WO2017190555A1

WO2017190555A1 - Single-carrier based data transmission method and apparatus

Info

Publication number: WO2017190555A1
Application number: PCT/CN2017/076822
Authority: WO
Inventors: 吴涛
Original assignee: 华为技术有限公司
Priority date: 2016-05-06
Filing date: 2017-03-15
Publication date: 2017-11-09

Abstract

Provided is a single-carrier based data transmission method. The method comprises generating a frame and sending the frame. A data part of the frame includes 2N data blocks; the 2N blocks are arranged from the first data block to the 2N^th data block in sequence; each of the data blocks comprises a payload part and a guard interval (GI); and the payload parts of different data blocks are separated by the GI, wherein the payload part of the 2n^th data block is obtained by multiplying the payload part of the (2n-1)^th data block by a phase-shift sequence, with n = 1, 2 …, N, and N being an integer greater than 0. By means of the method, the robustness of data transmission can be improved, and longer-distance data transmission can be supported.

Description

Single carrier based data transmission method and device

This application claims the priority of the CN patent application filed on May 6, 2016, the Chinese Patent Office, Application No. 201610298397.6, entitled "Single-Carrier-Based Data Transmission Method and Apparatus", which is also claimed in 2016. Priority of the CN patent application filed on June 13, 2013 by the Chinese Patent Office, application number 201610415525.0, entitled "A single-carrier based data transmission method and apparatus", this application also claims on September 29, 2016 The priority of the CN Patent Application, which is hereby incorporated by reference in its entirety in its entirety in its entirety in the the the the the the the the the the the

Technical field

The present application belongs to the field of communications technologies, and in particular, to a data transmission method and apparatus based on a single carrier.

Background technique

The standardization of 802.11 series standards for Wireless Local Area Networks (WLAN: WLAN) makes the deployment cost of WLAN technology greatly reduced. Wireless Fidelity (English: Wireless Fidelity, referred to as WiFi) is a brand of wireless network communication technology, held by the WiFi Alliance, to improve interoperability between 802.11-based wireless network products, using the 802.11 family of protocols. A wireless local area network can be referred to as a WiFi network. Among the 60 GHz high-frequency WiFi, the existing standard 802.11ad does not support transmission over long distances (for example, 50 to 100 meters).

Summary of the invention

In view of this, the present application provides a single carrier-based data transmission method and apparatus for solving the problem that the existing standard 802.11ad does not support long-distance transmission.

In one aspect, the embodiment of the present application provides a method for transmitting data based on single carrier, which is applied to a wireless communication system of 6 GHz or higher. The method includes generating a frame and transmitting a frame, where the data portion of the frame includes 2N data blocks. The 2N data blocks are sequentially arranged from the first data block to the 2Nth data block, the data block includes a payload portion and a guard interval GI, and the payload portions of different data blocks are separated by GI, wherein the 2nth data The payload portion of the block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N being an integer greater than zero. By implementing the solution of the embodiment of the present application, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

Wherein, the phase shift coefficient setting of the phase shift sequence includes at least the following implementation manner.

In a possible implementation, the phase shift coefficients of the phase shift sequence are specified by a standard, and the phase shift coefficients include: 90° or 180° or 270°.

In another possible implementation manner, the signaling part of the frame includes a phase field, the phase field includes 1 bit, and when the phase field is the first value, a phase shift coefficient of the phase shift sequence Is 0°, when The phase field is a second value, and the phase shift coefficient of the phase shift sequence is 180°.

In a further possible implementation, the signaling part of the frame includes a phase field, the phase field includes at least 2 bits, and when the phase field is the first value, a phase shift of the phase shift sequence The coefficient is 0°, when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 90°, and when the phase field is the third value, the phase shift coefficient of the phase shift sequence is 180°, when the phase field is the fourth value, the phase shift coefficient of the phase shift sequence is 270°.

When the phase shift sequence adopts the above embodiment, when the phase field is "0" or "00", no phase rotation is performed on the payload portion of the data block, which ensures compatibility with the previous generation standard. When the phase field is other values, Through the phase rotation, the receiving end passes the diversity and improves the robustness of data transmission.

In a possible implementation manner, before the sending end generates the frame, the method further includes: receiving channel feedback information, where the channel feedback information includes a phase shift coefficient.

In a possible implementation manner, the payload portion of the data block includes 448 symbols, and the guard interval of the data block includes 64 symbols.

On the other hand, an embodiment of the present application provides a data transmission method based on a single carrier, where the data transmission method includes generating a frame and transmitting the frame, where a data portion of the frame includes a plurality of data blocks, where the data block includes The payload portion and the guard interval GI, the payload portion of the different data blocks are separated by a GI, wherein the first signal and the reverse order first signal form a matrix, which is multiplied by the Q matrix to obtain a payload portion of the data block. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

On the other hand, an embodiment of the present application provides a device based on single carrier data transmission, which is applied to a wireless communication system above 6 GHz, the device includes a baseband processor for generating a frame, and the device further includes a transceiver for transmitting the frame. . The data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from the first data block to the 2Nth data block, the data block including a payload portion and a guard interval GI, different data blocks. The payload portion is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N is greater than 0. The integer. By implementing the solution of the embodiment of the present application, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

In another possible implementation manner, the signaling part of the frame generated by the baseband processor includes a phase field, where the phase field includes 1 bit, and when the phase field is the first value, the phase shift The phase shift coefficient of the sequence is 0°, and when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 180°.

In a further possible implementation, the signaling part of the frame generated by the baseband processor includes a phase field, the phase field includes at least 2 bits, and when the phase field is the first value, the phase The phase shift coefficient of the shift sequence is 0°, when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 90°, and when the phase field is the third value, the phase shift sequence The phase shift coefficient is 180°, and when the phase field is the fourth value, the phase shift coefficient of the phase shift sequence is 270°.

When the phase shift sequence adopts the above embodiment, when the phase field is "0" or "00", the net of the data block The phase is not phase-rotated to ensure compatibility with the previous generation standard. When the phase field is other values, the phase is rotated, and the receiver passes the diversity to improve the robustness of data transmission.

In a possible implementation manner, before the baseband processor generates a frame, the transceiver is further configured to receive channel feedback information, where the channel feedback information includes a phase shift coefficient.

On the other hand, an embodiment of the present application provides a data transmission apparatus based on a single carrier, where the data transmission method includes generating a frame and transmitting the frame, where a data portion of the frame includes a plurality of data blocks, where the data block includes The payload portion and the guard interval GI, the payload portion of the different data blocks are separated by a GI, wherein the first signal and the reverse order first signal form a matrix, which is multiplied by the Q matrix to obtain a payload portion of the data block. In this way, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

The present application provides a single carrier based data transmission method and apparatus, wherein a transmitting end generates a frame and transmits the frame, the data portion of the frame includes 2N data blocks, and 2N data blocks are from the first data block to the first 2N data blocks are sequentially arranged, each data block includes a payload portion and a guard interval GI, and the payload portions of different data blocks are separated by GI, wherein the payload portion of the 2nth data block is composed of the 2n-1th data block The payload portion is multiplied by the phase shift sequence, n=1, 2..., N, N is an integer greater than 0. By the above manner, the robustness of data transmission can be improved, and data transmission over a longer distance is supported.

DRAWINGS

FIG. 1 is an application scenario diagram of a wireless local area network.

2 is an application scenario diagram of a cellular communication network.

FIG. 3 is a flowchart of a method according to Embodiment 1 of the present application.

