CN108111273A

CN108111273A - The transmission method and device of reference signal

Info

Publication number: CN108111273A
Application number: CN201710687651.6A
Authority: CN
Inventors: 李永; 鲁照华; 蒋创新; 陈艺戬; 李儒岳
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2018-06-01
Anticipated expiration: 2037-08-11
Also published as: CN114142980B; CN108111273B; CN114142980A

Abstract

The present invention provides the transmission method and device of a kind of reference signal, wherein, this method includes：Base station is terminal configurating channel state information reference signals CSI RS resource parameters, and sends the channel state information reference signals resource parameters to terminal；The base station sends the CSI RS to the terminal according to the CSI RS resource parameters, wherein, which is mapped in the CSI RS on running time-frequency resource corresponding with the CSI RS port indexes number according to CSI RS port indexes number, and is transmitted.Using above-mentioned technical proposal, solve the problems, such as the precoding vectors brought in correlation technique by CSI RS measurement errors to falsely drop probability big, it ensure that terminal is detected CSI RS according to the resource parameters that base station issues, improve transmission stability, significantly reduce and falsely drop probability.

Description

The transmission method and device of reference signal

Technical field

The present invention relates to the communications field, in particular to the transmission method and device of a kind of reference signal.

Background technology

In the related art, with the fast development of life, production to wireless communication needs, the Long Term Evolution skill of forth generation Art (Long Term Evolution, referred to as LTE), long-term evolution upgrading technology (LTE-A, LTE-Advanced) and the 5th New wireless access technology (NR, New RAT, the New Radio Access Technology) scheme in generation is using based on orthogonal The technology of frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) modulation.Based on In the communication system of OFDM technology, OFDM symbol is the unit of transmission signal minimum in time domain, multiple OFDM symbol compositions one A time slot (Slot), the minimum thread using Slot as time domain；Multiple Slot form a frame (Frame), as upper strata The minimum time unit of signal deployment.A subframe (Subframe) is formed with two Slot in LTE/LTE-A, with one Subframe is as minimum thread.In OFDM modulation techniques, there are multiple subcarriers (Subcarrier), one Subcarrier is the unit of transmission signal minimum on frequency domain.In Slot, by the OFDM symbol and frequency domain of time domain Subcarrier forms grid, an element in grid, i.e. one OFDM symbol of time domain and one Subcarrier of frequency domain Crosspoint, is exactly a resource element (RE, Resource Element), it is the least unit of transmission signal.For convenience Frequency domain Subcarrier is divided into multiple resource blocks (RB, Resource Block) by the use of frequency domain resource, and a RB is exactly It is made of continuous multiple subcarriers, can be the RB on RB or Slot on an OFDM symbol, can also singly refer to Frequency domain resource.In order to facilitate use of some functions to resource is defined, RE is also usually divided into resource element groups (RE Group, Resource Element Group), a RE Group is made of multiple RE, such as in order to which control channel uses money The RE Group that source defines,.The maximum bandwidth that single carrier wave can be supported in LTE/LTE-A is 20MHz, maximum Subcarrier is at intervals of 15kHz, and carrier wave frequency range is usually in below 6GHz, and the maximum bandwidth that NR single carrier waves can be supported surpasses Cross 100MHz, maximum Subcarrier intervals have reached 480kHz, carrier wave frequency range can be below 6GHz or More than 6GHz, maximum throughput and spectrum efficiency have raising by a relatively large margin than LTE/LTE-A.

In a wireless communication system, estimate channel usually using reference signal (RS, Reference Signal), such as make Estimated with channel state information reference signals (CSI-RS, Channel-State Information reference signal) Channel, to obtain channel state information as the reference information of scheduling operation；Such as using demodulated reference signal (DMRS, Demodulation Reference Signal) estimate channel coefficients with demodulating data.It is supported in LTE/LTE-A systems to 8 The DMRS of a port, they are distributed in fixed OFDM symbol and fixed Subcarrier in Subframe, that is to say distribution On the RE of fixed position.There are two types of the DMRS of position in NR systems, one kind is preposition demodulated reference signal (Front DMRS), It can use reach 2 OFDM symbols, the position on frequency domain can change with density, if use second OFDM symbol It can also change；Another kind is additional demodulation reference signal (Additional DMRS), it can also use reach 2 OFDM Symbol, the position on frequency domain can change with density, if be made using Additional DMRS and Additional DMRS It is also that can change with 1 OFDM symbol or 2 OFDM symbols.In the wireless communication system based on OFDM technology, passing During defeated CSI-RS, the CSI-RS signal of usual multiple ports is with code division multiplexing (Code Division Multiplexing) Mode share same group of RE Group, such RE Group and be known as CDM RE Group.Downlink Control Information DCI (Downlink Control Information) is transmitted usually in the form of descending control information format (DCI Format), with Quick transmission signaling, such as the signaling of transmitting physical layer.

