CN101355408A - Data transmission processing method and transmission processing device - Google Patents

Abstract

The present invention provides a data transmission processing method and a transmission processing device, wherein a data transmission processing method includes the following steps: encoding a data packet to generate an encoding block; interleaving the encoding block; and modulating the interleaved encoding block ; Judging whether the data packet corresponding to the modulated coded block is the first Nth transmission, if not, transfer the modulated coded block using space diversity, where N is an integer not less than 1. The embodiments of the present invention comprehensively adopt the SM and SD modes to transmit data packets. When transmitting the data packets for the first N times, the SM mode is used for transmission, so that terminals with better received signal quality can quickly and correctly receive the data packets to save power. Retransmitting the data packet in the SD mode after the Nth time is beneficial to being correctly received by the terminal with a poor channel environment, reducing the number of times it repeatedly receives the data packet, so as to achieve a balance between high spectral efficiency, high transmission efficiency and transmission quality .

Description

Data transmission processing method and transmission processing device

technical field

The invention relates to broadcast multicast communication technology, in particular to a data transmission processing method and a transmission processing device.

Background technique

接收机采用N_R个接收天线接收数据发射端传输过来的数据并进行空间-时间译码。根据发射机与接收机之间信道质量的不同，可以选择采用SD或SM的方式传输数据。在信道质量较差时，可以采用SD中的空时分组码(Space-timeblock codes，以下简称：STBC)或空频分组码(Space-frequency block codes，以下简称：SFBC)等空间编码方式来提高接收机接收到的数据的信干比(signal to interference-plus-noise ratio，以下简称：SINR)，从而提高接收信号的质量。With the rapid development of wireless communication technology, the serious shortage of spectrum resources has increasingly become the "bottleneck" of the development of wireless communication. How to fully develop and utilize limited spectrum resources and improve spectrum utilization is one of the hot topics in the current communication industry. . Multi-antenna technology is widely favored because it can improve air interface transmission efficiency and spectrum utilization without increasing bandwidth. In mainstream wireless communication standards such as Code Division Multiple Access (CDMA) 2000, Wideband CDMA (WCDMA), 802.16e, etc., multi-antenna technology is introduced to improve air interface transmission. efficiency. Existing multi-antenna technologies include spatial multiplexing (Spatial Multiplex, hereinafter referred to as SM) and spatial diversity (Spatial Diversity, hereinafter referred to as SD) in two manners. As shown in Figure 1, it is a schematic structural diagram of a multi-antenna transmission system using multi-antenna technology in the prior art, and the transmitter uses _NT transmitting antennas to simultaneously transmit space-time coded data

The receiver uses _NR receiving antennas to receive the data transmitted from the data transmitter and perform space-time decoding. Depending on the quality of the channel between the transmitter and the receiver, SD or SM can be selected to transmit data. When the channel quality is poor, space-time block codes (Space-time block codes, hereinafter referred to as: STBC) or space-frequency block codes (Space-frequency block codes, hereinafter referred to as: SFBC) and other spatial coding methods in SD can be used to improve Signal to interference-plus-noise ratio (SINR for short) of the data received by the receiver, so as to improve the quality of the received signal.

The fundamental difference between STBC and SFBC lies in their different applicable conditions. The applicable condition of STBC is that the channel environment between the transmitting and receiving antennas does not change or changes slightly at two adjacent moments, while the applicable condition of STBC is that the transmitting and receiving antennas The channel environment between two receiving antennas does not change or changes slightly between two adjacent carriers. Therefore, when the terminal is in a high-rise urban environment, due to the complex and rich multipath, the channel conditions between adjacent carriers change drastically, it is more appropriate to use the STBC method rather than the SFBC method; when the terminal is in a high-speed mobile environment, for example: On a vehicle moving on the expressway, the SFBC method should be used rather than the STBC method because the channel conditions change sharply between adjacent moments.

Taking 2 antennas for transmission and 1 antenna for reception as an example, the implementation scheme of diversity transmission using Alamouti space-time coding method is as follows: Assume that the data transmitted by the first transmitting antenna at two adjacent time points (or carriers) is x ₁ , x ₂ ; Assume that the data sent by the second transmitting antenna at two adjacent moments (or two adjacent carriers) is -x ₂ ^* , -x ₁ ^* , where ( ) ^* represents the conjugate. Then the data received by the first antenna at two consecutive moments or two subcarriers can be expressed as: r ₁ =h ₁ x ₁ +h ₂ x ₂ +n ₁ , r ₂ =-h ₁ -x ₂ +h ₂ x ₁ ^* +n ₂ , where n ₁ and n ₂ are Gaussian white noise, h ₁ and h ₂ represent the channel responses from the two transmitting antennas to the receiving antenna respectively. The estimated values of x ₁ and x ₂ can be obtained after space-time decoding of the received signal using the Alamouti space-time coding method: ${\tilde{x}}_1=({\left|{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">h</figure-callout>}}_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2)x_1+{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{*}{\mathrm{<figure-callout\; id="1"\; label="no"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">no</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">h</figure-callout>}}_2{\mathrm{<figure-callout\; id="2"\; label="no"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">no</figure-callout>}}_2^{*},$ ${\tilde{x}}_2=({\left|{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">h</figure-callout>}}_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2)x_2-{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">h</figure-callout>}}_1{\mathrm{<figure-callout\; id="2"\; label="no"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">no</figure-callout>}}_2^{*}+{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="A20071013751700301.png,A20071013751700302.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}{\mathrm{<figure-callout\; id="1"\; label="no"\; filenames="A20071013751700282.png"\; state="\{\{state\}\}">no</figure-callout>}}_1.$

It can be seen that, in the above spatial coding method, at two different times (or carriers), the same signal or its combination is transmitted on the two antennas, and the quality of the received signal can be improved by adopting the diversity method and the maximum ratio combination. Therefore, the SD method does not improve the transmission efficiency of the air interface in essence, but only improves the reliability of the received signal.

When the channel quality between the transmitter and the receiver is good, the SM method can be used to improve the transmission efficiency of the air interface. At this time, different signals are transmitted on different antennas at different times, and the receiver adopts the minimum mean square error (Minimum Mean Square Error, hereinafter referred to as: MMSE) algorithm and iterative serial interference cancellation (Successive Interference Cancellation, hereinafter referred to as: SIC) technology or Parallel Interference Cancellation (Parallel Interference Cancellation, PIC for short) technology for reception, but the number of receiving antennas NR is required to be greater than or equal to the number _NT of transmitting antennas. According to different implementation methods, SM has two different implementation methods: Single Codeword (Single Codeword, hereinafter referred to as SCW) and Multiple Codeword (Multiple Codeword, hereinafter referred to as MCW).

