WO2013163955A1

WO2013163955A1 - Method, system and apparatus for uplink transmission

Info

Publication number: WO2013163955A1
Application number: PCT/CN2013/075086
Authority: WO
Inventors: 高秋彬; 周海军; 秦飞; 潘学明; 鲍炜
Original assignee: 电信科学技术研究院
Priority date: 2012-05-04
Filing date: 2013-05-02
Publication date: 2013-11-07
Also published as: CN103384182B; CN103384182A

Abstract

Embodiments of the present invention relate to the technical field of wireless communication, and especially relate to a method, system and apparatus for uplink transmission, to resolve the problem existed in prior art. The problem is that in the case of restricted uplink transmission power, spectrum efficiency and transmission efficiency are comparatively low during uplink transmission. The uplink transmission method in embodiments of the present invention comprises: user equipment separately spreading the spectrum of every complex symbol data to obtain spread spectrum data sequences of every complex symbol data, and mapping spread spectrum data sequences of every complex symbol data to Q subframes, wherein Q is a positive integer; said user equipment separately modulating spread spectrum data sequences mapped to every subframe to generate transmission signals corresponding to every subframe; said user equipment transmitting the transmission signal in the corresponding subframe. By using embodiments of the present invention, the spectrum efficiency and transmission efficiency during uplink transmission are able to be improved in the case of restricted power of the uplink transmission.

Description

Method, system and device for performing uplink transmission The present application claims to be submitted to the Chinese Patent Office on May 4, 2012, the application number is 201210137904.X, and the invention name is "a method, system and device for uplink transmission" Priority of Chinese Patent Application, the entire contents of which is incorporated herein by reference.

The present invention relates to the field of wireless communication technologies, and in particular, to a method, system, and device for performing uplink transmission. BACKGROUND In a communication scenario such as satellite communication, the signal strength of the uplink transmission is limited by the transmission power of the user equipment, and in the case where the path loss is large, the transmission performance cannot be guaranteed. Taking the VoIP (voice over IP) service as an example, a 224-bit data packet is generated every 20 ms, and the 224 bits need to be transmitted within 20 ms. If the transmission of 224 bits in one TTI (Transmission Time Interval) is completed, the base station's received signal-to-noise ratio is lower than the demodulation threshold of the data packet because the coding rate is higher, and the base station cannot correctly demodulate.

There are currently two solutions:

1. Repeatedly transmitting the data packet in the time domain, for example, repeating the transmission 20 times, the total energy of the user equipment transmitting the same data packet increases, and the base station may correctly demodulate the data by combining 20 received data.

The problem with this solution is that the spectrum efficiency is reduced. A user equipment occupies a PRB (physical resource block) and cannot be multiplexed with other users.

2. Divide 224 bits into 20 small data packets and transmit them in 20 subframes. Since the coding rate in each subframe is correspondingly reduced, the base station can correctly demodulate each small data packet in each subframe, thereby restoring Out of the original data packet.

The problem with this solution is that after the small packets are dispersed, each small packet adds extra overhead, such as MAC (Medium Access Control) header overhead, CRC (Cyclic Redundancy Check). The parity overhead, etc., the total overhead is greatly increased, and the transmission efficiency is low.

In summary, in the case where the uplink transmission power is limited, the spectrum efficiency and the transmission efficiency are relatively low when uplink transmission is performed. SUMMARY OF THE INVENTION A method, system, and device for performing uplink transmission according to an embodiment of the present invention are provided to solve the problem that spectrum efficiency and transmission efficiency are relatively low when uplink transmission is performed in the case where the uplink transmission power existing in the prior art is limited. problem. A method for performing uplink transmission according to an embodiment of the present invention includes:

The user equipment separately spreads each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and maps the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is a positive integer;

The user equipment separately modulates the spread spectrum data sequence mapped to each subframe to generate a transmit signal corresponding to each subframe;

The user equipment transmits a transmission signal on a corresponding subframe.

Another method for performing uplink transmission provided by the embodiment of the present invention includes:

The network side device extracts a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, and Q is a positive integer;

The network side device combines the spread spectrum data sequences of the Q subframes to obtain a complete spread data sequence of the complex symbol data;

The network side device despreads the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data. A user equipment for performing uplink transmission according to an embodiment of the present invention includes:

a processing module, configured to separately spread each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and map the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is a positive integer ;

a modulation module, configured to separately modulate the spread spectrum data sequence mapped to each subframe to generate a transmit signal corresponding to each subframe;

And a sending module, configured to send the sending signal on the corresponding subframe.

A network side device for performing uplink transmission according to an embodiment of the present invention includes:

An extracting module, configured to extract a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, and Q is a positive integer;

a combining module, configured to combine the spread spectrum data sequences of the Q subframes to obtain a complete spread data sequence of the complex symbol data;

The despreading module is configured to despread the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data. A system for performing uplink transmission according to an embodiment of the present invention includes:

a user equipment, configured to separately spread each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and map the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is a positive integer And respectively modulating the spread spectrum data sequence mapped to each subframe to generate a transmission signal corresponding to each subframe, and transmitting the transmission signal in the corresponding subframe;

a network side device, configured to extract a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, and the spread spectrum data sequences of the Q subframes are combined to obtain one The complete spread spectrum data sequence of the complex symbol data, despreading the complete spread spectrum data sequence, and obtaining despread data corresponding to the complex symbol data. Since the data of one data packet is mapped to multiple intra-subframe transmissions, the total transmission energy of the user equipment is increased by the extension of the signal in the time domain to ensure that the data transmitted by the user equipment can be correctly received, thereby improving the uplink. When the transmission power is limited, the time spectrum efficiency and transmission efficiency of the uplink transmission are performed. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram of signal transmission according to an embodiment of the present invention;

2 is a schematic structural diagram of a system for performing uplink transmission according to an embodiment of the present invention;

3 is a schematic diagram of time domain spreading according to an embodiment of the present invention;

4 is a schematic diagram of frequency domain spreading according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of time domain spread spectrum + frequency domain spread spectrum according to an embodiment of the present invention; FIG.

6 is a schematic diagram of mapping to a part of a time-frequency resource according to an embodiment of the present invention;

7 is a schematic structural diagram of user equipment of a system for performing uplink transmission according to an embodiment of the present invention;

8 is a schematic structural diagram of a network side device of a system for performing uplink transmission according to an embodiment of the present invention;

FIG. 9 is a schematic flowchart of a method for performing uplink transmission by a user equipment according to an embodiment of the present invention;

FIG. 10 is a schematic flowchart of a method for performing uplink transmission by a network side device according to an embodiment of the present invention. In the embodiment of the present invention, the user equipment separately spreads each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and maps the spread spectrum data sequence of each complex symbol data to Q subframes. Wherein Q is a positive integer; respectively, the spread spectrum data sequence mapped to each subframe is separately modulated to generate a transmit signal corresponding to each subframe; and the transmit signal is transmitted on the corresponding subframe. Since the data of one data packet is mapped to multiple intra-subframe transmissions, the total transmission energy of the user equipment is increased by the extension of the signal in the time domain to ensure that the data transmitted by the user equipment can be correctly received, thereby improving the uplink. When the transmission power is limited, the time spectrum efficiency and transmission efficiency of the uplink transmission are performed.

