CN106550397B

CN106550397B - Method, device and system for transmitting wireless data

Info

Publication number: CN106550397B
Application number: CN201510595818.7A
Authority: CN
Inventors: 牛乐宏; 黄勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2020-04-14
Anticipated expiration: 2035-09-17
Also published as: CN106550397A; WO2017045486A1

Abstract

A method for transmitting wireless data is disclosed that facilitates reducing bandwidth requirements. In the method, a wireless data compression device obtains first frequency domain data, wherein the first frequency domain data comprises N groups of data, and N is an integer greater than or equal to 1; the wireless data compression device determines whether the ith group of data carries a payload or not according to a threshold value and the ith group of data in the N groups of data, wherein the ith group of data is any group of data in the N groups of data; the wireless data compression device determining that the ith group of data does not carry a payload; the wireless data compression device obtains a message according to the ith group of data, wherein the message is generated according to the first frequency domain data, the message does not carry the ith group of data, and the message comprises indication information which is used for indicating that the ith group of data does not carry a payload; and the wireless data compression device sends the message.

Description

Method, device and system for transmitting wireless data

Technical Field

The present invention relates to communication technologies, and in particular, to a method for transmitting wireless data, a wireless data compression apparatus, a wireless data decompression apparatus, and a system for transmitting wireless data.

Background

In order to reduce the deployment difficulty of the radio access network, the function of the radio base station may be implemented by splitting into a baseband unit (BBU) and a Radio Remote Unit (RRU), and such an architecture including the BBU and the RRU is called a green radio access network (C-RAN) architecture based on centralized processing, cooperative radio, and real-time cloud computing architecture.

Taking an example that a BBU in a C-RAN architecture sends wireless data to an RRU, the BBU is configured to perform baseband processing on data from an evolved packet core (hereinafter, referred to as an evolved packet core, abbreviated as EPC) to obtain time domain data. And the BBU sends the time domain data obtained by the BBU to the RRU. And the RRU processes the time domain data to obtain a radio frequency signal. And the RRU sends the obtained radio frequency signals through an antenna. After a C-RAN architecture is introduced into a radio access network, data after baseband digitization is transmitted between a BBU and an RRU, and a large bandwidth needs to be occupied, and further improvement is needed.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a method for transmitting wireless data, which is helpful for reducing the bandwidth requirement.

The embodiment of the invention also provides a wireless data compression device, a wireless data decompression device and a system for transmitting wireless data.

The technical scheme provided by the embodiment of the invention is as follows.

In a first aspect, a method for transmitting wireless data is provided, including:

the wireless data compression device obtains first frequency domain data, wherein the first frequency domain data comprises N groups of data, and N is an integer greater than or equal to 1;

the wireless data compression device determines whether the ith group of data carries a payload or not according to a threshold value and the ith group of data in the N groups of data, wherein the ith group of data is any group of data in the N groups of data;

the wireless data compression device determining that the ith group of data does not carry a payload;

the wireless data compression device obtains a message according to the ith group of data, wherein the message is generated according to the first frequency domain data, the message does not carry the ith group of data, and the message comprises indication information which is used for indicating that the ith group of data does not carry a payload;

and the wireless data compression device sends the message.

In a first possible implementation manner of the first aspect, each of the N groups of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1;

the wireless data compression device determines whether the ith group of data in the N groups of data carries a payload according to a threshold value and the N groups of data, wherein the step of determining whether the ith group of data carries the payload comprises the following steps:

the wireless data compression device determines the L₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Vector of sub-carrier corresponding to each data of dataMagnitude of amplitude, L₂Less than or equal to L₁。

With reference to the foregoing first aspect, a second possible implementation manner of the first aspect is further provided, where each group of data in the N groups of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1;

the wireless data compression device determines the L₁L corresponding to each data₁Whether the average value of the values of the subcarriers is greater than the threshold value, L₁The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

With reference to the first aspect, the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, a third possible implementation manner of the first aspect is further provided, where the obtaining, by the wireless data compression device, a packet according to the ith group of data includes:

the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the first compression indication information is the indication information;

the wireless data compression device carries the k of the effective load in the N groups of data according to the first compression indication information₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

With reference to the third possible implementation manner of the first aspect, a fourth possible implementation manner of the first aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data.

With reference to the first aspect, the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, further providing a fifth possible implementation manner of the first aspect, where the obtaining, by the wireless data compression device, a packet according to the ith group of data includes:

the wireless data compression device generates second compression indication information according to the ith group of data, wherein the second compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the second compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information;

the wireless data compression device compresses the k according to the second compression indication information₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data.

With reference to the first aspect, the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, further providing a sixth possible implementation manner of the first aspect, where the obtaining, by the wireless data compression device, a packet according to the ith group of data includes:

the wireless data compression device generates third compression indication information according to the ith group of data, wherein the third compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, the third compression indication information comprises the group identifier of the ith group of data, and the third compression indication information is the indication information;

the wireless data compression device carries the k of the effective load in the N groups of data according to the third compression indication information₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

With reference to the first aspect, or any one of the first possible implementation manner to the sixth possible implementation manner of the first aspect, a seventh possible implementation manner of the first aspect is further provided, where the obtaining, by the wireless data compression apparatus, the first frequency domain data includes:

the wireless data compression device receives first time domain data, wherein the first time domain data is first antenna carrier data obtained from first equipment or second equipment, the first equipment is equipment capable of realizing a digital baseband processing function, and the second equipment is equipment capable of realizing a radio frequency function;

and the wireless data compression device performs discrete Fourier transform on the first time domain data to obtain the first frequency domain data.

With reference to the first aspect, the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, there is further provided an eighth possible implementation manner of the first aspect, further including:

the wireless data compression device obtains second frequency domain data, wherein the second frequency domain data comprises M groups of data, and M is an integer greater than or equal to 1;

the wireless data compression device determines whether the jth data carries a payload or not according to a threshold value and jth data in the M groups of data, wherein the jth data is any one group of data in the M groups of data;

the wireless data compression device determines that the jth data set does not carry a payload.

With reference to the eighth possible implementation manner of the first aspect, a ninth possible implementation manner of the first aspect is further provided, where theEach set of data in the M sets of data includes L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

the wireless data compression device determines whether the jth group of data carries a payload according to a threshold value and jth group of data in the M groups of data, wherein the determining includes:

the wireless data compression device determines the L₃Whether or not the individual data includes L₄Data whose number is greater than the threshold value, L₄The data with the number value larger than the threshold value is L₄The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₄The value of the subcarrier corresponding to each data of each data is L₄Value of vector magnitude, L, of subcarrier corresponding to each data of the data₄Less than or equal to L₃。

With reference to the eighth possible implementation manner of the first aspect, a tenth possible implementation manner of the first aspect is further provided, where each group of data in the M groups of data includes L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

the wireless data compression device determines the L₃L corresponding to each data₃Whether the average value of the values of the subcarriers is greater than the preset threshold value, L₃The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

With reference to the eighth possible implementation manner of the first aspect, the ninth possible implementation manner of the first aspect, or the tenth possible implementation manner of the first aspect, an eleventh possible implementation manner of the first aspect is further provided, where the obtaining, by the wireless data compression device, a packet according to the ith group of data includes:

the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether a payload is carried or not, and the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload;

the wireless data compression device generates second compression indication information according to the jth group of data, wherein the second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried or not, and the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry the payload;

the wireless data compression device carries k of the effective load in the N groups of data according to the first compression indication information and the second compression indication information₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

With reference to the eleventh possible implementation manner of the first aspect, a twelfth possible implementation manner of the first aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data;

the second compressed indication information is an M-bit bitmap, a position of a jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and a value of the jth bit is indication information corresponding to the group identifier of the jth group of data.

In a second aspect, a method for transmitting wireless data is provided, comprising:

a wireless data decompression device receives a message, wherein the message is generated according to first frequency domain data, the first frequency domain data comprises N groups of data, N is an integer greater than or equal to 1, the message does not carry ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, the message comprises indication information, and the indication information is used for indicating that the ith group of data does not carry a payload;

and the wireless data decompression device decompresses the message according to the indication information included in the message to obtain decompressed first frequency domain data, wherein the decompressed first frequency domain data includes the ith group of data.

In a first possible implementation manner of the second aspect, the packet includes first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the k group of data does not carry a payload₁Is an integer greater than or equal to 0;

the wireless data decompression device decompresses the packet according to the indication information included in the packet, and obtaining decompressed first frequency domain data includes:

the wireless data decompression device acquires the k from the load of the message according to the first compression indication information included in the message₁Group data;

the wireless data decompression device restores the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information;

the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

With reference to the first possible implementation manner of the second aspect, a second possible implementation manner of the second aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data.

With reference to the second aspect, a third possible implementation manner of the second aspect is further provided, where the packet includes second compression indication information and k carrying a payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0;

the wireless data decompression device acquires the k from the load of the message according to the second compression indication information included in the message₁Group data;

the wireless numberAccording to the value of N and said k₁Restoring the ith group of data by the group identification of each group of data in the group of data;

the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

With reference to the second aspect, a fourth possible implementation manner of the second aspect is further provided, where the packet includes third compression indication information and k carrying a payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is an integer greater than or equal to 0;

the wireless data decompression device restores the ith group of data according to the group identifier of the ith group of data included in the third compression indication information;

With reference to the second aspect, the first possible implementation manner of the second aspect, the second possible implementation manner of the second aspect, the third possible implementation manner of the second aspect, or the fourth possible implementation manner of the second aspect, a fifth possible implementation manner of the second aspect is further provided, and the method further includes:

the wireless data decompression device carries out inverse discrete Fourier transform on the decompressed first frequency domain data to obtain first time domain data;

the wireless data decompression device sends the first time domain data to a first device or a second device, wherein the first device is a device capable of realizing a digital baseband processing function, and the second device is a device capable of realizing a radio frequency function.

With reference to the second aspect, a sixth possible implementation manner of the second aspect is further provided, where the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry a jth group of data, the jth group of data does not carry a payload, the jth group of data is one of the M groups of data, M is an integer greater than or equal to 1, and the indication information is further used to indicate that the jth group of data does not carry a payload;

the method further comprises the following steps:

and the wireless data decompression device decompresses the message according to the indication information included in the message to obtain decompressed second frequency domain data, wherein the decompressed second frequency domain data includes the jth group of data.

With reference to the sixth possible implementation manner of the second aspect, a seventh possible implementation manner of the second aspect is further provided, where the packet includes a first payload, a second payload, and a number of frequency domain data, where the number of frequency domain data is a number of payloads included in the packet, and the first payload includes first compression indication information and k-th data of the N groups of data that carry payloads₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether to carry a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the second load comprises second compression indication information and k groups of data carrying payloads in the M groups of data₂The second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, and each group in the M groups of dataIndicating information corresponding to a group identifier of data is used for indicating whether the data carries a payload, indicating information corresponding to a group identifier of a jth group of data is used for indicating that the jth group of data does not carry a payload, the second frequency domain data comprises the M group of data, M is an integer greater than or equal to 1, the indicating information comprises the second compression indicating information and the first compression indicating information, and k is an integer greater than or equal to 1₁And k is said₂Are integers greater than or equal to 0;

the decompressing device of the wireless data decompresses the packet according to the indication information included in the packet, and obtaining decompressed second frequency domain data includes:

the wireless data decompression device acquires the k from a second load of the message according to the second compression indication information included in the message₂Group data;

the wireless data decompression device restores the jth group of data according to the indication information corresponding to the group identifier of the jth group of data;

the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

With reference to the seventh possible implementation manner of the second aspect, an eighth possible implementation manner of the second aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data;

In a third aspect, a wireless data compression device is provided, which includes:

a first obtaining unit configured to obtain first frequency-domain data, where the first frequency-domain data includes N groups of data, and N is an integer greater than or equal to 1;

a first determining unit, configured to determine whether an ith group of data carries a payload according to a threshold value and the ith group of data in the N groups of data, where the ith group of data is any one of the N groups of data;

the first determining unit is further configured to determine that the ith group of data does not carry a payload;

a second obtaining unit, configured to obtain a packet according to the ith group of data, where the packet is generated according to the first frequency domain data, and the packet does not carry the ith group of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload;

and the sending unit is used for sending the message.

In a first possible implementation manner of the third aspect, each of the N groups of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁The first determining unit is specifically configured to:

determining the L₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Value of vector magnitude, L, of subcarrier corresponding to each data of the data₂Less than or equal to L₁。

With reference to the third aspect, a second possible implementation manner of the third aspect is further provided, where each of the N groups of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁The first determining unit is specifically configured to:

determining the L₁L corresponding to each data₁Whether the average value of the values of the subcarriers is greater than the threshold value, L₁The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, a third possible implementation manner of the third aspect is further provided, and the second obtaining unit is specifically configured to:

generating first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the first compression indication information is the indication information;

according to the first compression indication information, carrying k of the effective load in the N groups of data₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

With reference to the third possible implementation manner of the third aspect, a fourth possible implementation manner of the third aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data.

With reference to the third aspect, the first possible implementation manner of the third aspect or the second possible implementation manner of the third aspect, further provides a fifth possible implementation manner of the third aspect, where the second obtaining unit is specifically configured to:

generating second compression indication information according to the ith group of dataThe second compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the second compression indication information includes k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information;

according to the second compression indication information, the k is processed₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data.

With reference to the third aspect, the first possible implementation manner of the third aspect or the second possible implementation manner of the third aspect, further provides a sixth possible implementation manner of the third aspect, where the second obtaining unit is specifically configured to:

generating third compression indication information according to the ith group of data, wherein the third compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, the third compression indication information comprises the group identifier of the ith group of data, and the third compression indication information is the indication information;

according to the third compression indication information, carrying k of the effective load in the N groups of data₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

With reference to the third aspect, or any one of the first possible implementation manner to the sixth possible implementation manner of the third aspect, a seventh possible implementation manner of the third aspect is further provided, where the wireless data compression apparatus further includes a receiving unit,

the receiving unit is configured to receive first time domain data, where the first time domain data is first antenna carrier data obtained from a first device or a second device, the first device is a device capable of implementing a digital baseband processing function, and the second device is a device capable of implementing a radio frequency function;

With reference to the third aspect, the first possible implementation manner of the third aspect or the second possible implementation manner of the third aspect, there is further provided an eighth possible implementation manner of the third aspect, where the wireless data compression apparatus further includes:

a third obtaining unit configured to obtain second frequency-domain data, where the second frequency-domain data includes M sets of data, and M is an integer greater than or equal to 1;

a second determining unit, configured to determine whether a jth group of data carries a payload according to a threshold value and the jth group of data in the M groups of data, where the jth group of data is any one of the M groups of data;

the second determining unit is further configured to determine that the jth group of data does not carry a payload.

With reference to the eighth possible implementation manner of the third aspect, a ninth possible implementation manner of the third aspect is further provided, where each group of data in the M groups of data includes L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

the second determining unit is specifically configured to:

determining the L₃Whether or not the individual data includes L₄Data whose number is greater than the threshold value, L₄The data with the number value larger than the threshold value is L₄The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₄The value of the subcarrier corresponding to each data of each data is L₄Value of vector magnitude, L, of subcarrier corresponding to each data of the data₄Less than or equal to L₃。

With reference to the eighth possible implementation manner of the third aspect, a tenth possible implementation manner of the third aspect is further provided,each set of data in the M sets of data comprises L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

the second determining unit is specifically configured to:

determining the L₃L corresponding to each data₃Whether the average value of the values of the subcarriers is greater than the preset threshold value, L₃The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

With reference to the eighth possible implementation manner of the third aspect, the ninth possible implementation manner of the third aspect, or the tenth possible implementation manner of the third aspect, an eleventh possible implementation manner of the third aspect is further provided, and the second obtaining unit is specifically configured to:

generating first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether a payload is carried or not, and the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload;

generating second compression indication information according to the jth group of data, wherein the second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried, and the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry the payload;

according to the first compression indication information and the second compression indication information, carrying k of the effective load in the N groups of data₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprisesThe number of the first payload, the second payload and the frequency domain data, the number of the frequency domain data is the number of the payload included in the packet, and the first payload carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

With reference to the eleventh possible implementation manner of the third aspect, a twelfth possible implementation manner of the third aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data;

In a fourth aspect, a wireless data decompression apparatus is provided, including:

a receiving unit, configured to receive a packet, where the packet is a packet generated according to first frequency domain data, where the first frequency domain data includes N groups of data, where N is an integer greater than or equal to 1, the packet does not carry an ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload;

a decompressing unit, configured to decompress the packet according to the indication information included in the packet, to obtain decompressed first frequency domain data, where the decompressed first frequency domain data includes the ith group of data.

First possibility in the fourth aspectIn an implementation manner of (1), the packet includes first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the k group of data does not carry a payload₁Is an integer greater than or equal to 0;

the decompression unit is specifically configured to:

according to the first compression indication information included in the message, the k is obtained from the load of the message₁Group data;

restoring the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information;

according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

With reference to the first possible implementation manner of the fourth aspect, a second possible implementation manner of the fourth aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data.

With reference to the fourth aspect, a third possible implementation manner of the fourth aspect is further provided, where the packet includes second compression indication information and k carrying a payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification for each group of data in group dataSaid k is₁Is an integer greater than or equal to 0;

the decompression unit is specifically configured to:

according to the second compression indication information included in the message, the k is obtained from the load of the message₁Group data;

according to the value of N and k₁Restoring the ith group of data by the group identification of each group of data in the group of data;

With reference to the fourth aspect, a fourth possible implementation manner of the fourth aspect is further provided, where the packet includes third compression indication information and k carrying a payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is an integer greater than or equal to 0;

the decompression unit is specifically configured to:

restoring the ith group of data according to the group identifier of the ith group of data included in the third compression indication information;

according to the group identification of the ith group of data and the k₁And recombining the N groups of data by using the group identification of each group of data in the group data to obtain the decompressed first frequency domain data.

With reference to the fourth aspect, the first possible implementation manner of the fourth aspect, the second possible implementation manner of the fourth aspect, the third possible implementation manner of the fourth aspect, or the fourth possible implementation manner of the fourth aspect, a fifth possible implementation manner of the fourth aspect is further provided, where the wireless data decompression apparatus further includes:

an obtaining unit, configured to perform inverse discrete fourier transform on the decompressed first frequency domain data to obtain first time domain data;

a sending unit, configured to send the first time domain data to a first device or a second device, where the first device is a device capable of implementing a digital baseband processing function, and the second device is a device capable of implementing a radio frequency function.