Therefore, before the transmitter transmits data, it can choose to use SM or SD to transmit data according to the quality of the channel between the transmitter and the receiver. When the channel condition is good, use SCW or MCW SM to transmit data. Improve transmission efficiency; when channel conditions are not good enough, use SFBC or STBC under SD to transmit data to effectively improve transmission quality.

With the development of digital TV broadcasting technology and its application in the field of mobile communication, mobile video broadcasting came into being. Mobile video broadcasting combines the characteristics of digital TV and mobile communication, meets the needs of users to receive TV services anytime and anywhere, and has great potential for development. In order to meet the growing demand for broadcast services, the 3rd Generation Partnership Project (3rd Generation Partnership Project, hereinafter referred to as: 3GPP) standard introduced the multicast and broadcast service (Multicast Broadcast Multicast Service, hereinafter referred to as: MBMS) services, and the 3GPP 2 standard launched In addition to the enhanced broadcast/multicast (EnhancedBroadcast Multicast, hereinafter referred to as: EBM) service, the WiMaX 16e standard introduced the multicast/broadcast service (Multicast Broadcast Service, hereinafter referred to as: MBS), which provides users with broadcast /multicast service.

In the broadcast multicast technology, the single frequency network (Single Frequency Network, hereinafter referred to as: SFN) technology is adopted, all cells send the same signal at the same time and frequency, and the terminal processes different signals as multipath signals . If the scale of the SFN is large enough, for example: more than 50 cells form a SFN, and the system design is reasonable, the signals between different cells can be mutually enhanced, thereby improving the SINR received by the terminal, improving the receiving performance and effective coverage of most terminals scope.

According to the Long Term Evolution (hereinafter referred to as: LTE) standard, when the scale of the SFN is large enough, for example: more than 50 cells form an SFN, the energy of broadcast and multicast signals in most areas of the SFN is strong enough, and can be used Data is sent in SM mode, so that the transmission efficiency of the air interface can be effectively improved while ensuring the signal reception quality of most terminals. When using the SM mode to transmit data, it is required that the number of receiving antennas be greater than or equal to the number of transmitting antennas. In the traditional broadcast multicast technology, due to the influence of terminal hardware processing capabilities and cost factors, the system adopts Single Input Multiple Output (hereinafter referred to as SISO) or Multiple Input Single Output (hereinafter referred to as : MISO) technology, that is, all terminals use one antenna to receive data. With the improvement of hardware processing capability and the reduction of cost, it becomes a basic configuration for a terminal to use multiple antennas for reception. For example: in the LTE standard of WCDMA and the evolution standard 802.16m of WiMaX 16e, it has become a basic configuration for a terminal to receive data with two antennas. However, how to use the SFN technology to transmit data to a multi-antenna terminal has not been mentioned in the prior art.

Time-slicing (Time-Slice) technology is based on the purpose of power saving, which can split the data stream of a program into multiple packets and send them in a time-division manner. To save power. Taking the interval between two data packets as 1s as an example, if the rate of the program is 360kbps, the data that can be received in 1s is 360kb, and when the air interface adopts a higher transmission rate, for example: 2Mbps, the data of 360kbps can be transmitted in dozens The transmission is completed within milliseconds, so that the radio frequency circuit can be turned off in the remaining time of 1s, so as to achieve the goal of power saving. As shown in FIG. 2 , it is a schematic diagram of the implementation principle of Time-Slice in the prior art. In Fig. 2, data packet 1, data packet 2, and data packet 3 transmit independent information, and adopt independent coding and modulation methods. Higher rate transmissions correspond to higher coding rates and modulation methods. In order to avoid the degradation of data reception quality caused by terminals with poor reception conditions caused by higher rate transmissions, the existing technology inserts some data packets between two independent data packets. Sub-packets, such as: data packet 1.1, data packet 1.2, etc., terminals with poor reception conditions will combine the sub-packets with the received independent data packets, such as: Chase Combing (hereinafter referred to as: CC), adding Increment Redundancy (Increment Redundancy, hereinafter referred to as: IR), etc., to improve the receiving quality of data packets.

At present, in order to improve the quality of signals received by the terminal, an important research direction in the broadcast multicast technology is to combine different signals transmitted by different cells at the terminal for diversity combining. As shown in Figure 3, a data packet is encoded by an encoding module, such as a Turbo code encoding module, a convolutional code encoding module, etc., to generate two parts of the signal, the information part and the redundancy check part, as shown in Figure 3, which is Schematic diagram of the data structure of the encoded signal in the prior art. The ratio of the information bits to the length of the encoded data packet is called the encoding rate, and the commonly used encoding rates are generally 1/3, 2/3, 1/2, etc. As shown in FIG. 4 , it is a principle diagram of a multi-cell redundancy check combination scheme in the prior art. Through the encoding of the encoding module, the data packet is generated into the information bits and redundant check bits as shown in Figure 3. Taking the 2/3 encoding rate as an example, the redundant check part is divided into two parts: redundant check bits 1 and redundancy check bits 2, send the same information bits and different redundancy check bits in different cells, that is: send information bits and redundancy check bits 1 in the first cell, and send information in the second cell Bits and redundancy check bits 2, the coding rate of data received by the user at the center of the cell is 2/3, and the users at the edge of the two cells receive the same information bits and different redundancy check bits and combine them The data encoding rate is 1/2. It can be seen that although the signal quality received by the users at the edge of the cell is poor, the coding rate of the signal received by the terminal is reduced through the above combination method, thereby improving the quality of the signal received by the terminal and improving the reception performance of the broadcast multicast service . However, the above multi-cell redundancy check combination scheme is based on the fact that the terminal can only use one antenna to receive data. Therefore, different redundancy check bits transmitted in different cells occupy different time-frequency resource blocks. Compared with the traditional SFN technology , the time-frequency resources occupied when transmitting redundancy check data bits are greatly increased, at least twice that of traditional SFN, which reduces the throughput of broadcast and multicast service transmission.

In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art:

1. The existing mobile communication technology provides a reference basis for selecting a single SD mode or SM mode to deliver data to the terminal according to the channel quality between the base station and the terminal. According to this basis, in the broadcast multicast system, when the SFN scale When it is larger, the SM mode is used to broadcast data. However, when the scale of the SFN is large, the receiving environment of different terminals under the SFN may vary widely. For terminals with poor receiving environment quality, it is impossible to correctly receive the data sent by the base station in SM mode;

2. In the mobile communication system, the SFBC method or STBC method in SD is only used to deliver data to the terminal, without considering the difference in the environment of the terminal in the broadcast multicast system. The single use of a single SFBC method or STBC method may cause the terminal The data sent by the base station in SM mode cannot be received correctly;

3. In the multi-cell redundancy check combination scheme, the terminal only uses one antenna to receive data, and takes up too much time-frequency resources when transmitting redundant check data bits, which reduces the throughput of broadcast and multicast service transmission and the air interface resources. Transmission efficiency, without considering the use of SFN technology to transmit data to multi-antenna terminals to improve air interface transmission efficiency.

