CN116250200A

CN116250200A - Communication method and device

Info

Publication number: CN116250200A
Application number: CN202080105653.XA
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: 2023-06-09
Also published as: WO2022067826A1; CN116250200A8

Abstract

The application provides a communication method and device, and relates to the technical field of communication. The method and the device are used for reducing interference between reference signals of different layers. The method comprises the following steps: receiving or transmitting a first signaling; different values of the preset domain segment included in the first signaling correspond to each reference signal combination respectively; all the reference signals included in each reference signal combination form a reference signal set, and the reference signal set comprises at least two reference signal groups; any two reference signal groups satisfy the following conditions: the orthogonal code sequences W (·) of all reference signals in the first reference signal group constitute a first sequence group, and the orthogonal code sequences W (·) of all reference signals in the second reference signal group constitute a second sequence group; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; at least one reference signal is generated and transmitted.

Description

Communication method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method and device.

Background

In the existing mobile communication system, the number of demodulation reference signals (demodulation reference signal, DMRS) supported by the system is limited, so that the number of layers (layers) of data channel space division multiplexing is limited, and corresponding demodulation reference signals are required for transmission of each layer. 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), within one resource block, 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 within one resource block. In addition, the uplink also supports orthogonal frequency division multiplexing (discrete fourier transform-spread-orthogonal frequency division multiplexing, DFT-S-OFDM) waveforms which are spread by adopting the discrete Fourier transform, the default adopts the DMRS configuration type 1, and the system supports 8 orthogonal DMRS multiplexing at maximum.

On the other hand, with the development of mobile communication and the advent of emerging services, there is an increasing demand for high rates. Increasing the number of transmission layers of the data channel paired by multiple users is beneficial to improving the throughput of the system. However, as the number of data channel transmission layers increases, insufficient DMRS may occur. When the network equipment performs multi-user pairing on the terminal equipment, if the total number of actually paired layers exceeds the number of orthogonal DMRS supported by the system, interference is introduced between the DMRS, so that the performance of channel estimation by using demodulation reference signals is degraded, and the performance of multi-layer transmission of a data channel is affected.

Therefore, how to reduce interference of reference signals between different layers while increasing the number of transmission layers between the terminal device and the network device is a problem that needs to be solved at present.

Disclosure of Invention

The embodiment of the application provides a communication method and device for reducing interference among reference signals of different layers. In order to achieve the above objective, the embodiments of the present application provide the following technical solutions:

in a first aspect, a communication method is provided, the method comprising: receiving or transmitting a first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m=0, 1, 2..A is a non-zero complex constant, t=mmod N, the length of the orthogonal code sequence W (·) is N, the range of the independent variable values is 0,1, …, N-1, c (·) is a mask sequence, the range of the independent variable values is a non-negative integer,

any two reference signal groups in the at least two reference signal groups meet the following conditions: reference signal sequences of all reference signals in the first reference signal group

The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group

The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; any one of the first set of sequences and any one of the second set of sequences are different;

wherein the sequence c (-) corresponding to the first sequence set is different from the sequence c (-) corresponding to the second sequence set; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

The at least one reference signal is generated and transmitted.

In the above method provided in the embodiment of the present application, since at least two reference signal groups included in the first reference signal set, any two reference signal groups satisfy a specific condition (i.e., the reference signal sequences of all the reference signals in the first reference signal group)

The corresponding orthogonal code sequences W (·) constitute a second sequence set; first, theEach sequence in a sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence group and the sequences in the second sequence group are different), the above method of the present application can provide more orthogonal code sequences than the prior art, and each orthogonal code sequence is orthogonal to at least other orthogonal code sequences in the belonging sequence group, and each orthogonal code sequence is orthogonal to a part of the orthogonal code sequences in the other sequence groups. Thus, the reference signal obtained by adopting the orthogonal code sequence can keep orthogonal with more reference signals, thereby reducing the interference among the reference signals of different layers.

For example, when the reference signal in the method provided in the present application is DMRS, taking the scenario shown in fig. 6 as an example, the orthogonal code sequence corresponding to DMRS in the UE group 3 may be made to use the orthogonal code sequence in the same sequence subgroup in the same sequence group (for example, the orthogonal code sequence in the first sequence subgroup in the first sequence group), and the orthogonal code sequence corresponding to DMRS in the UE group 4 may be made to use the orthogonal code sequence in the second sequence subgroup in the first sequence group, and the orthogonal code sequence corresponding to DMRS in the UE group 5 may be made to use the orthogonal code sequence in the third sequence subgroup in the second sequence group (wherein the sequence in the third sequence subgroup is orthogonal to the sequence in the second sequence subgroup). Thus, the interference of the reference signals between different layers can be reduced while the number of transmission layers is increased.

In one implementation, when the at least one reference signal includes two or more reference signals, orthogonal code sequences W (·) corresponding to the two or more reference signals belong to the same sequence subgroup.

In the implementation manner, when the network device indicates the reference signal for the terminal device, two or more reference signals corresponding to the orthogonal code sequences in the same sequence subgroup are distributed to the same terminal device, so that no interference exists between the two or more reference signals sent by the same terminal device. In addition, by the implementation manner, when the reference signals are distributed to other terminal equipment except the terminal equipment, the reference signals which do not have interference with the terminal equipment can be conveniently distributed to the other terminal equipment.

In one implementation, the reference signal combinations form a reference signal combination set, the reference signal combination set satisfying: the set of reference signal combinations is a proper subset of all possible reference signal combinations in the set of reference signals, and the set of reference signal combinations includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.

In one implementation, when the frequency resources of the reference signals in the reference signal set include the same resource block, the reference signal sequences corresponding to the sequences of the first sequence group and the reference signal sequences corresponding to the sequences of the second sequence group are mapped on the same subcarrier in the same resource block.

That is, when the reference signals in the first reference signal set multiplex the same resource block RB, the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal sequence corresponding to the sequence of the second sequence group may be multiplexed the same subcarrier in the mapping process. It is also understood that, in the mapping process, the reference signal corresponding to the sequence of the first sequence group and the reference signal corresponding to the sequence of the second sequence group are mapped as reference signals in the same CDM group.

For example, in the mapping process, the first item of the reference signal sequence corresponding to the first sequence group and the first item of the reference signal sequence corresponding to the second sequence group are both mapped on the same RE, the second item is also mapped on the same RE, and so on.

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

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}; the sequence subgroup comprises: first sequence subgroup: {1, 1}, {1, -1, -1}; second sequence subgroup: {1, -1, -1}, {1, -1,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, j,1, j }, {1, -j,1, -j }, {1, j, -1, -j }, {1, -j, -1, j }; the sequence subgroup comprises: first sequence subgroup: {1, j,1, j }, {1, -j,1, -j }; second sequence subgroup: {1, j, -1, -j }, {1, -j, -1, j }.

Through the implementation manner, the number of orthogonal code sequences adopted by the reference signals can be increased, the number of the reference signals is increased, and the reference signals obtained by adopting the orthogonal code sequences in the implementation manner can keep orthogonality with more reference signals, so that interference among the reference signals of different layers is reduced.

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences:

{1,-j,-j,-1,1,-j,-j,-1}、{1,j,-j,1,1,j,-j,1}、{1,-j,j,1,1,-j,j,1}、{1,j,j,-1,1,j,j,-1}、{1,-j,-j,-1,-1,j,j,1}、{1,j,-j,1,-1,-j,j,-1}、{1,-j,j,1,-1,j,-j,-1}、{1,j,j,-1,-1,-j,-j,1}；

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

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、 {1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

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

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}。

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }, {1, -1, -j, -j, -1, j, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j, -j }, {1, j, -j, -1, -j, j }; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }, {1, -j, -1, j, {1, j, -1, -j, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1}; the sequence subgroup comprises: first sequence subgroup: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}; second sequence subgroup: {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -1, -j,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }, {1, -1, -j, -j, -1, j, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j, -j }, {1, j, -j, -1, -j, j }; the sequence subgroup comprises: first sequence subgroup: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }; second sequence subgroup: {1, -1, -j, -j, -1, j }, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j }; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; the sequence subgroup comprises: first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1}; second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }, {1, -j, -1, j, {1, j, -1, -j, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }; the sequence subgroup comprises: first sequence subgroup: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }; second sequence subgroup: {1, -j, -1, j,1, j }, {1, j, -1, -j,1, -j }, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set 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}.

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; the sequence subgroup comprises: first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1}; second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set 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}; the sequence subgroup comprises: first sequence subgroup: {1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1}; second sequence subgroup: {1, -1, -1, -1,1}, {1, -1, -1, -1, -1}, {1, -1, -1, -1, -1}, {1, -1, -1, 1}.

In one implementation manner, each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.

