WO2015042972A1

WO2015042972A1 - Method for transmitting common pilot signal, related device, and communications system

Info

Publication number: WO2015042972A1
Application number: PCT/CN2013/084751
Authority: WO
Inventors: 吕永霞; 张雯; 汲桐
Original assignee: 华为技术有限公司
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2015-04-02
Also published as: CN104838711A

Abstract

A method for transmitting a common pilot signal, a related device, and a communications system. A method for transmitting a common pilot signal comprises: generating a common pilot signal; and sending the common pilot signal, the common pilot signal being borne by Y resource element groups in a subframe, each of the Y resource element groups comprising X resource elements, a common pilot signal borne by a first resource element in the X resource elements being equal to a common pilot signal borne by a second resource element in the X resource elements, or the common pilot signal borne by the first resource element in the X resource elements being obtained by means of conversion of the common pilot signal borne by the second resource element in the X resource elements, the first resource element and the second resource element being any two resource elements in the X resource elements, and Y and X being positive integers greater than 1. The solutions in the embodiments of the present invention help to increase a signal-to-noise ratio of a common pilot signal.

Description

Common pilot signal transmission method and related equipment and communication system

The present invention relates to the field of communications technologies, and in particular, to a common pilot signal transmission method and related equipment and communication system. Background technique

M2M Machine to machine usually refers to the transfer of data from one terminal to another, that is, the machine-to-machine dialogue. But in a broad sense, M2M can represent machine-to-machine, human-to-machine, machine-to-person, mobile network-to-machine connection and communication. It covers all technologies that enable communication connections between people, machines, and systems. And means.

The M2M application market is growing rapidly worldwide. With the deepening of related technologies including communication equipment and management software, the cost of M2M products will decline, and M2M services will gradually mature. At present, it has been applied in the fields of safety monitoring, mechanical services, maintenance business, fleet management, vending machines, public transportation systems, industrial process automation, electric machinery, urban information, etc. in the United States, Canada and other countries.

The existing Long Term Evolution (LTE) network has a rate of 20 kbps, and the required signal-to-noise ratio (SNR) for the downlink data channel is -4.0 db, and the required SNR of the corresponding uplink data channel is -4.3 dB. M2M needs about at least 20dB coverage gain over existing LTE, and its SNR operating point is about -24dB. Wherein, for a given different coverage gain, a certain number of data repetitions need to be performed on each channel under the premise of ideal channel estimation, and in the case of actual channel estimation, more times of data are usually required on each channel. repeat.

It has been found in the research and practice of the prior art that the inventors of the present invention found that the more data repetitions on the channel, the more the spectral efficiency decreases, and the number of repetitions required for actual channel estimation may be much larger than theoretically. The value of the value, and the main reason for this difference is the poor channel estimation performance in the case of low signal to noise ratio. Summary of the invention

Embodiments of the present invention provide a common pilot signal transmission method, a related device, and a communication system, in order to improve a signal-to-noise ratio of a common pilot signal. A first aspect of the embodiments of the present invention provides a common pilot signal transmission method, including: generating a common pilot signal;

Transmitting the common pilot signal, where the common pilot signal is represented by Y resource elements in a subframe

A common pilot signal carried by the first resource element among the X resource elements is equivalent to a common pilot signal carried by the second resource element among the X resource elements, or the X resource elements The common pilot signal carried by the first resource element is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource are obtained. An element is any two of the X resource elements, wherein the Y and the X are positive integers greater than one.

With reference to the first aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, The number of subcarriers corresponding to the resource element in the frequency domain in the binary group, the / indicating the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift ) mod6 . Where, , = 0, A b_ 3 if ^ {0,l} _;

Wherein, shift A 丄 mod 6 where, the number of downlink resource blocks in the system, the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the A^i represents The number of the cell, where m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, a number indicating a subcarrier corresponding to a resource element in a frequency domain in the binary group, the / indicating a number of the orthogonal OFDM symbol corresponding to the source element;

Where , , = 0, ^^ _ 3 if p E {0,1

Cell

Where v _sh if _t ⁼ ^iiT ^mod6 _;

The number of the downlink resource blocks in the system, the A^^b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, The m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

In conjunction with the first possible implementation of the first aspect, in a fourth possible implementation, The number of the antenna ports is 2, and the positions of the resource elements in the Y resource element groups are represented by a binary group, and the number of the subcarriers corresponding to the resource elements in the frequency domain in the dual group, the / indicates The resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift ) mod6. where / _{= 0} , 1 , ^^^_ ₃ , ^_2 if E{0, l} _;

Cell

A 丄 mod 6

The ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, and the m represents the number of the corresponding cell. The sequence number of the pilot sequence in a pilot column in the frequency domain.

With reference to the first possible implementation manner of the first aspect, in a fifth possible implementation, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, a number indicating a subcarrier corresponding to a resource element in a frequency domain in the binary group, the / indicating a number corresponding to the orthogonal frequency division multiplexing OFDM symbol of the resource element; k = 6m + (v + v _shift ) mod6 · Where / = ₀ ,1, ₂ ,^^_ ₃ ,^;^_ ₂ ,^^^_1 if E{0,l} _;

A mod6 _;

Indicates the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain.

With reference to the first possible implementation manner of the first aspect, in a sixth possible implementation, if the number of antenna ports is 4, the location of the resource elements in the Y resource element groups is represented by a dual group, a number indicating a subcarrier corresponding to a resource element in a frequency domain in the binary group, the / indicating a number corresponding to the orthogonal frequency division multiplexing OFDM symbol of the resource element; k = 6m + (v + v _shift ) mod6 ·

= 0,l"..X — 1

= A ' ID丄mod 6

The number of the downlink resource blocks in the system, the A^^b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, W _s denotes a slot number within a subframe, and m denotes a sequence number of a pilot sequence in a pilot sequence in the frequency domain.

With reference to the first possible implementation manner of the first aspect, in a seventh possible implementation, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a dual group, The number of subcarriers corresponding to the resource element in the frequency domain in the binary group, the / indicating the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift ) mod6 . If _P ≡ {ο,ι

i _ft = mod6 The _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, where the m A sequence number indicating the frequency sequence of a pilot sequence within a pilot column. With reference to the first possible implementation manner of the first aspect, in the eighth possible implementation, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups passes through the binary group ( , I) Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _Shift )mod6 . where , , = 0, A b _ 3 if ^ {0,l} _;

among them

0,1,2 if = 0 and / = 0

v =

Wherein 3,4,5 if = 0 and /≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink slot, and the p represents the antenna The number of the port, the A^i indicates the number of the corresponding cell, and the m indicates the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A second aspect of the embodiments of the present invention provides a common pilot signal transmission method, which may include: receiving a common pilot signal;

Performing channel measurement and/or demodulation of data based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in a subframe, each resource element in the Y resource element groups The group includes X resource elements, and the common pilot signal carried by the first resource element of the X resource elements is equivalent to the common guide carried by the second resource element among the X resource elements Frequency a signal, or a common pilot signal carried by the first one of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where The first resource element and the second resource element are any two of the X resource elements, wherein the Y and the X are positive integers greater than one.

With reference to the second aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, The number of subcarriers corresponding to the resource element in the frequency domain in the binary group, the / indicating the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift ) mod6 . Where, , = 0, A b _ 3 if ^ {0,l} _;

The _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the pilot sequence in one pilot column in the frequency domain. serial number.

In conjunction with the first possible implementation of the second aspect, in a third possible implementation, The number of the antenna ports is 2, and the positions of the resource elements in the Y resource element groups are represented by a binary group, and the number of the subcarriers corresponding to the resource elements in the frequency domain in the dual group, the / indicates The resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift ) mod6. where, , = 0, A b_3 if^{0,l} _;

Cell

A 丄 mod 6

With reference to the first possible implementation manner of the second aspect, in a fourth possible implementation, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, a number indicating a subcarrier corresponding to a resource element in a frequency domain in the binary group, the / indicating a number corresponding to the orthogonal frequency division multiplexing OFDM symbol of the resource element; k = 6m + (v + v _shift ) mod6 · Where / _{= 0} ,1,^^^_ ₃ , ^_2 if E{0,l} _; Lo

The _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the pilot sequence in a pilot column. The serial number of the frequency domain.

With reference to the first possible implementation manner of the second aspect, in a fifth possible implementation, if the number of antenna ports is 2, the location of the resource elements in the Y resource element groups is represented by a dual group, a number indicating a subcarrier corresponding to a resource element in a frequency domain in the binary group, the / indicating a number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift ) mod6. Where / = ₀ ,1, ₂ ,^^_ ₃ ,^;^_ ₂ ,^^^_1 if p E {0,1

With reference to the first possible implementation manner of the second aspect, in a sixth possible implementation, if the number of antenna ports is 4, the location of the resource elements in the Y resource element groups is represented by a dual group, The representation resource in the binary group indicates/ indicates the number of the orthogonal OFDM symbol corresponding to the source element;

The number of OFDM symbols in a row slot, the p represents the number of the antenna port, and the A^i represents the corresponding 'J The number of the area, the W _s represents the slot number within one subframe, and the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the second aspect, in a seventh possible implementation, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups passes through the binary group ( , I) Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _Shift )mod6. where / = ₀ ,1, ₂ ,^^_ ₃ ,^;^_ ₂ ,^^^_1 if E{0,l} _;

among them

0 if = 0and/ = 0

v =

Where 3 if = 0and / ≠ 0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in a downlink time slot, and the p represents the number of the antenna port, A^i denotes the number of the corresponding cell, and m denotes the sequence number of the pilot sequence in one pilot column in the frequency domain. With reference to the first possible implementation manner of the second aspect, in the eighth possible implementation, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups passes through the dual group (I) Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _Shift )mod6 · Where , , = 0, ^^ _ 3 if p E {0,1

A 丄 mod 6 where A ^ J represents the number of downlink resource blocks in the system, the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A ^ i represents Corresponding to the number of the cell, the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A third aspect of the present invention provides an access device, which may include:

a generator for generating a common pilot signal;

a transmitter, configured to send the common pilot signal, where the common pilot signal is a source element in a subframe, and a common pilot signal carried by a first resource element among the X resource elements is equivalent to a common pilot signal carried by the second resource element among the X resource elements, or a common pilot signal carried by the first resource element of the X resource elements, by the X resource elements The common pilot signal carried by the second resource element is transformed, wherein the first resource element and the second resource element are any two resource elements of the X resource elements, where γ and the X are positive integers greater than one.