Contents of the invention

The technical problem to be solved by the embodiments of the present invention is to provide a multi-antenna technology applicable to a broadcast multicast system, so as to achieve a balance between data transmission reliability and transmission efficiency.

Embodiments of the present invention provide a data transmission processing method, including the following steps:

Encode the data packet to generate an encoding block;

Interleave the encoded blocks;

Constellation mapping is performed on the interleaved coding block;

Judging whether the data packet corresponding to the modulated coding block is the first Nth transmission, wherein N is an integer not less than 1; if so, transmitting the modulated coding block in a spatial multiplexing manner; if not, The modulated coded block is transmitted in a space diversity manner.

Embodiments of the present invention also provide a data transmission processing device, including:

A first encoding module, configured to encode the data packet to generate an encoding block;

an interleaving module, configured to interleave the coded block;

a modulation module, configured to perform constellation mapping on the interleaved coding block;

A recording module, configured to record the number of transmissions of the data packet;

The judging module is used to judge whether the data packet corresponding to the modulated coding block is the first Nth transmission according to the recorded transmission times information of the data packet, wherein N is an integer not less than 1;

A space diversity processing module, configured to transmit the modulated coded block in a space diversity manner when the data packet corresponding to the modulated coded block is not transmitted for the first N times;

The spatial multiplexing processing module is configured to transmit the modulated coded block in a spatial multiplexing manner when the data packet corresponding to the modulated coded block is transmitted for the first N times.

In the embodiment of the present invention, when transmitting the data packet for the first N times, the SM mode is used for transmission, so that the terminal with better received signal quality can quickly and correctly receive the data packet, and turn off the radio frequency circuit in the next time, thereby To achieve the purpose of saving power; and retransmit the data packet in SD mode after the Nth time, which is conducive to being correctly received by terminals with poor channel environment, reducing the number of times it repeatedly receives data packets, and adopting SM and SD mode for transmission The data packet not only provides diversity gain but also can improve system capacity, thereby achieving a balance between high spectrum efficiency, high transmission efficiency and transmission quality.

Embodiments of the present invention provide a data transmission processing method, including the following steps:

Encode the data packet to generate an encoding block;

Interleave the encoded blocks;

Constellation mapping is performed on the interleaved coding block;

Alternately using space-time block codes and space-frequency block codes to transmit the encoded blocks of multiple retransmission data packets of the same data packet after modulation; or alternately using space-time block codes and space-frequency block codes to transmit different data packets The coded block after modulation.

In this embodiment, the SFBC and STBC spatial coding methods are used to transmit data at intervals, which can ensure that user terminals in different environments can receive data correctly, and improve the reliability of data transmission.

Embodiments of the present invention provide a data transmission processing method, including the following steps:

Encoding the data packet to generate an encoding block including information bits and redundant check bits;

performing serial-to-parallel conversion on the coded block comprising information bits and redundant check bits to generate an coded block of information bits and a coded block of redundant check bits;

respectively interleaving the information bit coding block and the redundancy check bit coding block;

Constellation mapping is performed on the interleaved information bit coding block and the redundant check bit coding block respectively;

Encoding the modulated information bit encoding block in a space diversity manner, and encoding the modulated redundancy check bit encoding block in a spatial multiplexing manner;

The information bit coding block coded in the space diversity mode and the redundancy check bit coding block coded in the space multiplexing mode are transmitted.

Embodiments of the present invention also provide a data transmission processing device, including:

The second encoding module is used to encode the data packet to generate an encoding block including information bits and redundant check bits;

A serial-to-parallel conversion module, configured to perform serial-to-parallel conversion on the coded blocks including information bits and redundant check bits, to generate information bit coded blocks and redundant check bit coded blocks;

An interleaving module, configured to interleave the information bit coding block and the redundant check bit coding block;

A modulation module, configured to perform constellation mapping on the interleaved information bit encoding block and redundant check bit encoding block;

A space diversity encoding module, configured to encode the modulated information bit encoding block in a space diversity manner;

A spatial multiplexing encoding module, configured to encode the modulated redundant check bit encoding block in a spatial multiplexing manner;

A transmission module, configured to transmit the information bit coded block coded in a space diversity manner and the redundancy check bit coded block coded in a space multiplexing manner.

The embodiment of the present invention transmits the information bit part in the SD mode, which can effectively ensure the correctness and reliability of the information bit part, and adopts the SM mode to transmit the redundant check bit part, which can improve the transmission efficiency of the data, thereby realizing the reliability and reliability of the transmission. The balance between transmission efficiency.

Embodiments of the present invention provide a data transmission processing method, including the following steps:

classifying the cells within the single frequency network into types with the same number of antennas as the terminal having the minimum number of antennas within the single frequency network;

Encoding the data packet to generate information bits and redundant check bits;

dividing the redundant check bit part into a plurality of redundant check bit parts;

generating a plurality of coding blocks by combining the information bit part with the plurality of redundant check bit parts;

performing interleaving on the plurality of coding blocks respectively;

performing constellation mapping on the plurality of interleaved coding blocks respectively;

performing orthogonal frequency division multiplexing (OFDM) subcarrier mapping on the modulated coded blocks, mapping the modulated coded blocks to the same time-frequency resource, and mapping them to the same Multiple different coding blocks on time-frequency resources.

Embodiments of the present invention also provide a data transmission processing device, including:

A partitioning module, configured to divide the cells in the single frequency network into multiple types with the same number of antennas as the terminal with the minimum number of antennas in the single frequency network;

The second encoding module is used to encode the data packet to generate an encoding block including information bits and redundant check bits;

An allocating module, configured to divide the redundant check bit part into the plurality of redundant check bit parts;

A generating module, configured to combine the information bit part with the plurality of redundant check bit parts to generate a plurality of coded blocks;

an interleaving module, configured to interleave the plurality of coded blocks respectively;

A modulation module, configured to perform constellation mapping on the plurality of interleaved coding blocks respectively;

A mapping module, configured to perform OFDM subcarrier mapping on the modulated multiple encoded blocks, and map the modulated multiple encoded blocks to the same time-frequency resource; a transmission processing module, configured to Multiple coding blocks having the same information bits and different redundancy check bits are respectively transmitted in the multiple types of cells.