With reference to the fourth aspect, a sixth possible implementation manner of the fourth aspect is further provided, where the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry a jth group of data, the jth group of data does not carry a payload, the jth group of data is one of the M groups of data, M is an integer greater than or equal to 1, the indication information is further used to indicate that the jth group of data does not carry a payload, and the decompression unit is further used to:

decompressing the packet according to the indication information included in the packet, to obtain decompressed second frequency domain data, where the decompressed second frequency domain data includes the jth data.

With reference to the sixth possible implementation manner of the fourth aspect, a seventh possible implementation manner of the fourth aspect is further provided, where the packet includes a first payload, a second payload, and a number of frequency domain data, where the number of frequency domain data is a number of payloads included in the packet, and the first payload includes first compression indication information and k-th data of the N groups of data that carry payloads₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether to carry a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the second load comprises second compression indication information and k groups of data carrying payloads in the M groups of data₂Group data, the second compression indication information includes a group identifier of each group data in the M groups of data and indication information corresponding to the group identifier of each group data in the M groups of data,the indication information corresponding to the group identifier of each group of data in the M groups of data is used to indicate whether to carry a payload, the indication information corresponding to the group identifier of the jth group of data is used to indicate that the jth group of data does not carry a payload, the second frequency domain data includes the M groups of data, M is an integer greater than or equal to 1, the indication information includes the second compression indication information and the first compression indication information, and k is an integer greater than or equal to 1₁And k is said₂Are integers greater than or equal to 0;

the decompression unit is specifically configured to:

according to the second compression indication information included in the message, the k is obtained from the second load of the message₂Group data;

restoring the jth data according to the indication information corresponding to the group identifier of the jth data;

according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

With reference to the seventh possible implementation manner of the fourth aspect, an eighth possible implementation manner of the fourth aspect is further provided, where the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data;

In a fifth aspect, a system for transmitting wireless data is provided, where the system includes a wireless data compression apparatus and a wireless data decompression apparatus, where the wireless data compression apparatus is a wireless data compression apparatus provided in any one of the above third aspect or any one of the possible implementations of the third aspect; the wireless data decompression device is a wireless data decompression device provided in the fourth aspect or any one of the possible implementation manners of the fourth aspect.

Through the above scheme, when determining that group data not carrying a payload, for example, the ith group data does not carry a payload, the wireless data compression device according to the embodiment of the present invention does not add the group data not carrying a payload to a message when generating the message according to the first frequency domain data, that is, the message obtained by the wireless data compression device does not include the ith group data. And the wireless data compression device sends the message, wherein the message comprises indication information, and the indication information is used for indicating that the ith group of data does not carry a payload. After receiving the message, the wireless data decompression device decompresses the message according to the indication information included in the message to obtain decompressed first frequency domain data, wherein the decompressed first frequency domain data includes the ith group of data. Therefore, the wireless data compression device does not need to transmit the group data which does not carry the effective load, and the group data which does not carry the effective load does not need to occupy the corresponding bandwidth, thereby being beneficial to reducing the requirement of the bandwidth.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1(a) is a schematic diagram of a network scenario for transmitting wireless data.

Fig. 1(b) is a schematic diagram of a subcarrier represented in a resource grid format.

Fig. 2 is a schematic diagram of a network scenario for transmitting wireless data according to an embodiment of the present invention.

Fig. 3(a) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention.

Fig. 3(b) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention.

Fig. 3(c) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention.

Fig. 4(a) is a schematic diagram of a wireless data decompression device according to an embodiment of the present invention.

Fig. 4(b) is a schematic diagram of a wireless data decompression device according to an embodiment of the present invention.

Fig. 5 is a flowchart of a wireless data transmission method according to an embodiment of the present invention.

Fig. 6 is a flowchart of a wireless data transmission method according to an embodiment of the present invention.

Fig. 7(a) is a schematic diagram of an N-bit bitmap according to an embodiment of the present invention.

Fig. 7(b) is a schematic diagram of second compression indication information according to an embodiment of the present invention.

Fig. 7(c) is a schematic diagram of a format of a packet according to an embodiment of the present invention.

Fig. 7(d) is a schematic diagram of another format of a message according to the embodiment of the present invention.

Fig. 8 is a flowchart of a wireless data transmission method according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a network scenario for transmitting wireless data according to a second embodiment of the present invention.

Fig. 10(a) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention.

Fig. 10(b) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention.

Fig. 10(c) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention.

Fig. 11(a) is a schematic diagram of a wireless data decompression device according to a second embodiment of the present invention.

Fig. 11(b) is a schematic diagram of a wireless data decompression device according to a second embodiment of the present invention.

Fig. 12 is a flowchart of a wireless data transmission method according to a second embodiment of the present invention.

Fig. 13 is a flowchart of a wireless data transmission method according to a second embodiment of the present invention.

Fig. 14 is a schematic diagram of a system for transmitting wireless data according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

Fig. 1(a) is a schematic diagram of a network scenario for transmitting wireless data. The network shown in fig. 1(a) includes an Evolved Packet Core (EPC), a baseband unit (BBU) 10, a Radio Remote Unit (RRU) 13, and an antenna connected to the RRU 13. In the network shown in fig. 1(a), BBU10 receives data, such as Internet data, transmitted through the EPC. The BBU10 performs baseband processing on the received data to obtain frequency domain data. The frequency domain data may be subcarriers represented by a resource grid (english name resource grid) in the 3GPP TS36.211 standard, as shown in fig. 1 (b). The resource grid shown in fig. 1(b) includes one resource block (resource block) composed of 7 consecutive periods, and one period of each resource block includes 12 resource units (resource elements) that are consecutive in the frequency domain. Each resource element corresponds to a subcarrier. In other words, the resource block shown in fig. 1(b) contains 7 columns, each column representing one cycle of one resource block. The resource block of each cycle contains 12 resource elements, i.e. the smallest cell in fig. 1(b) represents one resource element. One subcarrier represented in a complex number may be carried in the one resource element. If the plurality of subcarriers in the frequency domain are 0, the subcarrier with value 0 still occupies a resource element with value 0. The BBU10 performs Inverse discrete fourier transform (IDFT for short) on resource grid shown in fig. 1(b), and generates time domain data. The BBU10 encapsulates the time domain data in a Common Public radio interface (CPRI for short), and obtains a CPRI frame. The BBU10 sends the CPRI frame to the RRU 13 through the CPRI provided to the BBU 10. The CPRI transmission is used for transmission between the BBU10 and the RRU 13, which requires a large amount of bandwidth, because even if only a small number of subcarriers transmit the payload in the frequency domain, the time domain data obtained after IDFT processing is performed on the subcarriers that do not carry the payload in the frequency domain is also represented as valid data in the time domain. That is, the time domain data transmitted between the BBU10 and the RRU 13 does not distinguish between the payload and the invalid payload, and the time domain data transmitted between the BBU10 and the RRU 13 needs to be transmitted with a constant bandwidth, which results in a high network construction cost.

In view of the above problems, the present application proposes a solution that helps to reduce the bandwidth required for transmitting wireless data. According to the solution, a wireless data compression device obtains first frequency domain data, the first frequency domain data including N sets of data, N being an integer greater than or equal to 1; the wireless data compression device determines whether the ith group of data in the N groups of data carries a payload or not according to a threshold value and the N groups of data, wherein the ith group of data is any group of data in the N groups of data; the wireless data compression device determining that the ith group of data does not carry a payload; the wireless data compression device obtains a message according to the ith group of data, wherein the message is generated according to the first frequency domain data, the message does not carry the ith group of data, and the message comprises indication information which is used for indicating that the ith group of data does not carry a payload; and the wireless data compression device sends the message to a wireless data decompression device.

In one implementation, the wireless data compression apparatus may be deployed in a first device, and accordingly, the wireless data decompression apparatus may be deployed in a second device in communication with the first device, or the wireless data decompression apparatus may be deployed as a separate device between the first device and the second device, or the wireless data decompression apparatus may be deployed between the first device and the second device and in communication with a device of the second device. The first device is a device capable of implementing a digital baseband processing function, such as a BBU or a device capable of implementing a Radio Equipment Control (REC). The second device is a device capable of implementing a Radio frequency function, such as an RRU or an apparatus capable of implementing a Radio Equipment (RE) function.

In another implementation, the wireless data compression apparatus may be deployed in a second device, and accordingly, the wireless data decompression apparatus may be deployed in a first device in communication with the second device, or the wireless data decompression apparatus may be deployed as a separate device between the second device and the first device, or the wireless data decompression apparatus may be deployed between the second device and the first device and in communication with the device of the first device. The first device is a device capable of implementing a digital baseband processing function, such as a BBU or a device capable of implementing a REC function. The second device is a device capable of implementing a radio frequency function, such as an RRU or an apparatus capable of implementing an RE function.

Example one

Fig. 2 is a schematic diagram of a network scenario for transmitting wireless data according to an embodiment of the present invention. The network shown in fig. 2 may be used to transmit wireless data. In the network shown in fig. 2, the first device 20 is able to communicate with devices in the EPC (not shown in fig. 2). The first device 20 communicates with the converging side compression device 21. The convergence side compression device 21 communicates with the access side compression device 22, for example, the convergence side compression device 21 may communicate with the access side compression device 22 via a packet network, and the convergence side compression device 21 may communicate with the access side compression device 22 via an optical fiber. The convergence side compression device 21 includes a first CPRI210, a Discrete Fourier Transform (DFT) module 211, a wireless data compression apparatus 212, a first interface 213, a wireless data decompression apparatus 214, and an IDFT module 215. The access side compression device 22 includes a second CPRI220, a second DFT module 225, a wireless data compression apparatus 224, a second interface 223, a wireless data decompression apparatus 222, and a first IDFT module 221. The first CPRI210 may be the same as the second CPRI220, the first interface 213 may be the same as the second interface 223, the first DFT module 211 may be the same as the second DFT module 225, the second IDFT module 215 may be the same as the first IDFT module 221, the wireless data compression device 212 may be the same as the wireless data compression device 224, and the wireless data decompression device 214 may be the same as the wireless data decompression device 222.

In one implementation, the first device 20 sends time domain data to the first DFT module 211 via the first CPRI210 of the aggregate compression device 21. The first DFT module 211 performs DFT on the time domain data to generate frequency domain data, wherein the frequency domain data includes at least one group of data. The first DFT module 211 transmits the generated frequency domain data to the wireless data compression device 212. The wireless data compression device 212 compresses the received frequency domain data to generate a message, where the message does not include an i-th group of data that does not carry a payload in the frequency domain data, the message includes indication information, the indication information is used to indicate that the i-th group of data does not carry a payload, and the i-th group of data is any group of data in the at least one group of data. The wireless data compression device 212 sends the message to the second interface 223 via the first interface 213. The wireless data decompression device 222 of the access-side compression apparatus 22 receives the message through the second interface 223. The wireless data decompression device 222 decompresses the packet to restore the i-th group of data that does not carry the payload. The wireless data decompressing device 222 obtains decompressed frequency domain data according to the group data carrying the payload and the ith group data not carrying the payload in the at least one group of data included in the packet. The wireless data decompression device 222 sends the decompressed frequency domain data to the first IDFT module 221. The first IDFT module 221 performs an IDFT operation on the decompressed frequency domain data to generate time domain data. The first IDFT module 221 transmits the time domain data to the second device 23 through the second CPRI 220.

In another implementation, the second device 23 may send a message to the first interface 213 of the aggregation-side compression device 21 through the second CPRI220, the second DFT module 225, the wireless data compression apparatus 224, and the second interface 223 included in the access-side compression device 22, where the message does not include the group data that does not carry the payload, and the message includes indication information, where the indication information is used to indicate the group data that does not carry the payload. The wireless data decompression device 214 of the convergence side compression apparatus 21 decompresses the packet received through the first interface 213 to obtain decompressed frequency domain data. The wireless data decompressing device 214 sends the time domain data corresponding to the decompressed frequency domain data to the first device 20 through the second IDFT module 215 and the first CPRI interface.

In the network scenario shown in fig. 2, the communication between the first device 20 and the second device 23 can be divided into a downlink direction and an uplink direction. In one implementation, the downstream direction is a direction in which the first device 20 sends data to the second device 23 through the convergence side compression device 21 and the access side compression device 22, and correspondingly, the upstream direction is a direction in which the second device 23 sends data to the first device 20 through the access side compression device 22 and the convergence side compression device 21. In another implementation, the downlink direction is a direction in which the second device 23 sends data to the first device 20 through the access-side compression device 22 and the convergence-side compression device 21, and correspondingly, the uplink direction is a direction in which the first device 20 sends data to the second device 23 through the convergence-side compression device 21 and the access-side compression device 22.

The convergence side compression unit 21 and the intake side compression unit 22 in fig. 2 enable bidirectional communication between the first unit 20 and the second unit 23. If the convergence side compression device 21 and the connection side compression device 22 realize unidirectional communication between the first device 20 and the second device 23, the convergence side compression device 21 and the connection side compression device 22 may include partial structures in fig. 2, such as: if the convergence side compression device 21 and the access side compression device 22 realize that the first device 20 sends data or information to the second device 23, the convergence side compression device 21 includes a first CPRI210, a first DFT module 211, a wireless data compression apparatus 212, and a first interface 213, and accordingly, the access side compression device 22 includes a second CPRI220, a second interface 223, a wireless data decompression apparatus 222, and a first IDFT module 221. If the access-side compression device 22 and the convergence-side compression device 21 realize that the second device 23 sends data or information to the first device 20, the access-side compression device 22 includes a second CPRI220, a second DFT module 225, a wireless data compression apparatus 224 and a second interface 223, and accordingly, the convergence-side compression device 21 includes a first CPRI210, a first interface 213, a wireless data decompression apparatus 214 and a second IDFT module 215.

For example, the first DFT module 211 may be a circuit with DFT function, an integrated circuit, a Field Programmable Gate Array (FPGA), a Central Processing Unit (CPU), software or code capable of implementing DFT. The second DFT module 225 may be a DFT enabled circuit, integrated circuit, FPGA, CPU, software or code capable of implementing a DFT. The second IDFT module 215 may be a circuit having IDFT functionality, an integrated circuit, an FPGA, a CPU, software or code capable of implementing IDFT. The first IDFT module 221 may be a circuit having an IDFT function, an integrated circuit, an FPGA, a CPU, software or code capable of implementing an IDFT.

Fig. 3(a) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention. The wireless data compression device shown in fig. 3(a) may be any one of the wireless data compression devices in the network shown in fig. 2. The wireless data compression apparatus shown in fig. 3(a) includes: a processor 301, a memory 302, a communication interface 303, and a communication bus 304. The processor 301, memory 302 and communication interface 303 communicate over a communication bus 304. The processor 301 may be a Central Processing Unit (CPU), a Network Processor (NP), or other integrated circuit. The memory 302 may be used to store programs or code. Optionally, the memory 302 may also be used to store indication information, such as: one or more of the compression indication information mentioned in the embodiments of the present invention, such as the first compression indication information and the second compression indication information, are not illustrated one by one here.

The processor 301 performs the following operations according to the executable instructions included in the program read from the memory 302.

The processor 301 obtains the first frequency domain data through the communication interface 303. Wherein the first frequency domain data includes N sets of data, N being an integer greater than or equal to 1. Each of the N sets of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1. L is₁The value of (d) may be 12, but may be other values, which are not illustrated here.

The processor 301 determines whether the ith group of data carries a payload according to a threshold value and the ith group of data in the N groups of data, where the ith group of data is any one of the N groups of data. Wherein, the value of i is an integer which is more than 0 and less than or equal to N.

For example, the processor 301 may determine whether the ith group of data carries the payload according to the threshold value and the ith group of data in the N groups of data in the following two ways. The processor 301 may determine the threshold value according to the method in the embodiment corresponding to fig. 6, and details of the method for determining the threshold value are not repeated herein.

In a first manner, the determining, by the processor 301, whether the ith group of data in the N groups of data carries a payload according to the threshold value and the N groups of data includes: processor 301 determines the L₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Value of vector magnitude, L, of subcarrier corresponding to each data of the data₂Is greater than 0 and less than or equal to L₁Is an integer of (1). If processor 301 determines that L is not included in the ith data set₂If the number of the data is greater than the threshold value, the processor 301 determines that the ith group of data does not carry a payload. If processor 301 determines that L is included in the ith data set₂Number of numerical values greater than said threshold valueAccordingly, the processor 301 determines that the ith group of data carries a payload.

In a second mode, the determining, by the processor 301 according to the threshold value and the N groups of data, whether the i-th group of data in the N groups of data carries a payload includes: processor 301 determines the L₁L corresponding to each data₁Whether the average value of the values of the subcarriers is greater than the threshold value, L₁The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers. If processor 301 determines the L₁L corresponding to each data₁If the average value of the values of the sub-carriers is greater than the threshold value, the processor 301 determines that the i-th group of data carries a payload. If processor 301 determines the L₁L corresponding to each data₁If the average value of the values of the subcarriers is less than or equal to the threshold value, the processor 301 determines that the ith group of data does not carry a payload.

Processor 301 determines that the ith set of data does not carry a payload. Wherein the processor 301 may determine that the ith set of data does not carry a payload in any of the two manners described above. Processor 301 may determine whether each of the N sets of data carries a payload in any of the two ways described above. The embodiment of the present invention is described by taking the ith group of data as an example. The method for determining whether other group data in the N group data carries a payload is not described herein again.

The processor 301 obtains a packet according to the ith group of data, where the packet is generated according to the first frequency domain data, and the packet does not carry the ith group of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload.

The processor 301 may obtain the packet according to the ith data set in the following three ways.

In a first manner, the obtaining, by the processor 301, a packet according to the ith group of data includes: the processor 301 generates first compression indication information according to the ith group of data, wherein the first compression indication information is used for indicatingThe first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the first compression indication information is the indication information; the processor 301 processes k carrying payload in the N groups of data according to the first compression indication information₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0. The first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

In the second mode, the processor 301 obtaining the packet according to the ith group of data includes: the processor 301 generates second compression indication information according to the ith group of data, where the second compression indication information is used to indicate a group identifier carrying a payload in the N group of data, and the second compression indication information includes k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information; the processor 301 processes the k according to the second compression indication information₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data. Thus, the storage space occupied by the indication information in the memory 302 can be reduced, which is beneficial to improving the processing speed and efficiency.

