CN107888351A

CN107888351A - Reference signal sending method, reference signal processing method and equipment

Info

Publication number: CN107888351A
Application number: CN201610871841.9A
Authority: CN
Inventors: 张旭; 曲秉玉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2018-04-06
Anticipated expiration: 2036-09-29
Also published as: CN107888351B; WO2018059253A1

Abstract

Reference signal sending method, reference signal processing method and equipment provided in an embodiment of the present invention, are related to communication technical field, solve the problems, such as that different service cells have interference when sending reference signal on identical running time-frequency resource in the prior art.This method includes：Emitter is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first reference signal sequence；Wherein, the first subcarrier spacing f₁Refer to the frequency interval of two neighboring subcarrier peak value；The emitter uses the first subcarrier spacing f in its serving cell₁First reference signal sequence is sent at least one OFDM symbol, so as to which receiver receiver/transmitter at least one OFDM symbol uses the first subcarrier spacing f in its serving cell₁The first reference signal sequence sent.

Description

Reference signal sending method, reference signal processing method and equipment

Technical field

The present invention relates to communication technical field, more particularly to reference signal sending method, reference signal processing method and set It is standby.

Background technology

Reference signal is used for the demodulation channel detection of data, and the design of reference signal sequence need to reduce different districts as far as possible User equipment (English：User equipment, referred to as：UE the interference of reference signal) is sent on identical running time-frequency resource.Mesh Before, in Long Term Evolution (English：Long term evolution, referred to as：LTE) in system, uplink reference signals use Zadoff-Chu (ZC) sequence, according to the cross correlation between sequence, multiple ZC sequences are grouped, the ZC sequences in guarantee group Between there is higher cross correlation, and there is relatively low cross correlation between the ZC sequences in other groups.The UE of same cell is used Sequence in same ZC sequences group, the UE of different districts are used in the sequence in different ZC sequences groups, different small so as to ensure that The UE in area sends the interference very little of reference signal on identical running time-frequency resource.

Wherein, during the packet carried out in LTE system to ZC sequences, assume that different districts use identical subcarrier spacing Reference signal transmission is carried out, and the UE of different districts, when sending reference signal sequence, shared running time-frequency resource can wrap Multiple resource units are included, as shown in figure 1, each resource unit takes an OFDM symbol in time domain, one is taken on frequency domain Individual subcarrier, wherein subcarrier spacing are 15kHz.But with the fast development of the communication technology, 3GPP has been proposed supporting The access network of different sub-carrier width, and cell can change the subcarrier width that it is used, so as to cause different districts to make No longer set up with the hypothesis of same sub-carrier width, cause the cross correlation between reference signal sequence to be destroyed, and then cause not Interference be present with the reference signal that the UE of cell is sent on identical running time-frequency resource, under the access and data transmission performance of cell Drop.

The content of the invention

Embodiments of the invention provide reference signal sending method, reference signal processing method and equipment, solve existing Interference problem of the different service cells when sending reference signal on identical running time-frequency resource in technology.

To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：

First aspect, there is provided a kind of reference signal sending method, this method include：Emitter is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first reference signal sequence；Wherein, the first subcarrier spacing f₁Refer to adjacent two The frequency interval of individual sub- carrier peak value；Emitter uses the first subcarrier spacing f in its serving cell₁Accorded with least one OFDM The first reference signal sequence is sent on number.In above-mentioned technical proposal, emitter can be made according to the first subcarrier spacing used Determine the first reference signal sequence, and the correlation of the first reference signal sequence and its reference signal sequence in its serving cell It is higher, it is relatively low with the correlation of other serving cell internal reference signals sequences, use phase so as to avoid different server cell With the interference on running time-frequency resource during transmission reference signal.

In a kind of possible implementation, the first reference signal sequence is according to the first subcarrier spacing f₁, to default Formation sequence extract and obtain, default formation sequence includes Gold sequence or ZC sequences；Or first reference signal sequence by The root index Q that first reference signal sequence corresponds to basic sequence determines that root indexes Q by the first subcarrier spacing f₁It is determined that.It is above-mentioned can In the technical scheme of choosing, there is provided the reference signal sequence of determination first method, it is ensured that emitter is according to the first subcarrier The first reference signal sequence that interval determines has higher correlation with its reference signal sequence in its serving cell.

In a kind of possible implementation, if the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁ =f₀*2ⁿ, n is the integer more than or equal to 0, then the first reference signal sequence corresponds to the root index Q of basic sequence with indexing q with reference to root In the presence of following relation：Q=q (2ⁿ)²；Wherein, it is the root index with reference to basic sequence with reference to root index q, refers to refer to reference to basic sequence Subcarrier spacing f₀Basic sequence corresponding to corresponding reference signal sequence；First subcarrier spacing f₁Corresponding first reference signal Sequence is according to the first subcarrier spacing f₁, default formation sequence is extracted and obtained, is specially：According to the first subcarrier spacing f₁With reference subcarrier interval f₀Relation, to default formation sequence every 2ⁿIt is individual to extract an extraction acquisition；Wherein, preset Formation sequence be reference subcarrier interval f₀The formation sequence of corresponding reference signal sequence.Above-mentioned optional technical scheme In, emitter can be made according to the first subcarrier spacing f₁With reference subcarrier interval f₀Relation, determine the first reference signal sequence The root index Q of the corresponding basic sequence of row and the relation with reference to root index q, so as to according to the relation of the two, from default generation Extracted in sequence and obtain the first reference signal sequence.

In a kind of possible implementation, emitter determines the sequence of reference signal sequence group used in serving cell Group mark；Emitter identifies according to sequence group, it is determined that indexing q with reference to root.In above-mentioned optional technical scheme, there is provided a kind of true Surely with reference to root index q method.

In a kind of possible implementation, this method also includes：Emitter receives the configured information that receiver is sent, and According to configured information, it is determined that indexing q with reference to root.In above-mentioned optional technical scheme, there is provided another kind is determined with reference to root index q Method.

In a kind of possible implementation, emitter is according to the first subcarrier spacing f₁With the first reference signal sequence Length M, from the first corresponding relation corresponding to sequence group mark, obtain the root index that the first reference signal sequence corresponds to basic sequence Q；Wherein, the first corresponding relation comprises at least the first subcarrier spacing f₁, the first reference signal sequence length M and and f₁With Sequence root corresponding to M indexes, and sequence root index corresponds to the root index of basic sequence for the first reference signal sequence.Above-mentioned optional skill In art scheme, emitter can be from the first corresponding relation according to f₁And M, obtain the first reference signal sequence and correspond to basic sequence Root indexes Q, and the first reference signal sequence is generated so as to index Q according to the root of acquisition.

In a kind of possible implementation, if receiver is base station, emitter is according to the first subcarrier spacing f₁, it is determined that First subcarrier spacing f₁Before corresponding first reference signal sequence, this method also includes：Emitter receives what base station was sent Control signaling or high-level signaling, control signaling or high-level signaling include the frequency domain resource letter that emitter sends reference signal Breath；Emitter determines the first subcarrier spacing f according to frequency domain resource information₁.In above-mentioned optional technical scheme, emitter can First subcarrier spacing f is determined with the control signaling or high-level signaling that are sent according to base station₁。

Second aspect, there is provided a kind of reference signal processing method, this method include：Receiver is at least one OFDM symbol Upper receiver/transmitter uses the first subcarrier spacing f in its serving cell₁The the first subcarrier spacing f sent₁Corresponding first ginseng Examine signal sequence；Wherein, the first subcarrier spacing f₁Corresponding first reference signal sequence is by emitter according to the first subcarrier It is spaced f₁It is determined.In above-mentioned technical proposal, its in the serving cell of the first reference signal sequence and emitter is with reference to letter The correlation of number sequence is higher, relatively low with the correlation of other serving cell internal reference signals sequences, so as to avoid difference Server cell uses the interference on identical running time-frequency resource during transmission reference signal.