In a second aspect, a communication method is provided, the method comprising: receiving or transmitting a first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination form a reference signal set, and the reference signal set comprises at least two reference signal groups; each parameter in the at least two reference signal groupsReference signal sequence of test signal

The method meets the following conditions:

wherein r (m) is a pseudo-random sequence, m=0, 1,2., a is a non-zero complex constant, the length of the orthogonal code sequence W (·) is N, the range of the independent variable values is 0,1, …, N-1, t=m mod N, c (·) is a mask sequence,

The corresponding orthogonal code sequences c (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence set and the sequences in the second sequence set are different;

the at least one reference signal is received.

In one implementation, the reference signal combinations form a reference signal combination set, the reference signal combination set satisfying:

The reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set at least comprises all combination modes of reference signals corresponding to sequences in the same sequence subgroup.

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }, {1, -1, -j, -j, -1, j, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j, -j }, {1, j, -j, -1, -j, j }; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }, {1, -j, -1, j, {1, j, -1, -j, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j };

In one implementation, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set 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};

In a third aspect, there is provided a communication apparatus comprising:

the communication unit is used for receiving or transmitting the first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m=0, 1,2, a is a non-zero complex constant, the length of the orthogonal code sequence W (·) is N, the range of the argument value is 0,1, …, N-1, t=mmod N, c (·) is a mask sequence, the range of the argument value is a non-negative integer,

The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence set and the sequences in the second sequence set are different;

and the reference signal transmitting unit is used for generating and transmitting the at least one reference signal.

In one implementation, the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:

In one implementation, when the frequency resources of the reference signals in the reference signal set include the same resource block, the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal sequence corresponding to the sequence of the second sequence group are mapped on the same subcarrier in the same resource block.

In a fourth aspect, there is provided a communication apparatus comprising:

The method meets the following conditions:

wherein r (m) is a pseudo-random sequence, m=0, 1,2., a is a non-zero complex constant, the length of the orthogonal code sequence W (·) is N, the range of the independent variable values is 0,1, …, N-1, t=m mod N, c (·) is a mask sequenceThe independent variable value range is a non-negative integer,

The corresponding orthogonal code sequences v form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group

and the reference signal receiving unit is used for receiving the at least one reference signal.

In a fifth aspect, there is provided a communication device comprising at least one processor and interface circuitry, the at least one processor being configured to communicate with other devices via the interface circuitry to perform a communication method as described in the first aspect above.

In a sixth aspect, there is provided a communication device comprising at least one processor and interface circuitry, the at least one processor being configured to communicate with other devices via the interface circuitry to perform a communication method as described in the first aspect above.

In a seventh aspect, a chip is provided, the chip comprising processing circuitry and an interface; the processing circuit is configured to call up and run a computer program stored in a storage medium from the storage medium to perform the communication method as described in the first aspect above or to perform the communication method as described in the second aspect above.

In an eighth aspect, a computer-readable storage medium having instructions stored therein is provided; when the instructions are executed, the communication method as described in the first aspect is performed, or the communication method as described in the second aspect is performed.

A ninth aspect provides a computer program product comprising instructions; the instructions, when executed on a computer, cause the computer to perform the communication method as described in the first aspect above, or cause the computer to perform the communication method as described in the second aspect above.

In a tenth aspect, there is provided a communication system comprising: a first communication device and a second communication device; wherein: the first communication device is configured to perform the method described in the first aspect; the second communication device is configured to perform the method described in the second aspect.

The technical effects of any one of the second to tenth aspects may be seen in the technical effects of the first aspect, and are not described herein.

Drawings

FIG. 1 is a schematic diagram of a pilot pattern provided in the prior art;

FIG. 2 is a second diagram of a pilot pattern provided in the prior art;

FIG. 3 is a third diagram of a pilot pattern provided in the prior art;

FIG. 4 is a schematic diagram of a network architecture according to an embodiment of the present disclosure;

FIG. 5 is a second diagram of a network architecture according to an embodiment of the present disclosure;

FIG. 6 is a third diagram of a network architecture according to an embodiment of the present disclosure;

fig. 7 is a schematic flow chart of a communication method according to an embodiment of the present application;

fig. 8 is a schematic diagram of a division manner of an orthogonal code sequence according to an embodiment of the present application;

fig. 9A is one of schematic diagrams of a pilot pattern provided in an embodiment of the present application;

FIG. 9B is a second diagram of a pilot pattern provided in an embodiment of the present application;

FIG. 10 is a third diagram illustrating a pilot pattern according to an embodiment of the present disclosure;

FIG. 11 is a fourth schematic diagram of a pilot pattern provided in an embodiment of the present application;

FIG. 12 is a second flow chart of a communication method according to the embodiment of the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a second schematic structural diagram of a communication device according to the embodiment of the present application;

fig. 15 is a third schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the embodiments of the present application, the words "first", "second", etc. are used to distinguish identical items or similar items having substantially identical functions and actions for the sake of clarity in describing the embodiments of the present application. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ. Meanwhile, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion that may be readily understood.

The network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

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

1. resource BLOCK (RB)

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); in the frequency domain, the smallest resource granularity may be one subcarrier. One OFDM symbol and one subcarrier constitute one Resource Element (RE), as shown in fig. 1. 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.

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

Currently, in a communication system, DMRS is used for uplink and 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 and 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 of the multi-antenna system, a certain number of parallel data streams are allocated to each scheduled User Equipment (UE) according to factors such as channel conditions of each UE, wherein each data stream is called a layer transmission, and data streams of different layers adopt different spatial precoding vectors. 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. Each layer of transmission may correspond to one DMRS, where the DMRS is used to perform channel estimation for the layer of transmission.

The precoding vector corresponding to each DMRS is the same as the precoding vector of the transmission of the layer corresponding to each DMRS, and the receiving end can respectively perform channel estimation according to each DMRS to obtain the channel estimation values of the transmission of different layers. 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 (n) of the DMRS in the NR system may be obtained by modulating the sequence c (n) through quadrature phase shift keying (quadrature phase shift keying, QPSK), and c (n) may be defined as a Gold sequence. Further, r (n) can be expressed as:

wherein,

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

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod 2

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

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

Taking PUSCH as an example, c _init The information such as the DMRS scrambling code identification (Identity document, ID), cell ID, subframe position and symbol position of DMRS.

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

Specifically, in the case where DMRS corresponding to the multi-layer transmission multiplexes the same time-frequency resource, different DMRS ports 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 DMRS. For example, two DMRS configuration types, configuration type 1 and configuration type 2, may be supported in some protocols today. The DMRS of different ports in the same CDM group are spread on a time-frequency domain by using orthogonal codes, orthogonality of the DMRS of different ports is guaranteed, and a frequency division mode is adopted among the DMRS of different CDM groups to guarantee mutual orthogonality of the DMRS.

Taking PUSCH DMRS using CP-OFDM waveforms as an example, fig. 2 is a schematic diagram of a pilot pattern using DMRS of configuration type 1. When one symbol is configured for DMRS, resource Elements (REs) of two patterns in (a) in fig. 2 represent REs occupied by CDM group 0 and CDM group 1, and p0, p1, p2, and p3 represent DMRS port indexes, respectively. In the same CDM group, an orthogonal code (code length is 2) is used to ensure that DMRS of two DMRS ports in 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 DMRS configuration employs type 1 and DMRS configuration is one symbol, the system supports orthogonal DMRS multiplexing of 4 DMRS ports at maximum.

When two symbols are configured for DMRS, REs of the two patterns in (b) in fig. 2 represent REs occupied by CDM group 0 and CDM group 1, respectively, p0, p1, and p6, p7 represent DMRS port indexes, respectively. In the same CDM group, an orthogonal code (with a code length of 4) is used to ensure that DMRS sequences of 4 DMRS ports in 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 ports to be orthogonal at maximum.

For another example, fig. 3 shows a schematic diagram of a pilot pattern using DMRS of configuration type 2. When one symbol is configured for DMRS, REs of three patterns in (a) in fig. 3 represent REs occupied by three CDM groups, p0, p1, p2, respectively. In the same CDM group, an orthogonal code with a code length of 2 is adopted to ensure that the DMRS sequences of two DMRS ports in the same CDM group are orthogonal. When type 2 is employed and DMRS configures one symbol, the system supports a maximum of 6 DMRS orthogonal multiplexes.

When two symbols are configured for DMRS, REs of three patterns in (b) in fig. 3 represent REs occupied by three CDM groups, p0, p1, p2, respectively. In the same CDM group, an orthogonal code with a code length of 4 is adopted to ensure the orthogonality of the DMRS sequences of four DMRS ports in the same CDM group. It can be seen that when type 2 is employed and DMRS is configured for two symbols, the system supports a maximum of 12 DMRS orthogonal multiplexes.

In addition, in uplink or downlink transmission, the base station needs to instruct the UE of allocation of DMRS ports 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 allocation of DMRS ports of each scheduled UE itself, but also the port allocation of DMRS of the UE co-scheduled therewith in DCI.

The following describes the technical solutions provided in the embodiments of the present application with reference to examples. 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.