For multi-antenna terminals, the embodiment of the present invention maps multiple coding blocks composed of the same information bit part and different redundancy check bit parts to the same time-frequency resource block for transmission, and needs to occupy different time-frequency resource blocks from the prior art In comparison, time-frequency resources are saved, and the data throughput and transmission efficiency of the system are improved; moreover, the terminal at the edge of the cell can combine multiple coding blocks for redundancy checks, thereby improving the receiving quality of data information, thereby realizing The balance between transmission reliability and transmission efficiency.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

FIG. 1 is a schematic structural diagram of a multi-antenna transmission system using a multi-antenna technology in the prior art.

Fig. 2 is a schematic diagram of the implementation principle of Time-Slice in the prior art.

FIG. 3 is a schematic diagram of data structure of a coded signal in the prior art.

FIG. 4 is a schematic diagram of a multi-cell redundancy check combination scheme in the prior art.

FIG. 5 is a flow chart of Embodiment 1 of the data transmission processing method of the present invention.

Fig. 6 is a schematic diagram of an embodiment of a data block transmitted in the "Step Down" mode of the present invention.

FIG. 7 is a schematic diagram of Embodiment 1 of a data block transmitted in a combined manner of SFBC and STBC according to the present invention.

FIG. 8 is a schematic diagram of Embodiment 2 of a data block transmitted in a combined manner of SFBC and STBC according to the present invention.

FIG. 9 is a schematic structural diagram of Embodiment 1 of the data transmission processing device of the present invention.

FIG. 10 is a flow chart of Embodiment 2 of the data transmission processing method of the present invention.

FIG. 11 is a schematic diagram of time-frequency resource mapping of information bits and redundant parity bits in the present invention.

FIG. 12 is a schematic structural diagram of Embodiment 2 of the data transmission processing device of the present invention.

FIG. 13 is a flow chart of Embodiment 3 of the data transmission processing method of the present invention.

Fig. 14 is a schematic diagram of an encoding block of information bits and redundancy check bits transmitted in a single frequency network according to the present invention.

FIG. 15 is a schematic structural diagram of Embodiment 3 of the data transmission processing device of the present invention.

FIG. 16 is a schematic structural diagram of Embodiment 4 of the data transmission processing device of the present invention.

FIG. 17 is a flow chart of Embodiment 4 of the data transmission processing method of the present invention.

Detailed ways

The embodiments of the present invention comprehensively adopt SM and SD modes to transmit data packets, or map multiple coded blocks composed of the same information bit part and different redundant check bit parts to the same time-frequency resource block for transmission to the terminal, improving The data throughput and transmission efficiency of the system are improved; moreover, the terminal at the edge of the cell can combine multiple coding blocks for redundancy checks, thereby improving the reception quality of data information and the transmission efficiency of the system, and realizing transmission reliability and transmission efficiency balance between.

As shown in FIG. 5, it is a flow chart of Embodiment 1 of the data transmission processing method of the present invention. This embodiment includes the following steps:

Step 101, encode the data packet to generate an encoding block.

Step 102, perform interleaving on the encoded data packet encoding block.

Step 103, performing constellation mapping on the interleaved coding block.

Step 104, judging whether the data packet corresponding to the modulated coding block is the first Nth transmission, that is: whether the data packet is the original data packet transmitted for the first time, or the N-1th retransmission data packet of the original data packet, If it is not the data packet transmitted in the previous N times, execute step 105; if it is the data packet transmitted in the previous N times, execute step 106. Wherein, N is preset and is an integer not less than 1. When the value of N is 1, the data packet is the original data packet transmitted for the first time.

Step 105, transmit the modulated coded block in SD mode.

Step 106, transmit the modulated coded block in SM mode. Wherein, the SM manner may specifically be a space-time encoding manner, or may be a space-frequency encoding manner.

Specifically, during transmission, it is necessary to map coded blocks coded in SD or SM mode to time-frequency resource blocks, and perform OFDM subcarrier mapping, and map each coded block to each OFDM subcarrier segment for transmission.

When a multicast broadcast service is provided in a broadcast-multicast communication system, one data packet can be transmitted multiple times. When the scale of the SFN is large enough, for example: one SFN covers an urban area, and the data is sent in SM mode, the terminal with better received signal quality can quickly and correctly receive the data packet, even when sending the data packet for the first time. Can be received correctly, so that the radio frequency circuit will be turned off in the next time, so as to achieve the purpose of power saving. Due to the large scale of the SFN, the receiving environment of the terminal under the SFN varies greatly, and there are always some terminals with poor receiving environment quality. If the data signal sent by the base station cannot be correctly received and recognized during the first transmission or the first N times, Then the base station must retransmit the data multiple times. Since the channel quality between the terminal and the base station is required for SM reception, if the base station always uses SM to repeatedly transmit the same data packet, there will still be some terminals that cannot receive the data correctly, or need to receive multiple data packets before they can be correctly demodulated. Therefore, in the embodiment of the present invention, the SM mode is used for the first few retransmitted data packets, and the SD mode is used for the last few retransmitted data packets. This transmission mode can be called the "Step Down" mode of space transmission. As shown in Figure 6, it is a schematic diagram of an embodiment of a data block transmitted in the "Step Down" mode of the present invention, wherein, in the sending and retransmission data packets of data block 1 and data block 2, the data packet transmitted for the first time adopts SM SD mode is used for the second, third and fourth transmission of data packets, 16-quadrature amplitude modulation (Quadrature Amplitude Modulation, hereinafter referred to as: 16QAM) modulation method is used for the first transmission of data packets, and the rest The QPSK modulation method is adopted. In addition, when the scale of the SFN is large enough, the SM method can be used to transmit data by default, and when the number of retransmissions of the data packet reaches N times, the SD method can be used to send the data packet to the terminal. For a user terminal with a poor channel environment, the data packet sent by the base station for the Nth time cannot be correctly demodulated, and the retransmitted data packet can continue to be received later. For the same retransmitted data packet, the CC method or the IR combination method may be used. To improve the receiving quality and receive retransmission data more reliably, thereby reducing the number of retransmission data packets that these terminals need to receive. Retransmitting the data packet in the SD mode after the N times is beneficial to being correctly received by the terminal with a poor channel environment and reducing the number of times it receives the data packet repeatedly. Since the data packet is transmitted in combination with the SM and SD modes, it provides both The diversity gain can increase the system capacity, thereby achieving a balance between high spectral efficiency, high transmission efficiency and transmission quality.

In step 103 of the above-mentioned embodiment, the modulation of the coded block after interleaving is specifically: judging whether the data packet is the first Nth transmission, and if so, using a coding rate not lower than a preset value to code the coded block after interleaving to modulate. For example: carry out quadrature phase shift keying modulation (Quarter Phase Shift Keying, hereinafter referred to as: QPSK) to the coded block after interleaving with the coding rate of 2/3; if not, then adopt the coding lower than the preset value The coded block after interleaving is modulated at a rate. For example: performing amplitude modulation on the interleaved coding block at a coding rate of 1/2. The modulation mode between retransmitted data packets can be gradually lowered from 16QAM to QPSK.

