission method provided by the scheme is adopted for multi-layer transmission, the interference of pilot signals between different layers can be reduced, and the channel estimation performance can be improved.

Wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

E corresponding to the plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.

The length of the sequence corresponding to the first orthogonal sequence group is the same as the length of the sequence corresponding to the second orthogonal sequence group.

When the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped on the same subcarrier in the same resource block.

As one implementation, the sequences of the first orthogonal sequence set include the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; wherein i is an imaginary unit, 1i represents i, -1i represents-i, and the description thereof is omitted. The communication system also has a unit in which j represents an imaginary number.

As another implementation, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; {1,1i, -1i }; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1i, -1i, -1}; {1,1i, -1i,1}; {1, -1i,1}; {1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i,1i }; {1,1i,1, -1i }; where i is an imaginary unit.

As yet another implementation, the sequences of the first orthogonal sequence set/second orthogonal sequence set include the following sequences:

{ -1i, -1,1i,1}; { -1i,1i, -1}; { -1i, -1, -1i,1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}; { -1i,1, -1i, -1i,1}; { -1i, -1i,1i,1}; { -1i,1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1i, -1,1i, -1,1}; {1i, -1,1i, -1, -1}; {1i, -1i,1i,1, -1}; {1i,1, -1,1i, -1i,1}; {1i, -1i, -1, -1, -1i,1, -1}; {1i, -1, -1i,1}; {1i, -1i,1, -1i, -1,1}; {1i,1, -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1, -1, -1,1}; {1i, -1i, -1, -1, -1}; {1i, -1i, -1, -1}; {1i, -1i, -1,1}; {1i, -1i,1, -1}; {1i, -1i,1, -1,1}; {1i, -1i,1, -1,1}; {1i, -1i, -1i, -1i,1, -1, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1i, -1,1i, -1}; { -1, -1i,1i,1}; { -1,1i, -1i,1i, -1}; { -1, -1i, -1, -1i, -1,1i,1}; { -1,1i,1, -1i,1}; { -1, -1i,1i, -1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1,1i, -1i,1}; {1i,1, -1, -1i, -1,1i, -1}; {1i, -1, -1i, -1, -1i, -1i, -1}; {1i,1i, -1i,1}; {1i, -1, -1, -1,1i, -1}; {1i,1, -1i,1, -1i,1}; {1i, -1, -1i,1i,1}; {1i,1i,1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1,1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1,1i, -1}; { -1, -1i, -1, -1i,1}; { -1,1i, -1i, -1, -1i, -1i, -1}; { -1, -1i,1i, -1i,1}; { -1,1i,1, -1i,1}; { -1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i,1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i,1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1,1,1,1,1,1,1,1}; {1, -1, -1}; {1, -1, -1, -1}; {1, -1, -1,1}; {1, -1, -1, -1}; {1, -1,1}; {1, -1, -1, -1,1}; {1, -1, -1}; where i is an imaginary unit.

Wherein the local sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (n) correlation, wherein w _g,p Cross-correlation values between (n) are all

The cross-correlation is optimal. The local cross correlation of the reference signals can be optimally used for effectively resisting channel fading, and the channel estimation performance is improved.

Alternatively, the length of the sequence corresponding to the first orthogonal sequence group is 2 times that of the sequence corresponding to the second orthogonal sequence group.

When the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequence corresponding to the sequence of the first orthogonal sequence group is mapped to a first subcarrier with medium interval in the same resource block, the center frequency distance of the adjacent subcarrier in the first subcarrier is k subcarriers, the reference signal sequence corresponding to the sequence of the second orthogonal sequence group is mapped to a second subcarrier with medium interval in the same resource block, the center frequency distance of the adjacent subcarrier in the second subcarrier is 2k subcarriers, and k is a positive integer.

Wherein the sequences of the first orthogonal sequence set include the following sequences: {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; {1,1i, -1i }; alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1, -1i, -1i, -1}; {1,1i, -1i,1}; {1, -1i,1}; {1,1i, -1}; wherein the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; where i is an imaginary unit.

As another implementation, the sequences of the first orthogonal sequence set include the following sequences: { -1i, -1,1i,1}; { -1i,1i, -1}; { -1i, -1, -1i,1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}; { -1i,1, -1i, -1i,1}; { -1i, -1i,1i,1}; { -1i,1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence set include the following sequences: { -1,1i, -1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1i, -1,1i, -1}; { -1, -1i,1i,1}; { -1,1i, -1i,1i, -1}; { -1, -1i, -1, -1i, -1,1i,1}; { -1,1i,1, -1i,1}; { -1, -1i,1i, -1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence set include the following sequences: { -1,1i, -1,1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1,1i, -1}; { -1, -1i, -1, -1i,1}; { -1,1i, -1i, -1, -1i, -1i, -1}; { -1, -1i,1i, -1i,1}; { -1,1i,1, -1i,1}; { -1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence set include the following sequences: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i,1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i,1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1, 1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

Wherein the local sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (n) correlation, wherein w _g,p Cross-correlation values between (-) are all

Wherein the sequences in the second set of mask sequences include the following sequences: {1,1}; {1,1i }; where i is an imaginary unit.

Mask sequence c _g (. Cndot.) sequences of reference signals between groups of reference signal sequences

Cross-correlation of

The method can ensure that the overall cross correlation of the reference signals is optimal, can effectively resist channel fading, and can further improve the channel estimation performance.

In a second aspect, embodiments of the present application further provide a signal receiving method, including: the method comprises the steps that a receiving end sends/receives a signaling, wherein the signaling carries a preset domain segment and indicates a first reference signal combination, and the first reference signal combination comprises one or more reference signals; wherein, different values of the preset domain segment in the signaling respectively correspond toDifferent reference signal combinations; all reference signals included in the different reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

Satisfy the following requirements

Wherein M is an integer from 0 to M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence; wherein the sequence w _g,p Length of (-) is N _g The independent variable has the value range of 0,1, … and N _g -1; n satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal code sequence w _g,p (n) forming a first orthogonal sequence group, reference signal sequences of all reference signals in a second reference signal group

Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; the sequences in the first orthogonal sequence group are orthogonal to each other, and the sequences in the second orthogonal sequence groupMutually orthogonal, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence are different; wherein,

The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group; the receiving end receives the one or more reference signals and processes the one or more reference signals according to at least one reference signal sequence.

By the embodiment of the application, the receiving end receives the sequence-based sent by the sending end

A generated reference signal, wherein the sequence

Corresponding orthogonal sequence w _g,p (. Cndot.) is a sequence in at least a first orthogonal sequence group or a second orthogonal sequence group, the sequences in the first orthogonal sequence group being orthogonal to each other, the sequences in the second orthogonal sequence group being orthogonal to each other, while any one of the first orthogonal sequence group and any one of the second orthogonal sequence group are different; and, the sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequence c corresponding to the second orthogonal sequence set _g (. Cndot.) is different. In contrast to the prior art, the sequence of the one or more reference signals is allocated non-orthogonal to other terminal devicesThe cross-correlation value between the sequences of the reference signal of (2) is independent of the scrambling sequence, avoiding the situation of poor cross-correlation due to the randomness of the scrambling code, but is only related to the sequence w _g,p (·)、c _g (. Cndot.) correlation. By adopting the scheme, the interference of pilot signals among different layers can be reduced, and the channel estimation performance can be improved.

Wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

As one implementation, the sequences of the first orthogonal sequence set include the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; where i is an imaginary unit.

As another implementation, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, 1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; {1,1i, -1i }; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1i, -1i, -1}; {1,1i, -1i,1}; {1, -1i,1}; {1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i,1i }; {1,1i,1, -1i }; where i is an imaginary unit.

As yet another implementation, the sequences of the first orthogonal sequence set/second orthogonal sequence set include the following sequences: { -1i, -1,1i,1}; { -1i,1i, -1}; { -1i, -1, -1i,1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}; { -1i,1, -1i, -1i,1}; { -1i, -1i,1i,1}; { -1i,1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1i, -1,1i, -1,1}; {1i, -1,1i, -1, -1}; {1i, -1i,1i,1, -1}; {1i,1, -1,1i, -1i,1}; {1i, -1i, -1, -1, -1i,1, -1}; {1i, -1,1, -1i,1}; {1i, -1i,1, -1i, -1,1}; {1i,1, -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1, -1, -1,1}; {1i, -1i, -1, -1, -1}; {1i, -1i, -1, -1}; {1i, -1i, -1,1}; {1i, -1i,1, -1}; {1i, -1i,1, -1,1}; {1i, -1i,1, -1,1}; {1i, -1i, -1i, -1i,1, -1, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1i, -1,1i, -1}; { -1, -1i,1i,1}; { -1,1i, -1i,1i, -1}; { -1, -1i, -1, -1i, -1,1i,1}; { -1,1i,1, -1i,1}; { -1, -1i,1i, -1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1,1i, -1i,1}; {1i,1, -1, -1i, -1,1i, -1}; {1i, -1, -1i, -1, -1i, -1i, -1}; {1i,1i, -1i,1}; {1i, -1, -1, -1,1i, -1}; {1i,1, -1i,1, -1i,1}; {1i, -1, -1i,1i,1}; {1i,1i,1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1,1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1,1i, -1}; { -1, -1i, -1, -1i,1}; { -1,1i, -1i, -1, -1i, -1i, -1}; { -1, -1i,1i, -1i,1}; { -1,1i,1, -1i,1}; { -1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i,1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i,1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1,1,1,1,1,1,1,1}; {1, -1, -1}; {1, -1, -1, -1}; {1, -1, -1,1}; {1, -1, -1, -1}; {1, -1,1}; {1, -1, -1, -1,1}; {1, -1, -1}; where i is an imaginary unit.

Wherein the mask sequence c _g (t) sequences of reference signals between groups of reference signal sequences

Cross-correlation of

In a third aspect, the present application also provides a communication apparatus, including: a transceiver unit, configured to receive/send a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to different reference signal combinations respectively; all reference signals included in the different reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

Satisfy the following requirements

Wherein M is an integer from 0 to M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence; wherein the sequence w _g,p Length of (-) is N _g The independent variable has the value range of 0,1, … and N _g -1.N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal code sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed

Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different; wherein,

The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group; and a processing unit, configured to generate and send the one or more reference signals.

Wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

As yet another implementation, the sequences of the first orthogonal sequence set/second orthogonal sequence set include the following sequences: { -1i, -1,1i,1}; { -1i,1i, -1}; { -1i, -1, -1i,1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}; { -1i,1, -1i, -1i,1}; { -1i, -1i,1i,1}; { -1i,1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1i, -1,1i, -1,1}; {1i, -1,1i, -1, -1}; {1i, -1i,1i,1, -1}; {1i,1, -1,1i, -1i,1}; {1i, -1i, -1, -1, -1i,1, -1}; {1i, -1, -1i,1}; {1i, -1i,1, -1i, -1,1}; {1i,1, -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1, -1, -1,1}; {1i, -1i, -1, -1, -1}; {1i, -1i, -1, -1}; {1i, -1i, -1,1}; {1i, -1i,1, -1}; {1i, -1i,1, -1,1}; {1i, -1i,1, -1,1}; {1i, -1i, -1i, -1i,1, -1, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1i, -1,1i, -1}; { -1, -1i,1i,1}; { -1,1i, -1i,1i, -1}; { -1, -1i, -1, -1i, -1,1i,1}; { -1,1i,1, -1i,1}; { -1, -1i,1i, -1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1i, -1,1i, -1i,1}; {1i,1, -1, -1i, -1,1i, -1}; {1i, -1, -1i, -1, -1i, -1i, -1}; {1i,1i, -1i,1}; {1i, -1, -1, -1,1i, -1}; {1i,1, -1i,1, -1i,1}; {1i, -1, -1i,1i,1}; {1i,1i,1, -1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1,1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1,1i, -1}; { -1, -1i, -1, -1i,1}; { -1,1i, -1i, -1, -1i, -1i, -1}; { -1, -1i,1i, -1i,1}; { -1,1i,1, -1i,1}; { -1, -1i, -1,1i, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i,1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i,1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}; alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences: {1,1,1,1,1,1,1,1}; {1, -1, -1}; {1, -1, -1, -1}; {1, -1, -1,1}; {1, -1, -1, -1}; {1, -1,1}; {1, -1, -1, -1,1}; {1, -1, -1}; where i is an imaginary unit.