In the embodiment of the present invention, FDMA (Frequency Division Multiple Access) + CDMA (Code Division Multiple Access) or TDMA (Time Division Multiple Access) may be used in each subframe. Address) +CDMA mode supports simultaneous transmission of multiple user equipments to further ensure the spectrum efficiency of the system.

As shown in FIG. 1 , in the signal transmission diagram of the embodiment of the present invention, the uplink transmission is divided into six processes:

Channel coding, scrambling, modulation mapping, spreading, subframe mapping, generating sub-frame signals.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

In the following description, the implementation of the cooperation between the network side and the user equipment side will be described first. Finally, the implementations from the network side and the user equipment side will be described separately, but this does not mean that the two must be implemented together. In fact, When the network When the side is implemented separately from the user equipment side, the problems existing on the network side and the user equipment side are also solved, but when the two are combined, a better technical effect is obtained.

As shown in FIG. 2, the system for performing uplink transmission in the embodiment of the present invention includes: a user equipment 10 and a network side device 20. The user equipment 10 is configured to separately spread each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and map the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is positive Integer, the spread spectrum data sequence mapped to each subframe is separately modulated to generate a transmit signal corresponding to each subframe, and the transmit signal is sent on the corresponding subframe;

The network side device 20 is configured to extract a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, Q is a positive integer; and the spread spectrum data sequence of the Q subframes Combining to obtain a complete spread spectrum data sequence of complex symbol data; despreading the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data.

In the implementation, the value of Q can be set as needed, such as 4, 8, 16, 20, etc.; can also be determined by reference to the following factors:

The size of the data packet to be transmitted, the larger the data packet, the greater the corresponding Q value;

The link shield of the user equipment 10, the better the link shield, the smaller the corresponding Q value;

The length of the spread spectrum data sequence, the larger the length of the spread spectrum data sequence, the larger the Q value required.

The value of Q is determined by the transmission parameters configured by the received network side device 20 to the user equipment 10. Or a predetermined fixed size, or determined by the agreed value of Q and the mapping rules of other parameters. The other parameter may be the length of the spread spectrum data sequence. For example, the length of the spread spectrum data sequence is 144, and the length of the spread spectrum data sequence that can be transmitted in each subframe is 12, then the value of Q should be 144/12 = 12 .

Preferably, the user equipment 10 performs spreading on each complex symbol data in various manners. Two types are listed below: Spreading mode 1. For a complex symbol data, the user equipment 10 uses the spread spectrum corresponding to the complex symbol data. a code, spreading the complex symbol data;

The spreading codes corresponding to each complex symbol data are all the same or all different or partially identical.

In the implementation, the spreading code corresponding to each complex symbol data may be specified in the protocol, or the user equipment 10 may be notified by the network side. For example, the corresponding spreading code may be determined according to the position of the complex symbol data in the entire data to be transmitted, that is, the correspondence between the preset position and the spreading code, and then the corresponding spreading code is determined according to the position of the complex symbol data.

Spreading mode 2, the user equipment 10 groups all complex symbol data; for a set of complex symbol data, spreads all the complex symbol data in the group by using the corresponding spreading code of the group; wherein, each group corresponds to The spreading codes are all different.

In the spreading mode 2, the user equipment 10 can group the complex symbol data according to the set order, but it is necessary to ensure that the user equipment 10 and the network side device 20 have the same understanding of the set order.

Preferably, the spreading code corresponding to the complex symbol data is determined by the received network side indication or determined according to a preset rule. Here are a few ways to group:

Grouping mode 1. The user equipment 10 sequentially selects complex symbol data for grouping.

Specifically, the user equipment 10 sequentially divides the complex symbol data into a plurality of groups according to the set number of complex symbol data included in each group. For example, if there are 100 complex symbol data, the number of complex symbol data included in each group is 10, then 1~10 points to a group, 11 20 points to a group, and so on.

Preferably, for a set of complex symbol data, the user equipment 10 determines complex symbol data in the set of data according to Equation 1:

x ^p (n) = d(pxM^ _m +n) Equation 1; where is the _nth complex symbol data of group p; d( xM^ _m +n) is the first; ?ΧΜ^+" complex symbols Data; is the number of complex symbol data included in the complex signal data of the ρ group; p is the number of the group, =0, 1, ..., — 1, is the number of packets; n is the complex symbol data of the p-th group Number,

" = 0,1,···,Μ - 1.

Preferably, the number of ρ ^^ _¾ multiplexed symbol data included in the group of complex symbols indicating the data received by the network side determines, determined by the formula.

The number of complex symbol data included in each group can be determined according to the amount of data transmitted and the Q value. Grouping mode 2: The user equipment 10 selects complex symbol data for grouping.

Specifically, the user equipment 10 sequentially divides the complex symbol data into a plurality of groups according to the number of intervals of the complex symbol data included in each group. For example, there are 30 complex symbol data, and the number of intervals of complex symbol data included in each group is 10, then 1, 11, 21 are grouped into one group, 2, 12, 22 are grouped into one group, and so on.

Preferably, for a set of complex symbol data, user equipment 10 determines complex symbol data in the set of data according to Equation 2:

x ^p (n) = d(p + n P) Equation 2; where is the _nth complex symbol data of the pth group; d(p + nxP"} is the p + nxP complex symbol data; p is the group The number, =0,1,.." — 1, is the number of groups; _n is the number of the p-group complex symbol data, " = 0,1,.." 1^^- 1, is the p-group complex The number of complex symbol data included in the symbol data, ^M ^m = ^M _Sy m ^{/ P} , where ^sym is the number of complex symbol data.

Preferably, the user equipment 10 maps the spread spectrum data sequence of each complex symbol data to the Q subframes in a plurality of ways. Two types are listed below:

Mapping mode 1. The user equipment 10 sequentially selects the spread spectrum data sequence to be mapped to the Q subframes. Specifically, the user equipment 10 sequentially divides the spread spectrum data sequence into multiple groups according to the set number of the spread data sequences mapped to one subframe, and each group is mapped to one subframe. For example, the length of the spread spectrum data sequence is 100, and the length of the spread spectrum data sequence mapped to one subframe is 10, then 1~10 is mapped to one subframe, 11~20 is mapped to another subframe, and so on.

The number of spread spectrum data sequences mapped to one subframe may be determined according to the amount of data transmitted and the Q value. In an implementation, for one subframe, user equipment 10 may determine a sequence of spread data that needs to be mapped to the subframe according to Equation 3:

z(q, k) = y(qx M _sf + k) Equation 3; where is the k-th spread spectrum data sequence mapped onto subframe _q ; _y(gxM _s is χΜ _5/ + : spread spectrum Data sequence; _g is the subframe number, = ο, ι,···, ρ_ι; is the number of the spread spectrum data sequence mapped to a sub-frame, k = 0X..., M _sf - 1 , M _sf is The length of the sequence of spread spectrum data mapped into each subframe.