Fig. 4 is a schematic diagram of a network architecture to which the technical solution provided in the embodiments of the present application is applied. Wherein, the network may include: a terminal device, a radio access communication network (radio access network, RAN) or AN access communication network (AN) (RAN and AN are collectively referred to as (R) AN), and a Core Network (CN).

The terminal device may be a device having a wireless transceiving function. The terminal device may be of different names, such as User Equipment (UE), access device, terminal unit, terminal station, mobile station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal apparatus, etc. Terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; may also be deployed on the surface of water (e.g., a ship, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.). The terminal device includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. For example, the terminal device may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiver function. The terminal device may also be a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, an industrial control terminal, a wireless terminal in unmanned, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city, a wireless terminal in smart home, etc. In this embodiment of the present application, the device for implementing the function of the terminal device may be the terminal device, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system or the like. In this application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

The (R) AN mainly comprises access network equipment. The access network device may also be referred to as a base station. The base station may comprise various forms of base stations. For example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. The method specifically comprises the following steps: an Access Point (AP) in a wireless local area network (Wireless Local Area Network, WLAN), a base station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile Communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a base station (NodeB, NB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), an Evolved base station (Evolved Node B, eNB or eNodeB) in LTE, a relay station or access point, a vehicle device, a wearable device, a next generation Node B (The Next Generation Node B, gNB) in a 5G network, a base station in a future Evolved public land mobile network (Public Land Mobile Network, PLMN) network, or the like.

A base station typically includes a baseband unit (BBU), a remote radio unit (remote radio unit, RRU), an antenna, and a feeder for connecting the RRU and the antenna. Wherein the BBU is responsible for signal modulation. The RRU is used for being responsible for radio frequency processing. The antenna is used for converting between the cable uplink traveling wave and the space wave in the air. On the one hand, the distributed base station greatly shortens the length of the feeder line between the RRU and the antenna, can reduce signal loss and can also reduce the cost of the feeder line. On the other hand, the RRU and the antenna are smaller, and the RRU and the antenna can be installed in a random manner, so that the network planning is more flexible. Besides RRU remote, BBU can be centralized and placed in a Central Office (CO), and by the centralized mode, the number of base station rooms can be greatly reduced, the energy consumption of matched equipment, particularly an air conditioner, and a large amount of carbon emission can be reduced. In addition, after the scattered BBUs are concentrated to become a BBU baseband pool, unified management and scheduling can be realized, and resource allocation is more flexible. In this mode, all physical base stations evolve into virtual base stations. And all the virtual base stations share information such as data receiving and transmitting, channel quality and the like of users in the BBU baseband pool and cooperate with each other so that joint scheduling is realized. In some deployments, a base station may include a Centralized Unit (CU) and a Distributed Unit (DU). The base station may also include an active antenna unit (active antenna unit, AAU). CU realizes part of the functions of the base station and DU realizes part of the functions of the base station. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC for short), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Since the information of the RRC layer is eventually changed into the information of the PHY layer or is converted from the information of the PHY layer, under this architecture, higher layer signaling, such as RRC layer signaling or PDCP layer signaling, may also be considered as being transmitted by the DU or by the du+aau. It may be understood that in the embodiment of the present application, the access network device may be a device including one or more of a CU node, a DU node, and an AAU node. In addition, a CU may be divided into network devices in the RAN, or may be divided into network devices in a Core Network (CN), which may not be limiting herein.

The core network comprises a plurality of core network elements (or network function elements), for example in fig. 4, in a fifth Generation mobile communication technology (5 th-Generation, 5G) system, the core network comprises: access and mobility management (access and mobility management services, AMF) network elements, session management function (session management function, SMF) network elements, PCF network elements, user plane function (user plane function, UPF) network elements, application layer function (application function) network elements, AUSF network elements, and UDM network elements.

Furthermore, the core network may also comprise some network elements not shown in fig. 4, such as: the security anchor function (security anchor function, SEAF) network element, the authentication credentials library, and the processing function (authentication credential repository and processing function, ARPF), embodiments of which are not described herein.

In addition, in a wireless communication network, communications can be classified into different types according to the kinds of transmitting nodes and receiving nodes. For example, information transmitted from a network device to a terminal device is referred to as Downlink (DL) communication; the information sent by the terminal device to the network device is referred to as Uplink (UL) communication. The network device may specifically refer to a network element in a base station or a core network, which is capable of performing information interaction with a terminal device.

The following describes the inventive concepts of the embodiments of the present application:

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 ports that are maximally supported by the system.

In order to avoid the limitation of the number of transmission layers of network pairing by the orthogonal DMRS ports supported by the system at the maximum, the prior art generally adopts a mode of using a plurality of scrambling sequences to achieve the purpose of expanding the number of ports.

Specifically, as shown in fig. 5, a schematic diagram of a communication system according to an embodiment of the present application is provided. Which may include a network device 101 and one or more terminal devices 102 (including terminal device 102_1, terminal devices 102_2, … …, terminal device 102_n+1, terminal device 102_n+2, … …, and terminal device 102_n+m) coupled to network device 101. The network device 101 may be AN access network device, for example, the network device 101 may be a device in AN (R) AN in fig. 4, or the network device 101 may be a network element capable of performing information interaction with a terminal device in a core network. One or more of the terminal devices 102 may be the terminal devices described above in fig. 4.

In the communication system shown in fig. 5, in the case where one or more terminal apparatuses 102 transmit uplink information to the network apparatus 101 or the network apparatus 101 transmits downlink information to one or more terminal apparatuses 102, the number of transmission layers of the network pairing is limited by the number of ports of the DMRS of the orthogonal multiplexing that is maximally supported by the system. For example, in uplink communication, in order to maintain orthogonality of DMRS corresponding to each layer transmission, the number of transmission layers of network pairing cannot exceed 8 layers in the case where DMRS shown in (a) of fig. 2 is used as configuration type 1 and DMRS is configured with two symbols, or the number of transmission layers of network pairing cannot exceed 12 layers in the case where DMRS shown in (b) of fig. 2 is used as configuration type 2 and DMRS is configured with two symbols.

In order to support more transmission layers, in one possible design, a plurality of DMRS ports may be used to correspond to different scrambling sequences r (n), so as to achieve the purpose of expanding the number of DMRS ports. For example, in the system shown in fig. 5, by using one scrambling sequence for the DMRS port adopted in the UE group 1 and another scrambling sequence for the DMRS port adopted in the UE group 2, the limitation of the number of transmission layers of the port number of the DMRS of the orthogonal multiplexing supported by the system is avoided, thereby achieving the purpose of expanding the number of ports. In this case, when the DMRS ports use the same time-frequency resource, if the scrambling sequences used are different, orthogonality cannot be ensured even if orthogonal codes are superimposed on the DMRS ports, that is, in fig. 5, the DMRS ports in each UE group can keep orthogonality and do not interfere with each other, but interference occurs between the UE group 1 and the UE group 2 due to the fact that the ports are not orthogonal, which affects the performance of channel estimation. Specifically, in fig. 5, DMRSs used in UE group 1 are orthogonal to each other, DMRSs used in UE group 2 are orthogonal to each other, and interference occurs between each DMRS in UE group 1 and each DMRS in UE group 2.

For another example, in the scenario of joint reception at uplink multiple transmission reception points (transmission reception point, TRP), fig. 6 is a schematic diagram of another communication system according to an embodiment of the present application. The communication system may include a network device 201, a network device 202, one or more terminal devices 203 connected to the network device 201 (including terminal device 203_1, terminal device 203_2, … … terminal device 203_n, terminal devices 203_n+1, … … terminal device 203_n+m in the figure), and one or more terminal devices 204 connected to the network device 202 (including terminal device 204_1, terminal device 204_2, … … terminal device 204_n in the figure), where the terminal devices 202_n+1, … … terminal devices 202_n+m are also connected to the network device 202. Wherein network device 201 and network device 202 need to jointly receive the signals of UE group 4, measure the channels of UE group 4.

The network device 201 and the network device 202 may be specifically access network devices, for example, devices in AN (R) AN in fig. 4, or the network device 201 and the network device 202 may be specifically network elements capable of performing information interaction with terminal devices in a core network. One or more of the terminal devices 102 may be the terminal devices described above in fig. 4.

In addition, in order to expand the DMRS port number, different scrambling sequences are allocated between different cells, and the scrambling sequences are not orthogonal to each other, for example, in fig. 6, the same scrambling sequence is used for UE group 3 and UE group 4, and another scrambling sequence is used for UE group 5. Then, since UE group 4 and UE group 5 use different scrambling sequences, when network device 202 receives the signal of UE group 4, DMRS of UE group 5 will generate strong interference to DMRS of UE group 4, which further results in serious degradation of channel estimation performance of UE group 4.

It can be seen that the above prior art has a problem of serious DMRS interference between different transmission layers by extending DMRS ports by using multiple scrambling sequences.

