WO2011144151A1

WO2011144151A1 - In-phase and quadrature data transmission method and device

Info

Publication number: WO2011144151A1
Application number: PCT/CN2011/075181
Authority: WO
Inventors: 宁科; 包盛花; 蒋亚军
Original assignee: 华为技术有限公司
Priority date: 2010-06-30
Filing date: 2011-06-02
Publication date: 2011-11-24
Also published as: CN102316517A

Abstract

The embodiment of the present invention discloses an in-phase and quadrature (IQ) data transmission method, which includes that NSAM sampling points in a single antenna single carrier symbol block of IQ data to be transmitted are divided into p data blocks, each data block includes q sampling points; the common index part exp, the index function f(exp) and each mantissa part of the q sampling points in each data block are determined respectively; the common index part and each mantissa part of the q sampling points in each data block are mapped into the corresponding data blocks respectively; and the p data blocks are transmitted through common public radio interface CPRI frames. By using the embodiment of the present invention, the NSAM sampling points are divided into the p data blocks, each data block includes the q sampling points, after the q sampling points are determined as the common index part, the index function and the mantissa part, they are mapped into the data blocks, the bit width required by data transmission can be reduced, and the efficiency of data transmission is improved.

Description

The present invention claims the priority of the Chinese application filed on Jun. 30, 2010, with the application number of 201010219142.9, entitled "IQ Data Transmission Method and Apparatus", the entire contents of which are incorporated by reference. In this application. Technical field

The present invention relates to the field of data transmission in the field of wireless communication technologies, and in particular, to an IQ data transmission method and apparatus. Background technique

CPRI (Common Public Radio Interface) is an interface standard between REC (Radio Equipment Controller) and RE (Radio Equipment) in wireless base station equipment developed by several communication equipment manufacturers. .

In the existing IQ data transmission mode of CPRI, each sampling point includes a real part I and an imaginary part Q, and is directly interleaved and transmitted according to the quantization bit widths I and Q.

The inventor has found that the prior art has the following disadvantages: In the case of an increase in bandwidth or carrier, direct transmission of the original undeformed IQ data may cause a surge in the traffic of the CPRI interface, and the number of CPRI transmission interfaces or the line rate of the CPRI needs to be increased physically. Third, in order to be able to adapt to the needs of larger IQ data traffic. This leads to a significant increase in hardware costs. Summary of the invention

The problem to be solved by the embodiments of the present invention is: To provide an IQ data transmission method, which improves the transmission rate of IQ data while controlling the hardware cost.

In order to solve the above technical problem, an aspect of the present invention provides an IQ data transmission method, including: dividing s samples in a single antenna single carrier container block AxC Container Block in the IQ data to be transmitted into p data blocks, Each data block contains q samples; respectively determine the common exponent part exp of the q samples in each data block, the exponential function f(exp) and the respective mantissa parts; respectively, q samples of each data block The common index portion and the respective mantissa portion are mapped into corresponding data blocks; p data blocks are transmitted through the general public radio interface CPRI frame.

Another aspect of the present invention provides an IQ data transmission apparatus, including: a splitting module, The s samples in a single antenna single carrier AxC container block in the IQ data to be transmitted are divided into p data blocks, each data block includes q samples; and a compression module is used to respectively determine q in each data block. a common exponent part of the sample exp, an exponential function f(exp) and a respective mantissa portion; a mapping module for respectively mapping the common exponent portion and the respective mantissa portion of the q samples in each data block to corresponding data a block; a transmission module, configured to transmit p data blocks through a common public radio interface CPRI frame.

Compared with the prior art, the main differences and effects of the embodiments of the present invention are as follows:

In the embodiment of the present invention, s samples are divided into p data blocks, each data block includes q samples, and the q samples are determined as a common index portion, an exponential function, and a mantissa portion, and then mapped to data. In the block, the bit width required for data transmission can be reduced, and the efficiency of data transmission is improved. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic flow chart of an IQ data transmission method according to an embodiment of the present invention;

2 is a schematic diagram of decomposition of s samples in an AxC container block according to an embodiment of the present invention; FIG. 3 is a map of common exponent and mantissa portions of q samples in the embodiment; FIG. 4 is a first embodiment of the present invention; Schematic diagram of an IQ data transmission device;

FIG. 5 is a schematic flowchart of an IQ data transmission method according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of decomposition of N _SAM samples in an AxC symbol block according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of an IQ data transmission apparatus according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention. The above described objects, features and advantages of the embodiments of the present invention will become more apparent and understood. An embodiment of the present invention provides a method for transmitting an IQ data. FIG. 1 is a schematic flowchart of a method for transmitting an IQ data according to an embodiment of the present invention. As shown in FIG. 1 , a method according to an embodiment of the present invention includes:

S101. The s samples of an AxC container block in the IQ data to be transmitted are divided into p data blocks, and each data block includes q samples.