Correspondingly, the network side device 20 combines the spread spectrum data sequences on the Q subframes in subframe order.

For example, if the length of the spread spectrum data sequence of each subframe is 10, in the combined data sequence, the data of the first ι~ιο is the spread spectrum data sequence in the first subframe, and the data of the 11th to the 20th is the second subframe. The sequence of spread spectrum data, and so on.

The number of spread data sequences mapped to one subframe may be determined according to the length of the spread data sequence and the Q value. In an implementation, the network side device 20 combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to Equation 4:

x(m) = r(q, k) Equation 4; where: W) is the combined Wth spread spectrum data sequence; r (g, is the kth spread spectrum data sequence on subframe q; q = _ ^{m 1 M} _S f \ Λ ^{= m} - q ^{x M} _S f , is the length of the sequence of spread spectrum data mapped into each subframe.

Mapping mode 2: User equipment 10 The interval selection spread spectrum data sequence is mapped to Q subframes.

Specifically, the user equipment 10 sequentially divides the spread spectrum data sequence into multiple groups according to the set number of intervals, and each group is mapped to one subframe. For example, if the length of the spread spectrum data sequence is 30 and the number of intervals is 10, the first, eleventh, and twenty-first spread spectrum data in the sequence are mapped to one subframe, and the second, second, and twenty-two spread spectrum data maps are mapped. Go to another sub-frame, and so on.

The number of intervals may be equal to the number of subframes Q, or obtained by transmission parameters configured on the network side. In an implementation, for one subframe, user equipment 10 may determine a sequence of spread spectrum data that needs to be mapped to the subframe according to Equation 5:

. . . Equation 5; where is the k-th spread data sequence mapped onto subframe _q ; _ + Α: χρ) is the + ^χ δ spread spectrum data sequence; g is the subframe number, = ο,ι,···,ρ— 1; is the number of the spread spectrum data sequence mapped into one subframe, k = 0X..., M _sf — 1 , M _sf is the map mapped to each sub-frame The length of the frequency data sequence.

Correspondingly, the network side device 20 selects the spread spectrum data sequences on the Q subframes to be combined.

For example, the length of the spread spectrum data sequence of each subframe is 30, and there are 10 subframes. If the number of intervals is 10, the first spread spectrum data of each subframe of 1 to 10 subframes is sequentially combined. The first to the tenth bits of the spread spectrum data sequence, the second spread spectrum data of each subframe of the first subframe to the tenth subframe is ranked from the 11th to the 20th of the combined data, and so on. Finally, the sequence of the spread spectrum data is combined.

In an implementation, the network side device 20 selects the spread spectrum data sequence on the Q subframes according to the formula six intervals: xO) = r(q, k) Equation 6; where w) is the combined mth spread spectrum The data sequence; r(q, k) is the kth spread spectrum data sequence on subframe _q ; k = [ nl Q\ , q = m - kxQ , _Q is the number of sub-frames.

Preferably, for one spread spectrum data sequence of one subframe, the user equipment 10 maps the spread spectrum data sequence to the time-frequency resource, and modulates the spread spectrum data sequence on the time-frequency resource to generate OFDM (Orthogonal Frequency Division Multiplexing) , Orthogonal Frequency Division Multiplexing) symbols.

In an implementation, the spread spectrum data sequence mapped onto each OFDM symbol is OFDM modulated or

DFT-S-OFDM (Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing) modulation, to generate OFDM symbols.

Preferably, there are three ways for the user equipment 10 to map the spread spectrum data sequence to the time-frequency resource, which are respectively listed below.

The mapping mode is as follows: The user equipment 10 uses the time domain mode to map the spread spectrum data sequence corresponding to one complex symbol data to the same subcarrier of different OFDM symbols. For details, refer to FIG. 3.

For example, there are 12 data subcarriers in the transmission bandwidth of the user equipment 10, 12 OFDM symbols in one subframe for data transmission, and a spread spectrum data sequence of one data symbol mapped to a spread spectrum data sequence in one subframe. A spread spectrum data sequence of length 12 and length 12 is mapped to the same data subcarrier of 12 OFDM symbols, respectively. The spread data sequence of different data symbols is mapped to different data subcarriers. In this case, the user equipment 10 can transmit up to 12 data symbols using one spreading code in one subframe, and one data per subcarrier. symbol. In an implementation, a plurality of spreading codes may be included in the transmission parameters, such that the user equipment 10 uses a plurality of spreading codes to increase the number of data symbols transmitted in each subframe.

Correspondingly, the network side device 20 extracts the spread spectrum data sequence on the specific time domain resources in the Q subframes in the time domain manner.

The mapping mode 2, the user equipment 10 uses the frequency domain method to map the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of the same OFDM symbol, as shown in FIG. 4 .

For example, there are 12 data subcarriers in the transmission bandwidth of the user equipment 10, 12 OFDM symbols in one subframe for data transmission, and a spread spectrum data sequence of one data symbol mapped to a spread spectrum data sequence in one subframe. A sequence of spread spectrum data of length 12 and length 12 is mapped to 12 data subcarriers of the same OFDM symbol, respectively. Spreading data sequences of different data symbols are mapped to different OFDM symbols. In this case, the user equipment can transmit up to 12 data symbols using one spreading code in one subframe, and one data symbol per OFDM symbol. . In an implementation, a plurality of spreading codes may be included in the transmission parameters, such that the user equipment 10 uses a plurality of spreading codes to increase the number of data symbols transmitted in each subframe.

Correspondingly, the network side device 20 extracts the spread spectrum data sequence on the specific frequency domain resources in the Q subframes by using the frequency domain method.

The mapping mode 3, the user equipment 10 uses a combination of the time domain and the frequency domain, and maps the spread data sequence corresponding to one complex symbol data to multiple subcarriers of multiple OFDM symbols, as shown in FIG. 5 .

For example, there are 12 data subcarriers in the transmission bandwidth of the user equipment, 12 OFDM symbols in one subframe for data transmission, and a spread spectrum data sequence of one data symbol mapped to the length of the spread data sequence in one subframe. For 144, a spread spectrum data sequence of length 144 of one data symbol is mapped onto 12 data subcarriers of 12 OFDM symbols, respectively. In this case, the user equipment can transmit up to one data symbol using one spreading code in one subframe. The base station can configure the user equipment to use multiple spreading codes to increase the number of data symbols transmitted in each subframe. The time domain + frequency domain spread spectrum can be realized by two-stage spread spectrum, that is, the data symbol is firstly spread by the frequency domain (time domain) spread spectrum sequence, and then the time domain of the spread spectrum sequence is used ( The frequency domain) spreading sequence performs second-level spreading, as shown in FIG. 5.

