WO2020088174A1

WO2020088174A1 - Wireless communication method, apparatus and system

Info

Publication number: WO2020088174A1
Application number: PCT/CN2019/108719
Authority: WO
Inventors: 胡远洲; 丁梦颖; 刘永; 汪凡
Original assignee: 华为技术有限公司
Priority date: 2018-11-02
Filing date: 2019-09-27
Publication date: 2020-05-07
Also published as: CN111147215B; CN111147215A

Abstract

Disclosed in the present application are a wireless communication method, apparatus, and system. The wireless communication method comprises: a transmitter generating a reference signal according to a reference signal sequence of a length M, wherein the reference signal sequence is generated according to a basic sequence configuration, the basic sequence configuration comprises the length N _ZC of a Zadoff-Chu sequence and the value of the root, where N _ZC＞M, and the values of M and N _ZC are positive integers; the transmitter transmitting uplink data, the uplink data carrying the related reference signal; after a receiver receives the uplink data and the reference signal, performing channel estimation by using the reference signal and demodulating the uplink data. The technical solution of the present application can be used so that the PAPR of uplink data is equal to or close to that of a reference signal and both are extremely low; the reference signal will not limit the non-linear PA output power, and the output power of the transmitted data and that of the transmitted reference signal are higher after PA, thereby improving the communication performance of a system.

Description

Wireless communication method, device and system

This application requires the priority of the Chinese patent application submitted to the State Intellectual Property Office of China on November 2, 2018 with the application number 201811303680.9 and the application name "Wireless Communication Method, Device and System", the entire contents of which are incorporated by reference in this document Applying.

Technical field

This application relates to the field of communication technology, and in particular to a wireless communication method, device, and system.

Background technique

New radio (NR) introduces π / 2 binary phase shift keying (BPSK) to modulate data, and undergo single-carrier frequency division through Fourier transform, inverse Fourier transform and other operations Multiple access (single carrier frequency division multiple access, SC-FDMA) waveform, and filter the data, so that the peak-to-average power ratio (Peak to Average Power Ratio, PAPR) of the waveform can be reduced. Specifically, the bit stream data to be transmitted is subjected to π / 2 BPSK modulation to obtain π / 2 BPSK modulated data, and then the π / 2 BPSK modulated data is subjected to operations such as Fourier transform, filtering, and inverse Fourier transform to obtain the time domain send data. The peak-to-average power ratio (PAPR) of the time-domain transmitted data generated in this way is very low, close to 2dB. Π / 2 BPSK in this application can also be called Pi / 2-BPSK.

The low PAPR waveform can work at a higher operating point through a nonlinear power amplifier (Power Amplifier, PA), that is, the output power of the low PAPR after the PA is higher than the output power of the high PAPR waveform after the PA, thus The receiver performance is also better. Therefore, the filtering of the SC / 2FDMA waveform modulated by Pi / 2-BPSK (binary phase shifting) is lower in PAPR than the traditional SC-FDMA waveform and orthogonal frequency division multiplexing (OFDM) waveform. The output after PA is higher and the demodulation performance is better.

Generally speaking, in addition to sending data, a reference signal (reference signal), or also called a pilot signal, is sent during the complete data transmission process. The reference signal sent with the data is a signal known by both terminal equipment and network equipment, and is mainly used to assist the receiving device in demodulating data, so it may also be called a demodulation reference signal (DMRS).

Uplink reference signals include demodulation reference signals (DMRS or DM-RS) and sounding reference signals (SRS). Among them, the uplink refers to the transmission direction from the terminal to the base station. Correspondingly, downlink refers to the transmission direction from the base station to the terminal. DMRS is mainly used for demodulation of the physical uplink channel, so that the base station can correctly demodulate the data information in the physical uplink channel. The physical uplink channel here includes a physical uplink shared channel (physical uplink shared channel, PUSCH) or a physical uplink control channel (physical uplink control channel, PUCCH). SRS is mainly used to estimate the uplink channel quality of different frequency bands, so that the base station can effectively allocate appropriate resources and transmission parameters for uplink transmission. The DMRS is located in the frequency band of the PUSCH or PUCCH, and is transmitted together with the PUSCH or PUCCH, so as to demodulate the PUSCH or PUCCH associated with the DMRS. Unlike DMRS, SRS does not have to be transmitted with any physical uplink channel. And, if the SRS is transmitted together with a physical uplink channel (such as PUSCH), the SRS usually occupies a different and usually larger frequency band.

In the upstream communication process, when the data adopts single carrier frequency division multiple access waveform, the reference signal usually adopts Zadoff-Chu sequence (also known as ZC sequence). The reference signal and data are located in different symbols in the time domain and occupy the same bandwidth in the frequency domain. The terminal device sends data and reference signals. After receiving the corresponding data and reference signals, the network device uses known reference signals to perform channel estimation and interpolation to estimate the channel response of the symbol where the data is located ( channel), and then use the received data and its estimated channel response to perform equalization and demodulation to demodulate the data sent by the terminal.

When sending data and also sending a reference signal, if the processing method of the sent data is to use the Pi / 2-BPSK modulated SC-FDMA waveform to filter, because the PAPR of the transmitted data is very low, the PAPR of the transmitted reference signal should also be the same as the transmitted The PAPR of the data is basically the same. In this way, the reference signal will not become a bottleneck limiting the output power of the non-linear PA, and the output power of the transmitted data and the transmitted reference signal after the PA can be relatively high. Therefore, when the transmitted data is filtered using the SC / 2FDMA waveform modulated by Pi / 2-BPSK, the corresponding reference signal also requires a low PAPR scheme. However, the PAPR scheme of the reference signal in the prior art cannot meet the demand. Continuously provide new technical solutions to adapt to the evolution of wireless transmission technology and improve the performance of wireless communications.

Summary of the invention

In the first aspect, a wireless communication method is provided. The wireless communication method may be executed by the terminal. The wireless communication method includes:

A reference signal is generated according to a reference signal sequence of length M; wherein the reference signal sequence corresponds to uplink data transmission and is generated according to a base sequence configuration that includes the length N _ZC and root of the Zadoff-Chu sequence The value of N _ZC >M; the values of M and N _ZC are positive integers; the upstream data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

Sending the uplink data and the reference signal associated with the uplink data transmission.

In a second aspect, a wireless communication method is provided. The wireless communication method can be executed by a base station. The wireless communication method includes:

Receiving uplink data and a reference signal associated with the uplink data transmission; the uplink data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

Determine the base sequence configuration of the reference signal sequence corresponding to the uplink data; the base sequence configuration includes values of the length N _ZC and root of the Zadoff-Chu sequence; the reference signal sequence corresponding to the uplink data is used to generate the With the reference signal, its length is M; where, N _ZC >M;

Estimate channel characteristics of uplink data transmission according to the base sequence configuration, and use the reference signal to demodulate the uplink data.

In a third aspect, a wireless communication device is provided. The wireless communication device may be a terminal. The wireless communication device includes:

A processor, configured to generate a reference signal according to a reference signal sequence of length M; wherein the reference signal sequence corresponds to uplink data and is generated according to a base sequence configuration, the base sequence configuration including the length N of the Zadoff-Chu sequence The values of _ZC and root; where, N _ZC >M; the values of M and N _ZC are positive integers; the upstream data is single carrier frequency division multiple access SC- modulated by π / 2 binary phase shift keying BPSK FDMA waveform;

The transceiver is used to send the uplink data and the reference signal associated with the uplink data transmission.

In a fourth aspect, a wireless communication device is provided. The wireless communication device may be a base station. The wireless communication device includes:

A transceiver for receiving uplink data and a reference signal associated with the uplink data transmission; the uplink data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

A processor, configured to determine a base sequence configuration of the reference signal sequence corresponding to the uplink data; the base sequence configuration includes a length of the Zadoff-Chu sequence N _ZC and values of roots; the reference signal sequence corresponding to the uplink data It is used to generate the reference signal and its length is M; where, N _ZC >M;

The processor is further configured to estimate channel characteristics of uplink data transmission according to the base sequence configuration, and use the reference signal to demodulate the uplink data.

Using any of the above methods, the modulation scheme for uplink data transmission is π / 2 BPSK modulation (hereinafter referred to as modulation scheme π / 2 BPSK or π / 2 BPSK modulation scheme). The π / 2 BPSK modulated data is transformed into a single carrier frequency division multiple access SC-FDMA waveform, and then transmitted, that is, the upstream data is π / 2 BPSK modulated single carrier frequency division multiple access SC- FDMA waveform. The reference signal sequence corresponding to the uplink data is a reference signal sequence corresponding to the modulation scheme for uplink data transmission. When the above-mentioned modulation scheme π / 2 BPSK is used for upstream data transmission, the base sequence configuration of the π / 2 BPSK reference signal sequence corresponding to the upstream data is selected. The terminal generates a reference signal corresponding to π / 2BPSK, the base station receives the reference signal corresponding to π / 2BPSK, uses the reference signal as a demodulation reference signal, demodulates the uplink data, and the uplink data and the demodulation reference The signals have the same or similar PAPR.

In an optional technical solution, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK is separately stored or set in the terminal and the base station. Using this optional technical solution is beneficial to save transmission overhead.

In an optional technical solution, the peak-to-average power ratio PAPR of the reference signal generated according to the base sequence configuration of the reference signal sequence corresponding to the π / 2BPSK, and the absolute value of the difference between the PAPR of the uplink data and the uplink data Zero or less than the preset value. With this optional technical solution, the PAPR of the upstream data is equal to or close to the PAPR of the reference signal, which is very low. The reference signal will not become a bottleneck limiting the output power of the nonlinear PA. The output power of the data and the transmitted reference signal after passing through the PA is relatively high, thereby improving the communication performance of the system.

In a fifth aspect, an embodiment of the present invention also provides a method for generating a reference signal sequence.

According to a sixth aspect, an embodiment of the present invention further provides a device for generating a reference signal sequence.

In the method for generating a reference signal sequence provided in the fifth aspect and the device provided in the sixth aspect, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK includes the length of the Zadoff-Chu sequence and the value of the root , The reference signal sequence is generated based on the Zadoff-Chu sequence;

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 6, the length N _ZC of the Zadoff-Chu sequence is 739. The value of the root of the Zadoff-Chu sequence is one or more of the following:

153,154,155,156,157,158,159,160,161,162,163,164,222,223,224,515,516,517,575,576,577,578,579,580,581,582,583,584,585,586.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 12, the length of the Zadoff-Chu sequence N _ZC is 307. The value of the root of the Zadoff-Chu sequence is one or more of the following:

33,34,35,36,37,38,39,40,41,42,88,89,132,133,134,173,174,175,218,219,265,266,267,268,269,270,271,272,273,274.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 18, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 353, and the root of the Zadoff-Chu sequence has one or more of the following values: 25, 26, 27, 28, 29, 30, 31, 64, 96,107,127,128,160,161,162,191,192,193,225,226,246,257,289,322,323,324,325,326,327,328; or

The length N _ZC of the Zadoff-Chu sequence is 2837, and the root of the Zadoff-Chu sequence is one or more of the following: 214,217,220,223,242,245,248,251,254,515,518,770,1027,1030,1293,1542,1807,1810,2065, 2319,2322,2581,2584,2587,2590,2593,2614,2617,2620,2623.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 24, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 337, and the root of the Zadoff-Chu sequence has one or more of the following values: 18, 19, 20, 21, 22, 45, 52, 72, 89,90,105,106,120,130,157,158,159,178,179,180,207,217,231,232,247,248,265,285,285,292,315,316,317,318,319; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2851, and the root of the Zadoff-Chu sequence has a value of one or more of the following: 161,163,165,177,179,181,183,185,187,189,191,611,757,759,889,891,893,1334,1336,1515,1517,1958,1960,1962, 2091,2093,2240,2660,2662,2664,2666,2668,2670,2672,2674,2685,2687,2689.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 30, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 313, and the root of the Zadoff-Chu sequence has one or more of the following values: 14, 15, 16, 55, 59, 74, 82, 87, 92,99,109,110,122,132,149,164,181,191,203,204,214,221,226,231,239,254,258,297,298,299; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2861, and the root of the Zadoff-Chu sequence has one or more of the following values: 129,132,139,142,145,148,151,154,601,752,902,905,998,1352,1355,1358,1501,1504,1507,1861, 1956,1959,2109,2258,2707,2710,2713,2716,2719,2722,2729,2732.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 36, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 389, and the root of the Zadoff-Chu sequence has one or more of the following values: 14, 15, 16, 17, 37, 51, 81, 93, 101, 124, 135, 148, 152, 159, 164, 169, 175,186,187,202,203,214,220,225,230,237,241,254,265,288,296,308,336,352,372,373,374,375; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2887, and the root of the Zadoff-Chu sequence has one or more of the following values: 108, 115, 118, 121, 124, 127, 394, 501, 656, 752, 920, 1002, 1255, 1379, 1382, 1385, 1502, 1505, 1508,1632,1883,1967,2133,2230,2385,2493,2760,2763,2766,2769,2772,2777.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 48, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 359, and the root of the Zadoff-Chu sequence has a value of one or more of the following: 10, 11, 12, 37, 53, 58, 74, 87, 99,101,104,116,123,136,146,174,185,213,223,236,243,255,258,260,272,285,301,306,322,347,348,349; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2903, and the root of the Zadoff-Chu sequence has one or more of the following values: 82,86,90,94,300,468,562,600,705,748,843,937,996,1000,1301,1404,1408, 1495,1499,1602,1903,1907,1965,2060,2155,2198,2303,2340,2435,2603,2808,2812,2816,2821.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 54 and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 373, and the root of the Zadoff-Chu sequence has one or more of the following values: 9,10,11,33,48,64,87,96,105,113,121,128,147,181,182,191,192,226,245,252,260,268,277,286,309,325,340,362,363,364; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2917, and the root of the Zadoff-Chu sequence has one or more of the following values: 73,77,81,333,500,568,600,619,749,944,998,1150,1287,1416,1420,1497, 1501, 1630, 1767, 1918, 1972, 2167, 2298, 2317, 2349, 2417, 2584, 2833, 2837, 2841.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 60, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 397, and the root of the Zadoff-Chu sequence has one or more of the following values: 9,10,34,43,51,62,68,73, 87,97,112,115,118,129,150,157,194,203,240,247,268,279,282,285,300,310,324,329,335,346,354,363,387,388; or

