CN104995886A

CN104995886A - Information transmission method and device

Info

Publication number: CN104995886A
Application number: CN201380003745.7A
Authority: CN
Inventors: 刘德平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-12-11
Filing date: 2013-12-11
Publication date: 2015-10-21
Anticipated expiration: 2033-12-11
Also published as: WO2015085514A1; CN104995886B

Abstract

Provided are an information transmission method and an information transmission device. The method comprises: respectively conducting time-domain spreading on each data modulation symbol of n data modulation symbols of a data packet to be transmitted, and with respect to each of the data modulation symbols, conducting time domain spreading on a pilot modulation symbol, n being a positive integer which is greater than 1; and mapping the ith data modulation symbol subjected to time-domain spreading and the spread spectrum pilot modulation symbol with respect to the ith data modulation symbol onto the ith time-frequency transmission unit set and sending same, i being a positive integer and the value thereof being from 1 to n, and the ith time-frequency transmission unit set comprising N time-frequency transmission units. The embodiments of the present invention can avoid the reduction of de-spreading performance and can more flexibly coordinate the signal transmitting time of a user equipment.

Description

Information transmission method and device

Information transferring method and engineering device technique field

The present invention relates to the communications field, and more particularly, to a kind of information transferring method and device.Background technology

OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology is to break a channel into some orthogonal sub-channels, high-speed data signal is converted into parallel low speed sub-data flow, is modulated to and is transmitted on each of the sub-channels.Signal bandwidth on per sub-channels, which is less than in the correlation bandwidth of channel, therefore every sub-channels, can regard flatness decline as, so as to eliminate intersymbol interference.And because the bandwidth of every sub-channels is only the sub-fraction of former channel width, channel equalization becomes relatively easy.OFDM symbol length, i.e. T_symbol, refer to each OFDM symbol duration from the perspective of time domain.In practice, in order to eliminate intersymbol interference, also embedding sew is circulated in intersymbol insertion（Cyclic Prefix, CP), i.e., by inverse fast Fourier transform（Inverse Fast Fourier Transform, IFFT) after transmission data pass through parallel serial conversion, the symbol of the CP length positioned at most end is copied to the initiating terminal of OFDM symbol, for eliminating intersymbol interference.At this moment, the length of actual each OFDM symbol is changed into T_symbol+T_cp, wherein, T_cp is CP length.

Third generation partner program（3rd Generation Partnership Project, 3 GPP) Long Term Evolution (Long Term Evolution,) and enhanced LTE (LTE-Andanced LTE, LTE-A up use single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access), SC-FDMA), a kind of OFDM variant, a up subframe（), including 2 time slots subframe（), slot totally 14 OFDM symbols.The OFDM symbol of the 4th of the 1st time slot and the 2nd time slot is frequency pilot sign during data transfer, and remaining is data symbol.When upstream control signaling is transmitted, the 3rd, 4,5 OFDM symbol that to have a kind of frame structure be the 1st time slot and the 2nd time slot is frequency pilot sign, and remaining is the OFDM symbol that control signaling takes.Frequency pilot sign takes and data symbol on frequency domain（Or controlling symbols）A cyclic shift of one Zad off chu sequence of transmitting is selected on identical frequency band, frequency domain according to actual band width；On the data symbol of control signaling and it will be multiplied by frequency pilot sign in time domain When i or spreading code.

Data modulation is carried out before initial data transmitting, digital modulation can be divided into digital am, digital phase moudlation, frequency-shift keying.The data of transmitting are made up of symbol, with the difference of the modulation technique of use, and the bit number that modulation symbol is mapped is also different, for example, QPSK（Quadrature Phase Shift Keying, QPSK) modulation symbol is two bits, 16 quadrature amplitude modulations（Quadrature Amplitude Modulation, QAM) modulation symbol is 4 bits.

Pilot tone or reference signal（Reference signal) known array or modulation symbol that are inserted to do channel estimation when being the relevant detection of system.Receiving terminal is according to the receive information on the running time-frequency resource of pilot tone, with reference to the known transmitting information carried in pilot signal, it is estimated that the running time-frequency resource upper signal channel response that pilot tone takes, then time domain and/or frequency domain difference are passed through, the channel response on the running time-frequency resource of data symbol occupancy is obtained, so as to obtain the information of transmitting terminal transmitting according to receive information.

Internet of Things（Machine to Machine, M2M), it is set forth in earliest 1999.Cylinder list is compared in definition：All items are connected by information sensing device with internet, Weigh sensor and management is realized.They are combined with internet, it is possible to achieve the long-range perception and control of all items, thus the production and living system of the more wisdom of generation one.It is more huger than existing internet, is widely used in the multiple fields such as intelligent grid, intelligent transportation, environmental protection, government work, public safety, smart home, intelligent fire, industry monitoring, old man's nursing, personal health.

Standardization body 3GPP specially sets up project team, and research is directed to machine type communication（Machine Type Communication, MTC) equipment introducing and need to mobile communications network carry out enhancing and optimization.Vodafone proposes that many M2M equipment, such as ammeter may be positioned in basement etc. and cover poor place, for these equipment, it is desirable to which covering, which increases to maximum 20dB, could meet requirement.Even if user equipment sends sequence using maximum transmission power always, but the power that target BS is received does not reach target received power still, or even well below target received power.And in this case, it is exactly user equipment in multiple time tranfer units that one, which is compared the direct method of cylinder list,（Time Transmission Interval, TTI) (Τ refers to subframe subframe in a 3 gpp system) transmission, base station side collects and merges with reach raising received signal to noise ratio purpose.For example： Time tranfer element number coverage enhancement amount

( #TTI ) ( dB )

10 (benchmarks)

2 3

4 5

Number of repetition is shared time tranfer unit and corresponding coverage enhancement amount（DB) there is corresponding relation in information, and this corresponding relation is pre-defined after being obtained by mathematical computations or simulation means.Because the coverage condition difference of actual subscriber device is blunt big, it is not all the need for the user equipment of coverage enhancement be required for 20dB so many compensation, actual conditions are to never need to coverage enhancement to an interval of 20dB coverage enhancements.But the quantity of the time tranfer unit of the user equipment of different coverage enhancements needs is different, it is necessary to which the time tranfer unit of the few user equipment needs of coverage enhancement is also few, because can obtain the coverage enhancement compensation of needs in shorter accumulated time.So the user equipment of the different coverage enhancements of needs can be grouped so that the user equipment for needing coverage enhancement quantity equal and close aggregates into one group, using unified number of repetition.Scope so from coverage enhancement of the OdB coverage enhancement to 20dB is segmented into some groups.Such as [5dB, 10dB, 15dB, 20dB].Certainly it is not added with distinguishing, system can also only provide a kind of repetition numerical value of coverage enhancement, such as 15dB or 20dB.

As described above, when the data of user equipment need the repetition transmission of a number of time tranfer unit, the spectrum efficiency of system is caused to decline, in order to improve the spectrum efficiency of system, the block spread spectrum of time domain is a kind of conventional method.For example, the packet that different user devices repeat transmission can take identical time and frequency resource, distinguished using different orthogonal or quasi-orthogonal spreading codes, the length of spreading code is equal to number of repetition, same packet is repeating to be multiplied by an element for corresponding to spreading code every time, the data of different user devices can be so multiplexed in same resource, spectrum efficiency is improved.The data of different user devices are extracted according to different spreading codes after the data that multiple user equipment time-frequency domains are multiplexed together are received in base station.

If above method channel time-varying, then the orthogonality between the spreading code of multiple user equipmenies is just Destroy, decoding of the influence base station to the packet of different user devices.I.e. moreover, for coverage enhancement scene, it is necessary to the number of repetition time on extend is also longer, it is easier to exceed the correlated time of channel, influences frequency expansion sequence orthogonality, and then influence being properly received and decoding for base station, so as to cause performance loss.The content of the invention

The embodiments of the invention provide a kind of information transferring method, user equipment and base station, to avoid receiving side from de-spreading hydraulic performance decline and can be with the signal transmission time of more flexible coordinates user equipment.