In a kind of possible implementation, this method also includes：Receiver determines the second reference signal sequence, and according to The second reference signal sequence determined, is handled the first reference signal sequence received；Wherein, the second reference signal sequence Row are according to the first subcarrier spacing f₁Determine.In above-mentioned optional technical scheme, receiver is according to the first subcarrier spacing f₁ The second reference signal sequence is determined, and the first reference signal sequence is handled according to the second reference signal sequence, so as to To ensure the correctness of the first reference signal sequence received.

In a kind of possible implementation, the first reference signal sequence is according to the first subcarrier spacing f₁, to default Formation sequence, which extracts, to be obtained, and default formation sequence includes Gold sequence or ZC sequences；Or first reference signal sequence by The root index Q that one reference signal sequence corresponds to basic sequence determines that root indexes Q by the first subcarrier spacing f₁It is determined that.It is above-mentioned optional Technical scheme in, there is provided the reference signal sequence of determination first method, it is ensured that according to the first subcarrier spacing determine The first reference signal sequence there is higher correlation with its reference signal sequence in the serving cell of emitter.

In a kind of possible implementation, if the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁ =f₀*2ⁿ, n is the integer more than or equal to 0, then the first reference signal sequence corresponds to the root index Q of basic sequence with indexing q with reference to root In the presence of following relation：Q=q (2ⁿ)²；Wherein, it is the root index with reference to basic sequence with reference to root index q, refers to refer to reference to basic sequence Subcarrier spacing f₀Basic sequence corresponding to corresponding reference signal sequence；First reference signal sequence is according between the first subcarrier Every f₁, default formation sequence is extracted and obtained, is specially：According to the first subcarrier spacing f₁With reference subcarrier interval f₀'s Relation, to default formation sequence every 2ⁿIt is individual to extract an extraction acquisition；Wherein, default formation sequence is reference subcarrier It is spaced f₀The formation sequence of corresponding reference signal sequence.In above-mentioned optional technical scheme, according to the first subcarrier spacing f₁With Reference subcarrier interval f₀Relation, determine first reference signal sequence correspond to the root index Q of basic sequence with reference to root index q Relation, so as to according to the relation of the two, be extracted from default formation sequence and obtain the first reference signal sequence.

In a kind of possible implementation, this method also includes：Receiver sends configured information to emitter, so that hair Machine is penetrated according to configured information, it is determined that indexing q with reference to root.In above-mentioned optional technical scheme, there is provided one kind determines to refer to root rope Draw q method.

In a kind of possible implementation, this method also includes：If receiver is base station, this method also includes：Base station Sent control signaling to emitter or high-level signaling, control signaling or high-level signaling include emitter and send reference signal Frequency domain resource information, so that emitter determines the first subcarrier spacing f according to frequency domain resource information₁.Above-mentioned optional technical side In case, there is provided another kind determines the method with reference to root index q.

The third aspect, there is provided a kind of emitter, emitter include：Determining unit, for according to the first subcarrier spacing f₁, Determine the first subcarrier spacing f₁Corresponding first reference signal sequence；Wherein, the first subcarrier spacing f₁Refer to two neighboring son The frequency interval of carrier peak value；Transmitting element, for using the first subcarrier spacing f in its serving cell₁At least one The first reference signal sequence is sent in OFDM symbol.

In a kind of possible implementation, the first reference signal sequence is according to the first subcarrier spacing f₁, to default Formation sequence extract and obtain, default formation sequence includes Gold sequence or ZC sequences；Or first reference signal sequence by The root index Q that first reference signal sequence corresponds to basic sequence determines that root indexes Q by the first subcarrier spacing f₁It is determined that.

In a kind of possible implementation, if the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁ =f₀*2ⁿ, n is the integer more than or equal to 0, then the first reference signal sequence corresponds to the root index Q of basic sequence with indexing q with reference to root In the presence of following relation：Q=q (2ⁿ)²；Wherein, it is the root index with reference to basic sequence with reference to root index q, refers to refer to reference to basic sequence Subcarrier spacing f₀Basic sequence corresponding to corresponding reference signal sequence；First subcarrier spacing f₁Corresponding first reference signal Sequence is according to the first subcarrier spacing f₁, default formation sequence is extracted and obtained, is specially：According to the first subcarrier spacing f₁With reference subcarrier interval f₀Relation, to default formation sequence every 2ⁿIt is individual to extract an extraction acquisition；Wherein, preset Formation sequence be reference subcarrier interval f₀The formation sequence of corresponding reference signal sequence.

In a kind of possible implementation, determining unit is additionally operable to：Determine reference signal sequence used in serving cell The sequence group mark of row group；Identified according to sequence group, it is determined that indexing q with reference to root.

In a kind of possible implementation, emitter also includes：Receiving unit, for receiving the instruction of receiver transmission Information；Determining unit, it is additionally operable to according to configured information, it is determined that indexing q with reference to root.

In a kind of possible implementation, determining unit, it is additionally operable to according to the first subcarrier spacing f₁With the first reference The length M of signal sequence, from the first corresponding relation corresponding to sequence group mark, obtain the first reference signal sequence and correspond to motif The root index Q of row；Wherein, the first corresponding relation comprises at least the first subcarrier spacing f₁, the first reference signal sequence length M, and and f₁With M corresponding to sequence root index, sequence root index for the first reference signal sequence correspond to basic sequence root index.

In a kind of possible implementation, if receiver is base station, receiving unit, it is additionally operable to receive the control that base station is sent Signaling processed or high-level signaling, control signaling or high-level signaling include the frequency domain resource information that emitter sends reference signal； Determining unit, it is additionally operable to according to frequency domain resource information, determines the first subcarrier spacing f₁。

Fourth aspect, there is provided a kind of receiver, receiver include：Receiving unit, at least one OFDM symbol Receiver/transmitter uses the first subcarrier spacing f in its serving cell₁The the first subcarrier spacing f sent₁Corresponding first reference Signal sequence；Wherein, the first subcarrier spacing f₁Corresponding first reference signal sequence is by emitter according between the first subcarrier Every f₁It is determined.

In a kind of possible implementation, receiver also includes：Determining unit, for determining the second reference signal sequence Row, and according to the second reference signal sequence of determination, the first reference signal sequence received is handled；Wherein, second Reference signal sequence is according to the first subcarrier spacing f₁Determine.

In a kind of possible implementation, the first reference signal sequence is according to the first subcarrier spacing f₁, to default Formation sequence, which extracts, to be obtained, and default formation sequence includes Gold sequence or ZC sequences；Or first reference signal sequence by The root index Q that one reference signal sequence corresponds to basic sequence determines that root indexes Q by the first subcarrier spacing f₁It is determined that.

In a kind of possible implementation, if the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁ =f₀*2ⁿ, n is the integer more than or equal to 0, then the first reference signal sequence corresponds to the root index Q of basic sequence with indexing q with reference to root In the presence of following relation：Q=q (2ⁿ)²；Wherein, it is the root index with reference to basic sequence with reference to root index q, refers to refer to reference to basic sequence Subcarrier spacing f₀Basic sequence corresponding to corresponding reference signal sequence；First reference signal sequence is according between the first subcarrier Every f₁, default formation sequence is extracted and obtained, is specially：According to the first subcarrier spacing f₁With reference subcarrier interval f₀'s Relation, to default formation sequence every 2ⁿIt is individual to extract an extraction acquisition；Wherein, default formation sequence is reference subcarrier It is spaced f₀The formation sequence of corresponding reference signal sequence.