Correspondingly, the network side device 20 extracts the spread spectrum data sequence in a specific time domain and frequency domain resource in the Q subframes by using a combination of the time domain and the frequency domain.

Preferably, after the user equipment 10 maps the spread spectrum data sequence to the time-frequency resource, the spread spectrum data sequence may also be mapped to all or part of the time-frequency resources.

Specifically, the user equipment 10 may map the spread data sequence to all time-frequency resources or only to part of the time-frequency resources by selecting the length of the spread spectrum data sequence mapped into one subframe. For the latter, multiple data symbols of the user equipment can be simultaneously transmitted on different time-frequency resources. For example, four data symbols are respectively spread-spread mapped to four time-frequency regions. See Figure 6 for details.

The data symbols of different user equipments 10 may also be transmitted separately in different time-frequency regions. In an implementation, the user equipment 10 also needs to perform channel coding, scrambling, and modulation mapping before spreading the complex symbol data to obtain a spread spectrum data sequence for each complex symbol data, as shown in FIG. specific:

Channel coding: The source data block contains bit bit data 0),...^(^ _3⁄4 -1). After channel coding, the data block length is Mbit bits, 6(0), ..., 6 (M _bit _l) ;

Scrambling: Channel-coded data blocks 6(0),... (M _bit - 1) generate scrambled data blocks by scrambling

6~(0),... ~(M _bit - 1). ~ ~

Constellation mapping: scrambled data blocks (0), ..., ^(;M _bit - 1) generate complex symbol data blocks i (0),..., i (M _sym — 1 via constellation mapping ) , contains M _sym complex symbol data. The specific mapping method can be BPSK

(Binary phase shift keying), QPSK (Quadature Phase Shift Keying), 16QAM (Quadature Amplitude Modulation), 64QAM, etc.

Correspondingly, after the network side device 20 obtains the despread data corresponding to the complex symbol data, it also needs to perform receiving processing on the despread data. Specifically, the despread data corresponding to the complex symbol data includes:

Demodulation, descrambling, and decoding processing.

The user equipment 10 and the network side device 20 can perform the foregoing transmission process according to the transmission parameters.

Transmission parameters include, but are not limited to, at least one of the following:

The number of bound subframes (that is, the Q value), the length of the spread spectrum data sequence mapped to one subframe, and the time-frequency resources occupied in each subframe (ie, the frequency domain, the time domain, the frequency domain, and the time domain) One of the combined methods), the spreading code, which subframe(s) are mapped (the mapped subframe is discontinuous), the first subframe of the mapping (the mapped subframe is continuous), and the mapping to the subframe The mode, the number of data symbols mapped to one subframe during the sub-frame process, the number of intervals mapped to the subframe, the manner of mapping to the time-frequency resource, the number of complex symbol data, and the number of spread data sequences.

In the implementation, the transmission parameter may be specified in the protocol in advance, or may be configured by the network side device 20; part of the information in the transmission parameter may be specified by the protocol, and part of the information is configured by the network side device 20. Regardless of which method is used, it is only necessary to ensure that the parameters determined by the user equipment 10 and the network side device 20 for uplink transmission are the same.

If the network side device 20 is required to perform configuration, preferably, the network side device 20 configures the transmission parameters for the user equipment 10.

Specifically, the network side device 20 configures the transmission parameter for the user equipment by using the high layer signaling semi-static, or configures the transmission parameter for the user equipment by scheduling the control signaling of the uplink transmission.

It should be noted that the embodiments of the present invention are not limited to the foregoing two configurations, and other embodiments capable of configuring transmission parameters for the user equipment 10 are applicable to the embodiments of the present disclosure.

For the network side device 20, since the transmission parameters of the user equipment 10 are known, it is known to which subframes the user equipment 10 maps data to, and correspondingly, the network side device 10 can acquire the user equipment from the corresponding subframe. After the data is grouped, the combined data is despreaded and then received.

The network side device in the embodiment of the present invention may be a station (such as a macro base station, a home base station, etc.), or It is an RN (relay) device, and it can also be other network-side devices.

As shown in FIG. 7, the user equipment of the system for uplink transmission in the embodiment of the present invention includes: a processing module 701, a modulation module 702, and a sending module 703.

The processing module 701 is configured to separately spread each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and map the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is positive Integer

The modulating module 702 is configured to separately modulate the spread spectrum data sequence mapped to each subframe to generate a transmit signal corresponding to each subframe.

The sending module 703 is configured to send the sending signal on the corresponding subframe.

Preferably, the processing module 701 performs spreading on the complex symbol data by using a spreading code corresponding to the complex symbol data for a complex symbol data, where the spreading codes corresponding to each complex symbol data are all the same or none. Same or partially the same.

Preferably, the processing module 701 groups all complex symbol data; for a group of complex symbol data, uses the corresponding spreading code of the group to spread all the complex symbol data in the group; wherein each group corresponds to the expansion The frequency codes are all different.

Preferably, the spreading code corresponding to the complex symbol data is determined by the received network side indication or determined according to a preset rule. Preferably, the processing module 701 sequentially selects complex symbol data for grouping.

Preferably, for a set of complex symbol data, the processing module 701 selects the complex symbol data for grouping according to the formula.

Preferably, the processing module 701 selects complex symbol data for grouping.

Preferably, for a set of complex symbol data, the processing module 701 selects the complex symbol data for grouping according to the formula two intervals.

Preferably, the processing module 701 sequentially selects the spread spectrum data sequence to be mapped to the Q subframes.

Preferably, for one subframe, the processing module 701 selects the spread spectrum data sequence to be mapped to the Q subframes according to the third formula.

Preferably, the processing module 701 maps the selected spread spectrum data sequence to the Q subframes.

Preferably, for one subframe, the processing module 701 selects the spread spectrum data sequence to be mapped to the Q subframes according to the formula five intervals.

Preferably, the modulation module 702 maps the spread spectrum data sequence to the time-frequency resource for one spread spectrum data sequence of one subframe, and modulates the spread spectrum data sequence on the time-frequency resource to generate an OFDM symbol.

Preferably, the modulation module 702 maps the spread spectrum data sequence to the time-frequency resource for one spread spectrum data sequence of one subframe, and modulates the spread spectrum data sequence on the time-frequency resource to generate an OFDM symbol;

The spread spectrum data sequence of the same set of complex symbol data is mapped to different time-frequency resources.

Preferably, modulation module 702 maps the sequence of spread spectrum data to all or part of the time-frequency resources.

Preferably, the modulation module 702 maps the spread spectrum data sequence corresponding to one complex symbol data to the time domain manner. Or mapping the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of the same OFDM symbol in a frequency domain manner; or using a combination of time domain and frequency domain, A spread spectrum data sequence corresponding to one complex symbol data is mapped to a plurality of subcarriers of a plurality of OFDM symbols.

