CN105519007B - An information transmission method, device and system - Google Patents

Abstract

The embodiment of the invention discloses a kind of information transferring method, equipment and systems, are related to the communications field, are able to solve the problem of signal interference that user equipment generates other users equipment in communication network is affected to information transmission quality.The specific scheme is that first network equipment obtains the first channel quality information and second channel quality information, precoding vector is determined according to the first channel quality information and second channel quality information, information is sent at least one user equipment according to precoding vector, alternatively, precoding vector is sent at least one user equipment and receives the information that at least one user equipment is sent according to precoding vector.The present invention is transmitted for information.

Description

An information transmission method, device and system

technical field

Embodiments of the present invention relate to the field of communications, and in particular, to an information transmission method, device, and system.

Background technique

With the development of communication technology, in order to meet the increasing demands of users for communication services, improving the capacity of information transmission in communication networks has become a very critical issue.

In the prior art, taking the Long Term Evolution (LTE) system as an example, technologies such as Virtual Multiple Input Multiple Output (VMIMO) and Coordinated Multiple Points (CoMP) can be used to improve the The capacity of information transmission in a communication network. In VMIMO technology, multiple user equipments transmit information in the same physical resource; in CoMP technology, for a certain user equipment, the information transmitted by the user is combined using the antenna of the cell and the antenna of the same frequency adjacent cell. take over.

However, whether it is the VMIMO technology or the CoMP technology, while improving the information transmission capacity in the communication network, signal interference to other user equipments affects the information transmission quality of the communication network.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide an information transmission method, device, and system, which can solve the problem that signal interference generated by user equipment to other user equipment in a communication network has a greater impact on information transmission quality.

To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a first network device, including:

An acquiring unit, configured to acquire first channel quality information and second channel quality information, where the first network device belongs to a first cell, and the first channel quality information is used to indicate that at least one user equipment is in the first cell channel quality, where the second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell;

an encoding unit, configured to determine a precoding vector according to the first channel quality information and the second channel quality information obtained by the obtaining unit;

a transceiver unit, configured to send information to the at least one user equipment according to the precoding vector generated by the encoding unit;

Or, the transceiver unit is configured to send the precoding vector generated by the encoding unit to the at least one user equipment and receive information sent by the at least one user equipment according to the precoding vector.

Combined with the first aspect, in the first possible implementation manner,

The coding unit is specifically configured to calculate the precoding vector by substituting the matrix A and the matrix B into the first formula, where the matrix A is the channel quality estimation matrix of the at least one user equipment in the first cell, and the The matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell;

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤1.

In combination with the first possible implementation manner of the first aspect, in the second possible implementation manner,

The precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), N is a positive integer;

The coding unit is specifically used to set the code word f _n (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, f _n is a complex number, and the set code word f _{n is} substituted into the first formula to calculate the maximum power estimation value U, and the precoding vector F is composed of the codeword f _n that makes the maximum power estimation value U take the largest value.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner, the at least one user equipment includes a first user equipment;

The first channel quality information includes

Wherein, A is the channel quality estimation matrix of the first user equipment in the first cell, and H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number;

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the reception of a single cell. The number of antennas and M≥N, i is the subcarrier number;

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents The precoding vector of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell, where f _ni is a complex number.

With reference to the first possible implementation manner of the first aspect, in a fourth possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment;

the first channel quality information packet

Wherein, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, H _nm,01,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

The precoding vector is F=[f _01, if _02,i ...f _0N, if _11, if _12,i ...f _1N,i ] ^T (0<|f _01,i |...|f _{0N , i} |, |f _{11, i} | f _{1N, i} |≤1), f _0n,i (1≤n≤N) represents the nth transmit antenna of the first user equipment in the first cell The precoding vector on the ith subcarrier, f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell , f _0n,i , f _1n,i are all complex numbers.

With reference to any one of the first to fourth possible implementations of the first aspect, in a fifth possible implementation,

The obtaining unit includes a first receiving subunit, configured to receive a reference pilot signal sent by the at least one user equipment;

The obtaining unit further includes an estimation subunit, configured to estimate that the at least one user equipment is in the first cell according to the reference pilot signal sent by the at least one user equipment received by the first receiving subunit power to transmit information and generate the first channel quality information.

With reference to any one of the first to fifth possible implementations of the first aspect, in the sixth possible implementation,

The acquiring unit further includes a second receiving subunit, configured to receive the second channel quality information sent by a second network device, where the second network device belongs to the second cell.

In a second aspect, an embodiment of the present invention provides a second network device, including:

a receiving unit, configured to receive a reference pilot signal sent by at least one user equipment;

an estimation unit, configured to estimate the received power of the at least one user in the second cell according to the reference pilot signal received by the receiving unit and generate second channel quality information;

a sending unit, configured to send the second channel quality information to a first network device, so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, and the second channel quality information The channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell, the second network device belongs to the second cell, and the first channel quality information is used to indicate that the at least one user equipment is in the second cell. Channel quality of the first cell, where the first network device belongs to the first cell.

With reference to the second aspect, in a first possible implementation manner, the at least one user equipment includes a first user equipment,

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number.

With reference to the second aspect, in a second possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment,

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, and i is the subcarrier number.

In a third aspect, an embodiment of the present invention provides a first network device, including a processor, a memory, a bus, a transmitter, and a receiver, and the processor, the memory, the transmitter, and the receiver pass through the The buses are connected to each other;

The processor is configured to acquire first channel quality information and second channel quality information, the first network device belongs to a first cell, and the first channel quality information is used to indicate that at least one user equipment is in the the channel quality of the first cell, and the second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell;

the processor, further configured to determine a precoding vector according to the first channel quality information and the second channel quality information;

The processor is further configured to send information to the at least one user equipment through the transmitter according to the precoding vector, or the processor is further configured to send the precoding vector through the transmitter sending to the at least one user equipment and receiving, by the receiver, the information sent by the at least one user equipment according to the precoding vector.

Combined with the third aspect, in the first possible implementation,

The processor is specifically configured to calculate the precoding vector by substituting the matrix A and the matrix B into the first formula, where the matrix A is the channel quality estimation matrix of the at least one user equipment in the first cell, and the The matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell;

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤1.

With reference to the first possible implementation manner of the third aspect, in the second possible implementation manner, the precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |,| f ₂ |…|f _N |≤1), N is a positive integer;

The processor is specifically used to set the code word f _n (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, f _n is a complex number, and the set code word f _{n is} substituted into the first formula to calculate the maximum power estimation value U, and the precoding vector F is composed of the codeword f _n that makes the maximum power estimation value U take the largest value.

With reference to the first possible implementation manner of the third aspect, in a third possible implementation manner, the at least one user equipment includes a first user equipment;

The first channel quality information includes

Wherein, A is the channel quality estimation matrix of the first user equipment in the first cell, and H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number;

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the reception of a single cell. The number of antennas and M≥N, i is the subcarrier number;

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents The precoding vector of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell, where f _ni is a complex number.

With reference to the first possible implementation manner of the third aspect, in a fourth possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment;

the first channel quality information packet

Wherein, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, H _nm,01,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

The precoding vector is

F=[f _{01, i} f _{02, i} ... f _{0N, i} f _{11, i} f _{12, i} ... f _{1N, i} ] ^T , (0 < _{f01, i} |...|f _{0N, i} |, |f _{11 , i} |...|f _{1N, i} |≤1), f _0n,i (1≤n≤N) indicates that the first user equipment is on the i-th subcarrier of the n-th transmit antenna of the first cell , f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _0n,i , f _{1n, i} are complex numbers.