In a fourth aspect, the present application also provides a communication device,comprising the following steps: a transceiver unit, configured to send/receive a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to different reference signal combinations respectively; all reference signals included in the different reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

Satisfy the following requirements

Wherein M is an integer from 0 to M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence; wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; by a means ofG traversing at least the first orthogonal sequence group and the second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different; wherein,

The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group; and the processing unit is used for receiving the one or more reference signals and processing the one or more reference signals according to at least one reference signal sequence.

Wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

Representation e _g Alpha times Cronecker product of (C), said alpha satisfying

E corresponding to the plurality of reference signal sequences _g Forming a second set of mask sequences, wherein L is positive integerA number.

In a fifth aspect, the present application provides a computer storage medium comprising computer instructions which, when run on an electronic device, cause the electronic device to perform a method as provided by any one of the possible implementations of the first aspect and/or any one of the possible implementations of the second aspect.

In a sixth aspect, the present examples provide a computer program product which, when run on a computer, causes the computer to perform the method as provided by any one of the possible implementations of the first aspect and/or any one of the possible implementations of the second aspect.

It will be appreciated that the apparatus of the third aspect, the apparatus of the fourth aspect, the computer storage medium of the fifth aspect or the computer program product of the sixth aspect provided above are each adapted to perform the method provided in any one of the first aspect and the method provided in any one of the second aspect. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will briefly describe the drawings related to the embodiments or the background of the present application.

FIG. 1 is a schematic diagram of a prior art resource block;

fig. 2a is a schematic diagram of a pilot pattern of a DMRS employing configuration type 1 in the prior art;

fig. 2b is a schematic diagram of another pilot pattern employing DMRS of configuration type 1 in the prior art;

fig. 3a is a schematic diagram of a pilot pattern of a DMRS employing configuration type 2 in the prior art;

fig. 3b is a schematic diagram of another pilot pattern employing a DMRS of configuration type 2 in the prior art;

fig. 4 is a cumulative distribution diagram of cross-correlation between DMRS sequences in the prior art;

FIG. 5a is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 5b is a schematic flow chart of a signal sending method according to an embodiment of the present application;

fig. 5c is a flowchart of another signaling method according to an embodiment of the present application;

fig. 6a is a schematic diagram of mapping a reference signal sequence to a time-frequency resource according to an embodiment of the present application;

fig. 6b is a schematic diagram of mapping another reference signal sequence to a time-frequency resource according to an embodiment of the present application;

Fig. 7a is a schematic diagram of orthogonal code sequence placement according to an embodiment of the present application;

fig. 7b is another schematic diagram of orthogonal code sequence placement provided in an embodiment of the present application;

FIG. 8 is a mask sequence placement schematic diagram provided in an embodiment of the present application;

FIG. 9 is a partial sequence diagram provided in an embodiment of the present application;

fig. 10a is a schematic diagram of orthogonal code sequence placement according to an embodiment of the present application;

fig. 10b is another schematic diagram of orthogonal code sequence placement provided in an embodiment of the present application;

FIG. 11a is a schematic diagram of mask sequence placement according to an embodiment of the present application;

FIG. 11b is another mask sequence placement schematic provided by an embodiment of the present application;

fig. 12 is a schematic diagram of orthogonal code sequence placement according to an embodiment of the present application;

FIG. 13 is a mask sequence placement schematic diagram provided in an embodiment of the present application;

fig. 14 is a schematic diagram of mapping a reference signal sequence to a time-frequency resource according to an embodiment of the present application;

fig. 15 is a schematic view of a scenario of a signaling method provided in an embodiment of the present application;

fig. 16a is a schematic flow chart of a signal receiving method according to an embodiment of the present application;

FIG. 16b is a schematic diagram of a communication device according to an embodiment of the present application;

Fig. 17 is a schematic diagram of another communication device according to an embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

The following describes the related art according to the embodiments of the present application:

1. resource BLOCK (RB)

According to rule 91, correction 21.10.2020, in the radio resource, the smallest resource granularity in the time domain may be one orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol (symbol), which may be simply referred to as symbol (symbol), and one slot includes a plurality of symbols; in the frequency domain, the smallest resource granularity may be one subcarrier. One OFDM symbol and one subcarrier constitute one Resource Element (RE). The physical layer uses RE as a basic unit when performing resource mapping. An RB is a frequency domain basic scheduling unit of data channel allocation, and one RB includes 12 subcarriers in the frequency domain, as shown in fig. 1.

2. Demodulation reference signal (demodulation reference signal, DMRS)

Currently, in a communication system, DMRS is used for uplink/downlink channel estimation. For example, a physical downlink shared channel (physical downlink shared channel, PDSCH) or a physical uplink shared channel (physical uplink shared channel, PUSCH) may be channel estimated using the DMRS to coherently demodulate uplink/downlink data. The PDSCH and PUSCH are used for carrying downlink and uplink data, and the DMRS is transmitted along with the PDSCH or PUSCH. Typically the DMRS is located in the first few symbols of the slot occupied by the PDSCH or PUSCH.

In the uplink and downlink transmission process, a certain number of parallel data streams are distributed for each scheduled UE according to factors such as channel conditions of each User Equipment (UE), wherein each data stream is called a layer of transmission. Taking a 5G New Radio (NR) system as an example, downlink single user multiple input multiple output (SU-MIMO) supports 8 layers of transmission at most; uplink SU-MIMO supports up to 4 layers of transmission. Uplink and downlink multi-user multiple-input multiple-output (MU-MIMO) supports up to 12 layers of transmission. Wherein, each layer of transmission can respectively correspond to one DMRS.

The precoding vector of each DMRS is the same as the precoding vector of the data stream of the corresponding layer, and the receiving end needs to perform channel estimation according to each DMRS. Wherein different DMRSs correspond to different indexes, the indexes here may be DMRS port numbers.

When the uplink and downlink communications employ a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform, the DMRS may be generated using a pseudo-random sequence. Specifically, the scrambling sequence r (m) of the DMRS may be modulated by a sequence c (m) through quadrature phase shift keying (quadrature phase shift keying, QPSK), and c (m) may be defined as a Gold sequence, which is one of pseudo-random sequences. r (m) can be expressed as:

wherein,

c(m)＝(x ₁ (m+N _C )+x ₂ (m+N _C ))mod 2

x ₁ (m+31)＝(x ₁ (m+3)+x ₁ (m))mod 2

x ₂ (m+31)＝(x ₂ (m+3)+x ₂ (m+2)+x ₂ (m+1)+x ₂ (m))mod 2

wherein N is _C ＝1600，x ₁ (m) can be initialized to x ₁ (0)＝1,x ₁ (m)＝0,m＝1,2,...,30，x ₂ (m) satisfy

Taking PUSCH DMRS as an example, c _init Is identified (Identity document, ID) by a DMRS scrambling code,Information such as cell ID, subframe position and symbol position of DMRS is determined.

In the multi-layer transmission, each layer multiplexes the same time-frequency resource, and each DMRS shares the same scrambling sequence r (m). In addition, in order to ensure orthogonality between the transmissions of the layers, orthogonal codes (orthogonal cover code, OCC) corresponding to the transmissions of the layers need to be superimposed on the scrambling code sequence.

Specifically, in the case of multiplexing the same time-frequency resource with multiple layers of transmission, different DMRSs are divided into different code division multiplexing (code division multiplexing, CDM) groups (groups) in the frequency domain according to the configuration type adopted by the DMRSs. For example, two DMRS configuration types, configuration type 1 and configuration type 2, may be supported in the NR. The DMRS in the same CDM group are spread on the time-frequency domain by using orthogonal codes, orthogonality of different DMRS is guaranteed, and the DMRS are mutually orthogonal by adopting a frequency division mode among different CDM groups.

Taking PUSCH DMRS using CP-OFDM waveforms as an example, fig. 2a and 2b are schematic diagrams of pilot patterns using DMRS of configuration type 1 according to rule 91 and rule 21.10.2020. When one symbol is configured for DMRS, resource Elements (REs) of two patterns in fig. 2a represent REs occupied by CDM group 0 and CDM group 1, and p0, p1, p2, and p3 represent DMRS port numbers, respectively. Wherein, within the same CDM group, an orthogonal code is adopted to ensure that two DMRS within the same CDM group are orthogonal. And a frequency division mode is adopted among different CDM groups to ensure that the DMRS among the different CDM groups are mutually orthogonal. When the DMRS configuration adopts type 1 and the DMRS configuration is one symbol, the system supports a maximum of 4 DMRS orthogonality.

[ according to rules 91, correction 21.10.2020] when two symbols are configured for DMRS, REs of two patterns in fig. 2b represent REs occupied by CDM group 0 and CDM group 1, p0, p1, respectively, and p6, p7 represent DMRS port numbers, respectively. Wherein, within the same CDM group, an orthogonal code is adopted to ensure that 4 DMRS within the same CDM group are orthogonal. When the DMRS configuration adopts type 1 and the DMRS configuration is two symbols, the system supports 8 DMRS orthogonality at maximum.

As another example, fig. 3a and 3b are diagrams illustrating pilot patterns using DMRS of configuration type 2 according to rule 91 to correct 21.10.2020. Wherein, when configuring one symbol for DMRS, REs of three patterns in fig. 3a represent REs occupied by three CDM groups, p0, p1, p2, respectively,..p4, p5 represent DMRS port numbers, respectively. In the same CDM group, an orthogonal code with a code length of 2 is adopted to ensure that two DMRS in the same CDM group are orthogonal. When type 2 is employed and DMRS configures one symbol, the system supports a maximum of 6 DMRSs orthogonality.

[ according to rule 91, correction 21.10.2020] when two symbols are configured for DMRS, REs of three patterns in fig. 3b represent REs occupied by three CDM groups, p0, p1, p2, respectively, and..p10, p11 represent DMRS port numbers, respectively. In the same CDM group, four DMRS orthogonality in the same CDM group is ensured by adopting an orthogonal code with a code length of 4. It can be seen that when type 2 is employed and the DMRS configures two symbols, the system supports a maximum of 12 DMRSs orthogonality.

In addition, in uplink or downlink transmission, the base station needs to instruct the UE of DMRS allocation through downlink control information (Downlink Control Information, DCI) in a physical downlink control channel (Physical Downlink Control Channel, PDCCH). In some cases, in order to support the joint reception algorithm in MU-MIMO to better suppress interference, it is necessary to indicate not only the DMRS allocation of each scheduled UE itself, but also the DMRS allocation of the UE co-scheduled therewith in DCI.

Currently, with the development of mobile communication, it is required to increase system performance by increasing the number of transmission layers of network pairing. As can be seen from the description of the related art, the number of transmission layers of the network pairing is limited by the number of orthogonal DMRS that is maximally supported by the system.