In a kind of possible implementation, receiver also includes：Transmitting element, for sending instruction letter to emitter Breath, so that emitter is according to configured information, it is determined that indexing q with reference to root.

In a kind of possible implementation, if receiver is base station, transmitting element, it is additionally operable to send control to emitter Signaling or high-level signaling, control signaling or high-level signaling include the frequency domain resource information that emitter sends reference signal, with Emitter is set to determine the first subcarrier spacing f according to frequency domain resource information₁。

5th aspect, there is provided a kind of emitter, emitter include memory, processor, system bus and communication interface, deposited Store code and data in reservoir, processor are connected with memory by system bus, the code in processor run memory So that emitter performs the reference signal sending method that first aspect or any possible implementation of first aspect are provided.

6th aspect, there is provided a kind of receiver, receiver include memory, processor, system bus and communication interface, deposited Store code and data in reservoir, processor are connected with memory by system bus, the code in processor run memory So that receiver performs above-mentioned second aspect or any possible implementation of second aspect and provides reference signal processing side Method.

7th aspect, there is provided a kind of computer-readable recording medium, be stored with computer in computer-readable recording medium Execute instruction, when at least one computing device of equipment computer executed instructions, the equipment performs above-mentioned first aspect Or the reference signal sending method that any possible implementation of first aspect is provided, or perform above-mentioned second aspect or The reference signal processing method that any possible implementation of second aspect is provided.

Eighth aspect, there is provided a kind of computer program product, the computer program product include computer executed instructions, should Computer executed instructions store in a computer-readable storage medium；At least one processor of equipment can be from computer-readable Storage medium reads the computer executed instructions, and at least one computing device computer executed instructions cause in equipment implementation The reference signal sending method that first aspect or any possible implementation of first aspect are provided is stated, or is performed above-mentioned The reference signal processing method that second aspect or any possible implementation of second aspect are provided.

9th aspect, there is provided a kind of communication system, communication system include the emitter that the above-mentioned 5th aspect is provided, and The receiver that above-mentioned 6th aspect is provided.

In reference signal sending method, reference signal processing method and equipment that embodiments of the invention provide, emitter By according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first reference signal sequence, and in its clothes Business cell uses the first subcarrier spacing f₁The first reference signal sequence is sent at least one OFDM symbol, receiver is existed First reference signal sequence is received at least one OFDM symbol, so that the reference signal sequence in same serving cell Row have higher correlation, and the reference signal sequence of different service cells has relatively low correlation, and then avoids difference The interference of reference signal is sent on the identical running time-frequency resource of serving cell.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is a kind of schematic diagram for the running time-frequency resource for sending reference signal；

Fig. 2 is a kind of structural representation of communication system provided in an embodiment of the present invention；

Fig. 3 is a kind of structural representation of base station provided in an embodiment of the present invention；

Fig. 4 is a kind of structural representation of baseband subsystems provided in an embodiment of the present invention；

Fig. 5 is a kind of structural representation of user equipment provided in an embodiment of the present invention；

Fig. 6 is a kind of flow chart of reference signal sending method provided in an embodiment of the present invention；

Fig. 7 is a kind of schematic diagram of reference signal sequence provided in an embodiment of the present invention；

Fig. 8 is a kind of schematic diagram of running time-frequency resource provided in an embodiment of the present invention；

Fig. 9 is the flow chart of another reference signal sending method provided in an embodiment of the present invention；

Figure 10 is a kind of structural representation of emitter provided in an embodiment of the present invention；

Figure 11 is the structural representation of another emitter provided in an embodiment of the present invention；

Figure 12 is the structural representation of another emitter provided in an embodiment of the present invention；

Figure 13 is a kind of structural representation of receiver provided in an embodiment of the present invention；

Figure 14 is the structural representation of another receiver provided in an embodiment of the present invention；

Figure 15 is the structural representation of another receiver provided in an 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 carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

Introduce the present invention before, first to the present embodiments relate to technical term simply introduced.

Reference signal, refer to be used to measure channel quality, or for carrying out relevant detection and data solution to UE The signal of tune.Wherein, reference signal can mainly include：Demodulated reference signal (English：demodulation reference Signal, referred to as：DMRS), Sounding Reference Signal (English：Sounding reference signal, referred to as：SRS) and RACH (English：Random access channel, referred to as：RACH) targeting signal.

Reference signal sequence, refer to that reference signal is mapped in the sequence code used when on resource unit, above-mentioned three kinds of references Signal DMRS, SRS and RACH targeting signal is typically based on Zadoff-Chu (ZC) sequence, and is all direct after producing It is mapped on resource unit, does not make the processing of any coding.

Basic sequence, refer to the sequence for generating reference signal sequence, and reference signal sequence is to carry out frequency domain by basic sequence On phase place caused by sequence.For example a certain ZC sequences after cyclic extension are subjected to phase place on frequency domain, A reference signal sequence can be produced, at this point it is possible to which the ZC sequences after cyclic extension are referred to as into the reference signal sequence Corresponding basic sequence.

The root index of basic sequence, refer to that the root for generating basic sequence indexes, so that ZC sequences are basic sequence as an example, Ruo Gensuo Q1 is cited as, then the formula (1) of q1 and ZC sequences is indexed according to root, the sequence of generation is referred to as ZC sequences, and root index is to generate ZC sequences root index.In formula, N_ZCFor the length of ZC sequences, m values are from 0 to N_ZC-1；

Formation sequence, refer to the sequence for generating basic sequence, and basic sequence is to be carried out cyclic extensions by formation sequence or blocked Caused sequence, such as, formation sequence can include Gold sequence and ZC sequences.If formation sequence is Gold sequence, with reference to letter Number sequence can block sequence generation by Gold sequence；Or formation sequence is ZC sequences, reference signal sequence is passed through by ZC sequences After crossing cyclic extension, then phase place is increased to the sequence after expansion to produce, the q 1 is the index of ZC sequences.

The structural representation for the communication system that Fig. 2 is applied by embodiments of the invention, referring to Fig. 2, the communication system bag Include base station 101 and user equipment 102.In embodiments of the present invention, emitter is user equipment 102, then receiver is base station 101；If emitter is base station 101, receiver is user equipment 102.

Wherein, base station 101 has the scheduling feature of shared channel, has based on the packet count for being sent to user equipment 102 According to history establish the function of scheduling, scheduling is exactly, it is necessary to there is a kind of machine in multiple 102 common transmitted resources of user equipment Make effectively to distribute physical layer resources, to obtain statistical multiplexing gain.In addition, multiple user equipmenies 102 can be located at the base Stand in 101 serving cell, wherein, the serving cell of base station 101 can include one or more, such as, as shown in Fig. 2 The serving cell of base station 101 can be two, i.e. cell 1 and cell 2.

User equipment 102 has the work(that data are sent and received by the communication channel 103 established between base station 101 Energy.User equipment 102 carries out the transmission or reception processing of shared channel according to the information sent by schedules control channels.Separately Outside, user equipment 102 can be mobile station, mobile phone, computer and portable terminal device etc., and the type of the user equipment 102 Can be with identical, can also be different.