First aspect there is provided a kind of information transferring method, including：

Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is subjected to mapping transmission in such a way：

The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

With reference to first aspect, in the first possible realization of first aspect, each data modulation symbol in the n data modulation symbol by packet to be launched carries out time domain spread spectrum, and before carrying out time domain spread spectrum to pilot modulation symbol, this method also includes：

Receive the configured information of base station transmission, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

With reference to the first possible implementation of first aspect or first aspect, in second of possible implementation of first aspect, the N is equal to 1;

The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped to i-th of time-frequency transmission unit collection and closes and send to base station by this, including：

Symbol included by symbol and the pilot modulation symbol of the spread spectrum included by i-th of data modulation symbol of the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

With reference to the first possible implementation of first aspect or first aspect, in the third possible implementation of first aspect, each data in the n data modulation symbol by packet to be launched Modulation symbol carries out time domain spread spectrum, and carries out time domain spread spectrum to pilot modulation symbol, including：Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of the M include M element, and the long time domain spreading codes of the m include m element；The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped to i-th of time-frequency transmission unit collection in the following manner closes and send and give the base station：

On h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and it is sent to the base station, the h is integer and value from 1 to N.

With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, on h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol that the h times time domain is spread and the h times time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and the base station is sent to, including：

Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped in the OFDM symbol that h-th of time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

With reference to first aspect or first aspect the first to any possible implementation in the 4th kind, in the 5th kind of possible implementation of first aspect, the each data modulation symbol and the pilot modulation symbol of spread spectrum spread in the n data modulation symbol by spread spectrum is carried out before mapping transmission, and this method also includes：

Frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

Second aspect there is provided a kind of information transferring method, including：

Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

Time domain spreading code and the pilot modulated of spread spectrum that the n data modulation symbol based on spread spectrum is used The time domain spreading code that symbol is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum；

The n soft demodulation symbols are decoded and verified.

With reference to second aspect, in the first possible implementation of second aspect, at this before the corresponding n time-frequency transmission unit collection of user equipment closes reception signal, this method also includes：

Configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and mapping spread spectrum data modulation symbol and spread spectrum pilot modulation symbol time-frequency transmission unit information.

With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation of second aspect, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Symbol included by i-th of data modulation symbol of kth time time domain spread spectrum and the symbol included by the pilot modulation symbol of kth time time domain spread spectrum are mapped on k-th of time-frequency transmission unit in i-th of time-frequency transmission unit set in staggered mode, and the k is the positive integer less than or equal to N.

With reference to the first or second of possible implementation of second aspect or second aspect, in the third possible implementation of second aspect, in the signal from reception, despreading detects the individual soft demodulation symbols of the corresponding n of n data modulation symbol of spread spectrum, including：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of the M include M element, the long time domain spreading codes of the m include m element；Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols. With reference to the first or second of possible implementation of second aspect or second aspect, in the 4th kind of possible implementation of second aspect, in the signal from reception, despreading detects the individual soft demodulation symbols of the corresponding n of n data modulation symbol of spread spectrum, including：

The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol of the spread spectrum time domain spreading code used and the frequency domain spread spectrum code used, from the signal of reception, despreading detects the n soft demodulation symbols.

There is provided a kind of user equipment, including spectrum-spreading unit, map unit and transmitting element for the third aspect；Wherein,

The spectrum-spreading unit is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The map unit and the transmitting element are respectively used to：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is mapped and sent in such a way：The map unit is closed for the pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum to be mapped into i-th of time-frequency transmission unit collection, and the transmitting element is used to the map unit being mapped in i-th of data modulation symbol of the spread spectrum that i-th of time-frequency transmission unit collection close and the pilot modulation symbol of spread spectrum is sent to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

With reference to the third aspect, in the first possible realization of the third aspect, the user equipment also includes receiving unit；Wherein,

The receiving unit is used for：Each data modulation symbol in the n data modulation symbol is subjected to time domain spread spectrum in the spectrum-spreading unit, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information of base station transmission, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

With reference to the first possible implementation of the third aspect or the third aspect, in second of possible implementation of the third aspect, the N is equal to 1;

The map unit specifically for：Symbol included by symbol and the pilot modulation symbol of the spread spectrum included by i-th of data modulation symbol of the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode.

With reference to the first possible implementation of the third aspect or the third aspect, the 3rd of the third aspect the In kind possible implementation, the spectrum-spreading unit specifically for：Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of the M include M element, and the long time domain spreading codes of the m include m element；

The map unit specifically for：The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped into i-th of time-frequency transmission unit collection in the following manner to close：The pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set, the h is integer and value from 1 to N.

With reference to the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect, the map unit specifically for：

Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped in the OFDM symbol that h-th of time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode.

With reference to the third aspect or the third aspect the first to any possible implementation in the 4th kind, in the 5th kind of possible implementation of the third aspect, the spectrum-spreading unit is additionally operable to：

Before each data modulation symbol spread and the pilot modulation symbol spread are mapped and sent in the map unit and the transmitting element respectively the n data modulation symbol by spread spectrum, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

Fourth aspect conciliates code check unit there is provided a kind of base station, including receiving unit, despread unit；Wherein,

The receiving unit is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The despread unit is used for：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, in the signal received from the receiving unit, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum； The decoding verification unit is used for：The n soft demodulation symbols are decoded and verified.

With reference to fourth aspect, in the first possible implementation of fourth aspect, the base station also includes transmitting element；Wherein,

The transmitting element is used for：In the receiving unit before the n time-frequency transmission unit collection closes and receive the signal, configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and mapping spread spectrum data modulation symbol and spread spectrum pilot modulation symbol time-frequency transmission unit information.

With reference to the first possible implementation of fourth aspect or fourth aspect, in second of possible implementation of fourth aspect, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiving unit is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

With reference to the first or second of possible implementation of fourth aspect or fourth aspect, in the third possible implementation of fourth aspect, the despread unit specifically for：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of the M include M element, the long time domain spreading codes of the m include m element；Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols. With reference to the first or second of possible implementation of fourth aspect or fourth aspect, in the 4th kind of possible implementation of fourth aspect, the despread unit specifically for：

There is provided a kind of user equipment, including processor and transmitter for 5th aspect；Wherein, the processor is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The transmitter is used for：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is subjected to mapping transmission in such a way：The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

With reference to the 5th aspect, in the first possible realization of the 5th aspect, the user equipment also includes receiver；Wherein,

The receiver is used for：Each data modulation symbol in the n data modulation symbol is carried out time domain spread spectrum by reason device in this place, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information of base station transmission, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

With reference to the 5th aspect or the first possible implementation of the 5th aspect, in second of possible implementation of the 5th aspect, the N is equal to 1;

The transmitter specifically for：Symbol included by symbol and the pilot modulation symbol of the spread spectrum included by i-th of data modulation symbol of the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

With reference to the 5th aspect or the 5th aspect the first possible implementation, the 5th aspect the third possible implementation in, the processor specifically for：By the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and by the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, and the long time domain spreading codes of the M include M Element, the long time domain spreading codes of the m include m element；

The transmitter specifically for：The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped to i-th time-frequency transmission unit collection in the following manner closes and send and give the base station：On h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and it is sent to the base station, the h is integer and value from 1 to N.

With reference to the 5th aspect the third possible implementation, the 5th aspect the 4th kind of possible implementation in, the transmitter specifically for：

With reference to the 5th aspect or the 5th aspect the first to any possible implementation in the 4th kind, in the 5th kind of possible implementation of the 5th aspect, the processor is additionally operable to：The each data modulation symbol and the pilot modulation symbol of spread spectrum spread in n data modulation symbol of the transmitter by spread spectrum is carried out before mapping transmission, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

There is provided a kind of base station, including processor and receiver for 6th aspect；Wherein,

The receiver is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The processor is used for：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, and the n soft demodulation symbols are decoded and verified.

With reference to the 6th aspect, in the first possible implementation of the 6th aspect, the base station also includes transmitter；Wherein, the transmitter is used for：Kept pouring in the receiver when the user equipment is corresponding n On defeated unit set before reception signal, configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and mapping spread spectrum data modulation symbol and spread spectrum pilot modulation symbol time-frequency transmission unit information.