Here, s samples are continuously transmitted IQ data, where I is the real part of each sample and Q is the imaginary part of each sample.

2 is a schematic diagram of decomposing s samples in an AxC container block according to an embodiment of the present invention. As shown in FIG. 2, an AxC container block includes s samples, and the IQ data of each AxC container block to be transmitted is included. s samples are divided into p data blocks, each of which contains q samples. It can be understood that: s satisfies the condition: S = p*q. Wherein, N _ST represents the number of padding bits in an antenna-carrier container block, and stuffing bits are padding bits.

In addition, when dividing s samples into p data blocks, the size of q can be determined according to whether S is a prime number and the size of s, so that q samples are determined by the common index portion and the respective mantissa portions in the subsequent steps. At the point, the accuracy of the sample is guaranteed, and the bit width of the common index portion is limited to an appropriate range to ensure the EVM (error vector magnitude) performance of the sample.

In this embodiment, the first threshold may be preset. When the s value is less than or equal to the first preset threshold, the s samples are divided into one data block, that is, p=l, and q=s.

Or when s is a prime number, since s cannot be decomposed into factors other than 1 and s itself, it is also possible to divide s samples into one data block, that is, p = l, and q = s.

When s is greater than the first preset threshold, and s is non-prime, then q is the factor value of s that is closest to the first preset threshold.

In order to better illustrate and understand the embodiment, the first threshold value is 8 in this embodiment. When s is less than or equal to 8, s samples are divided into one data block, and the number of samples in each data block is q=s. When s is a prime number, s samples are also divided into one data block, and the number of samples in each data block is q=s. When s is greater than 8, and s is non-prime, q is a factor closest to 8 for s. It can be understood that the value of the first threshold can be determined according to the specific value of s. The above description is for better understanding of the embodiment, and does not impose any limitation on the present invention. Table 1 shows the values of q corresponding to the E-UTRA system in the present embodiment, as shown in Table 1. When s is 8, the factor of s is 1, 2, 4, 8, where 8 is the factor closest to 8, so q=8, since s=q*p, therefore, p=l.

When s is 2, the factors of s have 1 and 2, where 2 is the factor closest to 8, so q=2, since s=q*p, therefore, p=4.

Table 1

S102. Determine a common exponent part exp, an exponential function f(exp), and a respective mantissa part of q samples in each data block.

In this step, the p data blocks formed in the previous step are processed separately, and the common exponential part exp, the exponential function f(exp) part of each of the q samples in each data block, and each sample point are respectively determined. The mantissa part. That is, each of the q samples is expressed and calculated using the common exponent portion exp, the exponential function f(exp), and its own mantissa portion.

For example, in the present embodiment, each of the q samples includes I and Q, I is the real part of one of the samples, and Q is the imaginary part of one of the samples.

I can satisfy the following conditions: ι = π , where I' is the fraction of the real part of the sample, and 2 is the base of the exponential function.

r _ r > ^ f (exp)

Q can satisfy the following conditions: , where Q' is the mantissa of the imaginary part of one of the samples, and 2 is the base of the exponential function.

In the above method, I and Q of q samples are determined, and the bit width occupied by the q samples includes two parts: the bit width of the common index part, and the bit width of the mantissa part of each sample.

Wherein, Q and Q of samples can share a common exponent part exp, and the common exponent part exp accounts for 2N bits, and the equivalent bit width Mc of each sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , where L is the nibble width of I or Q for each sample, and ceil is rounded up.

When the I and Q of the q samples use different common index parts, then the common index of I is the first common index part, the first common index part accounts for N bits, and the common index part of Q of q samples is the first In the second common index part, the second common index part occupies N bits, and the equivalent bit width Mc of a single sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , L is the I of each sample Or the mantissa of Q is wide, and ceil means rounding up.

S103. Map a common exponent portion and a respective mantissa portion of q samples in each data block to corresponding data blocks, respectively.