With reference to the third aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups is represented by a dual group, In the binary group, /) represents a number of a subcarrier corresponding to a resource element in a frequency domain, and the / indicates that the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol; Where = 6 + (v + v _shift ) mod6 where Z = 0, ^V _sb _3 if ^ E{0,l} _:

With reference to the first possible implementation manner of the third aspect, in a third possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6. where Z = 0, A^ _b — 3 if ^ E{0,l} _;

= 0,l"..X — 1

Wherein, shift A ^A ' ID, where the number of downlink resource blocks in the system is represented, the A^^b is the number of OFDM symbols in one downlink time slot, and the p represents the number of the antenna port, where the A^ i denotes the number of the corresponding cell, and m denotes the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the third aspect, in a fourth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 .

Symb

N' od6 The _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, where the m A sequence number indicating the frequency sequence of a pilot sequence within a pilot column. With reference to the first possible implementation manner of the third aspect, in a fifth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where / = ₀ ,1,2, — 3, — 2, — 1 if ^ E {0,l} _;

The _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the pilot sequence in a pilot column. The serial number of the frequency domain. With reference to the first possible implementation manner of the third aspect, in a sixth possible implementation, if the number of antenna ports is 4, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing that the sub-group represents a sub-carrier corresponding to the resource element in the frequency domain Wave number _{: The} / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; where: k = 6m + (v + v _shift ) mod6 .

among them,

m

Where = 0,1 .2 - ^ - 1.

Shift =— A ^A ' ID ¹ mod 6

The number of downlink resource blocks in the system, the 7 _s ^ _b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, W _s denotes a slot number within a subframe, and _m denotes a sequence number of a pilot sequence in a pilot sequence in the frequency domain. With reference to the first possible implementation manner of the third aspect, in a seventh possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, /), a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, = 6 + (v + v _shift ) mod6 _; If _Ρ ≡ {ο,ι

Of which, shift A 丄 mod 6

Among them, the W table indicates the number of the source block blocks of the middle and lower downlink resources in the system, and the A^^b is one downlink and one downlink. The number of OOFFDDMM symbol numbers in the time slot slot, the pp table indicates the number of the antenna port end port port, and the AA^^ii table indicates the pair corresponding The numbering table of the small cell area, the mm table indicates that the sequence of the pilot frequency sequence in the one of the pilot frequency columns is listed in the sequence number of the sequence in the frequency domain. . .

The first one of the third and third aspects of the combination may be implemented in the third embodiment, and in the eighth embodiment of the practical implementation manner, If the number of ports on the antenna line end is 11, then among them, the bit position of the source resource element element in the YY resource source element element group is passed. a two-tuple group, 00 table representation, wherein the table in the two-tuple group indicates that the resource element element element is in the frequency domain domain a number of the carrier wave of the subcarrier, the description of the resource element element pair corresponding to the number of the OOFFDDMM symbol number corresponding to the orthogonal orthogonal frequency division frequency division multiplexing; ;

Where , , = 0, ^^ _3 if p E {0,1

Where v _sh ift ^{= A} ^ ^{mod 6} _;

The indicating the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i indicates the corresponding small The number of the area, where m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A fourth aspect of the present invention provides a user equipment, which may include:

a receiver, configured to receive a common pilot signal;

a processor, configured to perform channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in a subframe, where the Y resource resources The common pilot signal carried by the element is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the common guide carried by the first resource element of the X resource elements The frequency signal is obtained by transforming a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are any two of the X resource elements Resource elements, the Y and the X being positive integers greater than one.

With reference to the fourth aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where , , = 0, A b_ 3 if ^ {0,l} _;

With reference to the first possible implementation manner of the fourth aspect, in a third possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol;

Where , , = 0, ^^ _ 3 if p E {0,1

Ce

丄

Of which, A ll mod 6

The A^ _B indicates the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell. The number, the m represents the sequence number of the pilot sequence in the pilot column in the frequency domain.

With reference to the first possible implementation manner of the fourth aspect, in a fourth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through two a tuple, o, a number indicating a subcarrier corresponding to a resource element in the frequency domain in the dual group, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 · E |o,i

Cell

A 丄 mod 6

The number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents a number The sequence number of the pilot sequence in the pilot column in the frequency domain.

With reference to the first possible implementation manner of the fourth aspect, in a fifth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _Shift )mod6 · where / = ₀ ,1, ₂ ,^ ^_ ₃ ,^;^_ ₂ ,^^^_1 if p E {0,1

,l

Where = 0 "."2' _R ^L — 1

With reference to the first possible implementation manner of the fourth aspect, in a sixth possible implementation, if the number of antenna ports is 4, where the location of the resource elements in the Y resource element groups passes the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol;

Where ^ shift A 丄mod 6

The W represents the number of downlink resource blocks in the system, the A^^b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell. The W _s represents a slot number within a subframe, and the m represents a sequence number of a pilot sequence in a pilot sequence in the frequency domain.

With reference to the first possible implementation manner of the fourth aspect, in a seventh possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 .

If _P ≡ {ο,ι

A 丄 mod 6 where, the number of downlink resource blocks in the system, the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell Number, the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the fourth aspect, in the eighth possible implementation, if the number of antenna ports is 1, wherein the location of the resource elements in the Y resource element groups passes through the binary group, where And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the / indicates that the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol; Where = 6 + (v + v _shift ) mod6 where Z = 0, ^V _sb _3 if ^ E {0,l} _:

Where = 0,l"..X RB — 1

0,1,2 if = 0 and / = 0

v =

Wherein 3,4,5 if = 0 and /≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink slot, and the p represents the antenna The number of the port, the A^i indicates the number of the corresponding cell, and the m indicates the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A fifth aspect of the embodiments of the present invention provides an access device, which may include:

a processor, a memory, and an antenna; the frequency signal; transmitting the common pilot signal by an antenna, wherein the common pilot signal is carried by a source element in a subframe, and a first resource element among the X resource elements a common pilot signal, which is equivalent to a common pilot signal carried by a second resource element among the X resource elements, or a common pilot signal carried by a first resource element of the X resource elements, Converting from a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are any two of the X resource elements a resource element, wherein the γ and the X are positive integers greater than one.

With reference to the fifth aspect, in a first possible implementation manner, the X resource elements are time domain sum

/ or consecutive X resource elements in the frequency domain.

In conjunction with the first possible implementation of the fifth aspect, in a second possible implementation, The number of antenna ports is 2, where the location of the resource elements in the Y resource element groups is represented by a binary group, and the number of subcarriers corresponding to the resource elements in the frequency domain in the dual group, /), The / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift ) mod6. where, , = 0, A b_3 if^{0,l} _;

With reference to the first possible implementation manner of the fifth aspect, in a third possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6. where , , = 0, A b_3 if^{0,l} _; = 0,l"."2' _B ^L - 1·

The ^ indicates the number of downlink resource blocks in the system, the A^^b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^ represents the number of the corresponding cell, m denotes the sequence number of the pilot sequence in the pilot column in the frequency domain.

With reference to the first possible implementation manner of the fifth aspect, in a fourth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, /), a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, = 6 + (v + v _shift ) mod6 _; where / = 0,1,Λ ^— 3,Λ _2 if p {0,1

' ^L -

With reference to the first possible implementation manner of the fifth aspect, in a fifth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 .

If _P ≡ {ο,ι

A 丄 mod 6 where, the number of downlink resource blocks in the system, the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell Number, the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

In conjunction with the first possible implementation of the fifth aspect, in a sixth possible implementation, If the number of antenna ports is 4, where the location of the resource elements in the Y resource element groups is a binary group, where 0 is, the number of the subcarriers corresponding to the resource elements in the frequency domain in the dual group is The / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift ) mod6.

among them,

= N ID mod 6 where the A^ _B represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in one downlink slot, and the p represents the number of the antenna port, the A ^ i indicates that the corresponding cell ID, the subframe W _s denotes a slot number, m represents the pilots out in a pilot sequence in the frequency domain of SEQ ID NO.

With reference to the first possible implementation manner of the fifth aspect, in a seventh possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6. among them, /

If _Ρ ≡ {ο,ι

Where = 0,l"..X — 1

Wherein, shift A 丄 mod 6 where, the number of downlink resource blocks in the system, the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the A^i represents The number of the cell, where m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the fifth aspect, in an eighth possible implementation manner, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol;

Where, ,=0, ^^_3 if p E {0,1 0,l 1

Where = "..X —

0,1,2 if = 0and/ = 0

Where 3,4,5 if = 0and/≠0 where A ¹ mod 6 where the number of downlink resource blocks in the system is represented, the Λ^ sy;m^b is a downlink The number of OFDM symbols in the slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A sixth aspect of the present invention provides a user equipment, which may include:

a processor, a memory, and an antenna; receiving a common pilot signal; performing channel measurement and/or data demodulation based on the common pilot signal, wherein the common pilot signal is carried by Y resource element groups in a subframe, The common pilot signal carried by the Y resource resource elements is equivalent to a common pilot signal carried by the second resource element among the X resource elements, or the first of the X resource elements A common pilot signal carried by a resource element is transformed by a common pilot signal carried by a second resource element of the X resource elements, where the first resource element and the second resource element are Any two of the X resource elements, the Y and the X being a positive integer greater than one.