In a third mode, the processor 301 obtaining the packet according to the ith group of data includes: processor 301 generates a third compression indication message according to the ith group of dataThe third compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, the third compression indication information includes a group identifier of the ith group of data, and the third compression indication information is the indication information; the processor 301 processes k carrying payload in the N groups of data according to the third compression indication information₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0. Thus, the storage space occupied by the indication information in the memory 302 can be reduced, which is beneficial to improving the processing speed and efficiency.

The processor 301 sends the message to the wireless data decompression device via the communication interface 303. The wireless data compression apparatus shown in fig. 3(a) is the wireless data compression apparatus 212 in the network shown in fig. 2, and correspondingly, the wireless data decompression apparatus is the wireless data decompression apparatus 222 in the network shown in fig. 2. The wireless data compression device shown in fig. 3(a) is the wireless data compression device 224 in the network shown in fig. 2, and correspondingly, the wireless data decompression device is the wireless data decompression device 214 in the network shown in fig. 2. For example, the processor 301 may send the message to the wireless data decompression device through the packet network via the communication interface 303; the processor 301 may also send the message to a wireless data decompression device via the communication interface 303 and the optical fiber. The packet network may be a network capable of transmitting data and/or information in the form of messages.

In the wireless data compression apparatus provided in the embodiment of the present invention, the processor 301 may determine whether each group of data in the N groups of data carries a payload according to a threshold value, so as to determine group of data that does not carry a payload, such as the i-th group of data. The message obtained by the processor 301 includes the group data carrying the payload but not the group data not carrying the payload, and the processor 301 sends the message carrying the first frequency domain data to the wireless data decompression device, which helps to reduce the bandwidth requirement and the network construction cost.

Optionally, the processor 301 is further configured to obtain an identifier of a logical pipe corresponding to the first frequency domain data, where the identifier of the logical pipe is used to identify the logical pipe between the wireless data decompression apparatus and the wireless data compression apparatus. The logical pipe may be a logical link between the wireless data compression apparatus and the wireless data decompression apparatus, or a tunnel (english name) between the wireless data compression apparatus and the wireless data decompression apparatus. The identifier of the logical pipeline is an identifier of a Virtual Local Area Network (VLAN) to which the wireless data decompression device belongs, an MPLS (MPLS) Label which is a Multiprotocol Label Switching (MPLS) Label allocated to the wireless data decompression device, or a VNID (VNID) which is a Virtual extended local area network (VXLAN) to which the wireless data decompression device belongs. For example, the processor 301 may add the identification of the logical pipe to the header of the packet.

Optionally, the processor 301 may be further configured to receive first time domain data from the first antenna carrier data from the first device 20 or the second device 23. Processor 301 may also perform a DFT on the first time domain data to obtain the first frequency domain data.

In another embodiment provided by the present invention, the wireless data compression apparatus shown in fig. 3(a) can process at least two paths of frequency domain data, that is, the processor 301 in the wireless data compression apparatus shown in fig. 3(a) can perform the above-mentioned operation on the first frequency domain data according to the executable instructions included in the read program, and can also perform the following operations according to the executable instructions included in the read program from the memory 302.

The processor 301 obtains second frequency-domain data comprising M sets of data, M being an integer greater than or equal to 1. Wherein each of the M sets of data includes L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is largeAn integer equal to or greater than 1. L is₃The value of (d) may be 12, but may be other values, which are not illustrated here.

The processor 301 determines whether the jth data carries a payload according to a threshold value and jth data in the M groups of data, where the jth data is any one of the M groups of data. The method by which processor 301 determines whether the jth group of data carries a payload is the same as the method by which it determines whether the ith group of data carries a payload.

In a first manner, the determining, by the processor 301, whether the jth group of data carries a payload according to a threshold value and jth group of data in the M groups of data includes: processor 301 determines the L₃Whether or not the individual data includes L₄Data whose number is greater than the threshold value, L₄The data with the number value larger than the threshold value is L₄The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₄The value of the subcarrier corresponding to each data of each data is L₄Value of vector magnitude, L, of subcarrier corresponding to each data of the data₄Is greater than 0 and less than or equal to L₃Is an integer of (1). If processor 301 determines that L is not included in the jth data set₄If the number of the data is greater than the threshold value, the processor 301 determines that the jth data does not carry a payload. If processor 301 determines that L is included in the jth data set₄If the number of the data is greater than the threshold value, the processor 301 determines that the jth data carries a payload.

In a second mode, the determining, by the processor 301, whether the jth group of data carries a payload according to a threshold value and jth group of data in the M groups of data includes: processor 301 determines the L₃L corresponding to each data₃Whether the average value of the values of the subcarriers is greater than the preset threshold value, L₃The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers. If processor 301 determines that the jth data set includes L₃L corresponding to each data₃Average of values of subcarriersIf the mean value is less than or equal to the threshold value, the processor 301 determines that the jth data carries no payload. If processor 301 determines that the jth data set includes L₃L corresponding to each data₃If the average value of the values of the sub-carriers is greater than the threshold value, the processor 301 determines that the jth data carries the payload.

Accordingly, the processor 301 may obtain the message in the following three ways.

In a first manner, the obtaining, by the processor 301, a packet according to the ith group of data includes: the processor 301 generates first compression indication information according to the ith group of data, where the first compression indication information is used to indicate group data carrying a payload and group data not carrying a payload in the N group of data, the first compression indication information includes a group identifier of each group of data in the N group of data and indication information corresponding to the group identifier of each group of data in the N group of data, the indication information corresponding to the group identifier of each group of data in the N group of data is used to indicate whether a payload is carried, and the indication information corresponding to the group identifier of the ith group of data is used to indicate that the ith group of data does not carry a payload; the processor 301 generates second compression indication information according to the jth group of data, where the second compression indication information is used to indicate group data carrying a payload and group data not carrying a payload in the M group of data, the second compression indication information includes a group identifier of each group of data in the M group of data and indication information corresponding to the group identifier of each group of data in the M group of data, the indication information corresponding to the group identifier of each group of data in the M group of data is used to indicate whether a payload is carried, and the indication information corresponding to the group identifier of the jth group of data is used to indicate that the jth group of data does not carry a payload; the processor 301 performs processing on k carrying a payload in the N groups of data according to the first compression indication information and the second compression indication information₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, and the quantity of the frequency domain data is the quantity of the load included in the messageThe first payload carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

Optionally, in a first mode, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data; the second compressed indication information is an M-bit bitmap, a position of a jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and a value of the jth bit is indication information corresponding to the group identifier of the jth group of data.

In the second mode, the processor 301 obtaining the packet according to the ith group of data includes: the processor 301 generates third compression indication information according to the ith group of data, where the third compression indication information is used to indicate a group identifier carrying a payload in the N group of data, and the third compression indication information includes k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁Is an integer greater than or equal to 0; the processor 301 generates fourth compression indication information according to the jth group of data, where the fourth compression indication information is used to indicate a group identifier carrying a payload in the M group of data, and the fourth compression indication information includes k₂Group identification of each group of data in group data, k₂The group data is the group data carrying the payload in the M group data, k₂Is an integer greater than or equal to 0; the processor 301 compares the k with the third compression indication information and the fourth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the third compression indication information,The fourth compression indication information, the k₁Group data and k₂Group data.

In a third mode, the processor 301 obtaining the packet according to the ith group of data includes: the processor 301 generates fifth compression indication information according to the ith group of data, where the fifth compression indication information is used to indicate a group identifier that does not carry a payload in the N groups of data, and the fifth compression indication information includes the group identifier of the ith group of data; the processor 301 generates sixth compression indication information according to the jth group of data, where the sixth compression indication information is used to indicate a group identifier that does not carry a payload in the M group of data, and the sixth compression indication information includes the group identifier of the jth group of data; the processor 301 compares the k with the fifth compression indication information and the sixth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the fifth compression indication information, the sixth compression indication information and the k₁Group data and k₂Group data.

In another embodiment of the present invention, the wireless data compression apparatus transmits the packet to implement transmission of the first frequency domain data and the second frequency domain data, which is beneficial to improving data transmission efficiency.

Fig. 3(b) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention. The wireless data compression apparatus shown in fig. 3(b) includes: a first obtaining unit 305, a first determining unit 306, a second obtaining unit 307, and a transmitting unit 308. Optionally, the wireless data compression apparatus shown in fig. 3(b) further includes: a third obtaining unit 310 and a second determining unit 311.

The wireless data compression apparatus shown in fig. 3(b) and the wireless data compression apparatus shown in fig. 3(a) may be the same apparatus, such as the wireless data compression apparatus 212 or the wireless data compression apparatus 224 in the network shown in fig. 2. It can be considered that fig. 3(a) shows contents included in one wireless data compression apparatus from a physical point of view, and fig. 3(b) shows contents included in one wireless data compression apparatus from a logical point of view. The transmitting function of the transmitting unit 308 in fig. 3(b) may be performed by the processor 301 and the communication interface 303 in fig. 3(a) in cooperation, and the communication interface 303 may include at least one physical interface. The first obtaining unit 305, the first determining unit 306 and the second obtaining unit 307 in fig. 3(b) may be implemented by the processor 301 in fig. 3(a) according to executable instructions stored by the memory 302, and the processor 301 may include at least one physical processor. Alternatively, the third obtaining unit 310 and the second determining unit 311 in fig. 3(b) may be implemented by the processor 301 in fig. 3(a) according to executable instructions stored by the memory 302. The repeated content in fig. 3(b) and fig. 3(a) is not repeated in the embodiment corresponding to fig. 3 (b).

The first obtaining unit 305 is configured to obtain first frequency domain data, where the first frequency domain data includes N groups of data, and N is an integer greater than or equal to 1.

The first determining unit 306 is configured to determine whether an ith group of data in the N groups of data carries a payload according to a threshold value and the N groups of data, where the ith group of data is any one of the N groups of data. The first determining unit 306 may determine the threshold value according to the method in the embodiment corresponding to fig. 6, and details of the method for determining the threshold value are not repeated herein.

The first determining unit 306 is configured to determine that the ith group of data does not carry a payload.

The second obtaining unit 307 is configured to obtain a packet according to the ith group of data, where the packet is generated according to the first frequency domain data, and the packet does not carry the ith group of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload.

The sending unit 308 is configured to send the message to a wireless data decompression apparatus. The wireless data decompression device is the same as the wireless data decompression device mentioned in the embodiment corresponding to fig. 3(a), and is not described herein again.

For example, each of the N sets of data includes L₁A data of L₁Each data in the data corresponds to one subCarrier wave, L₁The first determining unit 306 is specifically configured to determine L for an integer greater than or equal to 1₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Value of vector magnitude, L, of subcarrier corresponding to each data of the data₂Less than or equal to L₁。

For example, each of the N sets of data includes L₁A data of L₁Each of the data corresponds to a subcarrier, L₁The first determining unit 306 is specifically configured to determine L for an integer greater than or equal to 1₁L corresponding to each data₁Whether the average value of the values of the subcarriers is greater than the threshold value, L₁The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

For example, the second obtaining unit 307 is specifically configured to generate, according to the ith group of data, first compression indication information, where the first compression indication information is used to indicate group data carrying a payload and group data not carrying a payload in the N group of data, the first compression indication information includes a group identifier of each group of data in the N group of data and indication information corresponding to the group identifier, where the indication information corresponding to the group identifier is used to indicate whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used to indicate that the ith group of data does not carry a payload, and the first compression indication information is the indication information; the second obtaining unit 307 is specifically configured to, according to the first compression indication information, perform processing on k carrying a payload in the N groups of data₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0. Wherein, theThe first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

For example, the second obtaining unit 307 is specifically configured to generate second compression indication information according to the ith group of data, where the second compression indication information is used to indicate a group identifier carrying a payload in the N groups of data, and the second compression indication information includes k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information; the second obtaining unit 307 is specifically configured to obtain the k according to the second compression indication information₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data.

For example, the second obtaining unit 307 is specifically configured to generate third compression indication information according to the ith group of data, where the third compression indication information is used to indicate a group identifier that does not carry a payload in the N groups of data, the third compression indication information includes the group identifier of the ith group of data, and the third compression indication information is the indication information; the second obtaining unit 307 is specifically configured to, according to the third compression indication information, perform processing on k carrying a payload in the N groups of data₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

For example, a header of the packet carries CPRI indication information, where the CPRI indication information is used to indicate that a load of the packet carries CPRI control information, and the load of the packet also carries the CPRI control information. If the wireless data compression apparatus is in communication with the first device 20, the CPRI control information is control word information in a CPRI frame sent by the first device 20. If the wireless data compression apparatus is in communication with the second device 23, the CPRI control information is control word information in a CPRI frame sent by the second device 23.

In the wireless data compression apparatus provided in the embodiment of the present invention, the first determining unit 306 determines whether each group of data in the N groups of data carries a payload according to a threshold value, so as to determine group of data that does not carry a payload, such as the i-th group of data. The packet obtained by the second obtaining unit 307 includes only group data carrying a payload. The sending unit 308 sends the message carrying the first frequency domain data to the wireless data decompression device in the form of a message, which is helpful for reducing the bandwidth requirement and the network construction cost.

Optionally, the wireless data compression apparatus shown in fig. 3(b) further includes a receiving unit. The receiving function of the receiving unit may be performed by the processor 301 and the communication interface 303 in fig. 3(a) in cooperation. The receiving unit is configured to receive first time domain data, where the first time domain data is first antenna carrier data obtained from the first device 20 or the second device 23; the first obtaining unit 305 is specifically configured to perform DFT on the first time domain data to obtain the first frequency domain data.

In another embodiment provided by the present invention, the wireless data compression apparatus shown in fig. 3(b) can process at least two paths of frequency domain data, that is, in addition to the operation on the first frequency domain data performed by the wireless data compression apparatus shown in fig. 3(b), the wireless data compression apparatus shown in fig. 3(b) can also obtain the second frequency domain data, carry the second frequency domain data in the message, and send the second frequency domain data to the corresponding wireless data decompression apparatus. The second frequency domain data includes M groups of data. Each set of data in the M sets of data comprises L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1.

Optionally, the wireless data compression apparatus may further include the third obtaining unit 310 and the second determining unit 311.

The third obtaining unit 310 is configured to obtain second frequency-domain data, where the second frequency-domain data includes M groups of data, and M is an integer greater than or equal to 1. The values of M and N may be the same, or the values of M and N may also be different, for example, M may be an integer multiple of N, and is not limited herein. The second determining unit 311 is configured to determine whether a jth group of data carries a payload according to a threshold value and the jth group of data in the M groups of data, where the jth group of data is any group of data in the M groups of data. The second determining unit 311 is further configured to determine that the jth data carries no payload.

For example, the second determining unit 311 is specifically configured to determine the L₃Whether or not the individual data includes L₄Data whose number is greater than the threshold value, L₄The data with the number value larger than the threshold value is L₄The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₄The value of the subcarrier corresponding to each data of each data is L₄Value of vector magnitude, L, of subcarrier corresponding to each data of the data₄Less than or equal to L₃. Alternatively, the second determining unit 311 is specifically configured to determine the L₃L corresponding to each data₃Whether the average value of the values of the subcarriers is greater than the preset threshold value, L₃The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

Correspondingly, the second obtaining unit 307 may obtain a packet according to the ith data and the jth data, where the packet does not carry the ith data and the jth data. The method for the second obtaining unit 307 to obtain the packet may refer to a method for the processor 301 to obtain the packet according to the i-th group of data and the j-th group of data shown in fig. 3 (a). The second obtaining unit 307 may also obtain the packet in any one of the following three manners.

In a first manner, the second obtaining unit 307 is specifically configured to generate first compression indication information according to the ith group of data, where the first compression indication information is used to indicate that the group of data carrying the payload in the N groups of data carries no payload, and the group of data does not carry the payloadThe first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether the data carries a payload, and the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload; the second obtaining unit 307 is specifically configured to generate second compression indication information according to the jth group of data, where the second compression indication information is used to indicate group data carrying a payload and group data not carrying a payload in the M group of data, the second compression indication information includes a group identifier of each group of data in the M group of data and indication information corresponding to the group identifier of each group of data in the M group of data, the indication information corresponding to the group identifier of each group of data in the M group of data is used to indicate whether a payload is carried, and the indication information corresponding to the group identifier of the jth group of data is used to indicate that the jth group of data does not carry a payload; the second obtaining unit 307 is specifically configured to perform k of the payload carried in the N groups of data according to the first compression indication information and the second compression indication information₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

Optionally, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data; the second compressed indication information is an M-bit bitmap, a position of a jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and a value of the jth bit is indication information corresponding to the group identifier of the jth group of data.

In a second manner, the second obtaining unit 307 is specifically configured to generate third compression indication information according to the ith group of data, where the third compression indication information is used to indicate a group identifier carrying a payload in the N groups of data, and the third compression indication information includes k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁Is an integer greater than or equal to 0; the second obtaining unit 307 is specifically configured to generate fourth compression indication information according to the jth group of data, where the fourth compression indication information is used to indicate a group identifier carrying a payload in the M group of data, and the fourth compression indication information includes k₂Group identification of each group of data in group data, k₂The group data is the group data carrying the payload in the M group data, k₂Is an integer greater than or equal to 0; the second obtaining unit 307 is specifically configured to perform, according to the third compression indication information and the fourth compression indication information, on the k₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the third compression indication information, the fourth compression indication information and the k₁Group data and k₂Group data.

In a third manner, the second obtaining unit 307 is specifically configured to obtain the packet according to the ith group of data, and includes: the processor 301 generates fifth compression indication information according to the ith group of data, where the fifth compression indication information is used to indicate a group identifier that does not carry a payload in the N groups of data, and the fifth compression indication information includes the group identifier of the ith group of data; the second obtaining unit 307 is specifically configured to generate sixth compression indication information according to the jth group of data, where the sixth compression indication information is used to indicate that the M group of data does not carry a payloadThe sixth compression indication information includes a group identifier of the jth group of data; the second obtaining unit 307 is specifically configured to obtain the k according to the fifth compression indication information and the sixth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the fifth compression indication information, the sixth compression indication information and the k₁Group data and k₂Group data.