With reference to the 6th aspect or the first possible implementation of the 6th aspect, in second of possible implementation of the 6th aspect, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiver is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

With reference to the 6th aspect or the first or second of possible implementation of the 6th aspect, in the third possible implementation of the 6th aspect, the processor specifically for：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of the M include M element, the long time domain spreading codes of the m include m element；Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols.

With reference to the 6th aspect or the first or second of possible implementation of the 6th aspect, in the 4th kind of possible implementation of the 6th aspect, the processor specifically for：

The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol spread the time domain spreading code used and the frequency domain spread spectrum code used, From the signal of reception, despreading detects the n soft demodulation symbols.

Therefore, the embodiment of the present invention passes through with modulation symbol（Data modulation symbol or pilot modulation symbol）Spread for base unit, because the basic granularity of spread spectrum diminishes, the multiplicating of block spread spectrum data bag can be avoided to exceed after the correlated time of channel between the receiving side user equipment that causes non-orthogognal signal thus hydraulic performance decline is de-spread.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly, cylinder will be made to the required accompanying drawing used in embodiment or description of the prior art below singly to introduce, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the indicative flowchart of information transferring method according to embodiments of the present invention.

Fig. 2 is the data modulation symbol and pilot modulation symbol mapping graph according to another embodiment of the present invention.Fig. 3 is the indicative flowchart of the information transferring method according to another embodiment of the present invention.

Fig. 4 is the data modulation symbol mapping graph according to another embodiment of the present invention.

Fig. 5 is the schematic block diagram of the user equipment according to another embodiment of the present invention.

Fig. 6 is the schematic block diagram of the user equipment according to another embodiment of the present invention.

Fig. 7 is the schematic block diagram of the base station according to another embodiment of the present invention.

Fig. 8 is the schematic block diagram of the base station according to another embodiment of the present invention.

Fig. 9 is the schematic block diagram of the user equipment according to another embodiment of the present invention.

Figure 10 is the schematic block diagram of the user equipment according to another embodiment of the present invention.

Figure 11 is the schematic block diagram of the base station according to another embodiment of the present invention.

Figure 12 is the schematic block diagram of the base station according to another embodiment of the present invention.Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.

Fig. 1 is the indicative flowchart of information transferring method 100 according to embodiments of the present invention.Alternatively, This method 100 can be performed by user equipment.As shown in figure 1, this method 100 includes：

S110, time domain spread spectrum is carried out by each data modulation symbol in n data modulation symbol of packet to be launched respectively, and time domain spread spectrum is carried out to pilot modulation symbol, and n is the integer more than 1；

S120, mapping transmission is carried out by the pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum in such a way：

The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, i is positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit, and N is the integer more than or equal to 1.

Specifically, user equipment can obtain original information bits sequence（Xl, x2...), the original bit sequence then can be obtained into n data modulation symbol after adding CRC (crcl, crc2...) and channel coding modulation（Ql,Q2,...Qn);Each data modulation symbol in the n data modulation symbol can be carried out time domain spread spectrum respectively by user equipment；User equipment carries out time domain spread spectrum to pilot modulation symbol；Then, the pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum can be carried out mapping transmission in such a way by user equipment：The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped to i-th of time-frequency transmission unit collection closed and be sent to base station, wherein, i is positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit, and N is the integer more than or equal to 1.

Therefore, the embodiment of the present invention passes through with modulation symbol（Data modulation symbol or pilot modulation symbol）Spread for base unit, because the basic granularity of spread spectrum diminishes, the multiplicating of block spread spectrum data bag can be avoided to exceed after the correlated time of channel between the receiving side user equipment that causes non-orthogognal signal thus hydraulic performance decline is de-spread.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

In embodiments of the present invention, it can be when being spread to any one data modulation symbol that user equipment pilot modulation symbol, which carries out time domain spread spectrum, also pilot tone adjustment symbol can be spread, and any data modulation symbol of spread spectrum and the pilot modulation symbol spread is mapped in corresponding time-frequency transmission unit collection and closed and send to base station.Thus base station can obtain the corresponding soft demodulation symbol of data modulation symbol of the spread spectrum according to the corresponding sequence of any data modulation symbol carried on the time-frequency transmission unit sequence corresponding with the pilot modulation symbol of spread spectrum.Alternatively, in embodiments of the present invention, when each data modulation symbol is spread, the pilot modulation symbol spread can be with identical.It should be understood that in embodiments of the present invention, user equipment first can be spread to a pilot modulation symbol, and each data modulation symbol in n data modulation symbol is spread, and by any data modulation symbol of spread spectrum The corresponding time-frequency transmission unit collection of any data modulation symbol is mapped in the pilot modulation symbol of the spread spectrum to close and send to base station.Now, then pilot modulation symbol need not be spread when being spread to any pilot modulation symbol.

In embodiments of the present invention, user equipment can only carry out time domain spread spectrum to each data modulation symbol, and only carry out time domain spread spectrum to pilot modulation symbol.Then now, spread the spreading code used to data modulation symbol and pilot modulation symbol for the one-dimensional spreading code in time domain.

Or, in embodiments of the present invention, user equipment can also not only carry out time domain spread spectrum to each data modulation symbol but also carry out frequency domain spread spectrum, and not only carried out time domain spread spectrum to pilot tone adjustment symbol but also carried out frequency domain spread spectrum.Then now, spread the spreading code used to data modulation symbol and pilot modulation symbol for time-frequency two-dimensional.

In embodiments of the present invention, each data modulation symbol in n data modulation symbol of data to be transmitted bag can be done time domain spread spectrum respectively by user equipment using OFDM symbol or subframe as basic spread spectrum unit.It should be understood that subframe is also to be made up of OFDM symbol in time domain, so can also be attributed to OFDM symbol level spread spectrum, so we mainly will illustrate by taking OFDM symbol level spread spectrum as an example below.

For example, needing to take M OFDM symbol in a data modulation symbol time domain, then the data modulation symbol can be multiplied by the time domain spreading code of a M length；Pilot modulation symbol needs to take m OFDM symbol in time domain（Alternatively, m≤M), then the pilot modulation symbol can be multiplied by the time domain spreading code of a m length.Sent it is then possible to which the pilot data modulation symbol of the data modulation symbol of the spread spectrum and spread spectrum is mapped on corresponding time-frequency transmission unit in corresponding OFDM symbol.Here, a time-frequency transmission unit can take in time domain（M+m) individual OFDM symbol.Wherein, different user equipmenies of the code division multiplexing on same time-frequency transmission unit can then be only needed to carry out each data modulation symbol time domain to spread using isometric M and in embodiments of the present invention, when N is equal to 1（That is, a time domain spreading code is only multiplied）, and a time domain spread spectrum is carried out to pilot modulation symbol（That is, a time domain spreading code is only multiplied）, the pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped to i-th of time-frequency transmission unit collection in above-mentioned S120 and closes and sends to base station, can be included：The symbol that the symbol and the pilot modulation symbol of spread spectrum that i-th of data modulation symbol of spread spectrum is included include is mapped in the OFDM symbol that the time-frequency transmission unit of time-frequency transmission unit set includes in staggered mode.

Specifically, in time domain, the data modulation symbol that have mapped spread spectrum of a time-frequency transmission unit M data symbol and have mapped the m frequency pilot sign of pilot modulation symbol of spread spectrum can be with the bad ij of staggered row, such as before this^/?^ data symbol, latter frequency pilot sign；Or one frequency pilot sign of a data symbol（For example, as shown in Fig. 2 now M=m, wherein, what white blank parts were shown can be data symbol, and what diagonal line hatches part was shown can be frequency pilot sign）；「^{M /2/}Individual data symbol, "^m/2, individual frequency pilot sign is followed by L^{M / 2/ 2}" individual data symbol, then "^{Μ /2/ 2}Individual data symbol,

「m / ²Individual frequency pilot sign followed by/² / ²" individual data symbol.