Since terminals in different channel environments are suitable for different spatial coding methods in SD, for example, user terminals in complex high-rise environments in urban areas are more suitable for STBC transmission, while user terminals under high-speed mobility are more suitable for SFBC transmission. When the scale of the SFN is large enough, the environment of different user terminals in the same SFN is very different, and there are user terminals suitable for data transmission in the SFBC and STBC modes. At this time, if only one method is used to send data, some user terminals may not be able to receive it correctly. Therefore, in step 105 of the above embodiment, the SFBC and STBC spatial coding methods may be used to transmit data at intervals, so as to ensure that user terminals in different environments can receive satisfactory services. Specifically, SFBC and STBC methods can be alternately used to transmit the coded blocks of the modulated data packets, for example: the data packets transmitted for the first M times, or the first M-1 retransmitted data packets of the same data packet adopt the STBC method, The data packets transmitted for the last L times adopt the SFBC method, wherein M and L are integers greater than 1, and L and M may be equal or different. As shown in FIG. 7 , it is a schematic diagram of Embodiment 1 of the data block transmitted in the combination mode of SFBC and STBC in the present invention, wherein, in the sending and retransmission data packets of data block 1 and data block 2, the first and second transmission The data packets of the first transmission adopt the STBC method, the third and fourth transmission data packets adopt the SFBC method, the first transmission data packets adopt the 16QAM modulation method, and the rest adopt the QPSK modulation method. In addition, the SFBC and STBC modes can also be used alternately to transmit coded blocks modulated by different data packets in a similar manner. As shown in Figure 8, it is a schematic diagram of the second embodiment of the data block transmitted by the combination of SFBC and STBC in the present invention, wherein the first data packet adopts the SFBC method, the second data packet adopts the STBC method, and the first data packet of the two data packets adopts the STBC method. 1 transmission adopts 16QAM modulation mode, and the rest adopts QPSK modulation mode. Which SD mode is dominant can be determined according to the type of user terminals in the SFN or cell. If the terminals suitable for SFBC in a SFN or cell are dominant, the number of SFBC retransmission packets is also in the majority. Preset the SFN or the corresponding relationship between most terminal types in the SFN, data packet sequence numbers or retransmission packet sequence numbers of data packets, and the spatial encoding method in SD, and then according to the data packet sequence number or retransmission packet sequence number of the current encoding block, Combining with the stored correspondence information, the spatial coding mode that should be adopted for the current coding block can be determined, and the coding block is transmitted using the determined spatial coding mode.

The data packet in the embodiment shown in Figure 5 can be multiple retransmission data packets of the same data packet, and the retransmission data packets retransmitted with different retransmission times can contain the same information bits, the same or different redundancy checks bit.

For the data packets retransmitted multiple times, when performing constellation mapping on them in step 103, as the number of retransmissions increases, they can be modulated by decreasing modulation from high order to low order, for example: using 16QAM, QPSK respectively 1. Binary Phase Shift Key (Binary Phase Shift Key, hereinafter referred to as: BPSK) performs constellation mapping modulation on the first, second, and third retransmitted data packets.

As shown in Figure 9, it is a schematic structural diagram of Embodiment 1 of the data transmission and processing device of the present invention. The data transmission and processing device of this embodiment can be used to implement the flow of the embodiment of the data transmission and processing method shown in Figure 5 above, which includes The first coding module, the interleaving module, the modulating module, the judging module, the SD processing module and the recording module are sequentially connected, and the SM processing module is respectively connected with the SD processing module and the recording module. Wherein, the first encoding module is used to encode data packets to generate coded blocks; the interleaving module is used to interleave the coded blocks; the modulation module is used to perform constellation mapping on interleaved coded blocks; the judging module is used to The number of transmission times information of the data packet, judge whether the data packet corresponding to the coded block after modulation is the first Nth transmission, wherein, N is an integer not less than 1; the SD processing module is used for the data corresponding to the coded block after modulation When the packet is not transmitted for the first N times, the modulated coded block is transmitted in SD mode. In addition, the SD processing module can also determine the SFBC or STDC that should be used for the current encoding block according to the preset SFN or the corresponding relationship between the majority of terminal types in the SFN, the sequence number of the data packet or the sequence number of the retransmission packet of the data packet and the SD mode. mode, and use the determined SD mode to transmit the encoded block; the SM processing module is used to transmit the modulated encoded block in the SM mode when the data packet corresponding to the modulated encoded block is transmitted for the first N times; the recording module uses When the SD processing module and the SM processing module send the data packet encoding block, the transmission times of the data packet are recorded, so that the judgment module can refer to and determine the transmission times of the next data packet.

In addition, corresponding to the embodiment shown in Figure 5, the first storage module can be set in the embodiment shown in Figure 9, which is connected with the recording module and the judgment module respectively, for storing the number of transmissions of the recorded data packets, and the judgment module According to the number of transmission times information of the data packet stored in the first storage module, it is judged whether the data packet corresponding to the modulated coding block is the first Nth transmission.

Referring to Fig. 9 again, further, the data transmission processing device of the present invention may also include a second storage module connected to the SD processing module for storing the pre-set SFN or most terminal types, data packet serial numbers or data in the SFN The corresponding relationship between the retransmission packet sequence number of the packet and the SD mode; the SD processing module determines the diversity mode of the current coding block by the data packet sequence number or the retransmission packet sequence number of the current coding block according to the corresponding relationship information, and adopts the determined diversity mode. way to transmit the encoded block.

As shown in FIG. 10, it is a flow chart of Embodiment 2 of the data transmission processing method of the present invention. This embodiment includes the following steps:

Step 201: Encode the data packet to generate an encoded block including information bits and redundancy check bits.

Step 202, perform serial-to-parallel conversion on the coded block including the information bits and the redundant check bits, and generate the coded blocks of the information bits and the coded blocks of the redundant check bits.

Step 203: Interleave the information bit coded block and the redundancy check bit coded block respectively.

Step 204, performing constellation mapping on the interleaved information bit coded block and redundant check bit coded block respectively.

In step 205, since the information bits are the most important, the modulated information bit coding block is coded in SD mode, and the modulated redundancy check bit coding block is coded in SM mode.

Using SD mode to transmit the information bit part can effectively guarantee the correctness of the information bit part and the reliability of transmission; adopting SM mode to transmit the redundancy check part can improve the data transmission efficiency. Thereby achieving a balance between transmission reliability and transmission efficiency.