With reference to any one of the fourth possible implementation manners of the third aspect to the third aspect, in the fifth possible implementation manner,

The processor is specifically configured to receive, through the receiver, a reference pilot signal sent by the at least one user equipment, and estimate, according to the reference pilot signal sent by the at least one user equipment, that the at least one user equipment is at The power of the transmission information in the first cell and generate the first channel quality information.

With reference to any one of the fifth possible implementation manners of the third aspect to the third aspect, in the sixth possible implementation manner,

The processor is specifically configured to receive, through the receiver, the second channel quality information sent by a second network device, where the second network device belongs to a second cell.

In a fourth aspect, an embodiment of the present invention provides a second network device, including a processor, a memory, a bus, a transmitter, and a receiver. The processor, the memory, the transmitter, and the receiver pass through the The buses are connected to each other;

Wherein, the processor is configured to receive, through the receiver, a reference pilot signal sent by at least one user equipment;

The processor is further configured to estimate the received power of the at least one user in the second cell according to the reference pilot signal and generate second channel quality information;

The processor is further configured to send the second channel quality information to a first network device through the transmitter, so that the first network device determines according to the second channel quality information and the first channel quality information A precoding vector, the second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell, the second network device belongs to the second cell, and the first channel quality information is used to indicate the channel quality of the at least one user equipment in the first cell, where the first network equipment belongs to the first cell.

With reference to the fourth aspect, in a first possible implementation manner, the at least one user equipment includes a first user equipment,

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number.

With reference to the fourth aspect, in a second possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment,

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, and i is the subcarrier number.

In a fifth aspect, an embodiment of the present invention provides an information transmission method, including:

The first network device acquires first channel quality information, the first network device belongs to a first cell, and the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell;

acquiring, by the first network device, second channel quality information, where the second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell;

The first network device determines a precoding vector according to the first channel quality information and the second channel quality information;

The first network device sends information to the at least one user equipment according to the precoding vector, or the first network device sends the precoding vector to the at least one user equipment and receives the at least one user equipment Information sent by the user equipment according to the precoding vector.

Combined with the fifth aspect, in the first possible implementation manner,

The first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including:

The first network device calculates the precoding vector by substituting the matrix A and the matrix B into the first formula, where the matrix A is a channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is the channel quality estimation matrix of the at least one user equipment in the second cell;

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤1.

In combination with the first possible implementation manner of the fifth aspect, in the second possible implementation manner,

The precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), N is a positive integer;

The first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including:

The first network device sets the codeword f _n (1≤n≤N) according to a preset step size in the interval (0,1], where n is a positive integer, and f _n is a complex number;

The set codeword _{fn is} substituted into the first formula to calculate the maximum power estimation value U, and the precoding vector F is composed of the codeword _fn that makes the maximum power estimation value U the largest value.

With reference to the first possible implementation manner of the fifth aspect, in a third possible implementation manner, the at least one user equipment includes a first user equipment;

The first channel quality information includes

Wherein, A is the channel quality estimation matrix of the first user equipment in the first cell, and H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number;

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the reception of a single cell. The number of antennas and M≥N, i is the subcarrier number;

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents The precoding vector of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell, where f _ni is a complex number.

With reference to the first possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment;

the first channel quality information packet

Wherein, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, H _nm,01,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, i is the subcarrier number;

The precoding vector is

F=[f _{01, i} f _{02, i} ... f _{0N, i} f _{11, i} f _{12, i} ... f _{1N, i} ] ^T , (0<|f _{01, i} |...|f _{0N, i} |, | f _{11, i} |...|f _{1N, i} |≤1), f _0n,i (1≤n≤N) represents the i-th sub of the n-th transmit antenna of the first user equipment in the first cell Precoding vector on the carrier, f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _{0n ,i} , f _1n,i are all complex numbers.

With reference to any one of the fourth possible implementation manners of the fifth aspect to the fifth aspect, in a fifth possible implementation manner, the first network device acquiring the first channel quality information includes:

receiving, by the first network device, a reference pilot signal sent by the at least one user equipment;

The first network device estimates the power of the at least one user equipment to transmit information in the first cell according to the reference pilot signal sent by the at least one user equipment, and generates the first channel quality information.

With reference to any one of the fifth possible implementation manners of the fifth aspect to the fifth aspect, in a sixth possible implementation manner, the first network device acquiring the second channel quality information includes:

The first network device receives the second channel quality information sent by the second network device, where the second network device belongs to the second cell.

In a sixth aspect, an embodiment of the present invention provides an information transmission method, including:

The second network device receives a reference pilot signal sent by at least one user equipment;

The second network device estimates the received power of the at least one user in the second cell according to the reference pilot signal and generates second channel quality information;

The second network device sends the second channel quality information to the first network device, so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, and the first network device determines a precoding vector according to the second channel quality information and the first channel quality information. The second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell, the second network device belongs to the second cell, and the first channel quality information is used to indicate that the at least one user equipment is in the second cell. the channel quality of the first cell, and the first network device belongs to the first cell.

With reference to the sixth aspect, in a first possible implementation manner, the at least one user equipment includes a first user equipment,

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, and H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, and M is the receive antenna of a single cell number and M≥N, i is the subcarrier number.

With reference to the sixth aspect, in a second possible implementation manner, the at least one user equipment includes a first user equipment and a second user equipment,

the second channel quality information packet

Wherein, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n ≤N, 1≤n≤M and n, m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell , N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥2N, and i is the subcarrier number.

In a seventh aspect, an embodiment of the present invention provides a wireless network system, including a first network device, a second network device, and at least one user equipment;

The first network device is the first network device described in the first aspect or any possible implementation manner of the first aspect, and the second network device is the second aspect or any one of the second aspect the second network device described in a possible implementation manner;

Alternatively, the first network device is the first network device described in the third aspect or any possible implementation manner of the third aspect, and the second network device is the fourth aspect or any one of the fourth aspect The second network device described in this possible implementation manner.

Embodiments of the present invention provide an information transmission method, device, and system, in which first channel quality information and second channel quality information are acquired through a first network device, and precoding is determined according to the first channel quality information and the second channel quality information vector, sending information to at least one user equipment according to the precoding vector, or sending the precoding vector to at least one user equipment and receiving information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic flowchart of an information transmission method provided by an embodiment of the present invention;

2 is a schematic flowchart of another information transmission method provided by an embodiment of the present invention;

3 is a schematic diagram of information interaction of an information transmission method provided by another embodiment of the present invention;

FIG. 4 is a schematic diagram of a network structure of an application scenario provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of a network structure of another application scenario provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a first network device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a second network device according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a first network device according to another embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a second network device according to another embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a wireless network system according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides an information transmission method, which is applied to a first network device. Referring to FIG. 1 , the method includes the following steps:

101. The first network device acquires first channel quality information.

The first network device belongs to the first cell, and the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell.

102. The first network device acquires second channel quality information.

The second channel quality information is used to indicate the channel quality of at least one user equipment in the second cell.

Here, steps 101 and 102 have no sequential relationship.