Certainly, the M data symbol and m data symbol that said one time-frequency transmission unit includes can also be arranged in the way of noninterlace, for example, can be with M data symbol formerly, m frequency pilot sign is rear etc..

In embodiments of the present invention, each data modulation symbol in S110 in the above-mentioned n data modulation symbol by packet to be launched carries out time domain spread spectrum, and carries out time domain spread spectrum to pilot modulation symbol, can include：By the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and by the long time domain spreading codes of m, n times time domain spread spectrum is carried out to pilot modulation symbol, N is more than or equal to 2.It should be understood that the long spreading codes of M, which represent the spreading code, M element, the long spreading codes of m, which represent the spreading code, m element.

And the pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum can be mapped into i-th of time-frequency transmission unit collection in the following manner to close and send to base station：Base station is sent on h-th of time-frequency transmission unit being mapped to by i-th of data modulation symbol of the h times time domain spread spectrum and by the pilot modulation symbol of the h time time domain spread spectrum in i-th of time-frequency transmission unit set, the h is integer and value from 1 to N.

Specifically, user equipment can carry out some data modulation symbol n times time domain spread spectrum and and pilot modulation symbol carries out n times time domain spread spectrum.That is, a data modulation symbol can be mapped in Ν χ Μ OFDM symbols by user equipment, and the pilot modulation symbol of spread spectrum may map in N x m OFDM symbols, wherein N >=l.At this moment N x M, N x m can be resolved into N number of M and N number of m respectively, and M ..., M } m ... and m }, i.e., n times spread spectrum and mapping are carried out to data modulation symbol and pilot modulation symbol using the spreading code of M length and m length respectively.

For example, need the OFDM symbol taken to be 2M and 2m respectively after data modulation symbol and the pilot modulation symbol spread spectrum of user equipment 1, need the OFDM symbol taken to be M and m respectively after data modulation symbol and the pilot modulation symbol spread spectrum of user equipment 2.For data modulation symbol, due to needing to account for 2M OFDM symbol in the data modulation symbol time domain of user equipment 1, two groups of each M OFDM symbols are segmented into, need that the spread spectrum of M length twice is respectively adopted when carrying out time domain spread spectrum Code；Similarly, for pilot modulation symbol, it is necessary to take two groups of each m OFDM symbols respectively, when user equipment 1 carries out time domain spread spectrum to pilot modulation symbol, the spreading code of m length twice can be respectively adopted.Wherein, the spread code length used when user equipment 1 is spread to data modulation symbol and pilot modulation symbol, and the mode spread every time are similar with user equipment 2.

In embodiments of the present invention, the length for the time domain spreading code that different user devices are used can also be multiple proportion.Then above-mentioned M and m can be minimum spread code length, correspond to a time-frequency transmission unit.The size of minimum time-frequency transmission unit shared by different user equipmenies can be with equal.In this case, the length of the corresponding spreading code of a data modulation symbol of user equipment can be Ν χ Μ, and the length of the corresponding spreading code of pilot modulation symbol can be^{N x m}, i.e. once spread data modulation symbol and the pilot modulation symbol once spread can be mapped to N time-frequency transmission unit, wherein N >=l by user equipment.

Certainly, in embodiments of the present invention, when the set of time-frequency transmission unit includes multiple time-frequency transmission units, the M data symbol and m data symbol that any one time-frequency transmission unit includes can be arranged in a staggered fashion, such as before this^{/ ?}^ data symbol, latter frequency pilot sign；Or one frequency pilot sign of a data symbol（For example, as shown in Fig. 2 now M=m, wherein, what white blank parts were shown can be data symbol, and what diagonal line hatches part was shown can be frequency pilot sign）；Γ Μ/2/2] individual data symbol, "^{m/ 2}, individual frequency pilot sign is followed by L^M/2/2" individual data symbol, then "^Μ/2/2Individual data symbol, "^{m/ 2}, individual frequency pilot sign is followed by L^M/2/2" individual data symbol.Certainly, the M data symbol and m data symbol that any one time-frequency transmission unit includes can also be arranged in the way of noninterlace, for example, can be with M data symbol formerly, m frequency pilot sign is rear etc..

In embodiments of the present invention, user equipment can only carry out time domain spread spectrum to data modulation symbol and pilot modulation symbol, now, and a time-frequency transmission unit can only take up a subcarrier in frequency domain.Then user equipment can be with the multiple data modulation symbols of frequency division multiplexing on frequency domain.For example, a data modulation symbol takes a subcarrier, due to a resource block（Resource Block, RB) there are 12 subcarriers, can be with 12 data modulation symbols of frequency division multiplexing.Certainly, in embodiments of the present invention, a user equipment can also only take up portion subcarriers on frequency domain.For example, 12 data modulation symbols being multiplexed on a RB can come from 1 to 12 user equipmenies, i.e., each user equipment takes one data modulation symbol of a sub-carrier transmissions respectively；Again for example, 1 data modulation symbol of first user equipment is multiplexed with one RB, 3 data modulation symbols of second user equipment, 5 data modulation symbols of third party equipment, 3 data modulation symbols of the 4th user equipment etc..It is specific how to realize that frequency division multiplexing be according to the requirement of Demodulation Systems performance, the channel fading profiles and system of user equipment The factor such as delay requirement determine.

In embodiments of the present invention, each data modulation symbol and the pilot modulation symbol of spread spectrum spread in the n data modulation symbol by spread spectrum is carried out before mapping transmission in such a way, and this method 100 can also include：Frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to pilot modulation symbol.

In embodiments of the present invention, user equipment can be to carry out time domain spread spectrum also to carry out frequency domain spread spectrum to data modulation symbol and pilot modulation symbol, and now, a time-frequency transmission unit can take multiple subcarriers in frequency domain.That is, can be with the data modulation symbol of the multiple user equipment of code division multiplexing on multiple subcarriers.For example, the displacement that a data modulation symbol can be multiplied by zad off chu sequences by a user equipment takes a RB, wherein, different user equipmenies takes a RB using different sequential shifts.Now, for pilot modulation symbol, user equipment can also be launched by a displacement of zad off chu sequences, wherein, different user equipmenies use different sequential shifts.

In embodiments of the present invention, can be according to the requirement of Demodulation Systems performance, the channel fading profiles of user, the factor such as the delay requirement of system freely combines the data modulation symbol quantity of frequency domain transmission, and the included OFDM symbol of time-domain transmission unit quantity.Now, the pilot modulation symbol of the data modulation symbol of spread spectrum and spread spectrum takes identical bandwidth, that is, takes identical subcarrier.

In embodiments of the present invention, each modulated data symbol in n data modulation symbols of the S110 by packet to be launched carries out time domain spread spectrum respectively, and before carrying out time domain spread spectrum to pilot modulation symbol, this method 100 can also include：

The configured information of base station transmission is received, the configured information is used for the information for the time-frequency transmission unit for indicating the information of the spreading code and data modulation symbol of mapping spread spectrum and the pilot modulation symbol used when information and the pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol.Wherein, the information of above-mentioned spreading code can include spread code length and sequence number etc..

That is, user equipment send data modulation symbol and pilot modulation symbol are carried out the time-frequency transmission unit that spreads the spreading code of use and mapped can by base station advance notice, wherein, base station can send code channel information to user equipment（It can specifically be represented by spreading code sequence number）.According to the code channel information, user equipment can obtain time domain spreading code and frequency domain spread spectrum code.Certainly, in embodiments of the present invention, the information of spreading code and the information of time-frequency transmission unit can also be predefined.

Therefore, the embodiment of the present invention passes through with modulation symbol（Data modulation symbol or pilot modulation symbol）Spread for base unit, because the basic granularity of spread spectrum diminishes, the multiplicating of block spread spectrum data bag can be avoided to exceed that the receiving side user-user signal that causes after the correlated time of channel is non-orthogonal thus despreading property It can decline.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

Above to describe information transferring method according to embodiments of the present invention from user equipment side, information transferring method according to embodiments of the present invention will be described from base station side below.

Fig. 3 is the schematic figure of information transferring method 200 according to embodiments of the present invention.Alternatively, this method 200 can be performed by base station.As shown in figure 3, this method 200 includes：

S210, reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

S220, the time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum；

The n soft demodulation symbols are decoded and verified by S230.