In S102, the q samples in each data block are respectively determined by the common index part, the exponential function and the mantissa part to determine the I and Q of the sample, and in this step, the common index part corresponding to the q samples and q are The mantissa part of each sample point is mapped to the corresponding data block according to the mapping pattern.

For example, mapping a common index portion of q samples in each data block to a mantissa portion according to a mapping pattern, and mapping a mantissa portion of q samples in each data block to a corresponding data block, the mapping pattern Is the default by the CPRI sender and the CPRI receiver.

It can be understood that the parameters of the exponential function and the parameters of the exponential function can be additionally determined by high layer signaling, or by the transmitting and receiving parties by default.

3a-3b are diagrams showing the transmission of the common exponent portion and the mantissa portion of q samples in the embodiment of the present invention, as shown in Fig. 3a, for the first sample, q = l, V ^! [0: L-1] For the mantissa part obtained after the real part of the sample is compressed, Q' ^! [0: L-1] is the mantissa part obtained after the imaginary part of the sample is compressed, and exp[0:2N-l] is the sharing of I and Q. The public index part of exp.

It can be understood that the I and Q of the sample can also use different common index parts exp, respectively, and the common index part of I and the common index part of Q each occupy N bits.

As shown in Figure 3b, for other samples after the first sample, q is greater than 1, V ^j [0:

L-1] is the mantissa part of the real part of the sample, Q' ^j [0: L-1] is the mantissa part of the imaginary part of the sample, and exp[0:2N-l] is I and Q. The shared common index portion exp, j represents the jth sample, j = [0 - (ql)]. It can be understood that the I and Q of the samples can also use different common index parts exp, respectively, and the common index part of I and the common index part of Q each occupy N bits.

When mapping samples, you can map the common exponent part of the sample according to the mapping pattern. Between the mantissa parts of the point, and map the mantissa part of the q samples in each data block to the corresponding data block. For example, when mapping a sample, the common exponent portion can be mapped behind the mantissa portion of the first sample; of course, the common exponent portion can also be mapped to the front of all the mantissa portions, or elsewhere, mapping The pattern is defaulted by the CPRI sender and the CPRI receiver.

S104. Transmit p data blocks by using a common public radio interface CPRI frame.

After mapping the q sampling points in each data block into the data block, s sampling points in one AxC container block are divided into p data blocks, mapped into CPRI frames, and p data blocks are transmitted through the CPRI frame. .

In addition, in the foregoing embodiment, the value of one or more of the exponential function f(exp), the parameter in the exponential function f(exp), q, N, L may also be determined by higher layer signaling, or may be sent by the CPRI. The value of one or more of the default exponential function f(exp), the exponential function f(exp), the q, N, L, and the CPR I end.

Further, in this embodiment, the method may further include:

S105. The CPRI receiving end receives the data block, and recovers the sample value according to the common index part and the mantissa part of the sample point.

It can be understood that the above four steps can be performed by the CPRI transmitting end. After the transmitting end sends the data to the receiving end, the receiving end receives the data, and uses the common index part of the received sample according to the corresponding algorithm when compressing. The exponential function part and the mantissa part calculate the sample value, thereby restoring the sample value.

In this embodiment, s samples are divided into p data blocks, each of which contains q samples, and the q samples are determined as a common index portion, an exponential function, and a mantissa portion, and then mapped into the data block. , can reduce the bit width required for data transmission and improve the efficiency of data transmission. An embodiment of the present invention provides an IQ data transmission apparatus, which can be used to implement the foregoing method embodiment. FIG. 4 is a schematic structural diagram of an IQ data transmission apparatus according to an embodiment of the present invention.

The IQ data transmission device shown in 4 includes:

The splitting module 401 is configured to divide s samples in a single antenna single carrier AxC container block in the IQ data to be transmitted into p data blocks, where each data block includes q samples;

a compression module 402, configured to respectively determine a common exponent portion exp of the q samples in each data block, an exponential function f(exp), and respective mantissa portions; a mapping module 403, configured to respectively map a common exponent portion and a respective mantissa portion of q samples in each data block into corresponding data blocks;

The transmission module 404 is configured to transmit p data blocks through a common public radio interface CPRI frame. In addition, when the split module splits the IQ data to be transmitted, q satisfies the following conditions: When s <= the first preset threshold, or s is a prime number, then q = s.