103. The first network device determines a precoding vector according to the first channel quality information and the second channel quality information.

Optionally, the first channel quality information includes the channel quality estimation matrix A of at least one user equipment in the first cell, the second channel quality information includes the channel quality estimation matrix B of at least one user equipment in the second cell, and the matrix A is equal to The matrix B is substituted into the first formula to obtain the precoding vector.

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤I. tr[] is to find the trace of the matrix, [] ^H is to perform the transposed conjugate transformation of the matrix, || || _F is to find the norm of the matrix, AF represents the multiplication of the matrix A and the vector F, and BF represents the matrix B and the vector Multiply F.

Specifically, optionally, the precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), N is a positive integer, preferably, N is the number of transmit antennas of a single user equipment, and f _n (1≤n≤N) represents a precoding vector of at least one user equipment on the nth transmit antenna of the first cell. The first network device sets the code word f _n (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, and f _n is a complex number. Substitute the set code word f _n into the first When the formula calculates the estimated value U of the sum of the maximum received powers of the first network device on I subcarriers when the adjacent cell interference is minimum, the codeword _fn with the maximum value of U will be formed into a precoding vector F, preferably, the subcarrier The carriers are grouped, and the subcarriers in the same group use the same precoding vector, which can reduce the time for calculating U.

Here, because matrix A represents the channel quality estimation matrix of at least one user's information transmission in the first cell, and matrix B represents the channel quality estimation matrix of at least one user's information transmission in the second cell, the greater the power indicated by matrix B, It means that the interference of at least one user to other user equipments in the second cell is greater during information transmission. Therefore, the received power of the channel indicated by matrix A is made as large as possible, and the received power of the channel indicated by matrix B is made as small as possible. It can be ensured that when at least one user transmits information, the transmission quality is high and the interference to other user equipment is small.

104. The first network device sends information to at least one user equipment according to the precoding vector, or the first network device sends the precoding vector to at least one user equipment and receives information sent by the at least one user equipment according to the precoding vector.

Optionally, the first network device may also send the precoding vector to the second network device, so that the second network device can adjust the information transmission power of at least one user equipment in the second cell according to the precoding vector and the received reference pilot signal. Make the next estimate.

In the information transmission method provided by the embodiments of the present invention, the first channel quality information and the second channel quality information are acquired through the first network device, the precoding vector is determined according to the first channel quality information and the second channel quality information, and the precoding vector is determined according to the first channel quality information and the second channel quality information. Send information to at least one user equipment, or send a precoding vector to at least one user equipment and receive information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

Corresponding to the embodiment corresponding to FIG. 1 , an embodiment of the present invention provides another information transmission method, which is applied to a second network device. Referring to FIG. 2 , the method includes the following steps:

201. A second network device receives a reference pilot signal sent by at least one user equipment.

Optionally, the sequence and transmission power of the reference pilot signal may be configured by the high-level network for at least one user equipment.

202. The second network device estimates the received power of at least one user in the second cell according to the reference pilot signal, and generates second channel quality information.

Optionally, the second network device may estimate the received power of the at least one user in the second cell according to the reference pilot signal and the precoding vector of the at least one user equipment at the previous moment. Further optionally, the second network device periodically estimates the received power of at least one user equipment in the second cell, and the precoding vector of at least one user equipment at a previous moment can be used to estimate the received power at this moment, and this After the received power at a moment generates the second channel quality information and sends it to the first network device, at least one precoding vector of the user equipment at this moment can be generated. Certainly, the period during which the second network device estimates the received power of the at least one user equipment in the second cell may be determined according to specific conditions, which is not limited in the present invention.

203. The second network device sends the second channel quality information to the first network device.

Optionally, the second network device sends the second channel quality information to the first network device so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, and the second channel quality information is used to indicate at least The channel quality of one user equipment in the second cell, the second network device belongs to the second cell, the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell, and the first network device belongs to the first cell.

Optionally, after sending the second channel quality information to the first network device, the second network device may also receive a precoding vector sent by the first network device, and the second network device estimates the downlink according to the reference pilot signal and the precoding vector. The received power of at least one user in the second cell at a moment and the second channel quality information is generated.

In the information transmission method provided by the embodiments of the present invention, the second channel quality information is acquired through the second network device, and the second channel quality information is sent to the first network device, so that the first network device can obtain the second channel quality information according to the first channel quality information and the first network device. Second, the channel quality information determines the precoding vector, and receives the precoding vector sent by the first network device. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the signal interference caused by the user equipments to other user equipments in the communication network to the information transmission quality can be solved. high-impact issues.

Based on the above embodiments corresponding to FIG. 1 and FIG. 2 , another embodiment of the present invention provides an information transmission method, which is applied to a first network device, a second network device, and at least one user equipment. Optionally, the first network device The device belongs to the first cell, the second network device belongs to the second cell, the first cell is a serving cell of at least one user equipment, and the second cell is a neighboring cell of at least one user equipment. The second network device may be a base station, and as shown in FIG. 3 , it includes the following steps:

301. At least one user equipment sends a reference pilot signal to a first network device and a second network device.

302. The first network device generates first channel quality information.

Optionally, after receiving the reference pilot signal sent by the at least one user equipment, the first network device may estimate the receive power of the at least one user equipment in the first cell according to the reference pilot signal sent by the at least one user equipment, and generate a first Channel quality information.

Optionally, referring to the description of step 202 in the embodiment corresponding to FIG. 2 , the first network device may also estimate, according to the reference pilot signal sent by at least one user equipment and the precoding vector at the previous moment, that at least one user equipment is in the first The received power in the cell.

303. The first network device receives the second channel quality information sent by the second network device.

Optionally, after receiving the reference pilot signal sent by the at least one user equipment, the second network device estimates the information transmission power of the at least one user equipment in the second cell according to the reference pilot signal sent by the at least one user equipment, and generates a second network device. Channel quality information.

Optionally, the second network device may also estimate the received power of the at least one user equipment in the second cell according to the reference pilot signal sent by the at least one user equipment and the precoding vector at the previous moment.

304. The first network device determines a precoding vector according to the first channel quality information and the second channel quality information.

Specifically, optionally, the first network device calculates a precoding vector by substituting matrix A and matrix B into a first formula, where matrix A is a channel quality estimation matrix of at least one user equipment in the first cell, and matrix B is a channel quality estimation matrix of at least one user equipment in the first cell. The channel quality estimation matrix of the second cell.

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤I. Specifically, tr[] is to find the trace of the matrix, [] ^H is to perform the transpose conjugate transformation of the matrix, || || _F is to find the norm of the matrix, AF represents the multiplication of the matrix A and the vector F, and BF represents the matrix B is multiplied by the vector F.

Further optional, precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), N is a positive integer, preferably, N is the number of transmit antennas of a single user equipment, and f _n (1≤n≤N) represents a precoding vector of at least one user equipment on the nth transmit antenna of the first cell. The first network device sets the code word f _n (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, and f _n is a complex number. Substitute the set code word f _n into the first The formula calculates the estimated value U of the sum of the maximum received powers of the first user equipment on I subcarriers when the adjacent cell interference is the smallest, and will make the codeword _fn with the largest value of U to form the precoding vector F, of course, other methods can also be used The codeword is set, and the present invention does not limit this. Preferably, subcarriers can also be grouped, and the subcarriers in the same group use the same precoding vector, which can reduce the time for calculating U.