Preferably, the modulation module 702 determines the time-frequency resources occupied in each subframe according to the transmission parameters.

Preferably, the processing module 701 determines the Q value based on the transmission parameters.

As shown in FIG. 8, the network side device of the system for performing uplink transmission according to the embodiment of the present invention includes: an extraction module 801, a combination module 802, and a despreading module 803.

The extracting module 801 is configured to extract a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, and Q is a positive integer;

a combining module 802, configured to combine the spread spectrum data sequences of the Q subframes to obtain a complete spread spectrum data sequence of the complex symbol data;

The despreading module 803 is configured to despread the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data.

Preferably, the extracting module 801 extracts the spread spectrum data sequence on the specific time domain resource in the Q subframes in the time domain manner, or extracts the spread spectrum on the specific frequency domain resource in the Q subframes by using the frequency domain method. The data sequence; or the combination of the time domain and the frequency domain, extracts the spread spectrum data sequence on the specific time domain and frequency domain resources in the Q subframes.

Preferably, combining module 802 combines the sequence of spread data on Q subframes in a sub-frame order.

Preferably, the combining module 802 combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to Equation 4. Preferably, the combining module 802 selects the spread spectrum data sequences on the Q subframes to be combined.

Preferably, the combining module 802 combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to Equation 6. Preferably, the device in the embodiment of the present invention may further include: a notification module 804.

The notification module 804 is configured to configure a transmission parameter for the user equipment.

Preferably, the transmission parameters include one or more of the following information:

The Q value, the length of the spread spectrum data sequence mapped to one subframe, and the time-frequency resource occupied in each subframe.

Preferably, the notification module 804 configures the transmission parameters for the user equipment through the high-level signaling semi-static; or configures the transmission parameters for the user equipment by scheduling the control signaling of the uplink transmission.

Based on the same inventive concept, the embodiment of the present invention further provides a method for uplink transmission by a user equipment and a method for uplink transmission by a network side device, and the principle of solving the problem is similar to the system for performing uplink transmission in the embodiment of the present invention. Therefore, the implementation of these methods can be referred to the implementation of the system, and the repetition will not be repeated.

As shown in FIG. 9, the method for performing uplink transmission by a user equipment according to an embodiment of the present invention includes the following steps:

Step 901: The user equipment separately spreads each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and maps the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is a positive integer. ;

Step 902: The user equipment separately modulates the spread spectrum data sequence mapped to each subframe to generate each subframe. Corresponding transmitted signal;

Step 903: The user equipment sends the sending signal on the corresponding subframe.

Preferably, in step 901, there are many ways for the user equipment to spread the frequency of each complex symbol data. Two types are listed below:

Spreading mode 1. For a complex symbol data, the user equipment uses the spreading code corresponding to the complex symbol data to spread the complex symbol data;

In the implementation, the spreading code corresponding to each complex symbol data may be specified in the protocol, or the user equipment may be notified by the network side. For example, the corresponding spreading code may be determined according to the position of the complex symbol data in the entire data to be transmitted, that is, the correspondence between the position and the spreading code is preset, and then the corresponding spreading code is determined according to the position of the complex symbol data.

Spreading mode 2: The user equipment groups all complex symbol data; for a set of complex symbol data, spreads all the complex symbol data in the group by using the corresponding spreading code of the group; wherein, each group corresponding to the expansion The frequency codes are all different.

In the spreading mode 2, the user equipment can group the complex symbol data according to the set order, but it is necessary to ensure that the user equipment and the network side device have the same understanding of the set order.

Grouping mode 1. The user equipment sequentially selects complex symbol data for grouping.

Specifically, the user equipment sequentially divides the complex symbol data into a plurality of groups according to the set number of complex symbol data included in each group.

Preferably, for a set of complex symbol data, the user equipment determines complex symbol data in the set of data according to Equation 1. Grouping mode 2: User equipment interval is selected by complex symbol data for grouping.

Specifically, the user equipment sequentially divides the complex symbol data into a plurality of groups according to the number of intervals of the complex symbol data included in each group.

Preferably, for a set of complex symbol data, the user equipment determines complex symbol data in the set of data according to Equation 2. Preferably, in step 901, the user equipment maps the spread spectrum data sequence of each complex symbol data to the Q subframes in a plurality of ways.

Mapping mode 1. The user equipment sequentially selects the spread spectrum data sequence to be mapped to Q subframes.

Specifically, the user equipment divides the sequence of the spread spectrum data into multiple groups according to the set number of the spread data sequences mapped to one subframe, and each group is mapped to one subframe.

The number of spread spectrum data sequences mapped to one subframe may be determined according to the amount of data transmitted and the Q value. In an implementation, for one subframe, the user equipment may determine a sequence of spread data that needs to be mapped to the subframe according to Equation 3.

Mapping mode 2: The user equipment sequentially selects the spread spectrum data sequence to be mapped to the Q subframes. Specifically, the user equipment sequentially divides the spread spectrum data sequence into multiple groups according to the set number of intervals, and each group is mapped to one subframe.

The number of intervals may be equal to the number of subframes Q, or obtained by transmission parameters configured on the network side.

In an implementation, for one subframe, the user equipment can determine a sequence of spread data that needs to be mapped to the subframe according to Equation 5.

Preferably, in step 902, for a spread spectrum data sequence of one subframe, the user equipment 10 maps the spread spectrum data sequence to the time-frequency resource, and modulates the spread spectrum data sequence on the time-frequency resource to generate the OFDM symbol. .

In an implementation, the spread spectrum data sequence mapped onto each OFDM symbol is OFDM modulated or DFT-S-OFDM modulated to generate OFDM symbols.

Preferably, there are three ways for the user equipment to map the spread spectrum data sequence to the time-frequency resource, which are described separately below.

Mapping mode 1. The user equipment uses the time domain mode to map the spread spectrum data sequence corresponding to one complex symbol data to the same subcarrier of different OFDM symbols. For details, see Figure 3.

The mapping mode is as follows: The user equipment uses the frequency domain mode to map the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of the same OFDM symbol. For details, refer to FIG. 4 .

The mapping mode is as follows: The user equipment uses a combination of the time domain and the frequency domain to map the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of multiple OFDM symbols. For details, refer to FIG. 5.

Preferably, when the user equipment maps the spread spectrum data sequence to the time-frequency resource, the spread spectrum data sequence may also be mapped to all or part of the time-frequency resource.

Specifically, the user equipment may map the spread spectrum data sequence to all time-frequency resources or only to part of the time-frequency resources by selecting the length of the spread spectrum data sequence mapped into one subframe. For the latter, multiple data symbols of the user equipment can be simultaneously transmitted on different time-frequency resources. For example, four data symbols are respectively spread-spread mapped to four time-frequency regions. See Figure 6 for details.

Among them, different time-frequency regions may also separately transmit data symbols of different user equipments.