The NR communication technologys have 4 OFDM symbols to be transmitted for DMRS in Slot, and wherein front DMRS can use two A OFDM symbol, additional DMRS can use two OFDM symbols；And density of the DMRS in frequency is can be with It Slot and changes；And CSI-RS is pre-configured with by top signaling.On the one hand, if CSI-RS uses transmission DMRS's OFDM symbol there is the problem of DMRS and CSI-RS is collided, i.e., sends, interfere with each other on the same resource；The opposing party Face, there is substantial amounts of channel measurement demand in the NR communication technologys, accordingly there is the transmission demand of substantial amounts of CSI-RS, because This has the demand using more OFDM symbol, if the OFDM symbol used without using DMRS, will influence to meet transmission The demand of CSI-RS；So the technical issues that need to address are to be used for transmission CSI-RS using the OFDM symbol for transmitting DMRS, again It does not collide with DMRS.

Receiving terminal obtains the antenna port channel coefficients of transmitting terminal, according between each port by the measurement to CSI-RS Channel coefficients code word or pre-coding matrix are selected from code book to feed back to transmitting terminal, as transmitting terminal use precoding ginseng It examines.Precoding vectors in pre-coding matrix are the combinations of 2D-DFT beam vectors and polarization phases, and polarization phases polarize and tie up The vector of degree.The essence of receiving terminal selection pre-coding matrix is exactly to select 2D-DFT beam vectors and polarization vector, and essence is just It is the beam vector and polarization vector for selecting two dimensions.The vector of any dimension is falsely dropped, and will be directed at falsely dropping for precoding vectors, So as to be directed at falsely dropping for pre-coding matrix.Channel coefficients measurement phase error between any dimension port is more than corresponding dimension and swears The vector that the half of amount granularity will be directed at corresponding dimension is falsely dropped；And the dimension channel coefficients measurement phase error with it is corresponding The ratio of dimension vector granularity is bigger, and the probability that corresponding dimension is falsely dropped is bigger.And the CSI-RS of multiport is typically in multiple RE On be transmitted, there is difference between channel coefficients phase between different RE, so as to cause in different RE or RE groups Channel coefficients measurement error between the port of transmission.The usual phase of channel coefficients difference can be caused by multidiameter delay between frequency domain, Channel coefficients difference is usually caused by frequency deviation, Doppler between time domain；At high frequencies, phase noise can also cause time domain it Between channel coefficients difference, and frequency is higher, and effect of phase noise is more notable.So the technical issues that need to address be reduce by The precoding vectors that CSI-RS measurement errors are brought falsely drop probability.

The more a ports of CSI-RS carried out on frequency domain code division multiplexing occupy in same one RB of OFDM symbol multiple RE or Multiple RE are transmitted in a RB in same OFDM symbol for the CSI-RS uses of person's a port, in the same of enhancing signal When can also enhance interference.The technical issues that need to address are to weaken resulting interference.

In summary, it is necessary to the following technical problem brought during solving CSI-RS transmission：Using transmitting DMRS's OFDM symbol is used for transmission CSI-RS, and does not collide with DMRS；Reduce the code vector that prelists brought by CSI-RS measurement errors Amount falsely drops probability；Weaken interference of the CSI-RS to CSI-RS.

I.e. above-mentioned related art scheme has the following disadvantages：

OFDM symbol transmission CSI-RS and DMRS, wherein CSI-RS and the DMRS difference of transmission DMRS is used in LTE technologies It is transmitted using different RE.In LTE, because the RE of transmission DMRS is changeless, it is possible to so transmit；But In NR technologies, the RE for transmitting DMRS is variation, cannot be solved using the scheme of the different RE in same OFDM symbol respectively The problem of certainly CSI-RS and DMRS uses same OFDM symbol in NR.