In order to avoid limitation of the number of transmission layers of network pairing by the number of orthogonal DMRS supported by the system at maximum, the prior art generally adopts a method of using multiple scrambling sequences to achieve the purpose of expanding the number of DMRS, taking CDM group 0 in the pilot pattern of fig. 2b as an example, the scrambling sequences of DMRS of ports p0, p1, p4, and p5 are the same, and are assumed to be r ₀ (m) introducing another scrambling code r ₁ (m) the DMRS of ports p0', p1', p4', p5' are extended after OCC is superimposed. Ports p0, p1, due to the use of different scrambling codes, The DMRSs of p4, p5 and the DMRSs of ports p0', p1', p4', p5' are not orthogonal to each other.

FIG. 4 is a random selection of 2000 scrambling sequences r according to the scrambling code generation formula of Release15/16 (r 15/16 for short) protocol ₀ (m)-r ₁₉₉₉ (m) cumulative distribution diagram (Cumulative Distribution Function, CDF) of cross-correlation between 48-length DMRS sequences obtained by respectively superimposing 4-length OCCs, wherein each scrambling code is superimposed with 4 OCCs to obtain 4 orthogonal DMRS sequences, the DMRS sequences obtained by different scrambling codes are not orthogonal, and the maximum cross-correlation value between the DMRS sequences obtained by two different scrambling codes is used as the statistical result in FIG. 4, wherein two N-length non-orthogonal sequences { a } _n }、{b _n The cross-correlation value of is defined as

Wherein, the scrambling code initialization formula is as follows:

wherein the method comprises the steps of

As the number of symbols in a time slot,

for a subframe index, l is a symbol index,

is the scrambling code ID. Initializing formula c according to scrambling code _init It can be seen that different scrambling code generation depends not only on scrambling code ID but also on symbol position, so scrambling code selection randomness is great, resulting in variation of the resulting cross-correlation valueThe range is large, and the larger cross-correlation value can cause larger interference ratio between non-orthogonal DMRS, thereby seriously affecting the channel estimation performance.

Therefore, the present solution provides a signal transmission method to solve the above-mentioned problems.

Referring to fig. 5a, a schematic diagram of a communication system according to an embodiment of the present application is provided. The communication system may comprise one or more network devices 10 (only 1 is shown) and one or more terminal devices UE connected to the network devices 10.

The network device 10 may be a device capable of communicating with a terminal device. The network device 10 may be any device having a wireless transceiving function. Including but not limited to: base stations NodeB, evolved base stations eNodeB, base stations in a fifth generation (the fifth generation, 5G) communication system, base stations or network equipment in a future communication system, access nodes in a WiFi system, wireless relay nodes, wireless backhaul nodes, etc. The network device 10 may also be a wireless controller in the context of a cloud wireless access network (cloud radio access network, CRAN). The network device 10 may also be a small station, a transmission reference node (transmission reference point, TRP), or the like. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.

The terminal equipment is equipment with a wireless receiving and transmitting function, can be deployed on land, and comprises indoor or outdoor, handheld, wearable or vehicle-mounted; the device can also be deployed on the water surface, such as a ship, etc.; but also can be deployed in the air, such as on an airplane, a balloon, a satellite, etc. The terminal device may be a mobile phone (mobile phone), a tablet (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), etc. The embodiments of the present application are not limited to application scenarios. A terminal device may also be referred to as a terminal device (UE), an access terminal device, a UE unit, a mobile station, a remote terminal device, a mobile device, a terminal (terminal), a wireless communication device, a UE agent, a UE apparatus, or the like.

The technical scheme provided by the embodiment of the application can be applied to various communication systems, such as communication systems adopting NR technology, long term evolution (long term evolution, LTE) technology or other wireless access technologies.

It should be noted that the terms "system" and "network" in embodiments of the present invention may be used interchangeably. "plurality" means two or more, and "plurality" may also be understood as "at least two" in this embodiment of the present invention. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

The present application is applicable to both upstream (terminal device to network device) and downstream (network device to terminal device) communications in a communication system.

Referring to fig. 5b, a flowchart of a signal sending method according to an embodiment of the present application is shown. The method may include steps 501-503, specifically as follows:

501. the network device sends a first instruction.

The network device may be an access network device, or the network device may be a network element in the core network capable of performing information interaction with the terminal device.

Wherein the first signaling includes a preset field segment indicating a first reference signal combination. The first reference signal combination includes at least one reference signal.

The values of the preset domain segments included in the first signaling are different and correspond to the reference signal combinations respectively. That is, in the case that different values are assigned to the preset domain segments included in the first signaling, the first signaling may correspond to different reference signal combinations. Furthermore, the network device may send a first signaling with different values of the preset domain segment, and instruct the receiving end device of different reference signal combinations.

Specifically, the first signaling may be downlink control information (downlink control information, DCI). Each reference signal combination may be a combination of DMRS.

All reference signals included in the different reference signal combinations described above constitute a reference signal set (for convenience of distinguishing the reference signal set from other reference signal sets, the reference signal set will be hereinafter referred to as "first reference signal set"). For example, the different reference signal combinations described above include combination 1, combination 2, and combination 3. Wherein, the combination 1 comprises a reference signal a and a reference signal b; the combination 2 comprises a reference signal c, a reference signal d and a reference signal e; the combination 3 includes a reference signal f and a reference signal g. Then, the first reference signal set includes a reference signal a, a reference signal b, a reference signal c, a reference signal d, a reference signal e, a reference signal f, and a reference signal g. In addition, there may be intersections of reference signals in different reference signal combinations. For example, each reference signal combination includes a combination 1 and a combination 2, wherein the combination 1 includes a reference signal h, and the combination 2 includes a reference signal h and a reference signal i. The first reference signal set includes a reference signal h and a reference signal i.

Wherein the first set of reference signals comprises at least two reference signal groups. Reference signal sequences for reference signals in at least two reference signal groups

The method meets the following conditions:

wherein r (m) is a pseudo-random sequence. For example, when the first reference signal set is a DMRS set, r (m) is a scrambling sequence of the DMRS.

Where m=0, 1,2 …. When referring to signal sequence

Where m=0, 1,2 … M-1. Wherein the sequence

The sequence length of (a) may be that the base station informs the terminal device by sending signaling, etc.

A is a non-zero complex constant; in the specific implementation process, a person skilled in the art can give the value of a according to the need. For example, a may refer to a power control factor, and a technician may determine a value of a according to a transmit power of a device transmitting a reference signal. That is, the value of a may not be limited in the embodiments of the present application.

Sequence w _g,p Length of (-) is N _g The independent variable has the value range of 0,1, … and N _g -1, N satisfies n=m mod N _g . The sequence is

The sequence length M of (2) is not less than 2N _g . For example, when the first reference signal set is a DMRS set, an orthogonal code sequence w _g,p (. Cndot.) may be the OCC of each DMRS.

Sequence c _g (. Cndot.) is a sequence of masks,

Sequence c _g (. Cndot.) may be one sequence of the first set of mask sequences, the range of self-variable values being

Sequence c _g Length of (-) is

The lower-order of the representation is rounded,

the representation is rounded up. Hereinafter, the description will not be repeated.

In addition, any two reference signal groups of the at least two reference signal groups, taking the first reference signal group and the second reference signal group as examples, satisfy the following conditions:

reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first sequence group, the second reference signal group

Corresponding orthogonal sequence w _g,p (. Cndot.) constitutes a second set of sequences. g is the identification of an orthogonal sequence group, and the g traverses at least a first orthogonal sequence group and a second orthogonal sequence group; p traverses all sequences in the orthogonal sequence set. The step g of traversing at least the first orthogonal sequence group and the second orthogonal sequence group means that the value range of g at least comprises the first orthogonal sequence group and the second orthogonal sequence group. The above description is given by taking the first orthogonal sequence group and the second orthogonal sequence group as examples, and the present invention is not limited to this, and may further include a third orthogonal sequence group, a fourth orthogonal sequence group, and the like. Correspondingly, the p traverses all sequences in the orthogonal sequence group, that is, the value range of p corresponds to all sequences in the orthogonal sequence group.

The sequences in the first orthogonal sequence group are orthogonal to each other, the sequences in the second orthogonal sequence group are orthogonal to each other, and any one of the sequences in the first orthogonal sequence group and any one of the sequences in the second orthogonal sequence group are different.

The above sequence w _g,p (. Cndot.) is an orthogonal sequence, which is a sequence in the first orthogonal sequence group or the second orthogonal sequence group. Of course, when there are at least 3 of the orthogonal sequences, then the sequence w _g,p The symbol (-) may be a sequence in the third orthogonal sequence group, and the present embodiment will be described by taking the first orthogonal sequence group and the second orthogonal sequence group as examples.

Sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequence c corresponding to the second orthogonal sequence set _g (. Cndot.) is different. Specifically, sequences w of the same orthogonal sequence group _g,p Corresponding to (C) _g (. Cndot.) identical, and corresponding c of different orthogonal sequence sets _g (. Cndot.) is the same.

502. The terminal equipment receives a first instruction.

In an embodiment, when the method provided in the embodiment of the present application is applied to a scenario in which the network device sends an instruction (for example, may be downlink control information (downlink control information, DCI)) to the terminal device, so that the terminal device determines, according to the instruction, a reference signal to be sent (for example, may be a DMRS to be sent), and then the terminal device sends the reference signal to be sent, the method further includes:

503. The terminal device transmits at least one reference signal to cause the network device to receive the at least one reference signal.

After receiving the first instruction, the terminal device can determine at least one reference signal in the first reference signal combination according to the value of the preset domain segment in the first instruction, and then send the at least one reference signal.

Exemplary, the terminal device stores therein the reference signal sequence of each reference signal in the first reference signal set

Corresponding orthogonal code sequence w _g,p Related information of (-). Then, the terminal device may determine the orthogonal code sequence w after determining at least one reference signal according to the first instruction _g,p Orthogonal code sequence w corresponding to at least one reference signal in (-) _g,p (-) and obtaining a reference signal sequence of at least one reference signal for transmitting the at least one reference signal.

Of course, the terminal device may not store the orthogonal code sequences corresponding to the reference signal sequences of the reference signals in the first reference signal set in advance, but may directly generate the orthogonal code sequences corresponding to the at least one reference signal according to the correlation information, for example, the rule of the orthogonal code sequences corresponding to the reference signal sequences of the reference signals in the first reference signal set. The value of the preset segment field in the first instruction indicates the index of the reference signal in the first reference signal set, the terminal device needs to generate a reference signal sequence corresponding to the index according to the correlation rule, and needs to know which reference signal sequence corresponds to the orthogonal code sequence to generate the reference signal sequence. Specifically, the method for obtaining the reference signal sequence of the at least one reference signal by the terminal device may not be limited in this application.

For example, the reference signal sequences of at least one reference signal may be mapped to M REs, respectively, and the first signal may be generated and transmitted.

When the method provided in the embodiment of the present application is applied to a scenario in which the network device sends an instruction (for example, may be downlink control information (downlink control information, DCI)) to the terminal device, so that the terminal device determines, according to the instruction, a reference signal (for example, may be DMRS) to be sent by the network device, and then the terminal device receives the reference signal, as shown in fig. 5c, the method includes steps 501'-503', specifically including:

501', the network device sends a first instruction.

The method meets the following conditions:

Where m=0, 1,2 …. When referring to signal sequence

Where m=0, 1,2 … M-1. Wherein the sequence

Sequence c _g (. Cndot.) is a sequence of masks,

Sequence c _g Length of (-) is

The lower-order of the representation is rounded,

Corresponding orthogonal sequence w _g,p (. Cndot.) constitutes a second set of sequences. g is the identification of an orthogonal sequence group, and the g traverses at least a first orthogonal sequence group and a second orthogonal sequence group; p traverses all sequences in the orthogonal sequence set. The step g of traversing at least the first orthogonal sequence group and the second orthogonal sequence group means that the value range of g at least comprises the first orthogonal sequence group and the second orthogonal sequence group. The above-mentioned first orthogonal onlyThe sequence group and the second orthogonal sequence group are exemplified, which may further include a third orthogonal sequence group, a fourth orthogonal sequence group, etc., which is not particularly limited in this scheme. Correspondingly, the p traverses all sequences in the orthogonal sequence group, that is, the value range of p corresponds to all sequences in the orthogonal sequence group.