In an implementation, the user equipment needs to perform channel coding, scrambling and modulation mapping before spreading the complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, as shown in Fig. 1. specific:

Channel coding: The source data block contains bit bit data 0),...^(^ _3⁄4 -1). After channel coding, the data block length is Mbit bits, 6(0),...,6 (M _bit _l) ;

The scrambled channel-encoded data block ( ^Q ), '", ( it -!) is scrambled to generate the scrambled data block b{0 ... M _hit - \)

Constellation mapping: scrambled data blocks (0),...,^(;M _bit -1) generate complex symbol data blocks i (0),...,i (M _sym _l) via constellation mapping , contains M _sym complex symbol data. The specific mapping method can be BPSK.

QPSK, 16QAM, 64QAM, etc. The user equipment and the network side device may perform the foregoing transmission process according to the transmission parameter.

In the implementation, the transmission parameter may be specified in the protocol in advance, or may be configured by the network side device; part of the information in the transmission parameter may be specified by the protocol, and part of the information is configured by the network side device. Regardless of which method is used, it is only necessary to ensure that the parameters determined by the user equipment and the network side device for uplink transmission are the same.

For the network side device, since the transmission parameters of the user equipment are known, it is known to which subframes the user equipment maps the data to, and correspondingly, the network side device can obtain the data from the user equipment from the corresponding subframe after grouping. After decomposing the combined data, the receiving process is performed.

As shown in FIG. 10, the method for performing uplink transmission by the network side device according to the embodiment of the present invention includes the following steps: Step 1010: The network side device extracts a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data The sequence corresponds to the same complex symbol data, and Q is a positive integer;

Step 1011: The network side device combines the spread spectrum data sequences of the Q subframes to obtain a complete spread spectrum data sequence of the complex symbol data.

Step 1012: The network side device de-spreads the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data.

Preferably, if the user equipment sequentially selects the spread spectrum data sequence to be mapped to the Q subframes, in step 1011, the network side device combines the spread spectrum data sequences on the Q subframes in a subframe order.

For example, if the length of the spread spectrum data sequence mapped by each subframe is 10, in the combined data sequence, the 1st to 10th data is the spread spectrum data sequence in the 1st subframe, and the 11th to 20th data is the 2nd child. A sequence of spread spectrum data on a frame, and so on.

The length of the spread data sequence mapped to one subframe may be determined according to the length of the spread data sequence and the Q value. In an implementation, the network side device combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to Equation 4. Preferably, if the user equipment interval selects the spread spectrum data sequence to be mapped to the Q subframes, in step 1011, the network side device interval selects the spread spectrum data sequences on the Q subframes for combination.

For example, the length of the spread spectrum data sequence mapped by each subframe is 30, and there are 10 subframes in total. If the number of the set intervals is 10, the first spread spectrum data of each subframe of 1 to 10 subframes is sequentially arranged. Combining the first to the tenth bits of the spread spectrum data sequence, the second spread spectrum data of each subframe of the first subframe to the tenth subframe is ranked from the 11th to the 20th bits of the combined data, and so on. Finally, the sequence of the spread spectrum data is combined.

In an implementation, the network side device selects the spread spectrum data sequence on the Q subframes according to the formula six intervals for combination. Preferably, if the user equipment uses the time domain mode, the spread spectrum data sequence corresponding to one complex symbol data is mapped to the same subcarrier of different OFDM symbols, and in step 1010, the network side device uses the time domain mode in the Q subframes. The spread spectrum data sequence is extracted on a specific time domain resource within.

Preferably, if the user equipment uses the frequency domain mode, the spread spectrum data sequence corresponding to one complex symbol data is mapped to multiple subcarriers of the same OFDM symbol. In step 1010, the network side device uses the frequency domain mode. Q subframes The spread spectrum data sequence is extracted on a specific frequency domain resource.

Preferably, if the user equipment uses a combination of time domain and frequency domain, the spread spectrum data sequence corresponding to one complex symbol data is mapped to multiple subcarriers of multiple OFDM symbols, and in step 1010, the network side device is used. The spread spectrum data sequence is extracted on a specific time domain and frequency domain resource within Q subframes by combining the time domain and the frequency domain.

Preferably, after the network side device obtains the despread data corresponding to the complex symbol data, the despread data needs to be received and processed. Specifically, the despread data corresponding to the complex symbol data includes:

Demodulation, descrambling, and decoding processing.

The user equipment and the network side device may perform the foregoing transmission process according to the transmission parameter.

If the network side device is required for configuration, preferably, the network side device configures a transmission parameter for the user equipment.

Specifically, the network side device configures the transmission parameter for the user equipment by using the high-level signaling semi-static, or configures the transmission parameter for the user equipment by scheduling the control signaling of the uplink transmission.

It should be noted that the embodiments of the present invention are not limited to the foregoing two configurations, and other embodiments capable of configuring transmission parameters for the user equipment are applicable to the embodiments of the present disclosure.

The network side device in the embodiment of the present invention may be a station (such as a macro base station, a home base station, etc.), an RN device, or another network side device.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart. The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the < Therefore, it is intended that the appended claims be interpreted as including

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments. Therefore, it is intended that the present invention cover the modifications and variations of the invention, and the modifications and variations of the present invention.

Claims

Rights request

A method for performing uplink transmission, characterized in that the method comprises:

The user equipment transmits a transmission signal on a corresponding subframe.

2. The method according to claim 1, wherein the user equipment performs spreading on each complex symbol data, including:

For a complex symbol data, the user equipment uses the spreading code corresponding to the complex symbol data to spread the complex symbol data;

3. The method according to claim 1, wherein the user equipment performs spreading on each complex symbol data, including:

The user equipment groups all complex symbol data;

For a set of complex symbol data, the user equipment uses the corresponding spreading code of the group to spread all the complex symbol data in the group;

The corresponding spreading codes of each group are all different.

The method according to claim 2 or 3, wherein the spreading code corresponding to the complex symbol data is determined by the received network side indication, or determined according to a preset rule.

5. The method according to claim 4, wherein the user equipment groups all complex symbol data, including:

The user equipment sequentially selects complex symbol data for grouping.

6. The method according to claim 5, wherein, for a set of complex symbol data, the user equipment determines complex symbol data in the set of data according to the following formula:

^{x p {n) = d {} p M ^ m + n), wherein the first _η complex symbols of data of ρ _{group; d (xM ^ m + n} ) is the first;? χΜ ^ + "complex-symbol data ; is the number of complex symbol data included in the complex symbol data of the ρ group; p is the number of the group, = 0, 1, ..., - 1 , which is the number of packets; n is the complex symbol data of the p-th group Numbering,

7. The method as claimed in claim 6, characterized in that the number p ^^ _¾ of the first set of data symbols comprises multiplexing complex symbols indicative of the determined data received by the network side, or by the

= _sym IP formula is determined; where ^M _S ym is the number of complex symbol data.

8. The method according to claim 3, wherein the user equipment groups all complex symbol data, including:

The user equipment selects complex symbol data for grouping.