Increase the transmit power scheme of CSI-RS in related art scheme, reduce the scheme of interference and can only reduce and drawn by interference The measurement error risen；But the measurement error between antenna port channel coefficients caused by changing in itself due to channel cannot be reduced； The measurement error as caused by phase noise can not be reduced；It can increase reference signal using the scheme of Phase Tracking reference signal Expense, and the expense of the bigger generation of density of Phase Tracking reference signal is bigger.

CSI-RS sequences are more than 2 pseudo-random sequence scheme, meeting in a RB of same OFDM symbol using length Increase length of the CSI-RS in an OFDM symbol, increase the storage cost of transmission both sides from face.

For the problem of probability is big of falsely dropping of the precoding vectors brought in correlation technique by CSI-RS measurement errors, at present There are no effective solutions.

The content of the invention

An embodiment of the present invention provides the transmission method and device of a kind of reference signal, base station and terminal, at least to solve The precoding vectors brought in correlation technique by CSI-RS measurement errors falsely drop the problem of probability is big.

According to one embodiment of present invention, a kind of transmission method of reference signal is provided, including：First communication node For the second communication node configurating channel state information reference signals CSI-RS resource parameter, and send the channel state information ginseng Signal CSI-RS resource parameter is examined to the second communication node；First communication node is sent according to the CSI-RS resource parameter The CSI-RS to second communication node, wherein, first communication node is by the CSI-RS according to CSI-RS ports Call number is mapped on running time-frequency resource corresponding with the CSI-RS port indexes number, and is transmitted.

Optionally, first communication node determines described according to code division multiplexing resource group CDM RE Group call numbers CSI-RS port indexes number.

Optionally, the CSI-RS port indexes number are as the call number of the CDM RE Group increases and increases.

Optionally, the CSI-RS port indexes number are determined by the following formula：P=p '+iL, wherein, the p is described CSI-RS port indexes number, p ' are the code division multiplexing group CDM Group middle port call numbers where the CSI-RS, L before sending It is the port number that the CDM Group include, i is the call number of the CDM Group.

Optionally, first communication node determines the CDM according to the frequency-domain frequency height of the CDM RE Group RE Group call numbers.

Optionally, first communication node determines the CDM RE Group call numbers according to one of following information：Institute State frequency-domain frequency, the time domain sequencing of the CDM RE Group of CDM RE Group.

Optionally, frequency-domain frequency of first communication node in same group of OFDM symbol according to the CDM RE Group Determine the CDM RE Group call numbers；Time domain priority between different groups of OFDM symbols according to the CDM RE Group Order determines the CDM RE Group call numbers.

Optionally, first communication node is according to resource group RE Group positions where the corresponding ports of the CSI-RS Determine the CSI-RS port indexes number.

Optionally, in same OFDM symbol, first communication node is according to RE Group frequencies where the port Domain frequency determines the CSI-RS port indexes number；Between different OFDM symbols, first communication node is according to the port Place RE Group time domain sequencings determine the CSI-RS port indexes number.

Optionally, a CDM RE Group includes one or more RE Group, and first communication node is according to institute The port index number for stating RE Group determines the port index number being mapped on the CDM RE Group.

Optionally, both the demodulated reference signal DMRS that the CSI-RS is sent with first communication node time division multiplexings Identical OFDM symbol.

Optionally, the downlink control that first communication node is sent in the form of descending control information format DCI Format Information DCI processed, wherein, indicate the CSI-RS and DMRS in the OFDM symbol by the Downlink Control Information DCI On time division multiplexing send situation.

Optionally, a domain in the DCI Format is used to indicate the CSI-RS and DMRS described simultaneously Transmission situation in OFDM symbol.

Optionally, a domain in the DCI Format is used to indicate transmission feelings of the DMRS on the symbol Condition, one domain is with CSI-RS described in another domain joint instructions in the DCI Format in the OFDM symbol Transmission situation.

Optionally, the OFDM symbol includes at least one below：The second of front demodulated reference signal front DMRS A OFDM symbol, the symbol of additional demodulated reference signal additional DMRS.

Optionally, first communication node indicates first communication node into line number by the classification of the CSI-RS The scope of the time-domain OFDM symbol used during according to transmission.