The length N _ZC of the Zadoff-Chu sequence is 2939, and the root of the Zadoff-Chu sequence is one or more of the following: 66,72,78,232,377,397,541,602,715,753,829,954,1004,1191,1271,1315,1388, 1430,1504,1551,1624,1668,1748,2110,2398,2542,2707,2861,2867,2873.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 72, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 317, and the root of the Zadoff-Chu sequence has one or more of the following values: 6, 7, 31, 36, 54, 57, 59, 62, 81,85,108,118,128,135,155,162,182,189,199,209,232,236,255,258,260,263,281,286,310,311; or

The length N _ZC of the Zadoff-Chu sequence has a value of 2957, and the root of the Zadoff-Chu sequence has one or more of the following values: 55,60,193,336,413,503,579,723,754,836,854,920,965,1005,1117,1171,1350,1446,1508, 1607,1786,2037,2121,2378,2454,2544,2621,2764,2893,2898.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 90, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 397, and the root of the Zadoff-Chu sequence has one or more of the following values: 6,7,30,39,65,78,89,101,125,130,145,148,160,166,171,181,195,202,216,226,231,237,249,252,267,272,296,308,319,332,358,

The length N _ZC of the Zadoff-Chu sequence has a value of 2969, and the root of the Zadoff-Chu sequence has one or more of the following values: 46,49,159,162,302,365,729,754,805,972,1005,1075,1178,1302,1459,1508, 1667,1791,1894,1964,1997,2164,2215,2240,2604,2667,2807,2810,2918,2921.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 96, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 307, and the root of the Zadoff-Chu sequence has one or more of the following values: 5,24,26,39,52,70,78,87, 90,104,110,134,137,140,151,156,167,170,173,197,203,217,220,229,237,255,268,281,283,302; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3011, and the root of the Zadoff-Chu sequence has one or more of the following values: 42,45,48,340,371,382,437,494,510,543,612,741,765,987,1019,1195,1333,1378,1481, 1528,1625,1633,1678,1992,2024,2468,2574,2671,2963,2966,2969.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 108, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence is 337, and the root of the Zadoff-Chu sequence is one or more of the following: 4, 5, 38, 57, 79, 83, 97, 105, 107, 111, 114, 120, 123, 127, 130, 134, 140, 166, 171, 197, 203, 207, 210, 214, 217, 223, 226, 230, 232, 240, 254,

The length N _ZC of the Zadoff-Chu sequence is 3023, and the root of the Zadoff-Chu sequence is one or more of the following: 39,41,43,219,383,426,438,613,745,870,993,1022,1218,1378,1490,1492, 1531,1533,1645,1805,1884,2029,2153,2278,2410,2585,2597,2804,2980,2982,2984.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 120, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 241, and the root of the Zadoff-Chu sequence has one or more of the following values: 3,14,17,33,34,45,61,66, 72,77,90,97,111,114,119,122,127,130,144,151,164,169,175,180,196,207,208,224,227,238; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3041, and the root of the Zadoff-Chu sequence has one or more of the following values: 34,37,231,237,273,280,440,513,616,750,769,863,892,1001,1026,1145,1209,1356,1501, 1538,1685,1896,2149,2167,2272,2291,2528,2761,2768,2810,3002,3005.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 144, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 269, and the root of the Zadoff-Chu sequence has one or more of the following values: 3,14,16,17,19,37,68,81, 82,83,93,94,107,122,133,136,147,162,175,176,186,187,188,201,232,250,252,253,255,266; or

The length N _ZC of the Zadoff-Chu sequence is 3061, and the root of the Zadoff-Chu sequence is one or more of the following: 29,31,233,238,344,362,366,442,542,740,757,791,1009,1030,1231,1514,1516,1546, 1697,1830,2030,2051,2304,2519,2619,2695,2699,2823,3030,3032.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 150, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 281, and the root of the Zadoff-Chu sequence has one or more of the following values: 3,42,43,49,59,60,71,84, 88,97,99,113,119,128,139,142,153,162,168,182,184,193,197,210,221,222,232,238,239,278; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3079, and the root of the Zadoff-Chu sequence has one or more of the following values: 28,31,254,381,406,476,622,762,777,857,927,1016,1036,1182,1212,1225,1315, 1365,1525,1555,1714,1764,2152,2222,2603,2673,2698,2825,3048,3051.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 162, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 223, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,9,13,15,17,23,25,29, 45,53,61,64,66,75,94,129,148,157,159,162,170,178,194,198,200,206,208,210,214,221; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3089, and the root of the Zadoff-Chu sequence has one or more of the following values: 25,26,27,28,29,90,204,212,306,312,437,510,612,765,1020,1039, 1155,1530,1531,1558,1559,1859,1934,2324,2579,2652,2877,2885,2999,3060,3061,3062,3063,3064.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 180, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 227, and the root of the Zadoff-Chu sequence has one or more of the following values: 2, 9, 15, 24, 25, 45, 69, 70, 75,80,84,94,97,103,108,119,124,130,133,143,147,152,157,158,182,202,203,212,218,225; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3119, and the root of the Zadoff-Chu sequence has one or more of the following values: 24,26,242,262,276,281,552,629,773,786,853,1031,1048,1093,1112,1363,1547, 1571,1756,1866,2007,2026,2087,2266,2567,2838,2843,2877,3093,3095.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 192, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 241, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,9,25,27,29,32,42,44, 46,71,74,76,81,96,101,103,138,140,145,160,165,167,170,195,197,199,209,212,214,216,232,239; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3137, and the root of the Zadoff-Chu sequence has one or more of the following values: 22,24,346,389,527,555,583,778,870,1053,1090,1250,1260,1341,1348, 1397,1556,1580,1877,1887,2047,2083,2267,2359,2463,2554,2582,2610,3113,3115.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 216, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 269, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,20,35,36,52,57,65,79, 86,89,99,108,115,124,128,141,145,154,161,170,180,183,190,204,212,217,233,234,249,267; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3181, and the root of the Zadoff-Chu sequence has one or more of the following values: 20,22,336,356,534,790,801,906,912,1053,1067,1128,1277,1360,1448, 1486,1580,1601,1673,1695,1733,1785,1904,2053,2114,2128,2275,2427,2825,3159.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 240, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 307, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,36,53,56,61,68,71,73, 79,80,82,88,103,109,113,121,125,126,135,141,166,172,181,182,186,194,198,204,219,225,227,228,234,236,239,246,251,254,271,305; or

The length N _ZC of the Zadoff-Chu sequence has a value of 3191, and the root of the Zadoff-Chu sequence has one or more of the following values: 18,20,234,303,436,453,535,562,634,642,738,752,1070,1199,1411,1562,1586,1605, 1629,1775,1780,1992,2121,2453,2549,2557,2656,2738,2888,2957,3172.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 270, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows Choose the implementation mode:

The length N _ZC of the Zadoff-Chu sequence has a value of 337, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,30,32,50,51,54,67,88, 90,94,95,96,99,113,142,148,150,151,153,154,163,164,173,174,183,184,186,187,189,195,224,238,241,242,243,247,249,270,283,286,287,305,307,335; or

The length N _ZC of the Zadoff-Chu sequence is 3217, and the root of the Zadoff-Chu sequence is one or more of the following: 16,200,246,400,457,462,488,640,647,713,758,800,900,967,1078,1342,1500,1600,1617,1717,1875, 2013, 2139, 2250, 2317, 2417, 2459, 2504, 2729, 2971, 3017, 3200.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 288, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3229, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 15,189,247,339,498,541,768,803,925,1071,1082,1152,1213,1295,1376,1437,1508, 1606,1622,1721,1853,2016,2077,2426,2461,2688,2731,2982,3040,3044.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 300, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3253, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 15,118,422,545,565,571,590,615,654,684,721,752,844,1079,1298,1354,1619,1634,2096,2174,2501, 2532,2569,2663,2682,2688,2708,2831,3135,3238.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 324, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3259, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 14,15,227,421,617,620,740,811,868,929,994,1004,1091,1165,1224,1480,1503,1622, 1637,1968,2035,2094,2265,2391,2448,2519,2639,2642,3032,3244,3245.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 360, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3299, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 13,138,219,365,368,457,552,601,657,828,892,1095,1104,1294,1400,1412,1420,1546,1879, 1887,1899,1916,1982,2005,2398,2407,2471,2747,3080,3161,3286.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 384, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3359, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 12,13,149,382,478,562,843,1009,1124,1248,1258,1341,1346,1461, 1473,1562,1673,1686,1797,1886,1898,2013,2018,2101,2111,2235,2350,2516,2767,2797,2881,3186,3210,3347.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 432, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3529, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 11,12,77,161,218,546,608,622,885,981,1010,1060,1180,1339,1603,1671, 1725,1759,1804,1858,1926,2190,2349,2427,2469,2519,2548,2907,2983,3311,3452,3517,3518.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 450, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3673, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 11,244,305,335,366,523,614,737,788,865,921,1021,1059,1143,1198,1203,1228,1502,1684, 1831,1842,1989,2445,2470,2530,2652,2885,2936,3059,3150,3307,3368,3429,3662.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 480, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows: Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 3919, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 11,186,214,279,314,367,499,535,541,558,602,697,734,1034,1177,1344,1570,1634,1820,1857,1954, 1965,2099,2241,2285,2349,2468,2742,3222,3361,3420,3640,3705,3733.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 486, and the length N _{ZC of} the Zadoff-Chu sequence and the values of the roots are as follows Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 4091, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 12,108,216,228,342,389,456,573,684,745,805,1167,1204,1226,1634,1740,1755,1759,1851, 1880,1910,1960,2181,2240,2457,2629,2945,3518,3578,3635,3749,3863,4079.

In an alternative technical solution for generating the reference signal, the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 540, and the length N _ZC and the root of the Zadoff-Chu sequence can be as follows Choose the implementation mode:

The value of the length of the Zadoff-Chu sequence is 4159, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 10,97,319,490,542,695,768,834,923,1037,1165,1190,1299,1390,1555,1561, 1739,1828,2074,2085,2212,2331,2604,2769,2817,2860,2969,3122,3236,3325,3464,3617,3669,3742,4148.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 576, the length N _ZC of the Zadoff-Chu sequence takes a value of 4241. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,208,235,416,423,470,485,624,663,705,816,830,846,908,958,1063,1326,1589,1816,2425,2652,2831,2993,3122,3178,3395,3536,3617,3756,3771,4006,4151.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 600, the length N _ZC of the Zadoff-Chu sequence is 4357, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,273,312,336,349,364,397,422,546,557,624,728,824,967,1002,1092,1449,1456,1618,1727,1821,2051,2536,2630,3051,3390,3800,3811,3960,4149,4175.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 648, the length N _ZC of the Zadoff-Chu sequence is 4507. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,229,251,281,386,419,475,502,562,796,835,859,1099,1213,1216,1315,1335,1499,1578,1635,1769,2081,2104,2157,2736,2869,2872,2929,3192,3291,3294,3411,3648,3711,3945,4005, 4032,4226.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 720, the length N _ZC of the Zadoff-Chu sequence takes a value of 4603. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,331,484,499,987,1063,1153,1246,1347,1380,1417,1572,1633,1725,1754,1974,2144,2305,2402,2459,2760,2849,3186,3223,3357,3540,3616,4104,4119, 4594.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 750, the length N _ZC of the Zadoff-Chu sequence is 4877. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,112,157,240,698,732,941,1217,1331,1464,1678,1780,1830,1875,2054,2120,2216,2397,2434,2588,2661,2757,2823,2977,3002,3097,3413,3660,4145,4637,4720, 4765,4868.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 768, the length N _ZC of the Zadoff-Chu sequence is 4957. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,51,193,285,291,373,382,647,855,977,1113,1119,1128,1351,1488,1771,2161,2474,2483,2796,3186,3431,3469,3542,3838,3980,4584,4666,4672,4906,4948.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 810, the length N _ZC of the Zadoff-Chu sequence takes a value of 5717. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,179,317,327,545,606,760,763,932,1159,1173,1264,1475,1505,1511,1632,1714,1730,1846,1909,2125,2825,3022,3639,3692,3871,4212,4453,4954,5390.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 864, the length N _ZC of the Zadoff-Chu sequence is 6163, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,126,147,227,293,303,343,454,686,696,740,769,906,949,1029,1298,1409,1756,1812,1850,1913,2270,2738,2967,3008,3037,3155,3196,3303,3492,4112,4250,5257,5342,5345,5394,5467,2 6016.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 900, the length N _ZC of the Zadoff-Chu sequence is 6599. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,357,366,549,619,629,661,683,697,732,777,1098,1178,1322,1647,1736,1759,1840,2203,2476,2739,2911,2969,3210,3493,3688,4863,4952,5476,5501,5867,5938,6050.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 960, the length N _ZC of the Zadoff-Chu sequence is 6781, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,183,283,538,566,603,782,807,884,948,1005,1044,1090,1117,1236,1379,1483,1508,1526,1744,1761,1833,1995,2257,2966,3052,3249,3586,3949,4132,4618,4810,5691,5833.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 972, the length N _ZC of the Zadoff-Chu sequence is 7019. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,146,169,219,292,584,635,639,703,876,916,1168,1238,1253,1579,1905,2397,2463,2506,2574,3061,3158,4022,4374,4555,5534,5631,5940,6103,6350.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1080, the length N of the Zadoff-Chu sequence N _ZC takes a value of 7523. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,97,271,313,485,545,556,593,691,717,813,837,875,975,1038,1350,1516,1635,1646,1963,2025,2119,2164,2178,2314,2511,2884,3563,4278,4743,5404,6007,6485,6710,6832,6840,6967, 7252,7426.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1152, the length N of the Zadoff-Chu sequence N _ZC is 7937, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,350,425,570,595,680,700,871,883,1013,1408,1444,1543,1810,1947,2082,2121,2335,2560,2715,3234,3403,3695,3780,3867,4070,4273,4773,5602,5816,5855,7342,7367, 7512.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1200, the length N _ZC of the Zadoff-Chu sequence is 8233, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,136,229,558,706,859,1100,1307,1340,1496,1504,1551,1589,1669,1703,2156,2444,2543,2635,2985,3234,3374,3466,3527,3580,3658,3670,3691,4653,4706, 6077,6218,6564,7675,8224.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1296, the length N _ZC of the Zadoff-Chu sequence is 9137, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,78,169,192,234,265,351,507,714,795,981,1114,1126,1219,1344,1370,1428,1627,1632,1687,1771,1782,1904,1916,2231,2612,2936,2863,3133,3607,4062,4822,4966,6893, 7355,7450,7524,7793,8799.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1350, the length N of the Zadoff-Chu sequence N _ZC is 9551. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,90,159,180,265,318,444,458,477,530,636,838,857,916,1090,1123,1942,2101,2571,2642,3332,3437,3466,4170,4186,4378,4537,4908,5014,5173,5337,5349,5365,6085,6627,6980,7046, 8915.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1440, the length N _ZC of the Zadoff-Chu sequence is 9749. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,122,173,224,568,672,697,826,928,1375,1394,1416,1721,1814,1918,2249,2419,2910,3087,3546,3863,4027,4051,4879,5086,5415,5633,8754,8923,9740.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1458, the length N _ZC of the Zadoff-Chu sequence is 10039. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,134,150,302,391,402,648,692,697,744,773,1481,1486,1634,1958,2059,2091,2114,2177,2232,2277,2512,3123,3705,4477,4940,5099,5624,5961,6462,7150,7270,7302,7925,8558, 9737,10029.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1500, the length N _ZC of the Zadoff-Chu sequence is 10301. The value of the root of the Zadoff-Chu sequence is one or more of the following:

9,98,147,343,488,491,528,553,674,683,727,1431,1473,1502,1557,1584,1627,1872,2759,3114,3692,4927,5585,6471,6864,8239,8378,8744,9347,9773,10291.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1536, the length N _ZC of the Zadoff-Chu sequence is 10781. The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,284,359,423,546,548,1106,1179,1213,1315,1694,1953,2053,2087,2378,2426,2459,2587,2788,3318,3342,3791,3833,4643,4756,5492,6948,7327,7370,7430, 7463.

In an alternative technical solution for generating the reference signal, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1620, the length N _ZC of the Zadoff-Chu sequence is 11369, so The value of the root of the Zadoff-Chu sequence is one or more of the following:

10,276,314,362,433,616,707,800,824,992,1047,1062,1125,1236,1350,1366,1664,2229,2700,4466,4602,4619,4827,5035,5080,6495,6799,7200,7434,7576,8969,9102,9136.

In this embodiment, for the Zadoff-Chu sequence, the length N _ZC and the root set Q where the root is located correspond to the length M of the reference signal sequence, or to the length set M _{all of the} reference signal sequence. Wherein M _all the number of elements is greater than 1, that is to say at least two different lengths of the reference signal sequences corresponding to the length N _ZC root and root set located Q.

In an alternative technical solution for generating the reference signal, the length of the reference signal sequence generated based on the Zadoff-Chu sequence belongs to the M set M _all , where M _all is [1080,1152], and the length of the Zadoff-Chu sequence The values of the length N _ZC and the root have the following optional implementation modes:

The length N _ZC of the Zadoff-Chu sequence has a value of 8597, and the root of the Zadoff-Chu sequence has one or more of the following values: 11,423,538,768,800,835,877,1005,1041,1076,1147,1220,1285,1376, 1431,1637,2814,2862,3268,3386,3929,4304,5014,5735,6149,6439,6754,7166,7239,7643.

In an alternative technical solution for generating the reference signal, the length of the reference signal sequence generated based on the Zadoff-Chu sequence belongs to the M set M _all , where M _all is [1200, 1296, 1350], and the Zadoff-Chu The sequence length N _ZC and the value of the root have the following optional implementation modes:

The length N _ZC of the Zadoff-Chu sequence has a value of 8677, and the root of the Zadoff-Chu sequence has one or more of the following values: 125,392,393,511,818,963,2549,2767,3306,3654,3853,3945,3987, 4004,4103,4260,4417,4574,4673,4690,4732,4824,5023,5371,5910,6128,7714,7859,8166,8284,8285,8552.

In an alternative technical solution for generating the reference signal, the length of the reference signal sequence generated based on the Zadoff-Chu sequence belongs to the M set M _all , and M _all is [1440, 1458, 1500, 1536, 1620]. The length N _{ZC of the} Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 9551, and the root of the Zadoff-Chu sequence has one or more of the following values: 103,216,478,734,956,1086,1195,1302,1912,2046,2215,2390, 2604,3168,3830,4178,4248,4505,5046,5303,5373,5721,6383,6947,7161,7336,7505,7639,8249,8356,8465,8595,8817,9073,9335,9448.

In an optional technical solution, the element values of the Zadoff-Chu sequence conform to the following equation:

Where m is the element number of the Zadoff-Chu sequence, 0≤m≤N _zc -1, x _q (m) is the m-th element of the Zadoff-Chu sequence, and q is the Zadoff-Chu sequence Root, N _zc is the length of the Zadoff-Chu sequence, is an odd number, and j is an imaginary unit.

Where m is the element number of the Zadoff-Chu sequence, 0≤m≤N _zc -1, x _q (m) is the m-th element of the Zadoff-Chu sequence, and q is the Zadoff-Chu sequence Root, N _zc is the length of the Zadoff-Chu sequence, is an even number, and j is an imaginary number unit.

In a seventh aspect, a wireless communication device is provided. The wireless communication device may be a terminal (or a chip or a system on chip provided in the terminal). The wireless communication device includes:

A processor, configured to execute program code, so that the wireless communication device (or terminal) executes the method described in the first aspect or the fifth aspect.

Optionally, the wireless communication device further includes a memory connected to the processor, where the program code is stored in the memory, and the program code is executed by the processor to cause the wireless communication device (or terminal) to execute The method according to the first aspect or the fifth aspect.

In an eighth aspect, a wireless communication device is provided. The wireless communication device may be a base station (or a chip or a system-on-chip installed in the base station). The wireless communication device includes:

The processor is configured to execute the program code, so that the wireless communication device (or terminal) executes the method described in the second aspect or the fifth aspect.

Optionally, the wireless communication device further includes a memory connected to the processor, where the program code is stored in the memory, and the program code is executed by the processor to cause the wireless communication device (or base station) to execute The method described in the second or fifth aspect above.

In a ninth aspect, a wireless communication system is provided, including: a base station, and any one of the wireless communication devices in the third aspect, sixth aspect, seventh aspect, and various optional technical solutions.

In a tenth aspect, a wireless communication system is provided, including: a terminal, and any one of the wireless communication devices in the fourth aspect, sixth aspect, eighth aspect, and various optional technical solutions.

According to an eleventh aspect, a computer-readable storage medium is provided, in which a program code is stored, and when the program code is executed by a processor, the first aspect, the second aspect, and the first aspect are realized Any one of the five aspects and various optional technical solutions.

According to a twelfth aspect, a computer program product is provided. When the program code included in the computer program product is executed by a processor, the first aspect, the second aspect, the fifth aspect, and various optional technical solutions are implemented Any method.

It should be understood that the technical solutions of the seventh to twelfth aspects are the same as or correspond to the technical solutions of the first to sixth aspects. Therefore, for the beneficial effects of the seventh to twelfth aspects and various optional technical solutions, reference may be made to the description of the beneficial effects of the first to sixth aspects and the various optional technical solutions, which will not be repeated here.

BRIEF DESCRIPTION

1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention;

2 is a schematic diagram of a principle of a modulation scheme according to an embodiment of the present invention;

3 is a schematic flowchart of a wireless communication method according to an embodiment of the present invention;

4 is a schematic diagram of a reference signal generation process according to an embodiment of the present invention;

5 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention;

6 is a schematic structural diagram of another wireless communication device according to an embodiment of the present invention;

7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

8 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 9 is a schematic performance diagram of an embodiment of the present invention.

It should be understood that in the above structural schematic diagram, the size and shape of each module are for reference only, and should not constitute the only interpretation of the embodiments of the present invention. The relative positions between the modules presented in the structural schematic diagram are only schematic representations of the structural associations between the modules, and do not limit the physical connection manner of the embodiments of the present invention.

detailed description

The technical solution provided by the present application will be further described below with reference to the drawings and embodiments. It should be understood that the system architecture and business scenarios introduced in this application are mainly for illustrating possible implementations of the technical solution of this application, and should not be interpreted as the only limitation on the technical solution of this application. It can be known by those of ordinary skill in the art that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by this application are also applicable to similar technical problems.

In wireless communication systems, communication devices can be divided into devices that provide network services and devices that use network services. The communication devices that provide network services are usually those that form a network, which may be referred to as network equipment (network equipment), or network elements (network elements). Network equipment generally belongs to network manufacturers such as operators (such as China Mobile, Vodafone) or infrastructure providers (such as Iron Tower), and these network manufacturers operate and maintain them. Communication devices that use network services are usually located at the edge of the network, which may be referred to as terminals. Terminals can establish connections with network equipment and use services provided by network equipment, but they do not necessarily belong to these network manufacturers. The terminal is generally in close contact with the user, and is sometimes referred to as user equipment (UE), or subscriber unit (SU).

Taking a mobile communication system as an example, a typical example of a terminal is a mobile phone. A mobile phone generally belongs to a user and can access a mobile communication network and use the mobile communication service provided by the network. The mobile communication network can be further divided into a radio access network (radio access network, RAN) and a core network (core network, CN). Correspondingly, network equipment can be further divided into RAN equipment and CN equipment. Among them, the RAN equipment is mainly responsible for wireless-related functions. Typical examples are the general node B (generation Node B, gNB) in the 5G system, and the evolutional Node B (eNB or eNodeB) of the 4G system. The CN equipment is mainly responsible for the overall functions of the network, and is generally divided into user plane (UP) equipment and control plane (control) equipment. Among them, the user plane mainly involves the transmission of user data. These user data are generally considered to be the payload of communication services, such as text, voice, video, and other data content that meet user needs. In this application, user plane data or user data is recorded as business data. The control plane mainly involves the transmission of control signaling. These control signaling is an auxiliary overhead for business data transmission, but it is essential to ensure the efficiency and reliability of business data transmission.

In this application, for ease of expression, the following will use a base station (base station) and a terminal (terminal) as examples to describe in detail the wireless communication method, device, and system of the embodiments of the present invention. Among them, the base station refers to the network equipment in the wireless communication system, especially the RAN equipment. In addition to the UE or SU in the wireless communication system, the terminal also includes a communication device having wireless access capability similar to the UE or SU, such as a network device such as a relay node (RN). Generally, according to the direction of data transmission on the communication link, the communication link from the base station to the terminal is called a downlink (downlink, DL); otherwise, the communication link from the terminal to the base station is called an uplink (uplink, UL ).