The reception and transmission of data are carried out between base station 101 and user equipment 102 by communication channel, the communication channel can To be radio communication channel, and in radio communication channel, shared channel and schedules control channels at least be present, shared channel is In order to send and receive packet and between multiple user equipmenies 102 it is public, schedules control channels be used for send shared channel Distribution and corresponding scheduling result etc..

Fig. 3 is a kind of hardware structure diagram of base station provided in an embodiment of the present invention, as shown in figure 3, the base station includes base band Subsystem, middle Radio Frequency Subsystem, antenna feeder subsystem and some supporting constructions (for example, complete machine subsystem), wherein, baseband subsystems For realizing the Operation and Maintenance of whole base station, signaling processing, Radio Resource principle, the coffret to packet-based core networks are realized, Realize LTE physical layers, media access control layer, L3 signalings, Operation and Maintenance master control function；Middle Radio Frequency Subsystem realizes that base band is believed Number, the conversion between intermediate-freuqncy signal and radiofrequency signal, realize that the demodulation of LTE wireless reception of signals sends modulation and the work(of signal Rate is amplified；Antenna feeder subsystem includes the antenna for being connected to base station radio frequency module and feeder line and GRS receives the antenna and feeder line of card, For realizing the reception and transmission of radio open signal；Complete machine subsystem, it is the supporting part of baseband subsystems and intermediate frequency subsystem Point, there is provided structure, power supply and environment monitoring function.

Wherein, baseband subsystems can be as shown in Figure 4：For example, surfing Internet with cell phone is needed by base station core network access, logical Core net access internet is crossed, the wherein data of internet are delivered to baseband portion by the interface between core net and base station, Baseband portion carries out the processing such as PDCP, RLC, MAC layer, coding, modulation, gives radio frequency part and is transmitted to user equipment.Base band with It can be connected between radio frequency by CPRI interfaces；In addition, radio frequency part at present can be by fiber optic stretch, such as the RRU zoomed out. Each step base band of data transmission method in the embodiment of the present invention is realized by radio frequency, while it is logical to receive forwarding step Antenna (for example, air interface) is crossed come what is realized.

Interface during the present invention is implemented between the user equipment that is related to and base station can be understood as user equipment and base station it Between the air interface that is communicated, or be referred to as Uu interfaces.

The structural representation for the user equipment that Fig. 5 is applied by the embodiment of the present invention, the user equipment can be mobile phone, put down Plate computer, notebook computer, Ultra-Mobile PC, net book, personal digital assistant etc., the embodiment of the present invention using UT as Illustrated exemplified by mobile phone, Fig. 4 is illustrated that the block diagram of the part-structure of the mobile phone related to various embodiments of the present invention.

As shown in figure 5, mobile phone includes：Memory, processor, radio frequency (English：Radio frequency, referred to as：RF it is) electric The part such as road and power supply.It will be understood by those skilled in the art that the handset structure shown in Fig. 5 is not formed to mobile phone Limit, can include than illustrating more or less parts, either combine some parts or different parts arrangement.

Each component parts of mobile phone is specifically introduced with reference to Fig. 5：

Memory can be used for storage software program and module, and processor is stored in the software program of memory by operation And module, so as to perform the various function application of mobile phone and data processing.Memory can mainly include storing program area and Storage data field, wherein, storing program area can storage program area, application program needed at least one function etc.；Store number It can be stored according to area and created data etc. are used according to mobile phone.In addition, memory can include high-speed random access memory, Can also be including nonvolatile memory etc..

Processor is the control centre of mobile phone, using various interfaces and the various pieces of connection whole mobile phone, is passed through Operation performs the software program and/or module being stored in memory, and calls the data being stored in memory, performs The various functions and processing data of mobile phone, so as to carry out integral monitoring to mobile phone.Optionally, processor may include one or more Processing unit；Preferably, processor can integrate application processor and modem processor, wherein, application processor is mainly located Operating system, user interface and application program etc. are managed, modem processor mainly handles radio communication.

RF circuits can be used for receive and send messages or communication process in, the reception and transmission of signal.Generally, RF circuits are included but not It is limited to antenna, at least one amplifier, transceiver, coupler, low-noise amplifier, duplexer etc..In addition, RF circuits may be used also To be communicated by radio communication with network and other equipment.The radio communication can use any communication standard or agreement, bag Include but be not limited to global system for mobile communications, general packet radio service, CDMA, WCDMA, Long Term Evolution, electricity Sub- mail, Short Message Service etc..

Mobile phone also includes the power supply to all parts power supply, it is preferred that power supply can pass through power-supply management system and processing Device is logically contiguous, so as to realize the functions such as management charging, electric discharge and power managed by power-supply management system.

Although being not shown, mobile phone can also include input block, display unit, sensor assembly, audio-frequency module, WiFi moulds Block, bluetooth module etc., will not be repeated here.

Fig. 6 is a kind of schematic flow sheet of reference signal sending method provided in an embodiment of the present invention, referring to Fig. 6, the party Method includes following steps.

Step 201：Emitter is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first reference Signal sequence；Wherein, the first subcarrier spacing f₁Refer to the frequency interval of two neighboring subcarrier peak value.

Wherein, the first reference signal sequence be can be according to the first subcarrier spacing f₁, default formation sequence is extracted Obtain, default formation sequence includes Gold sequence or ZC sequences；Or first reference signal sequence by the first reference signal sequence The root index Q of the corresponding basic sequence of row determines that root indexes Q by the first subcarrier spacing f₁It is determined that wherein, the Q is ZC sequences One index.

The method of both reference signal sequences of determination first is illustrated separately below, it is described in detail below.

The first, the first reference signal sequence be according to the first subcarrier spacing f₁, default formation sequence is extracted and obtained , default formation sequence includes Gold sequence or ZC sequences.

Wherein, when emitter is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first with reference to letter During number sequence, emitter can be first according to the first subcarrier spacing f₁, it is determined that extracting the first reference from default formation sequence The extraction interval of signal sequence, default formation sequence is extracted according still further to the extraction interval of determination, so as to obtain first Reference signal sequence.

Optionally, when emitter is according to the first subcarrier spacing f₁, it is determined that extracting the first ginseng from default formation sequence When examining the extraction interval of signal sequence, emitter can from default subcarrier spacing and extract interval between corresponding relation In, obtain the first subcarrier spacing f₁It is corresponding to extract interval, and the extraction interval of acquisition is defined as from default generation sequence The extraction interval of the first reference signal sequence is extracted in row.

Or if reference subcarrier interval be present, the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be： f₁=f₀*2ⁿ, n is the integer more than or equal to 0, when emitter is according to the first subcarrier spacing f₁, it is determined that from default formation sequence During the extraction interval of the first reference signal sequence of middle extraction, emitter can be according to the first subcarrier spacing f₁With reference subcarrier It is spaced f₀Relation, by 2ⁿIt is defined as extracting the extraction interval of the first reference signal sequence from default formation sequence, so as to right Default formation sequence is every 2ⁿIt is individual to extract one, so as to obtain the basic sequence of the first reference signal sequence, and then can be according to the The reference signal sequence of motif column-generation first of one reference signal sequence；Now, default formation sequence can be to be carried with reference to son Wave spacing f₀The formation sequence of corresponding reference signal sequence.