502', the terminal device receives the first instruction.

503', the network device transmits at least one reference signal, and the terminal device receives the at least one reference signal.

The network device may store in advance orthogonal code sequences corresponding to the reference signal sequences of the reference signals in the first reference signal set. Then, after determining at least one reference signal to be transmitted, the network device may select an orthogonal code sequence corresponding to the at least one reference signal from the stored orthogonal code sequences, and obtain a reference signal sequence of the at least one reference signal according to the formula one, so as to transmit the at least one reference signal. Specifically, the network device may map the reference signal sequences of at least one reference signal onto M REs, respectively, generate a first signal, and send the first signal.

In addition, after receiving the first instruction, the terminal device can determine at least one reference signal in the first reference signal combination according to the value of the preset domain segment in the first instruction. Further, the terminal device may process a first signal from the network device comprising at least one reference signal to evaluate the channel on which the reference signal is located.

Generating a reference signal, wherein the sequence

Corresponding orthogonal sequence w _g,p (. Cndot.) is a sequence in at least a first orthogonal sequence group or a second orthogonal sequence group, the sequences in the first orthogonal sequence group being orthogonal to each other, the sequences in the second orthogonal sequence group being orthogonal to each other, while any one of the first orthogonal sequence group and any one of the second orthogonal sequence group are different; and, the sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequence c corresponding to the second orthogonal sequence set _g (. Cndot.) is different. In contrast to the prior art, the cross-correlation value between the sequences of the one or more reference signals and the sequences of the reference signals allocated by other terminal devices that are not orthogonal to the sequences is independent of the scrambling sequence, avoiding the situation that the cross-correlation is poor due to the randomness of the scrambling code, but is only related to the sequence w _g,p (·)、c _g (. Cndot.) correlation. Therefore, when the signal transmission method provided by the scheme is adopted for multi-layer transmission, the interference of pilot signals between different layers can be reduced, and the channel estimation performance can be improved.

Reference signal sequences provided in embodiments of the present application are described in detail below.

As a first implementation, the following is in a specific sequence w _g,p (. Cndot.) description. When the length of the sequence corresponding to the first orthogonal sequence group is the same as the length of the sequence corresponding to the second orthogonal sequence group, for example, the sequence length N of the first orthogonal sequence group _g May be 2, comprising the sequence: {1,1}; {1, -1}; sequence length N of the second orthogonal sequence group _g May be 2, comprising the sequence: {1,1i }; {1, -1i }.

The specific sequence obtaining manner in the implementation manner may be:

each orthogonal sequence group obtains all sequences in the orthogonal sequence group according to a base sequence, wherein the base sequence is { x } ₀ ,x ₁ And 2-long Walsh code { w } ₀ ,w ₁ Each term is multiplied to obtain { x }, respectively ₀ w ₀ ,x ₁ w ₁ And can be described as s= { x } ₀ w ₀ ,x ₁ w ₁ (w) ₀ ,w ₁ The } is any one of {1,1}, {1, -1}, and the base sequence is {1,1}, wherein

Each row of which represents a sequence, the latter of which is similar, the following sequence can be obtained by the above formula: {1,1}; {1, -1}.

The base sequence is {1, i }, where

The following sequence can be obtained by the above formula: {1,1i }; {1, -1i }.

That is, a length-2 sequence w _g,p (. Cndot.) may be the sequence {1,1} in the first orthogonal sequence set, or the sequence {1, -1} in the first orthogonal sequence set; it may also be the sequence {1,1i } in the second orthogonal sequence set, or the sequence {1, -1i } in the second orthogonal sequence set.

Alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}.

Two sequences in the first orthogonal sequence group are orthogonal to each other, and two sequences in the second orthogonal sequence group are orthogonal to each other.

For example, in accordance with a reference signal sequence

In the process of generating the reference signals, the first items of the sequences of the reference signals in the at least two reference signal groups are mapped on the same RE, the second items are also mapped on the same RE, and so on.

The manner in which the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped to the time-frequency resource is shown in fig. 6 a. Wherein, the subcarriers are numbered s+0, s+1, s+2, etc., s is any integer,

mapped on the subcarrier s +0,

mapping on subcarrier s+2, only mapping on one resource block RB is shown in fig. 6a, where the mapping manner of other RBs is similar.

As another implementation, the manner in which the reference signal sequence corresponding to the sequence of the first orthogonal sequence group and the reference signal sequence corresponding to the sequence of the second orthogonal sequence group are mapped to the time-frequency resource is shown in fig. 6 b. Wherein,

mapped on the subcarrier s +1,

mapping on subcarrier s+3, only mapping on one resource block RB is shown in fig. 6b, and the mapping manner of other RBs is similar.

Wherein the orthogonal code sequences of the corresponding reference signals in each reference signal group correspond to the same RE, as shown in fig. 7a and 7 b. It should be noted that the placement order of the respective items of the orthogonal code sequences in fig. 7a and 7b is only an exemplary order. In the specific implementation process, different placement sequences can be adopted according to the needs. Wherein w (0) and w (1) shown in FIGS. 7a and 7b may be sequences w in the first orthogonal sequence group _g,p (. Cndot.) w (0) and w (1) may also be sequences w in the second orthogonal sequence set _g,p (. Cndot.) the use of a catalyst. The present embodiment is not particularly limited thereto.

Wherein the mask sequences of the corresponding reference signals in each reference signal group correspond to the positions shown in fig. 8. The mask sequences c (0), c (1) and c (2) shown in fig. 8 may be mask sequences corresponding to the first orthogonal sequence group or mask sequences corresponding to the second orthogonal sequence group. Wherein the mask sequence corresponding to the first orthogonal sequence group is different from the mask sequence corresponding to the second orthogonal sequence group.

Wherein the 2 long partial sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (. Related), the 2-long local sequence refers to the sequence of the reference signal corresponding to any of a plurality of orthogonal codes, such as the local sequence 1 shown in FIG. 9

As another example, partial sequence 2 shown in fig. 9

Etc. Wherein the orthogonal sequence group w _g,p Cross-correlation values between (-) are all

The cross-correlation is optimal. The optimal cross-correlation of sequences is that two N long non-orthogonal sequences { a _n }、{b _n Cross-correlation value of } is

The local cross correlation of the reference signals can be optimally used for effectively resisting channel fading, and the channel estimation performance is improved.

Alternatively, sequence c _g (. Cndot.) can satisfy:

Wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product, alpha satisfying

Wherein e is corresponding to a plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.

e _g Different sequences, e.g. low cross-correlation sequences, can be taken to produce different low cross-correlation c _g (·)。

For example, when L is 2, the sequences in the second set of mask sequences include the following sequences: {1,1}; {1,1i }.

For example, when α is 3, e _g Is {1,1i }, then

When alpha is 3, e _g Is {1,1i }, then

For example, when L is 4, e _g {1,1}; {1, -1, -1}; {1, -1, -1}; one of {1, -1,1}, the other e _g Taking {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; one of {1,1i, -1i }. In general terms, the process of the present invention,

c _init a sequence may not be L in length. When c _init And e _g When different sequences are respectively taken, different c are obtained _g (·)。

Sequence c _g (t) sequences of reference signals between groups of reference signal sequences

Cross-correlation of

I.e. to ensure that the overall cross-correlation of the reference signal is optimal, while for any N _g ·L ^v The cross-correlation of long local sequences is

Is also optimal, wherein v=0, 1,2 … can effectively resist channel fading and can further improve the channel Performance is estimated.

The following is in sequence w _g,p The length of (-) is 4, for example, the sequences of the first orthogonal sequence set/the second orthogonal sequence set include the following sequences:

{1,1，1,1}；{1，-1,1,-1}；{1,1，-1，-1}；{1,-1,-1,1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,-1i，-1,-1i}；{1，1i,-1，1i}；{1,-1i，1，1i}；{1，1i，1,-1i}。

the specific sequence obtaining manner in the implementation manner may be:

each orthogonal sequence group obtains all sequences in the orthogonal sequence group according to a base sequence, wherein the base sequence is { x } ₀ ,x ₁ ,x ₂ ,x ₃ And 4-long Walsh code { w } ₀ ,w ₁ ,w ₂ ,w ₃ Each term is multiplied to obtain { x }, respectively ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ And can be described as s= { x } ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ (w) ₀ ,w ₁ ,w ₂ ,w ₃ Is {1, 1}, {1, -1, -1}, {1, -1, -1,1} with the base sequence {1, 1}, wherein

Each row of which represents a sequence, the latter of which is similar, the following sequence can be obtained by the above formula: {1,1,1,1},{1, -1,1, -1},{1,1, -1, -1},{1, -1, -1,1}.

The base sequence is {1, -1, -1i, -1i }, wherein

The following sequence can be obtained by the above formula: {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; {1, 1i, -1i }.

The base sequence is {1, -1i, -1i, -1}, wherein

The following sequence can be obtained by the above formula: {1, -1i, -1i, -1}; {1,1i, -1i,1}; {1, -1i,1}; {1,1i, -1}.

The base sequence is {1, -1i, -1, -1i }, wherein

The following sequence can be obtained by the above formula: {1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i,1i }; {1,1i,1, -1i }.

That is, the first orthogonal sequence group may be any one of the four sequence groups described above, and the second orthogonal sequence group may be any one of the four sequence groups described above, wherein any one of the first orthogonal sequence group and any one of the second orthogonal sequence group are different.

And the sequences in any one of the four sequence groups are mutually orthogonal.

When the frequency resources of the reference signals in at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped on the same subcarrier in the same resource block.

For example, in accordance with a reference signal sequence

In the process of generating the reference signals, the first item of the sequences of the reference signals in the at least two reference signal groups are mapped on the same RE, the second item is also mapped on the same RE, the third item is also mapped on the same RE, and so on.

Wherein the orthogonal code sequences of the corresponding reference signals in each reference signal group correspond to the same RE, as shown in fig. 10a and 10 b. Wherein w (0), w (1), w (2), w (3) shown in fig. 10a and 10b may be sequences w in the first orthogonal sequence group _g,p (. Cndot.) w (0), w (1), w (2), w (3) may also be sequences w in the second orthogonal sequence set _g,p (. Cndot.) the use of a catalyst. The present embodiment is not particularly limited thereto. Fig. 10a is a schematic diagram of the reference signal occupying one OFDM symbol. Fig. 10b is a schematic diagram when the reference signal occupies two OFDM symbols.

It should be noted that the placement order of the respective items of the orthogonal code sequences in fig. 10a and 10b is only an exemplary order. In the specific implementation process, different placement sequences can be adopted according to the needs.

Wherein the mask sequences of the corresponding reference signals in each reference signal group correspond to the positions shown in fig. 11a, wherein the reference signals occupy one OFDM symbol. As shown in fig. 11b, an example of two OFDM symbols is occupied. The mask sequences c (0), c (1) and c (2) shown in fig. 11b may be mask sequences corresponding to the first orthogonal sequence group or mask sequences corresponding to the second orthogonal sequence group. The mask sequence corresponding to the first orthogonal sequence set is different from the mask sequence corresponding to the second orthogonal sequence set.

Wherein the 4 long partial sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (-) correlation, 4 long local sequences such as

As another example of this, it is possible,

etc. Wherein w is _g,p The cross correlation between the (-) and the (-) is 0.5, the cross correlation is optimal, and the local cross correlation of the reference signal is optimal, so that the channel fading can be effectively resisted, and the channel estimation performance is improved.