4 is a frame structure diagram of an embodiment of the present application.

FIG. 5 is a first sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 6 is a second sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 7 is a third sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 8 is a fourth sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 9 is a fifth sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 10 is a sixth sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 11 is a seventh sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 12 is a eighth sub-picture of signal processing of a data block in the embodiment of the present application.

FIG. 13 is a physical structural diagram of a device according to Embodiment 3 of the present application.

FIG. 14 is a physical structural diagram of a device according to Embodiment 4 of the present application.

Figure 15 is a block diagram showing the signal processing of Embodiment 5 of the present application.

16 is a frame structure diagram of Embodiment 5 of the present application.

Figure 17 is a block diagram showing the signal processing of Embodiment 6 of the present application.

FIG. 18 is a frame structure diagram of Embodiment 6 of the present application.

FIG. 19 is a schematic diagram of bit interleaving according to Embodiment 6 of the present application.

FIG. 20 is a schematic diagram of symbol interleaving according to Embodiment 6 of the present application.

Figure 21 is a signal processing diagram 1 of Embodiment 7 of the present application.

Figure 22 is a diagram showing signal processing of Embodiment 7 of the present application.

Figure 23 is a signal processing diagram 1 of Embodiment 8 of the present application.

Figure 24 is a diagram showing signal processing of Embodiment 8 of the present application.

detailed description

In order to make the objects, technical solutions and advantages of the present application more clear, the specific embodiments of the present application are further described in detail below with reference to the accompanying drawings. In order to fully understand the present application, numerous specific details are recited in the following detailed description.

The embodiment of the present application can be applied to a WLAN. Currently, the standard adopted by the WLAN is the IEEE 802.11 series. The WLAN network may include a plurality of basic service sets (English: Basic Service Set, BSS for short), wherein multiple BSSs are connected to the core network device through the switching device, as shown in FIG. 1 . Each basic service set may include a site of an access point class (AP, English: Access Point) and multiple non-access point classes (English: None Access Point Station, referred to as Non-AP STA).

Sites of access point classes, also known as wireless access points or hotspots. The AP is mainly deployed in the home, inside the building, and inside the park. The typical coverage radius is tens of meters to hundreds of meters. An AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect the wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP may be a WiFi chip or a terminal device with a WiFi chip or a network device with a WiFi chip. APs can support multiple formats such as 802.11ay, 802.11ad, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

A non-access point class (English: None Access Point Station, referred to as Non-AP STA), which can be a wireless communication chip, a wireless sensor, or a wireless communication terminal. Specifically, for example, a smart phone, a tablet computer and a personal computer supporting WiFi communication functions, a set top box and a smart TV supporting WiFi communication functions, a smart wearable device supporting WiFi communication function, an in-vehicle communication device supporting WiFi communication function, and supporting WiFi Communication function drone. The site can support multiple formats such as 802.11ay, 802.11ad, 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. It should be noted that the Non-AP STA is simply referred to as STA below.

The embodiment of the present application can also be applied to a cellular communication system, where a cellular communication system is usually composed of a cell, and each cell includes a base station (English: Base Station, BS for short), and the base station is a user terminal (English: User Equipment, referred to as UE). Providing communication services in which the base station is connected to the core network device, as shown in FIG.

It should be noted that the cellular communication system mentioned in the embodiments of the present application includes, but is not limited to, a narrowband Internet of Things system (English: Narrow Band-Internet of Things, referred to as NB-IoT), global mobile communication. System (English: Global System for Mobile Communications, GSM for short), Enhanced Data Rate for GSM Evolution (EDGE: EDGE), Wideband Code Division Multiple Access (English: Wideband Code Division) Multiple Access (WCDMA), Code Division Multiple Access 2000 (English: Code Division Multiple Access, CDMA2000 for short), Time Division Synchronization Code Division Multiple Access (English: Time Divi- sion-Synchronization Code Division Multiple Access, TD for short) -SCDMA), Long Term Evolution (LTE) and next-generation mobile communication systems.

In the embodiment of the present application, the base station is a device deployed in a radio access network to provide a wireless communication function for the UE. The base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. In a system using different radio access technologies, the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved NodeB, eNB or eNodeB), in the third In the system (English: 3rd Generation, 3G for short), it is called Node B (English: Node B). For convenience of description, in all embodiments of the present application, the foregoing apparatus for providing a wireless communication function to a UE is collectively referred to as a base station or a BS.

The UEs involved in the embodiments of the present application may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem. The UE may also be referred to as a mobile station (English: mobile station, MS for short), a terminal (English: terminal), a terminal device (English: terminal equipment), and may also include a subscriber unit (English: subscriber unit), a cellular phone. (English: cellular phone), smart phone (English: smart phone), wireless data card, personal digital assistant (English: Personal Digital Assistant, PDA) computer, tablet computer, wireless modem (English: modem), handheld device (English) :handset), laptop (English: laptop computer), machine type communication (English: Machine Type Communication, referred to as: MTC) terminal. For convenience of description, in all embodiments of the present application, the above mentioned devices are collectively referred to as UEs.

Example 1

Embodiment 1 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2. 3 is a flow chart of the data transmission method, and the specific steps are as follows:

Step 201: Generate a frame, the data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from a first data block to a 2Nth data block, where the data block includes a payload portion and a guard interval. GI, the payload portion of different data blocks is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N is an integer greater than zero.

Step 202: Send the frame.

Specifically, the data transmission method is applied to a high frequency wireless communication system, and the high frequency includes a frequency band of 6 GHz or more. Preferably, the data transmission method is applicable to the 28 GHz band or the 60 GHz band.

Specifically, the frame includes a signaling part and a data part, as shown in FIG. 4, where the signaling part is composed of a short training field (English: Short Training Field, STF for short) and a channel estimation sequence (English: Channel Estimate, referred to as :CE) and the header field (English: Header). The data portion of the frame contains 2N data blocks, the 2N data blocks are sequentially arranged from the first data block to the 2Nth data block, the data block includes a payload portion and a guard interval GI, and the payload portions of different data blocks are separated by GI, where the data The payload portion of the block contains 448 symbols, and the guard interval of the data block contains 64 symbols.

It should be noted that the symbols of the payload portion of the data block adopt binary phase shift keying (English: Binary Phase Shift Keying, BPSK) modulation mode, π/2-BPSK modulation mode, and quadrature phase shift coding (English: Quadrature Phase Shift Keying, referred to as QPSK) modulation mode, π/2-QPSK or 16QAM (English: Quadrature Amplitude Modulation, referred to as QAM). The above modulation method is applicable to all embodiments of the present application.

Optionally, the payload portion of the data block 2n in step 201 is obtained by multiplying the payload portion of the data block 2n-1 by the phase shift sequence. The specific implementation is shown in FIG. 5. Assuming that the payload portion signal of data block 1 is s(k), the payload portion signal of data block 2 is

Phase shift sequence is

Δ _N is an integer. It should be noted that the payload part signal of the data block 2 is

It is also within the scope of protection of this application.

In particular, the phase shift sequence comprises at least the following embodiments.

Embodiment 1: The phase shift coefficient of the phase shift sequence is specified by a standard, and the phase shift coefficient includes: 90° or 180° or 270°. If the phase shift coefficient is 90°, Δ _N = 0.25*N, if the phase shift coefficient is 180°, Δ _N = 0.5*N, and if the phase shift coefficient is 270°, Δ _N = 0.75*N.