Logically, the base station can be understood as a scheduling entity (scheduling entity), and the terminal can be understood as a subordinate entity (subordinate entity). The scheduling entity is responsible for scheduling control of business data transmission, and the slave entity performs business data transmission based on the control of the scheduling entity. For example, the base station sends an uplink scheduling grant to the terminal, and the terminal sends uplink data transmission to the base station based on the uplink scheduling grant.

In physical form, a base station may include but is not limited to a macro base station (macro base station), a micro base station (micro base station), a transmission and reception point (transmission Reception Point (TRP), a baseband unit (baseband unit, BBU), and a remote radio unit (remoteradiounit). Micro base stations are sometimes called small cells. Terminals can include, but are not limited to, mobile phones, tablet computers, laptop computers, wearable devices (smart watches, smart bracelets, smart helmets, smart glasses, etc.), and others with wireless access Capable communication devices, such as various IoT devices, including smart home devices (smart meters, smart home appliances, etc.), smart vehicles, etc.

FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present invention. Figure 1 shows a base station (denoted as BS) and a terminal (denoted as T). The uplink and downlink between the base station and the terminal are referred to as UL and DL, respectively. It should be understood that although one base station and one terminal are shown in FIG. 1, the wireless communication system may also include other numbers of base stations and terminals, and may also include other network equipment.

It should be understood that the technical solution provided by this application does not limit the type of wireless communication system. Taking the mobile communication system as an example, the technical solution provided by the present application can be applied to both a 5G mobile communication system and its evolution system, as well as a 4G long term evolution (LTE) system and its evolution system.

In the embodiments of the present invention, the terminal and the base station of the wireless communication system support one or more radio access technologies (RAT), such as 5G and its evolved system RAT, and / or, 4G and its evolved system RAT. Specifically, both the terminal and the base station support air interface parameters, coding schemes, and modulation schemes of the RAT. Among them, the air interface parameter is a parameter used to describe the characteristics of the air interface. In English, air interface parameters are sometimes called numerology. Air interface parameters usually include subcarrier spacing (SC), cyclic prefix (CP) and other parameters.

In addition, the terminal and the base station are also aware of various predefined configurations of the wireless communication system. The predefined configurations of these systems can be used as part of the standard protocol of the wireless communication system, and can also be determined through the interaction between the terminal and the base station. Part of the content of the standard protocol of the wireless communication system may be pre-stored in the memory of the terminal and the base station, and / or, embodied as a hardware circuit or software code of the terminal and the base station.

The modulation scheme can be understood as the mapping between data information and modulation symbols. The difference in the values of parameters such as the phase, amplitude, or frequency of the modulation symbol can reflect the difference in data information. Without causing ambiguity, the modulation scheme in this application includes the two reciprocal operations of modulation and demodulation. Among them, the process of setting parameters such as phase, amplitude, or frequency of modulation symbols based on data information is called modulation operation. Correspondingly, the process of obtaining data information according to the values of parameters such as the phase or amplitude of the modulation symbol is called a demodulation operation.

For example, phase shift keying (PSK) is a modulation scheme that transfers data information based on the phase of the modulation symbol. Among them, the two-level PSK (binary PSK, BPSK) is a binary form of PSK, and quadrature phase shift keying (quadrature PSK, QPSK) is a multi-gram form of PSK. BPSK usually uses two phases separated by π (or 180 degrees) to convey information, also known as 2PSK or 2-PSK. In this article, π / 2 BPSK, BPSK, and QPSK can refer to π / 2 BPSK modulation, BPSK modulation, and QPSK modulation, respectively.

FIG. 2 is a schematic diagram of the principle of a modulation scheme according to an embodiment of the present invention. Among them, FIG. 2 (a) shows a constellation diagram of a modulation symbol of BPSK. Among them, the abscissa I represents the in-phase component (inphase) component, the ordinate Q represents the quadrature component (quadrature) component, and the solid dots in the constellation diagram represent a modulation symbol. As shown in Figure 2 (a), each BPSK modulation symbol has two possible phase values, so each modulation symbol can convey 1 bit of information. Similarly, QPSK generally uses four phases with an interval of π / 2 (or 90 degrees) to convey information, also known as 4PSK, 4-PSK, or 4-QAM (quadrature amplitude modulation, quadrature amplitude modulation). Fig. 2 (b) shows a constellation diagram of a modulation symbol of QPSK. As shown in Figure 2 (b), each QPSK modulation symbol has four possible phase values, so each modulation symbol can convey 2 bits of information.

π / 2 BPSK is different from BPSK and QPSK. On the whole, π / 2 BPSK can use four phases with an interval of π / 2 to transfer information. However, from a micro perspective, each modulation symbol uses two phases separated by π to convey information. In addition, the phase difference of the modulation symbols mapped to two adjacent bits is π / 2. For example, suppose that the set of available phases of π / 2 BPSK is {0, π / 2, π, 3π / 2}. For the odd-numbered bits, two phases of 0 or π can be used, as shown in FIG. 2 (c). For even-numbered bits, two phases of π / 2 or 3π / 2 can be used, as shown in Fig. 2 (d). By comparing Fig. 2 (c) and Fig. 2 (d), it is easy to see that the phase difference between two adjacent modulation symbols is π / 2. There are two possible phase values for each modulation symbol, so one bit of information can be transferred.

In the embodiment of the present invention, for uplink data transmission, both the terminal and the base station support multiple modulation schemes including π / 2BPSK. It should be understood that the uplink data transmission does not limit the data content carried. The uplink data transmission can be used to carry service data or control signaling. When the uplink data transmission is used to carry business data, it can be understood as the 5G NR physical layer data channel or 4G LTE PUSCH; when the uplink data transmission is used to carry business data, it can be understood as the 5G NR physical layer Control channel or PUCCH in 4G LTE.

In the embodiment of the present invention, the terminal and the base station also support other modulation schemes than π / 2BPSK. For example, the other modulation scheme may be one or more modulation schemes among BPSK, QPSK, 16QAM, 64QAM, 256QAM, and 1024QAM. Moreover, the modulation schemes supported by the terminal and the base station are not limited to the above-mentioned example modulation schemes, and may also include various modifications based on the above-mentioned example modulation schemes, such as offset quadrature phase shift keying (offset QPSK, OQPSK) , Differential phase shift keying (differential PSK, DPSK), etc.

The data sent by the terminal or base station in the embodiment of the present invention is a single carrier frequency division multiple access (SC-FDMA) modulated by π / 2 binary phase shift keying (BPSK) Waveform.

Specifically, the SC-FDMA waveform after π / 2 BPSK modulation may be π / 2 BPSK modulation of the bitstream data to be transmitted to obtain π / 2 BPSK modulation data, and then Fourier π / 2 BPSK modulation data Transform, inverse Fourier transform and other operations to send data in the time domain.

Alternatively, the SC-FDMA waveform after π / 2 BPSK modulation may be π / 2 BPSK modulation of the bit stream data to be transmitted to obtain π / 2 BPSK modulation data, and then Fourier transform the π / 2 BPSK modulation data , Filtering, inverse Fourier transform and other operations to send data in the time domain. The filtering may be time domain filtering or frequency domain filtering.

Filtering the data can reduce the peak-to-average power ratio of the waveform (Peak to Average Power Ratio, PAPR).

The embodiment of the present invention provides the base sequence configuration of the reference signal sequence for the π / 2 BPSK modulation scheme, respectively. The base sequence of the reference signal sequence refers to a basic sequence used to generate the reference signal sequence. The basic sequence configuration is recorded as the base sequence configuration. The configuration of the base sequence may include the type, generation formula, parameter value of the base sequence, or the element value of the base sequence.

Specifically, in the wireless communication system of the embodiment of the present invention, the uplink data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK; the reference signal sequence corresponding to π / 2 BPSK The base sequence configuration is selected to generate the reference signal corresponding to π / 2 BPSK. The base station receives the reference signal corresponding to π / 2 BPSK in order to estimate the channel characteristics of the uplink data transmission and use the reference signal to perform uplink data demodulation. For comparison, the existing LTE system does not first support π / 2 BPSK. If the reference signal of the LTE system is simply used, it may cause the communication system to fail to work normally or cause the communication performance of the system to deteriorate. Secondly, in the technical specifications of the 3rd generation partnership project (3GPP), the base sequence configuration of the generated reference signal sequence is divided into two categories according to the length of the base sequence. When the length of the base sequence is greater than or equal to

At this time, the base sequence is an extended sequence based on the Zadoff-Chu sequence. At this time, in the base sequence configuration, the value of the length of the Zadoff-Chu sequence is the maximum prime number that is less than or equal to the length of the reference signal sequence. When the length of the base sequence is less than

At this time, the base sequence is a sequence based on QPSK. At this time, in the configuration of the base sequence, the value of the phase parameter of the QPSK sequence is predetermined in advance by the 3GPP technical specifications. among them,

It is the number of subcarriers (SC) contained in one resource block (RB) in the LTE system. The value is usually 12. For the detailed process of generating reference signals according to the base sequence configuration, please refer to the relevant technical specifications of 3GPP, such as the content of reference signals in Section 5.5 of 36.211 version 11.4.0

For example, for the uplink data with the allocated bandwidth of 4RB (48 subcarriers), a Zadoff-Chu sequence with a length of less than 48 and a maximum prime number of 47 is used, and a reference signal sequence with a length of 48 is obtained by cyclic expansion of 1 bit. The number of available roots (q) is 46, and the PAPR of the reference signal generated based on the reference signal sequence is relatively high, basically between 2dB and 7dB, and has a relatively large distance compared to the PAPR of the data.

Compared with the prior art, the wireless communication system of the embodiment of the present invention can achieve that the PAPR of the uplink data is equal to or close to the PAPR of the reference signal, and both are very low. The output power after PA is relatively high, which helps to improve wireless communication Performance.

In an optional embodiment, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK may be stored or set in the terminal and the base station. For example, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK is stored or set in the terminal and the base station during the manufacturing process of the terminal and the base station, or stored or set in the terminal and the base station through software upgrade after leaving the factory in. In addition, in another optional embodiment, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK in the terminal can also be set or updated through control signaling of the base station during the use of the terminal. The base sequence configuration of the reference signal sequence is pre-stored or set in the terminal, which is beneficial to save transmission overhead. The base sequence configuration of the reference signal sequence is set or updated by the control signaling of the base station, which is beneficial to improve the flexibility of the base sequence configuration.

In the embodiments of the present invention, demodulation reference signals are used as an example for description. The embodiments of the present invention may also be applicable to other types of reference signals, such as sounding reference signals or positioning reference signals.

Without loss of generality, the following uses demodulation reference signals as an example to further introduce the solution of the embodiment of the present invention.

For example, in the wireless communication system of the embodiment of the present invention, the terminal is used to determine the base sequence configuration of the reference signal sequence corresponding to the modulation scheme of the uplink data transmission, generate a reference signal according to the determined base sequence configuration of the reference signal sequence, and follow the The reference signal is sent together with the upstream data. The base station is used to receive the reference signal associated with the uplink data transmission, and determine the base sequence configuration of the reference signal sequence corresponding to the modulation scheme of the uplink data transmission, so as to estimate the channel characteristics of the uplink data transmission, and use the reference signal pair The upstream data is demodulated.

On the basis of the wireless communication system shown in FIG. 1, the embodiment of the present invention will further describe the wireless communication method between the terminal and the base station in conjunction with FIG. 3. FIG. 3 is a schematic flowchart of a wireless communication method according to an embodiment of the present invention. The direction of the horizontal connection between the base station and the terminal indicates the transmission direction, and the text on the horizontal connection indicates the schematic name of the transmitted information or signal. The text in the box indicates the schematic name of the internal operation of the terminal or base station.

As shown in FIG. 3, the wireless communication method may include the following steps:

Step S1: The base station sends uplink data transmission indication information; accordingly, the terminal receives the uplink data transmission indication information. Optionally, the indication information of the uplink data transmission is used to indicate the modulation scheme of the uplink data transmission. In FIG. 3, the arrow of the horizontal line in step S1 is directed from the base station to the terminal, and is used to indicate the downlink direction.

Step S2. The terminal determines the base sequence configuration of the reference signal sequence corresponding to the uplink data, and generates a reference signal according to the determined base sequence configuration of the reference signal sequence. In FIG. 3, step S2 is abbreviated as a block for determining the configuration of the base sequence. Optionally, the base sequence configuration of the reference signal sequence corresponds to the modulation scheme of uplink data transmission.

Step S3: The terminal sends a reference signal; accordingly, the base station receives the reference signal associated with the uplink data transmission. In FIG. 3, the arrow of the horizontal line in step S3 is directed from the terminal to the base station, and is used to indicate the uplink direction. Step S3 is abbreviated as the reference signal & data signal transmitted in the upstream direction. Among them, the transmission of the data signal is optional.

Step S4. The base station determines the base sequence configuration of the reference signal sequence corresponding to the uplink data, and uses the reference signal to demodulate the uplink data.