Specifically, base station can close reception signal from a time-frequency transmission unit collection, wherein, a time-frequency transmission unit collection close can have with code division multiplexing the respective data modulation symbol of multiple user equipmenies and and spread spectrum pilot modulation symbol；Then, the time domain spreading code that base station can be used according to each user equipment, from the signal of reception, despreading detects a soft demodulation symbol of each user equipment.Repeat above-mentioned reception and de-spreading operation, and is collecting after whole n of a packet of one user equipment soft demodulation symbols collect and finish, the individual soft demodulation symbols of whole n of a packet of a user equipment are decoded and verified.

Therefore, in embodiments of the present invention, for a time-frequency transmission unit set, there can be the signal spread in units of modulation symbol of multiple user equipmenies by code division multiplexing, base station is kept pouring on defeated unit set and de-spread respectively according to the spreading code that each user equipment is used at this for the moment, for example, combine data symbol and frequency pilot sign maximum-likelihood detec-tion goes out the soft demodulation symbol of each user equipment in the plurality of two user equipmenies.Because the basic granularity of spread spectrum diminishes, a modulation symbol is reduced into from a packet, can avoid block spread spectrum data bag the multiplicating time it is longer exceed the correlated time of channel, the receiving side user-user signal caused it is non-orthogonal thus despreading hydraulic performance decline the problem of.Also, because the granularity of spread spectrum is smaller, Can be with the signal transmission time of more flexible coordinates user equipment, and arrange the multiplexing and signal transmission between user equipment.

In embodiments of the present invention, described in S220 from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, including：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n;

Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set, de-spread each soft demodulation symbol in the corresponding n soft demodulation symbol of n data modulation symbol for detecting spread spectrum.

That is, in embodiments of the present invention, despreading detects that soft demodulation symbol can be that joint data symbol and frequency pilot sign detect soft demodulation symbol by the way of maximum likelihood from the signal of reception.

Specifically, obtain the corresponding soft demodulation symbol of a certain data modulation symbol of some user equipment if desired, then receiving side will can be locally stored to should the spreading code of data modulation symbol of user equipment (data symbol of each time-frequency transmission unit is mapped with a data modulation symbol of the spread spectrum of each user equipment at least one user equipment with the sequence of the data symbol carrying of each time-frequency transmission unit in the time-frequency transmission unit set respectively）Dot product obtains one or more value（The quantity of the value is the quantity of time-frequency transmission unit in time-frequency transmission unit set）；And by be locally stored to should user equipment pilot modulation symbol the sequence that is carried respectively with the data symbol of each time-frequency transmission unit in the time-frequency transmission unit set of spreading code（The data symbol of each time-frequency transmission unit is mapped with a data modulation symbol of the spread spectrum of each user equipment at least one user equipment）Dot product obtains one or more value（The quantity of the value is the quantity of time-frequency transmission unit in time-frequency transmission unit set）；Value obtained above is added, then pair plus and after end value processing is soft demodulated to obtain the time-frequency list Metaset closes the soft modulation symbol of the user equipment of carrying.

In embodiments of the present invention, the data package size of up multiple user equipmenies can be different, can also be identical.Because spread spectrum is modulation symbol level, and minimum code division multiplexing unit is a time-frequency transmission unit, as long as so ensureing that the spreading code code division that multiple user equipmenies of code division multiplexing on a time-frequency transmission unit are each used is orthogonal.Specifically, for a time-frequency transmission unit, the corresponding spreading code of each data modulation symbol in n data modulation symbol of the packet of one user equipment can spreading code code division corresponding with the data modulation symbol of other users equipment it is orthogonal, and the spreading code code division that the spreading code that uses when being spread to pilot modulation symbol of a user equipment is used when being spread with other users equipment to pilot modulation symbol is orthogonal.

In embodiments of the present invention, each spread spectrum code channel of each time-frequency transmission unit can at most transmit a data modulation symbol.That is, a data modulation symbol of user equipment can be transmitted by one or more time-frequency transmission units.Wherein, a time-frequency transmission unit can include M+m OFDM symbol in time domain；M OFDM symbol is data symbol, and the corresponding spreading code of data modulation symbol of the different user devices mapped thereon is orthogonal；M OFDM symbol is frequency pilot sign, and the corresponding spreading code of pilot modulation symbol of the different user equipmenies mapped thereon is orthogonal.

For example, as shown in figure 4, co-existing in 6 time-frequency transmission units.Wherein, code division multiplexing has the data modulation symbol B1 and UE3 of UE1 data modulation symbol Al, UE2 data modulation symbol C1 on first time-frequency transmission unit, wherein, the corresponding spreading code code divisions of data modulation symbol Al, B1 and C1 are orthogonal.Code division multiplexing has the data modulation symbol B2 and UE3 of UE1 data modulation symbol A2, UE2 data modulation symbol C1 on second time-frequency transmission unit, wherein, the corresponding spreading code code division of data modulation symbol A2, B2 and C1 is orthogonal.Code division multiplexing has the data modulation symbol B3 and UE4 of UE1 data modulation symbol A3, UE2 data modulation symbol D1 on the 3rd time-frequency transmission unit, wherein, the corresponding spreading code code division of data modulation symbol A3, B3 and D1 is orthogonal.Code division multiplexing has the data modulation symbol B4 and 1^4 of UE1 data modulation symbol A4, UE2 data modulation symbol D2 on the 4th time-frequency transmission unit, wherein, the corresponding spreading code code division of data modulation symbol A4, B4 and D2 is orthogonal.Code division multiplexing has the data modulation symbol B5 and UE4 of UE1 data modulation symbol A5, UE2 data modulation symbol D3 on the 5th time-frequency transmission unit, wherein, the corresponding spreading code code division of data modulation symbol A5, B5 and D3 is orthogonal.Code division multiplexing has the data modulation symbol B56 and UE4 of UE1 data modulation symbol A6, UE2 data modulation symbol D4 on the 6th time-frequency transmission unit, wherein, the corresponding spreading code code division of data modulation symbol A6, B6 and D4 is orthogonal.It should be noted that first time-frequency transmission unit and second time-frequency transmission unit are mapped with UE3 same number According to modulation symbol CI, mean, data modulation symbol C1 is spread at least through time domain twice and the data modulation symbol of a time domain spread spectrum is mapped on a time-frequency transmission unit, wherein, each time domain spreads used spreading code and can be the same or different.

It should be understood that, although how the data modulation symbol that above-mentioned combination Fig. 4 only describes multiple user equipmenies maps in time-frequency transmission unit, but each time-frequency transmission unit can be mapped with the pilot modulation symbol of the user equipment of identical quantity simultaneously, the quadrature condition of specific mapping mode and spreading code is similar, in order to which cylinder is clean, it will not be repeated here.

It should be understood that, in embodiments of the present invention, when user equipment has carried out frequency domain spread spectrum to data modulation symbol and pilot modulation symbol, then described in S220 from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, can include：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol of the spread spectrum time domain spreading code used and the frequency domain spread spectrum code used, from the signal of reception, despreading detects the n soft demodulation symbols.

In embodiments of the present invention, time-frequency transmission unit can with the quantity of the user equipment of code division multiplexing can be according to included by the time-frequency transmission unit the quantity M of OFDM symbol and the quantity m of OFDM symbol of pilot modulation symbol of transmission spread spectrum of data modulation symbol of transmission spread spectrum determine.Specifically, can using the quantity of the user equipment of code division multiplexing as min { M, m }, or, can with the quantity of the user equipment of code division multiplexing be less than min { M, m }.