Optionally, first communication node by the CSI-RS according to CSI-RS port indexes number be mapped in it is described It is transmitted, further includes on the corresponding running time-frequency resource of CSI-RS port indexes number：First communication node is by the CSI-RS CSI-RS sequences in element be multiplied by element in mask code sequence；By the CSI-RS sequences after multiplication on the running time-frequency resource Transmission.

Optionally, in same OFDM symbol, all resource block RB of bandwidth scope use identical mask sequence Row.

Optionally, the mask code sequence is the subsequence of preset length in the CSI-RS sequences in same OFDM symbol.

Optionally, in same OFDM symbol, first communication node determines the mask according to the call number of RB Sequence.

Optionally, the mask code sequence is the subsequence of preset length in the CSI-RS sequences in same OFDM symbol, The subsequence is determined by the call number of the RB.

Optionally, first communication node configures mask code sequence for the second communication node for it.

According to another embodiment of the invention, a kind of transmission method of reference signal is additionally provided, including：Second communication Node receives the channel state information reference signals resource parameters that the first communication node is sent；Second communication node is according to institute State channel state information reference signals resource parameters receive the first communication node send CSI-RS, wherein, with the channel The CSI-RS is received on the corresponding running time-frequency resource of CSI-RS port indexes number of state information reference signals.

Optionally, the CSI-RS port indexes number are second communication nodes according to code division multiplexing resource group CDM RE Group call numbers determine.

Optionally, the CSI-RS port indexes number are determined by the following formula：

P=p '+iL, wherein, p is the CSI-RS port indexes number, and p ' is the code point where the CSI-RS before sending Multiplexing group CDM Group middle port call numbers, L are the port numbers that the CDM Group include, and i is the CDM Group Call number.

Optionally, the CDM RE Group call numbers are second communication nodes according to the CDM RE Group Frequency-domain frequency height determines.

Optionally, the CDM RE Group call numbers are that second communication node is determined according to one of following information 's：The time domain sequencing of the frequency-domain frequency of the CDM RE Group, the CDM RE Group.

Optionally, by frequency domain frequency of second communication node according to the CDM RE Group in same group of OFDM symbol Rate determines the CDM RE Group call numbers；Between different groups of OFDM symbols as second communication node according to described in The time domain sequencing of CDM RE Group determines the CDM RE Group call numbers.

Optionally, the CSI-RS port indexes number are second communication nodes according to the corresponding ports of the CSI-RS Place resource group RE Group location determinations.

Optionally, in same OFDM symbol, by second communication node according to RE Group where the port Frequency-domain frequency determines the CSI-RS port indexes number；Between different OFDM symbols, by first communication node according to institute RE Group time domain sequencings where stating port determine the CSI-RS port indexes number.

Optionally, a CDM RE Group includes one or more RE Group, is mapped in the CDM RE Group On port index number by second communication node according to the RE Group port index number determine.

Optionally, the downlink control that first communication node is sent by descending control information format DCI Format is received Information DCI processed, wherein, first communication node indicates the CSI-RS and DMRS in the OFDM by the DCI Time division multiplexing on symbol sends situation.

Optionally, the classification of the CSI-RS sent according to first communication node determines that first communication node carries out The scope of the time-domain OFDM symbol used during data transmission.

Optionally, the CSI- is received on running time-frequency resource corresponding with the CSI-RS port indexes number of the CSI-RS RS is further included：Element in the CSI-RS sequences of the CSI-RS is multiplied by the member in mask code sequence by first communication node Element；CSI-RS sequences after multiplication are transmitted on the running time-frequency resource.

Optionally, in same OFDM symbol, the mask code sequence is by index of first communication node according to RB Number determine.

Optionally, the mask code sequence is that first communication node is configured for the second communication node.

According to another embodiment of the invention, a kind of transmitting device of reference signal is additionally provided, it is logical applied to first Believe node, including：Configuration module, for joining for the second communication node configurating channel state information reference signals CSI-RS resource Number, and the channel state information reference signals resource parameters are sent to the second communication node；Sending module, for according to described in CSI-RS resource parameter sends the CSI-RS to second communication node, wherein, the sending module is by the CSI-RS It is mapped on running time-frequency resource corresponding with the CSI-RS port indexes number, and is transmitted according to CSI-RS port indexes number.