Under the configuration type of the current pilot signal, for example, as shown in (b) of fig. 2, a scrambling sequence overlaps 4 long OCCs to obtain 4 DMRS with ports p0, p1, p4 and p5 occupying the same RE, a new group of 4 long OCCs is introduced, and 4 DMRS can be newly added and can be recorded as ports p0', p1', p4', p5', so that DMRS corresponding to ports p0', p1', p4', p5' occupy the same RE as DMRS corresponding to ports p0, p1, p4 and p 5. The purpose of expanding the number of the DMRS can be achieved, and the number of transmission layers is further increased. Based on this idea, in order to reduce interference of reference signals between different layers, the embodiment of the application provides a communication method, as shown in fig. 7, including: s301, the network equipment sends a first instruction.

The network device may be AN access network device, for example, the network device may be a device in AN (R) AN in fig. 4, or the network device may be a network element in a core network capable of performing information interaction with a 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 each of the above-described reference signal combinations constitute a reference signal set (hereinafter, this reference signal set will be referred to as "first reference signal set" in order to facilitate distinguishing the reference signal set from other reference signal sets). For example, each of the above reference signal combinations includes 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. For another example, r (m) may multiplex the generation scheme of the related art, as in the above-described NR system.

m is an integer, i.e., m=0, 1,2. In particular, when the reference signal sequence

At length M, m=0, 1,2.

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, the technician may determine the value of a based on the transmit power of the device transmitting the reference signal. That is, the value of a may not be limited in the embodiments of the present application.

t＝m mod N，

The length of the orthogonal code sequence W (& gt) is N, and the value range of the independent variable is 0,1,2, … and N-1. For example, when the first reference signal set is a DMRS set, the orthogonal code sequence W (·) may be an OCC of each DMRS.

c (·) is a mask sequence whose length depends on M, is

The representation is rounded up to the top,

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

In addition, any two reference signal groups of the at least two reference signal groups are described as a first reference signal group and a second reference signal group, and the following conditions are satisfied:

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

The corresponding orthogonal code sequences W (·) constitute a second sequence set. Wherein:

first, each sequence in the first sequence group is orthogonal, and each sequence in the second sequence group is orthogonal. Any one of the sequences in the first sequence set is different from any one of the sequences in the second sequence set.

For example, the first set of sequences includes: sequence set a and sequence set b. Wherein, the sequence group a comprises {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}; the sequence group b includes {1, j,1, j }, {1, -j,1, -j }, {1, j, -1, -j }, {1, -j, -1, j }. It can be seen that each sequence in sequence set a is orthogonal and each sequence in sequence set b is orthogonal. Any one of the sequences in the sequence group a is different from any one of the sequences in the sequence group b.

Where j is an imaginary unit.

In addition, the first sequence group comprises at least two sequence subgroups, and the second sequence group comprises at least two sequence subgroups. The sequences in a subset of sequences in the first sequence set are orthogonal to the sequences in a subset of sequences in the second sequence set.

For example, as shown in fig. 8, the reference signal sequences of all the reference signals in the first reference signal group

The corresponding orthogonal code sequences W (·) constitute a first sequence set in fig. 8, which includes two sequence subgroups: a first sequence subgroup and a second sequence subgroup. Reference signal sequences of all reference signals in the second reference signal group

The corresponding orthogonal code sequences W (t) constitute a second sequence group in fig. 8, in which two sequence subgroups are included: a third sequence subgroup and a fourth sequence subgroup. Wherein each sequence in the first sequence group is orthogonal, and each sequence in the second sequence group is orthogonal. Any one of the sequences in the first sequence set is different from any one of the sequences in the second sequence set.

In addition, the sequences in the first sequence set are orthogonal to sequences in a subset of the partial sequences in the second sequence set and are not orthogonal to sequences in another subset of the partial sequences in the second sequence set. That is, in fig. 8, one of the following two conditions is satisfied:

the sequences in the first and first sequence subsets are orthogonal to the sequences in the third sequence subset and are not orthogonal to the sequences in the fourth sequence subset. The sequences in the second sequence subgroup are non-orthogonal to the sequences in the third sequence subgroup and are orthogonal to the sequences in the fourth sequence subgroup.

It should be noted that, the sequences in one sequence subgroup described in the present application are not orthogonal to the sequences in another sequence subgroup, specifically expressed as follows: at least one pair of sequences in the two sequence subsets are not orthogonal, and in addition to the non-orthogonal sequence pairs, the two sequence subsets can also comprise orthogonal sequence pairs. For example, the sequences in the first sequence subgroup are not orthogonal to the sequences in the fourth sequence subgroup above, i.e. there is at least one sequence in the first sequence subgroup that is not orthogonal to at least one sequence in the fourth sequence subgroup.

The sequences in the second and first sequence subsets are not orthogonal to the sequences in the third sequence subset and are orthogonal to the sequences in the fourth sequence subset. The sequences in the second sequence subgroup are orthogonal to the sequences in the third sequence subgroup and are not orthogonal to the sequences in the fourth sequence subgroup.

As another example, take the above as an example: sequence group a includes sequence subgroup 1 and sequence subgroup 2; sequence group b includes sequence subgroup 3 and sequence subgroup 4. Wherein, sequence subgroup 1 comprises {1, 1}, {1, -1, -1}; sequence subgroup 2 includes: {1, -1, -1}, {1, -1,1}; sequence subgroup 3 includes: {1, j,1, j }, {1, -j,1, -j }; sequence subgroup 4 includes: {1, j, -1, -j }, {1, -j, -1, j }.

It can be seen that each sequence in sequence subgroup 1 is not orthogonal to each sequence in sequence subgroup 3, each sequence in sequence subgroup 1 is orthogonal to each sequence in sequence subgroup 4; each sequence in sequence subgroup 2 is orthogonal to each sequence in sequence subgroup 3, and each sequence in sequence subgroup 2 is not orthogonal to each sequence in sequence subgroup 4. That is to say: the sequences in one sequence subgroup in sequence group a are orthogonal to the sequences in the partial sequence subgroup in sequence group b.

In addition, in the method provided by the embodiment of the present application, the sequence c (·) corresponding to the first sequence group is different from the sequence c (·) corresponding to the second sequence group. That is, the reference signal sequences of all the reference signals in the first reference signal group

In the corresponding orthogonal code sequences W (·) each sequence W (·) in the same sequence group corresponds to the same sequence c (·) and different sequence groups correspond to different sequences c (·) respectively.

Alternatively, the sequence c (·) may satisfy:

wherein e represents a sequence of length L,

represents the alpha-order kronecker product of e;

for example, when L is 2, e may be: {1,1}; {1, j }.

For example, when α is 3, e is {1, j }, then

For example, e is {1,1}, c (·) is the sequence {1, …,1}, i.e. the full 1 sequence, e is {1, j }, another different c (·) can be: 4 is {1, j, -1} for a long time, 8 is {1, j, -1, -1, -j } for a long time, 16 are {1, j, -1, -1, -j, -1, -j, -j,1} and so on over a long period of time. Hereinafter, the description will not be repeated.

The sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group. That is, all reference signals in the first reference signal group and the second reference signal group have the same corresponding sequence r (m).

It should be noted that, in the foregoing description of the embodiments of the present application, the "reference signal group" is a division of reference signals logically. That is, as long as the reference signals in the first reference signal set can be divided into at least two reference signal groups according to the above description of the present application. The storage and data processing of the reference signals in different reference signal groups can not be distinguished. Similarly, the "sequence group" and the "sequence subgroup" in the above description of the embodiments of the present application are also the division of the orthogonal code sequences W (·) logically corresponding to different reference signal sequences. That is, as long as the orthogonal code sequences W (·) corresponding to different reference signal groups are divided into different sequence groups according to the above description of the present application, and each sequence group may be divided into at least two sequence subgroups satisfying the condition according to the above description of the present application.

In one implementation, when at least one reference signal included in the first reference signal combination includes two or more reference signals, orthogonal code sequences W (·) corresponding to the two or more reference signals belong to the same sequence subgroup.

In the implementation manner, when the network device indicates the reference signals to the terminal device, two or more reference signals corresponding to the orthogonal code sequences in the same sequence subgroup are distributed to the same terminal device, so that no interference exists between the two or more reference signals sent by the same terminal device. In addition, by the implementation manner, when the reference signals are distributed to other terminal equipment except the terminal equipment, the reference signals which do not have interference with the terminal equipment can be conveniently distributed to the other terminal equipment.

In one implementation, the reference signal combination set formed by the reference signal combinations corresponding to the first signaling with different preset domain segment values satisfies the following conditions:

the reference signal combination set is a proper subset of all possible reference signal combinations in the first reference signal set, and the reference signal combination set includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.

For example, the first reference signal set includes

reference signals

0,1, 2, and 3, and all possible reference signal combinations in the first reference signal set are {0}, {1}, {2}, {3}, {0,1}, {0,2}, {0,3}, {1,2}, {1,3}, {1,4}, {2,4}, {3,4}, {1,2,3}, {1,2,4}, {1,3,4}, {2,3,4}, and {1,2,3,4}, where, for example, {0,2} means a combination including

reference signals

0 and 2, {1} means a combination including only reference signals 1, and it is understood that the reference signal combination includes at least one reference signal. All reference signal combinations that the first instruction is capable of indicating also need to be a proper subset of all possible reference signal combinations in the first reference signal set.