For example, including 1 subcarrier and 14 OFDM symbols for one（Wherein, 7 OFDM symbols, which are used for the data modulation symbol for transmitting spread spectrum and 7 OFDM symbols, is used for the pilot modulation symbol of transmission spread spectrum）Time-frequency transmission unit for, can be with the modulation symbol of 7 user equipmenies of code division multiplexing, wherein it is possible to distinguish each user equipment by the code channel of time domain.Wherein, it can be that time domain is spread using the spreading code of 7 length that the code channel of the embodiment of the present invention, which is constituted, so 14 OFDM symbols 7 make data symbol, 7 are done frequency pilot sign, and 7 user equipmenies can be multiplexed altogether；A RB has 12 subcarriers, including 12 such time-frequency transmission units on frequency domain.So 1 RB, 14 OFDM symbols can be multiplexed 84 user equipmenies (7 x 12).

In embodiments of the present invention, before i-th of time-frequency transmission unit collection of S210 user equipmenies closes reception signal, this method 200 can also include：

Time-frequency transmission unit is distributed for user equipment, and determines the information for the spreading code that the user equipment is used in spread spectrum data modulation symbol and pilot modulation symbol；The information of the spreading code can include spread code length and sequence number etc.. Configured information is sent to user equipment, the configured information is used to indicate to use spreading codes information when information and the pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and maps the time-frequency transmission unit of the data modulation symbol of spread spectrum and the pilot modulation symbol of spread spectrum.

Specifically, base station can the channel fading profiles based on each user equipment, transmission power or other disturbing factors etc., be each user equipment distribution time-frequency transmission unit that should be taken and the spreading code used.

Therefore, in embodiments of the present invention, for a time-frequency transmission unit set, there can be the signal spread in units of modulation symbol of multiple user equipmenies by code division multiplexing, base station is kept pouring on defeated unit set and de-spread respectively according to the spreading code that each user equipment is used at this for the moment, for example, combine data symbol and frequency pilot sign maximum-likelihood detec-tion goes out the soft demodulation symbol of each user equipment in the plurality of two user equipmenies.Because the basic granularity of spread spectrum diminishes, a modulation symbol is reduced into from a packet, can avoid block spread spectrum data bag the multiplicating time it is longer exceed the correlated time of channel, the receiving side user-user signal caused it is non-orthogonal thus despreading hydraulic performance decline the problem of.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

It should be understood that, in various embodiments of the present invention, the size of the sequence number of above-mentioned each process is not meant to the priority of execution sequence, and the execution sequence of each process should be determined with its function and internal logic, and any limit is constituted without tackling the implementation process of the embodiment of the present invention.

Fig. 5 is the schematic block diagram of user equipment 300 according to embodiments of the present invention.As shown in figure 5, the user equipment 300 includes：Spectrum-spreading unit 310, map unit 320 and transmitting element 330;Wherein, the spectrum-spreading unit 310 is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The map unit 320 and the transmitting element 330 are respectively used to：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is mapped and sent in such a way：

The map unit 320 is closed for the pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum to be mapped into i-th of time-frequency transmission unit collection, and the transmitting element 330 is used to the map unit 320 being mapped in i-th of data modulation symbol of the spread spectrum that i-th of time-frequency transmission unit collection close and the pilot modulation symbol of spread spectrum is sent to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit. Alternatively, as shown in fig. 6, the user equipment 300 also includes receiving unit 340;Wherein, the receiving unit 340 is used for：Each data modulation symbol in the n data modulation symbol is subjected to time domain spread spectrum in the spectrum-spreading unit 310, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information of base station transmission, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

Alternatively, the N is equal to 1;

The map unit 320 specifically for：Symbol included by symbol and the pilot modulation symbol of the spread spectrum included by i-th of data modulation symbol of the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th time-frequency transmission unit set includes in staggered mode.

Alternatively, the spectrum-spreading unit 310 specifically for：Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of the M include M element, and the long time domain spreading codes of the m include m element；

The map unit 320 specifically for：The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped into i-th of time-frequency transmission unit collection in the following manner to close：The pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set, the h is integer and value from 1 to N.

Alternatively, the map unit 320 specifically for：

Alternatively, the spectrum-spreading unit 310 is additionally operable to：

Before each data modulation symbol spread and the pilot modulation symbol spread are mapped and sent in the map unit 320 and the transmitting element 330 respectively the n data modulation symbol by spread spectrum, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

User equipment 300 according to embodiments of the present invention can correspond to according to embodiments of the present invention in information transferring method in user equipment, the corresponding flow of information transferring method 100 in can correspond to according to embodiments of the present invention, in order to which cylinder is clean, it will not be repeated here.

Therefore, the embodiment of the present invention passes through with modulation symbol（Data modulation symbol or pilot modulation symbol） Spread for base unit, because the basic granularity of spread spectrum diminishes, the multiplicating of block spread spectrum data bag can be avoided to exceed that the receiving side user-user signal that causes after the correlated time of channel is non-orthogonal thus despreading hydraulic performance decline.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

Fig. 7 is the schematic block diagram of base station 400 according to embodiments of the present invention.As shown in fig. 7, the base station 400, which includes receiving unit 410, despread unit 420, conciliates code check unit 430;Wherein,

The receiving unit 410 is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The despread unit 420 is used for：The time domain that the n data modulation symbol based on spread spectrum is used is spread in the signal, and despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum；The decoding verification unit 430 is used for：The n soft demodulation symbols are decoded and verified.Alternatively, as shown in figure 8, the base station 400 also includes the unit of transmitting element 440；Wherein, the unit of transmitting element 440 is used for：In the receiving unit 410 before the n time-frequency transmission unit collection closes and receive the signal, to the configured information of user equipment transmitting element 440, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and mapping spread spectrum data modulation symbol and spread spectrum pilot modulation symbol time-frequency transmission unit information.

Alternatively, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiving unit 410 is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Alternatively, the despread unit 420 specifically for： Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of the M include M element, the long time domain spreading codes of the m include m element；Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols.

Alternatively, the despread unit 420 specifically for：

Base station 400 according to embodiments of the present invention can correspond to according to embodiments of the present invention in information transferring method in base station, the corresponding flow of information transferring method 200 in can correspond to according to embodiments of the present invention, in order to which cylinder is clean, it will not be repeated here.

Therefore, in embodiments of the present invention, for a time-frequency transmission unit set, there can be the signal after being spread in units of modulation symbol of multiple user equipmenies by code division multiplexing, base station is kept pouring on defeated unit set and de-spread respectively according to the spreading code that each user equipment is used at this for the moment, for example, combine data symbol and frequency pilot sign maximum-likelihood detec-tion goes out the soft demodulation symbol of each user equipment in the plurality of two user equipmenies.Because the basic granularity of spread spectrum diminishes, a modulation symbol is reduced into from a packet, can avoid block spread spectrum data bag the multiplicating time it is longer exceed the correlated time of channel, the receiving side user-user signal caused it is non-orthogonal thus despreading hydraulic performance decline the problem of.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing between user equipment and signal transmitting unit.

Fig. 9 is the schematic block diagram of user equipment 500 according to embodiments of the present invention.As shown in figure 9, the user equipment 500 includes：Processor 510 and transmitter 520;Wherein, The processor 510 is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The transmitter 520 is used for：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is subjected to mapping transmission in such a way：The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

Alternatively, as shown in Figure 10, the user equipment also includes receiver 530;Wherein, the receiver 530 is used for：Each data modulation symbol in the n data modulation symbol is carried out time domain spread spectrum by reason device 510 in this place, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information of base station transmission, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

Alternatively, the N is equal to 1;

The transmitter 520 specifically for：Symbol included by symbol and the pilot modulation symbol of the spread spectrum included by i-th of data modulation symbol of the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

Alternatively, the processor 510 specifically for：Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of the M include M element, and the long time domain spreading codes of the m include m element；

The transmitter 520 specifically for：The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped to i-th of time-frequency transmission unit collection in the following manner closes and send and give the base station：On h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and it is sent to the base station, the h is integer and value from 1 to N.

Alternatively, the transmitter 520 specifically for：

When the symbol included by the pilot modulation symbol of the symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped into this i-th in staggered mode Keep pouring in the OFDM symbol that h-th of time-frequency transmission unit of defeated unit set includes and be sent to the base station.