Embodiment 2: The signaling part of the frame includes a phase field, the phase field includes 1 bit, and when the phase field is the first value, the phase shift coefficient of the phase shift sequence is 0°, when the phase The field is the second value, and the phase shift sequence has a phase shift coefficient of 180°. Illustratively, when the phase field is "0", Δ _N =0, the phase shift coefficient is 0°, when the phase field is "1", Δ _N = 0.5 * N, and the phase shift coefficient is 180°.

Embodiment 3: The phase field includes at least 2 bits, when the phase field is the first value, the phase shift coefficient of the phase shift sequence is 0°, and when the phase field is the second value, the phase shift coefficient of the phase shift sequence For 90°, when the phase field is the third value, the phase shift coefficient of the phase shift sequence is 180°, and when the phase field is the fourth value, the phase shift coefficient of the phase shift sequence is 270°. Illustratively, the phase field contains 2 bits, when the phase field is "00", Δ _N =0, the phase shift coefficient is 0°, when the phase field is "01", Δ _N = 0.25 * N, the phase shift coefficient is 90 °, when the phase field is "10", Δ _N = 0.5 * N, the phase shift coefficient is 180 °, when the phase field is "11", Δ _N = 0.75 * N, and the phase shift coefficient is 270 °.

When the phase shift sequence adopts Embodiments 2 and 3, when the phase field is "0" or "00", no phase rotation is performed on the payload portion of the data block, which ensures compatibility with the previous generation standard, when the phase field is other values. When the phase is rotated, the receiving end passes the diversity and improves the robustness of data transmission.

Optionally, the data transmission method further includes step 200.

Step 200: Before the generating the frame, the method further includes: receiving channel feedback information, where the channel feedback information includes a phase shift coefficient. The sender obtains the phase shift coefficient from the channel feedback information, and further determines the header in the frame to be sent. Part of the phase field assignment. It should be noted that step 200 is applicable to Embodiments 2 and 3 of the phase shift sequence.

Optionally, there are several possible implementations of step 201.

Step 201a: Generate a frame, the data portion of the frame includes a plurality of data blocks, a payload half of the data block 3n-1 and a payload portion of the data block 3n, and a payload portion and data through the data block 3n-2 The first half of the payload of block 3n-1 is multiplied by a phase shift sequence, and n is an integer greater than zero. The frame structure in step 201a is as shown in FIG. 4, and the data block structure of the frame in step 201a is as shown in FIG. 6. The information sequence carried in the frame in step 201a is 672 symbols as a coding block unit, and three data blocks are required to be repeated. Transmission, in which the frames in step 201a are all applicable to embodiments 1-3 of the phase shift sequence.

Step 201b: Generate a frame, the data portion of the frame includes a plurality of data blocks, the first half of the payload of the data block 2n and the 1/4 portion of the payload of the data block 2n-1, and the payload of the data block 2n-1 The first 3/4 portion is multiplied by the phase shift sequence, the second half of the payload of data block 2n is the sign of the other coded block, and n is an integer greater than zero. The frame structure in step 201b is as shown in FIG. 4, and the data block structure of the frame in step 201b is as shown in FIG. 7. The information sequence carried in the frame in step 201b is 336 symbols as a coding block unit, wherein the frames in step 201b are Embodiments 1-3 of the phase shift coefficient are applicable.

Step 201c: Generate a frame, the data portion of the frame includes a plurality of data blocks, and the pre-pay 3/4 portion of the data block 2n is obtained by multiplying the pre-pay 3/4 portion of the data block 2n-1 by the phase shift sequence. The 1/4 portion of the payload of the data block 2n and the data block 2n-1 is the symbol of the other coding block, and n is an integer greater than 0. The frame structure in step 201c is as shown in FIG. 4, and the data block structure of the frame in step 201c is as shown in FIG. 8. The information sequence carried in the frame in step 201c is 336 symbols as a coding block unit, wherein the frames in step 201c are Embodiments 1-3 of the phase shift coefficient are applicable.

Step 201d: Generate a frame, the data portion of the frame includes a plurality of data blocks, and the pre-pay 3/8 portion of the data block 2n is obtained by multiplying the pre-pay 3/8 portion of the data block 2n-1 by the phase shift sequence. The 5/8 portion of the payload of the data block 2n and the data block 2n-1 is the symbol of the other coding block, and n is an integer greater than 0. The frame structure in step 201d is as shown in FIG. 4, and the data block structure of the frame in step 201d is as shown in FIG. 9. The information sequence carried in the frame in step 201d is 168 symbols as a coding block unit, wherein the frames in step 201d are Embodiments 1-3 of the phase shift coefficient are applicable.

Step 201e: Generate a frame, the data portion of the frame includes a plurality of data blocks, the 169th symbol to the 336th symbol of the payload of the data block n, multiplied by the first 168 symbols of the payload of the data block n The shift sequence is obtained. The 112 symbols after the payload of the data block n are the symbols of other coding blocks, and n is an integer greater than 0. The frame structure in step 201e is as shown in FIG. 4, and the data block structure of the frame in step 201e is as shown in FIG. 10, and the information sequence carried in the frame in step 201e is 168 symbols as a coding block unit, wherein the frames in step 201e are Embodiments 1-3 of the phase shift coefficient are applicable.

Step 201f: Generate a frame, the data portion of the frame includes a plurality of data blocks, and the payload of the data block n+1 is obtained by multiplying the payload of the data block n by a phase shift sequence, and n is an integer greater than 0. The frame structure in step 201f is as shown in FIG. The data block structure of the frame in step 201f is as shown in FIG. 11. As can be seen from FIG. 11, the content of the data block 1 is multiplied by a different phase shift sequence, and carried in different data blocks, and the number of retransmissions is greater than 2, wherein the steps are performed. Embodiments 1-3 of the phase shift coefficients are applicable to the frames in 201f.

It should be added that the action of the receiver in the single carrier data transmission method includes at least the following implementations.

Step 1: Receive a frame, which is sent by the transmitting end. The data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from the first data block to the 2Nth data block, the data block including a payload portion and a guard interval GI, different data blocks. The payload portion is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N is greater than 0. The integer.

Step 2: Parse the frame, obtain the payload portion of each data block of the frame, and merge the 2n-1 data block and the payload portion of the 2nth data block, n=1, 2..., N, N is greater than An integer of 0.

Specifically, the action of combining the 2n-1th data block and the payload portion of the 2nth data block includes at least the following implementation.

Implementation 1: The standard specifies the phase shift coefficient of the phase shift sequence, and the receiver performs a phase shift operation on the payload portion of the 2nth data block of the frame, wherein the phase shift sequence at the receiving end is

The receiver combines the payload portion of the 2nth data block that has completed phase shifting with the payload portion of the 2n-1th data block. Illustratively, the standard specified phase shift coefficient is 180°, and the phase shift sequence at the transmitting end is

That is, e ^jπk , correspondingly, the dependent sequence of the receiving end is

That is, e ^-jπk , by the phase shift operation of the receiving end, remove the phase factor of the payload portion of the 2nth data block of the frame, and realize the payload portion of the 2nth data block and the payload portion of the 2n-1th data block. merge.

Embodiment 2: The receiver reads the phase shift coefficient of the phase field in the Header field of the frame, and the receiver removes the phase factor of the payload portion of the 2nth data block of the frame according to the phase shift coefficient, and implements the 2nth data. The payload portion of the block is merged with the payload portion of the 2n-1th data block. In implementation 2, the phase shift coefficient of the phase field is not specified by the standard, but is carried by the phase field in the Header field of the frame. The corresponding relationship between the phase field and the phase shift coefficient has been described in detail in the foregoing. It will not be described again. The phase shift operation of the receiving end in the second embodiment is the same as the phase shifting operation of the receiving end in the first embodiment, and will not be described again.