For another example, taking the division manner of the orthogonal code sequences shown in fig. 8 as an example, it is assumed that the first sequence subgroup includes sequence 1, sequence 2, and sequence 3; the second sequence subgroup comprises sequence 4, sequence 5 and sequence 6; the third sequence subgroup comprises sequence 7, sequence 8 and sequence 9; the fourth subset of sequences includes sequence 10, sequence 11, and sequence 12. Then, for the first sequence subgroup, the first reference signal combination indicated by the first instruction may be {1,2} or {1,3} or {2,3} or {1,2,3} when the first reference signal combination includes two or more reference signals, where {1,2} represents a combination including the reference signal corresponding to sequence 1 and the reference signal corresponding to sequence 2. A second sequence subgroup, a third sequence subgroup, a fourth sequence subgroup, and so on.

In one implementation, when the frequency resources of the reference signals in the first reference signal set include the same resource blocks, the reference signal sequences corresponding to the sequences of the first sequence group and the reference signal sequences corresponding to the sequences of the second sequence group are mapped on the same subcarriers in the same resource blocks.

That is, when the reference signals in the first reference signal set multiplex the same resource block RB, the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal sequence corresponding to the sequence of the second sequence group may be multiplexed the same subcarrier in the mapping process.

For example, in the mapping process, the first item of the reference signal sequence corresponding to the first sequence group and the first item of the reference signal sequence corresponding to the second sequence group are mapped on the same RE, the second item is also mapped on the same RE, and so on.

For example, other reference signals may be included in the first set of reference signals. At this time, the reference signal corresponding to the sequence of the first sequence group and the reference signal corresponding to the sequence of the second sequence group occupy the same RE. Other reference signals may occupy different REs than the reference signals corresponding to the sequences of the first sequence group.

In addition, in the embodiment of the present application, specific sequences in the orthogonal code sequences W (·) corresponding to the reference signals in the first reference signal set are further provided when the orthogonal code sequences W (·) are of different lengths:

scheme one: in the set of orthogonal code sequences W (t) corresponding to the reference signals in the first reference signal set, the sequences of the first sequence group/the second sequence group include the following sequences:

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

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

where j is an imaginary unit.

Further, when the sequences of the first sequence group/the second sequence group include the following sequences:

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

The sequence subgroup comprises:

first sequence subgroup: {1,1}, {1, -1, -1};

second sequence subgroup: {1, -1, -1}, {1, -1,1};

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, j,1, j }, {1, -j,1, -j };

second sequence subgroup: {1, j, -1, -j }, {1, -j, -1, j }.

It can be seen that, for example, the first sequence set comprises {1,1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}; the second sequence set includes {1, j,1, j }, {1, -j,1, -j }, {1, j, -1, -j }, {1, -j, -1, j }; each sequence in the first sequence set is orthogonal, and each sequence in the second sequence set is orthogonal. The first sequence group and the second sequence group are orthogonal with sequences in a partial sequence subgroup, and the sequences in the partial sequence subgroup are not orthogonal. Wherein the cross-correlation value of the non-orthogonal sequences is

Wherein, two N long non-orthogonal sequences { a } _n }、{b _n Cross-correlation value of } is

The specific sequence in the first scheme may be obtained by:

each sequence group obtains all sequences in the 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 sequence of four in the third sequence group can be obtained by the following formula, wherein the sequence is any one of {1,1}, {1, -1}, and the base sequence is {1,1 }:

Wherein the method comprises the steps of

Then

Each row of the first series represents a series of the first series, the latter representation being similar. The base sequence is {1, j }, the sequence of four of the second sequence set can be obtained by the following formula:

wherein the method comprises the steps of

Then

The following describes the specific application procedure of the sequence provided in the scheme one specifically: for example, when the number of transmission layers allocated to the terminal device is 2, it may be indicated by the first instruction to allocate reference signals corresponding to two sequences in the first sequence subgroup to the terminal device, or allocate reference signals corresponding to two sequences in the second sequence subgroup to the terminal device. And the effect of distributing the reference signals corresponding to the same sequence subgroup to the terminal equipment is achieved.

Specifically, taking the reference signal as an example of DMRS, in the process of mapping the DMRS sequence onto the REs, if the DMRS occupies one OFDM symbol, a mapping schematic diagram of the DMRS on one RB may be shown in fig. 9A. That is, the orthogonal code sequences of the reference signals correspond to the same RE, that is, the first term W (0), the second term W (1), the third term W (2), and the fourth term W (3) of the orthogonal code sequences of the reference signals correspond to the same RE, respectively. For another example, if the DMRS occupies two OFDM symbols, a mapping diagram of the DMRS on one RB may be as shown in fig. 10. Other RBs are similar and are not drawn one by one here.

Note that the order of placement of the individual orthogonal code sequences in fig. 9A and 10 is only one exemplary order. In the specific implementation process, different placement sequences can be adopted according to the needs. For example, when the DMRS occupies one OFDM symbol, the placement manner of the orthogonal code sequence of each reference signal may also be as shown in fig. 9B when the DMRS maps on one RB, and of course, other manners other than fig. 9A and 9B may also be adopted, which is not limited in this application.

In a second aspect, if the length n=8 of the orthogonal code sequence W (·) is equal to the length n=8, in the set formed by the orthogonal code sequences W (·) corresponding to the reference signals in the first reference signal set, the sequences of the first sequence group/the second sequence group include the following sequences:

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、{1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

further, when the sequences of the first sequence group/the second sequence group include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1};

The sequence subgroup comprises: first sequence subgroup: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}; second sequence subgroup: {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -1, -j,1};

the sequence subgroup comprises: first sequence subgroup: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }; second sequence subgroup: {1, -1, -j, -j, -1, j }, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j };

the sequence subgroup comprises: first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1}; second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }; second sequence subgroup: {1, -j, -1, j,1, j }, {1, j, -1, -j,1, -j }, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.

It can be seen that for example, there are two sequence sets, where the first sequence set comprises {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -1, -1, -j, j, -1}, {1, -j, j, -1, -1, -1, -j, -1}, {1, j, -1, -j, -j, -1, -j,1}; the second sequence set comprises {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j, {1, -1, -j, -j, -1, j }, {1, -j, j, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j }; each sequence in the first sequence set is orthogonal, and each sequence in the second sequence set is orthogonal. The first sequence group and the second sequence group are orthogonal with sequences in a partial sequence subgroup, and the sequences in the partial sequence subgroup are not orthogonal. Wherein the cross-correlation value of the non-orthogonal sequences is

The specific sequence obtaining mode in the scheme II can be as follows:

each sequence group obtains all sequences in the 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 The sequence of the base sequence is any one of {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}, and the base sequence is {1, -j, -j, -1}, and the sequence of eight can be obtained by the following formula:

Wherein the method comprises the steps of

Then

The base sequence is {1, -1, -j, -j }, the sequence of eight can be obtained by the following formula:

wherein the method comprises the steps of

Then

The base sequence is {1, 1}, the sequence of eight can be obtained by the following formula:

wherein the method comprises the steps of

Then

The base sequence is {1, -j, -1, -j }, the sequence of eight can be obtained by the following formula:

wherein the method comprises the steps of

Then

In a third aspect, if the length n=8 of the orthogonal code sequence W (·) is equal to the length n=8, in the set formed by the orthogonal code sequences W (·) corresponding to the reference signals in the first reference signal set, the sequences of the first sequence group/the second sequence group include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

the sequence subgroup comprises:

first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1};

second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

{1,1,1,-1,1,1,1,-1}、{1,-1,1,1,1,-1,1,1}、{1,1,-1,1,1,1,-1,1}、{1,-1,-1,-1,1,-1,-1,-1}、{1,1,1,-1,-1,-1,-1,1}、{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 sequence subgroup comprises:

First sequence subgroup: {1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1};

second sequence subgroup: {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 third scheme can be as follows:

each sequence group obtains all sequences in the 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 any one of {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}, the base sequence is {1, 1}, the sequence of eight of the sixth sequence group can be obtained by the following formula:

wherein the method comprises the steps of

Then

The base sequence is {1, -1}, and the sequence of eight in the sixth sequence group can be obtained by the following formula：

Wherein the method comprises the steps of

Then

The following describes the specific application procedure of the sequences provided by the second or third scheme: for example, when the number of transmission layers allocated to the terminal device is 4, it may be indicated by the first instruction to allocate reference signals corresponding to four sequences in the first sequence subgroup to the terminal device, or allocate reference signals corresponding to four sequences in the first sequence subgroup to the terminal device. And the effect of distributing the reference signals corresponding to the same sequence subgroup to the terminal equipment is achieved.