In addition, the information bits and some of the redundancy check bits may be transmitted in SD mode, and the other part of bits may be transmitted in SM mode.

Step 206, transmitting the information bit coded block coded in SD mode and the redundancy check bit coded block coded in SM mode. Time division multiplexing, frequency division multiplexing, or time-frequency division multiplexing can be used to transmit the information bit coding block coded in the SD mode and the redundancy check bit code block coded in the SM mode. Specifically, the information bit coding blocks encoded in the SD mode and the redundant check bit coding blocks encoded in the SM mode are mapped to the time-frequency resource blocks, and Orthogonal Frequency Division Multiplexing (OFDM) is performed. ) subcarrier mapping, mapping each coding block to each OFDM subcarrier segment for transmission. As shown in FIG. 11 , it is a schematic diagram of time-frequency resource mapping of information bits and redundancy check bits in the present invention. Among them, Fig. 11-1 is the format of the data packet adopting the time division multiplexing mode, 11-2 is the format of the data packet adopting the frequency division multiplexing mode, and 11-3 is the format of the data packet adopting the time frequency division multiplexing mode .

As shown in Figure 12, it is a schematic structural diagram of Embodiment 2 of the data transmission and processing device of the present invention. The data transmission and processing device of this embodiment can be used to implement the flow of the embodiment of the data transmission and processing method shown in Figure 10 above, which includes The second coding module, the serial-to-parallel conversion module, the interleaving module, the modulation module and the SD coding module connected in sequence, the SM coding module connected with the modulation module, and the transmission module respectively connected with the SD coding module and the SM coding module. Wherein, the second encoding module is used to encode the data packet to generate a coded block including information bits and redundant check bits; the serial-to-parallel conversion module is used to perform serial-to-parallel conversion on the coded blocks including information bits and redundant check bits , to generate information bit coded blocks and redundant check bit coded blocks; the interleaving module is used to interleave the information bit coded blocks and redundant check bit coded blocks respectively; the modulation module is used to respectively interleave the information bit coded blocks and the redundant check bit coded blocks Constellation mapping is performed on the redundant check bit coding block; the SD coding module is used to encode the modulated information bit coding block in SD mode; the SM coding module is used to perform modulation on the modulated redundant check bit coding block in SM mode Coding; the transmission module is used to transmit the information bit coding block coded in SD mode and the redundancy check bit coding block coded in SM mode.

In addition, corresponding to the embodiment shown in FIG. 10, in the embodiment shown in FIG. 12, the transmission module may include a first mapping unit connected to the SD coding module and the SM coding module respectively, and a first mapping unit connected to the first mapping unit The second mapping unit of . Wherein, the first mapping unit is used to map the information bit coded block coded in SD mode and the redundancy check bit coded block coded in SM mode onto the time-frequency resource block; the second mapping unit is used to map the time-frequency resource block The information bit coded block and the redundant check bit coded block on the resource block are mapped to OFDM subcarriers and then transmitted.

Further, the data transmission and processing device of the embodiment shown in FIG. 12 may also include a third storage module, connected to the modulation module, for storing modulation information that decreases from high order to low order; the modulation module is used for For the retransmitted data packets of the same data packet whose number of retransmissions increases, select the modulation mode from the high order to the low order in turn from the third storage module, and carry out the interleaved information bit coding block and the redundant check bit coding block modulation.

As shown in FIG. 13, it is a flow chart of Embodiment 3 of the data transmission processing method of the present invention, which includes the following steps:

Step 301, classify the cells in the SFN into multiple types with the same number of antennas as the terminal with the least number of antennas in the SFN. The plurality is specifically a positive integer greater than 1, in particular, the plurality is 2.

Step 302, encode the data packet to generate a part including information bits and redundant check bits.

Step 303, divide the redundant check bit part into multiple redundant check bit parts.

In step 304, a plurality of coding blocks are generated by combining the information bit part with the plurality of redundant check bit parts.

Step 305, perform interleaving on multiple coding blocks respectively.

Step 306, performing constellation mapping on the multiple interleaved coding blocks respectively.

Step 307, perform OFDM subcarrier mapping on the modulated multiple coded blocks, and map the modulated multiple coded blocks to the same time-frequency resource for transmission in multiple types of cells respectively.

As shown in Figure 14, it is a schematic diagram of the information bits and redundant check bit encoding blocks transmitted in the single frequency network of the present invention, and the SFN is divided into two types: the first cell and the second cell, wherein the first cell transmits The coding block includes information bits and redundancy check bits 1, and the coding block transmitted by the second cell includes information bits and redundancy check bits 2.

When the terminal is in the center of the cell, it only needs to receive the data signal of the cell, that is: a coding block including information bits and some redundant check bits; when the terminal is in the edge of the cell, multiple antennas can be used to receive the same information bits and Multiple coded blocks composed of different redundant check bits are merged through IR to improve the receiving quality of data information; and multiple coded blocks composed of the same information bit part and different redundant check bit parts The coding blocks are mapped to the same time-frequency resource for transmission, which can save time-frequency resources, improve the data throughput and transmission efficiency of the system, and achieve a balance between transmission reliability and transmission efficiency.

Between step 306 and step 307, the SD mode may be used to encode the information bit part modulated by the constellation mapping, and the SM mode may be used to encode the plurality of redundant check bit parts modulated by the constellation map. In step 307, transmit the coded blocks with the same information bits and redundant check bits in multiple cells of the same type; in different types of cells, transmit the information bits and multiple redundant check bits that are different from each other multiple code blocks.

As shown in Figure 15, it is a schematic structural diagram of Embodiment 3 of the data transmission and processing device of the present invention. The data transmission and processing device of this embodiment can be used to implement the flow of the embodiment of the data transmission and processing method shown in Figure 13 above, which includes The partition module, the second coding module, the distribution module, the generation module, the interleaving module, the modulation module, the mapping module and the transmission processing module are connected in sequence. Among them, the partition module is used to divide the cells in the SFN into multiple types with the same number of antennas as the terminals in the SFN; the second coding module is used to code the data packets to generate codes including information bits and redundant check bits block; the allocation module is used to divide the redundant check bit part into multiple redundant check bit parts; the generation module is used to combine the multiple redundant check bit parts by the information bit part to generate multiple coded blocks; the interleaving module It is used to interleave multiple coded blocks respectively; the modulation module is used to perform constellation mapping on multiple interleaved coded blocks respectively; the mapping module is used to perform OFMDM subcarrier mapping on multiple coded blocks after modulation in SM mode, and the The modulated multiple coded blocks are mapped to the same time-frequency resource; the transmission processing module is used to transmit multiple coded blocks with the same information bit distribution and different redundant check bits in multiple types of cells respectively.