According to another embodiment of the invention, a kind of transmitting device of reference signal is provided, applied to the second communication Node, including：First receiving module, for receiving the channel state information reference signals resource ginseng that the first communication node is sent Number；Second receiving module receives what the first communication node was sent according to the channel state information reference signals resource parameters CSI-RS, wherein, it is connect on running time-frequency resource corresponding with the CSI-RS port indexes number of the channel state information reference signals Receive the CSI-RS.

According to another embodiment of the invention, a kind of first communication node is additionally provided, including：First processor is used In for the second communication node configurating channel state information reference signals CSI-RS resource parameter and for by the CSI-RS according to It is mapped according to CSI-RS port indexes number on running time-frequency resource corresponding with the CSI-RS port indexes number；First communication device, For sending the channel state information reference signals resource parameters to the second communication node and according to the CSI-RS resource Parameter sends the CSI-RS to second communication node on the running time-frequency resource.

According to another embodiment of the invention, a kind of second communication node is additionally provided, including：Secondary communication device, For receiving the channel state information reference signals resource parameters that the first communication node is sent；Second processor, for according to institute It states channel state information reference signals resource parameters and receives the CSI-RS that the first communication node is sent, wherein, the processor leads to The secondary communication device is crossed to provide in time-frequency corresponding with the CSI-RS port indexes number of the channel state information reference signals The CSI-RS is received on source.

According to another embodiment of the invention, a kind of storage medium is additionally provided, the storage medium includes storage Program, wherein, described program performs the method described in above-mentioned any one of alternative embodiment when running.

According to another embodiment of the invention, a kind of processor is additionally provided, which is characterized in that the processor is used for Operation program, wherein, described program performs the method described in above-mentioned any one of alternative embodiment when running.

By the present invention, base station is terminal configurating channel state information reference signals CSI-RS resource parameter, and sends and be somebody's turn to do Channel state information reference signals resource parameters are to terminal；The base station sends the CSI-RS according to the CSI-RS resource parameter and extremely should Terminal, wherein, which is mapped in the CSI-RS according to CSI-RS port indexes number corresponding with the CSI-RS port indexes number Running time-frequency resource on, and be transmitted.Using above-mentioned technical proposal, solve in correlation technique and brought by CSI-RS measurement errors Precoding vectors falsely drop the problem of probability is big, ensure that terminal examines CSI-RS according to the resource parameters that base station issues It surveys, improves transmission stability, significantly reduce and falsely drop probability.

Description of the drawings

Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：

Fig. 1 is the flow chart of the transmission method of reference signal according to embodiments of the present invention.

Specific embodiment

A kind of mobile communications network (including but not limited to 5G mobile communications networks), the net are provided in the embodiment of the present application The network architecture of network can include network side equipment (such as base station) and terminal.One kind is provided in the present embodiment to can run on Information transferring method in the above-mentioned network architecture is, it is necessary to illustrate, the above- mentioned information transmission side provided in the embodiment of the present application The running environment of method is not limited to the above-mentioned network architecture.

You need to add is that in present specification, the first communication node can be base station equipment, the second communication node Can also be able to be terminal side equipment with terminal side equipment, certain first communication node, i.e., two communication nodes are device-to-devices Communication.

Embodiment one

A kind of transmission method for the reference signal for running on above-mentioned base station is provided in the present embodiment, and Fig. 1 is according to this The flow chart of the transmission method of the reference signal of inventive embodiments, as shown in Figure 1, the flow includes the following steps：

Step S102, base station is terminal configurating channel state information reference signals CSI-RS resource parameter, and sends and be somebody's turn to do CSI-RI resource parameters are to terminal；

Step S104, the base station send the CSI-RS to the terminal according to the CSI-RS resource parameter, wherein, which will The CSI-RS is mapped according to CSI-RS port indexes number on running time-frequency resource corresponding with the CSI-RS port indexes number, and is carried out Transmission.