In FIG. 3, step S4 is abbreviated as a block of channel estimation & data demodulation. Among them, the step of data demodulation is optional. It should be understood that in order to estimate the channel characteristics of the uplink data transmission, the base station also needs to determine the base sequence configuration of the reference signal sequence corresponding to the modulation scheme of the uplink data transmission and the corresponding reference signal sequence.

Optionally, in the wireless communication method shown in FIG. 3, the modulation scheme for uplink data transmission is one of multiple modulation schemes supported by the terminal, and the multiple modulation schemes include at least π / 2 binary Phase shift keying BPSK modulation;

Wherein, the base sequence configuration of the reference signal sequence corresponding to the π / 2 BPSK modulation is different from the base sequence configuration of the reference signal sequence corresponding to other modulation schemes in the multiple modulation schemes.

Based on the base sequence configuration of the reference signal sequence corresponding to π / 2 BPSK modulation, the terminal can generate the reference signal sequence and reference signal corresponding to the modulation scheme for uplink data transmission, and the base station can also determine the reference corresponding to the modulation scheme for uplink data transmission. Signal sequence to estimate the channel characteristics of uplink data transmission, and use the reference signal to demodulate the uplink data. In an optional embodiment, the peak-to-average power ratio PAPR of the reference signal generated according to the base sequence configuration of the reference signal sequence corresponding to the π / 2 BPSK modulation and the difference of the PAPR of the uplink data The absolute value is zero, or less than the preset value. Therefore, using the wireless communication method shown in FIG. 3, the peak-to-average power ratio PAPR of the reference signal generated according to the base sequence configuration of the reference signal sequence corresponding to the π / 2BPSK modulation is different from the PAPR of the uplink data The absolute value of the value is zero, or less than the preset value. With this optional technical solution, the PAPR of the upstream data is equal to or close to the PAPR of the reference signal, which is very low. The reference signal will not become a limit to the output power of the nonlinear PA Bottleneck, the output power of the transmitted data and the transmitted reference signal after PA is relatively high, thereby improving the communication performance of the system.

The solutions of the embodiments of the present invention will be further described below in conjunction with optional embodiments. It should be understood that the content of the following optional embodiments is mainly used to supplement some optional implementations of the embodiments of the present invention, and the scope of the embodiments of the present invention should not be limited to these optional embodiments. It should be understood that these optional embodiments can be arbitrarily combined, and can be combined with the above wireless communication system and wireless communication method to form the content of the embodiments of the present invention.

It should be understood that in this application, "and / or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example, "A, and / or, B", may indicate: A exists alone, and A and B, there are three cases of B alone. The character "/" generally indicates that the related object is a "or" relationship.

Among them, Embodiment 1 will introduce some optional implementations of the wireless communication method shown in FIG. 3 as a whole. Based on Embodiment 1, more detailed examples will be provided in the subsequent optional embodiments, especially regarding the base sequence configuration of the reference signal sequence corresponding to π / 2 BPSK modulation and other modulation schemes, and the corresponding reference signal Examples of sequences.

Example 1

In step S1 of the wireless communication method described in FIG. 3, the indication information of the uplink data transmission may be carried in the downlink control plane message. The indication information of the uplink data transmission may be embodied as one or more information elements (IE) in the downlink control plane message. IE can be understood as a predefined field in the downlink control plane message. The possible values and meanings of this field are predetermined by the standard protocol. In addition, the indication information can be used to indicate other information of uplink data transmission, such as a coding scheme, in addition to the modulation scheme of uplink data transmission. For example, the indication information includes an index of a modulation and coding scheme (MCS), which jointly indicates the modulation scheme and coding scheme of uplink data transmission.

It should be understood that although in step S1, the terminal determines the modulation scheme for uplink data transmission according to the indication information. However, for some specific uplink data transmissions, the terminal and the base station may also determine the modulation scheme of these specific uplink data transmissions according to the predefined configuration of the system. At this time, step S1 is an optional step.

In an optional implementation manner, the base station informs the terminal of the configuration of uplink data transmission through the downlink control plane message. The downlink control plane message includes downlink control information (downlink control information, DCI), radio resource control (radio resource control (RRC) message, etc. The terminal receives the downlink control plane message and thus knows the configuration of the uplink data transmission. In the embodiments of the present invention, the configuration of uplink data transmission may include: resources used for uplink data transmission, coding scheme, modulation scheme, and the like.

Thereafter, in step S3, the terminal may send an uplink data signal and a reference signal according to the configuration of uplink data transmission. The uplink data signal and the reference signal may be embodied as a baseband signal or a radio frequency signal inside the terminal; on the air interface between the terminal and the base station, it may be embodied as an electromagnetic wave signal. It should be understood that in the case where no ambiguity is caused in this application, uplink data transmission and uplink data signals are sometimes used interchangeably.

In step S2 and step S4, the terminal and the base station respectively need to determine the base sequence configuration of the reference signal sequence corresponding to the modulation scheme of the uplink data transmission in order to generate the corresponding reference signal (terminal) or estimate the channel characteristics of the uplink data transmission (base station) .

Specifically, when the modulation scheme is to use π / 2 BPSK modulation to modulate the bit data to be transmitted, the terminal and the base station respectively determine the base sequence configuration of the reference signal sequence corresponding to π / 2 BPSK.

Thereafter, the terminal generates a corresponding reference signal sequence and reference signal according to the determined base sequence configuration of the reference signal sequence. The base station further determines the reference signal sequence expected to be received according to the determined base sequence configuration of the reference signal sequence. The base station compares the reference signal sequence expected to be received with the reference signal sequence in the actually received reference signal, thereby estimating the channel characteristics of the uplink data transmission. Finally, the base station can demodulate the uplink data transmission according to the estimated channel characteristics.

This embodiment will further describe the generation process of the reference signal sequence and the reference signal in the embodiment of the present invention with reference to FIG. 4. FIG. 4 is a schematic diagram of a reference signal generation process according to an embodiment of the present invention.

The reference signal of a symbol in the time domain (referred to as the time domain reference signal) can be obtained from the reference signal sequence of length M. Specifically, as shown in FIG. 4, the reference signal sequence may undergo phase rotation, filtering, resource mapping, inverse Fourier transform, and adding cyclic prefix operations to obtain a symbol time-domain reference signal. The filtering may be time domain filtering or frequency domain filtering.

As an example, the embodiment of the present invention may obtain the time domain reference signal in the following two ways, but the method for obtaining the time domain reference signal in the embodiment of the present invention is not limited thereto.

method one:

When the filtering is frequency domain filtering, the reference signal sequence is sequentially subjected to phase rotation, frequency domain filtering, resource mapping, inverse Fourier transform, and adding a cyclic prefix to obtain a symbol time domain reference signal.

Specifically, the description of each operation is as follows.

The reference signal sequence r _{q of} length M undergoes phase rotation to obtain rotation data r _{phase of} length M. Specifically, it can be expressed by the following formula:

r _phase (m) = r _q (m) · e ^{j · α · m} , m = 0,1,2, ..., M-1

Wherein, r _phase (m) is the m-th value in r _phase (ie, the m-th data); α is the phase rotation factor, which can be a pre-configured value, or the base station can notify the terminal through signaling. Specially, the value of α may also be 0, and at this time, the rotation data is consistent with the reference signal sequence, that is, no phase rotation is required.

The rotation data r _{phase of} length M is subjected to frequency domain filtering to obtain the filter data r _{filter of} length M. Specifically, the mth data r _phase (m) in the rotation data r _phase is multiplied by the frequency domain filter coefficient S _filter (m) to obtain the mth data r _filter (m) of the r _filter in the filtered data; where S _filter (m) is the m-th coefficient in the frequency domain filter S _filter of length M. It can be expressed by the following formula:

r _filter (m) = r _phase (m) · S _filter (m), m = 0,1,2, ..., M-1

Frequency domain filter S _filter can be the frequency domain form of commonly used filters, such as square root raised cosine (SRRC) filter, root raised cosine (Root Raised Cosine, RRC) filter, etc. Form, the embodiments of the present invention are not limited to this.

In one implementation, when the filter coefficients are all 1, the filter data r _filter and the rotation data r _phase are consistent, and no frequency domain filtering is required at this time.

Then, perform resource mapping on the filter data r _{filter of} length M to obtain the map data r _{map of} length N; where N is a positive integer and N ≥ M; it can be a pre-configured fixed value, for example, N = 2048; it can also be The terminal equipment is notified by the base station equipment through signaling.

Specifically, the expression of r _map can be expressed as:

n = 0,1,2, ..., N-1, m = 0,1,2, ..., M-1

Among them, I is the location of resource mapping, including M values; I (m) is the mth value in I. Exemplarily, the filtered data r _filter may be continuously mapped (or called a continuous arrangement) on the mapping data r _{map of} length N; for example, I = m + m _{map, offset} , where m _{map, offset} is the offset value of the mapping. The filtered data r _filter may also be mapped at equal intervals K (or called arranged at equal intervals K) in the mapping data r _{map of} length N; for example, I = m · K + m _{map, offset} . The filtered data r _filter may also be mapped in the mapped data r _map in other ways, and the embodiments of the present invention are not limited thereto.

Then, the map data r _{map of} length N is subjected to inverse fast fourier transformation (IFFT) and a cyclic prefix is added to obtain a symbol time-domain reference signal. The time-domain reference signal can be expressed as s. For inverse Fourier transform and adding cyclic prefix, a possible implementation can be expressed as follows:

Where s (t) is the data at the t-th time in s, t _start ≤ t <t _end , and t _start , t and t _end are real numbers. Exemplary t _end -t _start = (N + N _cp ) · T _s ; for example: t _start = 0, t _end = (N + N _cp ) · T _s ; N _cp · T _s is the length of time of the cyclic prefix . Δf is the subcarrier interval, for example, Δf = 1 / (N · T _s ). T _s is a time unit factor, which may be pre-configured, or may be notified by the base station to the terminal through signaling. Optionally, T _s may be a time interval between two adjacent discrete data in discrete data obtained by discretely sampling continuous time-domain output data s (t). t _offset is a delay offset, and the value of t _offset may be pre-configured, for example, t _offset = -N _cp · T _s ; the value of t _offset may also be notified by the base station to the terminal through signaling.

among them

It can be considered that the inverse Fourier transform adjusts the coefficient of the output data power,

Is a real number eg

k _{re, offset} is the frequency domain offset factor, _and the value of k _{re, offset} may be pre-configured, for example, k _{re, offset} = 1/2. The values of k _{re and offset} may also be notified by the base station to the terminal through signaling.

It can be known that if t _start = 0, t _end = (N + N _cp ) · T _s , t _offset = -N _cp · T _s , the time length of the time-domain reference signal s is (N + N _cp ) · T _s , Where the data of the initial N _cp · T _s time length can be regarded as the cyclic prefix of the time-domain reference signal s. The data with a length of N · T _s remaining after removing the data of the initial N _cp · T _s time length can be regarded as a time-domain reference signal when there is no cyclic prefix.

The time-domain reference signal s (t) obtained by the above expression is a continuous form of time. It can be known that, assuming t _start = 0, t _end = (N + N _cp ) · T _s , t _offset = -N _cp · T _s ,

When discrete sampling is performed on t, after the continuous representation of the inverse Fourier transform is discretely sampled, the following discrete representation can be obtained:

Time-domain reference signal in the above discrete representation

Contains N + N _cp data, where the first N _cp data can be regarded as a cyclic prefix.

Method two

The second way is basically similar to the first way. The frequency domain filtering in the first way is replaced with time domain filtering, that is, the reference signal sequence is sequentially subjected to phase rotation, resource mapping, inverse Fourier transform, time domain filtering, and cyclic prefix. A time reference signal of a symbol is obtained.

In the above manner 1 and manner 2, the method for the base station and the terminal to generate the corresponding reference signal sequence according to the base sequence may refer to standard mathematical operations. These mathematical operations include but are not limited to cyclic shift and orthogonalization. The specific operation types and parameters depend on the definition of the system, which is not specifically limited in the embodiments of the present invention.

Example 2

In this embodiment, the base sequence configuration of the reference signal sequence corresponding to π / 2BPSK includes the length of the Zadoff-Chu sequence and the value of the root. For details, refer to the introduction below. The base sequence configuration of the reference signal sequence corresponding to other modulation schemes can follow the base sequence configuration in the existing LTE system.

Zadoff-Chu sequence is a complex-valued mathematical sequence that satisfies the characteristics of constant amplitude zero autocorrelation (CAZAC). Among them, the amplitudes of the elements in the Zadoff-Chu sequence are the same, which helps to generate a wireless signal with a lower peak-to-average power ratio (PAPR). The correlation function between Zadoff-Chu sequence and its circularly shifted version is a delta function. The peak position of the delta function depends on the magnitude of the cyclic shift. From an identical Zadoff-Chu sequence, through different cyclic shifts, multiple orthogonal sequences can be obtained. The Zadoff-Chu sequence that has not undergone cyclic shift is recorded as the root sequence.

Specifically, a Zadoff-Chu sequence x _{q of} a root q can be expressed as follows:

Where j is the imaginary unit, q is the root of the Zadoff-Chu sequence, q ∈ {1, ..., N _ZC -1}, n is the element number of the Zadoff-Chu sequence, n = 0,1, ... , N _ZC -1, N _zc is the length of the Zadoff-Chu sequence, and l is an integer.