With reference to the sixth aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the / indicates a number corresponding to the orthogonal frequency division multiplexing OFDM symbol; wherein, = 6m + (v + v _shift )mod6. where Z = 0, A^ _b — 3 if ^ E {0,l} _; Gans m = 0,l,...,2 - ^L - l .

With reference to the first possible implementation manner of the sixth aspect, in a third possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol;

Where, ,=0, ^^_3 if p E {0,1

' -

A ¹ mod 6 The _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, where the m A sequence number indicating the frequency sequence of a pilot sequence within a pilot column.

With reference to the first possible implementation manner of the sixth aspect, in a fourth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where = 0,l, ^ _b - 3, ^ _b - 2 if ^ E {0,l} _;

With reference to the first possible implementation manner of the sixth aspect, in a fifth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing that the sub-group represents a sub-carrier corresponding to the resource element in the frequency domain The number of the wave is / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; where k = 6m + (v + v _shift ) mod6. where / = ₀ , 1, ₂ , ^^_ ₃ , ^;^_ ₂ ,^^^_1 if E{0,l} _;

With reference to the first possible implementation manner of the sixth aspect, in a sixth possible implementation, if the number of antenna ports is 4, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6.

= 0,l"."2' _B ^L — —

Where V _sh ^ift ^{= A} ^ ^mod6 _;

• DL

The number of the downlink resource blocks in the system, the A^^b is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, The W _s represents a slot number within a subframe, and the m represents a sequence number of a pilot sequence in a pilot sequence in the frequency domain.

With reference to the first possible implementation manner of the sixth aspect, in a seventh possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6.

If _P ≡ {ο,ι

Wherein, _ift = mod6 The _symb is the number of OFDM symbols in one downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, where the m A sequence number indicating the frequency sequence of a pilot sequence within a pilot column.

With reference to the first possible implementation manner of the sixth aspect, in an eighth possible implementation manner, if the number of antenna ports is 1, wherein the location of the resource elements in the Y resource element groups passes through the binary group, where Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where Z = 0, A^ _b — 3 if ^ E {0,l} _;

among them

0,1,2 if = 0 and / = 0

v =

Wherein 3,4,5 if = 0 and /≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink slot, and the p represents the antenna The number of the port, the A^i indicates the number of the corresponding cell, and the m indicates the sequence number of the pilot sequence in the pilot sequence in the frequency domain. A seventh aspect of the present invention provides a communication system, which may include:

An access device, configured to generate a common pilot signal, where the common pilot signal is transmitted, where the common pilot signal is carried by Y resource element groups in a subframe, and each of the Y resource element groups The resource element group includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equivalent to the public carried by the second resource element among the X resource elements The pilot signal, or the common pilot signal carried by the first resource element of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where The first resource element and the second resource element are any two resource elements of the X resource elements, where the Y and the X are positive integers greater than one;

And a user equipment, configured to receive a common pilot signal sent by the access device, and perform channel measurement and/or data demodulation based on the common pilot signal.

With reference to the seventh aspect, in a first possible implementation manner, the X resource elements are consecutive X resource elements in a time domain and/or a frequency domain.

With reference to the first possible implementation manner of the seventh aspect, in a second possible implementation manner, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _Shift )mod6 . where , , = 0, A b _ 3 if ^ {0,l} _;

Is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the representation corresponds to 'J The number of the area, where m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the seventh aspect, in a third possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where , , = 0, A b _ 3 if ^ {0,l} _;

The _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the pilot sequence in a pilot column in the frequency domain. Serial number.

With reference to the first possible implementation manner of the seventh aspect, in a fourth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups is through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . Ε {ο,ι

With reference to the first possible implementation manner of the seventh aspect, in a fifth possible implementation, if the number of antenna ports is 2, where the location of the resource elements in the Y resource element groups passes the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6 . where / = ₀ ,i, ₂ ,

If _P ≡ {ο,ι = 0,l"."2 ' _B ^L

With reference to the first possible implementation manner of the seventh aspect, in a sixth possible implementation, if the number of antenna ports is 4, where the location of the resource elements in the Y resource element groups passes the binary group, And indicating, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, where the resource element corresponds to a number of an orthogonal frequency division multiplexing OFDM symbol;

Wherein, ^hift ^ ^^ ^{mod 6} where the representation indicates the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink slot, and the p represents the number of the antenna port, the A^i Indicates the number of the corresponding cell, the W _s represents the slot number in one subframe, and the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

With reference to the first possible implementation manner of the seventh aspect, in a seventh possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through the binary group, Representing, in the binary group, a number indicating a subcarrier corresponding to a resource element in a frequency domain, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; wherein, k = 6m + (v + v _shift )mod6. where / = 0,l,2,A^ _b — 3, — 2, — 1 if^ E{0,l} _;

Where v _sh ^ift ^=A ^ ^mod6 _;

The number of the downlink resource blocks in the system, the number of OFDM symbols in a downlink time slot, the p indicates the number of the antenna port, and the A^i indicates the number of the corresponding cell. The m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. With reference to the first possible implementation manner of the seventh aspect, in the eighth possible implementation, if the number of antenna ports is 1, where the location of the resource elements in the Y resource element groups passes through two a tuple, o, a number indicating a subcarrier corresponding to a resource element in the frequency domain in the dual group, the / indicating a number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 . where , , = 0, ^^ _ 3 if p≡ {0,1

among them

0,1,2 if = 0 and / = 0

v =

Where 3,4,5 if = 0 and /≠0 where

Mod 6 represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell Number, the m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

It can be seen that, in a technical solution provided by some embodiments of the present invention, an access device (such as a base station) generates and sends a common pilot signal, where the common pilot signal is carried by Y resource element groups 7 in a subframe. Each of the foregoing resource element groups includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equivalent to the first of the X resource elements. a common pilot signal carried by the second resource element, or a common pilot signal carried by the first resource element of the X resource elements, and a common pilot signal carried by the second resource element of the X resource elements The transform obtains that the first resource element and the second resource element are any two resource elements of the foregoing X resource elements. Since the access device employs a resource element group including at least two resource elements to carry a common pilot signal having the same or a transformed relationship, the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. A good signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio. DRAWINGS

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

1 is a schematic flowchart of a common pilot signal transmission method according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a common pilot pattern according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of another common pilot signal transmission method according to an embodiment of the present invention; FIG. 4 is a schematic flowchart of another common pilot signal transmission method according to an embodiment of the present invention; FIG. 5-d is a schematic diagram of several common pilot patterns provided by the embodiments of the present invention; FIG. 6 is a schematic diagram of an access device according to an embodiment of the present invention;

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

FIG. 8 is a schematic diagram of another access device according to an embodiment of the present disclosure;

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

FIG. 10 is a schematic diagram of a communication system according to an embodiment of the present invention. detailed description

Embodiments of the present invention provide a common pilot signal transmission method and related equipment and communication system, in order to improve the signal to noise ratio of a common pilot signal.

The detailed description will be respectively made below through specific embodiments.

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present invention and the above figures are used to distinguish similar objects without being used for Describe a specific order or order. It should be understood that the data so used may be interchanged where appropriate so that the embodiments of the invention described herein can be, for example, in an order other than those illustrated or described herein. Implementation. In addition, the terms "comprises" and "comprises" and "comprises" and "includes" or "includes" or "comprises" or "comprises" or "comprises" Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices. An embodiment of the common pilot signal transmission method of the present invention, wherein a common pilot signal transmission method comprises: generating a common pilot signal; transmitting the common pilot signal, wherein the common pilot signal is represented by a Y in a subframe Each resource element group of the above Y resource element groups includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equivalent a common pilot signal carried by the second resource element among the X resource elements, or a common pilot signal carried by the first resource element of the X resource elements, by the first of the X resource elements The common pilot signal carried by the two resource elements is transformed, wherein the first resource element and the second resource element are any two resource elements of the X resource elements, and the Y and the X are positive integers greater than 1.

Referring to FIG. 1, FIG. 1 is a schematic flowchart diagram of a method for transmitting a common pilot signal according to an embodiment of the present invention. As shown in FIG. 1, a common pilot signal transmission method provided by an embodiment of the present invention may include the following contents:

101. Generate a common pilot signal.

102. Send the foregoing common pilot signal.

The common pilot signal is carried by the Y resource element groups in the subframe, and each of the Y resource element groups includes X resource elements, and the first resource element of the X resource elements And the common pilot signal carried by the second resource element of the foregoing X resource elements, or the common pilot signal carried by the first resource element of the X resource elements, by the common pilot signal The common pilot signal carried by the second resource element of the foregoing X resource elements is transformed, wherein the first resource element and the second resource element are any two resource elements of the X resource elements, where the Y And X above is a positive integer greater than one. Resource element.

It can be understood that the antenna port transmitting the common pilot signal is different, and the resource carrying the common pilot signal is different. The position of the elements may also be not only the same.

In some embodiments of the invention,

The common pilot signals carried by the X resource elements may be the same, that is, the repetition of the single ticket, and the common pilot signal carried by the first resource element among the X resource elements included in the resource element group may be the X resources. The common pilot signal carried by the second resource element among the elements is obtained by multiplying two long or three long or other long orthogonal codes (of course, it can also be transformed by other means). The first resource element and the second resource element may be adjacent in a time domain or a frequency domain.