Optionally, the wireless data compression apparatus shown in fig. 3(b) may further include a fourth obtaining unit (not shown in fig. 3 (b)). The fourth obtaining unit may be implemented by the processor 301 in fig. 3(a) according to executable instructions stored by the memory 302. The fourth obtaining unit is configured to obtain an identifier of a logical pipe corresponding to the first frequency domain data, where the identifier of the logical pipe is used to identify the logical pipe between the wireless data decompression apparatus and the wireless data compression apparatus. Wherein, the fourth obtaining unit may obtain the identifier of the logical pipe according to a physical port receiving a CPRI frame carrying the first time domain data. And a corresponding relation exists between the physical port for receiving the CPRI frame carrying the first time domain data and the identifier of the logic pipeline. Correspondingly, the second obtaining unit 307 is specifically configured to add the identifier of the logical pipe to the header of the packet. The specific content of the identifier of the logical pipe is the same as the specific content of the identifier of the logical pipe in fig. 3(a), and is not described herein again.

Fig. 3(c) is a schematic diagram of a wireless data compression device according to an embodiment of the present invention. The wireless data compression device shown in fig. 3(c) may be any one of the wireless data compression devices in the network shown in fig. 2. The wireless data compression apparatus shown in fig. 3(c) includes: a processor 312, a memory 313, a communication interface 314, a communication bus 315, and a determiner 316. The processor 312, memory 313, communication interface 314, and determiner 316 communicate via a communication bus 315. Processor 312 may be a CPU, NP, or other integrated circuit. The memory 313 may be used to store programs. Optionally, the memory 313 may also be used to store indication information, such as: one or more of the compression indication information mentioned in the embodiments of the present invention, such as the first compression indication information and/or the second compression indication information, are not illustrated one by one here.

The wireless data compression apparatus shown in fig. 3(c) is different from the wireless data compression apparatus shown in fig. 3(a) in that: the component for implementing the determination of whether the N groups of data carry payload in the wireless data compression apparatus shown in fig. 3(c) is a decision device 316, and the decision device 316 transmits the decision result to the processor 312 through a communication bus 315. The judgment result is used for indicating the group data carrying the effective load in the N groups of data and/or the group data not carrying the effective load in the N groups of data. The processor 312 may obtain a message according to the obtained first frequency domain data and the decision result. The message comprises indication information, and the indication information is used for indicating that the ith group of data in the N groups of data does not carry a payload. The way for the processor 312 to obtain the first frequency domain data and the packet is the same as that adopted by the processor 301 in fig. 3(a), and is not described herein again.

Optionally, after obtaining the decision result, the decision device 316 outputs the decision result to the processor 312, and at the same time or after outputting the decision result, also outputs to the processor 312 group data carrying a payload in the N group of data, such as k in the N group of data₁Group data.

The memory 313, the communication bus 315 and the communication interface 314 can be referred to the corresponding contents in fig. 3(a), and are not described in detail herein.

Fig. 4(a) is a schematic diagram of a wireless data decompression device according to an embodiment of the present invention. The wireless data decompression apparatus shown in fig. 4(a) may be any one of the wireless data decompression apparatuses in the network shown in fig. 2. The wireless data decompression apparatus shown in fig. 4(a) includes: a processor 401, a memory 402, a communication interface 403, and a communication bus 404. The processor 401, memory 402 and communication interface 403 communicate over a communication bus 404. The processor 401 may be a CPU, NP, or other integrated circuit. The memory 402 may be used to store programs.

The processor 401 performs the following operations according to the executable instructions included in the program read from the memory 402.

The processor 401 is configured to receive, through the communication interface 403, a packet sent by the wireless data compression apparatus, where the packet is a packet generated according to first frequency domain data, where the first frequency domain data includes N groups of data, where N is an integer greater than or equal to 1, the packet does not carry an ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload. Wherein the wireless data compression device may be the wireless data compression device shown in fig. 3(a) or fig. 3 (b).

The processor 401 decompresses the packet according to the indication information included in the packet, and obtains decompressed first frequency domain data, where the decompressed first frequency domain data includes the ith data. The processor 401 may obtain the decompressed first frequency domain data in any one of the following three manners.

In a first mode, the packet includes first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries the payload or not, the indication information corresponding to the group identifier of the ith group data is used for indicating that the ith group data does not carry the payload, and the k group data is compressed according to the compression indication information₁Is an integer greater than or equal to 0. Processor 401 obtains the k from the payload of the packet according to the first compression indication information included in the packet₁Group data; the processor 401 restores the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information; processor 401 identifies the k according to the ith group and the group ID of the ith group₁Group dataAnd the group identification of each group of data is used for recombining the N groups of data to obtain the decompressed first frequency domain data. The first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

In the second mode, the packet includes second compression indication information and k carrying the payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0. Processor 401 obtains the k from the payload of the packet according to the second compression indication information included in the packet₁Group data; processor 401 calculates k based on the value of N and the value of k₁Restoring the ith group of data by the group identification of each group of data in the group of data; processor 401 identifies the k according to the ith group and the group ID of the ith group₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

In a third mode, the payload of the packet carries third compression indication information and the N groups of data carry k of the payload₁Group data, the third compression indication information is used for indicating the group identifier which does not carry the payload in the N group data, the third compression indication information comprises the group identifier of the ith group data, and the k group data₁Is an integer greater than or equal to 0. The processor 401 restores the ith group of data according to the group identifier of the ith group of data included in the third compression indication information; processor 401 identifies the k according to the ith group and the group ID of the ith group₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

In the wireless data decompression device provided by the embodiment of the present invention, a message received by the wireless data decompression device carries first compression indication information, the message includes group data carrying a payload in the N group of data, and the N group of data has group data not carrying a payload, and the processor 401 can obtain decompressed first frequency domain data according to the first indication information carried by the received message and the group data carrying a payload in the first frequency domain data, which is helpful for reducing bandwidth requirements and network construction cost. The wireless data decompression device receives a packet carrying first compression indication information, the packet does not include any one group of data in the N groups of data, that is, there is no group of data carrying a payload in the N groups of data, and the processor 401 can obtain decompressed first frequency domain data according to the first indication information carried by the received packet, which is helpful for reducing bandwidth requirements and network construction cost. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

Optionally, the processor 401 further performs IDFT on the decompressed first frequency domain data to obtain first time domain data; processor 401 also transmits the first time domain data through communication interface 403. For example, after obtaining the first time domain data, the processor 401 may further obtain a CPRI frame according to the first time domain data, where the CPRI frame is obtained after performing CPRI encapsulation on the first time domain data; processor 401 also sends the CPRI frame through communication interface 403. If the wireless data decompression apparatus shown in fig. 4(a) is the wireless data decompression apparatus 214 in the network shown in fig. 2, the processor 401 further sends the CPRI frame to the first device 20 through the communication interface 403. If the wireless data decompression apparatus shown in fig. 4(a) is the wireless data decompression apparatus 222 in the network shown in fig. 2, the processor 401 further sends the CPRI frame to the second device 23 through the communication interface 403.

In another embodiment provided by the present invention, the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry a jth group of data, the jth group of data does not carry a payload, the jth group of data is one of the M groups of data, M is an integer greater than or equal to 1, and the indication information is further used to indicate that the jth group of data does not carry a payload. The processor 401 may decompress the packet according to the indication information included in the packet to obtain decompressed second frequency domain data on the basis of decompressing the packet to obtain decompressed first frequency domain data, where the decompressed second frequency domain data includes the jth data.

For example, the processor 401 may obtain the decompressed second frequency domain data from the message in any one of the following three manners.

In a first manner, the packet includes a first payload, a second payload, and the number of frequency domain data, where the number of frequency domain data is the number of payloads included in the packet, and the first payload includes first compression indication information and k of payloads carried in the N groups of data₁The first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group data in the N groups of data and indication information corresponding to the group identifier of each group data in the N groups of data, the indication information corresponding to the group identifier of each group data in the N groups of data is used for indicating whether the group data carries the payload, the indication information corresponding to the group identifier of the ith group data is used for indicating that the ith group data does not carry the payload, and the second load comprises second compression indication information and k groups of data carrying the payload in the M groups of data₂The second compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the M group of data, the second compression indication information comprises a group identifier of each group data in the M group of data and indication information corresponding to the group identifier of each group data in the M group of data, the indication information corresponding to the group identifier of each group data in the M group of data is used for indicating whether the group data carries the payload or not, and the indication information corresponding to the group identifier of each group data in the M group of data is used for indicating whether the group data carries the payload or notIndicating information corresponding to a group identifier of a jth group of data is used for indicating that the jth group of data does not carry a payload, the second frequency domain data comprises the M group of data, M is an integer greater than or equal to 1, the indicating information comprises the second compression indicating information and the first compression indicating information, and k is₁And k is said₂Are each an integer greater than or equal to 0. The obtaining of the decompressed second frequency domain data by the processor 401 includes: processor 401 obtains the k from the second payload of the packet according to the second compression indication information included in the packet₂Group data; the processor 401 restores the jth data according to the indication information corresponding to the group identifier of the jth data; processor 401 identifies the group according to the jth data and the k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

Optionally, in a first mode, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data; the second compressed indication information is an M-bit bitmap, a position of a jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and a value of the jth bit is indication information corresponding to the group identifier of the jth group of data. The method for obtaining the decompressed first frequency domain data by the processor 401 is the same as the method for obtaining the decompressed first frequency domain data by the processor 401 in fig. 4(a), and is not described herein again.

In a second mode, the header of the packet includes the first payload, the second payload, and the number of frequency domain data, where the number of frequency domain data is the number of payloads included in the packet. The first load comprises third compression indication information and k carrying payloads in the N groups of data₁Group data. The third compression indication information is used for indicating a group identifier carrying a payload in the N groups of data. The third compression indication information comprises k₁Group identification for each group of data in group data. The second load comprises fourth compression indication information and k carrying the payload in the M groups of data₂Group data. The fourth compression indication information is used for indicating a group identifier carrying a payload in the M groups of data. The fourth compression indication information comprises k₂A group identification for each group of data in the group data. K is₁And k is said₂Are each an integer greater than or equal to 0. The indication information includes the third compression indication information and the fourth compression indication information. The obtaining of the decompressed second frequency domain data by the processor 401 includes: processor 401 obtains the k from the second payload of the packet according to the fourth compression indication information included in the packet₂Group data; the processor 401 according to the k₂Restoring the jth data set by the group identification of each group of data in the group data and the numerical value of M; processor 401 identifies the group according to the jth data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data. The method for obtaining the decompressed first frequency domain data by the processor 401 is the same as the method for obtaining the decompressed first frequency domain data by the processor 401 in fig. 4(a), and is not described herein again.

In a third mode, the header of the packet includes the first payload, the second payload, and the number of the frequency domain data, where the number of the frequency domain data is the number of the payload included in the packet. The first load comprises fifth compression indication information and k carrying payloads in the N groups of data₁Group data. The fifth compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, and the fifth compression indication information includes a group identifier of the i group of data. The second load comprises sixth compression indication information and k carrying the payload in the M groups of data₂Group data. The sixth compression indication information is used to indicate that the group identifier of the M groups of data does not carry a payload, and the sixth compression indication information includes the group identifier of the jth group of data. K is₁And k is said₂Are each an integer greater than or equal to 0. The indication information comprises the fifth compression indication information and theThe sixth compression instruction information. The obtaining of the decompressed second frequency domain data by the processor 401 includes: the processor 401 obtains the k from the second load of the packet according to the group identifier of the jth group of data in the sixth compression indication information included in the packet₂Group data; the processor 401 restores the jth data according to the group identifier of the jth data and the value of M; processor 401 identifies the group according to the jth data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data. The method for obtaining the decompressed first frequency domain data by the processor 401 is the same as the method for obtaining the decompressed first frequency domain data by the processor 401 in fig. 4(a), and is not described herein again.

Fig. 4(b) is a schematic diagram of a wireless data decompression device according to an embodiment of the present invention. The wireless data decompression apparatus shown in fig. 4(b) includes: a receiving unit 405 and a decompression unit 406. Optionally, the wireless data decompression apparatus shown in fig. 4(b) further includes: an obtaining unit 407 and a sending unit 408.

The wireless data decompression device shown in fig. 4(b) and the wireless data decompression device shown in fig. 4(a) may be the same device, such as the wireless data decompression device 214 or the wireless data decompression device 222 in the network shown in fig. 2. It can be considered that fig. 4(a) shows the contents included in a wireless data decompression apparatus from a physical point of view, and fig. 4(b) shows the contents included in a wireless data decompression apparatus from a logical point of view. The receiving function of the receiving unit 405 in fig. 4(b) may be performed by the processor 401 and the communication interface 403 in fig. 4(a) in cooperation, and the communication interface 403 may include at least one physical interface. The decompression unit 406 in fig. 4(b) may be implemented by the processor 401 in fig. 4(a) according to executable instructions stored by the memory 402, and the processor 401 may include at least one physical processor. Alternatively, the obtaining unit 407 in fig. 4(b) may be implemented by the processor 401 in fig. 4(a) according to executable instructions stored by the memory 402. The transmission function of the transmission unit 408 in fig. 4(b) may be performed by the processor 401 and the communication interface 403 in fig. 4(a) in cooperation. The repeated content in fig. 4(b) and fig. 4(a) is not repeated in the embodiment corresponding to fig. 4 (b).

The receiving unit 405 is configured to receive a packet sent by a wireless data compression device, where the packet is generated according to first frequency domain data, where the first frequency domain data includes N groups of data, where N is an integer greater than or equal to 1, the packet does not carry an ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload.

The decompressing unit 406 is configured to decompress the packet according to the indication information included in the packet, so as to obtain decompressed first frequency domain data, where the decompressed first frequency domain data includes the ith set of data.

For example, the packet includes first compression indication information and k carrying payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the k group of data does not carry a payload₁Is an integer greater than or equal to 0. The decompressing unit 406 is specifically configured to obtain the k from the payload of the packet according to the first compression indication information included in the packet₁Group data; the decompressing unit 406 is specifically configured to restore the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information; the decompression unit 406 is specifically configured to perform decompression according to the group identifier of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

Optionally, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data.

For example, the packet includes second compression indication information and k carrying a payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0. The decompressing unit 406 is specifically configured to obtain the k from the payload of the packet according to the second compression indication information included in the packet₁Group data; the decompression unit 406 is specifically configured to decompress the data according to the value of N and the k₁Restoring the ith group of data by the group identification of each group of data in the group of data; the decompression unit 406 is specifically configured to perform decompression according to the group identifier of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

For example, the packet includes third compression indication information and k carrying a payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is an integer greater than or equal to 0. The decompression unit 406 is specifically configured to restore the ith group of data according to the group identifier of the ith group of data included in the third compression indication information; the decompression unit 406 is specifically configured to perform decompression according to the group identifier of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

The first frequency domain data after decompression in the embodiment of the present invention may be the same data as the first frequency domain data, or may be different data from the first frequency domain data. The second frequency domain data after decompression in the embodiment of the present invention may be the same data as the second frequency domain data, or may be different data from the second frequency domain data.

In the wireless data decompression device provided by the embodiment of the present invention, a message received by the wireless data decompression device carries first compression indication information, the message includes group data carrying a payload in the N group of data, the N group of data has group data not carrying a payload, and the decompression unit 406 can obtain decompressed first frequency domain data according to the first indication information carried by the received message and the group data carrying a payload in the first frequency domain data, which is helpful for reducing bandwidth requirements and network construction cost. The wireless data decompression device receives a packet carrying first compression indication information, the packet does not include any one group of data in the N groups of data, that is, there is no group of data carrying a payload in the N groups of data, and the decompression unit 406 can obtain decompressed first frequency domain data according to the first indication information carried by the received packet, which is helpful for reducing bandwidth requirements and network construction cost. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

Optionally, the wireless data decompression apparatus shown in fig. 4(b) further includes: an obtaining unit 407 and a sending unit 408. The obtaining unit 407 is configured to perform IDFT on the first frequency domain data to obtain first time domain data. The sending unit 408 may be configured to send the first time domain data to the first device 20 or the second device 23. For example, the obtaining unit 407 is further configured to obtain a CPRI frame according to the first time domain data, where the CPRI frame is obtained after CPRI encapsulation is performed on the first time domain data. The sending unit 408 is further configured to send the CPRI frame to the first device 20 or the second device 23.

In another embodiment provided by the present invention, the packet carries multiple paths of frequency domain data, such as the first frequency domain data and the second frequency domain data, and the wireless data decompression device shown in fig. 4(b) can decompress the packet to obtain the decompressed first frequency domain data and the decompressed second frequency domain data. The way of obtaining the decompressed first frequency domain data by the wireless data decompression device shown in fig. 4(b) is the same as that in the above embodiment, and is not described herein again.

Optionally, the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry j group of data, the j group of data does not carry a payload, the j group of data is one of the M groups of data, M is an integer greater than or equal to 1, the indication information is further configured to indicate that the j group of data does not carry a payload, and the decompression unit 406 is further configured to: decompressing the packet according to the indication information included in the packet, to obtain decompressed second frequency domain data, where the decompressed second frequency domain data includes the jth data.

For example, the packet includes a first payload, a second payload, and the number of frequency domain data, where the number of frequency domain data is the number of payloads included in the packet, and the first payload includes first compression indication information and k of payloads carried in the N groups of data₁The first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group data in the N groups of data and indication information corresponding to the group identifier of each group data in the N groups of data, the indication information corresponding to the group identifier of each group data in the N groups of data is used for indicating whether the group data carries the payload, the indication information corresponding to the group identifier of the ith group data is used for indicating that the ith group data does not carry the payload, and the second load comprises second compression indication information and k groups of data carrying the payload in the M groups of data₂Group data, the second compression indication information is used for indicating the group data carrying the effective load and not carrying the effective load in the M group dataThe second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried, the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry a payload, the second frequency domain data comprises the M groups of data, M is an integer greater than or equal to 1, the indication information comprises the second compression indication information and the first compression indication information, and the k is an integer greater than or equal to the first compression indication information₁And k is said₂Are each an integer greater than or equal to 0. The indication information includes the first compression indication information and the second compression indication information. The decompressing unit 406 is specifically configured to obtain the k from the second payload of the packet according to the second compression indication information included in the packet₂Group data; the decompression unit 406 is specifically configured to restore the jth data according to the indication information corresponding to the group identifier of the jth data; the decompression unit 406 is specifically configured to perform decompression according to the group identifier of the jth data and the k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

Optionally, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data; the second compression indication information is an M-bit bitmap, the position of the jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and the value of the jth bit is indication information corresponding to the group identifier of the jth group of data.