Or, when s > the first preset threshold, and s is a non-prime number, then q is a factor value of s that is closest to the first preset threshold.

In addition, when mapping the sample into the data block, the mapping module is further configured to: map the common index portion of the q samples in each data block to the mantissa portion according to the mapping pattern, and each of the data blocks The mantissa part of each sample is mapped to the corresponding data block, and the mapping pattern is defaulted by the CPRI sender and the CPRI receiver. Further, the shot pattern may be: The common index portion is located between the first point of the q samples and the mantissa portion of the second sample.

Further, the compression module satisfies the following conditions when determining the common index portion, the exponential function, and the mantissa portion of the sample:

I = I '■ 2 ^{/ (exp)} , Q = '.2 ^{/ (exp)} , where I is the value of the real part of a sample in the sample, and I' is the real part of a sample in the sample In the mantissa part, Q is the value of the imaginary part of one of the samples, and Q' is the mantissa part of the imaginary part of the sample.

When determining the common index part and the mantissa part of the sample, the following conditions are satisfied: When the common index parts of the Q and the common index parts of the Q share the common index part exp, the common index part exp occupies 2N bits, a single sample The bit width Mc satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , L is the mantissa width of each sample or I, and ceil means rounding up.

When the common index of I of q samples is the first common index part, the first common index part occupies N bits, the common index part of Q of q samples is the second common index part, and the second common index part accounts for N When bit is used, the bit width Mc of a single sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , L is the nibble width of I or Q of each sample, and ceil means round up. .

In the above embodiment, the device may further include:

a first determining module, configured to determine, by high layer signaling, one or more of an exponential function f(exp), an exponential function f(exp), q, N, L, or The default module is used for one or more of the default exponential function f(exp), the exponential function f(exp) parameter, q, N, L of both the CPRI sender and the CPRI receiver.

In addition, the device may further include: a CPRI receiving end for receiving the data block, and restoring the IQ data sample according to the common index part, the exponential function and the mantissa part of the sample.

In this embodiment, a plurality of samples are decomposed into a plurality of data blocks, and a plurality of sampling point common index portions and respective mantissa portions are transmitted in units of data blocks, so as to greatly reduce bits occupied by IQ data and improve IQ data. The purpose of transmission efficiency. An embodiment of the present invention provides an IQ data transmission method, and FIG. 5 is a schematic flowchart of an IQ data transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method according to an embodiment of the present invention includes:

S501. The N _SAM samples of a single antenna single carrier symbol block AxC Symbol Blocks in the IQ data to be transmitted are divided into p data blocks, and each data block includes q samples; it is understood that in this implementation In the example, an AxC container block contains N _SYM AxC symbol blocks, and an AxC symbol block contains N _SAM samples, and an AxC symbol block included in an AxC container block is expressed as N _SYM , and an AxC symbol block is included. The number of samples is expressed as N _SAM .

Here, the N _SAM samples are consecutively transmitted IQ data, where I is the real part of each sample and Q is the imaginary part of each sample.

FIG. 6 is a schematic diagram of decomposing s samples in an AxC symbol block according to an embodiment of the present invention. As shown in FIG. 6, an AxC symbol block includes N _SAM samples, and each AxC symbol block is to be transmitted. In the data, N _SAM samples are divided into p data blocks, and each data block contains q samples. It can be understood that: N _SAM satisfies the condition: N _SAM = p*q. Wherein, N _s — _{SYM is} the number of padding bits in one antenna-carrier symbol block, and the stuffing bits are padding bits.

In addition, when the N _SAM samples are divided into p data blocks, the size of q can be determined according to whether N _SAM is a prime number and the size of N _SAM , so that the common index portion and the respective mantissa portions are determined in the subsequent steps. For q samples, the accuracy of the sample is guaranteed, and the bit width of the common exponent portion is limited to a suitable range to ensure the EVM (error vector magnitude) performance of the sample.

In this embodiment, the first threshold may be preset. When the _NSAM value is less than or equal to the first preset threshold, the N _SAM samples are divided into one data block, that is, p=l, q=N _SAM . Or when N _SAM is a prime number, since N _SAM cannot be decomposed into other factors than 1 and N _SAM itself, N _SAM samples can be divided into one data block, ie, =1, and q = NSAMC when N _{If the SAM is} greater than the first preset threshold, and N _{SAM is a} non-primary number, then q is a factor value of the N _SAM that is closest to the first preset threshold.