Taking two long orthogonal codes as an example, for example, a common pilot element carried by the resource element R0 in the lowest frequency domain in a certain resource element group in FIG. 2 (each resource element group in FIG. 2 includes three resource elements) The signal Q, the modulation symbol carried on the two resource elements in the frequency domain may be (Q, Q) or (-Q, Q) or (Q, -Q), in which case, it may be a standard protocol. Or the system presets, or the user equipment can be broadcasted by an access device (such as a base station).

Optionally, different base stations or cells may adopt different configurations, for example, cell A adopts (Q, Q), and then cell B adopts (-Q, Q) or (Q, -Q).

Take three long orthogonal codes as an example.

1 1 1

For example: 3⁄4 port is the three-long orthogonal code of J, the density is three times that of the existing one, and it can be three adjacent pilot resources, which are carried by three resource elements in a resource element group in Figure 2. The common pilot signal can be 1 1 1

Or

1 1 e ^j47r/3 e ^jl7r/3

*Q, other pilot density, and so on. The following mainly introduces the case where the number of antenna ports is 2, 4, and 1. In some embodiments of the present invention, if the number of antenna ports is 2, the positions of the resource elements in the Y resource element groups are represented by a binary group (k, I), and the above two groups (k, k in ή) The number of the subcarrier corresponding to the resource element in the frequency domain, where the above/representing the resource element corresponds to the orthogonal frequency division complex The number of the symbol (OFDM, Orthogonal Frequency Division Multiplexing); where k = 6m + (v + v _shift ) mod6. where , , = 0, A b_3 if^{0,l} _;

' -

s _hift = ¹ mod6 _;

The number of source blocks, the above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the pilot sequence in one pilot column. The serial number of the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6. where , , = 0, A b_3 if p E { 0,1}

= 0,l"..X — 1

Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; wherein k = 6m + (v + v _shift ) mod6 .

i _ft = mod6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . where / = ₀ , 1, 2, - 3 , — 2, — 1 if ^ E {0,l} _;

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the pilot sequence in one pilot column in the frequency domain. serial number. In some embodiments of the present invention, if the number of antenna ports is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to orthogonal frequency division multiplexing The number of the OFDM symbol; otherwise, k = 6m + (v + v _shift ) mod6

= A ' ID丄mod 6

^ denotes the number of downlink resource blocks in the system, the above Λ^;^ is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above W _s represents a sub The slot number in the frame, where _m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6. Where / = ₀ ,i, ₂ ,

, = 0,l"..X — 1

Wherein, ^hift ^ ^^ ^{mod 6} where the above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the corresponding cell The number of the above m indicates the sequence number of the pilot sequence in the pilot frequency column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where, ,=0, ^^_3 if p E {0,1

its

in

Wherein, the above indicates the number of downlink resource blocks in the system, and the above Λ^;^ is a downlink The number of OFDM symbols in the slot, the above p indicates the number of the antenna port, the above A^i indicates the number of the corresponding cell, and the above m indicates the sequence number of the pilot sequence in one pilot sequence in the frequency domain.

Wherein, the above variables V and V _shlft define frequency domain positions of different common pilot signals.

In the above example, the case where the number of antenna ports is 2, 4, and 1 is taken as an example. The case where the number of antenna ports is other values can be deduced.

It can be seen that, in this embodiment, the access device (for example, the base station) generates a common pilot signal; and sends the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe, and the first resource of the Y The common pilot signal carried by the element is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the first resource element of the X resource elements. And the common pilot signal carried by the second resource element of the foregoing X resource elements is transformed, where the first resource element and the second resource element are common to the X resource elements and have the same transformation relationship The pilot signal is similar to the use of a single resource element to independently transmit a common pilot signal, and the foregoing solution is advantageous for obtaining a better signal-to-noise ratio, thereby facilitating effective improvement of channel estimation performance of the user in the case of low SNR.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. Another embodiment of the common pilot signal transmission method of the present invention, wherein another common pilot signal transmission method comprises: receiving a common pilot signal; performing channel measurement and/or data demodulation based on the common pilot signal, The common pilot signal is carried by the Y resource element groups in the subframe, and the common pilot signal carried by the first resource element is equivalent to the second resource element of the X resource elements. The common pilot signal, or the common pilot signal carried by the first resource element of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where The first resource element and the second resource element are any two of the X resource elements, wherein the Y and the X are positive integers greater than one.

Referring to FIG. 3, FIG. 3 is another public pilot signal transmission side according to another embodiment of the present invention. Schematic diagram of the process. As shown in FIG. 3, another common pilot signal transmission method provided by another embodiment of the present invention may include the following contents:

301. Receive a common pilot signal.

302. Perform channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in a subframe, and each resource element group in the Y resource element groups. Including X resource elements, the common pilot signal carried by the first resource element among the X resource elements is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the foregoing The common pilot signal carried by the first resource element of the X resource elements is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are Any two of the above X resource elements, the above Y and the above X are positive integers greater than one. Resource element.

It can be understood that the antenna ports transmitting the common pilot signals are different, and the locations of the resource elements carrying the common pilot signals may not only be the same.

Optionally, different base stations or cells may adopt different configurations, for example, cell A adopts (Q, Q), then cell B adopts (-Q, Q) or (Q, -Q). Take three long orthogonal codes as an example, for example, 1

The density is three times that of the existing one, and may be three adjacent pilot resources. The common pilot signal carried by three resource elements in a resource element group in FIG. 2 may be 1 e ^j27l/3 β ^μ

1 e ^j47/3 e ^jl7/3

*Q, other pilot density, and so on.

The following mainly introduces the case where the number of antenna ports is 2, 4, and 1. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the subcarriers corresponding to the resource elements in the frequency domain in the foregoing dual group The number of the above/representing the resource element corresponding to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift ) mod6. where Z = 0, A symbb — 3 if p

= 0,l"."2O RB l,

0,1,2 if ^ = 0and/ = 0

3,4,5 if ^ = 0and/≠0 where 3,4,5 if = land/ = 0 0,1,2 if p = 1 and /≠ 0 where

Wherein the above indicates the number of downlink resource blocks in the system, and the above ^ is a downlink The number of OFDM symbols in the slot, the above p indicates the number of the antenna port, the above indicates the number of the corresponding cell, and the above m indicates the sequence number of the pilot sequence in one pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . , , = 0, A b _ 3 if ^ {0,l} _;

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; k = 6m + (v + v _shift )mod6 where / = 0,l,AQ _b — 3,A _b — 2 if p

' -

Cell

A 丄mod 6

The above ^ represents the number of downlink resource blocks in the system, the above; v _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^ represents the number of the corresponding cell, and the above m represents a pilot column The serial number of the pilot sequence within the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein, = 6 + (v + v _shift ) mod6 _; wherein Z = 0, l, 2, A^ _b — 3, — 2, — 1 if / E {0,1} _;

= 0,l"..X — 1

Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Wherein, ^hift ^ ^^ ^{mo d 6} where the above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, and the above p represents the number of the antenna port, and the above A^i represents the corresponding The number of the cell, the above W _s represents the slot number in one subframe, and the above _m represents the sequence number of the pilot sequence in one pilot column in the frequency domain.

In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . where / = 0, l, 2, A^ _b — 3, — 2, — 1 if p E {0,1

A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, the above is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, the above m A sequence number indicating the frequency sequence of a pilot sequence within a pilot column. In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to orthogonal frequency division multiplexing The number of the OFDM symbol; otherwise, k = 6m + (v + v _shift ) mod6 where , , = 0, ^^ _ 3 if p≡ {0,1

among them

0,1,2 if = 0 and / = 0

v =

Where 3,4,5 if = 0 and /≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, A _symb is the number of OFDM symbols in a downlink slot, and p represents the antenna port No. The above A^i indicates the number of the corresponding cell, and the above m indicates the sequence number of the pilot sequence in one pilot sequence in the frequency domain.

It can be seen that, in this embodiment, the user equipment receives the common pilot signal, and performs channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is represented by Y resources in the subframe. The common pilot signal carried by the first resource element among the elements is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource element of the X resource elements The common pilot signal is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are any of the X resource elements. Two resource elements, wherein the above Y and the above X are positive integers greater than one. Since the access device employs a resource element group including at least two resource elements to carry a common pilot signal having the same or a transformed relationship, the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. A good signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio. Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. To facilitate a better understanding and implementation of the above solution, the following is illustrated by some specific application scenarios.

Referring to FIG. 4, FIG. 4 is a schematic flowchart diagram of a common pilot signal transmission method according to an embodiment of the present invention. As shown in FIG. 4, a common pilot signal transmission method provided by an embodiment of the present invention may include the following contents:

401. The base station generates a common pilot signal.

402. The base station sends the common pilot signal.

403. The user equipment receiving base station sends the common pilot signal, and performs channel measurement and/or data demodulation based on the common pilot signal.

The common pilot signal is carried by the Y resource element groups in the subframe, and the common pilot signal carried by the Y resource resource elements is equivalent to the common resource carried by the second resource element among the X resource elements. The pilot signal, or the common pilot signal carried by the first resource element of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where The resource element and the second resource element are any two of the X resource elements, wherein the Y and the X are positive integers greater than one. Resource element.

It can be understood that the antenna port of the common pilot signal transmitted by the base station is different, and the location of the resource element carrying the common pilot signal may not only be the same.

The common pilot signals carried by the X resource elements may be the same, that is, the repetition of the single ticket, and the common pilot signal carried by the first resource element among the X resource elements included in the resource element group may be the X resources. The common pilot signal carried by the second resource element among the elements is obtained by multiplying two long or three long or other long orthogonal codes (of course, it can also be transformed by other means). The first resource element and the second resource element may be adjacent in a time domain or a frequency domain. Taking two long orthogonal codes as an example, for example, a common pilot element carried by the resource element R0 in the lowest frequency domain in a certain resource element group in FIG. 2 (each resource element group in FIG. 2 includes three resource elements) The signal Q, the modulation symbol carried on the two resource elements in the frequency domain may be (Q, Q) or (-Q, Q) or (Q, -Q), in which case, it may be a standard protocol. Or the system presets, or the base station broadcasts the user equipment.