For the case that the packet includes the third compression indication information and the fourth compression indication information, the wireless data decompression apparatus shown in fig. 4(b) may obtain the decompressed second frequency domain data by using the method shown in fig. 4(a), which is not described herein again. For the case that the packet includes the fifth compression indication information and the sixth compression indication information, the wireless data decompression device shown in fig. 4(b) may obtain the decompressed second frequency domain data by using the method shown in fig. 4(a), which is not described herein again.

Fig. 5 is a flowchart of a wireless data transmission method according to an embodiment of the present invention. The following describes the wireless data transmission method according to a first embodiment in detail with reference to the network structure shown in fig. 2. The wireless data transmission method provided in the first embodiment is described by taking a single antenna carrier data as an example. The wireless data transmission method provided in the first embodiment may further process and transmit at least two antenna carrier data paths, that is, process and transmit first time domain data and second time domain data, where the first time domain data corresponds to one antenna carrier data path, and the second time domain data corresponds to the other antenna carrier data path. The method of processing and transmitting at least two antenna carrier data will not be illustrated.

501, the first device 20 sends a CPRI frame to the convergence side compression device 21, where the CPRI frame carries the first time domain data.

Taking a path of antenna carrier data with a carrier frequency of 20Mhz as an example, the path of antenna carrier data includes 1200 subcarriers, and the frequency of each subcarrier is 15000hz, that is, the period is 66.7 microseconds. The CPRI frame sent by the first device 20 to the convergence side compression device 21 may carry the first time domain data, where the time domain data corresponds to the antenna carrier data. The first time domain data may be time domain in-phase and quadrature component (IQ) data.

502, the first CPRI210 sends the first time domain data to the first DFT module 211.

For example, the first CPRI210 removes the encapsulation of the CPRI frame, and obtains the first time domain data. The first CPRI210 transmits the first time domain data to the first DFT module 211.

503, the first DFT module 211 performs DFT on the first time domain data to obtain first frequency domain data.

For example, the first DFT module 211 performs DFT on the received first time domain data to obtain the first frequency domain data including N groups of data. The first DFT module 211 may perform DFT on the first time domain data according to formula (1) to obtain frequency domain data x (a) corresponding to x (b), where x (a) is any one of frequency domain data included in the first frequency domain data. The first frequency domain data includes N sets of data, N being an integer greater than or equal to 1. The detailed description of the DFT process is omitted here.

In the formula (1), a is an integer greater than or equal to 0 and less than or equal to (L-1). The value of b is an integer of 0 or more and (L-1) or less. The value of L is the number of sample points. Taking a path of antenna carrier data with 20Mhz carrier frequency as an example, the value of L is 2048, the value of N is 100, and each group of data of N groups of data includes 12 frequency domain data.

The first DFT module 211 transmits 504 the first frequency domain data to the wireless data compression device 212.

505, the wireless data compression device 212 obtains the message according to the first frequency domain data.

The method for the wireless data compression device 212 to obtain the packet according to the first frequency domain data may refer to the method provided in the embodiment corresponding to fig. 6, and is not described herein again.

The wireless data compression device 212 sends 506 the message to the access-side compression device 22 over the packet network.

For example, the wireless data compression device 212 may send the message via the first interface 213, and the message is sent to the access-side compression device 22 via a forwarding device in the packet network. The wireless data compression device 212 may also send the message to the access-side compression apparatus 22 through other networks or links, which are not illustrated in any detail herein.

507, the wireless data decompression device 222 decompresses the packet from the second interface 223 to obtain decompressed first frequency domain data.

The method for the wireless data compression device 222 to obtain the decompressed first frequency domain data according to the packet may refer to the method provided in the embodiment corresponding to fig. 7, and is not described herein again.

The wireless data decompression device 22 sends 508 the decompressed first frequency domain data to the first IDFT module 221.

509, the first IDFT module 221 performs IDFT on the decompressed first frequency domain data to obtain the first time domain data.

For example, the first IDFT module 221 performs IDFT on the received decompressed first frequency-domain data to obtain the first time-domain data. The first IDFT module 221 may perform IDFT on the first frequency domain data according to formula (2) to obtain time domain data x (b) corresponding to x (a). The detailed flow of IDFT will not be described herein.

In the formula (1), a is an integer greater than or equal to 0 and less than or equal to (L-1). The value of b is an integer of 0 or more and (L-1) or less. The value of L is the number of sample points. Taking a path of antenna carrier data with 20Mhz carrier frequency as an example, the value of L is 2048.

510, the first IDFT module 221 sends the first time domain data to the second CPRI 220.

511, the second CPRI220 sends the CPRI frame to the second device 23, where the CPRI frame carries the first time domain data.

For example, the second CPRI220 performs CPRI encapsulation on the first time domain data to obtain the CPRI frame. The second CPRI220 transmits the CPRI frame to the second device 23.

The method for the second device 23 to send data to the first device 20 in the network shown in fig. 2 can refer to the methods 501 to 511, which are not described herein again.

In the wireless data transmission method provided in the first embodiment of the present invention, the wireless data compression device may encapsulate the group data carrying the payload in the first frequency domain data, so as to obtain the packet. And the wireless data compression device sends the message to a wireless data decompression device. The wireless data decompression device can decompress the message, that is, the group data not carrying the payload is restored, and the first frequency domain data is obtained. The wireless data compression device and the wireless data decompression device realize the transmission of the first frequency domain data by sending a message in a mode that the message comprises group data carrying a payload, and the message does not comprise the group data not carrying the payload, thereby being beneficial to reducing the bandwidth requirement and the network construction cost.

Fig. 6 is a flowchart of a wireless data transmission method according to an embodiment of the present invention. Fig. 6 is a diagram illustrating a wireless data transmission method according to an embodiment of the present invention from the perspective of a wireless data compression apparatus. The wireless data compression device may be the wireless data compression device 212 or the wireless data compression device 224 of fig. 2. The wireless data compression device may also be the wireless data compression device shown in fig. 3(a), 3(b) or 3 (c). The following describes a wireless data transmission method according to an embodiment of the present invention in detail.

A wireless data compression device obtains first frequency domain data comprising N sets of data, N being an integer greater than or equal to 1, 601.

For example, the value of N may be the same as that in the embodiment corresponding to fig. 5, and is not described herein again. The first frequency domain data is frequency domain data obtained by performing DFT on the first time domain data. The first time domain data is first antenna carrier data obtained from the first device 20 or the second device 23, or the first frequency domain data is frequency domain data obtained by performing baseband processing on radio data from an Evolved Packet Core (EPC).

And 602, the wireless data compression device determines whether the ith group of data carries a payload according to a threshold value and the ith group of data in the N groups of data, wherein the ith group of data is any group of data in the N groups of data.

By way of example, the N sets of numbersAccording to each set of data comprising L₁A data of L₁Each data in the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1. The wireless data compression device determines whether the ith group of data in the N groups of data carries a payload according to a threshold value and the N groups of data, wherein the step of determining whether the ith group of data carries the payload comprises the following steps: the wireless data compression device determines the L₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Value of vector magnitude, L, of subcarrier corresponding to each data of the data₂Less than or equal to L₁. Or, the determining, by the wireless data compression device according to a threshold value and the N groups of data, whether an i-th group of data in the N groups of data carries a payload includes: the wireless data compression device determines the L₁L corresponding to each data₁Whether the average value of the values of the subcarriers is greater than the threshold value, L₁The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

For example, if the first antenna carrier data obtained from the first device 20 or the second device 23 is not transmitted over the air interface, or the wireless data from the EPC is not transmitted over the air interface, the threshold value in 602 may be set to 0. If the threshold value is 0, L₁Taking the ith group of data in the N groups of data as an example, the ith group of data includes 12 data, as shown in formula (3).

R_i＝[R_i1,R_i2,...,R_i12](3)

Any one data R in 12 data included in the ith group of data_icThe expression as formula (4) can be performed in a complex form.

R_ic＝I_ic+jQ_icc＝1,2,...,12 (4)

I in formula (4)_icTo representR_icIn-phase component of (I) (English name in-phase data), Q_icRepresents R_icThe orthogonal component (english name is the feature data). I is_icAnd Q_icAre all real numbers. Wherein the value of c is an integer greater than or equal to 1 and less than or equal to 12.

Data R_icIs R_icThe vector magnitude of (2). R_icCan be expressed as MR_ic。MR_icThe calculation formula of (c) can be expressed as formula (5).

If said L is₁The reference value corresponding to each datum is L₁L in the data₂And comparing the value of each data in the ith group of data with the threshold value by the wireless data compression device according to the value of the subcarrier corresponding to each data in the ith group of data. With L₂Is 1, the threshold value is 0 for example, if 12 data in the ith group of data includes at least 1 data MR_icIs greater than 0, the ith data carries a payload. MR of 12 data in the ith group of data_icIf the values of the data are all 0, the ith group of data does not carry the payload. With L₂Is 3, the threshold value is 0 for example, if the 12 data in the ith group of data include at least 3 MR data_icIs greater than 0, the ith data carries a payload. MR if only 1 data is included in the ith group of data_icMR with a value of greater than 0 or comprising only 2 data_icIf the value of (b) is greater than 0, the ith group of data does not carry a payload. L is₂Other numerical examples are not specifically listed here.

If said L is₁The reference value corresponding to each datum is L₁L corresponding to each data₁And the average value of the numerical values of the sub-carriers is compared with the threshold value by the wireless data compression device through the average value obtained through calculation. Take the threshold value as 0 for example, if the ith group numberMR of each of the 12 data_icAnd if the average value is 0, the wireless data compression device obtains an average value of 0, and then the wireless data compression device determines that the ith group of data does not carry a payload. MR if 12 data in the ith group of data comprise at least one data_icIf the average value of the data carried by the ith group of data is greater than 0, the average value obtained by the wireless data compression device is greater than 0, and then the wireless data compression device determines that the ith group of data carries the payload.

In the embodiment provided by the present invention, the wireless data compression device determines that the i-th group of data does not carry a payload according to the method.

In addition, the threshold value in the embodiment of the present invention may also be dynamically obtained. Such as: before the wireless data compression device determines the relation between the ith group of data in the N groups of data and a threshold value, the wireless data compression device can obtain group data corresponding to D periods before the period of the ith group of data. The threshold value may be determined according to group data corresponding to D cycles before the cycle of the ith group data. Each group of data in the N groups of data in the embodiment of the present invention corresponds to one cycle.

The threshold may be a threshold set for each data, and taking the f-th data in the m-th group of data as an example, in the period t, the threshold corresponding to the f-th data in the m-th group of data may be represented as V_mf(t) of (d). Wherein m represents the mth group of data, f represents the fth data in the mth group of data, and t represents the period corresponding to the mth group of data. V_mf(t) can be calculated by equation (6).

In formula (6), MR_mfThe vector amplitude of the subcarrier corresponding to the f data of the m group of data. V_mfThe value of (T) is the average value of the coefficient lambda and the vector amplitude of the subcarrier corresponding to the f-th data in the m-th group of data corresponding to D periods T before the period T. The value of D is an integer greater than or equal to 1. Book (I)The N groups of data mentioned in the embodiment of the present invention may be frequency domain data of the same period.

The threshold value may also be a threshold value set for each set of data. Taking the mth group of data as an example, in the period t, the threshold corresponding to the mth group of data may be expressed as vm (t). Vm (t) can be calculated by equation (7).

In formula (7), vm (t) is an average value of threshold values corresponding to 12 data included in the mth group of data calculated according to formula (6).

The threshold value may also be a threshold value set for the N groups of data. Taking the N sets of data as an example, in the period t, the threshold corresponding to the N sets of data may be denoted as vth (t). Vth (t) can be calculated by equation (8).

Vth(t)＝Min(Vm(t)) (8)

In formula (8), vm (t) is an average value of threshold values corresponding to 12 data included in the mth group of data calculated according to formula (7). Vth (t) is a minimum value of threshold values corresponding to all the group data included in the N group data.

The method for dynamically determining a threshold value provided in the embodiment of the present invention may specifically be that the wireless data compression apparatus dynamically obtains the threshold value according to the method, or another device capable of communicating with the wireless data compression apparatus, such as a controller, dynamically obtains the threshold value according to the method, and the other device capable of dynamically obtaining the threshold value sends the obtained threshold value to the wireless data compression apparatus, so that the wireless data compression apparatus obtains the threshold value.

603, the wireless data compression device determining that the ith set of data does not carry a payload.

In 603, the wireless data compression apparatus may specifically adopt the method in 602, and determine that the i-th group of data does not carry a payload, which is not described herein again.

604, the wireless data compression device obtains a packet according to the ith group of data, where the packet is generated according to the first frequency domain data, the packet does not carry the ith group of data, and the packet includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload.

The wireless data compression device has the following three ways of obtaining the message according to the ith group of data.

In a first mode, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries the payload or not, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload, and the first compression indication information is the indication information; the wireless data compression device carries the k of the effective load in the N groups of data according to the first compression indication information₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0. The first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

Taking N as 100 as an example, the bitmap with N bits can be as shown in fig. 7 (a). The value 0 in fig. 7(a) is used to indicate that no payload is carried, and the value 1 in fig. 7(a) is used to indicate that a payload is carried. The position of each value in the illustrated N-bit bitmap in fig. 7(a) represents the group identification of the group of data. Such as: the intersection position of the 1 st row and the 1 st column of the N-bit bitmap shown in fig. 7(a) represents the 1 st group of data, and the indication information corresponding to the 1 st group of data is information represented by a value 0, that is, the 1 st group of data does not carry a payload. The intersection position of the 1 st row and the 2 nd column of the N-bit bitmap shown in fig. 7(a) represents the 2 nd group of data, and the indication information corresponding to the 2 nd group of data is the information represented by the value 1, that is, the 2 nd group of data carries the payload. The value at the position corresponding to the ith group of data in the N-bit bitmap shown in fig. 7(a) is 0, that is, the ith group of data does not carry a payload.

In a second mode, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression device generates second compression indication information according to the ith group of data, wherein the second compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the second compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information; the wireless data compression device compresses the k according to the second compression indication information₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data. Wherein the second compression indication information may take the form in fig. 7 (b). Fig. 7(b) 5 is used to indicate that the 5 th group of data in the N groups of data carries a payload. Similarly, as can be seen from the second compression indication information in fig. 7(b), the 5 th group data, the 8 th group data, the 22 nd group data …, the 80 th group data and the 93 th group data in the N group data are group data carrying a payload.

In a third mode, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression device generates third compression indication information according to the ith group of data, wherein the third compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, and the third compression indication information comprises the group identifier of the ith group of dataThe third compression indication information is the indication information; the wireless data compression device carries the k of the effective load in the N groups of data according to the third compression indication information₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0. The third compression indication information may also adopt the form shown in fig. 7(b), and is different from the second compression indication information in that the group identifier in the third compression indication information is an identifier of group data that does not carry a payload, and will not be described herein with reference to the accompanying drawings.

Optionally, a header of the packet carries CPRI indication information, where the CPRI indication information is used to indicate that a load of the packet carries CPRI control information, and the load of the packet also carries the CPRI control information, where the CPRI control information is control word information in a CPRI frame.

The format of the message provided by the embodiment of the present invention may adopt the format shown in fig. 7 (c). The indication information in fig. 7(c) may be the first compression indication information shown in fig. 7(a), the second compression indication information shown in fig. 7(b), or the third compression indication information. The payload-carrying group data in fig. 7(c) may be k in the N group data₁The payload carried by the group data, i.e. the group data carrying the payload in fig. 7(c), may be k₁The payload carried by the group data.

605, the wireless data compression apparatus sends the message to a wireless data decompression apparatus.

For example, the wireless data compression device may send the message to the wireless data decompression device over a packet network. The packet network may be a network such as an ethernet network capable of transmitting data and/or information by message. The message may be an ethernet message, an Internet Protocol (IP) message, or an MPLS message, and a message format that may be used is not illustrated here.

Optionally, the method further comprises: the wireless data compression device obtains an identifier of a logic pipeline corresponding to the first frequency domain data, wherein the identifier of the logic pipeline is used for identifying the logic pipeline between the wireless data decompression device and the wireless data compression device; the wireless data compression device obtains the message according to the ith group of data, and the method further comprises the following steps: and the wireless data compression device adds the identifier of the logic pipeline to the message header of the message. The identifier of the logical pipe is an identifier of a VLAN to which the wireless data decompression device belongs, an MPLS label assigned to the wireless data decompression device, or a VNID of a VXLAN to which the wireless data decompression device belongs.

In the wireless data compression device provided in the embodiment of the present invention, the wireless data compression device determines whether each group of data in the N groups of data carries a payload according to a threshold value, so as to determine group of data that does not carry a payload, such as the i-th group of data. The message obtained by the wireless data compression device comprises the group data carrying the effective load but not the group data not carrying the effective load, and the wireless data compression device sends the message carrying the first frequency domain data to the wireless data decompression device in the form of the message, which is beneficial to reducing the bandwidth requirement and the network construction cost.

Based on the corresponding embodiment of fig. 6, a method provided by another embodiment of the present invention further includes: the wireless data compression device obtains second frequency domain data, wherein the second frequency domain data comprises M groups of data, and M is an integer greater than or equal to 1; the wireless data compression device determines whether the jth data carries a payload or not according to a threshold value and jth data in the M groups of data, wherein the jth data is any one group of data in the M groups of data; the wireless data compression device determines that the jth data set does not carry a payload.