In order to better illustrate and understand the embodiment, the first threshold value is 8 in this embodiment. When N _{SAM is} less than or equal to 8, the N _SAM samples are divided into one data block, and the number of samples in each data block is q=N _SAM . When N _SAM is a prime number, N _SAM samples are also divided into one data block, and the number of samples in each data block is q=N _SAM . When N _{SAM is} greater than 8, and N _{SAM is} non-prime, q is a factor of N _SAM closest to 8. It can be understood that the value of the first threshold can be determined according to the specific value of the N _SAM . The foregoing description is for better understanding of the embodiment, and does not impose any limitation on the present invention.

S502. Determine a common exponent part exp, an exponential function f(exp), and a respective mantissa part of q samples in each data block.

In this step, the p data blocks formed in the previous step are separately processed, and the common exponential part exp, the exponential function f(exp) part and each sample point of the q samples in each data block are respectively determined. The respective mantissa parts. That is, each of the q samples is expressed and calculated using the common exponent portion exp, the exponential function f(exp), and its own mantissa portion.

γ _ J ^f f (exp)

I satisfy the following condition: ^[Sigma Bu _ ^1, wherein, I 'sample in a sample part of the real mantissa portion, the base-2 exponential function.

_ , , ( ^ex P)

Q can satisfy the following conditions: Second, where Q' is the mantissa part of the imaginary part of one sample and the base of the 2-bit exponential function.

Wherein, I and Q of q samples can share a common exponent part exp, and the common exponent part exp accounts for 2N bits, and the equivalent bit width Mc of each sample satisfies the following condition: M _c = ceil ( ( N+q *L ) /q ) , where L is the mantissa width of each sample or I, and ceil is rounded up.

When the I and Q of the q samples use different common index parts, then the common index of I is the first common index part, the first common index part accounts for N bits, and the Q of the q samples is common. The index portion is the second common index portion, the second common index portion is N bits, and the equivalent bit width Mc of the single sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , L is each The I or Q of the sample point is wide, and ceil means round up.

5503. Map the common index part and the respective mantissa part of the q samples in each data block to the corresponding data block respectively.

In S502, the q samples in each data block are respectively determined by the common index portion, the exponential function, and the mantissa portion, and I and Q of the sample point are determined. In this step, the common index portion corresponding to the q sample points and q are The mantissa part of each sample point is mapped to the corresponding data block according to the mapping pattern. For example, mapping a common index portion of q samples in each data block to a mantissa portion according to a mapping pattern, and mapping a mantissa portion of q samples in each data block to a corresponding data block, the mapping pattern It is defaulted by the CPRI sender and the CPRI receiver.

When mapping samples, the common exponential part of the sample can be mapped between the mantissa parts of the sample according to the mapping pattern, and the mantissa part of the q samples in each data block is mapped into the corresponding data block. For example, when mapping a sample, the common exponent portion can be mapped behind the mantissa portion of the first sample; of course, the common exponent portion can also be mapped to the front of all the mantissa portions, or elsewhere, mapping The pattern is defaulted by the CPRI sender and the CPRI receiver.

5504, transmitting p data blocks by using a common public radio interface CPRI frame;

After the q sample points in each data block are mapped into the data block, the N _SAM sample points in the p data blocks in one AxC symbol block are divided into p data blocks and mapped into the CPRI frame. The CPRI frame transmits p data blocks.

Further, in this embodiment, the method may further include:

S505, the CPRI receiving end receives the data block, and the common index part and the mantissa part of the sample point recover the sample value. It can be understood that the above four steps can be performed by the CPRI transmitting end. After the transmitting end sends the data to the receiving end, the receiving end receives the data, and uses the common index part of the received sample according to the corresponding algorithm when compressing. The exponential function part and the mantissa part calculate the sample value, thereby restoring the sample value. Embodiments of the invention may be used in a WiMax system.