Alternatively, sequence c _g (t) may satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product, alpha satisfying

Cross-correlation of

Can ensure that the overall cross correlation of the reference signals is also optimal, and at the same time, arbitrary N _g ·L ^v The cross-correlation of long local sequences is

V=0, 1,2 …, which is also optimal, can effectively resist channel fading and improve channel estimation performance.

The following is in sequence w _g,p The length of (-) is 8. Wherein the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

{1i,-1i,-1，-1,1i，1i，-1,1}；{1i,1i,-1，1,1i，-1i，-1,-1}；{1i,-1i,1，1,1i，1i，1，-1}；{1i,1i,1，-1,1i，-1i，1,1}；{1i,-1i,-1，-1,-1i，-1i，1,-1}；{1i,1i,-1，1,-1i，1i，1,1}；{1i,-1i,1，1,-1i，-1i，-1,1}；{1i,1i,1，-1,-1i，1i，-1,-1}；

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i, -1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

{1i,-1,-1,1i,-1，-1i，1i,1}；{1i,1,-1，-1i,-1，1i，1i，-1}；{1i,-1,1,-1i,-1，-1i，-1i,-1}；{1i,1,1，1i，-1，1i，-1i,1}；{1i,-1,-1,-1,1i,1,1i，-1i,-1}；{1i,1,-1，-1i,1，-1i,-1i,1}；{1i,-1，1，-1i,1，1i,1i,1}；{1i,1，1，1i,1，-1i,1i，-1}；

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

{1,1,1,1,1,1,1,1}；{1,-1,1,-1,1,-1,1,-1}；{1,1,-1,-1,1,1,-1,-1}；{1,-1,-1,1,1,-1,-1,1}；{1,1,1,1,-1,-1,-1,-1}；{1,-1,1,-1,-1,1,-1,1}；{1,1,-1,-1,-1,-1,1,1}；{1,-1,-1,1,-1,1,1,-1}。

the specific sequence obtaining mode in the implementation mode can be as follows:

each orthogonal sequence group obtains all sequences in the orthogonal sequence group according to a base sequence, wherein the base sequence is { x } ₀ ,x ₁ ,x ₂ ,x ₃ ,x ₄ ,x ₅ ,x ₆ ,x ₇ And 8-length Walsh code { w } ₀ ,w ₁ ,w ₂ ,w ₃ ,w ₄ ,w ₅ ,w ₆ ,w ₇ Each term is multiplied to obtain { x }, respectively ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ ,x ₄ w ₄ ,x ₅ w ₅ ,x ₆ w ₆ ,x ₇ w ₇ And can be described as s= { x } ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ ,x ₄ w ₄ ,x ₅ w ₅ ,x ₆ w ₆ ,x ₇ w ₇ (w) ₀ ,w ₁ ,w ₂ ,w ₃ ,w ₄ ,w ₅ ,w ₆ ,w ₇ And {1,1,1,1,1,1,1,1}, 1, -1, -1} {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1}, {1, -1, -1, -1,1}, {1, -1, -1, -1, -1,1}, {1, -1, -1} with a base sequence of { -1i, -1,1i,1}, wherein

In (a) and (b)Each row represents a sequence, the latter representation being similar, the following sequence being obtained by the above formula: { -1i, -1,1i,1}; { -1i,1i, -1}; { -1i, -1, -1i,1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}; { -1i,1, -1i, -1i,1}; { -1i, -1i,1i, 1}; { -1i,1, -1i, -1,1i, -1}.

The base sequence is {1i, -1i, -1,1i, -1,1}, the following sequence can be obtained by the above formula: {1i, -1i, -1,1i, -1,1}; {1i, -1,1i, -1, -1}; {1i, -1i,1i,1, -1}; {1i,1, -1,1i, -1i,1}; {1i, -1i, -1, -1, -1i,1, -1}; {1i, -1, -1i,1}; {1i, -1i,1, -1i, -1,1}; {1i,1, -1, -1i, -1, -1}.

The base sequence is {1i, -1, -1,1}, the following sequence can be obtained by the above formula: {1i, -1, -1, -1,1}; {1i, -1i, -1, -1, -1}; {1i, -1i, -1, -1}; {1i, -1i, -1,1}; {1i, -1i,1, -1}; {1i, -1i,1, -1,1}; {1i, -1i,1, -1,1}; {1i, -1i, -1i, -1i,1, -1, -1, -1}.

The base sequence is { -1,1i, -1i,1}, the following sequence can be obtained by the above formula: { -1,1i, -1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1i, -1,1i, -1}; { -1, -1i,1i,1}; { -1,1i, -1i,1i, -1}; { -1, -1i, -1, -1i, -1,1i,1}; { -1,1i,1, -1i,1}; { -1, -1i,1i, -1, -1i, -1}.

The base sequence is {1i, -1,1i, -1i,1}, the following sequence can be obtained by the above formula: {1i, -1,1i, -1i,1}; {1i,1, -1, -1i, -1,1i, -1}; {1i, -1, -1i, -1, -1i, -1i, -1}; {1i, 1i, -1i,1}; {1i, -1, -1, -1,1i, -1}; {1i,1, -1i,1, -1i,1}; {1i, -1, -1i,1i,1}; {1i, 1i,1, -1i, -1}.

The base sequence is {1, -1i, -1i, -1i,1, -1i, -1i, -1i }, the following sequence can be obtained by the above formula: { -1,1i, -1,1i,1}; { -1, -1i,1, -1i, -1}; { -1,1i,1, -1,1i, -1}; { -1, -1i, -1, -1i,1}; { -1,1i, -1i, -1, -1i, -1i, -1}; { -1, -1i,1i, -1i,1}; { -1,1i,1, -1i,1}; { -1, -1i, -1,1i, -1}.

The base sequence is { -1,1i, -1i, -1,1}, the following sequence can be obtained by the above formula: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i, 1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i, 1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}.

The base sequence is {1,1,1,1,1,1,1,1}, the following sequence can be obtained by the above formula: {1,1,1,1,1,1,1,1}; {1, -1, -1}; {1, -1, -1, -1}; {1, -1, -1,1}; {1, -1, -1, -1}; {1, -1,1}; {1, -1, -1, -1,1}; {1, -1, -1,1, -1,1,1, -1}.

The first orthogonal sequence group may be any one of the eight sequence groups, and the second orthogonal sequence group may be any one of the eight sequence groups, and any one of the first orthogonal sequence group and any one of the second orthogonal sequence group may be different. The sequences in any one of the eight sequence groups are orthogonal to each other.

For example, in accordance with a reference signal sequence

Wherein the orthogonal code sequences of the corresponding reference signals in each reference signal group correspond to the same RE. As shown in fig. 12.

Note that the order of placement of the respective items of the orthogonal code sequences in fig. 12 is only one exemplary order. In the specific implementation process, different placement sequences can be adopted according to the needs.

Wherein the mask sequences of the corresponding reference signals in each reference signal group correspond to the positions shown in fig. 13.

Wherein 8 long partial sequence cross-correlations of sequences of reference signals among the reference signal sequence groups are only correlated with sequence w _g,p (n) correlation, 8 long local sequences such as

Etc. Wherein w is _g,p Cross-correlation between (-) are

The cross correlation is optimal, and the local cross correlation of the reference signals can effectively resist channel fading, so that the channel estimation performance is improved.

Sequence c _g (. Cndot.) sequences of reference signals between groups of reference signal sequences

Cross-correlation of

Can ensure the integral mutual of the reference signalsCorrelation is also optimal, while at the same time arbitrary N _g ·L ^v The cross-correlation of long local sequences is

As another implementation manner, the embodiments of the present application further provide an embodiment in which the lengths of sequences in the first orthogonal sequence group and the second orthogonal sequence group are different. For example, the length of the sequence corresponding to the first orthogonal sequence group is 2 times the length of the sequence corresponding to the second orthogonal sequence group.

As a first implementation, the length of the sequence corresponding to the first orthogonal sequence group is 4, and the length of the sequence corresponding to the second orthogonal sequence group is 2.

Wherein the sequences of the first orthogonal sequence set include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

wherein the sequences of the second orthogonal sequence set include the following sequences:

{1,1}；{1,-1}。

The sequence obtaining manner of the first orthogonal sequence group in the implementation manner may be:

each orthogonal sequence group obtains all sequences in the orthogonal sequence group according to a base sequence, wherein the base sequence is { x } ₀ ,x ₁ ,x ₂ ,x ₃ And 4-long Walsh code { w } ₀ ,w ₁ ,w ₂ ,w ₃ Each term is multiplied to obtain { x }, respectively ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ }, can beDenoted as s= { x ₀ w ₀ ,x ₁ w ₁ ,x ₂ w ₂ ,x ₃ w ₃ (w) ₀ ,w ₁ ,w ₂ ,w ₃ The } is any one of {1,1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1} and the base sequence is {1, -1, -1i, -1i }, wherein

Each row of which represents a sequence, the latter of which is similar, the following sequence can be obtained by the above formula: {1, -1, -1i, -1i }; {1, -1i,1i }; {1, -1,1i }; {1,1i, -1i }.

The base sequence is {1, -1i, -1i, -1}, wherein

The first orthogonal sequence group may be any one of the two first orthogonal sequence groups. The sequences in any one of the first orthogonal sequence groups are mutually orthogonal. The sequences in the second orthogonal sequence group are also orthogonal to each other.

Wherein, when the sequences of the second orthogonal sequence set include {1,1}; {1, -1} the time-frequency resource mapping manner is as shown in fig. 2a in the prior art, 4 orthogonal reference signals can be obtained, wherein, the 4 orthogonal reference signals are all regarded as code division orthogonality, and the orthogonal sequences on 4 continuous subcarriers of the 4 orthogonal reference signals can be regarded as the following sequences:

{1,0，1,0}；{0,1,01}；{1,0，-1,0}；{0,1,0，-1}；

The cross-correlation value between any of the sequences and any of the sequences in the first orthogonal sequence set is 0.5.

When the frequency resources of the reference signals in at least two reference signal groups comprise the same resource block, the reference signal sequence corresponding to the sequence of the first orthogonal sequence group is mapped to a first subcarrier with equal interval in the same resource block, the center frequency distance of the adjacent subcarrier in the first subcarrier is k subcarriers, the reference signal sequence corresponding to the sequence of the second orthogonal sequence group is mapped to a second subcarrier with equal interval in the same resource block, the center frequency distance of the adjacent subcarrier in the second subcarrier is 2k subcarriers, and k is a positive integer.

For example, in accordance with a reference signal sequence

In the process of generating the reference signal, the manner of mapping the reference signal sequence corresponding to the sequence of the first orthogonal sequence group to the time-frequency resource is shown in fig. 14, where the subcarriers are sequentially numbered s+0, s+1, s+2, etc., s is any integer,

mapped on the subcarrier s +0,

mapped on the subcarrier s +1,

mapped on subcarrier s +2 and so on. Wherein the sequences of the first orthogonal sequence group correspond to reference signal sequences such as

And

mapped on two adjacent sub-carriers, whereThe center frequencies of the two adjacent subcarriers are 1 subcarrier apart, and similarly,

and

also mapped on two adjacent subcarriers whose center frequency is also 1 subcarrier apart.

The manner of mapping the reference signal sequences corresponding to the sequences of the second orthogonal sequence group to the time-frequency resource is shown in fig. 2a, wherein the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are as follows

And

mapped on a subcarrier that is separated by two subcarriers, wherein the center frequency of the two subcarriers is 2 subcarriers apart, and similarly,

and

also mapped on subcarriers separated by two subcarriers whose center frequencies are also 2 subcarriers apart.