Specifically, taking the reference signal as an example of DMRS, in the process of mapping the DMRS sequence onto the REs, if the DMRS occupies two OFDM symbols, a mapping schematic diagram of the DMRS sequence on one RB may be shown in fig. 11. That is, the orthogonal code sequences of the reference signals correspond to the same RE, i.e., the first term W (0), the second term W (1), the third term W (2), the fourth term W (3), the fifth term W (4), the sixth term W (5), the seventh term W (6), and the eighth term W (7) of the orthogonal code sequences of the reference signals correspond to the same RE, respectively.

S302, 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, as shown in fig. 7, the method further includes:

s303, the terminal equipment sends at least one reference signal so that the network equipment receives 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

The corresponding orthogonal code sequence W (·). Then, after determining at least one reference signal according to the first instruction, the terminal device may select an orthogonal code sequence W (·) corresponding to the at least one reference signal from the stored orthogonal code sequences W (·), 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.

Of course, the terminal device may not store the reference signal sequences of the reference signals in the first reference signal set in advance

Corresponding orthogonal code sequence W (·) and directly generating the orthogonal code sequence W (·) corresponding to the at least one reference signal. 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.

In another 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 (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. 12, the method includes:

S701, the network equipment sends a first instruction.

S702, the terminal equipment receives a first instruction.

The content of the steps S701-702 may refer to the corresponding descriptions of the steps S301-S302, and the repetition is not repeated.

S703, the network device sends at least one reference signal, and the terminal device receives the at least one reference signal.

The same as S303, the reference signal sequences of the reference signals in the first reference signal set may be pre-stored in the network device

The corresponding orthogonal code sequence W (·). Then, after determining at least one reference signal to be transmitted, the network device may select an orthogonal code sequence W (·) corresponding to the at least one reference signal from the stored orthogonal code sequences W (·) 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 the first signal from the network device, which includes at least one reference signal, e.g. may evaluate a channel on which the reference signal is located, etc.

The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence group and the sequences in the second sequence group are different), the above method of the present application can provide more orthogonal code sequences than the prior art, and each orthogonal code sequence is orthogonal to at least other orthogonal code sequences in the belonging sequence group, and each orthogonal code sequence is orthogonal to a part of the orthogonal code sequences in the other sequence groups. Thus, the reference signal obtained by adopting the orthogonal code sequence can keep orthogonal with more reference signals, thereby reducing the interference among the reference signals of different layers.

For example, when the reference signal in the method provided in the present application is DMRS, taking the scenario shown in fig. 6 as an example, the orthogonal code sequence corresponding to DMRS in UE group 3 may be made to use the orthogonal code sequence in the same sequence subgroup in the same sequence group (for example, the orthogonal code sequence in the first sequence subgroup in the first sequence group), and the orthogonal code sequence corresponding to DMRS in UE group 4 may be made to use the orthogonal code sequence in the second sequence subgroup in the first sequence group, and the orthogonal code sequence corresponding to DMRS in UE group 5 may be made to use the orthogonal code sequence in the third sequence subgroup in the second sequence group (wherein the sequence in the third sequence subgroup is orthogonal to the sequence in the second sequence subgroup). Thus, the interference of the reference signals between different layers can be reduced while the number of transmission layers is increased.

It will be understood that in the embodiments of the present application, the receiving device and/or the transmitting device may perform some or all of the steps in the embodiments of the present application, these steps or operations are merely examples, and in the embodiments of the present application, other operations or variations of various operations may also be performed. Furthermore, the various steps may be performed in a different order presented in accordance with embodiments of the present application, and it is possible that not all of the operations in the embodiments of the present application may be performed. Embodiments provided herein may be related and may be referred to or cited with each other.

The above embodiments mainly describe the schemes provided by the embodiments of the present application from the perspective of interaction between devices. It should be understood that the receiving device or the sending device includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the corresponding functions. Those skilled in the art will readily appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the present application may divide functional modules of a device (network device or terminal device) according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. Optionally, the division of the modules in the embodiments of the present application is schematic, which is merely a logic function division, and other division manners may be actually implemented.

Fig. 13 is a schematic diagram illustrating a communication device 40 according to an embodiment of the present application. The communication means 40 may be a chip or a system on chip in a network device or a terminal device. The communication device 40 may be used to perform the function of transmitting the reference signal by the network apparatus or the terminal apparatus designed in the above embodiment. As one implementation, the communication device 40 includes:

a communication unit 401 for receiving or transmitting the first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, the length of the orthogonal code sequence W (& gt) is N, the value range of the independent variable is 0,1,2, …, N-1, t=mmod N, c (& gt) is a mask sequence, the value range of the independent variable is a non-negative integer,

The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signals of all the reference signals in the second reference signal groupSequence(s)

a reference signal transmitting unit 402, configured to generate and transmit the at least one reference signal.

Optionally, when the at least one reference signal includes two or more reference signals, orthogonal code sequences W (·) corresponding to the two or more reference signals belong to the same sequence subgroup.

Optionally, the reference signal combinations form a reference signal combination set, and the reference signal combination set satisfies:

the set of reference signal combinations is a proper subset of all possible reference signal combinations in the set of reference signals, and the set of reference signal combinations includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.

Optionally, when the frequency resources of the reference signals in the reference signal set include the same resource block, the reference signal sequence corresponding to the sequence of the first sequence group and the reference signal sequence corresponding to the sequence of the second sequence group are mapped on the same subcarrier in the same resource block.

In an alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, j,1, j }, {1, -j,1, -j }, {1, j, -1, -j }, {1, -j, -1, j }; where j is an imaginary unit.

In the alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1, 1}, {1, -1, -1}, {1, -1, -1}, {1, -1,1}; the sequence subgroup comprises: first sequence subgroup: {1, 1}, {1, -1, -1}; second sequence subgroup: {1, -1, -1}, {1, -1,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, j,1, j }, {1, -j,1, -j }, {1, j, -1, -j }, {1, -j, -1, j }; the sequence subgroup comprises: first sequence subgroup: {1, j,1, j }, {1, -j,1, -j }; second sequence subgroup: {1, j, -1, -j }, {1, -j, -1, j }.

In an alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }, {1, -1, -j, -j, -1, j, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j, -j }, {1, j, -j, -1, -j, j }; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }, {1, -j, -1, j, {1, j, -1, -j, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j };

In the alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}, {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -j,1}; the sequence subgroup comprises: first sequence subgroup: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1}; second sequence subgroup: {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -1, -j,1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }, {1, -1, -j, -j, -1, j, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j, -j }, {1, j, -j, -1, -j, j }; the sequence subgroup comprises: first sequence subgroup: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j }; second sequence subgroup: {1, -1, -j, -j, -1, j }, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j }; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; the sequence subgroup comprises: first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1}; second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set include the following sequences: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }, {1, -j, -1, j, {1, j, -1, -j, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }; the sequence subgroup comprises: first sequence subgroup: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j }; second sequence subgroup: {1, -j, -1, j,1, j }, {1, j, -1, -j,1, -j }, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.

In an alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set 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};

in the alternative, the sequences of the first sequence set/second sequence set include the following sequences: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1}, {1, -a sequence of 1, -1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; the sequence subgroup comprises: first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1}; second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1}; alternatively, the sequences of the first sequence set/second sequence set 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}; the sequence subgroup comprises: first sequence subgroup: {1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1}; second sequence subgroup: {1, -1, -1, -1,1}, {1, -1, -1, -1, -1}, {1, -1, -1, -1, -1}, {1, -1, -1, 1}.

Optionally, each reference signal in each reference signal combination is a demodulation reference signal DMRS; the first signaling is downlink control information DCI.

Fig. 14 is a schematic diagram of a communication device 50 according to an embodiment of the present application. The communication means 50 may be a chip or a system on chip in a network device or a terminal device. The communication device 50 may be used to perform the function of the network apparatus or the terminal apparatus designed in the above embodiment to receive the reference signal. As one implementation, the communication device 50 includes:

a communication unit 501, configured to receive or transmit a first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, the length of the orthogonal code sequence W (& gt) is N, the value range of the independent variable is 0,1,2, …, N-1, t=mmod N, c (& gt) is a mask sequence,

a reference signal receiving unit 502, configured to receive the at least one reference signal.

the reference signal combination set is a proper subset of all possible reference signal combinations in the reference signal set, and the reference signal combination set at least comprises various combination modes of reference signals corresponding to sequences in the same sequence subgroup.

It will be appreciated that the detailed description of the functions of each unit in the communication device 40 or the communication device 50 may refer to the description of the relevant steps of the method embodiment, and will not be repeated herein.

Fig. 15 shows a schematic diagram of the composition of a communication device 60. Wherein the communication device 60 includes: at least one processor 601, and at least one interface circuit 604. In addition, the communication device 60 may also include a communication line 602, a memory 603.

The processor 601 may be a general purpose central processing unit (central processing unit, CPU), micro-processor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the programs of the present application.

Communication line 602 may include a pathway to transfer information between the aforementioned components.