It should be noted that the action of the receiver to merge the payload portions of the data blocks also applies to the implementation of steps 201a-201f.

In summary, the present application provides a single carrier based data transmission method, the data transmission method includes generating a frame and transmitting the frame, the data portion of the frame includes 2N data blocks, and the 2N data blocks are from The first data block to the 2Nth data block are sequentially arranged, the data block includes a payload portion and a guard interval GI, and the payload portions of different data blocks are separated by GI, wherein the payload portion of the 2nth data block is The net of the 2n-1th data block The charge portion is multiplied by the phase shift sequence, n=1, 2..., N, N is an integer greater than 0. By the above manner, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

Example 2

Embodiment 2 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2.

Step 1: Generate a frame, the data portion of the frame includes a plurality of data blocks, the data block includes a payload portion and a guard interval GI, and the payload portion of the different data blocks is separated by a GI, wherein the first signal and the reverse order A signal consists of a matrix, which is multiplied by the Q matrix to obtain the payload portion of the data block.

Step 2: Send the frame.

It should be noted that the first signal is a data sequence to be sent.

Specifically, the data transmission method includes: continuously transmitting a set of signals s(k) to be transmitted twice, wherein the second transmitted signal is a result of the reverse order of the first transmission signal and multiplied by the phase shift sequence. . For example, if the signal transmitted for the first time is s ₁ (k)=s(k), the signal transmitted for the second time is

A signal obtained by multiplying s1(k) and s2(k) by a matrix Q

Transfer, as shown in Figure 12.

It should be noted that the signal obtained by multiplying s1(k) and s2(k) by the matrix Q

The specific calculation process is as follows:

Specifically, when s(k) adopts BPSK modulation, the Q matrix used is

or

Specifically, when s(k) adopts 16QAM modulation, the Q matrix is adopted.

or

Step 1: Receive a frame, which is sent by the transmitting end. The data portion of the frame includes a plurality of data blocks, The data block includes a payload portion and a guard interval GI. The payload portion of the different data blocks is separated by a GI, wherein the first signal and the reverse order first signal form a matrix, and multiplied by the Q matrix to obtain a payload portion of the data block.

Step 2: Parse the frame, and form a matrix of the payload portion of the data block and the payload portion of the data block after the reverse order, and multiply the inverse matrix of the Q matrix.

In summary, the present application provides a single carrier based data transmission method, the data transmission method comprising generating a frame and transmitting the frame, the data portion of the frame comprising a plurality of data blocks, the data block including a payload The partial and guard interval GI, the payload portion of the different data blocks are separated by GI, wherein the first signal and the reverse order first signal form a matrix, and the Q matrix is followed by the payload portion of the data block. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Example 3

A schematic block diagram of a single-carrier data transmission apparatus provided in Embodiment 3 of the present application, as shown in FIG. 13, the apparatus is, for example, an access point, a station, a base station, or a user terminal, and the apparatus may also be dedicated to implement related functions. Integrated Circuit (English: Application Specific Integrated Circuit, ASIC) or chip. The apparatus 1000 includes a processor 1010, a memory 1020, a baseband processor 1030, a transceiver 1040, an antenna 1050, a bus 1060, and a user interface 1070. The apparatus may be the AP and STA shown in FIG. 1, or the base station and UE shown in FIG. 2.

In particular, processor 1010 controls the operation of apparatus 1000, which may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic device. Memory 1020 can include read only memory and random access memory and provides instructions and data to processor 1010, and a portion of memory 1020 can also include non-volatile random access memory (NVRAM). The processor 1010 typically executes program instructions in the memory 1020 to implement the logical and arithmetic operations of the single carrier data transmission method of the present application.

The baseband processor 1030 is configured to generate a baseband signal (eg, a frame or a data packet), or parse the received baseband signal to obtain data, wherein the baseband processor includes an encoder and a modulator, and the encoder can improve the robustness of the baseband signal. Sexuality, overcomes interference and fading in the wireless propagation environment, and reduces errors caused by transmission. The modulator can select the appropriate signal modulation method according to the wireless propagation environment.

The transceiver 1040 includes a transmitting circuit and a receiving circuit. The transmitting circuit is used for the baseband signal generated by the baseband processor 1030 to adopt up-conversion modulation to obtain a high-frequency carrier signal. The high-frequency carrier signal is transmitted through the antenna 1050, and the receiving circuit receives the antenna 1050. The high frequency signal is subjected to a down conversion operation to obtain a low frequency baseband signal. Antenna The number of 1050 is one or more. The device 1000 can also include a user interface 1070 that includes a keyboard, a pickup, and/or a touch screen. User interface 1070 can communicate content and control operations to access point 1000.

The various components of device 1000 are coupled together by a bus 1060, which in addition to the data bus includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 1060 in the figure. It should be noted that the foregoing description of the access point structure can be applied to subsequent embodiments.

The baseband processor 1030 is configured to generate a frame, where a data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from a first data block to a 2Nth data block, where the data block includes a payload. Part and guard interval GI, the payload portion of different data blocks are separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1 , 2..., N, N are integers greater than zero.

The transceiver 1040 is configured to send the frame.

It should be noted that the payload portion of the data block includes 448 symbols, and the guard interval of the data block includes 64 symbols. The structure of the frame has been explained in detail in Embodiment 1, and will not be described again.

Specifically, the phase shift coefficient of the phase shift sequence includes at least the following embodiments.

Embodiment 1: The phase shift coefficient of the phase shift sequence is specified by a standard, and the phase shift coefficient includes: 90° or 180° or 270°.

Embodiment 2: a signaling part of a frame generated by the baseband processor includes a phase field, the phase field includes 1 bit, and when the phase field is a first value, a phase shift coefficient of the phase shift sequence is 0°, when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 180°.

Embodiment 3: a signaling part of a frame generated by the baseband processor includes a phase field, the phase field includes at least 2 bits, and when the phase field is a first value, a phase shift coefficient of the phase shift sequence 0°, when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 90°, and when the phase field is the third value, the phase shift coefficient of the phase shift sequence is 180 °, when the phase field is the fourth value, the phase shift coefficient of the phase shift sequence is 270°.

It should be noted that the foregoing embodiment of the phase shift coefficient has been explained in detail in Embodiment 1 and will not be described again. Furthermore, the single carrier data transmission device can also perform steps 201a-201f in Embodiment 1.

Optionally, before the baseband processor generates the frame, the transceiver is further configured to receive channel feedback information, where the channel feedback information includes a phase shift coefficient. The device obtains a phase shift coefficient from the channel feedback information, thereby determining to treat The phase field of the header part of the frame is assigned. It should be noted that the action of the transceiver receiving channel feedback information is applicable to Embodiments 2 and 3 of the phase shift sequence.

Optionally, as another embodiment, the foregoing apparatus 1000 may also serve as a receiver for single carrier data transmission.

The transceiver 1040 is configured to receive a frame, where a data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from a first data block to a 2Nth data block, where the data block includes a payload portion. And the guard interval GI, the payload portion of the different data blocks is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N are integers greater than zero.