Such as if the first subcarrier spacing f₁And it is 30kHz, reference subcarrier interval f₀For 15kHz, then f₁=f₀*2¹, hair Machine is penetrated according to f₁And f₀Relation, it is determined that extraction at intervals of f₁/f₀=2, if f₀The formation sequence of corresponding reference signal sequence As shown in (a) in Fig. 7, specially zc (0)~zc (10), when the length of the first reference signal sequence is 12, emitter is pressed Extraction according to determination is spaced from formation sequence zc0~zc10 cyclic extension sequence, is extracted once every 2, so as to obtain The first reference signal sequence basic sequence such as Fig. 7 in (b) shown in, specially zc (0), zc (2), zc (4), zc (6), zc (8)、zc(10)、zc(1)、zc(3)、zc(5)、zc(7)、zc(9)、zc(0).Wherein, in the first reference signal sequence basic sequence Including zc (1), zc (3), zc (5), zc (7), zc (9), zc (0) be that circulation expansion is carried out to formation sequence zc (0)~zc (10) Every the sequence code of 2 extractions after exhibition.

It should be noted that the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁=f₀*2ⁿWhen, the One reference signal sequence corresponds to the root index Q of basic sequence with following relation be present with reference to root index q：Q=q (2ⁿ)²；Wherein, refer to Root index q is the root index with reference to basic sequence, and this refers to reference subcarrier interval f with reference to basic sequence₀Corresponding reference signal sequence Basic sequence corresponding to row.

Secondth, the first reference signal sequence by the first reference signal sequence correspond to basic sequence root index Q determine, root rope Draw Q by the first subcarrier spacing f₁It is determined that.Specifically, emitter determines that the method for the first reference signal sequence can include：Step Rapid a- steps c.

Step a：According to the first subcarrier spacing f₁Determine that the first reference signal sequence corresponds to the root index Q of basic sequence.

Optionally, when emitter is according to the first subcarrier spacing f₁Determine that the first reference signal sequence corresponds to the root of basic sequence When indexing Q, emitter can be according to the first subcarrier spacing f₁With the length M of the first reference signal sequence, identified from sequence group In corresponding first corresponding relation, the root index Q that the first reference signal sequence corresponds to basic sequence is obtained；Wherein, the first corresponding pass System comprises at least the first subcarrier spacing f₁, the first reference signal sequence length M and and f₁With M corresponding to sequence root rope Draw, sequence root index corresponds to the root index of basic sequence for the first reference signal sequence.

Such as if the first subcarrier spacing f₁For 30kHz, the length M of the first reference signal sequence is 36, then emitter root According to the first subcarrier spacing f₁=30kHz and the first reference signal sequence length M=36, from sequence group as shown in table 1 below In first corresponding relation corresponding to mark, the root index Q that the first reference signal sequence of acquisition corresponds to basic sequence is 4.

Table 1

It should be noted that the interval in the first corresponding relation shown in above-mentioned table 1 refers to default subcarrier spacing, it is long Degree refers to the length of default reference signal sequence, and the first corresponding relation shown in above-mentioned table 1 is exemplary only, above-mentioned table 1 does not form restriction to the embodiment of the present invention.

If the first subcarrier spacing f₁With reference subcarrier interval f₀Relation be：f₁=f₀*2ⁿ, n is whole more than or equal to 0 Number, the first reference signal sequence correspond to the root index Q of basic sequence with following relation be present with reference to root index q：Q=q (2ⁿ)²；Its In, it is the root index with reference to basic sequence with reference to root index q, this refers to reference subcarrier interval f with reference to basic sequence₀Corresponding reference Basic sequence corresponding to signal sequence.

Optionally, when emitter is according to the first subcarrier spacing f₁Determine that the first reference signal sequence corresponds to the root of basic sequence When indexing Q, emitter can be determined first with reference to root index q, in conjunction with the first subcarrier spacing f₁With reference subcarrier interval f₀'s Relation, determine that root indexes Q.

Wherein, when emitter is determined with reference to root index q, emitter can be determined used in its serving cell with reference to letter The sequence group mark of number sequence group, and identified according to the sequence group, it is determined that indexing q with reference to root.

Specifically, emitter determines that the process of sequence group mark can be：Emitter receives synchronizing information, and this is synchronously believed Breath includes the cell ID of its serving cell, the reference signal sequence that emitter includes according to the cell ID and communication system Group total quantity, determine that the sequence group identifies.

For example if sequence group is identified as the group number of sequence group, emitter can be by the group number of the sequence group relative to communication The remainder for the reference signal sequence group total quantity that system includes, it is defined as with reference to root index q.

It should be noted that multiple reference signal sequence groups, a reference signal sequence can be included in a communication system Multiple reference signal sequences can be included in row group, and the cross correlation between the reference signal sequence in same group is higher, no It is relatively low with the cross correlation between the reference signal sequence in group.Such as in LTE system, the sum of reference signal sequence group Amount can be 30.

In addition, when emitter is determined with reference to root index q, emitter, which can also receive the instruction sent by receiver, to be believed Breath, and according to the configured information, it is determined that indexing q with reference to root.

Specifically, when emitter receives the configured information, emitter can be according to the configured information of reception, from storage Default configured information and preset reference root index between corresponding relation, obtain corresponding with configured information preset reference root Index, and the preset reference root index of acquisition is defined as with reference to root index q.

Such as if the configured information that emitter receives is information 1, from default configured information as shown in table 2 below with presetting In corresponding relation between being indexed with reference to root, it is index 1 to obtain preset reference root index corresponding with information 1, then it is true will to index 1 It is set to reference to root index q.

Table 2

Default configured information	Preset reference root indexes
		Information 0	Index 0
Information 1	Index 1
		Information 2	Index 2
……	……

It should be noted that the relation between default configured information and the preset reference root shown in above-mentioned table 2 indexes is only Exemplary, above-mentioned table 2 is not formed to the embodiment of the present invention and limited.

It should be noted that the configured information that receiver is sent may be embodied in system information, the system information can Emitter is sent in a manner of by broadcast.

Step b：The basic sequence according to corresponding to the root of determination indexes Q the first reference signal sequences of generation.

Optionally, when emitter corresponds to the root index Q generations first of basic sequence with reference to letter according to the first reference signal sequence Number corresponding to sequence during basic sequence, if the first reference signal sequence corresponds to motif and is classified as ZC sequences, emitter can be based on root Q is indexed, the basic sequence according to corresponding to equation below (2) generates the first reference signal sequence；In formula (2), N_ZCFor the length of ZC sequences Degree, M be the first reference signal sequence length, x_q[] is the ZC sequences with reference to corresponding to root indexes q, and mod is the symbol of remainder.Or Person,

If the first reference signal sequence corresponds to motif and is classified as Gold sequence, emitter corresponds to base with the first reference signal sequence The root index Q of sequence and the relation with reference to root index q, the base according to corresponding to equation below (3) generates the first reference signal sequence Sequence；In formula (3), L is the length of Gold sequence, and M is the length of the first reference signal sequence, and y [] is initial Gold sequence.

R (i)=x_q[((2ⁿ)²*i+k)modN_ZC], 0≤i ＜ M, k=0,1 ..., 2ⁿ-1 (2)

R (i)=y ([(2ⁿ)²* i+k] modL), 0≤i ＜ M, k=0,1 ..., 2ⁿ-1 (3)

It should be noted that as the first subcarrier spacing f₁With reference subcarrier interval f₀When equal, then n is equal to 0, first The root index Q that reference signal sequence corresponds to basic sequence is also equal with reference to root index q, so as to generated according to above-mentioned steps b the Basic sequence corresponding to one reference signal sequence, the basic sequence corresponding to reference signal sequence as with reference to corresponding to root index q.

Step c：Emitter reference signal sequence of motif column-generation first according to corresponding to first reference signal sequence.

After emitter basic sequence according to corresponding to above-mentioned steps b generates the first reference signal sequence, emitter can be with Cyclic shift is carried out to the basic sequence of generation, so as to obtain corresponding first reference signal sequence.