Alternatively, the processor 510 is additionally operable to：The each data modulation symbol and the pilot modulation symbol of spread spectrum spread in n data modulation symbol of the transmitter 520 by spread spectrum is carried out before mapping transmission, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

User equipment 500 according to embodiments of the present invention can correspond to according to embodiments of the present invention in information transferring method in user equipment, the corresponding flow of information transferring method 100 in can correspond to according to embodiments of the present invention, in order to which cylinder is clean, it will not be repeated here.

Therefore, the embodiment of the present invention passes through with modulation symbol（Data modulation symbol or pilot modulation symbol）Spread for base unit, because the basic granularity of spread spectrum diminishes, the multiplicating of block spread spectrum data bag can be avoided to exceed that the receiving side user-user signal that causes after the correlated time of channel is non-orthogonal thus despreading hydraulic performance decline.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

Figure 11 is the schematic block diagram of base station 600 according to embodiments of the present invention.As shown in figure 11, the base station 600 includes processor 620 and receiver 610;Wherein,

The receiver 610 is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The processor 620 is used for：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, and the n soft demodulation symbols are decoded and verified.

Alternatively, as shown in figure 12, the base station also includes transmitter 630;Wherein, the transmitter 630 is used for：In the receiver 610 before the corresponding n time-frequency transmission unit collection of the user equipment closes reception signal, configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol And the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum of mapping spread spectrum.

Alternatively, i-th data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiver 610 is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Alternatively, the processor 620 specifically for：

Base station 600 according to embodiments of the present invention can correspond to according to embodiments of the present invention in information transferring method in base station, the corresponding flow of information transferring method 200 in can correspond to according to embodiments of the present invention, in order to which cylinder is clean, it will not be repeated here.

Therefore, in embodiments of the present invention, can be with code division multiplexing for a time-frequency transmission unit set There is the signal after being spread in units of modulation symbol of multiple user equipmenies, base station is kept pouring on defeated unit set and de-spread respectively according to the spreading code that each user equipment is used at this for the moment, for example, combine data symbol and frequency pilot sign maximum-likelihood detec-tion goes out the soft demodulation symbol of each user equipment in the plurality of two user equipmenies.Because the basic granularity of spread spectrum diminishes, a modulation symbol is reduced into from a packet, can avoid block spread spectrum data bag the multiplicating time it is longer exceed the correlated time of channel, the receiving side user-user signal caused it is non-orthogonal thus despreading hydraulic performance decline the problem of.Also, can be with the signal transmission time of more flexible coordinates user equipment because the granularity of spread spectrum is smaller, and arrange the multiplexing and signal transmission between user equipment.

Those of ordinary skill in the art are it is to be appreciated that the unit and algorithm steps of each example described with reference to the embodiments described herein, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel can realize described function to each specific application using distinct methods, but this realization is it is not considered that beyond the scope of this invention.

It is apparent to those skilled in the art that, the specific work process of the system of foregoing description, device and unit clean for the convenience and cylinder of description may be referred to the corresponding process in preceding method embodiment, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, it can realize by another way.For example, device embodiment described above is only schematical, for example, the division of the unit, it is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can combine or be desirably integrated into another system, or some features can be ignored, or do not perform.Another, it, by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be electrical, machinery or other forms that shown or discussed coupling or direct-coupling or communication connection each other, which can be,.

The unit illustrated as separating component can be or may not be physically separate, and the part shown as unit can be or may not be physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.

In addition, each functional unit in each of the invention embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units it is integrated in a unit.

If the function is realized using in the form of SFU software functional unit and as independent production marketing or made Used time, it can be stored in a computer read/write memory medium.Understood based on such, the part or the part of the technical scheme that technical scheme substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform all or part of step of each embodiment methods described of the invention.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only Memory), random access memory（RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.

It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, any one skilled in the art the invention discloses technical scope in; change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.

Claims

Claim

1. a kind of information transferring method, it is characterised in that including：

Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is subjected to mapping transmission in such a way：

The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

2. according to the method described in claim 1, it is characterized in that, each data modulation symbol in the n data modulation symbol by packet to be launched carries out time domain spread spectrum, and before carrying out time domain spread spectrum to pilot modulation symbol, methods described also includes：

Receive the configured information that the base station is sent, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

3. method according to claim 1 or 2, it is characterised in that the N is equal to 1;The pilot modulation symbol by i-th of data modulation symbol of spread spectrum and spread spectrum is mapped to i-th time-frequency transmission unit collection and closes and send to base station, including：

Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

4. method according to claim 1 or 2, it is characterised in that each data modulation symbol in the n data modulation symbol by packet to be launched carries out time domain spread spectrum, and carries out time domain spread spectrum to pilot modulation symbol, including：

Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of M include M element, and the long time domain spreading codes of m include m element；

The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped into i-th of time-frequency transmission unit collection in the following manner to close and send to the base station： On h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and it is sent to the base station, the h is integer and value from 1 to N.

5. method according to claim 4, it is characterized in that, on h-th of time-frequency transmission unit that the pilot modulation symbol that i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain are spread is mapped in i-th time-frequency transmission unit set and the base station is sent to, including：Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped in the OFDM symbol that h-th of time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

6. method according to any one of claim 1 to 5, it is characterised in that each data modulation symbol and the pilot modulation symbol of spread spectrum spread in the n data modulation symbol by spread spectrum is carried out before mapping transmission, and methods described also includes：

Frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

7. a kind of information transferring method, it is characterised in that including：

Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum；

The n soft demodulation symbols are decoded and verified.

8. method according to claim 7, it is characterised in that described before the corresponding n time-frequency transmission unit collection of user equipment closes reception signal, methods described also includes：

Configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, And the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum of mapping spread spectrum.

9. the method according to claim 7 or 8, it is characterized in that, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Symbol included by i-th of data modulation symbol of kth time time domain spread spectrum and the symbol included by the pilot modulation symbol of kth time time domain spread spectrum are mapped on k-th of time-frequency transmission unit in i-th of time-frequency transmission unit set in staggered mode, and the k is the positive integer less than or equal to N.

10. the method according to any one of claim 7 to 9, it is characterised in that in the signal from reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, including：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of M include M element, the long time domain spreading codes of m include m element；

Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols.

11. the method according to any one of claim 7 to 9, it is characterised in that in the signal from reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, including：

The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol spread the time domain spreading code used and the frequency domain spread spectrum code used, From the signal of reception, despreading detects the n soft demodulation symbols.

12. a kind of user equipment, it is characterised in that including spectrum-spreading unit, map unit and transmitting element；Wherein,

The spectrum-spreading unit is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The map unit and the transmitting element are respectively used to：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is mapped and sent in such a way：

The map unit is closed for the pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum to be mapped into i-th of time-frequency transmission unit collection, and the transmitting element is used to the map unit being mapped in i-th of data modulation symbol of the spread spectrum that i-th of time-frequency transmission unit collection closes and the pilot modulation symbol of spread spectrum is sent to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

13. user equipment according to claim 12, it is characterised in that the user equipment also includes receiving unit；Wherein,

The receiving unit is used for：Each data modulation symbol in the n data modulation symbol is subjected to time domain spread spectrum in the spectrum-spreading unit, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information that the base station is sent, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

14. the user equipment according to claim 12 or 13, it is characterised in that the N is equal to

1;

The map unit specifically for：Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode.

15. the user equipment according to claim 12 or 13, it is characterised in that

The spectrum-spreading unit specifically for：By the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, and the long time domain spreading codes of M include M element The long time domain spreading codes of m include m element；

The map unit specifically for：The pilot modulation symbol of i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped into i-th of time-frequency transmission unit collection in the following manner to close：The pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set, the h is integer and value from 1 to N.

16. user equipment according to claim 15, it is characterised in that the map unit specifically for：

Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped in the OFDM symbol that h-th of time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode.

17. the user equipment according to any one of claim 12 to 16, it is characterised in that the spectrum-spreading unit is additionally operable to：

Before each data modulation symbol and the pilot modulation symbol of spread spectrum spread in the map unit and the transmitting element respectively the n data modulation symbol by spread spectrum is mapped and sent, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

18. a kind of base station, it is characterised in that conciliate code check unit including receiving unit, despread unit；Wherein,

The receiving unit is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The despread unit is used for：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, in the signal received from the receiving unit, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum；

The decoding verification unit is used for：The n soft demodulation symbols are decoded and verified.