Take three long orthogonal codes as an example.

1 1 ΐ] \ι ₆ ^ ^叫\ι ₆ ^ ₆ ^

For example, the 3⁄4 port is J, the density is three times existing, and it can be three adjacent pilot resources. The common pilot signal carried by three resource elements in a resource element group in FIG. 2 can be

1 e ^j47r/3 e ^jl7r/3

*Q, other pilot density, and so on. The following mainly introduces the case where the number of antenna ports is 2, 4, and 1. In some embodiments of the present invention, if the number of antenna ports is 2, the positions of the resource elements in the Y resource element groups are represented by a binary group (k, I), and the above two groups (k, k in ή) The number of the corresponding subcarrier of the resource element in the frequency domain, and the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . , , , = 0 , A _3 if p E {0,1}

= 0,l"..X — 1

Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where, ,=0, ^^_3 if p E {0,1

' -

A ¹ mod 6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; wherein k = 6m + (v + v _shift ) mod6 .

^; ^ is the number of OFDM symbols in a downlink time slot, the above p represents the number of the antenna port, the above A ^ i represents the number of the corresponding cell, and the above m represents the serial number of the pilot sequence in the frequency domain in a pilot sequence . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to orthogonal frequency division multiplexing The number of the OFDM symbol; where k = 6m + (v + v _shift ) mod6 . where / = 0,1,2, _ 3,A^ _b _ 2,A^; _b _l if pe {θ,Ι

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the pilot sequence in one pilot column in the frequency domain. serial number. In some embodiments of the present invention, if the number of antenna ports is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; wherein k = 6m + (v + v _shift ) mod6 .

= 0,l"."2 ' _B ^L — O —

Shift A, ID ¹ mod 6

The above ^ indicates the number of downlink resource blocks in the system, the above is the number of OFDM symbols in one downlink slot, the above p indicates the number of the antenna port, the above A^i indicates the number of the corresponding cell, and the above W _s indicates the number of the intra-frame. The slot number, the above _m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, /), and the resource elements in the above-mentioned binary group, /) are in the frequency The number of the corresponding subcarrier on the domain, the above / indicates the number of the orthogonal OFDM symbol corresponding to the resource element; where, = 6 + (v + v _shift ) mod6 _;

—丄 if p E {0,1

v _shift = A mod6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where, , = 0, ^^—3 if _P ≡m _;

among them

0,1,2 if = 0 and / = 0

v =

Where 3,4,5 if = 0 and /≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, the above Λ^;^ is the number of OFDM symbols in one downlink slot, and the above p represents the antenna The number of the port, the above A^i indicates the number of the corresponding cell, and the above m indicates the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

Figure 5-a~3⁄4 5-d gives examples of several common pilot patterns. Figure 5-a illustrates a common pilot pattern of three times the density of three antenna ports (three resource elements composing one resource element group), where the pilot resource elements of port 0 and port 1 are not located. overlapping. Figure 5-b illustrates a common pilot pattern of three times the density of antenna port 0 (three resource elements composing one resource element group), and Figure 5-c illustrates a double density of antenna port 0 (2 resources) The common pilot pattern of elements constituting one resource element group; FIG. 5-d illustrates a common pilot pattern of another double density (two resource elements constituting one resource element group) of antenna port 0. Figure 5-a~3⁄4 5-d shows the common pilot pattern as an example only, in practical applications. The location of the medium common pilot resources can also be adaptively adjusted.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. The embodiment of the invention provides a reference signal transmission method, which may include:

Notifying the user of the resource configuration of the common pilot signal of the device;

The resource configuration of the common pilot signal includes a common pilot signal port configuration, a common pilot signal subframe configuration, and a common pilot signal configuration, where the number of ports configured by the common pilot signal port configuration is N, and the reference signal is The configuration is configured to utilize the Y resource element group bearers in the subframe, where the common pilot signal carried by the first resource element is equivalent to the common pilot carried by the second resource element among the X resource elements. The signal, or the common pilot signal carried by the first resource element of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element And the second resource element is any two of the above X resource elements;

Transmitting a common pilot to the user equipment according to the notified resource configuration of the common pilot signal Signal.

In some embodiments of the present invention, the foregoing X resource elements are consecutive X resource elements in the time domain and/or the frequency domain.

The following mainly introduces the case where the number of antenna ports is 2, 4, and 1. In some embodiments of the present invention, if the number of antenna ports N is 2, the positions of the resource elements in the Y resource element groups are represented by a binary group (k, I), and the above two groups (k, k in the ή Indicates the number of the subcarrier corresponding to the resource element in the frequency domain, and the above/ indicates the number of the orthogonal OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift ) mod6 .

' -

Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain.

In some embodiments of the present invention, if the number of antenna ports N is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. The number of the corresponding subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where , , = 0, ^^ _ 3 if p E {0,1

Cell

Where v _sh if _t ⁼ ^iiT ^mod6 _;

Wherein, the above indicates the number of downlink resource blocks in the system, where Λ^;^ is the number of OFDM symbols in one downlink slot, p represents the number of the antenna port, and A^i represents the number of the corresponding cell, and the above m represents one The sequence number of the pilot sequence in the pilot column in the frequency domain.

In some embodiments of the present invention, if the number of antenna ports N is 2, the above Y resource element groups are Chinese The location of the source element is represented by a binary group, the number of subcarriers corresponding to the resource element in the frequency domain in the above-mentioned binary group, /), and the number corresponding to the orthogonal frequency division multiplexing OFDM symbol of the resource element ; k = 6m + (v + v _shift )mod6.

^ ,l,^ _b -3,^ sym _b b-2 if p {0,1 = 0,l"."2' - 1

0 if p two 0and/ = 0

3 if p two 0and/≠0

3 if p = 1 and / 2

0 if = land/≠0

The above ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents a pilot column. The sequence number of the pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports N is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. The number of the corresponding subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift ) mod6. where / = ₀ , 1, 2, ^ ;^— —l if p E

{0,1

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the pilot sequence in one pilot column in the frequency domain. serial number.

In some embodiments of the present invention, if the number of antenna ports N is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the above-mentioned binary group, /) are in the frequency domain. The number of the corresponding subcarrier, the above / indicating the resource element corresponding to the number of the orthogonal frequency division multiplexing OFDM symbol; wherein k = 6m + (v + v _shift ) mod6 .

= 0,l"..X — 1 /u-

Shift A, ID ¹ mod 6

The above ^ represents the number of downlink resource blocks in the system, the above A^^b is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above W _s represents one The slot number in the subframe, where _m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports N is 1, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group ( , /) are in the frequency domain. The number of the corresponding subcarrier is above, and the above/ indicates the number of the orthogonal OFDM symbol corresponding to the resource element; wherein, = 6 + (v + v _shift ) mod6 _;

i P {θ,Ι

v _shift = A mod6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports N is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. The number of the corresponding subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift ) mod6. where , , = 0, A b_3 if^{ 0,l} _;

among them

0,1,2 if = 0and/ = 0

v =

Where 3,4,5 if = 0and/≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, A _symb is the number of OFDM symbols in one downlink slot, and p represents the number of the antenna port The above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in one pilot sequence in the frequency domain.

Related devices for implementing the above schemes are also provided below. Referring to FIG. 6, an embodiment of the present invention provides an access device 600, which may include:

Generator 610 and transmitter 620.

a generator 610, configured to generate a common pilot signal; The transmitter 620 is configured to send the common pilot signal, where the common pilot signal is carried by the Y resource element groups 7 in the subframe, and each of the Y resource element groups includes X resources. The common pilot signal carried by the first resource element among the X resource elements is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the X resource elements The common pilot signal carried by the first resource element is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are the foregoing X Any two resource elements of the resource elements, wherein the above Y and the above X are positive integers greater than one. Resource element.

The following mainly introduces the case where the number of antenna ports is 2, 4, and 1.

In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . where, = 0, A^ _b — 3 if ^ E {0,l} _;

A _symb is the number of OFDM symbols in one downlink time slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6. where , , = 0, A b_3 if ^{0 , l} _;

Wherein, A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, the above Λ^; ^ is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, and the above A^i represents the corresponding cell No. The above m represents the sequence number of the pilot sequence in the pilot frequency column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the above Y resource element groups are Chinese The location of the source element is represented by a binary group, /), the number of the subcarriers corresponding to the resource element in the frequency domain in the above dual group, and the number corresponding to the orthogonal OFDM symbol of the resource element. Where k = 6m + (v + v _shift ) mod6 . where / = 0,l,2, _b — 3, A^ _b — 2, _b — 1 if e {0,l} _;

The above, _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the pilot sequence in one pilot column in the frequency domain. serial number.

In some embodiments of the present invention, if the number of antenna ports is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein, = 6 + (v + v _shift ) mod6 _;

m = 0,1 .X — l

Shift =— A ^A , ID丄mod 6

The above ^ represents the number of downlink resource blocks in the system, the above A^^b is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above W _s represents one The slot number in the subframe, where _m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain.

In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . where / = ₀ , 1, ₂ , if p {0,1

1

Where = 0,l"..X —

0 if = 0 and / 0

v =

3 if p = 0 and I 0 Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where , , = 0, ^^ _ 3 if p E {0,1

Of which, shift A 丄 mod 6

It can be seen that, in this embodiment, the access device 600 (for example, a base station) generates a common pilot signal; and sends the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe,

, the above X resource elements The common pilot signal carried by the first resource element is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource element of the X resource elements The common pilot signal is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are any two of the X resource elements. Resource element. Since the access device employs a resource element group including at least two resource elements to carry a common pilot signal having the same or a transformed relationship, the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. A good signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. Referring to FIG. 7, an embodiment of the present invention provides a user equipment 700, which may include:

Receiver 710 and processor 720.