The baseband processor 1030 is configured to parse the frame, obtain a payload portion of each data block of the frame, and combine the 2n-1 data block and the payload portion of the 2nth data block, n=1, 2..., N , N is an integer greater than zero.

It should be noted that the action of merging the payload portions of the 2n-1th data block and the 2nth data block has been explained in detail in Embodiment 1, and will not be described again.

The embodiment of the present application provides a single carrier data transmission device, wherein a frame generated by a baseband processor of the data transmission device is sent by a transceiver, and a data portion of the frame includes 2N data blocks, and the 2N data blocks are from the first One data block to the 2Nth data block are sequentially arranged, the data block includes a payload portion and a guard interval GI, and the payload portion of the different data blocks is separated by GI, wherein the payload portion of the 2nth data block is The payload portion of 2n-1 data blocks is multiplied by a phase shift sequence, n=1, 2..., N, N being an integer greater than zero. In the above manner, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

Example 4

A schematic block diagram of a single-carrier data transmission apparatus provided in Embodiment 4 of the present application, as shown in FIG. 14, the apparatus is, for example, an access point, a station, a base station, or a user terminal, and the apparatus may also be dedicated to implement related functions. Integrated Circuit (English: Application Specific Integrated Circuit, ASIC) or chip. The apparatus 1100 includes a processor 1110, a memory 1120, a baseband processor 1130, a transceiver 1140, an antenna 1150, a bus 1160, and a user interface 1170. The apparatus may be the AP and STA shown in FIG. 1, or the base station and UE shown in FIG. 2. The components of the device 1100 have been explained in detail in Embodiment 3 and will not be described again.

The baseband processor 1130 is configured to generate a frame, where the data portion of the frame includes a plurality of data blocks, where the data block includes a payload portion and a guard interval GI, and the payload portions of the different data blocks are separated by a GI, where the first The signal and the reverse order first signal form a matrix, which is multiplied by the Q matrix to obtain a payload portion of the data block.

The transceiver 1140 is configured to send the frame.

It should be noted that the first signal is a data sequence to be transmitted.

Specifically, when the first signal adopts BPSK modulation, the Q matrix used is

or

Specifically, when the first signal adopts 16QAM modulation, the Q matrix is adopted.

Optionally, as another embodiment, the foregoing apparatus 1100 may also serve as a receiver for single carrier data transmission.

The transceiver 1130 is configured to receive a frame, where the data portion of the frame includes a plurality of data blocks, where the data block includes a payload portion and a guard interval GI, and the payload portion of the different data blocks is separated by a GI, where the first signal Forming a matrix with the first signal in reverse order, and multiplying the matrix by the Q moment to obtain the payload portion of the data block.

The baseband processor 1140 is configured to parse the frame, and form a matrix of the payload portion of the data block and the reversed data block payload portion, and multiply the inverse matrix of the Q matrix.

It should be noted that the specific process of parsing a frame has been detailed in Embodiment 2 and will not be described again.

In summary, the present application provides a single carrier based data transmission apparatus, the data transmission method comprising generating a frame and transmitting the frame, the data portion of the frame comprising a plurality of data blocks, the data block including a payload The partial and guard interval GI, the payload portion of the different data blocks are separated by GI, wherein the first signal and the reverse order first signal form a matrix, and the Q matrix is followed by the payload portion of the data block. In this way, the robustness of data transmission can be improved, and data transmission over a longer distance can be supported.

Example 5

Embodiment 5 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2. The specific steps of the data transmission method are as follows:

Step 501: Generate a frame, where a data portion of the frame includes N data blocks, and the N data blocks are sequentially arranged from a first data block to an Nth data block, where the data block includes a payload portion and a guard interval. GI, the payload portion of the different data blocks are separated by a GI, the payload portion of the N data blocks being combined by each of the first data sequence of the first data sequence set and each second data sequence of the second data sequence set Forming, each first data sequence of the first set of data sequences is obtained by modulation by the LDPC coded block, and each second data sequence of the second set of data sequence is coded by a low density parity check code LDPC The block is obtained by scrambling and modulation, and N is an integer greater than zero.

Step 502: Send the frame.

It should be noted that the LDPC coded block s(k) is in units of 448 symbols, 672 symbols, or 1344 symbols. The length of the payload portion is 448 symbols, and the length of the guard interval GI is 64 symbols.

It should be noted that the manner in which the first data sequence set and the second data sequence set are generated is as shown in FIG. 15 . The generation of each of the first data sequences in the first set of data sequences includes modulation, and the generation of each of the second data sequences in the second set of data sequences includes scrambling and modulation. The first data sequence and the second data sequence are modulated in the same manner and have the same length.

The following takes the LDPC code block length as 672 symbols as an example, as shown in FIG. 16.

When the modulation method is BPSK,

with

The sequence length is 672 symbols, and the payload portion of the first data block of the frame and the payload portion of the first half of the second data block are carried.

The payload portion of the second half of the second data block of the frame and the payload portion of the third data block are carried

By extension, when the data to be transmitted is composed of a plurality of LDPC coded blocks, the first set of data sequences is located in the payload portion of the 3i+1th data block and the net of the first half of the 3i+2th data block. And the second data sequence set is located at a payload portion of a second half of the 3i+2th data block and a payload portion of the 3i+3th data block, where i=0, 1, . . . , n.

When the modulation method is QPSK,

with

The sequence length is 336 symbols, and the 1 to 336 symbols of the payload portion of the first data block of the frame are carried.

337 to 448 symbols of the payload portion of the first data block of the frame and 1 to 224 symbols of the payload portion of the second data block are carried

Extensively, when the data to be transmitted is composed of a plurality of LDPC coded blocks, each of the first data sequence and each of the second data sequence sets The two sets synthesize a combined sequence of 672 symbol lengths, and the combined sequence is padded to the payload portion of the N data blocks.

When the modulation method is 16QAM,

with

The sequence length is 168 symbols, and the 1 to 168 symbols of the payload portion of the first data block of the frame are carried.

169 to 336 symbols carried in the payload portion of the first data block of the frame

Extensively, when the data to be transmitted is composed of a plurality of LDPC coded blocks, each of the first data sequence and each of the second data sequence sets The two sets synthesize a combined sequence of 336 symbol lengths, which is populated into the payload portion of the N data blocks.

When the modulation method is 64QAM,

with

The sequence length is 112 symbols, and the 1 to 112 symbols of the payload portion of the first data block of the frame are carried.

113 to 224 symbols carried in the payload portion of the first data block of the frame

Extensively, when the data to be transmitted is composed of a plurality of LDPC coded blocks, each of the first data sequence and each of the second data sequence sets The two sets synthesize a combined sequence of 224 symbol lengths, which is populated into the payload portion of the N data blocks.

In summary, the present application provides a single carrier based data transmission method, the data transmission method comprising generating a frame and transmitting the frame, the data portion of the frame comprising a plurality of data blocks, the data block including a payload a partial and guard interval GI, the payload portion of the different data blocks being separated by a GI, the payload portion of the N data blocks being each of the first data sequence and the second data sequence set of the first data sequence set Combining two data sequences, each of the first data sequences is obtained by modulation by a low density parity check code LDPC coding block, and each second data sequence of the second data sequence set is passed by the LDPC coding block Scrambled and modulated, N is an integer greater than zero. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Step 1: Receive a frame, which is sent by the transmitting end. The data portion of the frame includes N data blocks, and the N data blocks are sequentially arranged from the first data block to the Nth data block, the data block including a payload portion and a guard interval GI, different data blocks The payload portion is separated by a GI, and the payload portion of the N data blocks is composed of each of the first data sequence of the first data sequence set and each of the second data sequence of the second data sequence set, each of the The first data sequence is obtained by modulation by a low density parity check code LDPC code block, and each second data sequence of the second data sequence set is obtained by scrambling and modulating the LDPC code block, where N is greater than 0. The integer.