The interface circuit 604 uses any transceiver-like device for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), etc.

The memory 603 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disc storage, a compact disc storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor via communication line 602. The memory may also be integrated with the processor.

The memory 603 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled by the processor 601 to execute the instructions. The processor 601 is configured to execute computer-executable instructions stored in the memory 603, thereby implementing the communication method provided in the embodiment of the present application.

Illustratively, in some embodiments, the processor 601, when executing the instructions stored in the memory 603, causes the communication apparatus 60 to perform operations that the network device is required to perform as shown in fig. 7 or 12.

In other embodiments, the processor 601, when executing the instructions stored in the memory 603, causes the communication device 60 to perform the operations that the terminal equipment needs to perform as shown in fig. 7 or 12.

Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a particular implementation, the processor 601 may include one or more CPUs, such as CPU0 and CPU1 of FIG. 13, as an embodiment.

In a specific implementation, the apparatus 60 may include a plurality of processors, such as the processor 601 and the processor 607 in fig. 13, as an embodiment. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing, for example, meter data (computer program instructions).

In a specific implementation, the apparatus 60 may further include an output device 605 and an input device 606, as one embodiment. The output device 605 communicates with the processor 601 and may display information in a variety of ways. For example, the output device 605 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a Cathode Ray Tube (CRT) display device, or a projector (projector), or the like. The input device 606 is in communication with the processor 601 and may receive user input in a variety of ways. For example, the input device 606 may be a mouse, a keyboard, a touch screen device, a sensing device, or the like.

The embodiments of the present application also provide a computer readable storage medium having instructions stored therein that, when executed, perform the methods provided by the embodiments of the present application. Illustratively, when the instructions are executed, the operations that the network device needs to perform as shown in fig. 7 or fig. 12 are performed. Alternatively, when the instruction is executed, other operations that the terminal device needs to perform as shown in fig. 7 or fig. 12 are performed.

Embodiments of the present application also provide a computer program product comprising instructions. Which when executed on a computer, causes the computer to perform the methods provided by the embodiments of the present application. The computer may, for example, perform the operations required by the network device to execute as shown in fig. 7 or 12 when the computer program product containing instructions is run on the computer. Alternatively, the computer may perform other operations that the terminal device needs to perform as shown in fig. 7 or 12 when the computer program product containing instructions is run on the computer.

The embodiment of the application also provides a chip. The chip comprises a processing circuit and an interface; the processing circuit is configured to call from the storage medium and execute the computer program stored in the storage medium, so that the chip may execute the method provided in the embodiment of the present application.

The embodiment of the application also provides a communication system, which comprises a first communication device and a second communication device; wherein: a first communication device for performing the operation performed by the device for transmitting a reference signal in the above-described embodiment; and a second communication device for performing the operations performed by the device for receiving a reference signal in the above embodiments. For example, the first communication device is configured to perform operations that the terminal device in fig. 7 needs to perform, or to perform operations that the network device in fig. 12 performs; the second communication device is used to perform the operations that the network device in fig. 7 needs to perform, or to perform the operations performed by the terminal device in fig. 12.

The functions or acts or operations or steps and the like in the embodiments described above may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it 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 the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced 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 a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, 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 including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Although the present application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary illustrations of the present application as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the present application. It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to include such modifications and variations as well.

Claims

A method of communication, the method comprising:

receiving or transmitting a first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination form a reference signal set, and the reference signal set comprises at least two reference signal groups; in the at least two reference signal groups Reference signal sequence for each reference signal
The method meets the following conditions:

wherein r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, t=mmod N,
the length of the orthogonal code sequence W (-) is N, the value range of the independent variable is 0,1,2 and …, N-1 and c (-) are mask sequences, and the value range of the independent variable is a non-negative integer;

any two reference signal groups in the at least two reference signal groups meet the following conditions: reference signal sequences of all reference signals in the first reference signal group
The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group
The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; any one of the first set of sequences and any one of the second set of sequences are different;

wherein the sequence c (-) corresponding to the first sequence set is different from the sequence c (-) corresponding to the second sequence set; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

The at least one reference signal is generated and transmitted.
The method of claim 1, wherein when the at least one reference signal comprises two or more reference signals, orthogonal code sequences W (·) corresponding to the two or more reference signals belong to a same sequence subgroup.
The method according to claim 1 or 2, wherein the reference signal combinations constitute a reference signal combination set, the reference signal combination set satisfying:

the set of reference signal combinations is a proper subset of all possible reference signal combinations in the set of reference signals, and the set of reference signal combinations includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.
A method according to any of claims 1-3, characterized in that when the frequency resources of the reference signals in the reference signal set comprise the same resource block, the reference signal sequences corresponding to the sequences of the first sequence group and the reference signal sequences corresponding to the sequences of the second sequence group are mapped on the same sub-carriers in the same resource block.
The method of any one of claims 1-4, wherein the sequences of the first sequence set/second sequence set 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 sequence set/second sequence set include the following sequences:

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

where j is an imaginary unit.
The method of claim 5, wherein the step of determining the position of the probe is performed,

the sequences of the first sequence set/second sequence set include the following sequences:

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

the sequence subgroup comprises:

first sequence subgroup: {1, 1}, {1, -1, -1};

second sequence subgroup: {1, -1, -1}, {1, -1,1};

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

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, j,1, j }, {1, -j,1, -j };

second sequence subgroup: {1, j, -1, -j }, {1, -j, -1, j }.
The method of any one of claims 1-4, the sequences of the first/second sequence sets comprising the following sequences:

{1,-j,-j,-1,1,-j,-j,-1}、{1,j,-j,1,1,j,-j,1}、{1,-j,j,1,1,-j,j,1}、{1,j,j,-1,1,j,j,-1}、{1,-j,-j,-1,-1,j,j,1}、{1,j,-j,1,-1,-j,j,-1}、{1,-j,j,1,-1,j,-j,-1}、{1,j,j,-1,-1,-j,-j,1}；

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

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、{1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

alternatively, the sequences of the first sequence set/second sequence set 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}；

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

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}。
the method of claim 7, wherein the sequences of the first sequence set/second sequence set comprise the following sequences:

{1,-j,-j,-1,1,-j,-j,-1}、{1,j,-j,1,1,j,-j,1}、{1,-j,j,1,1,-j,j,1}、{1,j,j,-1,1,j,j,-1}、 {1,-j,-j,-1,-1,j,j,1}、{1,j,-j,1,-1,-j,j,-1}、{1,-j,j,1,-1,j,-j,-1}、{1,j,j,-1,-1,-j,-j,1}；

the sequence subgroup comprises:

First sequence subgroup: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1};

second sequence subgroup: {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -1, -j,1};

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

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、{1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j };

second sequence subgroup: {1, -1, -j, -j, -1, j }, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j };

alternatively, the sequences of the first sequence set/second sequence set 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}；

the sequence subgroup comprises:

first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1};

second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

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

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j };

Second sequence subgroup: {1, -j, -1, j,1, j }, {1, j, -1, -j,1, -j }, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.
The method of any one of claims 1-4, the sequences of the first/second sequence sets comprising 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}；

alternatively, the sequences of the first sequence set/second sequence set 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}。
the method of claim 9, wherein the sequences of the first sequence set/second sequence set comprise 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}；

the sequence subgroup comprises:

first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1};

second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

alternatively, the sequences of the first sequence set/second sequence set 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}；

the sequence subgroup comprises:

first sequence subgroup: {1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1};

second sequence subgroup: {1, -1, -1, -1,1}, {1, -1, -1, -1, -1}, {1, -1, -1, -1, -1}, {1, -1, -1, 1}.
The method according to any of claims 1-10, wherein each reference signal in each reference signal combination is a demodulation reference signal, DMRS;

the first signaling is downlink control information DCI.
A method of communication, the method comprising:

receiving or transmitting a first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one parameterA test signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, t=mmod N,
w (·) represents an orthogonal code sequence of length N, and the range of the independent variable values is 0,1, …, N-1
c (·) is a mask sequence, and the range of the argument value is a non-negative integer

Any two reference signal groups in the at least two reference signal groups meet the following conditions: reference signal sequences of all reference signals in the first reference signal group
The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group
The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; any one of the first set of sequences and any one of the second set of sequences are different;

wherein the sequence c (-) corresponding to the first sequence set is different from the sequence c (-) corresponding to the second sequence set; the sequence r (m) corresponding to the first sequence group is identical to the sequence r (m) corresponding to the second sequence group;

the at least one reference signal is received.
The method of claim 12, wherein when the at least one reference signal comprises two or more reference signals, orthogonal code sequences W (·) corresponding to the two or more reference signals belong to a same sequence subgroup.
The method according to claim 12 or 13, wherein each reference signal combination constitutes a reference signal combination set, the reference signal combination set satisfying:

the set of reference signal combinations is a proper subset of all possible reference signal combinations in the set of reference signals, and the set of reference signal combinations includes at least various combinations of reference signals corresponding to sequences in the same sequence subgroup.
The method according to any of claims 12-14, wherein when the frequency resources of the reference signals in the reference signal set comprise the same resource block, the reference signal sequences corresponding to the sequences of the first sequence group and the reference signal sequences corresponding to the sequences of the second sequence group are mapped on the same subcarrier in the same resource block.
The method according to any one of claims 12-15, wherein the sequences of the first sequence set/second sequence set 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 sequence set/second sequence set include the following sequences:

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

where j is an imaginary unit.
The method of claim 16, wherein the step of determining the position of the probe comprises,

the sequences of the first sequence set/second sequence set include the following sequences:

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

The sequence subgroup comprises:

first sequence subgroup: {1, 1}, {1, -1, -1};

second sequence subgroup: {1, -1, -1}, {1, -1,1};

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

{1,j,1,j}、{1,-j,1,-j}、{1,j,-1,-j}、{1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, j,1, j }, {1, -j,1, -j };

second sequence subgroup: {1, j, -1, -j }, {1, -j, -1, j }.
The method according to any one of claims 12-15, the sequences of the first/second sequence set comprising the following sequences:

{1,-j,-j,-1,1,-j,-j,-1}、{1,j,-j,1,1,j,-j,1}、{1,-j,j,1,1,-j,j,1}、{1,j,j,-1,1,j,j,-1}、{1,-j,-j,-1,-1,j,j,1}、{1,j,-j,1,-1,-j,j,-1}、{1,-j,j,1,-1,j,-j,-1}、{1,j,j,-1,-1,-j,-j,1}；

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

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、{1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

alternatively, the sequences of the first sequence set/second sequence set 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}；

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

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}；
the method of claim 18, wherein the sequences of the first sequence set/second sequence set comprise the following sequences:

{1,-j,-j,-1,1,-j,-j,-1}、{1,j,-j,1,1,j,-j,1}、{1,-j,j,1,1,-j,j,1}、{1,j,j,-1,1,j,j,-1}、{1,-j,-j,-1,-1,j,j,1}、{1,j,-j,1,-1,-j,j,-1}、{1,-j,j,1,-1,j,-j,-1}、{1,j,j,-1,-1,-j,-j,1}；

the sequence subgroup comprises:

first sequence subgroup: {1, -j, -j, -1, -j, -j, -1}, {1, j, -j,1, j, -j,1}, {1, -j, j,1, -j, j,1}, {1, j, -1, j, -1};

second sequence subgroup: {1, -j, -j, -1, -1, j,1}, {1, j, -j,1, -1, -j, j, -1}, {1, -j, j,1, -1, j, -j, -1}, {1, j, -1, -1, -j,1};

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

{1,-1,-j,-j,1,-1,-j,-j}、{1,1,-j,j,1,1,-j,j}、{1,-1,j,j,1,-1,j,j}、{1,1,j,-j,1,1,j,-j}、{1,-1,-j,-j,-1,1,j,j}、{1,1,-j,j,-1,-1,j,-j}、{1,-1,j,j,-1,1,-j,-j}、{1,1,j,-j,-1,-1,-j,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, -1, -j, -j,1, -1, -j, -j }, {1, -j, j,1, -j, j }, {1, -1, j,1, -1, j }, {1, j, -j,1, j, -j };

second sequence subgroup: {1, -1, -j, -j, -1, j }, {1, -j, j, -1, -1, j, -j }, {1, -1, j, -1, -j, -j }, {1, j, -j, -1, -1, -j, j };

alternatively, the sequences of the first sequence set/second sequence set 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}；

the sequence subgroup comprises:

first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1};

second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

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

{1,-j,-1,-j,1,-j,-1,-j}、{1,j,-1,j,1,j,-1,j}、{1,-j,1,j,1,-j,1,j}、{1,j,1,-j,1,j,1,-j}、{1,-j,-1,-j,-1,j,1,j}、{1,j,-1,j,-1,-j,1,-j}、{1,-j,1,j,-1,j,-1,-j}、{1,j,1,-j,-1,-j,-1,j}；

the sequence subgroup comprises:

first sequence subgroup: {1, -j, -1, -j,1, -j, -1, -j }, {1, j, -1, j, -1, j }, {1, -j,1, -j,1, j }, {1, j,1, -j,1, -j };

second sequence subgroup: {1, -j, -1, j,1, j }, {1, j, -1, -j,1, -j }, {1, -j,1, j, -1, -j }, {1, j,1, -j, -1, j }.
The method according to any one of claims 12-15, wherein the sequences of the first sequence set/second sequence set comprise 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}；

Alternatively, the sequences of the first sequence set/second sequence set 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}。
the method of claim 20, wherein the sequences of the first sequence set/second sequence set comprise 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}；

the sequence subgroup comprises:

first sequence subgroup: {1,1,1,1,1,1,1,1}, {1, -1, -1}, {1, -1, -1, -1}, {1, -1, -1,1};

second sequence subgroup: {1, -1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1};

alternatively, the sequences of the first sequence set/second sequence set 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}；

the sequence subgroup comprises:

first sequence subgroup: {1, -1, -1}, {1, -1, -1,1}, {1, -1, -1, -1, -1};

second sequence subgroup: {1, -1, -1, -1,1}, {1, -1, -1, -1, -1}, {1, -1, -1, -1, -1}, {1, -1, -1, 1}.
The method according to any of claims 12-21, wherein each reference signal in each reference signal combination is a demodulation reference signal, DMRS;

the first signaling is downlink control information DCI.
A communication device, the communication device comprising:

The communication unit is used for receiving or transmitting the first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination 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 r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, t=mmod N,
w (·) represents an orthogonal code sequence of length N, and the range of the independent variable values is 0,1, …, N-1
c (·) is a mask sequence, and the value range of the independent variable is a non-negative integer;

any two of the at least two reference signal groupsA reference signal group satisfying the following conditions: reference signal sequences of all reference signals in the first reference signal group
The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group
The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroups; sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence set and the sequences in the second sequence set are different;

wherein the sequence c (-) corresponding to the first sequence set is different from the sequence c (-) corresponding to the second sequence set; 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 reference signal transmitting unit is used for generating and transmitting the at least one reference signal.
A communication device, the communication device comprising:

the communication unit is used for receiving or transmitting the first signaling; wherein, the first signaling includes a preset domain segment indicating a first reference signal combination; the first reference signal combination comprises at least one reference signal; wherein, different values of the preset domain segment included in the first signaling respectively correspond to each reference signal combination; all the reference signals included in each reference signal combination form a reference signal set, and the reference signal set comprises at least two reference signal groups; said at least Reference signal sequences for each reference signal in two reference signal groups
The method meets the following conditions:

wherein r (m) is a pseudo-random sequence, m is a non-negative integer, A is a non-zero complex constant, t=mmod N,
w (·) represents an orthogonal code sequence of length N, and the range of the independent variable values is 0,1, …, N-1
c (·) is a mask sequence, and the value range of the independent variable is a non-negative integer;

any two reference signal groups in the at least two reference signal groups meet the following conditions: reference signal sequences of all reference signals in the first reference signal group
The corresponding orthogonal code sequences W (& gt) form a first sequence group, and the reference signal sequences of all the reference signals in the second reference signal group
The corresponding orthogonal code sequences W (·) constitute a second sequence set; each sequence in the first sequence group is orthogonal; each sequence in the second sequence group is orthogonal; the first sequence group comprises at least two sequence subgroups; the second sequence group comprises at least two sequence subgroupsThe method comprises the steps of carrying out a first treatment on the surface of the Sequences in a subset of sequences in the first sequence set are orthogonal to sequences in a subset of sequences in the second sequence set; the sequences in the first sequence set and the sequences in the second sequence set are different;

Wherein the sequence c (-) corresponding to the first sequence set is different from the sequence c (-) corresponding to the second sequence set; 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 reference signal receiving unit is used for receiving the at least one reference signal.
A communication device comprising at least one processor and interface circuitry, the at least one processor being configured to communicate with other devices via the interface circuitry to perform the communication method of any of claims 1-11.
A communication device comprising at least one processor and interface circuitry, the at least one processor being configured to communicate with other devices via the interface circuitry to perform the communication method of any of claims 12-22.
A chip, wherein the chip comprises a processing circuit and an interface; the processing circuit is configured to call from a storage medium and execute a computer program stored in the storage medium to perform the communication method according to any one of claims 1-11 or to perform the communication method according to any one of claims 12-22.
A computer-readable storage medium having instructions stored therein; when the instructions are run, a communication method according to any of claims 1-11 is performed, or a communication method according to any of claims 12-22 is performed.
A computer program product comprising instructions; the instructions, when run on a computer, cause the computer to perform the communication method of any of claims 1-11 or cause the computer to perform the communication method of any of claims 12-22.
A communication system, comprising: a first communication device and a second communication device; wherein:

the first communication device for performing the method of any of claims 1-11;

the second communication device for performing the method of any of claims 12-22.