Wherein the mask sequence of the reference signal corresponding to the sequence of the first orthogonal sequence group corresponds to the position shown in fig. 11 a. In this case, where c (0), c (1), and c (2) shown in fig. 11a are mask sequences corresponding to the first orthogonal sequence group. The mask sequences of the reference signals corresponding to the sequences of the second orthogonal sequence group correspond to the positions shown in fig. 8, in which case c (0), c (1), and c (2) shown in fig. 8 are the mask sequences corresponding to the second orthogonal sequence group. Wherein the mask sequence corresponding to the first orthogonal sequence group is different from the mask sequence corresponding to the second orthogonal sequence group.

Wherein the local sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (. Cndot.) correlation, where w _g,p The cross correlation between the (-) is 0.5, which is optimal, and the local cross correlation of the reference signal is optimal, so that the channel fading can be effectively resisted, and the channel estimation performance is improved.

Cross-correlation value between

The method can ensure that the overall cross correlation of the reference signals is optimal, can effectively resist channel fading and improves the channel estimation performance.

That is, the present solution is compatible with the prior art. The orthogonal sequence group provided by the scheme can be compatible with the orthogonal sequences used in the prior art, and when the signal transmission method provided by the scheme is adopted for multi-layer transmission, when different transmission ends respectively adopt the sequences in the first orthogonal sequence group and the sequences in the second orthogonal sequence group, the optimal cross correlation between any two non-orthogonal sequences can be achieved, and the smaller interference of pilot signals between different layers is ensured.

As an example of another sequence, for example, the length of the sequence corresponding to the first orthogonal sequence group is 8, and the length of the sequence corresponding to the second orthogonal sequence group is 4.

the sequences of the second orthogonal sequence set include the following sequences:

{1,1,1,1}；{1,-1,1,-1}；{1,1,-1,-1}；{1,-1,-1,1}。

Each row of which represents a sequence, the latter of which is similar, the following sequence can be obtained by the above formula: { -1i, -1,1i,1}; { -1i, 1i, -1}; { -1i, -1, -1i, 1i, -1, -1i, -1}; { -1i,1, -1i, -1,1i,1, -1i,1}; { -1i, -1i,1, -1i, -1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}。

The base sequence is { -1,1i, -1i, -1,1}, the following sequence can be obtained by the above formula: { -1,1i, -1i, -1,1}; { -1,1i, -1i, -1, -1}; { -1, -1, -1i, -1i,1, -1}; { -1, -1i, -1i,1}; { -1,1i, -1i,1, -1}; { -1,1i, -1i,1}; { -1, -1, -1i, -1,1}; { -1, -1i, -1, -1}.

The first orthogonal sequence group may be any one of the four first orthogonal sequence groups. The sequences in any one of the first orthogonal sequence groups are mutually orthogonal. The sequences in the second orthogonal sequence group are also orthogonal to each other.

Wherein, when the sequences of the second orthogonal sequence set include {1, 1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1} the second orthogonal sequence set mapping manner is as shown in prior art 2b, and 8 reference signals are obtained by frequency division and code division. All 8 reference signals are considered as code division, wherein the orthogonal sequences on 8 consecutive subcarriers of the 8 reference signals can be considered as the following sequences:

{1,0，1,0，1,0，1，0}；{1,0，-1,0,1,0，-1,0}；{0，1,0，1,0，1，0，1}；{0，1,0，-1,0,1,0，-1}；{1,0，1,0，-1,0，-1，0}；{1,0，-1,0，-1，0，1,0}；{0，1,0，1,0，-1,0，-1}；{0,1,0，-1,0，-1,0,1}。

the cross-correlation value between any one of the sequences and any one of the sequences in the first orthogonal sequence group is

Wherein the orthogonal code sequences of the reference signal sequences corresponding to the sequences of the first orthogonal sequence group correspond to the positions shown in fig. 12. The positions corresponding to the orthogonal code sequences of the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are identical to those of the prior art as shown in fig. 2 b.

Wherein the mask sequence of the reference signal corresponding to the sequence of the first orthogonal sequence group corresponds to the position shown in fig. 13. In this case, where c (0), c (1), and c (2) shown in fig. 13 are mask sequences corresponding to the first orthogonal sequence group. The mask sequence of the reference signal corresponding to the sequence of the second orthogonal sequence group corresponds to the position shown in fig. 11b, in which case c (0), c (1) and c (2) shown in fig. 11b are the mask sequences corresponding to the second orthogonal sequence group. Wherein the mask sequence corresponding to the first orthogonal sequence group is different from the mask sequence corresponding to the second orthogonal sequence group.

Wherein the local sequence cross correlation of the sequences of the reference signals among the reference signal sequence groups is only related to the sequence w _g,p (. Cndot.) correlation, where w _g,p Cross-correlation between (-) are

The method is optimal, the local cross correlation of the reference signals is optimal, channel fading can be effectively resisted, and channel estimation performance is improved.

Cross-correlation of

The above description only uses the first orthogonal sequence group with the sequence lengths of 4 and 8 as an example, and may be any other length, which is not limited in this aspect.

In the embodiment of the present application, the length of the sequence corresponding to the first orthogonal sequence group is 2 times that of the sequence corresponding to the second orthogonal sequence group, which may be 2 times that of the sequence corresponding to the first orthogonal sequence group, and accordingly, the sequences of the orthogonal sequence groups may be interchanged, which is not particularly limited.

Further, the length multiple 2 may be any other value, and the present embodiment is not specifically limited herein.

On the other hand, the embodiment of the application also provides a signal sending method. The method comprises the following steps:

the network device transmits a first reference signal based on

Generating, wherein the

The method meets the following conditions:

wherein m=0, … M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence;

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g The sequence w _g,p (. Cndot.) is associated with an orthogonal sequence p in the orthogonal sequence group g; the orthogonal sequence group g is one of a first orthogonal sequence group and a second orthogonal sequence, the sequences in the first orthogonal sequence group are mutually orthogonal, the sequences in the second orthogonal sequence group are mutually orthogonal, and any sequence in the first orthogonal sequence group is different from any sequence in the second orthogonal sequence;

wherein,

sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the sequence c _g The value of (-) is associated with sequence set g.

The first orthogonal sequence set and the second orthogonal sequence set are only used as examples, and may be any other multiple orthogonal sequence sets, which is not particularly limited in this scheme.

The network device may be a UE or a base station.

Wherein different orthogonal sequence groups g are associated with different c _g Value of (-).

The sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

E corresponding to a plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.

As one implementation manner, the length of the sequence corresponding to the first orthogonal sequence group is the same as the length of the sequence corresponding to the second orthogonal sequence group.

Wherein the sequences of the first orthogonal sequence set include the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1};

Where i is an imaginary unit.

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i, 1i }; {1,1i,1, -1i }; where i is an imaginary unit.

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i， -1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

{1,1,1,1,1,1,1,1}; {1, -1, -1}; {1, -1, -1, -1}; {1, -1, -1,1}; {1, -1, -1, -1}; {1, -1,1}; {1, -1, -1, -1,1}; {1, -1, -1}; where i is an imaginary unit.

As another implementation manner, the length of the sequence corresponding to the first orthogonal sequence group is 2 times that of the sequence corresponding to the second orthogonal sequence group.

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,1}; {1, -1}; where i is an imaginary unit.

{1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

Wherein the sequences in the second set of mask sequences include the following sequences:

{1,1}; {1,1i }; where i is an imaginary unit.

Referring to fig. 15, a schematic view of a scenario of a signal sending method according to an embodiment of the present application is provided. Wherein the first user equipment group may be determined based on sequences in the first orthogonal sequence group

Further transmitting a reference signal, the second set of user equipment may determine based on sequences in the second set of orthogonal sequences

Further transmitting a reference signal; because the cross correlation of the DMRS pilot sequences used by the two user equipment groups is small, the interference between non-orthogonal DMRS ports is smaller, namely the interference between the two user equipment groups is smaller, and the channel estimation performance is further improved.

The above embodiments describe a signal transmission method, as shown in fig. 16a, and the embodiments of the present application further provide a signal receiving method, which includes steps 1601 to 1602, specifically as follows:

1601. the method comprises the steps that a receiving end sends/receives a signaling, wherein the signaling carries a preset domain segment and indicates a first reference signal combination, and the first reference signal combination comprises one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to different reference signal combinations respectively; all reference signals comprised by the different reference signal combinations constitute a reference signal set comprising at least two reference signal groupsThe method comprises the steps of carrying out a first treatment on the surface of the Reference signal sequences for each reference signal in the at least two reference signal groups

The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group

Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different;

wherein,

The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different;

the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group.

Step 1601 may include: the receiving end sends signaling. The receiving end may be a base station.

Step 1601 may further include: the receiving end receives the signaling. Wherein the receiving end may be a terminal device.

1602. The receiving end receives the one or more reference signals and processes the one or more reference signals according to at least one reference signal sequence.

Wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

As one implementation, the sequences of the first orthogonal sequence set include the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

Alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; where i is an imaginary unit.

As another implementation, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i, 1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,1}; {1, -1}; where i is an imaginary unit.

As another implementation, the sequences of the first orthogonal sequence set include the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}； {-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

{1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

{1,1}; {1,1i }; where i is an imaginary unit.

The signal receiving method may refer to the description of the signal sending method in each embodiment, and will not be repeated here.

On the other hand, the embodiment of the application also provides a signal receiving method. The method comprises the following steps:

the network device receives a first reference signal, the reference signal based on

Generating, wherein the

The method meets the following conditions:

wherein m=0, … M-1, M is

wherein,

The sequence c _g The value of (-) is associated with sequence set g.

The network device may be a UE or a base station.

The sequence c _g (-) satisfy:

wherein, e _g a sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

where i is an imaginary unit.

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

When the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequence corresponding to the sequence of the first orthogonal sequence group is mapped to a first subcarrier with medium interval in the same resource block, the center frequency distance of the adjacent subcarrier in the first subcarrier is k subcarriers, the reference signal sequence corresponding to the sequence of the second orthogonal sequence group is mapped to a second subcarrier with medium interval in the same resource block, the center frequency distance of the adjacent subcarrier in the second subcarrier is 2k subcarriers, and k is a positive integer. The second subcarriers are a subset of the first subcarriers.

In the present invention, the reference signal sequences corresponding to the first orthogonal sequence group and the second orthogonal sequence group may be reference signal sequences on part of time-frequency resources of the reference signal, for example, the reference signal occupies 2 OFDM symbols in the system, and the reference signal sequences corresponding to the first orthogonal sequence group and the second orthogonal sequence group are reference signal sequences on 1 OFDM symbol therein. In addition to the at least two reference signal groups, all reference signals may also include other frequency division multiplexed reference signals.

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,1}; {1, -1}; where i is an imaginary unit.

{1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

{1,1}; {1,1i }; where i is an imaginary unit.

The above sequence can ensure that the interference of the reference signal is low even if the first subcarrier and the second subcarrier are not identical.

As shown in fig. 16b, an embodiment of the present application further provides a communication device, including:

a transceiver unit 1601, configured to receive/send a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to different reference signal combinations respectively; all reference signals included in the different reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

Satisfy the following requirements

Wherein M is an integer from 0 to M-1, M is

Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence; wherein the sequence w _g,p (N) length N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group

sequence c _g (. Cndot.) is one sequence in the first mask sequence set, the sequence c corresponding to the first orthogonal sequence set _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

A processing unit 1602, configured to generate and transmit the one or more reference signals.

The sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

E corresponding to a plurality of reference signal sequences _g Forming a second set of mask sequences, whereinL is a positive integer.

Where i is an imaginary unit.

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,1}; {1, -1}; where i is an imaginary unit.

{1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

{1,1}; {1,1i }; where i is an imaginary unit.