Referring to FIG. 15 again, the data transmission processing device in the embodiment of the present invention may also include a fourth storage module connected to the partition module for storing information on the number of antennas of terminals in the SFN; The number of antennas in the SFN is divided into multiple types with the same number of antennas as the terminals in the SFN.

Further, the data transmission processing device in the embodiment shown in FIG. 15 may also include an SD encoding module and/or an SM encoding module, which is arranged between the modulation module and the mapping module, and connected to the modulation module and the mapping module respectively. The SD coding module is used to encode the information bits in the modulated coding block in SD mode; the SM coding module is used to code the redundant check bits in the modulated coding block in SM mode, and the mapping module is used to use In the spatial multiplexing method, OFDM subcarrier mapping is performed on multiple coded blocks composed of information bits coded in SD mode and redundant check bits coded in SM mode, and multiple coded blocks after modulation are mapped to the same time-frequency resources. As shown in FIG. 16 , it is a schematic structural diagram of Embodiment 4 of the data transmission processing device of the present invention.

As shown in FIG. 17, it is a flow chart of Embodiment 4 of the data transmission processing method of the present invention. This embodiment includes the following steps:

Step 401: Encode the data packet to generate an encoded block.

Step 402, perform interleaving on the coded block of the encoded data packet.

Step 403, performing constellation mapping on the interleaved coding block.

Step 404, the data packet in step 401 can be the retransmission data packet of the same data packet, also can be the original data packet, alternately adopt STBC and SFBC mode to transmit the encoding block of multiple retransmission data packets of the same data packet after modulation , which requires the combination of the alternating rule and the spatial coding method adopted by the previous retransmitted data packet to determine the spatial coding method that the current retransmitted data packet should adopt; or, alternately use STBC and SFBC to transmit the code after modulation of different data packets block, which requires the combination of the alternating rule and the spatial coding method adopted by the previous transmission data packet to determine the spatial coding method that the current data packet should adopt.

Since terminals in different channel environments are suitable for different spatial coding methods in SD, when the scale of SFN is large enough, the environment of different user terminals in the same SFN is very different, and it is suitable for users who transmit data in SFBC and STBC. There are all terminals, and the SFBC and STBC spatial coding methods can be used to transmit data at intervals, which can ensure that user terminals in different environments can receive data correctly and improve the reliability of data transmission.

Overall beneficial technical effect of the embodiment of the present invention:

In the embodiment of the present invention, when the data packet is transmitted for the first N times, the SM method is used for transmission, which can save power; and the SD method is used to retransmit the data packet after the N times, which is conducive to being correctly received by terminals with poor channel environments , reduce the number of times it receives data packets repeatedly, and use SM and SD to transmit data packets, which not only provides diversity gain but also improves system capacity, thereby obtaining a balance between high spectral efficiency, high transmission efficiency and transmission quality; the interval adopts SFBC Data transmission with STBC mode further ensures the reliability of data transmission.

Transmission of the information bit part in SD mode can effectively guarantee the correctness and reliability of the information bit part, while transmission of the redundancy check bit part in SM mode can improve the data transmission efficiency, thereby achieving a balance between transmission reliability and transmission efficiency. the balance;

For multi-antenna terminals, multiple coding blocks composed of the same information bit part and different redundancy check bit parts are mapped to the same time-frequency resource block for transmission, which saves time-frequency resources and improves the system's data throughput and transmission efficiency ; Moreover, the terminal at the edge of the cell can combine multiple coding blocks for redundancy checks, thereby improving the receiving quality of data information, thereby achieving a balance between transmission reliability and transmission efficiency;

The interval uses SFBC and STBC space coding to transmit data, which can ensure that user terminals in different environments can receive data correctly and improve the reliability of data transmission.

Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present invention, rather than limiting the understanding of the present invention. Although the present invention has been described in detail with reference to the above-mentioned preferred embodiments, those skilled in the art should understand that: it can still modify or replace the technical solution of the present invention, and such modification or replacement does not depart from the technology of the present invention. The spirit and scope of the programme.

Claims (21)