Step 202：Emitter uses the first subcarrier spacing f in its serving cell₁In at least one OFDM symbol to Receiver sends the first reference signal sequence.

Step 203：Receiver receiver/transmitter at least one OFDM symbol is carried in its serving cell using the first son Wave spacing f₁The first reference signal sequence sent.

Specifically, when emitter determines the first subcarrier spacing f₁After corresponding first reference signal sequence, emitter The first subcarrier spacing f can be used in its serving cell₁The first reference signal sequence is sent at least one OFDM symbol, So as to which receiver can use the first subcarrier spacing f by receiver/transmitter at least one OFDM symbol₁The first ginseng sent Examine signal sequence.

Optionally, if the serving cell is configured with least two subcarrier spacings, such as, at least two subcarrier spacing Number be 2, and respectively the first subcarrier spacing f₁With the second subcarrier spacing f₂, emitter uses the first subcarrier spacing f₁, and/or the second subcarrier spacing f₂Reference signal sequence is sent, and uses the first subcarrier spacing f₁, and/or second son carry Wave spacing f₂Data are sent, if it is different with the subcarrier spacing used when sending data to send reference signal sequence, emitter Subcarrier spacing corresponding to being used by time-multiplexed mode sends reference signal sequence and data, in particular to transmission The time-domain resource of reference signal sequence is different from the time-domain resource for sending data.

For example as shown in figure 8, emitter uses the first subcarrier spacing f₁Reference signal sequence is sent, uses the second son Carrier wave interval f₂Send data, and f₂=2f₁, then emitter can be such as Fig. 8 institutes for sending the running time-frequency resource of reference signal sequence Show.

If in addition, the serving cell sends reference signal sequence using at least two subcarrier spacings, for a ginseng Signal sequence length is examined, basic sequence group includes at least motif corresponding to reference signal sequence group used in the serving cell Row.

Step 204：Receiver determines the second reference signal sequence, and according to the second reference signal sequence of determination, docking The first reference signal sequence received is handled；Wherein, the second reference signal sequence is according to the first subcarrier spacing f₁Really Fixed.

Wherein, receiver is according to the first subcarrier spacing f₁Determine the method and above-mentioned steps of the second reference signal sequence According to the first subcarrier spacing f in 201₁The method for determining the first reference signal sequence is consistent, referring specifically in above-mentioned steps 201 Description, the embodiment of the present invention will not be repeated here.

After receiver determines the second reference signal sequence, can according to the second reference signal sequence, to receive One reference signal sequence is handled, and specific processing procedure is：The first reference signal received and receiver are determined Second reference signal sequence carries out relevant treatment, and processing method is each corresponding element multiplication in two sequences, and is summed.

It should be noted that when reference signal sending method provided in an embodiment of the present invention is applied to base station and user equipment Between when, then in above-mentioned steps 201-204, when user equipment is as emitter, base station can be used as receiver；Or When user equipment is as receiver, base station can be used as emitter.Certainly, in actual applications, emitter or receiver May be other equipment, the embodiment of the present invention is not specifically limited to this.

Further, when base station is as receiver, referring to Fig. 9, before step 201, this method also includes：Step 205- steps 206.

Step 205：Base station is sent control signaling to emitter or high-level signaling, the control signaling or high-level signaling bag The frequency domain resource information of reference signal is sent containing emitter.

Step 206：When emitter receives the control signaling or high-level signaling, emitter can be believed according to the control Order or high-level signaling, it is determined that sending the frequency domain resource information of reference signal.

Wherein, frequency domain resource information includes time-domain resource information and frequency domain resource information, and time-domain resource can be OFDM symbols Number, frequency domain resource can be subcarrier spacing, be spaced sub-carrier number etc., wherein, interval sub-carrier number refers to reference signal sequence Row are when being mapped on frequency domain, the subcarrier number being spaced between adjacent element.

Specifically, when base station sends control signaling to emitter or after high-level signaling, emitter can be according to receiving Control signaling or high-level signaling, it is determined that send reference signal frequency domain resource information.

For example when emitter receives the control signaling or high-level signaling, emitter can be according to the control signaling Or high-level signaling determines the first subcarrier spacing f for sending reference signal₁With at least one OFDM symbol.

In reference signal sending method provided in an embodiment of the present invention, emitter passes through according to the first subcarrier spacing f₁, Determine the first subcarrier spacing f₁Corresponding first reference signal sequence, and use the first subcarrier spacing in its serving cell f₁The first reference signal sequence is sent at least one OFDM symbol, receiver is received at least one OFDM symbol First reference signal sequence, so that the reference signal sequence in same serving cell has higher correlation, it is different The reference signal sequence of serving cell has relatively low correlation, and then avoids and sent out on the identical running time-frequency resource in different service cells Send the interference of reference signal.

It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of interaction between each network element.Can With understanding, each network element, such as emitter, receiver etc., in order to realize above-mentioned function, it comprises perform each function Corresponding hardware configuration and/or software module.Those skilled in the art should be readily appreciated that, with reference to disclosed herein The network element and algorithm steps of each example of embodiment description, the present invention can be with the combination shape of hardware or hardware and computer software Formula is realized.Some functions is performed in a manner of hardware or computer software driving hardware actually, depending on technical scheme Application-specific and design constraint.Professional and technical personnel can be realized to each specific application using distinct methods Described function, but this realization is it is not considered that beyond the scope of this invention.

The embodiment of the present invention can carry out the division of functional module according to above method example to emitter, receiver etc., For example, can correspond to each function divides each functional module, two or more functions can also be integrated in one In processing module.Above-mentioned integrated module can both be realized in the form of hardware, can also use the shape of software function module Formula is realized.It should be noted that the division in the embodiment of the present invention to module is schematical, only a kind of logic function is drawn Point, there can be other dividing mode when actually realizing.

In the case where dividing each functional module using corresponding each function, Figure 10 shows involved in above-described embodiment And emitter a kind of possible structural representation, emitter 300 includes：Determining unit 301, transmitting element 302.Wherein, Determining unit 301 is used to perform the process 201 in Fig. 6, the process 201 and 206 in Fig. 9；Transmitting element 302 is used to perform Fig. 6 With the process 202 in Fig. 9.Further, the emitter can also include receiving unit 303, wherein, receiving unit 303 is used for Receive the control signaling sent by receiver or high-level signaling.All phases for each step that above method embodiment is related to are inside the Pass The function description of corresponding function module can be quoted by holding, and will not be repeated here.

In the case of using integrated unit, Figure 11 shows the one of emitter 310 involved in above-described embodiment The possible logical construction schematic diagram of kind.Emitter 310 includes：Processing module 312 and communication module 313.Processing module 312 is used for Action to emitter is controlled management, for example, processing module 312 is used to perform in process 201 and Fig. 9 in Fig. 6 Process 201 and 206, and/or other processes for techniques described herein.Communication module 313 is used between receiver Communication.Emitter 310 can also include memory module 311, for storing the program code and data of emitter.

Wherein, processing module 312 can be processor or controller, such as can be central processor unit, general place Manage device, digital signal processor, application specific integrated circuit, field programmable gate array or other PLDs, crystal Pipe logical device, hardware component or its any combination.It can realize or perform with reference to described by the disclosure of invention Various exemplary logic blocks, module and circuit.The processor can also be the combination for realizing computing function, such as comprising One or more microprocessors combine, combination of digital signal processor and microprocessor etc..Communication module 313 can be received Send out device, transmission circuit or communication interface etc..Memory module 311 can be memory.