Without loss of generality, this embodiment will take l = 0 as an example for description, and it should be understood that l may have other values. In this embodiment, the element values of the Zadoff-Chu sequence conform to the following equation:

Or, the element values of the Zadoff-Chu sequence conform to the following equation:

It should be noted that the element values of the Zadoff-Chu sequence can also be implemented by other equations or formulas, which are only examples here.

The root q of the aforementioned Zadoff-Chu sequence is an element in the root set Q. Where Q (u) is the uth value in the root set Q, and the value range of u is an integer from 0 to M _root -1. At the same time, any two elements (ie any two values) in the root set Q are inconsistent. That is, the root set Q contains M _root values, and M _root is a positive integer.

It can be known that a Zadoff-Chu sequence can be determined according to the length N _ZC and the root q. Since the root q is an element in the root set Q; therefore, M _root Zadoff-Chu sequences can be determined according to the length N _ZC and the root set Q. When the terminal device needs to generate a reference signal sequence of length M, a Zadoff-Chu sequence of length N _ZC can be selected from the M _root Zadoff-Chu sequences.

Exemplarily, one possible way is that the terminal device determines the value of the index u of the root set Q, and then uses Q (u) as the value of the root of the Zadoff-Chu sequence (that is, q = Q (u)). The length N _ZC and the root value Q (u) can determine the Zadoff-Chu sequence. Among them, the value of u may be pre-configured; it may also be determined by the terminal device, for example, the terminal is determined according to the identity of the terminal; or the base station may notify the terminal through signaling. The embodiment of the present invention does not limit this.

The length of the Zadoff-Chu sequence involved in the prior art is less than or equal to the length of the reference signal sequence. The cyclic extension of the Zadoff-Chu sequence can be used as the base sequence of the reference signal sequence. In contrast, in this embodiment, the length of the Zadoff-Chu sequence corresponding to π / 2BPSK is greater than the length of the reference signal sequence. The truncation or segmentation of the Zadoff-Chu sequence, that is, some elements of the Zadoff-Chu sequence, can be used as the base sequence of the reference signal sequence. Since the reference signal sequence is also generated based on the Zadoff-Chu sequence, in this sense, the Zadoff-Chu sequence can also be regarded as the base sequence of the reference signal sequence. In order to express uniformly, the technical solutions of the embodiments of the present invention are still introduced below using some elements of the Zadoff-Chu sequence as the base sequence of the reference signal sequence.

It should be understood that the manner of obtaining the base sequence from the Zadoff-Chu sequence is not limited to the manner of truncation or segmentation. In an alternative embodiment, the terminal or the base station may also first generate a full-length Zadoff-Chu sequence, and then select some elements from it as the base sequence of the reference signal sequence. The length of the base sequence (that is, the number of partial elements) is equal to the length of the reference signal sequence, and the specific selection of which elements can be determined based on the resource position occupied by the reference signal in the entire system bandwidth.

For example speaking, terminal or base station in accordance with the length N _ZC Zadoff-Chu sequence x _q is determined as the reference signal sequence length M, where N _ZC> M. Specifically, the Zadoff-Chu sequence x _{q may} be truncated to obtain a reference signal sequence of length M.

Exemplarily, a possible implementation manner is that a reference signal sequence of length M is represented as r _q , and the reference signal sequence can be obtained by the following formula:

r _q (m ′) = x _q (m ′), m ′ = 0,1,2, ..., M-1

Where r _q (m ′) is the m′th value of the reference signal sequence r _q .

Another possible implementation is that the reference signal sequence r _q can be obtained by the following formula:

r _q (m ′) = x _q ((m ′ + m _offset ) mod N _ZC ), m ′ = 0,1,2, ..., M-1

Where m _offset is an integer, which can be a pre-configured fixed value; mod means modulo operation.

In another optional implementation manner, the terminal may also directly generate several elements of the Zadoff-Chu sequence, which are used as the base sequence of the reference signal sequence without generating a full-length Zadoff-Chu sequence. In addition, the full-length Zadoff-Chu sequence or several elements of the Zadoff-Chu sequence can also be stored in the terminal in advance to save the overhead of generating the base sequence of the reference signal sequence in real time.

In this embodiment, both the terminal and the base station can determine the length of the reference signal sequence based on the uplink data transmission resources, and then determine the length of the base sequence of the reference signal sequence. That is, the value of the length of the reference signal sequence is determined by the bandwidth allocated by the uplink data. Generally, the length of the reference signal sequence is equal to the total number of minimum frequency resource units (such as subcarriers) included in the frequency resource for uplink data transmission, and the length of the base sequence is equal to the length of the reference signal sequence. Of course, this embodiment does not exclude the case where the length of the reference signal sequence and its base sequence is less than the total number of minimum frequency resource units (such as subcarriers) included in the frequency resource for uplink data transmission. For example, one half or one third of the total number of subcarriers of the length of the reference signal sequence and its base sequence.

For example, the terminal device determines the reference signal sequence of length M according to the Zadoff-Chu sequence of length N _ZC , where M is an element in the length set M _all , that is, M belongs to the length set M _all (M∈M _all ); M _all contains at least one element. M _all (i) is the i-th element (ie the i-th value) of M _all . The value of i ranges from 0 to M _BW -1 and M _BW is a positive integer. When M _BW > 1, any two elements in the length set M _all are inconsistent.

As described previously, a length of M _root length N _ZC Zadoff-Chu sequences of length N _ZC is a root and determines the set Q is N _ZC Zadoff-Chu sequence in a. When M _BW> 1, that is, at least two of the reference signal sequences of different lengths by the length of N _ZC Zadoff-Chu sequence is obtained; at the same time the length N _ZC of the Zadoff-Chu sequence of length M _root One of the Zdoff-Chu sequences of N _ZC .

For the length M of the reference signal sequence, one possible implementation is that the value of the length M is determined by the data allocation bandwidth, that is, the value of the elements in the length set M _all (that is, M _all (i)) is Determined by the data allocation bandwidth.

Exemplarily, the data allocation bandwidth can be expressed as N ^RB resource blocks (resource block, RB), one resource block contains

Subcarriers (also called resource elements (RE)). The value of the length M can be determined by N ^RB . Correspondingly, the value of the elements in the length set M _all (ie M _all (i)) can be set by the data allocation bandwidth

determine. among them,

Allocate bandwidth collection for data

The i-th element in, the value of i is an integer from 0 to M _BW -1,

Indicates that the data distribution bandwidth is

Resource blocks.

Exemplarily, the value of the length M may be

Where K is a positive integer, which may be pre-configured, or may be notified by the base station device to the terminal device through signaling. Correspondingly, the value of the elements in the length set M _all (ie M _all (i)) can be

It can be known that in the above description, when M _BW > 1, the values of the elements in the length set _Mall are determined by the values of at least two different data allocation bandwidths. That is for at least two different data allocated bandwidth, which is a reference signal sequence length N _ZC of the Zadoff-Chu sequence is determined, the length N _ZC of the Zadoff-Chu sequence according to sequence length N _ZC root and One of the M _root Zadoff-Chu sequence sequences of length N _ZC determined by the set Q.

E.g,

Data distribution bandwidth set

for

K = 2, M _root = 30; then we can know that the length set M _all is M _all = [576,600], which means that when the data distribution bandwidth is 96RB or 100RB, the corresponding reference signal sequence length is 576 or 600; the length is reference signal sequence 576 or 600 of length N _ZC of the Zadoff-Chu sequence determination, and N _ZC> 600; the length of Zadoff-Chu sequence N _ZC is in accordance with 30 the length N _ZC and root set Q determined for One of the Zdoff-Chu sequences of N _ZC .

It can be known from the foregoing description that for the Zadoff-Chu sequence, the length N _ZC and the root set Q where the root is located correspond to the length M of the reference signal sequence, or to the length set M _{all of the} reference signal sequence. That is to say, when a reference signal sequence of length M needs to be generated, a root value can be determined from the root set Q, and then the Zadoff-Chu sequence can be determined according to the determined root value and length N _ZC to obtain the reference signal sequence .

The length of the Zadoff-Chu sequence corresponding to π / 2 BPSK and the value of the root will be introduced in combination with the length of the reference signal sequence, and an example will be given to explain how to generate the corresponding reference signal sequence.

For the length M of different reference signal sequences, the corresponding length N _ZC and the root set Q where the root is located can be determined in the following manner.

For example, assuming that the length M of the reference signal sequence is 12, as an optional implementation, the length of the corresponding Zadoff-Chu sequence N _{zc has} a value of 307, and the value of the root q may be one or more of the following: 33 , 34,35,36,37,38,39,40,41,42,88,89,132,133,134,173,174,175,218,219,265,266,267,268,269,270,271,272,273,274.

Specifically, the terminal or the base station determines the length of the corresponding Zadoff-Chu sequence N _zc = 307 according to the modulation scheme of uplink data transmission π / 2 BPSK and the length of the reference signal sequence 12. Thereafter, the terminal or base station may determine the value of the root q of the Zadoff-Chu sequence according to system configuration, such as cell identity, slot number, and other system parameters. Assuming that the terminal or the base station determines that q = 33, the element values of the Zadoff-Chu sequence conform to the following equation:

Where m is an integer and 0≤m≤306. The specific value of m may be determined according to the length of the reference signal sequence and the frequency resource position of the reference signal sequence and other factors, which is not limited here. The sequence composed of the elements of these Zadoff-Chu sequences is referred to as the base sequence of the reference signal sequence. When the length of the base sequence and the reference signal sequence are the same, 12 elements of the Zadoff-Chu sequence are selected as the base sequence. The base sequence can be directly used as a reference signal sequence, or it can be obtained through a certain mathematical operation. In one embodiment, the twelve elements m = 0, 1, ..., 11 are selected as the base sequence by default. In another embodiment, according to the reference signal sequence occupying the resource position in the entire system bandwidth, 12 elements are selected as the base sequence. For example, assuming that the system bandwidth is 50 RBs, the subcarriers within the system bandwidth are recorded as {SC ₀ , SC ₁ , ..., SC ₅₉₉ }. The subcarrier of one RB allocated by the base station for the uplink data transmission is recorded as {SC ₁₂ , SC ₁₃ , ..., SC ₂₃ }, and in this case, m = 12,13, ..., 23.

It should be understood that the length of the Zadoff-Chu sequence N _ZC is 307 is only an optional implementation manner, and this embodiment is not limited thereto. As other optional implementation manners, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root may have many other possibilities. For example, the length N _ZC of the Zadoff-Chu sequence is 2819, and the root of the Zadoff-Chu sequence is one or more of the following: 322,324,326,328,330,332,334,336,338,340,801,803,805,807,1216,1602,2012,2014,2016,2018, 2479,2481,2483,2485,2487,2489,2491,2493,2495,2497.

It should be understood that the length M of the reference signal sequence is 12 is only one possibility, and in this embodiment, the length of the reference signal sequence may have other possibilities. The length of the reference signal sequence may be greater than 12 or less than 12, as shown in the following example. Each length of the reference signal sequence can have a corresponding length and root value of the Zadoff-Chu sequence. In addition, considering the completeness of the configuration, the base sequence configuration in this embodiment may include the length and root value of the Zadoff-Chu sequence corresponding to the reference signal sequences of different lengths.

For example, assuming that the length M of the reference signal sequence is 6, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 739, and the root of the Zadoff-Chu sequence has one or more of the following values:

For example, assuming that the length M of the reference signal sequence is 18, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 24, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The value of the length of the Zadoff-Chu sequence is 2851, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 161,163,165,177,179,181,183,185,187,189,191,611,757,759,889,891,893,1334,1336,1515,1517,1958,1960,1962,2091, 2093, 2240, 2660, 2662, 2664, 2666, 2668, 2670, 2672, 2674, 2685, 2687, 2689.

For example, assuming that the length M of the reference signal sequence is 30, the length and root of the Zadoff-Chu sequence have the following optional implementation manners:

The value of the length of the Zadoff-Chu sequence is 2861, and the value of the root of the Zadoff-Chu sequence is one or more of the following: 129,132,139,142,145,148,151,154,601,752,902,905,998,1352,1355,1358,1501,1504,1507,1861,1956, 1959, 2109, 2258, 2707, 2710, 2713, 2716, 2719, 2722, 2729, 2732.

For example, assuming that the length M of the reference signal sequence is 36, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The Zadoff-Chu sequence length N _ZC is a value of 389, a value of the root Zadoff-Chu sequence is one or more of the following: 14,15,16,17,37,51,81,93,101,124,135,148,152,159,164,169,175,186,187,202,203,214,220,225,230,237,241,254,265,288,296,308,336,352,372,373,374,375; or

For example, assuming that the length M of the reference signal sequence is 48, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 54, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 60, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 72, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 90, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 96, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 108, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 120, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 144, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 150, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 162, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 180, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 192, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 216, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 269, and the root of the Zadoff-Chu sequence has one or more of the following values: 2,20,35,36,52,57,65,79, 86,89,99,108,115,124,128,141,145, 154,161,170,180,183,190,204,212,217,233,234,249,267; or

For example, assuming that the length M of the reference signal sequence is 240, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 270, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length M of the reference signal sequence is 288, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3229, and the root of the Zadoff-Chu sequence has one or more of the following values: 15,189,247,339,498,541,768,803,925,1071,1082,1152,1213,1295,1376,1437, 1508,1606,1622,1721,1853,2016,2077,2426,2461,2688,2731,2982,3040,3044.