For example, each of the M sets of data includes L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1. The wireless data compression device determines the jth group number according to a threshold value and jth group data in the M group dataDepending on whether or not the payload is carried, including: the wireless data compression device determines the L₃Whether or not the individual data includes L₄Data whose number is greater than the threshold value, L₄The data with the number value larger than the threshold value is L₄The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₄The value of the subcarrier corresponding to each data of each data is L₄Value of vector magnitude, L, of subcarrier corresponding to each data of the data₄Less than or equal to L₃. Or, the determining, by the wireless data compression device according to a threshold value and a jth group of data in the M group of data, whether the jth group of data carries a payload includes: the wireless data compression device determines the L₃L corresponding to each data₃Whether the average value of the values of the subcarriers is greater than the preset threshold value, L₃The value of any one of the subcarriers is the value of the vector magnitude of the any one of the subcarriers.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information is used for indicating the group of data carrying a payload and the group of data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether the group of data carries the payload, and the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload; the wireless data compression device generates second compression indication information according to the jth group of data, wherein the second compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the M group of data, the second compression indication information comprises a group identifier of each group of data in the M group of data and indication information corresponding to the group identifier of each group of data in the M group of data, and the second compression indication information comprises indication information corresponding to the group identifier of each group of data in the M group of dataIndicating information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether the group identifier carries a payload, and indicating information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry a payload; the wireless data compression device carries k of the effective load in the N groups of data according to the first compression indication information and the second compression indication information₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

Optionally, the first compression indication information is an N-bit bitmap, a position of an ith bit of the N-bit bitmap in the N-bit bitmap is a group identifier of the ith group of data, and a value of the ith bit is indication information corresponding to the group identifier of the ith group of data; the second compressed indication information is an M-bit bitmap, a position of a jth bit of the M-bit bitmap in the M-bit bitmap is a group identifier of the jth group of data, and a value of the jth bit is indication information corresponding to the group identifier of the jth group of data. The message provided by the embodiment of the present invention may adopt the structure shown in fig. 7 (d). The first compression indication information in fig. 7(d) is an N-bit bitmap mentioned in the embodiment of the present invention, and the first compression indication information may take the form of fig. 7(a) or fig. 7 (b). The second compression indication information in fig. 7(d) is a bitmap with M bits mentioned in the embodiment of the present invention, and the second compression indication information may take the form of fig. 7(a) or fig. 7 (b).

In a second mode, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression deviceGenerating third compression indication information according to the ith group of data, wherein the third compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the third compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁Is an integer greater than or equal to 0; the wireless data compression device generates fourth compression indication information according to the jth group of data, wherein the fourth compression indication information is used for indicating a group identifier carrying a payload in the M groups of data, and the fourth compression indication information comprises k₂Group identification of each group of data in group data, k₂The group data is the group data carrying the payload in the M group data, k₂Is an integer greater than or equal to 0; the wireless data compression device compresses the k according to the third compression indication information and the fourth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the third compression indication information, the fourth compression indication information and the k₁Group data and k₂Group data.

In a third mode, the obtaining, by the wireless data compression device, a packet according to the ith group of data includes: the wireless data compression device generates fifth compression indication information according to the ith group of data, wherein the fifth compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, and the fifth compression indication information comprises the group identifier of the ith group of data; the wireless data compression device generates sixth compression indication information according to the jth group of data, wherein the sixth compression indication information is used for indicating a group identifier which does not carry a payload in the M group of data, and the sixth compression indication information comprises the group identifier of the jth group of data; the wireless data compression device compresses the k according to the fifth compression indication information and the sixth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the fifth compression indication information and the packet dataSixth compression indication information, k₁Group data and k₂Group data.

In the method provided by another embodiment of the present invention, the wireless data compression device may send the data group carrying the payload and not the group data not carrying the payload in the at least two paths of frequency domain data to the wireless data decompression device through the packet, which is helpful to improve the transmission efficiency of the wireless data and further save the bandwidth.

Fig. 8 is a flowchart of a wireless data transmission method according to an embodiment of the present invention. Fig. 8 is a diagram illustrating a wireless data transmission method according to an embodiment of the present invention from the perspective of a wireless data decompression apparatus. The wireless data decompression device may be the wireless data decompression device 214 or the wireless data decompression device 222 in fig. 2. The wireless data compression apparatus may also be the wireless data decompression apparatus shown in fig. 4(a) or fig. 4 (b). The following describes a wireless data transmission method according to an embodiment of the present invention in detail.

801, a wireless data decompression device receives a message sent by the wireless data compression device, where the message is generated according to first frequency domain data, the first frequency domain data includes N groups of data, N is an integer greater than or equal to 1, the message does not carry ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, the message includes indication information, and the indication information is used to indicate that the ith group of data does not carry a payload.

The message in the embodiment of the present invention is the same as the message in the embodiment corresponding to fig. 6, and is not described herein again.

And 802, the wireless data decompression device decompresses the packet according to the indication information included in the packet to obtain decompressed first frequency domain data, where the decompressed first frequency domain data includes the ith data.

The wireless data decompression apparatus may obtain the decompressed first frequency domain data according to any one of the following three ways.

In a first mode, the packet includes first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries the payload or not, the indication information corresponding to the group identifier of the ith group data is used for indicating that the ith group data does not carry the payload, and the k group data is compressed according to the compression indication information₁Is an integer greater than or equal to 0. The wireless data decompression device decompresses the packet according to the indication information included in the packet, and obtaining decompressed first frequency domain data includes: the wireless data decompression device acquires the k from the load of the message according to the first compression indication information included in the message₁Group data; the wireless data decompression device restores the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

The first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

In the second mode, the packet includes second compression indication information and k carrying the payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0. The wireless data decompression device decompresses the packet according to the indication information included in the packet, and obtaining decompressed first frequency domain data includes: the wireless data decompression device acquires the k from the load of the message according to the second compression indication information included in the message₁Group data; the wireless data decompression device decompresses the k according to the value of N₁Restoring the ith group of data by the group identification of each group of data in the group of data; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

In a third mode, the packet includes third compression indication information and k carrying a payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is an integer greater than or equal to 0. The wireless data decompression device decompresses the packet according to the indication information included in the packet, and obtaining decompressed first frequency domain data includes: the wireless data decompression device restores the ith group of data according to the group identifier of the ith group of data included in the third compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

In the method provided by the embodiment of the present invention, a message received by a wireless data decompression device carries first compression indication information, the message includes group data carrying a payload in the N group of data, the N group of data has group data not carrying a payload, and the wireless data decompression device can obtain decompressed first frequency domain data according to the first indication information carried by the received message and the group data carrying a payload in the first frequency domain data, which is helpful for reducing bandwidth requirements and network establishment cost. The wireless data decompression device receives a message carrying first compression indication information, the message does not comprise any group of data in the N groups of data, namely, the N groups of data do not have group data carrying a payload, the wireless data decompression device can obtain decompressed first frequency domain data according to the first indication information carried by the received message, and the bandwidth requirement and the network construction cost can be favorably reduced. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

If the packet carries at least two paths of frequency domain data, such as the first frequency domain data and the second frequency domain data, the wireless data decompression device can obtain the decompressed first frequency domain data and the decompressed second frequency domain data from the packet. The method for the message to obtain the decompressed first frequency domain data is the same as the method. Only the method for obtaining the decompressed second frequency domain data from the packet will be described below.

In another embodiment provided by the present invention, the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry a jth group of data, the jth group of data does not carry a payload, the jth group of data is one of the M groups of data, M is an integer greater than or equal to 1, and the indication information is further used to indicate that the jth group of data does not carry a payload. The wireless processing and decompressing device further decompresses the packet according to the indication information included in the packet to obtain decompressed second frequency domain data, where the decompressed second frequency domain data includes the jth data.

The wireless data decompression device may obtain the decompressed second frequency domain data in any one of the following three ways.

In a first manner, the packet includes a first payload, a second payload, and the number of frequency domain data, where the number of frequency domain data is the number of payloads included in the packet, and the first payload includes first compression indication information and k of payloads carried in the N groups of data₁The first compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the N groups of data, the first compression indication information comprises a group identifier of each group data in the N groups of data and indication information corresponding to the group identifier of each group data in the N groups of data, the indication information corresponding to the group identifier of each group data in the N groups of data is used for indicating whether the group data carries the payload, the indication information corresponding to the group identifier of the ith group data is used for indicating that the ith group data does not carry the payload, and the second load comprises second compression indication information and k groups of data carrying the payload in the M groups of data₂The second compression indication information is used for indicating group data carrying a payload and group data not carrying the payload in the M group of data, the second compression indication information includes a group identifier of each group data in the M group of data and indication information corresponding to the group identifier of each group data in the M group of data, the indication information corresponding to the group identifier of each group data in the M group of data is used for indicating whether the group data carries the payload, the indication information corresponding to the group identifier of the jth group data is used for indicating that the jth group data does not carry the payload, the second frequency domain data includes the M group of data, M is an integer greater than or equal to 1, the indication information includes the second compression indication information and the first compression indication information, and the k group data includes the first compression indication information and the second compression indication information₁And k is said₂Are each an integer greater than or equal to 0. The wireless data decompression device obtaining the decompressed second frequency domain data includes: the wireless data decompression device acquires the k from a second load of the message according to the second compression indication information included in the message₂Group data; the wireless data decompression device restores the jth group of data according to the indication information corresponding to the group identifier of the jth group of data; said wireless data decompression device according to said jth groupGroup identification of data and said k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

In a second mode, the header of the packet includes the first payload, the second payload, and the number of frequency domain data, where the number of frequency domain data is the number of payloads included in the packet. The first load comprises third compression indication information and k carrying payloads in the N groups of data₁Group data. The third compression indication information is used for indicating a group identifier carrying a payload in the N groups of data. The third compression indication information comprises k₁A group identification for each group of data in the group data. The second load comprises fourth compression indication information and k carrying the payload in the M groups of data₂Group data. The fourth compression indication information is used for indicating a group identifier carrying a payload in the M groups of data. The fourth compression indication information comprises k₂A group identification for each group of data in the group data. K is₁And k is said₂Are each an integer greater than or equal to 0. The indication information includes the third compression indication information and the fourth compression indication information. The wireless data decompression device obtaining the decompressed second frequency domain data includes: the wireless data decompression device obtains the k from the second load of the message according to the fourth compression indication information included in the message₂Group data; the wireless data decompression device is based on the k₂The group identification and the value of M of each group of data in the group data are restored to the jth groupData; the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data.

In a third mode, the header of the packet includes the first payload, the second payload, and the number of the frequency domain data, where the number of the frequency domain data is the number of the payload included in the packet. The first load comprises fifth compression indication information and k carrying payloads in the N groups of data₁Group data. The fifth compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, and the fifth compression indication information includes a group identifier of the i group of data. The second load comprises sixth compression indication information and k carrying the payload in the M groups of data₂Group data. The sixth compression indication information is used to indicate that the group identifier of the M groups of data does not carry a payload, and the sixth compression indication information includes the group identifier of the jth group of data. K is₁And k is said₂Are each an integer greater than or equal to 0. The indication information includes the fifth compression indication information and the sixth compression indication information. The wireless data decompression device obtaining the decompressed second frequency domain data includes: the wireless data decompression device obtains the k from the second load of the message according to the group identifier of the jth group of data in the sixth compression indication information included in the message₂Group data; the wireless data decompression device restores the jth data according to the group identifier of the jth data and the value of M; the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data.

In the method provided by another embodiment of the present invention, the wireless data decompression device may acquire whether each group of data in the N groups of data carries a payload according to at least two pieces of compression indication information carried in the packet, such as the first compression indication information and the second compression indication information. The wireless data decompression device can also know whether each group of data in the M groups of data carries the effective load or not according to at least two pieces of compression indication information carried in the message. The wireless data decompression device can obtain first frequency domain data and second frequency domain data according to the first load, the second load, the first compression indication information and the second compression indication information in the message, and is favorable for improving the transmission efficiency of wireless data.

Fig. 9 is a schematic diagram of a network scenario for transmitting wireless data according to a second embodiment of the present invention. The network shown in fig. 9 may be used to transmit wireless data. In the network shown in fig. 9, the first device 91 is able to communicate with a device (not shown in fig. 9) in the EPC. The first device 91 may communicate with the second device 92, such as with the second device 92 over a packet network, link, or fiber optic. The first device 91 comprises a baseband processing module 911, a wireless data compression means 912 and a wireless data decompression means 913. The second device 92 includes a radio frequency processing module 921, a wireless data decompression device 922, and a wireless data compression device 923. The wireless data compression device 912 may be the same as the wireless data compression device 923, and the wireless data decompression device 913 may be the same as the wireless data decompression device 922.

In the network scenario shown in fig. 9, the communication between the first device 91 and the second device 92 can be divided into a downlink direction and an uplink direction. In one implementation, the downlink direction is a direction in which the first device 91 sends data to the second device 92, and correspondingly, the uplink direction is a direction in which the second device 92 sends data to the first device 91. In another implementation, the downlink direction is a direction in which the second device 92 sends data to the first device 91, and correspondingly, the uplink direction is a direction in which the first device 91 sends data to the second device 92.

The first device 91 and the second device 92 in fig. 9 are capable of two-way communication. If unidirectional communication is implemented between the first device 91 and the second device 92, the first device 91 and the second device 92 may comprise part of the structure of fig. 9, such as: if the first device 91 is implemented to transmit data or information to the second device 92, the first device 91 comprises a baseband processing module 911 and a wireless data compression apparatus 912, and correspondingly, the second device 92 comprises a radio frequency processing module 921 and a wireless data decompression apparatus 922. If the second device 92 is enabled to send data or information to the first device 91, the second device 92 comprises a radio frequency processing module 921 and a wireless data compression device 923, and accordingly, the first device 91 comprises a baseband processing module 911 and a wireless data decompression device 913.

In one implementation, the baseband processing module 911 of the first device 91 may convert the received wireless data into frequency domain data. The baseband processing module 911 transmits the frequency domain data to the wireless data compression apparatus 912. The wireless data compression device 912 compresses the frequency domain data to generate a packet, where the packet does not include an i-th group of data that does not carry a payload in the frequency domain data, the packet includes indication information, the indication information is used to indicate that the i-th group of data does not carry a payload, and the i-th group of data is any group of data in the at least one group of data. The wireless data compression apparatus 912 sends the message to the wireless data decompression apparatus 922 of the second device 92. The wireless data decompression device 922 of the second device 92 decompresses the received packet, and restores the i-th group of data not carrying the payload. The wireless data decompression device 922 obtains decompressed frequency domain data according to the group data carrying the payload and the ith group data not carrying the payload in the at least one group of data included in the packet. The wireless data decompression device 922 sends the decompressed frequency domain data to the rf processing module 921. The rf processing module 921 may convert the decompressed frequency domain data into an rf signal and transmit the rf signal through an antenna (not shown in fig. 9).

In another implementation, the rf processing module 921 of the second device 92 receives the rf signal through an antenna (not shown in fig. 9). The rf processing module 921 converts the received rf signal into a frequency domain signal. The rf processing module 921 sends the frequency domain signal to the wireless data compression device 923. The wireless data compression apparatus 923 may process the frequency domain data in the same manner as the wireless data compression apparatus 912 in the foregoing implementation manner, and the wireless data decompression apparatus 913 in the first device 91 may obtain the decompressed frequency domain data in the same manner as the wireless data decompression apparatus 922 in the foregoing implementation manner. The wireless data decompression means 913 transmits the decompressed frequency domain data to the baseband processing module 911 of the first device 91. The baseband processing module 911 converts the decompressed frequency domain data into time domain data and transmits the time domain data.

Fig. 10(a) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention. The wireless data compression device shown in fig. 10(a) may be any one of the wireless data compression devices in the network shown in fig. 9. The wireless data compression apparatus shown in fig. 10(a) includes: a processor 1001, a memory 1002, a communication interface 1003 and a communication bus 1004. The processor 1001, memory 1002, and communication interface 1003 communicate over a communication bus 1004. The processor 1001 may be a CPU, NP, or other integrated circuit. The memory 1002 may be used to store programs. Optionally, the memory 1002 may also be used to store indication information, such as: one or more of the compression indication information mentioned in the embodiments of the present invention, such as the first compression indication information and/or the second compression indication information, are not illustrated one by one here.

If an IDFT module (not shown in fig. 9) is further included between the baseband processing module 911 and the wireless data compression device 912 in fig. 9, and/or an IDFT module (not shown in fig. 9) is further included between the rf processing module 921 and the wireless data compression device 923 in fig. 9, where the IDFT module converts the frequency domain data output by the baseband processing module 911 or the rf processing module 921 into the first time domain data, the processor 1001 included in the wireless data compression device shown in fig. 10(a) adds an operation of converting the first time domain data into the first frequency domain data to the processor 301 included in the device shown in fig. 3 (a). Specifically, the processor 1001 receives the first time domain data, which is the first antenna carrier data, through the communication interface 1003 from the executable instructions included in the program read from the memory 1002. The first antenna carrier data may be antenna carrier IQ data. Processor 1001 may perform DFT transform on the first time domain data to obtain the first frequency domain data. The first frequency domain data is frequency domain IQ data if the first time domain data is time domain IQ data.

In a specific implementation manner, the wireless data compression apparatus may further include a Frequency domain Radio Interface (FRI) (not shown in fig. 10 (a)), where the FRI processing module obtains the packet according to the first compression indication information and the N groups of data included in the first Frequency domain data. And the FRI processing module sends the message. The first compression indication information and the packet are the same as corresponding contents in fig. 3(a), and are not described herein again. In other words, the FRI processing module can implement the function of the processor 1001 in fig. 10(a) to obtain the message and the function of transmitting the message through the communication interface 1003.

In the wireless data compression apparatus provided in the embodiment of the present invention, the processor 1001 determines, according to a threshold value, whether each group of data in N groups of data included in the first frequency domain data carries a payload, so as to determine group of data that does not carry a payload, such as the i-th group of data. The message obtained by the processor 1001 comprises group data carrying a payload and the processor 1001 sends said message carrying the first frequency domain data to the wireless data decompression device, contributing to reducing bandwidth requirements and network construction costs.

In addition, the wireless data compression apparatus shown in fig. 10(a) can also process at least two paths of frequency domain data, and specific contents can refer to corresponding contents of the wireless data compression apparatus shown in fig. 3(a), which are not described herein again.

Fig. 10(b) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention. The wireless data compression apparatus shown in fig. 10(b) includes: a first obtaining unit 1005, a first determining unit 1006, a second obtaining unit 1007, a transmitting unit 1008, and a receiving unit 1009. Optionally, the wireless data compression apparatus shown in fig. 10(b) further includes: a third obtaining unit 1010 and a second determining unit 1011. The third obtaining unit 1010 and the second determining unit 1011 are the same as the corresponding contents in fig. 3(b), and are not described again here. The first obtaining unit 1005 is an optional unit, if an IDFT module (not shown in fig. 9) is further included between the baseband processing module 911 and the wireless data compression device 912 in fig. 9, and/or an IDFT module (not shown in fig. 9) is further included between the radio frequency processing module 921 and the wireless data compression device 923 in fig. 9, the wireless data compression device in fig. 10(b) includes the first obtaining unit 1005, otherwise the wireless data compression device in fig. 10(b) does not include the first obtaining unit 1005.