Specifically, in the first application scenario, at least one user equipment includes the first user equipment and is applied to the CoMP technology. Referring to FIG. 4 , in the application scenario shown in FIG. 4 , the first network device is connected to the first user equipment. Both network devices send or receive information to the first user equipment to complete uplink data transmission or downlink data transmission of the first user equipment. In the application scenario shown in FIG. 4 , the first cell is a serving cell of the first user equipment, and the second cell is a cooperative cell of the first user equipment.

Optionally, the first network device and the second network device respectively obtain the reference signal receiving power (Reference Signal Receiving Power, RSRP) of the first user equipment in the first cell and the second cell, when the first user equipment is in the first cell When the difference between the RSRP of the first user equipment and the RSRP of the first user equipment in the second cell is less than the first threshold, it means that the second cell can be used as a coordinated cell to perform information transmission with the first user equipment. At the same time, when the RSRP of the first user equipment in the first cell is greater than the second threshold, it means that the quality of the information transmission of the first user equipment in the first cell meets the requirements. The signal power is high enough that CoMP transmission is not required. However, since the RSRP difference between the first user equipment in the first cell and the second cell is very small, it means that the interference signal of the first user equipment to the second cell is also very strong. Signal interference in the cell. Of course, the specific values of the first threshold and the second threshold are set according to actual conditions, and are not limited in the present invention. Specifically, in the application scenario shown in Figure 4:

The first channel quality information includes

Among them, A is the channel quality estimation matrix of the first user equipment in the first cell, H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is a positive integer) is the first user equipment in the first cell Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas in a single cell and M≥N, i number of subcarriers.

The second channel quality information includes

Among them, B is the channel quality estimation matrix of the first user equipment in the second cell, H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first user equipment in the first The channel estimation value on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i is the subcarrier number.

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents the first The precoding vector of the user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _ni is a complex number.

Or optionally, in the second application scenario, at least one user equipment includes a first user equipment and a second user equipment, and is applied to the VMIMO technology, as shown in FIG. 5 . In the application scenario shown in FIG. 5 , the first user equipment and the second user equipment share physical resources and perform information transmission with the first network equipment, and the first user equipment and the second user equipment send different information in the same frequency band and time period . Specifically, in the application scenario shown in Figure 5:

the first channel quality information packet

Among them, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, and H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is a positive integer) is Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the first cell, H _nm,01,i (1≤n≤N, 1≤n≤ M and n, where m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the first cell, and N is the transmit antenna of a single user equipment number, M is the number of receiving antennas in a single cell and M≥2N, i is the subcarrier number.

Second channel quality information packet

Among them, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, and H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is a positive integer) is Channel estimation value of the first user equipment on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the second cell, H _nm,11,i (1≤n≤N, 1≤n≤ M and n, where m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna on the ith subcarrier of the second cell, and N is the transmit antenna of a single user equipment number, M is the number of receiving antennas in a single cell and M≥2N, i is the subcarrier number.

The precoding vector is

F=[f _{01, i} f _{02, i} ... f _{0N, i} f _{11, i} f _{12, i} ... f _{1N, i} ] ^T , (0<|f _{01, i} |...|f _{0N, i} |, | f _{11, i} |...|f _{1N, i} |≤1), f _0n,i (1≤n≤N) represents the pre-prediction of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell. Coding vector, f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _0n,i , f _1n,i are both is plural.

Of course, two application scenarios to which the present invention is applicable are merely illustrated here, which does not mean that the present invention is only applicable to these two application scenarios.

305. The first network device sends the precoding vector to at least one user equipment.

Optionally, the first network device may send information to at least one user equipment according to the precoding vector, or accept information sent by at least one user equipment according to the precoding vector.

Further optionally, when the first user sends information to the first user equipment, the first user equipment adjusts the transmitted signal according to the specific meaning of each codeword in the precoding vector. Exemplarily, for the codeword of the precoding vector F f _0n,i (1≤n≤N), the first user equipment adjusts the transmit signal S _i on the ith subcarrier of the nth transmit antenna of the first user equipment according to the codeword f _0n,i , preferably, Multiply Si by f _{0n,i ,} so that the user equipment can adjust the transmit power and phase on each subcarrier of each transmit antenna.

Optionally, the first network device may also send the precoding vector to the second network device.

In the information transmission method provided by the embodiments of the present invention, the first channel quality information and the second channel quality information are acquired through the first network device, the precoding vector is determined according to the first channel quality information and the second channel quality information, and the precoding vector is determined according to the first channel quality information and the second channel quality information. Send information to at least one user equipment, or send a precoding vector to at least one user equipment and receive information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

With reference to the embodiments corresponding to the above-mentioned FIG. 1 and FIG. 3 , an embodiment of the present invention provides a first network device for executing the information transmission method described in the above-mentioned embodiments corresponding to FIG. 1 and FIG. 3 , referring to FIG. 6 . , the first network device 60 includes: an acquisition unit 601 , an encoding unit 602 , and a transceiver unit 603 .

The obtaining unit 601 is configured to obtain first channel quality information and second channel quality information, the first network device belongs to the first cell, and the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell, The second channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell.

The encoding unit 602 is configured to determine a precoding vector according to the first channel quality information and the second channel quality information acquired by the acquiring unit 601 .

The transceiver unit 603 is configured to send information to at least one user equipment according to the precoding vector generated by the encoding unit 602 .

Alternatively, the transceiver unit 603 is configured to send the precoding vector generated by the encoding unit 602 to at least one user equipment and receive information sent by the at least one user equipment according to the precoding vector.

Optionally, the encoding unit 602 is specifically configured to calculate a precoding vector by substituting matrix A and matrix B into the first formula, where matrix A is a channel quality estimation matrix of at least one user equipment in the first cell, and matrix B is at least one user equipment. Channel quality estimation matrix of the device in the second cell.

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤I.

Optionally, the precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), where N is a positive integer.

The encoding unit 602 is specifically configured to set the codeword _fn (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, and _fn is a complex number, and the set codeword _fn Substitute the first formula to calculate the maximum power estimation value U, and form the precoding vector F with the codeword f _n that makes the maximum power estimation value U take the largest value.

Optionally, in an application scenario, referring to the application scenario shown in FIG. 4 , at least one user equipment includes a first user equipment.

The first channel quality information includes

Among them, A is the channel quality estimation matrix of the first user equipment in the first cell, H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first user equipment in the first cell Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of a cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i is Subcarrier number.

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel quality estimation matrix for the first user equipment in the second cell Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i number of subcarriers.

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents the first The precoding vector of the user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _ni is a complex number.

Optionally, in another application scenario, referring to the application scenario shown in FIG. 5 , at least one user equipment includes a first user equipment and a second user equipment.

first channel quality packet

Among them, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first The channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, H _nm,01,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

Second channel quality information packet

Among them, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, and H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first Channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

The precoding vector is

F=[f _{01, i} f _{02, i} ... f _{0N, i} f _{11, i} f _{12, i} ... f _{1N, i} ] ^T , (0<|f _{01, i} |...|f _{0N, i} |, | f _{11, i} |...|f _{1N, i} |≤1), f _0n,i (1≤n≤N) represents the pre-prediction of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell. Coding vector, f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _0n,i , f _1n,i are both is plural.