9. The method according to claim 8, wherein, for a set of complex symbol data, the user equipment determines complex symbol data in the set of data according to the following formula:

x ^p (n) = d(p + n P) - where is the nth complex symbol data of the pth group; d(f + rv< ) is ^ p + nxP complex symbol data; p is the number of the group , =0,1,.." — 1 , ^ is the number of groups; n is the number of the p-th complex symbol data, " = 0,1,.." 1^^— 1 , is the p-th group complex symbol The number of complex symbol data included in the data, ^M ^m = ^M _Sy m ^{/ P} , ^sym is the number of complex symbol data.

The method according to claim 1, wherein the user equipment maps the spread spectrum data sequence of each complex symbol data to the Q subframes, including:

The user equipment sequentially selects a sequence of spread spectrum data to be mapped to Q subframes.

The method according to claim 10, wherein, for one subframe, the user equipment determines, according to the following formula, a sequence of spread spectrum data that needs to be mapped to the subframe:

z{q, k) = y(q XM _sf + k) where is the kth spread spectrum data sequence mapped onto subframe _q ; _y (gxM _s is the xth _s/ + spread spectrum data sequence ; is the subframe number, = ο, ι,···, ρ_ι; is the number of the spread spectrum data sequence mapped to a sub-frame, k = 0X..., M _sf - 1 , M _sf is mapped to each The length of the spread spectrum data sequence within a sub-frame.

The method according to claim 1, wherein the user equipment maps the spread data sequence of each complex symbol data to the Q subframes, including:

The user equipment interval selects a spread spectrum data sequence to be mapped to Q subframes.

13. The method according to claim 12, wherein, for one subframe, the user equipment determines a sequence of spread spectrum data that needs to be mapped to the subframe according to the following formula: z(q, k) = y(q -^ kxQ) where is the kth spread spectrum data sequence mapped onto subframe _q ; _ + Α: χρ) is the + ^χ δ spread spectrum data sequence; g Is the subframe number, = 0,1,···, is the number of the spread spectrum data sequence mapped into one subframe, k = ox..., M _sf — i , M _sf is mapped into each subframe The length of the spread spectrum data sequence.

The method according to claim 1, wherein the user equipment separately modulates the spread data sequence mapped to each subframe to generate a transmit signal corresponding to each subframe, including:

For a spread spectrum data sequence of one subframe, the user equipment maps the spread spectrum data sequence to a time-frequency resource, and modulates the spread spectrum data sequence on the time-frequency resource to generate an OFDM symbol.

The method according to claim 3, wherein the user equipment separately modulates the spread data sequence mapped to each subframe to generate a transmit signal corresponding to each subframe, including:

For a spread spectrum data sequence of one subframe, the user equipment maps the spread spectrum data sequence to a time-frequency resource, and modulates the spread spectrum data sequence on the time-frequency resource to generate an OFDM symbol;

The method according to claim 14 or 15, wherein the mapping, by the user equipment, the sequence of the spread spectrum data to the time-frequency resource comprises:

The user equipment maps the sequence of spread spectrum data to all or part of a time-frequency resource.

The user equipment maps the spread spectrum data sequence corresponding to one complex symbol data to different time domain manners.

On the same subcarrier of the OFDM symbol; or

The user equipment uses a frequency domain method to map a spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of the same OFDM symbol; or

The user equipment maps the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of multiple OFDM symbols by using a combination of time domain and frequency domain.

The method according to claim 14 or 15, wherein before the user equipment maps the sequence of the spread spectrum data to the time-frequency resource, the method further includes:

The user equipment determines a time-frequency resource occupied in each subframe according to the transmission parameter.

The method according to any one of claims 1 to 3, wherein the user equipment maps the spread spectrum data sequence of each complex symbol data to the Q subframes, and further includes:

The user equipment determines a Q value according to the transmission parameter.

20. A method for performing uplink transmission, the method comprising:

The network side device despreads the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data.

The method according to claim 20, wherein the network side device extracts the spread spectrum data sequence on a specific time-frequency resource in the Q subframes, including:

The network side device extracts a spread spectrum data sequence on a specific time domain resource in the Q subframes in a time domain manner; or

The network side device extracts a spread spectrum data sequence on a specific frequency domain resource in the Q subframes by using a frequency domain method; or

The network side device extracts the spread spectrum data sequence in a specific time domain and frequency domain resource in the Q subframes by using a combination of the time domain and the frequency domain.

The method according to claim 20, wherein the network side device combines the spread data sequences of the Q subframes, including:

The network side device combines the spread spectrum data sequences on the Q subframes in a subframe order.

The method according to claim 22, wherein the network side device combines the spread spectrum data sequences on the Q subframes in a subframe order according to the following formula:

= r{q, k) . where : W) is the combined Wth spread spectrum data sequence; r (g, is the kth spread spectrum data sequence on subframe q; q = _ ^{m 1 M} _S f \ Λ ^{= m} - q ^{x M} _S f , is the length of the sequence of spread spectrum data mapped into each sub-frame.

The network side device interval selects the spread spectrum data sequence on the Q subframes for combination.

The method according to claim 24, wherein the network side device combines the spread spectrum data sequences on the Q subframes in a subframe order according to the following formula:

x(m) = rq, k) . where is the combined Wth spread spectrum data sequence; (g, is the kth spread spectrum on subframe q The data sequence; k = [ nl Q\ , q = m - kxQ , Q is the number of sub-frames.

The method according to any one of claims 20 to 25, wherein before the network side device despreads the spread spectrum data sequence on the Q subframes, the method further includes:

The network side device configures a transmission parameter for the user equipment.

27. The method of claim 26, wherein the transmission parameter comprises one or more of the following information:

The method according to claim 26, wherein the network side device configures transmission parameters for the user equipment, including:

The network side device is semi-statically configured by high layer signaling to configure transmission parameters for the user equipment; or

The network side device configures transmission parameters for the user equipment by scheduling control signaling of the uplink transmission.

A user equipment for performing uplink transmission, where the user equipment includes:

The user equipment according to claim 29, wherein the processing module is configured to: perform spreading on the complex symbol data by using a spreading code corresponding to the complex symbol data for one complex symbol data; The spreading codes corresponding to each complex symbol data are all the same or all different or partially identical.

The user equipment according to claim 29, wherein the processing module is specifically configured to: group all complex symbol data; and use a set of corresponding spreading codes for the group of complex symbol data All complex symbol data in the spectrum is spread; wherein each group of corresponding spreading codes is different.

The user equipment according to claim 30 or 31, wherein the spreading code corresponding to the complex symbol data is determined by the received network side indication, or determined according to a preset rule.

The user equipment according to claim 32, wherein the processing module is specifically configured to: sequentially select complex symbol data for grouping.