Step 2: Parse the frame, and divide the payload portion of the N data blocks into blocks. The size of each block is related to the modulation mode, and the symbols in the first half of each block are demodulated and processed. The symbols in the latter half of the block are demodulated and descrambled, and the demodulated symbols of the first half of each block are combined with the demodulated symbols of the second half of each block.

It should be noted that the length of the payload portion is 448 symbols, and the length of the guard interval GI is 64 symbols. The first data sequence and the second data sequence are modulated in the same manner. When the modulation mode is BPSK, the size of each block is 1344 symbols. When the modulation mode is QPSK, the size of each partition is 672 symbols. When the modulation mode is 16QAM, the size of each partition is 336 symbols. When the modulation mode is 64QAM, each block has a size of 224 symbols.

In summary, the present application provides a single carrier based data transmission method, the method includes: receiving a frame and transmitting a parsed frame, the data portion of the frame comprising a plurality of data blocks, the data block including a payload portion And insurance The guard interval GI, the payload portion of different data blocks is separated by GI, and the payload portion of the N data blocks is divided into blocks, and the size of each block is related to the modulation mode, and the symbols of the first half of each block are separated. Performing demodulation processing, demodulating and descrambling the symbols in the second half of each block, and combining the demodulated symbols of the first half of each block with the demodulated symbols of the second half of each block . In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Optionally, as another data transmission method, the data transmission method includes the following steps.

Step 1: Generate a frame, the data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from the first data block to the 2Nth data block, and the data block includes a payload portion and a guard interval. GI, the payload portion of different data blocks is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by a scrambling sequence, n=1, 2,... , N, N are integers greater than zero.

Step 2: Send the frame.

It should be noted that the length of the payload portion is 448 symbols, the length of the GI is 64 symbols, and the length of the scrambling sequence is 448 symbols. The symbol of the payload portion may be a modulation symbol of BPSK, QPSK, 16QAM or 64QAM.

It should be noted that the value interval of the scrambling sequence is (-1, +1).

In summary, the present application provides a single carrier based data transmission method, including generating a frame and transmitting a frame, the data portion of the frame includes 2N data blocks, and the 2N data blocks are from the first The data blocks are sequentially arranged to the 2Nth data block, the data block includes a payload portion and a guard interval GI, and the payload portions of the different data blocks are separated by GI, wherein the payload portion of the 2nth data block is 2nd - The payload portion of one data block is multiplied by the scrambling sequence. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Example 6

Embodiment 6 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2. The specific steps of the data transmission method are as follows:

Step 601: Generate a frame, where a data portion of the frame includes N data blocks, and the N data blocks are sequentially arranged from a first data block to an Nth data block, where the data block includes a payload portion and a guard interval. GI, the payload portion of the different data blocks are separated by a GI, the payload portion of the N data blocks being combined by each of the first data sequence of the first data sequence set and each second data sequence of the second data sequence set Forming, each of the first data sequences is obtained by a modulation operation by a low density parity check code LDPC coding block, and each second number of the second data sequence set The sequence is obtained from the LDPC coded block by an interleaving operation and a modulation operation, and N is an integer greater than zero.

Step 602: Send the frame.

It should be noted that the manner in which the first data sequence set and the second data sequence set are generated is as shown in FIG. 17. The generation of each of the first data sequences in the first set of data sequences includes modulation, and the generation of each of the second data sequences in the second set of data sequences includes interleaving and modulation. The first data sequence and the second data sequence are modulated in the same manner.

The following takes the LDPC code block length as 672 symbols as an example, as shown in FIG. 18 .

When the modulation method is BPSK,

with

When the modulation method is QPSK,

with

When the modulation method is 16QAM,

with

When the modulation method is 64QAM,

with

It should be noted that the interleaving operation includes at least the following two modes.

Mode 1: Reverse processing, input is x(k), k=0, 1, ..., K-1, output is x(k'), k'=-k+K-1. That is, if the input signal is x(0), x(1), ..., x(671), the output signals are x(671), x(672)..., x(1), x(0).

Method 2: Row and column interleaving, the implementation is as follows:

a) The input is x(k), k=0,1,...,K-1, divided into two parts, respectively

x ₁ (k)=x(k),k=0,...,K/2-1 and x ₂ (k)=x(k+K/2),k=0,...,K/2-1

b) the output is y(k), where y(2k)=x ₁ (k), k=0,...,K/2-1 and

y(2k+1)=x ₂ (k), k=0, . . . , K/2-1.

The specific operation is shown in Fig. 19, and K=8 is taken as an example.

In summary, the present application provides a single carrier based data transmission method, the data transmission method comprising generating a frame and transmitting the frame, the data portion of the frame comprising a plurality of data blocks, the data block including a payload a partial and guard interval GI, the payload portion of the different data blocks being separated by a GI, the payload portion of the N data blocks being each of the first data sequence and the second data sequence set of the first data sequence set Combining two data sequences, each of the first data sequences is obtained by modulation by a low density parity check code LDPC coding block, and each second data sequence of the second data sequence set is passed by the LDPC coding block Interleaved and modulated, N is an integer greater than zero. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Step 1: Receive a frame, which is sent by the transmitting end. The data portion of the frame includes N data blocks, and the N data blocks are sequentially arranged from the first data block to the Nth data block, the data block including a payload portion and a guard interval GI, different data blocks The payload portion is separated by a GI, and the payload portion of the N data blocks is composed of each of the first data sequence of the first data sequence set and each of the second data sequence of the second data sequence set, each of the The first data sequence is obtained by modulation by a low density parity check code LDPC coding block, and each second data sequence of the second data sequence set is obtained by interleaving and modulating by the LDPC coding block, where N is greater than 0. Integer.

Step 2: Parse the frame, and divide the payload portion of the N data blocks into blocks. The size of each block is related to the modulation mode, and the symbols in the first half of each block are demodulated and processed. The symbols in the latter half of the block are demodulated and deinterleaved, and the demodulated symbols of the first half of each block are demodulated with the second half of each block. The symbols are merged.

It should be noted that the length of the payload portion is 448 symbols, and the length of the guard interval GI is 64 symbols. The first data sequence and the second data sequence are modulated in the same manner and have the same length. When the modulation mode is BPSK, the size of each block is 1344 symbols. When the modulation mode is QPSK, the size of each partition is 672 symbols. When the modulation mode is 16QAM, the size of each partition is 336 symbols. When the modulation mode is 64QAM, each block has a size of 224 symbols.

In summary, the present application provides a single carrier based data transmission method, the data transmission method includes receiving a frame and parsing a frame, the data portion of the frame includes a plurality of data blocks, and the data block includes a payload portion and The guard interval GI, the payload portion of different data blocks is separated by GI, and the payload portion of the N data blocks is divided into blocks, and the size of each block is related to the modulation mode, and the symbols of the first half of each block are separated. Performing demodulation processing, demodulating and deinterleaving the symbols of the second half of each block, and combining the demodulated symbols of the first half of each block with the demodulated symbols of the second half of each block deal with. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Step 1: Generating a frame, the data portion of the frame includes N data blocks, the N data blocks are sequentially arranged from the first data block to the Nth data block, and the N data blocks are subjected to interleaving processing.