19. base station according to claim 18, it is characterised in that the base station also includes sending Unit；Wherein,

The transmitting element is used for：In the receiving unit before the n time-frequency transmission unit collection closes the reception signal, configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and mapping spread spectrum data modulation symbol and spread spectrum pilot modulation symbol time-frequency transmission unit information.

20. the base station according to claim 18 or 19, it is characterized in that, i-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiving unit is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Symbol included by i-th of data modulation symbol of kth time time domain spread spectrum and the symbol included by the pilot modulation symbol of kth time time domain spread spectrum are mapped on k-th of time-frequency transmission unit in i-th of time-frequency transmission unit set in staggered mode, and the k is the positive integer less than or equal to N.

21. the base station according to any one of claim 18 to 20, it is characterised in that the despread unit specifically for：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of M include M element, the long time domain spreading codes of m include m element；

Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols.

22. the base station according to any one of claim 18 to 20, it is characterised in that the despread unit specifically for： The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol of the spread spectrum time domain spreading code used and the frequency domain spread spectrum code used, from the signal of reception, despreading detects the n soft demodulation symbols.

23. a kind of user equipment, it is characterised in that including processor and transmitter；Wherein, the processor is used for：Each data modulation symbol in n data modulation symbol of packet to be launched is subjected to time domain spread spectrum respectively, and time domain spread spectrum is carried out to pilot modulation symbol, the n is the positive integer more than 1；

The transmitter is used for：The pilot modulation symbol of each data modulation symbol spread in n data modulation symbol of spread spectrum and spread spectrum is subjected to mapping transmission in such a way：The pilot modulation symbol of i-th of data modulation symbol of spread spectrum and spread spectrum is mapped into i-th of time-frequency transmission unit collection to close and send to base station, wherein, the i be positive integer and value from 1 to n, i-th of time-frequency transmission unit set includes N number of time-frequency transmission unit.

24. user equipment according to claim 23, it is characterised in that the user equipment also includes receiver；Wherein,

The receiver is used for：Each data modulation symbol in the n data modulation symbol is subjected to time domain spread spectrum in the processor, and to pilot modulation symbol carry out time domain spread spectrum before, receive the configured information that the base station is sent, the configured information is used to indicate to use the information of spreading code when spread spectrum data modulation symbol uses information and the spread pilot modulation symbol of spreading code, and the data modulation symbol and the information of the time-frequency transmission unit of the pilot modulation symbol of spread spectrum that mapping is spread.

25. the user equipment according to claim 23 or 24, it is characterised in that the N is equal to

1;

The transmitter specifically for：Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the spread spectrum and the spread spectrum is mapped on the orthogonal frequency division multiplex OFDM symbol that the time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

26. the user equipment according to claim 23 or 24, it is characterised in that

The processor specifically for：Pass through the long time domain spreading codes of M, n times time domain spread spectrum is carried out to each data modulation symbol, and pass through the long time domain spreading codes of m, n times time domain spread spectrum is carried out to the pilot modulation symbol, N is more than or equal to 2, the long time domain spreading codes of M include M element, and the long time domain spreading codes of m include m element；

The transmitter specifically for：In the following manner by i-th of data modulation symbol of the spread spectrum And the pilot modulation symbol of the spread spectrum is mapped to i-th of time-frequency transmission unit collection and closes and send to the base station：On h-th of time-frequency transmission unit that the pilot modulation symbol of i-th of data modulation symbol of the h times time domain spread spectrum and the h time time domain spread spectrum is mapped in i-th of time-frequency transmission unit set and be sent to the base station, the h for integer and value from 1 to

27. user equipment according to claim 26, it is characterised in that the transmitter specifically for：

Symbol included by the pilot modulation symbol of symbol included by i-th of data modulation symbol of the h times time domain spread spectrum and the h times time domain spread spectrum is mapped in the OFDM symbol that h-th of time-frequency transmission unit of i-th of time-frequency transmission unit set includes in staggered mode and the base station is sent to.

28. the user equipment according to any one of claim 23 to 27, it is characterised in that the processor is additionally operable to：The each data modulation symbol and the pilot modulation symbol of spread spectrum spread in n data modulation symbol of the transmitter by spread spectrum is carried out before mapping transmission, frequency domain spread spectrum is carried out to each data modulation symbol, and frequency domain spread spectrum is carried out to the pilot modulation symbol.

29. a kind of base station, it is characterised in that including processor and receiver；Wherein,

The receiver is used for：Reception signal is closed in the corresponding n time-frequency transmission unit collection of user equipment, wherein, each time-frequency transmission unit set in the n time-frequency transmission unit set is mapped with the data modulation symbol of spread spectrum and the pilot tone adjustment symbol of spread spectrum in such a way：I-th of data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, the n is the integer more than 1, the i be integer and value from 1 to n, the N is the integer more than or equal to 1；

The processor is used for：The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the time domain spreading code that the pilot modulation symbol of spread spectrum is used, from the signal of reception, despreading detects the corresponding n soft demodulation symbol of n data modulation symbol of spread spectrum, and the n soft demodulation symbols are decoded and verified.

30. base station according to claim 29, it is characterised in that the base station also includes transmitter；Wherein, the transmitter is used for：In the receiver before the corresponding n time-frequency transmission unit collection of the user equipment closes reception signal, configured information is sent to the user equipment, the configured information is used for the information of spreading code for indicating to be used when information and the spread pilot modulation symbol of the spreading code used during spread spectrum data modulation symbol, and the data modulation symbol of mapping spread spectrum and the pilot tone of spread spectrum are adjusted The information of the time-frequency transmission unit of symbol processed.

31. the base station according to claim 29 or 30, it is characterized in that, i-th data modulation symbol of the spread spectrum being mapped with N number of time-frequency transmission unit that i-th of time-frequency transmission unit set in the n time-frequency transmission unit set where the signal that the receiver is received includes in n data modulation symbol of spread spectrum and the pilot modulation symbol for being mapped with spread spectrum, including：

Symbol included by i-th of data modulation symbol of kth time time domain spread spectrum and the symbol included by the pilot modulation symbol of kth time time domain spread spectrum are mapped on k-th of time-frequency transmission unit in i-th of time-frequency transmission unit set in staggered mode, and the k is the positive integer less than or equal to N.

32. the base station according to any one of claim 29 to 31, it is characterised in that the processor specifically for：

Each first value in corresponding N number of first value of each data modulation symbol spread in n data modulation symbol for obtaining the spread spectrum in the following manner, and obtain each second value in the corresponding N number of second value of pilot modulation symbol of the spread spectrum mapped in each time-frequency transmission unit set：The long time domain spreading codes of M that i-th of data modulation symbol of spread spectrum is used, sequence of points corresponding with i-th of data modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit in i-th of time-frequency transmission unit set is spread is multiplied by the first value of acquisition, and the long time domain spreading codes of m for being used the pilot modulation symbol of the spread spectrum mapped in i-th of time-frequency transmission unit set, sequence of points corresponding with the pilot modulation symbol that the h times time domain mapped on h-th of time-frequency transmission unit is spread is multiplied by acquisition second value, wherein, the N is the integer more than or equal to 2, h is integer and value from 1 to N, i is integer and value from 1 to n, the long time domain spreading codes of M include M element, the long time domain spreading codes of m include m element；

Corresponding N number of first value of each data modulation symbol spread in the n data modulation symbol based on spread spectrum, and the corresponding N number of second value of pilot modulation symbol that each time-frequency transmission unit collection closes the spread spectrum that should be mapped, de-spread each soft demodulation symbol detected in the n soft demodulation symbols.

33. the base station according to any one of claim 29 to 31, it is characterised in that the processor specifically for：

The time domain spreading code that the n data modulation symbol based on spread spectrum is used and the frequency domain spread spectrum code used, and the pilot modulation symbol of the spread spectrum time domain spreading code used and the frequency domain spread spectrum code used, from the signal of reception, despreading detects the n soft demodulation symbols.