1. A data transmission processing method, characterized in that, comprising the following steps: Encode the data packet to generate an encoding block; Interleave the encoded blocks; Constellation mapping is performed on the interleaved coding block; Judging whether the data packet corresponding to the modulated coding block is the first Nth transmission, wherein N is an integer not less than 1; if so, transmitting the modulated coding block in a spatial multiplexing manner; if not, The modulated coded block is transmitted in a space diversity manner. 2. The data transmission processing method according to claim 1, wherein the modulated encoded block is multiple retransmission data packets of the same data packet, and different data retransmissions of the same data packet are multiple times The information bits in the packets are the same, and the redundancy check bits are the same or different. 3. The data transmission processing method according to claim 1 or 2, characterized in that the constellation mapping of the interleaved coding block is specifically: using a modulation method that decreases from high order to low order to calculate the number of retransmissions The added coding blocks are modulated. 4. The data transmission processing method according to claim 1, characterized in that, the space-diversity transmission of the modulated coded blocks is specifically: space-time block codes and space-frequency block codes are used to transmit the modulated coded blocks at intervals code block. 5. The data transmission processing method according to claim 4, characterized in that, the interval adopts space-time block code and space-frequency block code to transmit the modulated coded block specifically as follows: Alternately using space-time block codes and space-frequency block codes to transmit the encoded blocks of the modulated data packets; or alternatively using space-time block codes and space-frequency block codes to transmit encoded blocks modulated by different data packets. 6. The data transmission processing method according to claim 4, further comprising: pre-setting the single frequency network or most terminal types in the single frequency network, the sequence number of the data packet or the sequence number of the retransmission packet of the data packet and Correspondence between spatial encoding methods; The interval adopts space-time block code and space-frequency block code to transmit the modulated coding block specifically as follows: determine the spatial coding method of the current coding block according to the data packet sequence number or retransmission packet sequence number of the current coding block, and use the determined space The encoding mode transmits the encoded block. 7. A method for data transmission and processing, comprising the following steps: Encode the data packet to generate an encoding block; Interleave the encoded blocks; Constellation mapping is performed on the interleaved coding block; Alternately using space-time block codes and space-frequency block codes to transmit the encoded blocks of multiple retransmission data packets of the same data packet after modulation; or alternately using space-time block codes and space-frequency block codes to transmit different data packets The coded block after modulation. 8. A data transmission and processing device, characterized in that it comprises: A first encoding module, configured to encode the data packet to generate an encoding block; an interleaving module, configured to interleave the coded block; a modulation module, configured to perform constellation mapping on the interleaved coding block; A recording module, configured to record the number of transmissions of the data packet; The judging module is used to judge whether the data packet corresponding to the modulated coding block is the first Nth transmission according to the recorded transmission times information of the data packet, wherein N is an integer not less than 1; A space diversity processing module, configured to transmit the modulated coded block in a space diversity manner when the data packet corresponding to the modulated coded block is not transmitted for the first N times; The spatial multiplexing processing module is configured to transmit the modulated coded block in a spatial multiplexing manner when the data packet corresponding to the modulated coded block is transmitted for the first N times. 9. The data transmission processing device according to claim 8, further comprising: The first storage module is used for storing the recorded transmission times of the data packets. 10. The data transmission processing device according to claim 8, further comprising: The second storage module is used to store the corresponding relationship information between the single frequency network or most terminal types in the single frequency network, the sequence number of the data packet or the sequence number of the retransmission packet of the data packet, and the spatial coding mode; The spatial diversity processing module determines the spatial coding mode of the current coding block from the data packet sequence number or the retransmission packet sequence number of the current coding block according to the correspondence information, and transmits the coding block using the determined spatial coding method. 11. The data transmission processing device according to any one of claims 8 to 10, further comprising: The third storage module is used to store the modulation mode information decreasing from high order to low order; The modulation module is used to sequentially select modulation modes from the third storage module that are descending from high order to low order for the retransmission data packets of the same data packet whose number of retransmissions increases. 12. A data transmission and processing method, comprising the following steps: Encoding the data packet to generate an encoding block including information bits and redundant check bits; performing serial-to-parallel conversion on the coded block comprising information bits and redundant check bits to generate an coded block of information bits and a coded block of redundant check bits; respectively interleaving the information bit coding block and the redundancy check bit coding block; Constellation mapping is performed on the interleaved information bit coding block and the redundant check bit coding block respectively; Encoding the modulated information bit encoding block in a space diversity manner, and encoding the modulated redundancy check bit encoding block in a spatial multiplexing manner; The information bit coding block coded in the space diversity mode and the redundancy check bit coding block coded in the space multiplexing mode are transmitted. 13. The data transmission and processing method according to claim 12, characterized in that, the information bit coding block coded in space diversity mode and the redundancy check bit coding block coded in space multiplexing mode are specifically as follows: Time division multiplexing, frequency division multiplexing, or time-frequency division multiplexing is used to transmit the information bit coding block coded in space diversity mode and the redundancy check bit code block coded in space multiplexing mode. 14. The data transmission and processing method according to claim 13, characterized in that, the transmission of the information bit coded using space diversity coding is carried out by means of time division multiplexing, frequency division multiplexing or time frequency division multiplexing. Blocks and redundant check bits coded in a spatially multiplexed manner. Coded blocks include: Respectively map the information bit coded block coded by space diversity and the redundancy check bit coded block coded by spatial multiplexing onto the time-frequency resource block, and carry out Orthogonal Frequency Division Multiplexing (OFDM) subcarrier mapping before transmission . 15. A data transmission and processing device, comprising: The second encoding module is used to encode the data packet to generate an encoding block including information bits and redundant check bits; A serial-to-parallel conversion module, configured to perform serial-to-parallel conversion on the coded blocks including information bits and redundant check bits, to generate information bit coded blocks and redundant check bit coded blocks; An interleaving module, configured to interleave the information bit coding block and the redundant check bit coding block; A modulation module, configured to perform constellation mapping on the interleaved information bit encoding block and redundant check bit encoding block; A space diversity encoding module, configured to encode the modulated information bit encoding block in a space diversity manner; A spatial multiplexing encoding module, configured to encode the modulated redundant check bit encoding block in a spatial multiplexing manner; The transmission module is configured to transmit the information bit coded block coded in space diversity mode and the redundancy check bit coded block coded in space multiplexing mode. 16. The data transmission processing device according to claim 15, characterized in that the transmission module includes: The first mapping unit is configured to map the information bit coded block coded in the space diversity mode and the redundancy check bit coded block coded in the space multiplexing mode onto the time-frequency resource block; The second mapping unit is configured to perform OFDM subcarrier mapping on the information bit coded block and redundant check bit coded block mapped to the time-frequency resource block. 17. A data transmission processing method, comprising the following steps: classifying the cells within the single frequency network into types with the same number of antennas as the terminal having the minimum number of antennas within the single frequency network; Encoding the data packet to generate information bits and redundant check bits; dividing the redundant check bit part into a plurality of redundant check bit parts; generating a plurality of coding blocks by combining the information bit part with the plurality of redundant check bit parts; performing interleaving on the plurality of coding blocks respectively; performing constellation mapping on the plurality of interleaved coding blocks respectively; performing orthogonal frequency division multiplexing (OFDM) subcarrier mapping on the modulated coded blocks, mapping the modulated coded blocks to the same time-frequency resource, and mapping them to the same Multiple different coding blocks on time-frequency resources. 18. The data transmission processing method according to claim 17, characterized in that, after performing constellation mapping on the interleaved information bit coded blocks and redundant parity bit coded blocks respectively, further comprising: adopting a space diversity method encoding the information bit portion; The transmission of multiple different coded blocks mapped to the same time-frequency resource block in the multi-type cells is specifically: transmitting coded blocks with the same information bits and redundant check bits in the same type of cells; Multiple coded blocks with information bits and different redundancy check bits are transmitted in different types of cells. 19. A data transmission and processing device, comprising: A partitioning module, configured to divide the cells in the single frequency network into multiple types with the same number of antennas as the terminal with the minimum number of antennas in the single frequency network; The second encoding module is used to encode the data packet to generate an encoding block including information bits and redundant check bits; An allocation module, configured to divide the redundant check bit part into multiple redundant check bit parts; A generating module, configured to combine the information bit part with the plurality of redundant check bit parts to generate a plurality of coded blocks; an interleaving module, configured to interleave the plurality of coded blocks respectively; A modulation module, configured to perform constellation mapping on the plurality of interleaved coding blocks respectively; A mapping module, configured to perform OFDM subcarrier mapping on the modulated multiple encoded blocks, and map the modulated multiple encoded blocks to the same time-frequency resource; a transmission processing module, configured to Multiple coding blocks having the same information bits and different redundancy check bits are respectively transmitted in the multiple types of cells. 20. The data transmission processing device according to claim 19, further comprising: The fourth storage module is used to store the number of antennas of the terminal in the single frequency network. 21. The data transmission processing device according to claim 19 or 20, further comprising: A space diversity encoding module, configured to encode the information bits in the modulated encoding block in a space diversity manner; The mapping module is used to perform orthogonal frequency division multiplexing subcarrier mapping on a plurality of coded blocks composed of redundant check bits and information bits encoded in a space diversity mode by using a spatial multiplexing method, and the modulated multiple coded blocks are mapped to the same time-frequency resource.

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