Optionally, the acquiring unit 601 includes a first receiving subunit 6011 , a second receiving subunit 6012 and an estimating unit 6013 .

The first receiving subunit 6011 is configured to receive a reference pilot signal sent by at least one user equipment.

The estimation subunit 6013 is configured to estimate the power of at least one user equipment transmitting information in the first cell according to the reference pilot signal sent by the at least one user equipment received by the first receiving subunit 6011 and generate first channel quality information.

The second receiving subunit 6012 is configured to receive the second channel quality information sent by the second network device, where the second network device belongs to the second cell.

The first network device provided by the embodiment of the present invention obtains the first channel quality information and the second channel quality information, determines a precoding vector according to the first channel quality information and the second channel quality information, and sends the information to at least one channel according to the precoding vector. The user equipment sends information, or sends a precoding vector to at least one user equipment and receives information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

With reference to the embodiments corresponding to the above-mentioned FIG. 2 and FIG. 3 , an embodiment of the present invention provides a second network device for executing the information transmission method described in the above-mentioned embodiments corresponding to FIG. 2 and FIG. 3 , with reference to FIG. 7 . , the second network device 70 includes a receiving unit 701 , an estimating unit 702 and a sending unit 703 .

The receiving unit 701 is configured to receive a reference pilot signal sent by at least one user equipment.

The estimation unit 702 is configured to estimate the received power of at least one user in the second cell according to the reference pilot signal received by the receiving unit and generate second channel quality information.

The sending unit 703 is configured to send the second channel quality information to the first network device, so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, and the second channel quality information is used to indicate at least The channel quality of one user equipment in the second cell, the second network device belongs to the second cell, the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell, and the first network device belongs to the first cell.

Optionally, in an application scenario, referring to the application scenario shown in FIG. 4 , at least one user equipment includes the first user equipment,

The second channel quality information includes

Among them, B is the channel quality estimation matrix of the first user equipment in the second cell, H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first user equipment in the first Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i is Subcarrier number.

Optionally, in another application scenario, referring to the application scenario shown in FIG. 5 , at least one user equipment includes a first user equipment and a second user equipment,

Second channel quality information packet

Among them, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, and H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first Channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

The second network device provided by the embodiment of the present invention acquires the second channel quality information and sends the second channel quality information to the first network device, so that the first network device can obtain the second channel quality information according to the first channel quality information and the second channel quality information. The information determines the precoding vector, and receives the precoding vector sent by the first network device. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the signal interference caused by the user equipments to other user equipments in the communication network to the information transmission quality can be solved. high-impact issues.

1 and 3, another embodiment of the present invention provides a first network device for executing the information transmission method described in the embodiments corresponding to FIG. 1 and FIG. 3. Referring to FIG. 8 As shown, the device can be embedded in or be a microprocessor computer, such as a general-purpose computer, a customized computer, a mobile phone terminal or a tablet computer and other portable devices. The first network device 80 includes: at least one processor 801, a memory 802, a bus 803 , a transmitter 804 and a receiver 805 , the at least one processor 801 , the memory 802 , the transmitter 804 and the receiver 805 are connected through the bus 803 and communicate with each other.

The bus 803 may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral CoMPonent, peripheral device interconnect) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, or the like. The bus 803 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 8, but it does not mean that there is only one bus or one type of bus. in:

The memory 802 is used to execute the application program code of the solution of the present invention, and the application program code of the solution of the present invention is stored in the memory, and the execution is controlled by the processor 801 .

The memory can be read-only memory ROM or other types of static storage devices that can store static information and instructions, random access memory RAM or other types of dynamic storage devices that can store information and instructions, or electrically erasable and programmable Read-only memory EEPROM, compact disc CD-ROM or other optical storage, optical storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or capable of being used for Any other medium that carries or stores the desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. These memories are connected to the processor through a bus.

The processor 801 may be a central processing unit 801 (Central Processing Unit, referred to as CPU), or a specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or is configured to implement one or more embodiments of the present invention an integrated circuit.

The processor 801 is used to call the program code in the memory 802. In a possible implementation manner, when the above application program is executed by the processor 801, the following functions are implemented.

The processor 801 is configured to acquire first channel quality information and second channel quality information, the first network device belongs to the first cell, the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell, the second The channel quality information is used to indicate the channel quality of the at least one user equipment in the second cell.

The processor 801 is further configured to determine a precoding vector according to the first channel quality information and the second channel quality information.

The processor 801 is further configured to send information to at least one user equipment through the transmitter 804 according to the precoding vector, or the processor 801 is further configured to send the precoding vector to at least one user equipment through the transmitter 804 and the receiver 805 Receive information sent by at least one user equipment according to the precoding vector.

Optionally, the processor 801 is specifically configured to calculate a precoding vector by substituting the matrix A and the matrix B into the first formula, where the matrix A is the channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is the at least one user equipment. Channel quality estimation matrix of the device in the second cell.

The first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum received power of the first network device on I subcarriers when the adjacent cell interference is minimal, i is the subcarrier number, and 1≤i≤I.

Optionally, the precoding vector F=[f ₁ f ₂ ... f _N ] ^T , (0<|f ₁ |, |f ₂ |...|f _N |≤1), where N is a positive integer.

The processor 801 is specifically configured to set the code word f _n (1≤n≤N) according to the preset step size in the interval (0,1], where n is a positive integer, and f _n is a complex number, and the set code word f _n Substitute the first formula to calculate the maximum power estimation value U, and form the precoding vector F with the codeword f _n that makes the maximum power estimation value U take the largest value.

Optionally, in an application scenario, referring to the application scenario shown in FIG. 4 , at least one user equipment includes a first user equipment.

The first channel quality information includes

Among them, A is the channel quality estimation matrix of the first user equipment in the first cell, H _nm,0,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first user equipment in the first cell Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of a cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i is Subcarrier number.

The second channel quality information includes

Wherein, B is the channel quality estimation matrix of the first user equipment in the second cell, H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the channel quality estimation matrix for the first user equipment in the second cell Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i number of subcarriers.

The precoding vector is F=[f _1i f _2i ... f _Ni ] ^T , (0<|f _1i |, |f _2i |...|f _Ni |≤1), f _ni (1≤n≤N) represents the first The precoding vector of the user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _ni is a complex number.

Optionally, in another application scenario, referring to the application scenario shown in FIG. 5 , at least one user equipment includes a first user equipment and a second user equipment.

first channel quality packet

Among them, A is the channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, H _nm,00,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first The channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, H _nm,01,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the first cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

Second channel quality information packet

Among them, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, and H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first Channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

The precoding vector is

F=[f _{01, i} f _{02, i} ... f _{0N, i} f _{11, i} f _{12, i} ... f _{1N, i} ] ^T , (0<|f _{01, i} |...|f _{0N, i} |, | f _{11, i} |...|f _{1N, i} |≤1), f _0n,i (1≤n≤N) represents the pre-prediction of the first user equipment on the i-th subcarrier of the n-th transmit antenna of the first cell. Coding vector, f _1n,i (1≤n≤N) represents the precoding vector of the second user equipment on the ith subcarrier of the nth transmit antenna of the first cell, f _0n,i , f _1n,i are both is plural.

Optionally, the processor 801 is specifically configured to receive, through the receiver 805, a reference pilot signal sent by at least one user equipment, and estimate that at least one user equipment transmits information in the first cell according to the reference pilot signal sent by the at least one user equipment. power and generate first channel quality information.