34. The user equipment according to claim 33, wherein, for a set of complex symbol data, the processing module determines complex symbol data in the set of data according to the following formula:

^{x p {n) = d {} p M ^ m + n), where _η is the complex symbols of the first data set _{ρ; d (M ^ m + n} ) ;?xM^+" complex symbol data; is the number of complex symbol data included in the p-th complex symbol data; p is the group number, =0,1,..., — 1, ^ is grouped Quantity; n is the number of the complex symbol data of the p-th group,

" = 0,1,···,Μ - 1.

35, user apparatus as claimed in claim 34, wherein the number ^^ _¾ of the first set of complex symbol ρ complex symbols included in the data indicative of the determined data received by the network side, or by a ⁼ Μ Ι Ρ Ά OK;

Μ

Where ^sym is the number of complex symbol data.

The user equipment according to claim 31, wherein the processing module is specifically configured to: select and select complex symbol data for grouping.

37. The user equipment according to claim 36, wherein, for a set of complex symbol data, the processing module determines complex symbol data in the set of data according to the following formula:

x ^p (n) = d(p + n P) - where is the nth complex symbol data of the pth group; d(p + nxP"} is the p + nxP complex symbol data; p is the number of the group , =0,1,.." — 1, ^ is the number of groups; _n is the number of the p- _th complex symbol data, and " = is the complex symbol data included in the p- _th complex symbol data.

The number, ^M ^m = ^M _Sy m ^{/ P} , ^sym is the number of complex symbol data.

The user equipment according to claim 29, wherein the processing module is specifically configured to: sequentially select the spread spectrum data sequence to be mapped to the Q subframes.

39. The user equipment according to claim 38, wherein, for one subframe, the processing module determines a spread spectrum data sequence that needs to be mapped to the subframe according to the following formula:

z{q, k) = y(qx M _sf + k) where is the kth spread spectrum data sequence mapped onto subframe _q ; _y (gxM _s is the xth _s/ + spread spectrum data sequence ; is the subframe number, = ο, ι,···, ρ_ι; is the number of the spread spectrum data sequence mapped to a sub-frame, k = 0X..., M _sf - 1 , M _sf is mapped to each The length of the spread spectrum data sequence within a sub-frame.

The user equipment according to claim 29, wherein the processing module is specifically configured to: map the spread spectrum data sequence to the Q subframes.

The user equipment according to claim 40, wherein, for one subframe, the processing module root The sequence of spread spectrum data that needs to be mapped to the subframe is determined according to the following formula:

z(q, k) = y(q -^ kxQ) where is the kth spread spectrum data sequence mapped onto the subframe _q ; _ + Α: χ ρ) is the + ^χ δ spread spectrum data sequence; g is the subframe number, = 0,1,···, is the number of the spread spectrum data sequence mapped into one subframe, = 0,l,...,M _S/ — 1 , M is mapped to each The length of the spread spectrum data sequence within a sub-frame.

The user equipment according to claim 29, wherein the modulation module is specifically configured to: map the spread spectrum data sequence to a time-frequency resource for a spread spectrum data sequence of one subframe, and The spread spectrum data sequence on the time-frequency resource is modulated to generate an OFDM symbol.

The user equipment according to claim 31, wherein the modulation module is specifically configured to: map the spread spectrum data sequence to a time-frequency resource for a spread spectrum data sequence of one subframe, and And modulating the spread spectrum data sequence on the time-frequency resource to generate an OFDM symbol;

The user equipment according to claim 42 or 43, wherein the modulation module is specifically configured to: map the spread spectrum data sequence to all or part of time-frequency resources.

The user equipment according to claim 42 or 43, wherein the modulation module is specifically configured to: map the spread spectrum data sequence corresponding to one complex symbol data to the same sub-symbol of different OFDM symbols in a time domain manner Or mapping the spread spectrum data sequence corresponding to one complex symbol data to multiple subcarriers of the same OFDM symbol in a frequency domain manner; or using a combination of time domain and frequency domain, corresponding to a complex symbol data The spread spectrum data sequence is mapped onto a plurality of subcarriers of a plurality of OFDM symbols.

The user equipment according to claim 42 or 43, wherein the modulation module is further configured to: determine a time-frequency resource occupied in each subframe according to the transmission parameter.

The user equipment according to any one of claims 29 to 31, wherein the processing module is further configured to: determine a Q value according to the transmission parameter.

48. A network side device that performs uplink transmission, where the network side device includes:

The despreading module is configured to despread the complete spread spectrum data sequence to obtain despread data corresponding to the complex symbol data.

The network side device according to claim 48, wherein the extraction module is specifically configured to: Extracting a spread spectrum data sequence on a specific time domain resource in Q subframes in a time domain manner; or extracting a spread spectrum data sequence on a specific frequency domain resource in Q subframes by using a frequency domain method; The spread spectrum data sequence is extracted on a specific time domain and frequency domain resource within Q subframes by combining the time domain and the frequency domain.

The network side device according to claim 48, wherein the combining module is specifically configured to: combine the spread spectrum data sequences on the Q subframes in a subframe order.

The network side device according to claim 50, wherein the combining module combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to the following formula:

x(m) = rq, k) . where is the combined first spread spectrum data sequence; W is the kth spread spectrum data sequence on subframe q; q = _ ^{m 1} M _S f \ Λ ^{= m} - q ^{x M} _S f , M is the length of the sequence of spread spectrum data mapped into each sub-frame.

The network side device according to claim 48, wherein the combining module is specifically configured to: select and combine the spread spectrum data sequences on the Q subframes.

The network side device according to claim 52, wherein the combining module combines the spread spectrum data sequences on the Q subframes in a sub-frame order according to the following formula:

x(m) = rq, k) . where is the combined first spread spectrum data sequence; W is the kth spread spectrum data sequence on subframe q; k = [ nl Q\ , q = m - kxQ , _Q is the number of children.

The network side device according to any one of claims 48 to 53, wherein the network side device further comprises: a notification module, configured to configure a transmission parameter for the user equipment.

The network side device according to claim 54, wherein the transmission parameter comprises one or more of the following information:

The network side device according to claim 55, wherein the notification module is specifically configured to: configure a transmission parameter for the user equipment by using high-level signaling semi-static; or control signaling by scheduling uplink transmission , configuring transmission parameters for the user equipment.

57. A system for performing uplink transmission, characterized in that the system comprises:

a user equipment, configured to separately spread each complex symbol data to obtain a spread spectrum data sequence of each complex symbol data, and map the spread spectrum data sequence of each complex symbol data to Q subframes, where Q is a positive integer And respectively modulating the spread spectrum data sequence mapped to each subframe to generate a transmission signal corresponding to each subframe, and transmitting the signal in the pair Sent on the appropriate subframe;

a network side device, configured to extract a spread spectrum data sequence on a specific time-frequency resource in the Q subframes, where the spread spectrum data sequence corresponds to the same complex symbol data, and the spread spectrum data sequences of the Q subframes are combined to obtain one The complete spread spectrum data sequence of the complex symbol data, despreading the complete spread spectrum data sequence, and obtaining despread data corresponding to the complex symbol data.