By above-mentioned steps, base station is terminal configurating channel state information reference signals CSI-RS resource parameter, and is sent The CSI-RI resource parameters are to terminal；The base station sends the CSI-RS to the terminal according to the CSI-RS resource parameter, wherein, it should The CSI-RS is mapped according to CSI-RS port indexes number on running time-frequency resource corresponding with the CSI-RS port indexes number by base station, And it is transmitted.Using above-mentioned technical proposal, solve the precoding vectors brought in correlation technique by CSI-RS measurement errors Falsely drop the problem of probability is big, ensure that the resource parameters that terminal is issued according to base station are detected CSI-RS, improve biography Defeated stability, significantly reduces and falsely drops probability.

Optionally, the executive agent of above-mentioned steps can be base station etc., but not limited to this.

Optionally, which determines the CSI-RS port indexes according to code division multiplexing resource group CDM RE Group call numbers Number.

Optionally, which is determined by the following formula：P=p '+iL, wherein, p is the CSI-RS ends Stomochord quotation marks, p ' are the code division multiplexing group CDM Group middle port call numbers where the CSI-RS before sending, and L is the CDM The port number that Group includes, i are the call numbers of the CDM Group.

Optionally, which determines the CDM RE Group indexes according to the frequency-domain frequency height of the CDM RE Group Number.

Optionally, which determines the CDM RE Group call numbers according to one of following information：The CDM RE Group Frequency-domain frequency, the time domain sequencing of the CDM RE Group.

Optionally, frequency-domain frequency of the base station according to the CDM RE Group in same group of OFDM symbol determines the CDM RE Group call numbers；Time domain sequencing according to the CDM RE Group between different groups of OFDM symbols determines the CDM RE Group call numbers.

Optionally, the base station is according to resource group RE Group location determinations CSI-RS where the corresponding ports of the CSI-RS Port index number.

Optionally, in same OFDM symbol, which determines this according to RE Group frequency-domain frequencies where the port CSI-RS port indexes number；Between different OFDM symbols, the base station is true according to RE Group time domain sequencings where the port The fixed CSI-RS port indexes number.

Optionally, a CDM RE Group includes one or more RE Group, and the base station is according to the RE Group's Port index number determines the port index number being mapped on the CDM RE Group.

Optionally, the identical OFDM of both the CSI-RS and demodulated reference signal DMRS that the base station is sent time division multiplexing is accorded with Number.

Optionally, the Downlink Control Information DCI which is sent in the form of descending control information format DCI Format, Wherein, indicate that time division multiplexings of the CSI-RS and DMRS in the OFDM symbol sends feelings by Downlink Control Information DCI Condition.

Optionally, a domain in the DCI Format is used to indicate the CSI-RS and DMRS in the OFDM symbol simultaneously On transmission situation.

Optionally, a domain in the DCI Format is used to indicate transmission situations of the DMRS on the symbol, this one Transmission situation of a domain with another domain joint instructions CSI-RS in the DCI Format in this OFDM symbol.

Optionally, which includes at least one below：Second of front demodulated reference signal front DMRS OFDM symbol, the symbol of additional demodulated reference signal additional DMRS.

Optionally, the time domain OFDM used when which indicates that the base station carries out data transmission by the classification of the CSI-RS The scope of symbol.

Optionally, which is mapped in the CSI-RS and the CSI-RS port indexes number according to CSI-RS port indexes number It is transmitted, further includes on corresponding running time-frequency resource：The base station element in the CSI-RS sequences of the CSI-RS is multiplied by mask Element in sequence；CSI-RS sequences after multiplication are transmitted on the running time-frequency resource.

Optionally, which is the subsequence of preset length in the CSI-RS sequences in same OFDM symbol.

Optionally, in same OFDM symbol, which determines the mask code sequence according to the call number of RB.

Optionally, which is the subsequence of preset length in the CSI-RS sequences in same OFDM symbol, should Subsequence is determined by the call number of the RB.

Optionally, which configures mask code sequence for terminal for it.

According to another embodiment of the invention, additionally provide a kind of transmission method of reference signal, this method include with Lower step：

Step 1, terminal receive the CSI-RI resource parameters that base station is sent；

Step 2, the terminal according to the CSI-RI resource parameters receive base station send CSI-RS, wherein, with the CSI- The CSI-RS is received on the corresponding running time-frequency resource of CSI-RS port indexes number of RI.

Optionally, which is the terminal according to code division multiplexing resource group CDM RE Group call numbers Definite.

Optionally, which is that the terminal is true according to the frequency-domain frequency height of the CDM RE Group Fixed.