The processor 801 is specifically configured to receive, through the receiver 805, the second channel quality information sent by the second network device, where the second network device belongs to the second cell.

The first network device provided by the embodiment of the present invention obtains the first channel quality information and the second channel quality information, determines a precoding vector according to the first channel quality information and the second channel quality information, and sends the information to at least one channel according to the precoding vector. The user equipment sends information, or sends a precoding vector to at least one user equipment and receives information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

2 and 3, another embodiment of the present invention provides a second network device for executing the information transmission method described in the embodiments corresponding to FIG. 2 and FIG. 3, with reference to FIG. 9 As shown, the device can be embedded in or be a microprocessor computer, such as a general-purpose computer, a custom machine, a mobile phone terminal, or a tablet computer and other portable devices. The second network device 90 includes: at least one processor 901, a memory 902, a bus 903 , a transmitter 904 and a receiver 905, the at least one processor 901, the memory 902, the transmitter 904 and the receiver 905 are connected through the bus 903 and complete mutual communication.

The bus 903 may be an ISA (Industry Standard Architecture, industry standard architecture) bus, a PCI (Peripheral CoMPonent, peripheral device interconnect) bus, or an EISA (Extended Industry Standard Architecture, extended industry standard architecture) bus, or the like. The bus 903 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus. in:

The memory 902 is used to execute the application program code of the solution of the present invention, and the application program code of the solution of the present invention is stored in the memory, and the execution is controlled by the processor 901 .

The memory can be read-only memory ROM or other types of static storage devices that can store static information and instructions, random access memory RAM or other types of dynamic storage devices that can store information and instructions, or electrically erasable and programmable Read-only memory EEPROM, compact disc CD-ROM or other optical storage, optical storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic storage device, or capable of being used for Any other medium that carries or stores the desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. These memories are connected to the processor through a bus.

The processor 901 may be a central processing unit (Central Processing Unit, referred to as CPU), or a specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or is configured to implement one or more embodiments of the present invention an integrated circuit.

The processor 901 is used to call the program code in the memory 902. In a possible implementation manner, when the above application program is executed by the processor 901, the following functions are implemented.

The processor 901 is configured to receive, through the receiver 905, a reference pilot signal sent by at least one user equipment.

The processor 901 is further configured to estimate the received power of at least one user in the second cell according to the reference pilot signal and generate second channel quality information.

The processor 901 is further configured to send the second channel quality information to the first network device through the transmitter 904, so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, and the second channel quality information The information is used to indicate the channel quality of at least one user equipment in the second cell, the second network equipment belongs to the second cell, the first channel quality information is used to indicate the channel quality of at least one user equipment in the first cell, and the first network equipment belongs to first district.

Optionally, in an application scenario, referring to the application scenario shown in FIG. 4 , at least one user equipment includes the first user equipment,

The second channel quality information includes

Among them, B is the channel quality estimation matrix of the first user equipment in the second cell, H _nm,1,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first user equipment in the first Channel estimation value on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is the number of receive antennas of a single cell and M≥N, i is Subcarrier number.

Optionally, in another application scenario, referring to the application scenario shown in FIG. 5 , at least one user equipment includes a first user equipment and a second user equipment,

Second channel quality information packet

Among them, B is the channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, and H _nm,10,i (1≤n≤N, 1≤n≤M and n, m is an integer) is the first Channel estimation value of a user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, H _nm,11,i (1≤n≤N, 1≤n≤M and n , m is an integer) is the channel estimation value of the second user equipment on the nth transmit antenna corresponding to the mth receive antenna of the ith subcarrier of the second cell, N is the number of transmit antennas of a single user equipment, M is a single The number of receiving antennas of the cell and M≥2N, i is the subcarrier number.

The second network device provided by the embodiment of the present invention acquires the second channel quality information and sends the second channel quality information to the first network device, so that the first network device can obtain the second channel quality information according to the first channel quality information and the second channel quality information. The information determines the precoding vector, and receives the precoding vector sent by the first network device. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the signal interference caused by the user equipments to other user equipments in the communication network to the information transmission quality can be solved. high-impact issues.

An embodiment of the present invention provides a wireless network system. Referring to FIG. 10 , the wireless network system 101 includes a first network device 1011 , a second network device 1012 and at least one user equipment 1013 .

The first network device 1011 is the first network device described in the embodiment corresponding to FIG. 6 , and the second network device 1012 is the second network device described in the embodiment corresponding to FIG. 7 .

Alternatively, the first network device 1011 is the first network device described in the embodiment corresponding to FIG. 8 , and the second network device 1012 is the second network device described in the embodiment corresponding to FIG. 9 .

In the wireless network system provided by the embodiments of the present invention, the first channel quality information and the second channel quality information are acquired through the first network device, the precoding vector is determined according to the first channel quality information and the second channel quality information, and the precoding vector is determined according to the first channel quality information and the second channel quality information. Send information to at least one user equipment, or send a precoding vector to at least one user equipment and receive information sent by the at least one user equipment according to the precoding vector. Because the second channel quality information is referenced in the process of determining the precoding vector, the signal interference to other user equipments when the information is sent can be reduced, and the influence of the signal interference caused by the user equipments to other user equipments in the communication network on the information transmission quality can be solved. bigger problem.

From the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that a computer can access. Taking this as an example but not limited to: computer readable media may include random access memory (Random Access Memory, RAM), read only memory (Read Only Memory, ROM), electrically erasable programmable read only memory (Electrically Erasable Programmable Read Only Memory, EEPROM), CD-ROM (CoMPact Disc Read Only Memory, CD-ROM) or other optical disk storage, magnetic disk storage medium or other magnetic storage device, or capable of carrying or storing desired program code in the form of instructions or data structures and Any other medium that can be accessed by a computer. also. Any connection can be appropriately made into a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, Then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwave are included in the fusing of the pertinent medium. As used herein, discs and discs include compact discs (CoMPact Discs, CDs), laser discs, optical discs, Digital Versatile Discs (DVDs), floppy discs, and Blu-ray discs, where discs generally reproduce data magnetically, and discs Lasers are used to optically copy data. Combinations of the above should also be included within the scope of computer-readable media.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (28)

1. A first network device, comprising:

an obtaining unit, configured to obtain first channel quality information and second channel quality information, where the first network device belongs to a first cell, the first channel quality information is used to indicate channel quality of at least one user equipment in the first cell, and the second channel quality information is used to indicate channel quality of the at least one user equipment in a second cell;

a coding unit, configured to determine a precoding vector according to the first channel quality information and the second channel quality information acquired by the acquisition unit;

a transceiving unit, configured to send information to the at least one user equipment according to the precoding vector generated by the encoding unit;

or, the transceiver unit is configured to send the precoding vector generated by the encoding unit to the at least one ue and receive information sent by the at least one ue according to the precoding vector;

the encoding unit is specifically configured to substitute a matrix a and a matrix B into a first formula to calculate the precoding vector, where the matrix a is a channel quality estimation matrix of the at least one ue in the first cell, and the matrix B is a channel quality estimation matrix of the at least one ue in the second cell;

the first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I;

the precoding vector F ═ F₁ f₂…f_N]^T,(0＜|f₁|,f₂|…f_NLess than or equal to 1), and N is a positive integer;

the coding unit, in particular for setting a codeword f_n(N is more than or equal to 1 and less than or equal to N), N is a positive integer, f_nIs a plurality; code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

2. The apparatus of claim 1,

the coding unit is specifically used for the interval (0, 1)]Setting code word f according to preset step length_n。

3. The apparatus of claim 1, wherein the at least one user device comprises a first user device;

the first channel quality information comprises

Wherein A is a channel quality estimation matrix of the first UE in the first cell, H_nm,0,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number;

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell by the first user equipment, L is the number of transmitting antennas of the single user equipment, M is the number of receiving antennas of the single cell, M is more than or equal to L, and i is a subcarrier number;

the precoding vector is F ═ F_1i f_2i…f_Ni]^T,(0＜|f_1i|,f_2i|…|f_Ni|≤1)，f_ni(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the first user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_niIs a plurality of numbers.