The wireless data compression device shown in fig. 10(b) and the wireless data compression device shown in fig. 10(a) may be the same device, such as the wireless data compression device 912 or the wireless data compression device 923 in the network shown in fig. 9. It can be considered that fig. 10(a) shows the contents included in one wireless data compression apparatus from a physical point of view, and fig. 10(b) shows the contents included in one wireless data compression apparatus from a logical point of view. The transmitting function of the transmitting unit 1008 in fig. 10(b) may be performed by the processor 1001 and the communication interface 1003 in fig. 10(a) in cooperation, and the communication interface 1003 may include at least one physical interface. The first obtaining unit 1005, the first determining unit 1006, and the second obtaining unit 1007 in fig. 10(b) may be implemented by the processor 1001 in fig. 10(a) according to executable instructions stored by the memory 1002, and the processor 1001 may include at least one physical processor. The receiving function of the receiving unit 1009 in fig. 10(b) may be performed by the processor 1001 and the communication interface 1003 in fig. 10(a) in cooperation. Alternatively, the third obtaining unit 1010 and the second determining unit 1011 in fig. 10(b) may be implemented by the processor 1001 in fig. 10(a) according to executable instructions stored in the memory 1002. The repeated content in fig. 10(b) and fig. 10(a) is not repeated in the embodiment corresponding to fig. 10 (b).

The receiving unit 1009 in fig. 10(b) is configured to receive first time domain data, which is first antenna carrier data obtained from the first device 91 or the second device 92; the first obtaining unit 1005 is specifically configured to perform DFT on the first time domain data to obtain the first frequency domain data.

In the wireless data compression apparatus provided by the embodiment of the present invention, the first obtaining unit 1005 may convert the received first time domain data into the first frequency domain data. The first determining unit 1006 determines whether each of N groups of data included in the first frequency domain data carries a payload according to a threshold value, so as to determine group data not carrying a payload, such as the i-th group of data. The message obtained by the second obtaining unit 1007 includes group data carrying a payload. The sending unit 1008 sends the packet carrying the first frequency domain data to the wireless data decompression device, which is helpful for reducing bandwidth requirements and network construction cost.

In addition, the wireless data compression apparatus shown in fig. 10(b) can also process at least two paths of frequency domain data, and specific contents can refer to corresponding contents of the wireless data compression apparatus shown in fig. 3(b), which are not described herein again.

Fig. 10(c) is a schematic diagram of a wireless data compression device according to a second embodiment of the present invention. The wireless data compression apparatus shown in fig. 10(c) is the wireless data compression apparatus shown in fig. 10(a) and is added with a decider 1016, and the decider 1016 in the wireless data compression apparatus shown in fig. 10(c) is the same as the decider 316 in the wireless data compression apparatus shown in fig. 3 (c). The processor 1012 in the wireless data compression apparatus shown in fig. 10(c) can implement the operations implemented by the processor 312 in the wireless data compression apparatus shown in fig. 3(c), and can also implement the operations implemented by the processor 1001 in the wireless data compression apparatus shown in fig. 10(a), which are not described herein again.

Fig. 11(a) is a schematic diagram of a wireless data decompression device according to a second embodiment of the present invention. The wireless data decompression apparatus shown in fig. 11(a) may be any one of the wireless data decompression apparatuses in the network shown in fig. 9. The wireless data decompression apparatus shown in fig. 11(a) includes: a processor 1101, a memory 1102, a communication interface 1103, and a communication bus 1104. The processor 1101, memory 1102 and communication interface 1103 communicate over a communication bus 1104. The processor 401 may be a CPU or an NP. The memory 1102 may be used to store programs. The processor 1101 performs operations according to executable instructions included in the program read from the memory 1102. If a DFT module (not shown in fig. 9) is further included between the baseband processing module 911 and the wireless data decompression device 913 of fig. 9, and/or a DFT module (not shown in fig. 9) is further included between the radio frequency processing module 921 and the wireless data decompression device 922, where the DFT module can convert time domain data from the wireless data decompression device into corresponding frequency domain data, the processor 1101 in the wireless data decompression device shown in fig. 11(a) can convert the decompressed first frequency domain data into corresponding time domain data, in addition to the operation that can be realized by the processor 401 in the first embodiment.

For example, the processor 1101 further performs IDFT on the decompressed first frequency domain data to obtain first time domain data. The first time domain data is time domain data corresponding to the decompressed first frequency domain data. The first time domain data obtained by the processor 1101 may be the same as the first time domain data obtained by the wireless data compression apparatus, or may be different from the first time domain data obtained by the wireless data compression apparatus. If the wireless data decompression device shown in fig. 11(a) is the wireless data decompression device 913 in the network shown in fig. 9, the processor 1101 further sends the first time domain data to the baseband processing module 911 through the communication interface 1103. If the wireless data decompression device shown in fig. 11(a) is the wireless data decompression device 922 in the network shown in fig. 9, the processor 1101 further sends the first time domain data to the rf processing module 921 through the communication interface 1103.

In another specific implementation manner, the wireless data decompression apparatus in fig. 11(a) may implement a decompression function, which may be an FRI processing module. And the FRI processing module receives the message sent by the wireless data compression device. The FRI processing module decompresses the packet to obtain the decompressed first frequency domain data, and specifically, the content of the decompressed first frequency domain data may refer to the corresponding content of the wireless data decompression apparatus in the first embodiment, which is not described herein again. In other words, the FRI processing module can implement the function of the processor 1101 in fig. 11(a) to obtain the decompressed first frequency domain data and the function of the processor 1101 to receive the message through the communication interface 1103.

In the wireless data decompression device provided by the embodiment of the present invention, a message received by the wireless data decompression device carries first compression indication information, the message includes group data carrying a payload in the N group of data, and the N group of data has group data not carrying a payload, and the processor 1101 can obtain decompressed first frequency domain data according to the first indication information carried by the received message and the group data carrying a payload in the first frequency domain data, which is helpful for reducing bandwidth requirements and network construction cost. The processor 1101 receives a message carrying first compression indication information, where the message does not include any one group of data in the N groups of data, that is, there is no group of data carrying a payload in the N groups of data, and the wireless data decompression device can obtain decompressed first frequency domain data according to the first indication information carried by the received message. The processor 1101 is capable of converting the decompressed first frequency domain into corresponding time domain data. The wireless data decompression device provided by the embodiment of the invention is beneficial to reducing the bandwidth requirement and the network establishment cost. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

Fig. 11(b) is a schematic diagram of a wireless data decompression device according to a second embodiment of the present invention. The wireless data decompression apparatus shown in fig. 11(b) includes: a receiving unit 1105, a decompressing unit 1106, an obtaining unit 1107, and a transmitting unit 1108. The obtaining unit 1107 is the same as the obtaining unit 407 in the wireless data decompression apparatus provided in the first embodiment, and is not described again here. The receiving unit 1105 is the same as the receiving unit 405 in the wireless data decompression apparatus provided in the first embodiment, and is not described herein again. The decompressing unit 1106 is the same as the decompressing unit 406 in the wireless data decompressing device according to the first embodiment, and is not described herein again. Wherein the obtaining unit 1107 is an optional unit. If a DFT module (not shown in fig. 9) is further included between the baseband processing module 911 and the wireless data decompression device 913 of fig. 9, and/or a DFT module (not shown in fig. 9) is further included between the radio frequency processing module 921 and the wireless data decompression device 922, the DFT module can convert time domain data from the wireless data decompression device into corresponding frequency domain data, the wireless data decompression device shown in fig. 11(b) includes the obtaining unit 1107, otherwise the wireless data decompression device shown in fig. 11(b) does not include the obtaining unit 1107.

The wireless data decompression apparatus shown in fig. 11(b) and the wireless data decompression apparatus shown in fig. 11(a) may be the same apparatus, for example, any one of the wireless data decompression apparatuses in the network shown in fig. 9. It can be considered that fig. 11(a) shows the contents included in a wireless data decompression apparatus from a physical point of view, and fig. 11(b) shows the contents included in a wireless data decompression apparatus from a logical point of view. The receiving function of the receiving unit 1105 in fig. 11(b) may be performed by the processor 1101 and the communication interface 1103 in fig. 11(a) in cooperation, and the communication interface 1103 may include at least one physical interface. The decompression unit 1106 in fig. 11(b) may be implemented by the processor 1101 in fig. 11(a) according to executable instructions stored by the memory 1102, and the processor 1101 may include at least one physical processor. The obtaining unit 1107 in fig. 11(b) may be implemented by the processor 1101 in fig. 11(a) according to executable instructions stored by the memory 1102. The sending function of the sending unit 1108 in fig. 11(b) may be performed by the processor 1101 and the communication interface 1103 in fig. 11(a) in cooperation.

The obtaining unit 1107 is configured to perform IDFT on the decompressed first frequency domain data to obtain first time domain data. The first time domain data is time domain data corresponding to the decompressed first frequency domain data. The first time domain data obtained by the processor 1101 may be the same as the first time domain data obtained by the wireless data compression apparatus, or may be different from the first time domain data obtained by the wireless data compression apparatus.

The sending unit 1108 is configured to send the first time domain data to the first device 91 or the second device 92.

A message received by the wireless data decompression device provided in the embodiment of the present invention carries first compression indication information, where the message includes group data carrying a payload in the N group data, and the N group data includes group data not carrying a payload, and the decompression unit 1106 can obtain decompressed first frequency domain data according to the first indication information carried in the received message and the group data carrying a payload in the first frequency domain data. The obtaining unit 1107 is capable of converting the decompressed first frequency domain data into corresponding time domain data. The wireless data decompression device provided by the embodiment of the invention is beneficial to reducing the bandwidth requirement and the network establishment cost. The wireless data decompression device receives a packet carrying first compression indication information, where the packet does not include any one of the N groups of data, that is, there is no group of data carrying a payload in the N groups of data, and the decompression unit 1106 can obtain decompressed first frequency domain data according to the first indication information carried by the received packet. The obtaining unit 1107 is capable of converting the decompressed first frequency domain data into corresponding time domain data. The wireless data decompression device provided by the embodiment of the invention is beneficial to reducing the bandwidth requirement and the network establishment cost. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

Fig. 12 is a flowchart of a wireless data transmission method according to a second embodiment of the present invention. Fig. 12 is a diagram illustrating a wireless data transmission method according to a second embodiment of the present invention from the perspective of a wireless data compression apparatus. In the wireless data transmission method according to the second embodiment of the present invention, the wireless data compression apparatus may be the wireless data compression apparatus capable of performing DFT according to the embodiment corresponding to fig. 10(a), fig. 10(b), or fig. 10(c), and the wireless data compression apparatus is capable of performing DFT processing on the received first time domain data and obtaining first frequency domain data. The wireless data transmission method provided by the second embodiment of the invention is explained in detail below. The wireless data transmission method provided by the second embodiment of the present invention is described by taking the direction in which the first device 91 transmits wireless data to the second device 92 as an example.

The wireless data compression device receives 1200 first time domain data.

For example, the first time domain data is the same as the first time domain data mentioned in the first embodiment, and is not described herein again. The wireless data compression device may obtain the first time domain data from the baseband processing module 911 included in the device shown in fig. 9. The baseband processing module 911 may be a general baseband processing chip for converting wireless data into time-domain data or a software module for implementing the function, and specific structures and functions thereof are not described herein again.

1201, the wireless data compression apparatus obtains first frequency domain data including N sets of data, N being an integer greater than or equal to 1.

For example, the wireless data compression apparatus may use the method adopted by the DFT module in the embodiment corresponding to fig. 5 to convert the first time domain data into the first frequency domain data, which is not described herein again.

1202, the wireless data compression device determines whether an ith group of data carries a payload according to a threshold value and the ith group of data in the N groups of data, where the ith group of data is any one of the N groups of data.

1203, the wireless data compression device determines that the ith group of data does not carry a payload.

And 1204, the wireless data compression device obtains a message according to the ith group of data, where the message is generated according to the first frequency domain data, and the message does not carry the ith group of data, and includes indication information, where the indication information is used to indicate that the ith group of data does not carry a payload.

1205, the wireless data compression apparatus sends the message to a wireless data decompression apparatus.

1202 to 1205 are the same as 602 to 605 in the first embodiment, and are not described again here.

In the wireless data compression apparatus provided in the embodiments of the present invention, the wireless data compression apparatus may convert the first time domain data into the first frequency domain data. The wireless data compression device determines whether each group of data in the N groups of data included in the first frequency domain data carries a payload according to a threshold value, so as to determine group data not carrying a payload, such as the ith group of data. The message obtained by the wireless data compression device comprises the group data carrying the effective load and does not comprise the group data not carrying the effective load. The wireless data compression device sends the message carrying the first frequency domain data to the wireless data decompression device, which is beneficial to reducing the bandwidth requirement and the network construction cost.

Fig. 13 is a flowchart of a wireless data transmission method according to a second embodiment of the present invention. Fig. 12 is a diagram illustrating a wireless data transmission method according to a second embodiment of the present invention from the perspective of a wireless data decompression apparatus. The wireless data decompression device may be the wireless data decompression device with IDFT function as described in the corresponding embodiment of fig. 11(a) or fig. 11 (b). The wireless data decompression device can perform IDFT processing on the decompressed first frequency domain data to obtain time domain data corresponding to the decompressed first frequency domain data. The wireless data transmission method provided by the second embodiment of the present invention is described by taking the direction in which the first device 91 transmits wireless data to the second device 92 as an example. The wireless data transmission method provided by the second embodiment of the invention is explained in detail below.

1301, the wireless data decompression device receives a message sent by the wireless data compression device, the message is generated according to first frequency domain data, the first frequency domain data includes N groups of data, N is an integer greater than or equal to 1, the message does not carry ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, the message includes indication information, and the indication information is used for indicating that the ith group of data does not carry a payload.

1302, the wireless data decompressing device decompresses the packet according to the indication information included in the packet, and obtains decompressed first frequency domain data, where the decompressed first frequency domain data includes the i-th group of data.

1303, the wireless data decompressing device performs IDFT on the decompressed first frequency domain data to obtain first time domain data.

For example, the method for performing the IDFT operation by the wireless data decompression device may refer to the processing performed by the IDFT module in the embodiment corresponding to fig. 5, and is not described herein again. The first time domain data in 1303 may be the same as the first time domain data received by the wireless data compression apparatus, or may be different from the first time domain data received by the wireless data compression apparatus.

The contents of 1301 to 1302 in the embodiment of the present invention are the same as those of 801 to 802 in fig. 8, and are not repeated herein.

In the method provided by the embodiment of the present invention, a message received by a wireless data decompression device carries first compression indication information, the message includes group data carrying a payload in the N group of data, the N group of data includes group data not carrying a payload, and the wireless data decompression device can obtain decompressed first frequency domain data according to the first indication information carried by the received message and the group data carrying a payload in the first frequency domain data. The wireless data decompression device can convert the decompressed first frequency domain data into corresponding time domain data. The wireless data decompression device provided by the embodiment of the invention is beneficial to reducing the bandwidth requirement and the network establishment cost. The wireless data decompression device receives a message carrying first compression indication information, the message does not include any group of data in the N groups of data, namely, the N groups of data do not have group data carrying a payload, and the wireless data decompression device can obtain decompressed first frequency domain data according to the first indication information carried by the received message. The wireless data decompression device can convert the decompressed first frequency domain data into corresponding time domain data. The wireless data decompression device provided by the embodiment of the invention is beneficial to reducing the bandwidth requirement and the network establishment cost. The message received by the wireless data decompression device carries the second compression indication information or the third compression indication information, and the same effect as that of the message received by the wireless data decompression device carrying the first compression indication information can be obtained, which is not described herein again.

An embodiment of the present invention further provides a system for transmitting wireless data, as shown in fig. 14. The system for transmitting wireless data comprises a wireless data compression device and a wireless data decompression device. The wireless data compression device and the wireless data decompression device may communicate over an optical fiber or a packet network. The wireless data compression apparatus may be the wireless data compression apparatus shown in fig. 3(a), fig. 3(b) or fig. 3(c), and correspondingly, the wireless data decompression apparatus may be the wireless data decompression apparatus shown in fig. 4(b) or fig. 4 (a). The wireless data compression apparatus may be the wireless data compression apparatus shown in fig. 10(a), 10(b) or 10(c), and correspondingly, the wireless data decompression apparatus may be the wireless data decompression apparatus shown in fig. 11(b) or 11 (a). The detailed structures of the wireless data compression apparatus and the wireless data decompression apparatus are not described herein again.

The wireless data compression device obtains first frequency domain data, wherein the first frequency domain data comprises N groups of data, and N is an integer greater than or equal to 1; the wireless data compression device determines whether the ith group of data carries a payload or not according to a threshold value and the ith group of data in the N groups of data, wherein the ith group of data is any group of data in the N groups of data; the wireless data compression device determining that the ith group of data does not carry a payload; the wireless data compression device obtains a message according to the ith group of data, wherein the message is generated according to the first frequency domain data, the message does not carry the ith group of data, and the message comprises indication information which is used for indicating that the ith group of data does not carry a payload; and the wireless data compression device sends the message to a wireless data decompression device. The wireless data compression device obtains first frequency domain data, specifically: the wireless data compression device obtains first frequency domain data from the BBU or the RRU.

The wireless data decompression device receives a message sent by the wireless data compression device, wherein the message is generated according to first frequency domain data, the first frequency domain data comprises N groups of data, N is an integer greater than or equal to 1, the message does not carry ith group of data, the ith group of data does not carry a payload, the ith group of data is one of the N groups of data, the message comprises indication information, and the indication information is used for indicating that the ith group of data does not carry a payload; and the wireless data decompression device decompresses the message according to the indication information included in the message to obtain decompressed first frequency domain data, wherein the decompressed first frequency domain data includes the ith group of data.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data specifically includes: the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the first compression indication information is the indication information; the wireless data compression device carries the k of the effective load in the N groups of data according to the first compression indication information₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

Correspondingly, the decompressing device for wireless data decompresses the packet according to the indication information included in the packet, and obtaining the decompressed first frequency domain data specifically includes: the wireless data decompression device acquires the k from the load of the message according to the first compression indication information included in the message₁Group data; the wireless data decompression device restores the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data specifically includes: the wireless data compression device generates second compression indication information according to the ith group of data, wherein the second compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the second compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information; the wireless data compression device compresses the k according to the second compression indication information₁Packaging the group data to generate the message, wherein the message comprises the second compression indication information and the k₁Group data.