In this embodiment, the N _SAM samples are divided into p data blocks, each of which contains q samples, and the q samples are determined to be a common index part and a mantissa part, and then mapped into the data block, Reduce the bit width required for data transmission and improve the efficiency of data transmission. An embodiment of the present invention provides an IQ data transmission apparatus, which can be used to implement the foregoing method embodiments. FIG. 7 is a schematic structural diagram of an IQ data transmission apparatus according to an embodiment of the present invention, and the IQ data transmission apparatus shown in FIG. 7 includes :

The splitting module 701 is configured to divide N _SAM samples in a single antenna single carrier AxC symbol block in the IQ data to be transmitted into p data blocks, each data block includes q samples; and the compression module 702, a common exponent portion exp, an exponential function f(exp), and respective mantissa portions for respectively determining q samples in p data blocks;

a mapping module 703, configured to respectively map a common exponent portion and a respective mantissa portion of q samples in each data block into corresponding data blocks;

The transmission module 704 is configured to transmit p data blocks by using a universal public radio interface CPRI frame. In addition, when the split module splits the IQ data to be transmitted, q satisfies the following conditions: When N _SAM <= the first preset threshold, or N _SAM is a prime number, then q = N _SAM .

Or, when N _SAM > the first preset threshold, and N _{SAM is a} non-primary number, then the value of q is

The factor value of the NsAM that is closest to the first preset threshold.

In addition, when mapping the sample into the data block, the mapping module is further configured to: map the common index portion of the q samples in each data block to the mantissa portion according to the mapping pattern, and each of the data blocks The mantissa part of each sample is mapped to the corresponding data block, and the mapping pattern is

The CPRI sender and CPRI receiver are default. Further, the shot pattern may be: The common index portion is located between the first point of the q samples and the mantissa portion of the second sample.

I = /' . 2 ^{/ (exp)} Q = g '.2 ^{/ (exp)} where I is the value of the real part of one of the samples, and I' is the real part of the sample in the sample In the mantissa part, Q is the value of the imaginary part of one of the samples, and Q' is the mantissa part of the imaginary part of the sample.

In the above embodiment, the device may further include:

a first determining module, configured to determine, by high layer signaling, one or more of an exponential function f(exp), an exponential function f(exp), q, N, L, or

The default module is used by one or more of the default exponential function f(exp), the exponential function f(exp) parameter, q, N, L of both the CPRI sender and the CPRI receiver.

In this embodiment, a plurality of samples are decomposed into a plurality of data blocks, and a plurality of sampling point common index portions and respective mantissa portions are transmitted in units of data blocks, so as to greatly reduce bits occupied by IQ data and improve IQ data. The purpose of transmission efficiency. It should be noted that the order of the embodiments is only for convenience of description, and is not a basis for comparison between the embodiments.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working processes of the above-mentioned systems, devices, modules and units can refer to the corresponding processes in the foregoing method embodiments, and are not mentioned here. .

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way. Based on such understanding, the present invention Formally embodied, the computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network storage medium including: a USB flash drive, a mobile hard disk, a read only memory ( ROM), random access memory (RAM), disk or optical disk, and other media that can store program code.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners without departing from the scope of the present application. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed. The unit described as the separate component may be a unit or a unit, that is, may be located in one place, or may be distributed to a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

In addition, the described systems, devices, and methods, and the schematic diagrams of various embodiments, may be combined or integrated with other systems, modules, techniques or methods without departing from the scope of the present application. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electronic, mechanical or other form.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

1. An IQ data transmission method, comprising:

The s samples in a single antenna single carrier container block AxC Container Block in the IQ data to be transmitted are divided into p data blocks, and each data block includes q samples;

Determining the common exponent part exp, the exponential function f(exp) and the respective mantissa parts of q samples in each data block;

Mapping the common exponent portion and the respective mantissa portion of q samples in each data block to corresponding data blocks;

The p data blocks are transmitted through a common public radio interface CPRI frame.

2. The method according to claim 1, wherein the q satisfies the following condition: when S <= the first preset threshold, or S is a prime number, then 9 = 8; or

When s > the first preset threshold, and s is a non-prime number, then q is a factor value of s that is closest to the first preset threshold.

The method according to claim 1 or 2, wherein the common index portion and the respective mantissa portion of the q samples in each data block are respectively mapped into corresponding data blocks, including:

Mapping a common index portion of q samples in each data block to a mantissa portion according to a mapping pattern, and mapping a mantissa portion of q samples in each data block to a corresponding data block, wherein the mapping pattern is The CPRI sender and CPRI receiver are default.

4. The method according to claim 3, wherein the mapping pattern is: the common index portion is located between the first point of the q samples and the mantissa portion of the second sample.