4. The apparatus of claim 1, wherein the at least one UE comprises a first UE and a second UE;

the first channel quality information packet

Wherein A is a channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, and H_nm,00,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, H is an integer_nm,01,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the second channel quality information packet

Wherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the precoding vector is

F＝[f_01,i f_02,i … f_0N,i f_11,i f_12,i … f_1N,i]^T,(0＜|f_01,i|…|f_0N,i|,|f_11,i|…|f_1N,i|≤1)，f_0n,i(1≤n≤N) Representing a precoding vector, f, of the first user equipment on an i-th subcarrier of an n-th transmit antenna of the first cell_1n,i(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the second user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_0n,i，f_1n,iAre all complex.

5. The apparatus of claim 4,

the acquiring unit comprises a first receiving subunit, configured to receive a reference pilot signal sent by the at least one user equipment;

the obtaining unit further includes an estimating subunit, configured to estimate, according to the reference pilot signal sent by the at least one user equipment and received by the first receiving subunit, power of information transmission of the at least one user equipment in the first cell, and generate the first channel quality information.

6. The apparatus according to any one of claims 1 to 5,

the acquiring unit further includes a second receiving subunit, configured to receive the second channel quality information sent by a second network device, where the second network device belongs to a second cell.

7. A second network device, comprising:

a receiving unit, configured to receive a reference pilot signal sent by at least one user equipment;

an estimating unit, configured to estimate, according to the reference pilot signal received by the receiving unit, a received power of the at least one user in a second cell and generate second channel quality information;

a sending unit, configured to send the second channel quality information to a first network device, so that the first network device determines a precoding vector according to the second channel quality information and the first channel quality information, where the second channel quality information isThe quantity information is used for indicating the channel quality of the at least one user equipment in a second cell, the second network equipment belongs to the second cell, the first channel quality information is used for indicating the channel quality of the at least one user equipment in a first cell, and the first network equipment belongs to the first cell; the first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including: the first network device substitutes a matrix A and a matrix B into a first formula to calculate the precoding vector, wherein the matrix A is a channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell; the first formula isWherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I; the precoding vector

F＝[f₁ f₂…f_N]^T,(0＜|f₁|,|f₂|…|f_NLess than or equal to 1), and N is a positive integer;

or, the determining, by the first network device, a precoding vector according to the first channel quality information and the second channel quality information includes: the first network device sets a codeword f_n(N is more than or equal to 1 and less than or equal to N), N is a positive integer, f_nIs a plurality; code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

8. The apparatus of claim 7, wherein the at least one user equipment comprises a first user equipment,

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number.

9. The apparatus of claim 7, wherein the at least one UE comprises a first UE and a second UE,

the second channel quality information packet

Wherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of the single user equipment, M is the number of receiving antennas of the single cell, M is more than or equal to 2L, and i is a subcarrier number.

10. A first network device comprising a processor, a memory, a bus, a transmitter and a receiver, the processor, the memory, the transmitter and the receiver being interconnected by the bus;

the processor is configured to obtain first channel quality information and second channel quality information, where the first network device belongs to a first cell, the first channel quality information is used to indicate channel quality of at least one user equipment in the first cell, and the second channel quality information is used to indicate channel quality of the at least one user equipment in a second cell;

the processor is further configured to determine a precoding vector according to the first channel quality information and the second channel quality information;

the processor is further configured to send information to the at least one user equipment through the transmitter according to the precoding vector, or the processor is further configured to send the precoding vector to the at least one user equipment through the transmitter and receive information sent by the at least one user equipment according to the precoding vector through the receiver;

the processor is specifically configured to substitute a matrix a and a matrix B into a first formula to calculate the precoding vector, where the matrix a is a channel quality estimation matrix of the at least one ue in the first cell, and the matrix B is a channel quality estimation matrix of the at least one ue in the second cell;

the first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I;

the precoding vector F ═ F₁ f₂…f_N]^T,(0＜|f₁|,|f₂|…|f_NLess than or equal to 1), and N is a positive integer;

the processor is particularly configured to set a codeword f_n(N is more than or equal to 1 and less than or equal to N), N is a positive integer, f_nIs a plurality; code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

11. The apparatus of claim 10,

the processor is specifically configured to be in the interval (0, 1)]Setting code word f according to preset step length_n。

12. The apparatus of claim 10, wherein the at least one user device comprises a first user device;

the first channel quality information comprises

Wherein A is a channel quality estimation matrix of the first UE in the first cell, H_nm,0,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number;

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell by the first user equipment, L is the number of transmitting antennas of the single user equipment, M is the number of receiving antennas of the single cell, M is more than or equal to L, and i is a subcarrier number;

the precoding vector is F ═ F_1i f_2i…f_Ni]^T,(0＜|f_1i|,|f_2i|…|f_Ni|≤1)，f_ni(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the first user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_niIs a plurality of numbers.

13. The apparatus of claim 10, wherein the at least one UE comprises a first UE and a second UE;

the first channel quality information packet

Wherein A is a channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, and H_nm,00,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, H is an integer_nm,01,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the second channel quality information packet

Wherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the precoding vector is

F＝[f_01,i f_02,i…f_0N,i f_11,i f_12,i…f_1N,i]^T,(0＜|f_01,i|…|f_0N,i|,|f_11,i|…|f_1N,i|≤1)，f_0n,i(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the first user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_1n,i(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the second user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_0n,i，f_1n,iAre all complex.

14. The apparatus of claim 13,

the processor is specifically configured to receive, by the receiver, a reference pilot signal sent by the at least one ue, estimate, according to the reference pilot signal sent by the at least one ue, power of information transmitted by the at least one ue in the first cell, and generate the first channel quality information.

15. The apparatus according to any one of claims 10 to 14,

the processor is specifically configured to receive, by the receiver, the second channel quality information sent by a second network device, where the second network device belongs to a second cell.