The receiver 710 is configured to receive a common pilot signal.

The processor 720 is configured to perform channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in a subframe, where the Y resource elements are The common pilot signal carried by the common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the first resource element of the X resource elements, The common pilot signal carried by the second resource element of the X resource elements is transformed, and the first resource element and the second resource element are any two resource elements of the X resource elements, and the Y and The above X is a positive integer greater than one. Resource element.

The common pilot signals carried by the X resource elements may be the same, that is, the repetition of the single ticket, and the common pilot signals carried by the first resource elements among the X resource elements included in the resource element group may be the X The common pilot signal carried by the second resource element among the resource elements is obtained by multiplying two long or three long or other long orthogonal codes (of course, it can also be transformed by other means). The first resource element and the second resource element may be adjacent in a time domain or a frequency domain.

In some embodiments of the present invention, if the number of antenna ports is 2, the positions of the resource elements in the Y resource element groups are represented by a binary group (k, I), and the above two groups (k, k in ή) The number of the corresponding subcarrier of the resource element in the frequency domain, and the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . , , , = 0 , A b _ 3 if ^ {0,l} _;

A _symb is the number of OFDM symbols in one downlink time slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to orthogonal frequency division multiplexing The number of the OFDM symbol; where, = 6 + (v + v _shift ) mod6 where Z = 0, ^V _sb _3 if ^ E{0,l} _:

' -

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6.

If p E |o,i

= 0,l"..X — 1

Wherein, shift A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, where is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, and the above A^i represents the number of the corresponding cell, The above m represents the sequence number of the pilot sequence in one pilot column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6 . where / = 0, l, 2, A^ _b — 3, — 2, — 1 if p E {0,1

A ¹ mod 6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 4, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol;

= A ' ID丄 mod 6

^ denotes the number of downlink resource blocks in the system, the above Λ^;^ is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above W _s represents a sub The slot number in the frame, where _m represents the sequence number of the pilot sequence in the pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift ) mod6. where / = ₀ , 1, ₂ , ^^_ ₃ ,^;^_ ₂ ,^^^_1 if E{0,l} _;

among them

0 if = 0and/ = 0

v =

Wherein 3 if = 0and/≠0 where A 丄 mod 6 where ^ represents the number of downlink resource blocks in the system, A _symb is the number of OFDM symbols in one downlink slot, and p represents the number of the antenna port, the above A^ i denotes the number of the corresponding cell, and m denotes the sequence number of the pilot sequence in the pilot sequence in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6. where , , = 0, A b_3 if p E { 0,1} = 0,l"..X — 1

Where ^ shift A 丄mod 6

The above indicates the number of downlink resource blocks in the system, where the number of OFDM symbols in one downlink slot, the p indicates the number of the antenna port, the A^i indicates the number of the corresponding cell, and the m indicates a pilot column. The sequence number of the pilot sequence in the frequency domain.

It can be seen that, in this embodiment, the user equipment 700 receives the common pilot signal, and performs channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is represented by Y elements in the subframe, and the above X The common pilot signal carried by the first resource element among the resource elements is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource of the X resource elements. The common pilot signal carried by the element is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are among the X resource elements Any two resource elements, where the above Y and the above X are common pilot signals greater than 1 or having a transformed relationship, so that the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. The signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. Referring to FIG. 8, an embodiment of the present invention provides an access device 800, which may include:

a processor 801, a memory 802, and an antenna 803; a signal; transmitting the common pilot signal by using an antenna 803, wherein the common pilot signal is used by a subframe The Y resource element group 7 in the above, each of the Y resource element groups includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equivalent a common pilot signal carried by the second resource element among the X resource elements, or a common pilot signal carried by the first resource element of the X resource elements, by the first of the X resource elements The common pilot signal carried by the two resource elements is transformed, wherein the first resource element and the second resource element are any two resource elements of the X resource elements, where the Y and the X are greater than 1 Positive integer. Resource element.

In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; where k = 6m + (v + v _shift ) mod6 . , , , = 0, A b_ 3 if p E {0,1}

= 0,l"..X — 1

Where, ,=0, ^^_3 if p E {0,1

' -

= 0,l"."2 ' _B ^L

Shift A, ID ¹ mod 6

—丄 if p E {0,1

v _shift =A mod6 The above indicates the number of downlink resource blocks in the system, the A _symb is the number of OFDM symbols in one downlink slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the above m represents a pilot. The sequence number of the pilot sequence in the column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 1, the location of the resource elements in the Y resource element groups is represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element

Where, , = 0, ^^—3 if _P ≡m _;

among them

0,1,2 if = 0 and / = 0

v =

It can be seen that, in this embodiment, the access device 800 (for example, a base station) generates a common pilot signal; and sends the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe,

The common pilot signal carried by the first resource element is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource element of the X resource elements The common pilot signal that is carried by the common pilot signal carried by the second resource element of the X resource elements is transformed, where the first resource element and the second resource element are any two of the X resource elements. Resource elements. Since the access device employs a resource element group including at least two resource elements to carry a common pilot signal having the same or a transformed relationship, the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. A good signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios.

Referring to FIG. 9, an embodiment of the present invention provides a user equipment 900, which may include:

a processor 901, a memory 902, and an antenna 903; receiving a common pilot signal; performing channel measurement and/or demodulation of data based on the common pilot signal, wherein the common pilot signal is represented by Y resource elements in a subframe a common pilot signal carried by the Y resource elements, which is equivalent to a common pilot signal carried by a second resource element among the X resource elements, or the X resources. The common pilot signal carried by the first resource element in the element is transformed by a common pilot signal carried by the second resource element of the X resource elements, the first resource element and the second resource The element is any two of the X resource elements, and the Y and the X are positive integers greater than one. Resource element.

It can be understood that the antenna ports transmitting the common pilot signals are different, and the locations of the resource elements carrying the common pilot signals may not only be the same. The common pilot signals carried by the X resource elements may be the same, that is, the repetition of the single ticket, and the common pilot signal carried by the first resource element among the X resource elements included in the resource element group may be the X resources. The common pilot signal carried by the second resource element among the elements is multiplied by two long or three long or other The long orthogonal code is obtained (of course, it can also be obtained by other means). The first resource element and the second resource element may be adjacent in a time domain or a frequency domain.

A _symb is the number of OFDM symbols in one downlink time slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above / indicates that the resource element corresponds to the number of the orthogonal frequency division multiplexing OFDM symbol; Where = 6 + (v + v _shift ) mod6 where Z = 0, ^V _sb _3 if ^ E{0,l} _:

' -

The above A _symb is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, the above A^i represents the number of the corresponding cell, and the above m represents the sequence number of the pilot sequence in the frequency domain in the frequency domain. . In some embodiments of the present invention, if the number of antenna ports is 2, the locations of the resource elements in the Y resource element groups are represented by a binary group, and the resource elements in the dual group, /) are in the frequency domain. Corresponding to the number of the subcarrier, the above/representing the number of the orthogonal OFDM symbol corresponding to the resource element; wherein k = 6m + (v + v _shift ) mod6. where if p E

|o,i

= 0,l"..X — 1

= A ' ID丄 mod 6

among them

0 if = 0and/ = 0

v =

Where ^ shift A 丄mod 6

It can be seen that, in this embodiment, the user equipment 900 receives the common pilot signal; performs channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is represented by Y elements in the subframe, and the above X The common pilot signal carried by the first resource element among the resource elements is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource of the X resource elements. The common pilot signal carried by the element is transformed by a common pilot signal carried by the second resource element of the X resource elements, where the first resource element and the second resource element are among the X resource elements Any two resource elements, where the above Y and the above X are common pilot signals greater than 1 or having a transformed relationship, so that the above solution is advantageous for obtaining a common pilot signal independently with a single resource element. The signal-to-noise ratio is beneficial to effectively improve the channel estimation performance of the user in the case of low signal-to-noise ratio.

Further, providing multiple resource location designs for carrying common pilot signals is beneficial to satisfy the channel estimation performance requirements of multiple scenarios. Referring to FIG. 10, an embodiment of the present invention provides a communication system, which may include: an access device 1010 and a user device 1020.

The access device 1010 is configured to generate a common pilot signal, where the common pilot signal is sent, where the common pilot signal is carried by Y resource element groups in a subframe, where the Y resource element groups Each resource element group includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equivalent to the second resource element carried by the X resource elements. The common pilot signal, or the common pilot signal carried by the first resource element of the X resource elements, is transformed by a common pilot signal carried by the second resource element of the X resource elements, where The first resource element and the second resource element are any two resource elements of the X resource elements, where the Y and the X are positive integers greater than one;

The user equipment 1020 is configured to receive a common pilot signal sent by the access device 1010, and perform channel measurement and/or data demodulation based on the common pilot signal.