The method according to any one of claims 1 to 4, wherein the common index portion, the exponential function and the mantissa portion satisfy the following conditions:

1 = 1 ' - 2 ^(exp) Q = g '.2 ^{/ (exp)} where I is the value of the real part of one of the samples, and I' is a sample of the sample The mantissa portion of the portion, the Q is the value of the imaginary part of one of the samples, and Q' is the mantissa portion of the imaginary part of one of the samples.

The method according to claim 5, wherein the common index portion of I and Q of the q samples is a common index portion exp, and the common index portion exp accounts for 2N bits, the single sample The bit width Mc satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ), the L is the nibble width of I or Q of each sample, and the ceil indicates rounding up. or,

The common index portion of I of the q samples is a first common index portion, the first common index portion occupies N bits, and the common index portion of Q of the q samples is a second common index portion. The second common index portion occupies N bits, and the bit width Mc of the single sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ), and the L is I of each sample The mantissa of Q is wide, and the ceil means rounding up.

The method according to claim 6, further comprising: determining, by higher layer signaling, the exponential function f(exp), the parameter of the exponential function f(exp), q, N, L One or more, or one or more of the exponential function f(exp), the parameter of the exponential function f(exp), q, N, L, by both the CPRI sender and the CPRI receiver.

The method according to claim 6, wherein the method further comprises: receiving, by the CPRI receiving end, the data block by using a CPRI frame, according to the common index part exp, the exponential function f ( The exp) and mantissa sections recover the IQ data samples.

9. An IQ data transmission device, comprising:

a splitting module, configured to divide s samples in a single antenna single carrier AxC container block in the IQ data to be transmitted into p data blocks, each of which includes q samples;

a compression module, configured to respectively determine a common exponent portion exp, an exponential function f(exp), and respective mantissa portions of q samples in each data block;

a mapping module, configured to respectively map a common exponent portion and a respective mantissa portion of q samples in each data block into corresponding data blocks;

And a transmission module, configured to transmit the p data blocks by using a universal public radio interface CPRI frame.

The device according to claim 9, wherein when the splitting module splits the IQ data to be transmitted, the q satisfies the following conditions:

When s <= the first preset threshold, or s is a prime number, then 9 = 8, or

When 8 > the first preset threshold, and s is a non-prime number, then q takes a value of s which is the factor value closest to the first preset threshold.

The device according to claim 9 or 10, wherein the mapping module is configured to: map a common index portion of q samples in each data block to a mantissa portion according to a mapping pattern, and The mantissa portion of the q samples in each data block is mapped into a corresponding data block, and the mapping pattern is defaulted by the CPRI transmitting end and the CPRI receiving end.

12. The apparatus according to claim 11, wherein the mapping pattern is: The common index portion is located between the first point of the q samples and the mantissa portion of the second sample.

The apparatus according to any one of claims 9 to 12, wherein the common index portion, the exponential function, and the mantissa portion satisfy the following conditions:

Wherein, I is a value of a real part of one of the samples, I' is a mantissa part of a real part of the sample, and Q is an imaginary part of the sample The value of Q' is the mantissa part of the imaginary part of one of the samples.

14. The apparatus according to claim 13, wherein the compression module is further configured to: when determining a common index portion and a mantissa portion of the sample, satisfying the following conditions:

The common index portion of I and Q of the q samples shares the exponent exp, the common exponent portion exp accounts for 2N bits, and the bit width Mc of the single sample satisfies the following condition: M _c = ceil ( ( N+ q*L ) /q ) , the L is the nibble width of I or Q of each sample, and the ceil indicates rounding up.

Or,

a common index of I of the q samples is a first common index portion, the first common index portion occupies N bits, and a common index portion of Q of the q samples is a second common index portion, The second common index portion occupies N bits, and the bit width Mc of the single sample satisfies the following condition: M _c = ceil ( ( N+q*L ) /q ) , and the L is I or Q of each sample The mantissa is wide, and the ceil is rounded up.

The device according to claim 14, further comprising:

a first determining module, configured to determine, by high layer signaling, the exponential function f(exp), the parameter of the index function f(exp), one or more of q, N, L, or

The default module is used by the CPRI sender and the CPRI receiver to default one or more of the exponential function f(exp), the exponential function f(exp), q, N, L.

The device according to claim 15, wherein the device further comprises: a CPRI receiving end, configured to receive the data block, and recover the according to a common index part, an exponential function and a mantissa part of the sample point IQ data samples.