When processing module 312 is processor, communication module 313 is communication interface, when memory module 311 is memory, this Emitter involved by inventive embodiments can be the equipment shown in Figure 12.

Refering to a kind of hardware configuration citing for shown in Figure 12, being emitter, the emitter 320 includes：Processor 322, lead to Believe interface 323, memory 321 and bus 324.Wherein, communication interface 323, processor 322 and memory 321 are by total Line 324 is connected with each other；Bus 324 can be Peripheral Component Interconnect standard (English：peripheral component Interconnect, referred to as：PCI) bus or EISA (English：extended industry standard Architecture, referred to as：EISA) bus etc..The bus can be divided into address bus, data/address bus, controlling bus etc..For It is easy to represent, is only represented in Figure 12 with a thick line, it is not intended that an only bus or a type of bus.

In the case where dividing each functional module using corresponding each function, Figure 13 shows involved in above-described embodiment And receiver a kind of possible structural representation, receiver 400 includes：Receiving unit 401, determining unit 402.Wherein, Receiving unit 401 is used to perform the process 203 in Fig. 6 and Fig. 9；Determining unit 402 is used to perform the process in Fig. 6 and Fig. 9 204.Further, the receiver can also include transmitting element 403, wherein, transmitting element 403 is used to perform in Fig. 9 to hair The machine of penetrating sends control signaling or the process of high-level signaling 205.All phases for each step that above method embodiment is related to are inside the Pass The function description of corresponding function module can be quoted by holding, and will not be repeated here.

In the case of using integrated unit, Figure 14 shows the one of receiver 410 involved in above-described embodiment The possible logical construction schematic diagram of kind.Receiver 410 includes：Processing module 412 and communication module 413.Processing module 412 is used for Action to receiver is controlled management, for example, processing module 412 is used to perform the process 204 in Fig. 6 and Fig. 9, and/or Other processes for techniques described herein.The communication that communication module 413 is used between receiver.Emitter 410 is also Memory module 411 can be included, for storing the program code and data of receiver.

Wherein, processing module 412 can be processor or controller, such as can be central processor unit, general place Manage device, digital signal processor, application specific integrated circuit, field programmable gate array or other PLDs, crystal Pipe logical device, hardware component or its any combination.It can realize or perform with reference to described by the disclosure of invention Various exemplary logic blocks, module and circuit.The processor can also be the combination for realizing computing function, such as comprising One or more microprocessors combine, combination of digital signal processor and microprocessor etc..Communication module 413 can be received Send out device, transmission circuit or communication interface etc..Memory module 411 can be memory.

When processing module 412 is processor, communication module 413 is communication interface, when memory module 411 is memory, this Receiver involved by inventive embodiments can be the equipment shown in Figure 15.

Refering to a kind of hardware configuration citing for shown in Figure 15, being receiver, the receiver 420 includes：Processor 422, lead to Believe interface 423, memory 421 and bus 424.Wherein, communication interface 423, processor 422 and memory 421 are by total Line 424 is connected with each other；Bus 424 can be pci bus or eisa bus etc..The bus can be divided into address bus, data Bus, controlling bus etc..For ease of representing, only represented in Figure 15 with a thick line, it is not intended that an only bus or one The bus of type.

In another embodiment of the invention, a kind of computer-readable recording medium, computer-readable storage medium are also provided Computer executed instructions are stored with matter, when at least one computing device of equipment computer executed instructions, the equipment The step of performing emitter in the reference signal sending method that above-mentioned Fig. 6 or Fig. 9 are provided, or perform above-mentioned Fig. 6 or Fig. 9 institutes In the reference signal sending method of offer the step of receiver.

In another embodiment of the invention, a kind of computer program product is also provided, the computer program product includes Computer executed instructions, the computer executed instructions store in a computer-readable storage medium；At least one processing of equipment Device can read the computer executed instructions from computer-readable recording medium, and at least one computing device computer performs The step of instruction causes equipment to implement emitter in the reference signal sending method that above-mentioned Fig. 6 or Fig. 9 is provided, or in implementation The step of stating receiver in the reference signal sending method that Fig. 6 or Fig. 9 are provided.

In another embodiment of the invention, a kind of communication system is also provided, the communication system includes above-mentioned Figure 10-Figure 12 Emitter shown in any one, and receivers of Figure 13-Figure 15 shown in any one；Wherein, emitter is used to perform Fig. 6 or figure In 9 reference signal sending methods provided the step of emitter, receiver is used to perform the reference letter that Fig. 6 or Fig. 9 are provided In number sending method the step of emitter/receiver.

In communication system provided in an embodiment of the present invention, emitter passes through according to the first subcarrier spacing f₁, determine first Subcarrier spacing f₁Corresponding first reference signal sequence, and use the first subcarrier spacing f in its serving cell₁At least The first reference signal sequence is sent in one OFDM symbol, receiver is received first ginseng at least one OFDM symbol Signal sequence is examined, so that the reference signal sequence in same serving cell has higher correlation, different service cells Reference signal sequence there is relatively low correlation, and then avoid on the identical running time-frequency resource in different service cells send with reference to letter Number interference.

Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic； And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and Scope.

Claims

1. a kind of reference signal sending method, it is characterised in that methods described includes：

Emitter is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first reference signal sequence； Wherein, the first subcarrier spacing f₁Refer to the frequency interval of two neighboring subcarrier peak value；

The emitter uses the first subcarrier spacing f in its serving cell₁Described in being sent at least one OFDM symbol First reference signal sequence.

2. according to the method for claim 1, it is characterised in that

First reference signal sequence is according to the first subcarrier spacing f₁, default formation sequence is extracted and obtained；Its In, the default formation sequence includes Gold sequence or ZC sequences；Or

First reference signal sequence by first reference signal sequence correspond to basic sequence root index Q determine, described Q is indexed by the first subcarrier spacing f₁It is determined that.

3. according to the method for claim 2, it is characterised in that if the first subcarrier spacing f₁Between reference subcarrier Every f₀Relation be：The f₁=f₀*2ⁿ, the n is the integer more than or equal to 0, then first reference signal sequence corresponds to base Following relation be present with reference to root index q with described in the root index Q of sequence：Q=q (2ⁿ)²；Wherein, it is described to index q with reference to root as ginseng The root index of basic sequence is examined, it is described to refer to the reference subcarrier interval f with reference to basic sequence₀Corresponding reference signal sequence is corresponding Basic sequence；

The first subcarrier spacing f₁Corresponding first reference signal sequence is according to the first subcarrier spacing f₁, to pre- If formation sequence extract obtain, be specially：According to the first subcarrier spacing f₁With the reference subcarrier interval f₀Pass System, to the default formation sequence every 2ⁿIt is individual to extract an extraction acquisition；Wherein, the default formation sequence is described Reference subcarrier interval f₀The formation sequence of corresponding reference signal sequence.

4. according to the method for claim 3, it is characterised in that methods described also includes：

The emitter determines the sequence group mark of reference signal sequence group used in the serving cell；

The emitter identifies according to the sequence group, determines described with reference to root index q.

5. according to the method for claim 3, it is characterised in that methods described also includes：

The emitter receives the configured information that receiver is sent, and according to the configured information, determines described with reference to root index q。

6. according to the method described in claim any one of 3-5, it is characterised in that methods described also includes：

The emitter is according to the first subcarrier spacing f₁With the length M of first reference signal sequence, from the sequence In first corresponding relation corresponding to group mark, the root index Q that first reference signal sequence corresponds to basic sequence is obtained；Wherein, First corresponding relation comprises at least the first subcarrier spacing f₁, first reference signal sequence length M and With the f₁With the M corresponding to sequence root index, sequence root index corresponds to motif for first reference signal sequence The root index of row.