Wherein, A 丄 mod 6 where the above indicates the number of downlink resource blocks in the system, the above Λ^; ^ is the number of OFDM symbols in one downlink slot, the above p represents the number of the antenna port, and the above A^i represents the corresponding cell No. The above m represents the sequence number of the pilot sequence in the pilot frequency column in the frequency domain. In some embodiments of the present invention, if the number of antenna ports is 2, the above Y resource element groups are Chinese The position of the source element is represented by a binary group, /), the number of subcarriers corresponding to the resource element in the frequency domain is represented by the above-mentioned binary group, and the above/representing the resource element corresponding to orthogonal frequency division multiplexing

The number of the OFDM symbol; where k = 6m + (v + v _shift ) mod6 . where / = 0,l,2, _b - 3, A^ _b - 2, _b - 1 if e {0,l} _;

m = 0,1 .X — l

Shift =— A ^A , ID丄mod 6

1

Where = 0,l"..X —

0 if = 0 and / 0

v =

Where , , = 0, ^^ _ 3 if p E {0,1

Of which, shift A 丄 mod 6

It can be seen that, in this embodiment, the access device (for example, the base station) generates a common pilot signal; and sends the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe, the Y

Among the above X resource elements The common pilot signal carried by the first resource element is equivalent to the common pilot signal carried by the second resource element among the X resource elements, or the first resource element carried by the X resource elements. The common pilot signal is transformed by the common pilot signal carried by the second resource element of the foregoing X resource elements, where the first resource element and the second resource element are the same as the bearer in the X resource elements or have the same Transforming the common pilot signal of the relationship, so that the above scheme is advantageous for obtaining a better signal-to-noise ratio than using a single resource element to independently transmit the common pilot signal, thereby facilitating effective improvement of the user with low SNR. Channel estimation performance.

The access device mentioned in the embodiments of the present invention may be a base station or other access network device having a wireless access function of the user equipment.

The embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program includes some or all of the steps of the common pilot signal transmission method according to the foregoing method embodiment.

In the above embodiments, the descriptions of the various embodiments are different, and the details are not described in detail in an embodiment, and the related descriptions of other embodiments can be referred to.

In the several embodiments provided herein, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The above integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may contribute to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the above-described methods of various embodiments of the present invention. The foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents; and the modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

1. A public pilot signal transmission method, characterized by including:

Generate common pilot signals;

Send the common pilot signal, wherein the common pilot signal consists of Y resource elements in the subframe

The common pilot signal carried by the first resource element among the X resource elements is equal to the common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the second resource element among the X resource elements. The common pilot signal carried by the first resource element is transformed from the common pilot signal carried by the second resource element among the X resource elements, wherein, the first resource element and the second resource The elements are any two resource elements among the X resource elements, wherein the Y and the X are positive integers greater than 1.

2. The method according to claim 1, characterized in that the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

3. The method according to claim 2, characterized in that if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Among them, , = 0,A b_ 3 if ^ {0,l} _;

Among them, ^ shift A 丄mod 6 wherein, the said represents the number of downlink resource blocks in the system, the said is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding The number of the cell, where m represents the sequence number in the frequency domain of the pilot sequence within a pilot column.

4. The method according to claim 2, characterized in that if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element

Among them, , = 0, ^^ _ 3 if p E {0,1

cell

Among them, v _sh if _t ⁼ ^iiT ^mod6 _;

Wherein, the represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, The m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

5. The method according to claim 2, characterized in that if the number of antenna ports is 2, the Y The position of the resource element in each resource element group is represented by a tuple. The tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain. The / represents that the resource element corresponds to orthogonal frequency division multiplexing. Number of OFDM symbols; k = 6m + (v + v _shift )mod6. Where, / _{= 0} ,l, V: _ib — ₃ , _s s:ym _b b _ 2 if p {0,1

cell

where N mod 6, the A^J represents the number of downlink resource blocks in the system, the said is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell The number of m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

6. The method according to claim 2, characterized in that if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, and ^ in the tuples represents resources. The number of the subcarrier corresponding to the element in the frequency domain, the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, = 6 + (v + v _shift )mod6 _; where, / = 0, 1,2, — 3,A symbb— 2,A sym _lb b— 1

, the _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the pilot sequence in a pilot column. Frequency domain sequence number.

7. The method according to claim 2, characterized in that if the number of antenna ports is 4, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6.

= 0,l"..X — 1

Where, V _shift ^{= A} ^ ^mod6 _;

•DL

Wherein, the said represents the number of downlink resource blocks in the system, the A^^b is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, The W _s represents the time slot number within a subframe, and the m represents the sequence number in the frequency domain of the pilot sequence within a pilot column.

8. The method according to claim 2, characterized in that if the number of antenna ports is 1, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6.

if _P ≡ {ο,ι

Where, _ift = mod6 Wherein, said represents the number of downlink resource blocks in the system, said _symb is the number of OFDM symbols in a downlink time slot, said p represents the number of the antenna port, said A^i represents the number of the corresponding cell, and said m Indicates the sequence number of the pilot sequence in a pilot column in the frequency domain.

9. The method according to claim 2, characterized in that if the number of antenna ports is 1, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, Z = 0, A^ _b — 3 if ^ E {0,l} _;

in

0,1,2 if = 0 and / = 0

v =

where 3,4,5 if = 0 and /≠0 where A 丄mod 6 where the ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in a downlink time slot, and the p represents the antenna The number of the port, the A^i represents the number of the corresponding cell, and the m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

10. A public pilot signal transmission method, characterized by including:

Receive public pilot signals;

Channel measurement and/or data demodulation is performed based on the common pilot signal, wherein the common pilot signal is carried by Y resource element groups in the subframe, and each resource element in the Y resource element groups The group includes X resource elements, and the common pilot signal carried by the first resource element among the X resource elements is equal to the common pilot signal carried by the second resource element among the X resource elements. frequency The signal, or the common pilot signal carried by the first resource element among the X resource elements, is obtained by transforming the common pilot signal carried by the second resource element among the X resource elements, wherein, The first resource element and the second resource element are any two resource elements among the X resource elements, wherein the Y and the X are positive integers greater than 1.

11. The method according to claim 10, characterized in that the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

12. The method according to claim 11, characterized in that if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Among them, , = 0,A b_3 if^{0,l} _;

' -

s _shift = ¹ mod6 _;

The number of source blocks, the _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, the m represents the pilot number in a pilot column The sequence number of the frequency sequence in the frequency domain.

13. The method according to claim 11, characterized in that if the number of antenna ports is 2, the The position of the resource element in the Y resource element group is represented by a tuple. The tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain. The / represents that the resource element corresponds to the orthogonal frequency division complex. Use the number of OFDM symbols; where, k = 6m + (v + v _shift )mod6. Where, Z = 0,A^ _b — 3 if ^ E{0,l} _;

The _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the frequency domain of the pilot sequence in a pilot column. serial number.

14. The method according to claim 11, characterized in that if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, / _{= 0} , 1,^^^_ ₃ , ^_2 if E{0,l} _; = 0,l"."2' _B ^L - 1·

The ^ represents the number of downlink resource blocks in the system, the ^ represents the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^ represents the number of the corresponding cell, and the m represents a The sequence number of the pilot sequence in the pilot column in the frequency domain.

15. The method according to claim 11, characterized in that, if the number of antenna ports is 2, the positions of resource elements in the Y resource element groups are represented by tuples, 0, and the tuples, /) In represents the number of the subcarrier corresponding to the resource element in the frequency domain, and / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Where, / = 0,l,2,A^ _b — 3, V _b — 2, — 1 if p E {0,1} ' ^L -

16. The method according to claim 11, characterized in that if the number of antenna ports is 4, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The corresponding sub-menu in the frequency domain indicates/indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element.

The number of OFDM symbols in the row time slot, the p represents the number of the antenna port, and the A^i represents the corresponding 'J The number of the area, the W _s represents the time slot number within a subframe, and the m represents the sequence number of the pilot sequence in the frequency domain within a pilot column.

17. The method according to claim 11, characterized in that if the number of antenna ports is 1, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent resource elements. The number of the corresponding subcarrier in the frequency domain, the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, / = ₀ , 1,2, — 3, — 2, — 1 if^ E{0,l} _;

in

0 if = 0and/ = 0

v =

where 3 if = 0and/≠0 where A 丄mod 6 where the ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, so The A^i represents the number of the corresponding cell, and the m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

18. The method according to claim 11, characterized in that if the number of antenna ports is 1, the positions of resource elements in the Y resource element groups are represented by tuples, and the resource elements in the tuples represent The number of the corresponding subcarrier in the frequency domain, the / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Among them, , = 0, ^^ _ 3 if p E {0,1

in, A 丄

Its mod 6 wherein, the said represents the number of downlink resource blocks in the system, the said is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, so The above m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

19. An access device, characterized by: including:

Generator, used to generate common pilot signals;

A transmitter, configured to send the common pilot signal, wherein the common pilot signal is carried by the source element in the subframe, and the common pilot signal carried by the first resource element among the X resource elements is equivalent to The common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the first resource element among the X resource elements, is composed of the X resource elements The common pilot signal carried by the second resource element in is obtained by transforming, wherein the first resource element and the second resource element are any two resource elements among the X resource elements, where, the γ and the X are positive integers greater than 1.

20. The access device according to claim 19, characterized in that the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

21. The access device according to claim 20, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; Where, = 6 + (v + v _shift )mod6 Where, Z = 0, ^V _sb _3 if ^ E{0,l} _:

22. The access device according to claim 20, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, Z = 0,A^ _b — 3 if ^ E{0, l} _; = 0,l"..X — 1 0,1 if = 0and/ = 0

3,4 if = 0and/≠0

v =

3,4 if p = land/二 0

0,1 if = land/≠0 where, shift = _ O i ' ID d6

Wherein, the said represents the number of downlink resource blocks in the system, the A^^b is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, The m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

23. The access device according to claim 20, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Where, / ₌

if p {0,1 . -

A ¹ mod 6 Wherein, said represents the number of downlink resource blocks in the system, said _symb is the number of OFDM symbols in a downlink time slot, said p represents the number of the antenna port, said A^i represents the number of the corresponding cell, and said m Indicates the sequence number of the pilot sequence in a pilot column in the frequency domain.