Step 2: Send the frame.

It should be noted that, in FIG. 20, eight data blocks are taken as an example to give an operation of interleaving processing.

In the above data transmission method, data can be obtained by performing deinterleaving processing on N data blocks on the receiving side.

In summary, the present application provides a data transmission method including generating a frame and transmitting a frame, the data portion of the frame includes N data blocks, and the N data blocks are from the first data block. The Nth data blocks are sequentially arranged, and the N data blocks are subjected to interleaving processing. In the above manner, the data transmission method can improve the robustness of data transmission and support data transmission over a longer distance.

Example 7

Embodiment 7 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2. The specific steps of the data transmission method are as follows:

Step 701: Generate a frame, where a data portion of the frame includes 2N data blocks, and the 2N data blocks are sequentially arranged from a first data block to a 2Nth data block, where the data block includes a payload portion and a guard interval. GI, different data The payload portion of the block is separated by GI, wherein the value of the payload portion of the 2nth data block is obtained by the conjugate operation from the value of the payload portion of the 2n-1th data block, n=1, 2..., N , N is an integer greater than zero.

Step 702: Send the frame.

It should be noted that the structures of the 2n-1th data block and the 2nth data block are as shown in FIG. 21 and FIG. 22. Wherein, the guard interval portion and the payload portion of the data block of FIG. 21 are operated by a phase shift of π/2, and the guard interval portion and the payload portion of the data block of FIG. 22 are not subjected to a phase shift operation.

Specifically, the modulation schemes of the data blocks of FIG. 21 and FIG. 22 include BPSK, QPSK, 16QAM, 16APSK or 64QAM.

The transmission and reception process of single carrier data transmission will be described below with reference to FIGS. 21 and 22.

The single carrier signal transmitted by the transmitter in Figure 21 includes the following parts:

When the transmitting device uses a short guard interval (GI), M=480, G=32, and N=512. When the transmitting device adopts the normal GI, M=448, G=64, and N=512. When the transmitting device adopts a long GI, M=384, G=128, and N=512.

Protection interval GI part:

l=0,1,...,G-1

Payload part: m=0, 1, ..., M-1.

The signal transmitted on the 2n-1th data block is z(n), n=0,1,...,N-1,N=M+G

The signal transmitted on the 2nth data block is y(n), n=0,1,...,N-1,N=M+G

(·) ^* indicates conjugate operation

Specifically, the receiving process of the single carrier signal transmitted by the transmitter in FIG. 21 is as follows:

The receiver receives the frequency domain signals r _f1 (k) and r _f2 (k) transmitted through the channel as follows:

Where: h _f (k) is the channel response corresponding to subcarrier k;

x _f (k)=FFT{x(n)} is a frequency domain signal corresponding to x(n);

y _f (k)=FFT{y(n)} is a frequency domain signal corresponding to y(n);

k is the subcarrier serial number;

Easy to verify,

Therefore, the signals are combined as follows:

■ For k=0,...,N/2

Correct

with

Combine to get:

■ For k=N/2+1,...,N-1

Correct

with

Combine to get:

Obtain r _f (k), k=0,1,...,N-1, and perform IFFT transformation to obtain x(n).

The single carrier signal transmitted by the transmitter in Figure 22 includes the following parts:

Protection interval part:

l=0,1,...,G-1.

Payload part:

m=0, 1, ..., M-1.

The signal transmitted on the 2n-1th data block is x(n), n=0,1,...,N-1,N=M+G

The signal transmitted on the 2nth data block is y(n), n=0,1,...,N-1,N=M+G

(·) ^* indicates conjugate operation

Specifically, the receiving process of the single carrier signal transmitted by the transmitter in FIG. 22 is as follows:

Easy to verify,

Therefore, the signals are combined as follows:

■ For k=0

Correct

with

Combine to get:

■ For k=1,...,N-1

Correct

Combine with r _f2 (Nk) to get:

Obtain r _f (k), k=0,1,...,N-1, and perform IFFT transformation to obtain x(n).

In summary, the present application provides a single carrier based data transmission method, the data transmission method includes generating a frame and transmitting the frame, the data portion of the frame includes 2N data blocks, and the 2N data blocks are from The first data block to the 2Nth data block are sequentially arranged, the data block includes a payload portion and a guard interval GI, and the payload portions of different data blocks are separated by GI, wherein the payload portion of the 2nth data block The value is obtained by the conjugate operation of the value of the payload portion of the 2n-1th data block, and n=1, 2..., N, N are integers greater than 0. By the above manner, the robustness of data transmission can be improved. Support for longer distance data transmission.

Example 8

Embodiment 8 of the present application provides a single-carrier data transmission method, which can be applied to an access point and a station, for example, an AP and a STA1-STA2 in FIG. 1, a base station in FIG. 2, and UE1-UE2. The specific steps of the data transmission method are as follows:

Step 801: Generate a first radio frame and a second radio frame, where the first radio frame and the second radio frame both include 2N data blocks, and the 2N data blocks are from the first data block to the 2Nth data block. The data blocks are sequentially arranged, the data block includes a payload portion and a guard interval GI, and the payload portions of the different data blocks are separated by a GI, wherein the payload portion of the 2n-1th data block of the first radio frame The value includes a first information set, and a value of a payload portion of the 2n-1th data block of the second radio frame includes a second information set, and a payload portion of the 2nth data block of the first radio frame The value comprises a conjugate of the second set of information, the value of the payload portion of the 2nth data block of the second radio frame comprising a conjugate of the first set of information, n=1, 2..., N, N being greater than zero The integer.

Step 802: Send the first radio frame by using a first antenna, and send the second radio frame by using a second antenna.

It should be noted that the structures of the 2n-1th data block and the 2nth data block are as shown in FIG. 23 and FIG. 24. Wherein, the guard interval portion and the payload portion of the data block of FIG. 23 operate with a phase shift of π/2, and the guard interval portion and the payload portion of the data block of FIG. 24 are not subjected to a phase shift operation.

Specifically, the modulation schemes of the data blocks of FIG. 23 and FIG. 24 include BPSK, QPSK, 16QAM, 16APSK or 64QAM.

The transmission and reception process of single carrier data transmission will be described below with reference to FIGS. 23 and 24.

The single carrier signal transmitted by the transmitter in Figure 23 includes the following parts:

The guard intervals GI sent on the two antennas are the same, both:

l=0,1,...,G-1;

s ₁ (m) and s ₂ (m) are single carrier data signals to be transmitted, where s ₁ (m) is the first set of information and s ₂ (m) is the second set of information.