The embodiment of the application also provides a communication device, which comprises: a transceiver unit, configured to send/receive a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to different reference signal combinations respectively; all reference signals included in the different reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups

The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is

sequence c _g (. Cndot.) is one sequence in the first mask sequence set, the sequence c corresponding to the first orthogonal sequence set _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group.

And the processing unit is used for receiving the one or more reference signals and processing the one or more reference signals according to at least one reference signal sequence.

The sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,

representation e _g Alpha times Cronecker product of (C), said alpha satisfying

where i is an imaginary unit.

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

{1,1}; {1, -1}; where i is an imaginary unit.

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1， -1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

{1,1}; {1, -1, -1}; {1, -1, -1}; {1, -1,1}; where i is an imaginary unit.

{1,1}; {1,1i }; where i is an imaginary unit.

As shown in fig. 17, a communication apparatus 1700 is also provided in an embodiment of the present application, and the communication apparatus 1700 is configured to perform the above method. Some or all of the methods described above may be implemented in hardware or in software.

Alternatively, the communication device 1700 may be a chip or an integrated circuit when embodied.

Alternatively, when some or all of the methods of the above embodiments are implemented in software, the communication apparatus 1700 includes: a memory 1702 for storing a program; the processor 1701, configured to execute a program stored in the memory 1702, and the communication device 1700 may further include a communication interface 1703. The program, when executed, enables the communication apparatus 1700 to implement the method provided by the above-described embodiment.

Alternatively, the memory 1702 may be a physically separate unit or may be integrated with the processor 1701.

Alternatively, when some or all of the methods of the above embodiments are implemented by software, the communication apparatus 1700 may include only the processor 1701. The memory 1702 for storing a program is located outside the communication apparatus 1700, and the processor 1701 is connected to the memory 1702 through a circuit/wire or communication interface 1703 or the like for reading and executing the program stored in the memory 1702.

The processor 1701 may be a central processor (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP.

The processor 1701 may further comprise a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), general-purpose array logic (generic array logic, GAL), or any combination thereof.

The memory 1702 may include volatile memory (RAM), such as random-access memory (RAM); the memory may also include a nonvolatile memory (non-volatile memory), such as a flash memory (flash memory), a hard disk (HDD) or a Solid State Drive (SSD); the memory may also comprise a combination of the above types of memories.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the division of the unit is merely a logic function division, and there may be another division manner when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not performed. The coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted across a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a read-only memory (ROM), or a random-access memory (random access memory, RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a digital versatile disk (digital versatile disc, DVD), or a semiconductor medium, such as a Solid State Disk (SSD), or the like.

Claims

A signal transmission method, comprising:

a transmitting end receives/transmits a signaling, wherein the signaling carries a preset domain segment and indicates a first reference signal combination, and the first reference signal combination comprises one or more reference signals; wherein the method comprises the steps ofDifferent values of the preset domain segment in the signaling correspond to a plurality of reference signal combinations; all reference signals included in the plurality of reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups
The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is
Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence;

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group
Corresponding orthogonal code sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed
Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; the g traverses at least the first orthogonal sequence group and the second orthogonal sequence groupA cross sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different;

wherein,
sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the range of self-variable values is
The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different;

the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

the transmitting end generates and transmits the one or more reference signals.
The method according to claim 1, characterized in that the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,
representation e _g Alpha times Cronecker product of (C), said alpha satisfying
E corresponding to the plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.
The method according to claim 1 or 2, wherein the length of the sequence corresponding to the first orthogonal sequence group is the same as the length of the sequence corresponding to the second orthogonal sequence group.
A method according to any one of claims 1 to 3, wherein when the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped on the same sub-carriers in the same resource block.
The method of any one of claims 1 to 4, wherein the sequences of the first set of orthogonal sequences comprise the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1};

where i is an imaginary unit.
The method according to any one of claims 1 to 4, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

Alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1,-1i}；{1，1i,-1，1i}；{1,-1i，1，1i}；{1，1i，1,-1i}；

where i is an imaginary unit.
The method according to any one of claims 1 to 4, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1i,-1，-1,1i，1i，-1,1}；{1i,1i,-1，1,1i，-1i，-1,-1}；{1i,-1i,1，1,1i，1i，1，-1}；{1i,1i,1，-1,1i，-1i，1,1}；{1i,-1i,-1，-1,-1i，-1i，1,-1}；{1i,1i,-1，1,-1i，1i，1,1}；{1i,-1i,1，1,-1i，-1i，-1,1}；{1i,1i,1，-1,-1i，1i，-1,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}； {1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1,-1,1i,-1，-1i，1i,1}；{1i,1,-1，-1i,-1，1i，1i，-1}；{1i,-1,1,-1i,-1，-1i，-1i,-1}；{1i,1,1，1i，-1，1i，-1i,1}；{1i,-1,-1,-1,1i,1,1i，-1i,-1}；{1i,1,-1，-1i,1，-1i,-1i,1}；{1i,-1，1，-1i,1，1i,1i,1}；{1i,1，1，1i,1，-1i,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,1,1,1,1,1,1,1}；{1,-1,1,-1,1,-1,1,-1}；{1,1,-1,-1,1,1,-1,-1}；{1,-1,-1,1,1,-1,-1,1}；{1,1,1,1,-1,-1,-1,-1}；{1,-1,1,-1,-1,1,-1,1}；{1,1,-1,-1,-1,-1,1,1}；{1,-1,-1,1,-1,1,1,-1}；

where i is an imaginary unit.
The method according to claim 1 or 2, wherein the length of the sequence corresponding to the first orthogonal sequence group is 2 times the length of the sequence corresponding to the second orthogonal sequence group.
The method according to claim 1, 2 or 8, wherein when the frequency resources of the reference signals in the at least two reference signal groups include the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group are mapped onto first subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the first subcarriers is k subcarriers, the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped onto second subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the second subcarriers is 2k subcarriers, and k is a positive integer.
The method of claim 1, 2, 8 or 9, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

wherein the sequences of the second orthogonal sequence set include the following sequences:

{1,1}；{1,-1}；

where i is an imaginary unit.
The method of claim 1, 2, 8 or 9, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

Alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

the sequences of the second orthogonal sequence set include the following sequences:

{1,1,1,1}；{1,-1,1,-1}；{1,1,-1,-1}；{1,-1,-1,1}；

where i is an imaginary unit.
The method of claim 2, wherein the sequences in the second set of mask sequences comprise the following sequences:

{1,1}；{1,1i}；

where i is an imaginary unit.
A signal receiving method, comprising:

the method comprises the steps that a receiving end sends/receives a signaling, wherein the signaling carries a preset domain segment and indicates a first reference signal combination, and the first reference signal combination comprises one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to a plurality of reference signal combinations; all reference signals included in the plurality of reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups
The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is
Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence;

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group
Corresponding orthogonal code sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed
Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different;

wherein,
sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the range of self-variable values is
The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different;

the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

The receiving end receives the one or more reference signals and processes the one or more reference signals according to at least one reference signal sequence.
The method according to claim 13, characterized in that the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,
representation e _g Alpha times Cronecker product of (C), said alpha satisfying
E corresponding to the plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.
The method of claim 13 or 14, wherein the length of the sequence corresponding to the first orthogonal sequence set is the same as the length of the sequence corresponding to the second orthogonal sequence set.
The method according to any of claims 13 to 15, wherein when the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped on the same subcarrier in the same resource block.
The method according to any one of claims 13 to 16, wherein the sequences of the first set of orthogonal sequences comprise the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

Alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; where i is an imaginary unit.
The method according to any of claims 13 to 16, wherein the sequences of the first/second set of orthogonal sequences comprise the following sequences:

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i, 1i }; {1,1i,1, -1i }; where i is an imaginary unit.
The method according to any of claims 13 to 16, wherein the sequences of the first/second set of orthogonal sequences comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1i,-1，-1,1i，1i，-1,1}；{1i,1i,-1，1,1i，-1i，-1,-1}；{1i,-1i,1，1,1i，1i，1，-1}；{1i,1i,1，-1,1i，-1i，1,1}；{1i,-1i,-1，-1,-1i，-1i，1,-1}；{1i,1i,-1，1,-1i，1i，1,1}；{1i,-1i,1，1,-1i，-1i，-1,1}；{1i,1i,1，-1,-1i，1i，-1,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

Alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1,-1,1i,-1，-1i，1i,1}；{1i,1,-1，-1i,-1，1i，1i，-1}；{1i,-1,1,-1i,-1，-1i，-1i,-1}；{1i,1,1，1i，-1，1i，-1i,1}；{1i,-1,-1,-1,1i,1,1i，-1i,-1}；{1i,1,-1，-1i,1，-1i,-1i,1}；{1i,-1，1，-1i,1，1i,1i,1}；{1i,1，1，1i,1，-1i,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,1,1,1,1,1,1,1}；{1,-1,1,-1,1,-1,1,-1}；{1,1,-1,-1,1,1,-1,-1}；{1,-1,-1,1,1,-1,-1,1}；{1,1,1,1,-1,-1,-1,-1}；{1,-1,1,-1,-1,1,-1,1}；{1,1,-1,-1,-1,-1,1,1}；{1,-1,-1,1,-1,1,1,-1}；

where i is an imaginary unit.
The method of claim 13 or 14, wherein the length of the sequence corresponding to the first orthogonal sequence set is 2 times the length of the sequence corresponding to the second orthogonal sequence set.
The method according to claim 13, 14 or 20, wherein when the frequency resources of the reference signals in the at least two reference signal groups include the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group are mapped onto first subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the first subcarriers is k subcarriers, the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped onto second subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the second subcarriers is 2k subcarriers, and k is a positive integer.
The method of claim 13, 14, 20 or 21, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

wherein the sequences of the second orthogonal sequence set include the following sequences:

{1,1}；{1,-1}；

where i is an imaginary unit.
The method of claim 13, 14, 20 or 21, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

the sequences of the second orthogonal sequence set include the following sequences:

{1,1,1,1}；{1,-1,1,-1}；{1,1,-1,-1}；{1,-1,-1,1}；

where i is an imaginary unit.
The method of claim 14, wherein the sequences in the second set of mask sequences comprise the following sequences:

{1,1}；{1,1i}；

where i is an imaginary unit.
A communication device, comprising:

a transceiver unit, configured to receive/send a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to a plurality of reference signal combinations; all reference signals included in the plurality of reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups
The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is
Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence;

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group
Corresponding orthogonal code sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed
Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different;

wherein,
sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the range of self-variable values is
The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different;

the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

and a processing unit, configured to generate and send the one or more reference signals.
The apparatus of claim 25, wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,
representation e _g Alpha times Cronecker product of (C), said alpha satisfying
E corresponding to the plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.
The apparatus of claim 25 or 26, wherein the length of the sequence corresponding to the first orthogonal sequence set is the same as the length of the sequence corresponding to the second orthogonal sequence set.
The apparatus according to any one of claims 25 to 27, wherein when the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group and the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped on the same subcarrier in the same resource block.
The apparatus of any one of claims 25 to 28, wherein the sequences of the first set of orthogonal sequences comprise the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

Alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}.
The apparatus of any of claims 25 to 29, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1,-1i}；{1，1i,-1，1i}；{1,-1i，1，1i}；{1，1i，1,-1i}；

where i is an imaginary unit.
The apparatus of any of claims 25 to 29, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1i,-1，-1,1i，1i，-1,1}；{1i,1i,-1，1,1i，-1i，-1,-1}；{1i,-1i,1，1,1i，1i，1，-1}；{1i,1i,1，-1,1i，-1i，1,1}；{1i,-1i,-1，-1,-1i，-1i，1,-1}；{1i,1i,-1，1,-1i，1i，1,1}；{1i,-1i,1，1,-1i，-1i，-1,1}；{1i,1i,1，-1,-1i，1i，-1,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

Alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1,-1,1i,-1，-1i，1i,1}；{1i,1,-1，-1i,-1，1i，1i，-1}；{1i,-1,1,-1i,-1，-1i，-1i,-1}；{1i,1,1，1i，-1，1i，-1i,1}；{1i,-1,-1,-1,1i,1,1i，-1i,-1}；{1i,1,-1，-1i,1，-1i,-1i,1}；{1i,-1，1，-1i,1，1i,1i,1}；{1i,1，1，1i,1，-1i,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，- 1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,1,1,1,1,1,1,1}；{1,-1,1,-1,1,-1,1,-1}；{1,1,-1,-1,1,1,-1,-1}；{1,-1,-1,1,1,-1,-1,1}；{1,1,1,1,-1,-1,-1,-1}；{1,-1,1,-1,-1,1,-1,1}；{1,1,-1,-1,-1,-1,1,1}；{1,-1,-1,1,-1,1,1,-1}；

where i is an imaginary unit.
The apparatus of claim 25 or 26, wherein the length of the sequence corresponding to the first orthogonal sequence set is 2 times the length of the sequence corresponding to the second orthogonal sequence set.
The apparatus of claim 25, 26 or 32, wherein when the frequency resources of the reference signals in the at least two reference signal groups include the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group are mapped to first subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the first subcarriers is k subcarriers, the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped to second subcarriers with medium intervals in the same resource block, the center frequency distance of adjacent subcarriers in the second subcarriers is 2k subcarriers, and k is a positive integer.
The apparatus of claim 25, 26, 32 or 33, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

wherein the sequences of the second orthogonal sequence set include the following sequences:

{1,1}；{1,-1}；

where i is an imaginary unit.
The apparatus of claim 25, 26, 32 or 33, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i， -1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

the sequences of the second orthogonal sequence set include the following sequences:

{1,1,1,1}；{1,-1,1,-1}；{1,1,-1,-1}；{1,-1,-1,1}；

where i is an imaginary unit.
The apparatus of claim 26, wherein the sequences in the second set of mask sequences comprise the following sequences:

{1,1}；{1,1i}。
a communication device, comprising:

a transceiver unit, configured to send/receive a signaling, where the signaling carries a preset field segment and indicates a first reference signal combination, where the first reference signal combination includes one or more reference signals; wherein, different values of the preset domain segment in the signaling correspond to a plurality of reference signal combinations; all reference signals included in the plurality of reference signal combinations form a reference signal set, and the reference signal set comprises at least two reference signal groups; reference signal sequences for each reference signal in the at least two reference signal groups
The method meets the following conditions:

wherein M is an integer from 0 to M-1, M is
Is a sequence length of (2); a is a non-zero complex number; r (m) is a pseudo-random sequence;

wherein the sequence w _g,p Length of (-) is N _g N satisfies n=m mod N _g The M is not less than 2N _g G is the identity of the orthogonal sequence group, and the at least two reference signal groups satisfy the following conditions: reference signal sequences of all reference signals in the first reference signal group
Corresponding orthogonal code sequence w _g,p (. Cndot.) the reference signal sequences of all reference signals in the first orthogonal sequence group and the second reference signal group are formed
Corresponding orthogonal code sequence w _g,p (. Cndot.) forming a second set of orthogonal sequences; traversing at least a first orthogonal sequence group and a second orthogonal sequence group; p traversing all sequences in the orthogonal sequence group; sequences in the first orthogonal sequence group are orthogonal to each other, sequences in the second orthogonal sequence group are orthogonal to each other, and any sequence in the first orthogonal sequence group and any sequence in the second orthogonal sequence group are different;

wherein,
sequence c _g (. Cndot.) is one sequence in the first set of mask sequences, the range of self-variable values is
The sequence c corresponding to the first orthogonal sequence group _g (. Cndot.) sequences c corresponding to the second orthogonal sequence set _g (. Cndot.) is different;

the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

and the processing unit is used for receiving the one or more reference signals and processing the one or more reference signals according to at least one reference signal sequence.
The apparatus of claim 37, wherein the sequence c _g (-) satisfy:

wherein e _g A sequence of length L is indicated,
representation e _g Alpha times Cronecker product of (C), said alpha satisfying
E corresponding to the plurality of reference signal sequences _g And forming a second mask sequence set, wherein L is a positive integer.
The apparatus of claim 37 or 38, wherein the length of the sequence corresponding to the first orthogonal sequence set is the same as the length of the sequence corresponding to the second orthogonal sequence set.
The apparatus of any of claims 37-39, wherein when frequency resources of reference signals in the at least two reference signal groups comprise the same resource block, reference signal sequences corresponding to sequences of the first orthogonal sequence group and reference signal sequences corresponding to sequences of the second orthogonal sequence group are mapped on the same subcarrier in the same resource block.
The apparatus of any one of claims 37 to 40, wherein the sequences of the first set of orthogonal sequences comprise the following sequences: {1,1}; {1, -1}; the sequences of the second orthogonal sequence set include the following sequences: {1,1i }; {1, -1i };

alternatively, the sequences of the first orthogonal sequence set include the following sequences: {1,1i }; {1, -1i }; the sequences of the second orthogonal sequence set include the following sequences: {1,1}; {1, -1}; where i is an imaginary unit.
The apparatus of any one of claims 37 to 40, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{1,1，1,1}；{1，-1,1，-1}；{1,1，-1，-1}；{1，-1，-1,1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1, -1i, -1, -1i }; {1,1i, -1,1i }; {1, -1i, 1i }; {1,1i,1, -1i }; where i is an imaginary unit.
The apparatus of any one of claims 37 to 40, wherein the sequences of the first/second orthogonal sequence sets comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

Alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1i,-1，-1,1i，1i，-1,1}；{1i,1i,-1，1,1i，-1i，-1,-1}；{1i,-1i,1，1,1i，1i，1，-1}；{1i,1i,1，-1,1i，-1i，1,1}；{1i,-1i,-1，-1,-1i，-1i，1,-1}；{1i,1i,-1，1,-1i，1i，1,1}；{1i,-1i,1，1,-1i，-1i，-1,1}；{1i,1i,1，-1,-1i，1i，-1,-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,1i,1i,-1i,-1，-1，-1,1}；{1i,-1i,1i，1i,-1，1，-1,-1}；{1i,1i,-1i,1i,-1，-1，1,-1}；{1i,-1i,-1i，-1i，-1，1，1,1}；{1i,1i,1i,-1i,1,1,1,-1}；{1i,-1i,1i,1i,1，-1，1,1}；{1i,1i,-1i,1i,1，1,-1，1}；{1i,-1i,-1i，-1i，1,-1，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1i,-1,-1,1i,-1，-1i，1i,1}；{1i,1,-1，-1i,-1，1i，1i，-1}；{1i,-1,1,-1i,-1，-1i，-1i,-1}；{1i,1,1，1i，-1，1i，-1i,1}；{1i,-1,-1,-1,1i,1,1i，-1i,-1}；{1i,1,-1，-1i,1，-1i,-1i,1}；{1i,-1，1，-1i,1，1i,1i,1}；{1i,1，1，1i,1，-1i,1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

alternatively, the sequences of the first orthogonal sequence group/the second orthogonal sequence group include the following sequences:

{1,1,1,1,1,1,1,1}；{1,-1,1,-1,1,-1,1,-1}；{1,1,-1,-1,1,1,-1,-1}；{1,-1,-1,1,1,-1,-1,1}；{1,1,1,1,-1,-1,-1,-1}；{1,-1,1,-1,-1,1,-1,1}；{1,1,-1,-1,-1,-1,1,1}；{1,-1,-1,1,-1,1,1,-1}；

where i is an imaginary unit.
The apparatus of claim 37 or 38, wherein the length of the sequence corresponding to the first orthogonal sequence set is 2 times the length of the sequence corresponding to the second orthogonal sequence set.
The apparatus of claim 37, 38 or 44, wherein when the frequency resources of the reference signals in the at least two reference signal groups comprise the same resource block, the reference signal sequences corresponding to the sequences of the first orthogonal sequence group are mapped to equally spaced first subcarriers in the same resource block, the center frequency distance of adjacent subcarriers in the first subcarriers is k subcarriers, the reference signal sequences corresponding to the sequences of the second orthogonal sequence group are mapped to equally spaced second subcarriers in the same resource block, the center frequency distance of adjacent subcarriers in the second subcarriers is 2k subcarriers, and k is a positive integer.
The apparatus of claim 37, 38, 44 or 45, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{1,-1，-1i,-1i}；{1，1,-1i，1i}；{1,-1，1i，1i}；{1，1，1i,-1i}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{1,-1i，-1i,-1}；{1，1i,-1i，1}；{1,-1i，1i，1}；{1，1i，1i,-1}；

wherein the sequences of the second orthogonal sequence set include the following sequences:

{1,1}；{1,-1}；

where i is an imaginary unit.
The apparatus of claim 37, 38, 44 or 45, wherein the sequences of the first set of orthogonal sequences comprise the following sequences:

{-1i,-1,1i，-1,1i，-1,1i，1}；{-1i,1,1i，1,1i，1,1i，-1}；{-1i,-1,-1i，1,1i，-1,-1i，-1}；{-1i,1,-1i，-1,1i，1,-1i，1}；{-1i,-1,1i，-1,-1i，1,-1i，-1}；{-1i,1,1i，1,-1i，-1,-1i，1}；{-1i,-1,-1i，1,-1i，1,1i，1}；{-1i,1,-1i，-1,-1i，-1,1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1,1i,-1，1i，1i,-1，-1i，1}；{-1,-1i,-1，-1i，1i,1，-1i，-1}；{-1,1i,1，-1i，1i,-1，1i，-1}；{-1,-1i,1，1i，1i,1，1i，1}；{-1,1i,-1，1i，-1i,1，1i，-1}；{-1,-1i,-1，-1i，-1i,-1，1i，1}；{-1,1i,1，-1i，-1i，1,-1i，1}；{-1,-1i,1，1i，-1i,-1，-1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，1i，-1i，-1，-1，1i，1i，1}；{-1，-1i，-1i，1，-1，-1i，1i，-1}；{-1，1i，1i，1，-1，1i，-1i，-1}；{-1，-1i，1i，-1，-1，-1i，-1i，1}；{-1，1i，-1i，-1，1，-1i，-1i，-1}；{-1，-1i，-1i，1，1，1i，-1i，1}；{-1，1i，1i，1，1，-1i，1i，1}；{-1，-1i，1i，-1，1，1i，1i，-1}；

alternatively, the sequences of the first orthogonal sequence set include the following sequences:

{-1，-1，1i，1i，-1i，1i，-1，1}；{-1，1，1i，-1i，-1i，-1i，-1，-1}；{-1，-1，-1i，-1i，-1i，1i，1，-1}；{-1，1，-1i，1i，-1i，-1i，1，1}；{-1，-1，1i，1i，1i，-1i，1，-1}；{-1，1，1i，-1i，1i，1i，1，1}；{-1，-1，-1i，-1i，1i，-1i，-1，1}；{-1，1，-1i，1i，1i，1i，-1，-1}；

the sequences of the second orthogonal sequence set include the following sequences:

{1,1,1,1}；{1,-1,1,-1}；{1,1,-1,-1}；{1,-1,-1,1}；

where i is an imaginary unit.
The apparatus of claim 38, wherein the sequences in the second set of mask sequences comprise the following sequences:

{1,1}；{1,1i}。
a computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 12 or causes the computer to perform the method of any one of claims 13 to 24.