Correspondingly, the decompressing device for wireless data decompresses the packet according to the indication information included in the packet, and obtaining the decompressed first frequency domain data specifically includes: the wireless data decompression device acquires the k from the load of the message according to the second compression indication information included in the message ₁Group data; the wireless data decompression device decompresses the k according to the value of N₁Restoring the ith group of data by the group identification of each group of data in the group of data; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data specifically includes: the wireless data compression device generates third compression indication information according to the ith group of data,the third compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, the third compression indication information includes a group identifier of the ith group of data, and the third compression indication information is the indication information; the wireless data compression device carries the k of the effective load in the N groups of data according to the third compression indication information₁Packaging the group data to generate the message, wherein the message comprises the third compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

Correspondingly, the decompressing device for wireless data decompresses the packet according to the indication information included in the packet, and obtaining the decompressed first frequency domain data specifically includes: the wireless data decompression device restores the ith group of data according to the group identifier of the ith group of data included in the third compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain decompressed first frequency domain data by using the group identification of each group of data in the group data.

In another system provided by the embodiment of the present invention, the wireless data compression apparatus and the wireless data decompression apparatus may further transmit at least two paths of frequency domain data. In addition to the functions that the wireless data compression device in the embodiment corresponding to fig. 14 can implement, the wireless data compression device in the system provided in this embodiment can also obtain second frequency domain data, where the second frequency domain data includes M groups of data, and M is an integer greater than or equal to 1; the wireless data compression device determines whether the jth data carries a payload or not according to a threshold value and jth data in the M groups of data, wherein the jth data is any one group of data in the M groups of data; the wireless data compression device determines that the jth data set does not carry a payload.

Correspondingly, the wireless data decompression device provided in this embodiment can implement the function that can be implemented by the wireless data decompression device in the embodiment corresponding to fig. 14, and can also decompress the packet according to the indication information included in the packet to obtain decompressed second frequency domain data, where the decompressed second frequency domain data includes the jth group of data.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data specifically includes: the wireless data compression device generates first compression indication information according to the ith group of data, wherein the first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether a payload is carried or not, and the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry the payload; the wireless data compression device generates second compression indication information according to the jth group of data, wherein the second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried or not, and the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry the payload; the wireless data compression device carries k of the effective load in the N groups of data according to the first compression indication information and the second compression indication information₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

Accordingly, the wireless dataThe decompressing device decompresses the packet according to the indication information included in the packet, and obtaining decompressed first frequency domain data specifically includes: the wireless data decompression device acquires the k from the load of the message according to the first compression indication information included in the message₁Group data; the wireless data decompression device restores the ith group of data according to the indication information corresponding to the group identifier of the ith group of data included in the first compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

Correspondingly, the decompressing device of the wireless data decompresses the packet according to the indication information included in the packet, and obtaining the decompressed second frequency domain data specifically includes: the wireless data decompression device acquires the k from a second load of the message according to the second compression indication information included in the message₂Group data; the wireless data decompression device restores the jth group of data according to the indication information corresponding to the group identifier of the jth group of data; the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain decompressed second frequency domain data by using the group identification of each group of data in the group of data.

For example, the wireless data compression device obtains a packet according to the ith group of dataComprises the following steps: the wireless data compression device generates third compression indication information according to the ith group of data, wherein the third compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the third compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁Is an integer greater than or equal to 0; the wireless data compression device generates fourth compression indication information according to the jth group of data, wherein the fourth compression indication information is used for indicating a group identifier carrying a payload in the M groups of data, and the fourth compression indication information comprises k₂Group identification of each group of data in group data, k₂The group data is the group data carrying the payload in the M group data, k₂Is an integer greater than or equal to 0; the wireless data compression device compresses the k according to the third compression indication information and the fourth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the third compression indication information, the fourth compression indication information and the k₁Group data and k₂Group data.

Correspondingly, the step of obtaining the decompressed first frequency domain data by the wireless data decompression device specifically includes: the wireless data decompression device obtains the k from the load of the message according to the third compression indication information included in the message₁Group data; the wireless data decompression device decompresses the k according to the value of N₁Restoring the ith group of data by the group identification of each group of data in the group of data; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

Correspondingly, the step of obtaining the decompressed second frequency domain data by the wireless data decompression device specifically includes: the wireless data decompression device decompresses the fourth compression indication information included in the message according to the messageObtaining the k from the second load of the message₂Group data; the wireless data decompression device is based on the k₂Restoring the jth data set by the group identification of each group of data in the group data and the numerical value of M; the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data.

For example, the obtaining, by the wireless data compression device, a packet according to the ith group of data specifically includes: the wireless data compression device generates fifth compression indication information according to the ith group of data, wherein the fifth compression indication information is used for indicating a group identifier which does not carry a payload in the N groups of data, and the fifth compression indication information comprises the group identifier of the ith group of data; the wireless data compression device generates sixth compression indication information according to the jth group of data, wherein the sixth compression indication information is used for indicating a group identifier which does not carry a payload in the M group of data, and the sixth compression indication information comprises the group identifier of the jth group of data; the wireless data compression device compresses the k according to the fifth compression indication information and the sixth compression indication information₁Group data and k₂Packaging the group data to generate the message, wherein the load of the message carries the fifth compression indication information, the sixth compression indication information and the k₁Group data and k₂Group data.

Correspondingly, the obtaining, by the wireless data decompression device, the decompressed first frequency domain data specifically includes: the wireless data decompression device restores the ith group of data according to the group identifier of the ith group of data included in the fifth compression indication information; the wireless data decompression device is used for decompressing the wireless data according to the group identification of the ith group of data and the k₁And recombining the N groups of data to obtain the decompressed first frequency domain data by using the group identifier of each group of data in the group data.

Correspondingly, the wireless data decompression device obtains the decompressed second frequency domainThe data specifically includes: the wireless data decompression device restores the jth data according to the group identifier of the jth data included in the sixth compression indication information; the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂And recombining the M groups of data to obtain the decompressed second frequency domain data by using the group identifier of each group of data in the group of data.

In the system provided by the embodiment of the present invention, the wireless data compression device can compress at least two paths of frequency domain data into one message, and send the message to the wireless data decompression device, which is helpful for providing transmission efficiency of wireless data. Of course, the wireless data compression apparatus may compress the first frequency domain data and the second frequency domain data into two messages, respectively, that is, one message carries one frequency domain data, which may refer to the embodiment corresponding to fig. 14.

Optionally, in the method, the apparatus, and the system provided in the embodiments of the present invention, the wireless data compression apparatus may be located at a BBU side, and correspondingly, the wireless data decompression apparatus is located at an RRU side, where the wireless data compression apparatus may be a functional module of the BBU, or may be a device that is set independently of the BBU; the wireless data decompression device may be a functional module of the RRU, or may be a device that is set independently of the RRU.

Optionally, in the method, the apparatus, and the system provided in the embodiments of the present invention, the wireless data compression apparatus may be located at an RRU side, and correspondingly, the wireless data decompression apparatus is located at a BBU side, where the wireless data compression apparatus may be a functional module of an RRU or an apparatus that is set independently of the RRU; the wireless data decompression device can be a functional module of the BBU, and can also be a device arranged independently of the BBU.

The general purpose processor may be a microprocessor or the processor may be any conventional processor. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. When implemented in software, the code implementing the above described functionality may be stored on a computer readable medium. Computer readable media includes computer storage media. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: the computer-readable medium may be a Random Access Memory (RAM), a read-only memory (EEPROM), an electrically erasable programmable read-only memory (CD-ROM), or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer. The computer readable medium may be a Compact Disc (CD), a laser disc, a Digital Video Disc (DVD), a floppy disc or a blu-ray disc.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention and the advantageous effects thereof have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A method for transmitting wireless data, the method comprising:

and the wireless data compression device sends the message.

2. The method of claim 1, wherein each of the N sets of data comprises L₁A data of L₁Each of the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1;

the wireless data compression device determines the L₁Whether or not the individual data includes L₂Data whose number is greater than the threshold value, L₂The data with the number value larger than the threshold value is L₂The value of the subcarrier corresponding to each data of the data is larger than the threshold value, and the L is₂The value of the subcarrier corresponding to each data of each data is L₂Value of vector magnitude, L, of subcarrier corresponding to each data of the data₂Less than or equal to L₁。

3. The method of claim 1, wherein each of the N sets of data comprises L₁A data of L₁Each of the data corresponds to a subcarrier, L₁Is an integer greater than or equal to 1;

4. The method according to any one of claims 1 to 3, wherein the obtaining, by the wireless data compression device, a message according to the ith group of data comprises:

5. The method of claim 4, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is an indication information corresponding to the group identifier of the ith group of data, and a value of the ith bit is the indication information corresponding to the group identifier of the ith group of data.

6. The method according to any one of claims 1 to 3, wherein the obtaining, by the wireless data compression device, a message according to the ith group of data comprises:

7. The method according to any one of claims 1 to 3, wherein the obtaining, by the wireless data compression device, a message according to the ith group of data comprises:

8. The method of any of claims 1-7, wherein the wireless data compression device obtaining the first frequency domain data comprises:

9. A method according to any one of claims 1 to 3, wherein the method further comprises:

10. The method of claim 9, wherein each of the M sets of data comprises L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

11. The method of claim 9, wherein each of the M sets of data comprises L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

12. The method according to any one of claims 9 to 11, wherein the obtaining, by the wireless data compression device, a message according to the ith group of data comprises:

the wireless data compression device is based onThe first compression indication information and the second compression indication information carry k of the payload in the N groups of data₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

13. The method of claim 12, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is an indication information corresponding to the group identifier of the ith data;

14. A method for transmitting wireless data, the method comprising:

15. The method of claim 14, wherein the packet comprises first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the k group of data does not carry a payload₁Is an integer greater than or equal to 0;

16. The method of claim 15, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is an indication information corresponding to a group identifier of the ith data, and a value of the ith bit is the indication information corresponding to the group identifier of the ith data.

17. The method of claim 14, wherein the packet comprises second compression indication information and k carrying a payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0;

the wireless data decompression device decompresses the k according to the value of N₁Restoring the ith group of data by the group identification of each group of data in the group of data;

18. The method of claim 14, wherein the packet comprises third compression indication information and k carrying a payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is an integer greater than or equal to 0;

19. The method of any one of claims 14 to 18, further comprising:

20. The method according to claim 14, wherein the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry j group of data, the j group of data does not carry a payload, the j group of data is one of the M groups of data, M is an integer greater than or equal to 1, and the indication information is further used for indicating that the j group of data does not carry a payload;

the method further comprises the following steps:

21. The method of claim 20, wherein the step of selecting the target,the message comprises a first load, a second load and the quantity of frequency domain data, wherein the quantity of the frequency domain data is the quantity of the load comprised by the message, and the first load comprises first compression indication information and k of the N groups of data carrying effective loads₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether to carry a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the second load comprises second compression indication information and k groups of data carrying payloads in the M groups of data₂The second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried or not, the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry a payload, the second frequency domain data comprises the M groups of data, M is an integer greater than or equal to 1, the indication information comprises the second compression indication information and the first compression indication information, and the k is an integer greater than or equal to 1₁And k is said₂Are integers greater than or equal to 0;

the wireless data decompression device is used for decompressing the data according to the group identification of the jth group of data and the k₂Group dataThe M groups of data are recombined to obtain decompressed second frequency domain data.

22. The method of claim 21, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is an indication information corresponding to a group identifier of the ith data;

23. A wireless data compression apparatus, the apparatus comprising:

and the sending unit is used for sending the message.

24. The wireless data compression apparatus of claim 23, wherein each of the N sets of data comprises L₁A data of L₁Each of the data corresponds to a subcarrier, L₁The first determining unit is specifically configured to:

25. The wireless data compression apparatus of claim 23, wherein each of the N sets of data comprises L₁A data of L₁Each of the data corresponds to a subcarrier, L₁The first determining unit is specifically configured to:

26. The wireless data compression device of any one of claims 23-25, wherein the second obtaining unit is specifically configured to:

according toThe first compression indication information is k carrying the payload in the N groups of data₁Packaging the group data to generate the message, wherein the message comprises the first compression indication information and the k₁Group data, k₁Is an integer greater than or equal to 0.

27. The wireless data compression device as claimed in claim 26, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is an indication information corresponding to the group identifier of the ith data, and a value of the ith bit is the indication information corresponding to the group identifier of the ith data.

28. The wireless data compression device of any one of claims 23-25, wherein the second obtaining unit is specifically configured to:

generating second compression indication information according to the ith group of data, wherein the second compression indication information is used for indicating a group identifier carrying a payload in the N groups of data, and the second compression indication information comprises k₁Group identification of each group of data in group data, k₁The group data is the group data carrying the payload in the N group data, k₁The second compression indication information is an integer greater than or equal to 0, and the second compression indication information is the indication information;

29. The wireless data compression device of any one of claims 23-25, wherein the second obtaining unit is specifically configured to:

30. The wireless data compression device of any one of claims 23-29, further comprising a receiving unit,

31. The wireless data compression device as claimed in any one of claims 23 to 25, further comprising:

32. The wireless data compression apparatus of claim 31, wherein each of the M groups of data comprises L₃A data of L₃Each of the dataData corresponds to one subcarrier, L₃Is an integer greater than or equal to 1;

the second determining unit is specifically configured to:

33. The wireless data compression apparatus of claim 31, wherein each of the M groups of data comprises L₃A data of L₃Each of the data corresponds to a subcarrier, L₃Is an integer greater than or equal to 1;

the second determining unit is specifically configured to:

34. The wireless data compression device of any one of claims 31-33, wherein the second obtaining unit is specifically configured to:

according to the first compression indication information and the second compression indication information, carrying k of the effective load in the N groups of data₁Group data and k carrying payload in the M group data₂Packaging the group data to generate the message, wherein the message comprises a first load, a second load and the quantity of frequency domain data, the quantity of the frequency domain data is the quantity of the load included by the message, and the first load carries the first compression indication information and the k₁Group data, the second payload carrying the second compression indication information and the k₂Group data, the indication information including the first compression indication information and the second compression indication information, the k₁Is an integer greater than or equal to 0, k₂Is an integer greater than or equal to 0.

35. The wireless data compression device as claimed in claim 34, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is a group id of the ith data, and a value of the ith bit is indication information corresponding to the group id of the ith data;

36. A wireless data decompression apparatus, comprising:

37. The wireless data decompression apparatus according to claim 36, wherein the message comprises first compression indication information and k carrying payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier, the indication information corresponding to the group identifier is used for indicating whether a group corresponding to the group identifier carries a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the k group of data does not carry a payload₁Is an integer greater than or equal to 0;

the decompression unit is specifically configured to:

38. The wireless data decompression apparatus according to claim 37, wherein the first compression indication information is an N-bit bitmap, an ith bit of the N-bit bitmap is located in the N-bit bitmap and is a group id of the ith data, and a value of the ith bit is indication information corresponding to the group id of the ith data.

39. The wireless data decompression apparatus according to claim 36, wherein the message comprises second compression indication information and k carrying payload in the N groups of data₁Group data, the second compression indication information is the indication information, the second compression indication information is used for indicating the group identifier carrying the payload in the N groups of data, and the second compression indication information includes the k₁Group identification of each group of data in group data, k₁Is an integer greater than or equal to 0;

the decompression unit is specifically configured to:

40. The wireless data decompression apparatus according to claim 36, wherein the message comprises third compression indication information and k carrying payload in the N groups of data₁Group data, the third compression indication information is the indication information, the third compression indication information is used for indicating a group identifier which does not carry a payload in the N group data, the third compression indication information includes a group identifier of the i group data, and the k is₁Is greater than or equal toAn integer equal to 0;

the decompression unit is specifically configured to:

41. The wireless data decompression apparatus according to any one of claims 36 to 40, further comprising:

42. The wireless data decompression apparatus according to claim 36, wherein the packet further includes second frequency domain data, the second frequency domain data includes M groups of data, the packet does not carry j group of data, the j group of data does not carry a payload, the j group of data is one of the M groups of data, M is an integer greater than or equal to 1, the indication information is further used to indicate that the j group of data does not carry a payload, the decompression unit is further used to:

43. The wireless data decompression device according to claim 42, wherein the message comprises a first payload, a second payload and frequency domain dataThe number of the frequency domain data is the number of the payload included in the packet, and the first payload includes first compression indication information and k carrying a payload in the N groups of data₁The first compression indication information comprises a group identifier of each group of data in the N groups of data and indication information corresponding to the group identifier of each group of data in the N groups of data, the indication information corresponding to the group identifier of each group of data in the N groups of data is used for indicating whether to carry a payload, the indication information corresponding to the group identifier of the ith group of data is used for indicating that the ith group of data does not carry a payload, and the second load comprises second compression indication information and k groups of data carrying payloads in the M groups of data₂The second compression indication information comprises a group identifier of each group of data in the M groups of data and indication information corresponding to the group identifier of each group of data in the M groups of data, the indication information corresponding to the group identifier of each group of data in the M groups of data is used for indicating whether a payload is carried or not, the indication information corresponding to the group identifier of the jth group of data is used for indicating that the jth group of data does not carry a payload, the second frequency domain data comprises the M groups of data, M is an integer greater than or equal to 1, the indication information comprises the second compression indication information and the first compression indication information, and the k is an integer greater than or equal to 1₁And k is said₂Are integers greater than or equal to 0;

the decompression unit is specifically configured to:

44. The wireless data decompression apparatus according to claim 43, wherein the first compression indication information is an N-bit bitmap, the position of the ith bit of the N-bit bitmap in the N-bit bitmap is the group identifier of the ith group of data, and the value of the ith bit is the indication information corresponding to the group identifier of the ith group of data;

45. A system for transmitting wireless data, the system comprising a wireless data compression apparatus and a wireless data decompression apparatus, wherein the wireless data compression apparatus is the wireless data compression apparatus of any one of claims 23 to 35; the wireless data decompression device according to any one of claims 36 to 44.