Optionally, which is that the terminal is determined according to one of following information：The CDM RE The time domain sequencing of the frequency-domain frequency of Group, the CDM RE Group.

Optionally, the CDM is determined by frequency-domain frequency of the terminal according to the CDM RE Group in same group of OFDM symbol RE Group call numbers；It is true according to the time domain sequencing of the CDM RE Group by the terminal between different groups of OFDM symbols The fixed CDM RE Group call numbers.

Optionally, which is the terminal according to resource group RE where the corresponding ports of the CSI-RS Group location determinations.

Optionally, in same OFDM symbol, determined by the terminal according to RE Group frequency-domain frequencies where the port The CSI-RS port indexes number；Between different OFDM symbols, by the base station according to RE Group time domains priority where the port Order determines the CSI-RS port indexes number.

Optionally, a CDM RE Group includes one or more RE Group, is mapped on the CDM RE Group Port index number by the terminal according to the RE Group port index number determine.

Optionally, the Downlink Control Information DCI that the base station is sent by descending control information format DCI Format is received, Wherein, which indicates that time division multiplexings of the CSI-RS and DMRS in the OFDM symbol sends situation by the DCI.

Optionally, the time domain that the classification of the CSI-RS sent according to the base station uses when determining that the base station carries out data transmission The scope of OFDM symbol.

Optionally, the CSI-RS is received on running time-frequency resource corresponding with the CSI-RS port indexes number of the CSI-RS, also Including：Element in the CSI-RS sequences of the CSI-RS is multiplied by the base station element in mask code sequence；By the CSI- after multiplication RS sequences are transmitted on the running time-frequency resource.

Optionally, in same OFDM symbol, which is determined by call number of the base station according to RB.

Optionally, which is that the base station is configured for terminal.

It is described in detail with reference to the preferred embodiment of the present invention.

A kind of method of transmission of reference signals is provided in the preferred embodiment of the present invention, including：Configure CSI-RS resource ginseng Number transmits the CSI-RS resource parameter of the configuration, transmits CSI-RS according to CSI-RS resource parameter, is pressed including CSI-RS It is mapped on running time-frequency resource and is transmitted according to port index number；

For example, base station configures CSI-RS resource parameter, the CSI-RS resource parameter of the configuration is transmitted, is provided according to CSI-RS Source parameter transmission CSI-RS, is mapped on running time-frequency resource according to port index number including CSI-RS and is transmitted；

For example, base station configures CSI-RS resource parameter, the CSI-RS resource parameter of the configuration is transmitted, terminal is according to CSI- RS resource parameters transmit CSI-RS, are mapped on running time-frequency resource and are transmitted according to port index number including CSI-RS；

For example, CSI-RS resource parameter includes：The port number of CSI-RS

For example, CSI-RS resource parameter includes：The port code division multiplexing length of CSI-RS, i.e., code division multiplexing institute between port The length of the orthogonal sequence used；

For example, CSI-RS resource parameter includes：The classification of the port code division multiplexing of CSI-RS

For example, CSI-RS resource parameter includes：The number for the OFDM symbol that CSI-RS is used

For example, CSI-RS resource parameter includes：The position for the OFDM symbol that CSI-RS is used or call number

For example, CSI-RS resource parameter includes：The call number for the OFDM symbol that CSI-RS is used

For example, CSI-RS resource parameter includes：It polymerize the classification of the component of CSI-RS RE pattern

For example, CSI-RS resource parameter includes：It polymerize the position of the component of CSI-RS RE pattern

For example, CSI-RS resource parameter includes：It polymerize the call number of the component of CSI-RS RE pattern

For example, CSI-RS resource parameter includes：Power parameter

Alternative embodiment 1:Wherein the port index number of CSI-RS is determined by CDM RE Group call numbers；

Such as：CSI-RS is mapped on running time-frequency resource according to port index number and is transmitted, the port index number of CSI-RS Call number according to CDM RE Group increases and reduces.