24. The access device according to claim 20, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, / = _0,1,2 , — 3, — 2, — 1 if ^ E {0,l} _;

25. The access device according to claim 20, characterized in that,

If the number of antenna ports is 4, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the subcarrier corresponding to the resource element in the frequency domain. Wave number: The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where: k = 6m + (v + v _shift )mod6.

in,

D.L.

m = 0,1 N RR

v _shift = A mod0;

The -^DL represents the number of downlink resource blocks in the system, the 7 _s ^ _b is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell. , the W _s represents the time slot number within a subframe, and the _m represents the sequence number of the pilot sequence in the frequency domain within a pilot column.

26. The access device according to claim 20, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, /), and the tuple, /) represents the corresponding sub-unit of the resource element in the frequency domain. The number of the carrier, the / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Among them, if _Ρ ≡ {ο,ι

in

0 if = Oand/ = 0

where 3 if = Oand/≠0 where shift A 丄mod 6 where the ^ represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in a downlink time slot, and the p represents the number of the antenna port, The A^i represents the number of the corresponding cell, and the m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

27. The access device according to claim 20, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element;

Among them, ,=0, ^^_3 if p E {0,1

Among them, v _shift ^=A ^ ^mod6 _;

Wherein, the said represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding small The number of the area, where m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

28. A user equipment, characterized by: including:

Receiver, used to receive public pilot signals;

A processor, configured to perform channel measurement and/or demodulation of data based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe, where the Y resource resources The common pilot signal carried by the element is equal to the common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the first resource element among the X resource elements. The frequency signal is converted from the common pilot signal carried by the second resource element among the X resource elements, and the first resource element and the second resource element are any two of the X resource elements. resource elements, and the Y and the X are positive integers greater than 1.

29. The user equipment according to claim 28, characterized in that the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

30. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, , = 0,A b_ 3 if ^ {0,l} _;

where, v _sh i _ft

mod 6

Wherein, the ^ represents the number of downlink resource blocks in the system, the 7V _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, so The above m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

31. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + y + v _shift )mod6. Where, Ζ = 0, Λ^ — 3 if ^ E {0,l} _;

32. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 2, the positions of the resource elements in the Y resource element groups are determined by Tuple, 0 means, the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, and the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 · E |o,i

cell

A 丄 mod 6

Said represents the number of downlink resource blocks in the system, said _symb is the number of OFDM symbols in a downlink time slot, said p represents the number of the antenna port, said A^i represents the number of the corresponding cell, and said m represents a The sequence number of the pilot sequence in the pilot column in the frequency domain.

33. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 · Among them, / = _0,1 , ₂ ,^ ^_ ₃ ,^;^_ ₂ ,^^^_1 if p E {0,1

l

Among them, = 0, "."2' _R ^L — 1

34. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 4, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element;

Among them, ^ shift A 丄mod 6

Wherein, the W represents the number of downlink resource blocks in the system, the A^^b is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell. , the W _s represents the time slot number within a subframe, and the m represents the sequence number of the pilot sequence in the frequency domain within a pilot column.

35. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6.

if _P ≡ {ο,ι

Among them, A 丄 mod 6 Where, the said represents the number of downlink resource blocks in the system, the said is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell number, where m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

36. The user equipment according to claim 29, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 where, , = 0,^^—3 if _P ≡m _;

in

0,1,2 if = 0 and / = 0

v =

37. An access device, characterized by: including:

Processor, memory and antenna;

frequency signal; transmitting the common pilot signal through the antenna, wherein the common pilot signal is carried by the source element in the subframe, and the common pilot signal carried by the first resource element among the X resource elements is equivalent to The common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the first resource element among the X resource elements, is composed of the X resource elements The common pilot signal carried by the second resource element in is obtained by transforming, wherein the first resource element and the second resource element are any two resource elements among the X resource elements, where, the γ and the X are positive integers greater than 1.

38. The access device according to claim 37, characterized in that the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

39. The access device according to claim 38, characterized in that, If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Among them, , = 0,A b_3 if^{0,l} _;

40. The access device according to claim 38, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. where, , = 0,A b_3 if^{0,l} _; = 0,l"."2' _R ^L — 1·

The A^^b is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^ represents the number of the corresponding cell, and the m represents the pilot sequence in a pilot column. Frequency domain sequence number.

41. The access device according to claim 38, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple, /) represents the subcarrier corresponding to the resource element in the frequency domain. The number of / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Where, / = 0,1, Λ ^ — 3, Λ _2 if p {0,1 ' ^L -

42. The access device according to claim 38, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6.

if _P ≡ {ο,ι

43. The access device according to claim 38, characterized in that, If the number of antenna ports is 4, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6.

Wherein, the A^ _B represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the corresponding cell The number, the W _s represents the time slot number within a subframe, and the m represents the sequence number of the pilot sequence in the frequency domain within a pilot column.

44. The access device according to claim 38, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift )mod6. in, /

if _Ρ ≡ {ο,ι where = 0,l"..X — 1

45. The access device according to claim 38, characterized in that,

Among them, ,=0, ^^_3 if p E {0,1 where= 0,l"..X — 1

0,1,2 if = 0and/ = 0

where 3,4,5 if = 0and/≠0 where A ¹ mod 6 where the said represents the number of downlink resource blocks in the system, the Λ^ sy;m^b is a downlink The number of OFDM symbols in the time slot, the p represents the number of the antenna port, the A^i represents the number of the corresponding cell, and the m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

46. A user equipment, characterized by: including:

A processor, a memory and an antenna; receiving a common pilot signal; performing channel measurement and/or data demodulation based on the common pilot signal, where the common pilot signal is carried by Y resource element groups in the subframe, Wherein, the common pilot signal carried by the Y resource elements is equal to the common pilot signal carried by the second resource element among the X resource elements, or the common pilot signal carried by the X resource elements. The common pilot signal carried by the first resource element is transformed from the common pilot signal carried by the second resource element among the X resource elements, and the first resource element and the second resource element are For any two resource elements among the X resource elements, the Y and the X are positive integers greater than 1.

47. The user equipment according to claim 46, wherein the X resource elements are 5 consecutive X resource elements in the time domain and/or frequency domain.

48. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; . Among them, = 6m + (v + v _shift )mod6. Among them, Z = 0,A^ _b — 3 if ^ E {0,l} _; Ganshi m = 0,l,...,2 - ^L - l .

49. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element;

Among them, ,=0, ^^_3 if p E {0,1

' -

50. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. where, = 0,l,^ _b -3,^ _b -2 if ^ E{0,l} _;

51. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the subcarrier corresponding to the resource element in the frequency domain. The wave number / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift )mod6. Among them, / = ₀ ,1, ₂ ,^^_ ₃ , ^；^_ ₂ ,^^^_1 if E{0,l} _;

52. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 4, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift )mod6.

= 0,l"..X — 1

Among them, V _shift ^=A ^ ^mod6 _;

•DL

53. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where k = 6m + (v + v _shift )mod6.

if _P ≡ {ο,ι

54. The user equipment according to claim 47, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, Z = 0,A^ _b — 3 if ^ E {0, l} _;

in

0,1,2 if = 0 and / = 0

v =

55. A communication system, characterized by including:

Access device, configured to generate a common pilot signal; send the common pilot signal, wherein the common pilot signal is carried by Y resource element groups in the subframe, each of the Y resource element groups The resource element group includes X resource elements. The common pilot signal carried by the first resource element among the X resource elements is equal to the common pilot signal carried by the second resource element among the X resource elements. The pilot signal, or the common pilot signal carried by the first resource element among the X resource elements, is converted from the common pilot signal carried by the second resource element among the X resource elements, where, The first resource element and the second resource element are any two resource elements among the X resource elements, wherein the Y and the X are positive integers greater than 1;

User equipment is configured to receive a common pilot signal sent by the access device, and perform channel measurement and/or data demodulation based on the common pilot signal.

56. The communication system according to claim 55, wherein the X resource elements are X consecutive resource elements in the time domain and/or frequency domain.

57. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6. Among them, , = 0,A b _ 3 if ^ {0,l} _;

is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the representation corresponds to ' J The number of the area, where m represents the sequence number of the pilot sequence in the frequency domain within a pilot column.

58. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, , = 0,A b _ 3 if ^ {0,l} _;

59. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Ε{ο,ι

60. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 2, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, / = ₀ ,i, ₂ ,

if _P ≡ {ο,ι = 0,l"."2 ' _B ^L

61. The communication system according to claim 56, characterized in that,

Where, ^hift ^ ^^ ^{mod 6} where, the said represents the number of downlink resource blocks in the system, the _symb is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, the A^ i represents the number of the corresponding cell, the W _s represents the time slot number within a subframe, and the m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.

62. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 1, the position of the resource element in the Y resource element group is represented by a tuple, 0, and the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, The / indicates the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; where, k = 6m + (v + v _shift )mod6. Where, / = 0,l,2,A^ _b — 3, — 2, — 1 if ^ E {0,l} _;

63. The communication system according to claim 56, characterized in that,

If the number of antenna ports is 1, the positions of the resource elements in the Y resource element groups are determined by two Tuple, 0 means, the tuple in the tuple represents the number of the subcarrier corresponding to the resource element in the frequency domain, and the / represents the number of the orthogonal frequency division multiplexing OFDM symbol corresponding to the resource element; k = 6m + (v + v _shift )mod6 · Where, ,=0,^^—3 if _P ≡m _;

in

0,1,2 if = 0and/ = 0

v =

where 3,4,5 if = 0and/≠0 where

The ^ represents the number of downlink resource blocks in the system, the Λ^;^ is the number of OFDM symbols in a downlink time slot, the p represents the number of the antenna port, and the A^i represents the number of the corresponding cell, The m represents the sequence number of the pilot sequence in a pilot column in the frequency domain.