For example, assuming that the length M of the reference signal sequence is 300, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3253, and the root of the Zadoff-Chu sequence has one or more of the following values: 15,118,422,545,565,571,590,615,654,684,721,752,844,1079,1298,1354,1619,1634,2096,2174, 2501,2532,2569,2663,2682,2688,2708,2831,3135,3238.

For example, assuming that the length M of the reference signal sequence is 324, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3259, and the root of the Zadoff-Chu sequence has one or more of the following values: 14,15,227,421,617,620,740,811,868,929,994,1004,1091,1165, 1224,1480,1503, 1622,1637,1968,2035,2094,2265,2391,2448,2519,2639,2642,3032,3244,3245.

For example, assuming that the length M of the reference signal sequence is 360, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3299, and the root of the Zadoff-Chu sequence has one or more of the following values: 13,138,219,365,368,457,552,601,657,828,892,1095,1104,1294,1400,1412,1420,1546, 1879,1887,1899,1916,1982,2005,2398,2407,2471,2747,3080,3161,3286.

For example, assuming that the length M of the reference signal sequence is 384, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3359, and the root of the Zadoff-Chu sequence has one or more of the following values: 12,13,149,382,478,562,843,1009,1124,1248,1258,1341,1346, 1461,1473,1562,1673,1686,1797,1886,1898,2013,2018,2101,2111,2235,2350,2516,2767,2797,2881,3186,3210,3347.

For example, assuming that the length M of the reference signal sequence is 432, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3529, and the root of the Zadoff-Chu sequence has one or more of the following values: 11,12,77,161,218,546,608,622,885,981,1010,1060,1180,1339,1603, 1671,1725,1759,1804,1858,1926,2190,2349,2427,2469,2519,2548,2907,2983,3311,3452,3517,3518.

For example, assuming that the length M of the reference signal sequence is 450, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3673, and the root of the Zadoff-Chu sequence has one or more of the following values: 11,244,305,335,366,523,614,737,788,865,921,1021,1059,1143,1198,1203,1228,1502, 1684,1831,1842,1989,2445,2470,2530,2652,2885,2936,3059,3150,3307,3368,3429,3662.

For example, assuming that the length M of the reference signal sequence is 480, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 3919, and the root of the Zadoff-Chu sequence has one or more of the following values: 11,186,214,279,314,367,499,535,541,558,602,697,734,1034,1177,1344,1570,1634,1820,1857, 1954,1965,2099,2241,2285,2349,2468,2742,3222,3361,3420,3640,3705,3733.

For example, assuming that the length M of the reference signal sequence is 486, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 4091, and the root of the Zadoff-Chu sequence has a value of one or more of the following: 12,108,216,228,342,389,456,573,684,745,805,1167,1204,1226,1634,1740,1755,1759, 1851,1880,1910,1960,2181,2240,2457,2629,2945,3518,3578,3635,3749,3863,4079.

For example, assuming that the length M of the reference signal sequence is 540, the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

The length N _ZC of the Zadoff-Chu sequence has a value of 4159, and the root of the Zadoff-Chu sequence has one or more of the following values: 10,97,319,490,542,695,768,834,923,1037,1165,1190,1299,1390,1555, 1561,1739,1828,2074,2085,2212,2331,2604,2769,2817,2860,2969,3122,3236,3325,3464,3617,3669,3742,4148.

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 576, the length of the Zadoff-Chu sequence N _ZC takes a value of 4241, and the value of the root of the Zadoff-Chu sequence is as follows one or more:

For example, when the reference signal sequence based on the length of the M sequence generated by the Zadoff-Chu 600, the Zadoff-Chu sequence length N _ZC of the value of 4357, the value of the root Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 648, the length N of the Zadoff-Chu sequence N _{ZC has} a value of 4507, and the root of the Zadoff-Chu sequence has the value as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 720, the length of the Zadoff-Chu sequence N _{ZC has} a value of 4603, and the root of the Zadoff-Chu sequence has the value as follows one or more:

For example, when the reference signal sequence based on the length of the M sequence generated by the Zadoff-Chu 750, the Zadoff-Chu sequence length N _ZC of the value of 4877, the value of the root Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 768, the length of the Zadoff-Chu sequence N _{ZC has} a value of 4957, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 810, the length of the Zadoff-Chu sequence N _{ZC has} a value of 5717, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 864, the length of the Zadoff-Chu sequence N _ZC takes a value of 6163, and the value of the root of the Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 900, the length of the Zadoff-Chu sequence N _{ZC has} a value of 6599, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 960, the length of the Zadoff-Chu sequence N _{ZC has} a value of 6781, and the root of the Zadoff-Chu sequence has the value as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 972, the length of the Zadoff-Chu sequence N _{ZC has} a value of 7019, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1080, the length of the Zadoff-Chu sequence N _{ZC has} a value of 7523, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, a reference signal sequence based on the length of the M sequence generated by the Zadoff-Chu is 1152, the Zadoff-Chu sequence length N _ZC of the value of 7937, the value of the root Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1200, the length of the Zadoff-Chu sequence N _{ZC has} a value of 8233, and the value of the root of the Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1296, the length of the Zadoff-Chu sequence N _{ZC has} a value of 9137, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1350, the length of the Zadoff-Chu sequence N _{ZC has} a value of 9551, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1440, the length N of the Zadoff-Chu sequence N _ZC takes a value of 9749, and the value of the root of the Zadoff-Chu sequence is as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1458, the length N of the Zadoff-Chu sequence N _ZC takes the value 10039, and the root of the Zadoff-Chu sequence takes the value as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1500, the length of the Zadoff-Chu sequence N _{ZC has} a value of 10301, and the root of the Zadoff-Chu sequence has the following values: one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1536, the length N of the Zadoff-Chu sequence N _ZC takes the value 10781, and the root of the Zadoff-Chu sequence takes the value as follows one or more:

For example, when the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 1620, the length N of the Zadoff-Chu sequence N _ZC is 11369, and the root of the Zadoff-Chu sequence is as follows one or more:

For example, assuming that the length of the reference signal sequence is 1080 or 1152 (that is, the length set M _all is [1080,1152]), the length N _{ZC of} the Zadoff-Chu sequence and the value of the root have the following optional implementation manners:

For example, assuming that the length of the reference signal sequence is 1200 or 1296 or 1350 (that is, the length set M _all is [1200,1296,1350]), the length N _{ZC of} the Zadoff-Chu sequence and the value of the root can be optionally implemented as follows the way:

For example, assuming that the length of the reference signal sequence is 1440 or 1458 or 1500 or 1536 or 1620 (that is, the length set M _all is [1440, 1458, 1500, 1536, 1620]), the length of the Zadoff-Chu sequence N _ZC and the root The value of has the following optional implementations:

It should be understood that, in this embodiment, the method of generating the corresponding base sequence and reference signal sequence according to the length N _ZC and the value of the root of the Zadoff-Chu sequence in other optional implementation manners may refer to N _zc = 307, q = The example of 33 will not be described in detail in this embodiment.

5 is a schematic structural diagram of a wireless communication device according to an embodiment of the present invention. The wireless communication device may be a base station or a terminal in the wireless communication system of the embodiment of the present invention. As shown in FIG. 5, the wireless communication device 50 includes a processor 501 and a memory 502 connected to the processor 501. It should be understood that although one processor and one memory are shown in FIG. 5, the wireless communication device 50 may include other numbers of processors and memory.

The memory 502 is used to store computer programs or computer instructions. These computer programs or instructions can be divided into two categories according to function. When one type of computer program or instruction is executed by the processor 501, the wireless communication device 50 implements the steps of the terminal in the wireless communication method of the embodiment of the present invention. Such computer programs or instructions can be recorded as terminal function programs. When another type of computer program or instruction is executed by the processor 501, the wireless communication device 50 implements the steps of the base station in the wireless communication method of the embodiment of the present invention. Such computer programs or instructions can be recorded as base station functional programs.

In addition, the wireless communication device 50 may further include a connection line 500, a transmission circuit 503, a reception circuit 504, an antenna 505, an input / output (English: input / output, I / O) interface 506, and the like. Among them, the transmitting circuit and the receiving circuit can be coupled to the antenna and wirelessly connected with other communication devices. The transmitting circuit and the receiving circuit can also be integrated into a transceiver, and the antenna can be a radio frequency antenna supporting multiple frequencies. The I / O interface provides the possibility of interaction with other communication devices or users. For example, for a base station, the I / O interface may be a common public radio interface (English: common public radio interface, CPRI) interface, an Ethernet interface, a USB interface, etc. For the terminal, the I / O interface may be a screen, keyboard, microphone, speaker, USB interface, etc. Various components inside the wireless communication device 50 can be coupled together through various connection lines (such as a bus system), where the bus system can include a power bus, a control bus, a status signal bus, and the like in addition to a data bus. However, for the sake of clarity, all buses are collectively referred to as a bus system in this article.

It should be understood that in the embodiment of the present invention, when the terminal function program is stored in the memory 501, the wireless communication device 50 may be a terminal in the wireless communication system of the embodiment of the present invention. When the base station function program is stored in the memory 501, the wireless communication device 50 may be a base station in the wireless communication system of the embodiment of the present invention.

FIG. 6 is another schematic structural diagram of a wireless communication device according to an embodiment of the present invention. The wireless communication device may be a processor. The processor may be embodied as a chip or a system on chip (SOC), and is set in a base station or terminal of the wireless communication system of the embodiment of the present invention, so that the base station or terminal implements the wireless communication method of the embodiment of the present invention . As shown in FIG. 6, the wireless communication device 60 includes an interface unit 601, a control and operation unit 602, and a storage unit 603. Among them, the interface unit is used to communicate with other components of the base station or terminal, the storage unit 603 is used to store computer programs or instructions, and the control and operation unit 602 is used to decode and execute these computer programs or instructions. It should be understood that these computer programs or instructions may include the foregoing terminal function programs, and may also include the foregoing base station function programs. When the terminal function program is decoded and executed by the control and operation unit 602, the terminal can be enabled to implement the function of the terminal in the wireless communication method of the embodiment of the present invention. When the function program of the base station is decoded and executed by the control and operation unit 602, the base station can enable the base station to realize the function of the base station in the wireless communication method according to the embodiment of the present invention.

In an optional implementation manner, these terminal function programs or base station function programs are stored in a memory external to the wireless communication device 60. When the terminal function program or the base station function program is decoded and executed by the control and arithmetic unit 602, the storage unit 603 temporarily stores part or all of the content of the terminal function program, or temporarily stores part or all of the content of the base station function program.

In another optional implementation manner, these terminal function programs or base station function programs are set in a storage unit 603 stored inside the wireless communication device 60. When the terminal function program is stored in the storage unit 603 inside the wireless communication device 60, the wireless communication device 60 may be set in the terminal of the wireless communication system of the embodiment of the present invention. When the base station function program is stored in the storage unit 603 inside the wireless communication device 60, the wireless communication device 60 may be set in the base station of the wireless communication system of the embodiment of the present invention.

In yet another optional implementation manner, part of the content of these terminal function programs or base station function programs is stored in a memory external to the wireless communication device 60, and other parts of these terminal function programs or base station function programs are stored in the wireless communication device 60 In the internal storage unit 603.

7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 7, the terminal 70 includes a receiving module 701 and a processing module 702.

The receiving module 701 is used to receive indication information of uplink data transmission, and the indication information is used to indicate a modulation scheme of the uplink data transmission; wherein, the modulation scheme of the uplink data transmission is to adopt π / 2BPSK modulation for data To modulate;

The processing module 702 generates a reference signal according to a reference signal sequence of length M; wherein, the reference signal sequence corresponding to the uplink data is generated according to a base sequence configuration, and the base sequence configuration includes a Zadoff-Chu sequence. The values of the length N _ZC and the root; where, N _ZC >M; the values of M and N _ZC are positive integers; the modulation scheme of the upstream data transmission is to use π / 2 binary phase shift keying BPSK modulation to perform the data Modulation, the uplink data is a single carrier frequency division multiple access SC-FDMA waveform that is π / 2 BPSK modulated and transformed.

The sending module 703 is used to send uplink data and a reference signal associated with the uplink data transmission. The uplink data is modulated by π / 2 binary phase shift keying BPSK and generated by a single carrier frequency division after conversion processing. Address SC-FDMA waveform.

It should be understood that the terminal 70 may be used to implement the steps of the terminal in the wireless communication method according to the embodiment of the present invention. For related features, reference may be made to the above, and details are not described herein again.