The data signal sent by the first antenna is as follows:

◆ The signal transmitted on the 2n-1th data block is x ₁ (n), n=0, 1, ..., N-1, N=M+G

◆ The signal transmitted on the 2nth data block is y ₁ (n), n=0,1,...,N-1,N=M+G

The data signal sent by the second antenna is as follows:

◆ The signal transmitted on the 2n-1th data block is x ₂ (n), n=0,1,...,N-1,N=M+G

◆ The signal transmitted on the 2nth data block is y ₂ (n), n=0,1,...,N-1,N=M+G

The frequency domain signal received by the receiver through the channel can be in the following form:

● The signal received by the first BLOCK can be expressed as follows:

● The signal received by the second BLOCK can be expressed as follows:

among them:

■

The signal received by the first antenna of the receiver in subcarrier k, the first BLOCK;

■

The signal received by the second antenna of the receiver in subcarrier k, the first BLOCK;

■

The signal received by the first antenna of the receiver in subcarrier k, the second BLOCK;

■

a signal received by the second antenna of the receiver in subcarrier k, the second BLOCK;

■h _f,11 (k) is the channel response of the first antenna of the transmitter to the first antenna of the receiver on subcarrier k;

■h _f,12 (k) is the channel response of the second antenna of the transmitter to the first antenna of the receiver on subcarrier k;

■h _f,21 (k) is the channel response of the second antenna of the transmitter to the second antenna of the receiver on subcarrier k;

■h _f,22 (k) is the channel response of the second antenna of the transmitter to the second antenna of the receiver on subcarrier k;

■x _f1 (k)=FFT{x ₁ (n)} is a frequency domain signal corresponding to x ₁ (n);

■x _f2 (k)=FFT{x ₂ (n)} is the frequency domain signal corresponding to x ₂ (n)

■ y _f1 (k)=FFT{y ₁ (n)} is a frequency domain signal corresponding to y ₁ (n);

■ y _f2 (k)=FFT{y ₂ (n)} is a frequency domain signal corresponding to y ₂ (n).

Easy to verify:

Therefore, the received signals can be combined as follows:

■ For k=0,...,N/2

Further can be obtained:

A zero-forcing solution for x(k) can be obtained:

x(k)=(H ^H (k)H(k)) ^-1 H ^H (k), where (·) ^H represents conjugate transposition of the matrix, and (·) ^-1 represents inversion of the matrix.

■ For k=N/2+1,...,N-1

The same can be obtained further:

A zero-forcing solution for x(k) can be obtained:

x(k)=(H ^H (k)H(k)) ^-1 H ^H (k), where (·) ^H represents conjugate transposition of the matrix, and (·) ^-1 represents inversion of the moment. Obtaining x(k) can obtain x _f1 (k) and x _f2 (k), and IFFT transform can be obtained for x _f1 (k) and x _f2 (k) to further obtain x ₁ (n) and x ₂ (n) .

The single carrier signal transmitted by the transmitter in Figure 24 includes the following parts:

The guard interval GI signals transmitted on the two antennas are the same, both:

l=0,1,...,G-1.

s ₁ (m) and s ₂ (m) are transmitted single carrier data signals, where s ₁ (m) is the first set of information and s ₂ (m) is the second set of information.

The data signal sent by the first antenna is as follows:

The data signal sent by the second antenna is as follows:

Easy to verify:

Therefore, the received signals can be combined as follows:

■ For k=0

Further can be obtained:

A zero-forcing solution for x(k) can be obtained:

■ For k=1,...,N-1

The same can be obtained further:

A zero-forcing solution for x(k) can be obtained:

Obtaining x(k) can obtain x _f1 (k) and x _f2 (k), thereby further obtaining s ₁ (m) and s ₂ (m).

In summary, the present application provides a single carrier based data transmission method, including generating a first radio frame and a second radio frame and transmitting the first radio frame and the second radio frame. The first radio frame and the second radio frame both comprise 2N data blocks, and the 2N data blocks are sequentially arranged from a first data block to a 2Nth data block, the data block including a payload portion and protection Interval GI, net of different data blocks The payload portion is separated by a GI, wherein a value of a payload portion of the 2n-1th data block of the first radio frame includes a first information set, and a net of the 2n-1th data block of the second radio frame The value of the payload portion includes a second set of information, the value of the payload portion of the 2nth data block of the first radio frame includes a conjugate of the second information set, and the 2nth data block of the second radio frame The value of the payload portion includes the conjugate of the first information set, n=1, 2..., N, N is an integer greater than 0. By the above manner, the robustness of data transmission can be improved, and data transmission over a longer distance is supported. .

It should be noted that the single carrier data transmission methods of Embodiments 7 and 8 can be implemented by the single carrier data transmission apparatus of Embodiment 4. The baseband processor is used to implement the frame generation process in Embodiments 7-8, and the transceiver is used to implement the frame transceiving process in Embodiments 7-8. The single carrier data transmission method has been explained in detail in Embodiments 7-8, and the corresponding single carrier data transmission device embodiment will not be described again.

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 the understanding, the technical solution of the present invention, which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

Claims

A method based on single carrier data transmission, applied to a wireless communication system above 6 GHz, characterized in that the method comprises:

Generating a frame, the data portion of the frame comprising 2N data blocks, the 2N data blocks being sequentially arranged from the first data block to the 2Nth data block, the data block including a payload portion and a guard interval GI, different The payload portion of the data block is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N Is an integer greater than 0;

Send the frame.
The method of claim 1 wherein the phase shift coefficients of the phase shift sequence are specified by a standard, the phase shift coefficients comprising: 90 or 180 or 270.
The method according to claim 1, wherein the signaling portion of the frame comprises a phase field, the phase field comprises 1 bit, and when the phase field is a first value, the phase shift sequence The phase shift coefficient is 0°, and when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 180°.
The method according to claim 1, wherein the signaling portion of the frame comprises a phase field, the phase field comprises at least 2 bits, and when the phase field is a first value, the phase shift sequence The phase shift coefficient is 0°, when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 90°, and when the phase field is the third value, the phase shift sequence The shift coefficient is 180°, and when the phase field is the fourth value, the phase shift coefficient of the phase shift sequence is 270°.
The method according to any one of claims 3-4, wherein before the generating the frame, the method further comprises: receiving channel feedback information, the channel feedback information comprising a phase shift coefficient.
The method of claim 1 wherein the payload portion of the data block comprises 448 symbols and the guard interval of the data block comprises 64 symbols.
A device based on single-carrier data transmission, applied to a wireless communication system above 6 GHz, characterized in that the device comprises:

a baseband processor for generating a frame, the data portion of the frame comprising 2N data blocks, the 2N data blocks being sequentially arranged from a first data block to a 2Nth data block, the data block including a payload portion And the guard interval GI, the payload portion of the different data blocks is separated by GI, wherein the payload portion of the 2nth data block is obtained by multiplying the payload portion of the 2n-1th data block by the phase shift sequence, n=1, 2..., N, N are integers greater than 0;

a transceiver for transmitting the frame.
The apparatus according to claim 7, wherein the phase shift coefficient of said phase shift sequence is specified by a standard, said phase shift coefficient comprising: 90 or 180 or 270.
The apparatus according to claim 7, wherein the signaling portion of the frame generated by the baseband processor includes a phase field, the phase field includes 1 bit, and when the phase field is the first value, The phase shift coefficient of the phase shift sequence is 0°, and when the phase field is the second value, the phase shift coefficient of the phase shift sequence is 180°.
The apparatus according to claim 7, wherein the signaling portion of the frame generated by the baseband processor includes a phase field, the phase field includes at least 2 bits, and when the phase field is the first value, a phase shift coefficient of the phase shift sequence is 0°, and when the phase field is a second value, a phase shift coefficient of the phase shift sequence is 90°, and when the phase field is a third value, The phase shift sequence has a phase shift coefficient of 180° when the phase word The segment is the fourth value, and the phase shift sequence has a phase shift coefficient of 270°.
The apparatus according to any one of claims 9-10, wherein said transceiver is further configured to receive channel feedback information, said channel feedback information comprising a phase shift coefficient before said baseband processor generates a frame.
The apparatus of claim 7, wherein the payload portion of the data block comprises 448 symbols and the guard interval of the data block comprises 64 symbols.