7. according to the method described in claim any one of 1-6, it is characterised in that if the receiver is base station, the transmitting Machine is according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁It is described before corresponding first reference signal sequence Method also includes：

The emitter receives control signaling or high-level signaling, the control signaling or the high level that the base station is sent Signaling includes the frequency domain resource information that the emitter sends reference signal；

The emitter determines the first subcarrier spacing f according to the frequency domain resource information₁。

8. a kind of reference signal processing method, it is characterised in that methods described includes：

Receiver receiver/transmitter at least one OFDM symbol uses the first subcarrier spacing f in its serving cell₁Send The first subcarrier spacing f₁Corresponding first reference signal sequence；

Wherein, the first subcarrier spacing f₁Corresponding first reference signal sequence is by the emitter according to the described first son Carrier wave interval f₁It is determined.

9. according to the method for claim 8, it is characterised in that methods described also includes：

The receiver determines the second reference signal sequence, and according to the second reference signal sequence of determination, to receive One reference signal sequence is handled；Wherein, second reference signal sequence is according to the first subcarrier spacing f₁Really Fixed.

10. according to the method for claim 9, it is characterised in that

11. according to the method for claim 10, it is characterised in that if the first subcarrier spacing f₁With reference subcarrier It is spaced f₀Relation be：The f₁=f₀*2ⁿ, the n is the integer more than or equal to 0, then first reference signal sequence is corresponding Following relation be present with reference to root index q with described in the root index Q of basic sequence：Q=q (2ⁿ)²；Wherein, it is described to be with reference to root index q Indexed with reference to the root of basic sequence, it is described to refer to the reference subcarrier interval f with reference to basic sequence₀Corresponding reference signal sequence pair The basic sequence answered；

First reference signal sequence is according to the first subcarrier spacing f₁, default formation sequence is extracted and obtained, tool Body is：According to the first subcarrier spacing f₁With the reference subcarrier interval f₀Relation, to the default formation sequence Every 2ⁿIt is individual to extract an extraction acquisition；Wherein, the default formation sequence is the reference subcarrier interval f₀Corresponding ginseng Examine the formation sequence of signal sequence.

12. according to the method for claim 11, it is characterised in that methods described also includes：

The receiver sends configured information to the emitter, so that the emitter is according to the configured information, it is determined that ginseng Examine root index q.

13. according to the method described in claim any one of 8-12, it is characterised in that if the receiver is base station, the side Method also includes：

The base station is sent control signaling to the emitter or high-level signaling, the control signaling or the high-level signaling The frequency domain resource information that the emitter sends reference signal is included, so that the emitter is according to the frequency domain resource information, Determine the first subcarrier spacing f₁。

14. a kind of emitter, it is characterised in that the emitter includes：

Determining unit, for according to the first subcarrier spacing f₁, determine the first subcarrier spacing f₁Corresponding first with reference to letter Number sequence；Wherein, the first subcarrier spacing f₁Refer to the frequency interval of two neighboring subcarrier peak value；

Transmitting element, for using the first subcarrier spacing f in its serving cell₁Sent at least one OFDM symbol First reference signal sequence.

15. emitter according to claim 14, it is characterised in that

16. emitter according to claim 15, it is characterised in that if the first subcarrier spacing f₁With being carried with reference to son Wave spacing f₀Relation be：The f₁=f₀*2ⁿ, the n is the integer more than or equal to 0, then first reference signal sequence pair Answer the root of basic sequence to index Q and following relation be present with reference to root index q with described：Q=q (2ⁿ)²；Wherein, it is described with reference to root index q It is described to refer to the reference subcarrier interval f with reference to basic sequence to be indexed with reference to the root of basic sequence₀Corresponding reference signal sequence Corresponding basic sequence；

17. emitter according to claim 16, it is characterised in that the determining unit, be additionally operable to：

Determine the sequence group mark of reference signal sequence group used in the serving cell；

Identified, determined described with reference to root index q according to the sequence group.

18. emitter according to claim 16, it is characterised in that the emitter also includes：

Receiving unit, for receiving the configured information of receiver transmission；

The determining unit, it is additionally operable to according to the configured information, determines described with reference to root index q.

19. according to the emitter described in claim any one of 16-18, it is characterised in that the determining unit, be additionally operable to

According to the first subcarrier spacing f₁With the length M of first reference signal sequence, identified from the sequence group corresponding The first corresponding relation in, obtain first reference signal sequence and correspond to the root of basic sequence and index Q；Wherein, described first pair It should be related to including at least the first subcarrier spacing f₁, first reference signal sequence length M and with the f₁With Sequence root corresponding to the M indexes, and the sequence root index corresponds to the root index of basic sequence for first reference signal sequence.

20. according to the emitter described in claim any one of 14-19, it is characterised in that if the receiver is base station,

The receiving unit, is additionally operable to receive control signaling or high-level signaling that the base station is sent, the control signaling or High-level signaling described in person includes the frequency domain resource information that the emitter sends reference signal；

The determining unit, it is additionally operable to according to the frequency domain resource information, determines the first subcarrier spacing f₁。

21. a kind of receiver, it is characterised in that the receiver includes：

Receiving unit, at least one OFDM symbol receiver/transmitter use the first subcarrier spacing in its serving cell f₁The the first subcarrier spacing f sent₁Corresponding first reference signal sequence；

22. receiver according to claim 21, it is characterised in that the receiver also includes：

Determining unit, for determining the second reference signal sequence, and according to the second reference signal sequence of determination, to what is received First reference signal sequence is handled；Wherein, second reference signal sequence is according to the first subcarrier spacing f₁ Determine.

23. receiver according to claim 22, it is characterised in that

24. receiver according to claim 23, it is characterised in that if the first subcarrier spacing f₁With being carried with reference to son Wave spacing f₀Relation be：The f₁=f₀*2ⁿ, the n is the integer more than or equal to 0, then first reference signal sequence pair Answer the root of basic sequence to index Q and following relation be present with reference to root index q with described：Q=q (2ⁿ)²；Wherein, it is described with reference to root index q It is described to refer to the reference subcarrier interval f with reference to basic sequence to be indexed with reference to the root of basic sequence₀Corresponding reference signal sequence Corresponding basic sequence；

25. receiver according to claim 24, it is characterised in that the receiver also includes：

Transmitting element, for sending configured information to the emitter, so that the emitter is according to the configured information, it is determined that Q is indexed with reference to root.

26. according to the receiver described in claim any one of 21-25, it is characterised in that if the receiver is base station,

The transmitting element, is additionally operable to send control signaling to the emitter or high-level signaling, the control signaling or The high-level signaling includes the frequency domain resource information that the emitter sends reference signal, so that the emitter is according to the frequency Domain resource information, determine the first subcarrier spacing f₁。

A kind of 27. emitter, it is characterised in that the emitter includes memory, processor, system bus and communication interface, Store code and data in the memory, the processor are connected with the memory by the system bus, the place Code in reason device run memory causes the emitter to perform the reference signal hair described in the claims any one of 1-7 Delivery method.

28. a kind of receiver, the receiver includes memory, processor, system bus and communication interface, in the memory Store code and data, the processor are connected with the memory by the system bus, the processor operation storage Code in device causes the receiver to perform the reference signal processing method described in the claims any one of 8-13.

A kind of 29. communication system, it is characterised in that the communication system includes the emitter described in the claims 27, with And the receiver described in the claims 28.