In an optional implementation manner, the receiving module 701 may be a receiver, a receiving circuit, a transceiver, or a transceiver circuit, and the processing module 702 may be a processor. In an optional software implementation, the receiving module 701, the processing module 702, and the sending module 703 may be software modules. In an optional combination of hardware and software, the receiving module 701 may be a receiver, a receiving circuit, a transceiver or a combination of a transceiver circuit and a software module; the processing module 702 may be a processor and a software module Combination; the sending module 703 may be a combination of a transmitter, a sending circuit, a transceiver or a transceiver circuit and a software module. In another optional implementation manner, the above three optional implementation manners of the receiving module 701, the processing module 702, and the sending module 703 can also be combined with each other to form a new implementation manner.

FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the base station 80 includes a sending module 801, a processing module 802, and a receiving module 803.

Wherein, the receiving module 803 is configured to receive the reference signal associated with the uplink data transmission;

The processing module 802 is configured to determine a base sequence configuration of the reference signal sequence corresponding to the uplink data; the base sequence configuration includes values of the length N _ZC and root of the Zadoff-Chu sequence; the reference signal sequence is used for For generating the reference signal, its length is M; where, N _ZC >M;

The modulation scheme of the upstream data transmission is π / 2 binary phase shift keying BPSK modulation, and the upstream data is π / 2 binary phase shift keying BPSK modulation and the single carrier frequency division multiple access SC- after transformation processing FDMA waveform;

Estimate channel characteristics of uplink data transmission according to the base sequence configuration, and use the reference signal to demodulate the uplink data;

Optionally, the base station 80 further includes a sending module 801 for sending indication information of uplink data transmission, where the indication information is used to indicate the modulation scheme of the uplink data transmission; wherein, the modulation scheme of the uplink data transmission It is one of multiple modulation schemes supported by the terminal, and the multiple modulation schemes at least include π / 2 binary phase shift keying BPSK modulation;

The base sequence configuration of the reference signal sequence corresponding to the π / 2BPSK is different from the base sequence configuration of the reference signal sequence corresponding to other modulation schemes in the multiple modulation schemes.

It should be understood that the base station 80 may be used to implement the steps of the base station in the wireless communication method according to an embodiment of the present invention. For related features, reference may be made to the foregoing, and details are not described here.

In an alternative implementation, the sending module 801 may be a transmitter, a sending circuit, a transceiver or a transceiver circuit, the processing module 802 may be a processor, and the receiving module 803 may be a receiver, a receiving circuit, a transceiver or a transceiver circuit . In an optional implementation manner, the sending module 801, the processing module 802, and the receiving module 803 may be software modules. In an alternative implementation, the sending module 801 may be a receiver, a receiving circuit, a transceiver or a combination of a transceiver module and a software module, and the processing module 802 may be a combination of a processor and a software module, the receiving module It can be a combination of a receiver, a receiving circuit, a transceiver or a transceiver circuit and a software module. In another optional implementation manner, the foregoing three optional implementation manners of the sending module 801, the processing module 802, and the receiving module 803 may also be combined with each other to form a new implementation manner.

In this application, a processor refers to a device or a circuit with computational processing capabilities, and may be called a chip or a central processing unit (English: central processing unit, CPU). The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic devices, or transistor logic devices, and discrete hardware components. , Microprocessor. The processor may be integrated in a system on chip (SOC).

Memory refers to devices or circuits that have data or information storage capabilities, and can provide instructions and data to the processor. Memory includes read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), non-volatile random access memory (NVRAM), programmable read-only memory or electrically erasable and programmable Memory, registers, etc.

The reference signal generated in the wireless communication system, apparatus, and method provided by the embodiments of the present invention may be used as a demodulation reference signal to assist a base station device to demodulate transmitted data. When the length M of the reference signal sequence is an element of the length set M _all , the length N _ZC and the root set Q provided in the embodiment of the present invention may be used to determine the Zadoff-Chu sequence, and then determine the reference signal sequence.

Or, when the uplink data sent by the terminal adopts π / 2 BPSK modulation, the length N _ZC and the root set Q provided in the embodiment of the present invention may be used to determine the Zadoff-Chu sequence, and then the reference signal sequence. At this time, the π / 2 BPSK modulated data sent by the terminal device can use the single carrier frequency division multiple access (single carrier frequency division multiple access, SC-FDMA) generation method to obtain the time domain transmission data; you can also use filtering to assist in reducing the time domain PAPR for sending data.

In embodiments of the present invention, in a wireless communication system, device, and method, the PAPR of the reference signal generated by the Zadoff-Chu sequence determined by the value of the length N _ZC and the corresponding root set Q is relatively low, as shown in FIG. 9 . The solid black line in the following figure is the PAPR curve of the reference signal generated by the embodiment of the present invention, the abscissa is the PAPR value, and the ordinate is the complementary cumulative distribution function (CCDF). The value of M is 6,12,18,24,30,36,48,54,60,72,90,96,108,120,144,150, it can be seen that the PAPR of the reference signal generated by the Zadoff-Chu sequence provided by the embodiment of the present invention are all Within 2dB, it is basically consistent with the PAPR of the upstream data, which is very low, about 2dB. Therefore, the reference signal with a low PAPR value will not become a bottleneck that limits the output power of the non-linear PA. The transmitted data is the same as the transmitted The output power of the reference signal after passing through the PA is relatively high, thereby improving the communication performance of the system.

It should be understood that the foregoing is a specific embodiment of the present invention, and the protection scope of the present invention is not limited thereto. The above structural diagram only shows one logical function division. In specific implementation, there may be another physical division manner, for example, multiple logical modules are embodied as one physical module, or one logical module is split into multiple physical modules. Those of ordinary skill in the art can easily think of various equivalent modifications or replacements, which should fall within the technical scope disclosed in the present invention.

Claims

A wireless communication method, characterized in that it includes:

A reference signal is generated according to a reference signal sequence of length M; wherein the reference signal sequence corresponds to uplink data transmission and is generated according to a base sequence configuration that includes the length N ZC and root of the Zadoff-Chu sequence The value of N ZC >M; the values of M and N ZC are positive integers; the upstream data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

Sending the uplink data and the reference signal associated with the uplink data transmission.
A wireless communication method, characterized in that it includes:

Receiving uplink data and a reference signal associated with the uplink data transmission; the uplink data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

Determine the base sequence configuration of the reference signal sequence corresponding to the uplink data; the base sequence configuration includes values of the length N ZC and root of the Zadoff-Chu sequence; the reference signal sequence corresponding to the uplink data is used to generate the With the reference signal, its length is M; where, N ZC >M;

Estimate channel characteristics of uplink data transmission according to the base sequence configuration, and use the reference signal to demodulate the uplink data.
A wireless communication device, characterized in that it includes:

A processor, configured to generate a reference signal according to a reference signal sequence of length M; wherein the reference signal sequence corresponds to uplink data and is generated according to a base sequence configuration, the base sequence configuration including the length N of the Zadoff-Chu sequence The values of ZC and root; where, N ZC >M; the values of M and N ZC are positive integers; the upstream data is single carrier frequency division multiple access SC- modulated by π / 2 binary phase shift keying BPSK FDMA waveform;

The transceiver is used to send the uplink data and the reference signal associated with the uplink data transmission.
A wireless communication device, characterized in that it includes:

A transceiver for receiving uplink data and a reference signal associated with the uplink data transmission; the uplink data is a single carrier frequency division multiple access SC-FDMA waveform modulated by π / 2 binary phase shift keying BPSK;

A processor, configured to determine a base sequence configuration of the reference signal sequence corresponding to the uplink data; the base sequence configuration includes a length of the Zadoff-Chu sequence N ZC and values of roots; the reference signal sequence corresponding to the uplink data It is used to generate the reference signal and its length is M; where, N ZC >M;

The processor is further configured to estimate channel characteristics of uplink data transmission according to the base sequence configuration, and use the reference signal to demodulate the uplink data.
A wireless communication device, characterized in that it includes:

A processor, when the processor executes the program code, the wireless communication device executes the method described in right 1 or right 2.
A wireless communication device, characterized in that it includes:

A processor and a memory connected to the processor, the memory stores program codes, and the program codes are executed by the processor, so that the wireless communication device executes the method described in right 1 or right 2 .
The method according to claim 1 or 2, or the device according to any one of claims 3 to 6, characterized in that:

The absolute value of the difference between the peak-to-average power ratio PAPR of the reference signal and the PAPR of the uplink data is zero or less than a preset value.
The method according to claim 1 or 2, or the device according to any one of claims 3 to 6, characterized in that:

The value of the length M of the reference signal sequence is determined by the bandwidth allocated by the uplink data.
The method according to claim 1 or 2, or the device according to any one of claims 3 to 6, wherein the base sequence configuration of the reference signal sequence corresponds to the transmission modulation scheme of the uplink data.
The method or device according to any one of claims 1 to 9, characterized in that:

When the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 6, the length of the Zadoff-Chu sequence N ZC has a value of 739, and the root of the Zadoff-Chu sequence has a value of one or the following Multiple:

153,154,155,156,157,158,159,160,161,162,163,164,222,223,224,515,516,517,575,576,577,578,579,580,581,582,583,584,585,586.
The method or device according to any one of claims 1 to 9, characterized in that:

The length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 18;

The length N ZC of the Zadoff-Chu sequence has a value of 353, and the root of the Zadoff-Chu sequence has one or more of the following values: 25, 26, 27, 28, 29, 30, 31, 64, 96,107,127,128,160,161,162,191,192,193,225,226,246,257,289,322,323,324,325,326,327,328; or

The length N ZC of the Zadoff-Chu sequence is 2837, and the root of the Zadoff-Chu sequence is one or more of the following: 214,217,220,223,242,245,248,251,254,515,518,770,1027,1030,1293,1542,1807,1810,2065, 2319,2322,2581,2584,2587,2590,2593,2614,2617,2620,2623.
The method or device according to any one of claims 1 to 9, characterized in that:

The length M of the reference signal sequence generated based on the Zadoff-Chu sequence belongs to the set M all , M all is [1200, 1296, 1350], the length N of the Zadoff-Chu sequence N ZC takes a value of 8677, and the Zadoff -The value of the root of the Chu sequence is one or more of the following:

125,392,393,511,818,963,2549,2767,3306,3654,3853,3945,3987, 4004,4103,4260,4417,4574,4673,4690,4732,4824,5023,5371,5910,6128,7714,7859,8166,8284, 8285,8552.
The method or device according to any one of claims 7 to 12, characterized in that:

The element values of the Zadoff-Chu sequence conform to the following equation:

Where m is the element number of the Zadoff-Chu sequence, 0≤m≤N zc -1, x q (m) is the m-th element of the Zadoff-Chu sequence, and q is the Zadoff-Chu sequence Root, N zc is the length of the Zadoff-Chu sequence, is an odd number, and j is an imaginary unit.
The method or device according to any one of claims 7 to 12, characterized in that:

The element values of the Zadoff-Chu sequence conform to the following equation:

Where m is the element number of the Zadoff-Chu sequence, 0≤m≤N zc -1, x q (m) is the m-th element of the Zadoff-Chu sequence, and q is the Zadoff-Chu sequence Root, N zc is the length of the Zadoff-Chu sequence, is an even number, and j is an imaginary number unit.
One kind of method for generating reference signal sequence, wherein, based on the reference signal sequence length M Zadoff-Chu sequence generated for 6, the Zadoff-Chu sequence length N ZC of the value of 739, the Zadoff-Chu The value of the root of the sequence is one or more of the following:

153,154,155,156,157,158,159,160,161,162,163,164,222,223,224,515,516,517,575,576,577,578,579,580,581,582,583,584,585,586.
A method for generating a reference signal sequence, characterized in that the length M of the reference signal sequence generated based on the Zadoff-Chu sequence is 18;

The length N ZC of the Zadoff-Chu sequence has a value of 353, and the root of the Zadoff-Chu sequence has one or more of the following values: 25, 26, 27, 28, 29, 30, 31, 64, 96,107,127,128,160,161,162,191,192,193,225,226,246,257,289,322,323,324,325,326,327,328; or

The length N ZC of the Zadoff-Chu sequence is 2837, and the root of the Zadoff-Chu sequence is one or more of the following: 214,217,220,223,242,245,248,251,254,515,518,770,1027,1030,1293,1542,1807,1810,2065, 2319,2322,2581,2584,2587,2590,2593,2614,2617,2620,2623.
A method for generating a reference signal sequence, characterized in that the length M of the reference signal sequence generated based on the Zadoff-Chu sequence belongs to the set M all , and M all is [1200, 1296, 1350], and the length of the Zadoff-Chu sequence The value of N ZC is 8677, and the value of the root of the Zadoff-Chu sequence is one or more of the following:

125,392,393,511,818,963,2549,2767,3306,3654,3853,3945,3987,4004,4103,4260,4417,4574,4673,4690,4732,4824,5023,5371,5910,6128,7714,7859,8166,8284, 8285,8552.
A computer-readable storage medium containing instructions, which when executed on a computer, causes the computer to perform the method according to any one of claims 1-2 or 7-17.
A computer program product containing instructions that, when run on a computer, causes the computer to perform the method according to any one of claims 1-2 or 7-17.