16. A second network device, comprising a processor, a memory, a bus, a transmitter, and a receiver, wherein the processor, the memory, the transmitter, and the receiver are connected to each other via the bus;

the processor is configured to receive, by the receiver, a reference pilot signal transmitted by at least one user equipment;

the processor is further configured to estimate a received power of the at least one user in a second cell according to the reference pilot signal and generate second channel quality information;

the processor is further configured to send, by the transmitter, the second channel quality information to a first network device, so that the first network device determines a precoding vector according to the second channel quality information and first channel quality information, where the second channel quality information is used to indicate channel quality of the at least one user equipment in a second cell, the second network device belongs to the second cell, the first channel quality information is used to indicate channel quality of the at least one user equipment in a first cell, and the first network device belongs to the first cell; the first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including: the first network device substitutes a matrix A and a matrix B into a first formula to calculate the precoding vector, wherein the matrix A is a channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell; the first formula isWherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I; the precoding vector F ═ F₁ f₂…f_N]^T,(0＜|f₁|,|f₂|…|f_NLess than or equal to 1), and N is a positive integer;

or, the determining, by the first network device, a precoding vector according to the first channel quality information and the second channel quality information includes: the first network device sets a codeword f_n(N is more than or equal to 1 and less than or equal to N), N is a positive integer, f_nIs a plurality; code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

17. The apparatus of claim 16, wherein the at least one user equipment comprises a first user equipment,

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number.

18. The apparatus of claim 16, wherein the at least one UE comprises a first UE and a second UE,

the second channel quality information comprisesWherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of the single user equipment, M is the number of receiving antennas of the single cell, M is more than or equal to 2L, and i is a subcarrier number.

19. An information transmission method, comprising:

a first network device acquires first channel quality information, wherein the first network device belongs to a first cell, and the first channel quality information is used for indicating the channel quality of at least one user device in the first cell;

the first network equipment acquires second channel quality information, wherein the second channel quality information is used for indicating the channel quality of the at least one user equipment in a second cell;

the first network equipment determines a precoding vector according to the first channel quality information and the second channel quality information;

the first network device sends information to the at least one user equipment according to the precoding vector, or the first network device sends the precoding vector to the at least one user equipment and receives the information sent by the at least one user equipment according to the precoding vector;

the first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including:

the first network device substitutes a matrix A and a matrix B into a first formula to calculate the precoding vector, wherein the matrix A is a channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell; the first formula is

Wherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I;

the precoding vector F ═ F₁ f₂…f_N]^T,(0＜…|f₁|,|f₂|…|f_NLess than or equal to 1), and N is a positive integer;

or,

the first network device sets a codeword f_n(N is more than or equal to 1 and less than or equal to N), N is a positive integer, f_nIs a plurality;

code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

20. The method of claim 19, wherein the first network device sets a codeword comprising:

the first network device is in the interval (0, 1)]Setting code word f according to preset step length_n。

21. The method of claim 19, wherein the at least one user device comprises a first user device;

the first channel quality information comprises

Wherein A is a channel quality estimation matrix of the first UE in the first cell, H_nm,0,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number;

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell by the first user equipment, L is the number of transmitting antennas of the single user equipment, M is the number of receiving antennas of the single cell, M is more than or equal to L, and i is a subcarrier number;

the precoding vector is F ═ F_1i f_2i…f_Ni]^T,(0＜|f_1i|,|f_2i|…|f_Ni|≤1)，f_ni(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the first user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_niIs a plurality of numbers.

22. The method of claim 19, wherein the at least one UE comprises a first UE and a second UE;

the first channel quality information packet

Wherein A is a channel quality estimation matrix of the first user equipment and the second user equipment in the first cell, and H_nm,00,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, H is an integer_nm,01,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n, M is an integer) is a channel estimation value of the second user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the first cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the second channel quality information packet

Wherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M and n,m is an integer) is a channel estimation value of the second user equipment on an nth transmitting antenna corresponding to an mth receiving antenna of an ith subcarrier of the second cell, L is the number of transmitting antennas of single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is a subcarrier number;

the precoding vector is

F＝[f_01,i f_02,i…f_0N,i f_11,i f_12,i…f_1N,i]^T,(0＜|f_01,i|…|f_0N,i|,|f_11,i|…|f_1N,i|≤1)，f_0n,i(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the first user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_1n,i(N is more than or equal to 1 and less than or equal to N) represents a precoding vector of the second user equipment on the ith subcarrier of the nth transmitting antenna of the first cell, f_0n,i，f_1n,iAre all complex.

23. The method of claim 22, wherein the first network device obtains first channel quality information, comprising:

the first network equipment receives a reference pilot signal sent by the at least one user equipment;

the first network equipment estimates the power of information transmitted by the at least one user equipment in the first cell according to the reference pilot signal transmitted by the at least one user equipment and generates the first channel quality information.

24. The method of any of claims 19-23, wherein obtaining second channel quality information by the first network device comprises:

and the first network equipment receives the second channel quality information sent by second network equipment, wherein the second network equipment belongs to a second cell.

25. An information transmission method, comprising:

the second network equipment receives a reference pilot signal sent by at least one user equipment;

the second network equipment estimates the receiving power of the at least one user in a second cell according to the reference pilot signal and generates second channel quality information;

the second network device sends the second channel quality information to a first network device, so that the first network device determines a precoding vector according to the second channel quality information and first channel quality information, the second channel quality information is used for indicating the channel quality of the at least one user device in a second cell, the second network device belongs to the second cell, the first channel quality information is used for indicating the channel quality of the at least one user device in a first cell, and the first network device belongs to the first cell; the first network device determines a precoding vector according to the first channel quality information and the second channel quality information, including: the first network device substitutes a matrix A and a matrix B into a first formula to calculate the precoding vector, wherein the matrix A is a channel quality estimation matrix of the at least one user equipment in the first cell, and the matrix B is a channel quality estimation matrix of the at least one user equipment in the second cell; the first formula isWherein, F is the precoding vector, U is the estimated value of the sum of the maximum receiving power of the first network equipment on I subcarriers when the interference of the adjacent cell is minimum, I is the subcarrier number, and I is more than or equal to 1 and less than or equal to I; the precoding vector

F＝[f₁ f₂…f_N]^T,(0＜|f₁|,|f₂|…|f_NLess than or equal to 1), and N is a positive integer;

or, the determining, by the first network device, a precoding vector according to the first channel quality information and the second channel quality information includes: the first network device sets a codeword f_n(1≤n≤N) N is a positive integer, f_nIs a plurality; code word f to be set_nSubstituting the first formula to calculate U, and enabling the code word f with the maximum value of U to be obtained_nAnd forming the precoding vector F.

26. The method of claim 25, wherein the at least one user device comprises a first user device,

the second channel quality information comprises

Wherein B is a channel quality estimation matrix of the first user equipment in the second cell, H_nm,1,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value of the first user equipment on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, L is the number of transmitting antennas of a single user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to L, and i is a subcarrier number.

27. The method of claim 25, wherein the at least one UE comprises a first UE and a second UE,

the second channel quality information packet

Wherein B is a channel quality estimation matrix of the first user equipment and the second user equipment in the second cell, H_nm,10,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell, H is an integer_nm,11,i(n is more than or equal to 1 and less than or equal to L, M is more than or equal to 1 and less than or equal to M, and n and M are integers) is a channel estimation value on the nth transmitting antenna corresponding to the mth receiving antenna of the ith subcarrier of the second cell by the second user equipment, and L is a single signalThe number of transmitting antennas of the user equipment, M is the number of receiving antennas of a single cell, M is more than or equal to 2L, and i is the number of subcarriers.

28. A wireless network system is characterized by comprising a first network device, a second network device and at least one user device;

wherein the first network device is the first network device of any one of claims 1-6, and the second network device is the second network device of any one of claims 7-9;

alternatively, the first network device is the first network device of any one of claims 10-15, and the second network device is the second network device of any one of claims 16-18.