Alternative embodiment 1-1:CSI-RS is mapped on running time-frequency resource according to port index number and is transmitted, the end of CSI-RS Stomochord quotation marks are increased by the call number of CDM RE Group and are increased；

Such as：P=(p'-P₀)·K+i+P₀, p is the port index number sent, and p ' is CDM Group middle ports before sending Call number, i are the call numbers of CDM Group；K is CDM Group numbers；It is the port starting symbol of CSI-RS；

Such as：Work as p'<P₀During+L/2, p=p'+iL/2；Work as p'>P₀During+L/2, p=p'+iL/2+N/2；P is the end sent Stomochord quotation marks, p ' are CDM Group middle port call numbers before sending, and i is the call number of CDM Group；N is the number of port；L It is port number that CDM Group include and the length of CDM；It is the port starting symbol of CSI-RS.

Alternative embodiment 1-1-1:P=p'+iL, p are the port indexes number sent, and p ' is CDM Group middle-ends before sending Stomochord quotation marks, L are the port number that CDM Group include and the length of CDM；I is the call number of CDM Group.

Alternative embodiment 1-2：CSI-RS is mapped on running time-frequency resource according to port index number and is transmitted, the end of CSI-RS Stomochord quotation marks are determined that CDM RE Group call numbers are determined according to frequency-domain frequency height by CDM RE Group call numbers

Such as：The high CDM Group call numbers of frequency are small, and the low CDM Group call numbers of frequency are big；

Such as：The high CDM Group call numbers of frequency are high, and the low CDM Group call numbers of frequency are small.

Alternative embodiment 1-2-1：CDM RE Group call numbers are determined according to frequency-domain frequency height, successively true according to time domain It is fixed；

Such as：The high CDM Group call numbers of frequency are small, and the low CDM Group call numbers of frequency are big, early in time domain CDM Group call numbers are small, in time domain after CDM Group call numbers it is big；

Such as：The high CDM Group call numbers of frequency are high, and the low CDM Group call numbers of frequency are small；It is early in time domain CDM Group call numbers are small, in time domain after CDM Group call numbers it is big.

Alternative embodiment 1-2-1-1：CDM RE Group call numbers are in same group of OFDM symbol according to frequency-domain frequency height It determines, is successively determined according to time domain between different groups；

Such as：With in group OFDM symbol, the high CDM Group call numbers of frequency are small, the low CDM Group call numbers of frequency Greatly；Difference group OFDM symbols in, early CDM Group call numbers are small in time domain, in time domain after CDM Group call numbers it is big；

Such as：With in group OFDM symbol, the high CDM Group call numbers of frequency are high, the low CDM Group call numbers of frequency It is small；Difference group OFDM symbols in, early CDM Group call numbers are small in time domain, in time domain after CDM Group call numbers it is big.

Alternative embodiment 2：CSI-RS port indexes number RE Group location determinations where corresponding ports

Such as：CSI-RS port indexes number are determined by place RE Group frequency domains height；

Such as：CSI-RS port indexes number are successively determined by place RE Group time domains.

Alternative embodiment 2-1:In same OFDM symbol, CSI-RS port indexes number are high by place RE Group frequency domains It is low to determine；Between different OFDM symbols, CSI-RS port indexes number are successively determined by place RE Group time domains.

Such as：With in OFDM symbol, the high corresponding port indexes number of RE Group of frequency are small, the low RE Group of frequency Corresponding port index number is big；Between different OFDM symbols, the early corresponding port indexes number of RE Group are small in time domain, time domain The corresponding port indexes number of RE Group after upper are big；

Such as：With in OFDM symbol, the corresponding port index height of the high RE Group of frequency, the low RE Group of frequency Corresponding port index number is small；Between different OFDM symbols, the early corresponding port indexes number of RE Group are small in time domain, time domain The corresponding port indexes number of RE Group after upper are big.

Alternative embodiment 2-2：CDM RE Group include RE Group, the port index being mapped on CDM RE Group Number by the RE Group port index number determine.

Such as：The port index number that CDM RE Group include 2 RE Group, first RE Group is { p_0,0, p_0,1, the port index number of second RE Group is { p_1,0,p_1,1, it is determined by the port index number of described two RE Group The port index number of CDM RE Group is { p_0,0,p_0,1,p_1,0,p_1,1}

Such as：The call number that CDM RE Group include 2 RE Group, first RE Group is k₀, it is corresponding Port index number is { p₀,p₁, the call number of second RE Group is k₁, corresponding port index number is { p₀,p₁, by institute The port index number for stating the definite CDM RE Group of port index number of two RE Group is { 2k₀+p_0,0,2·k₀+p_0,1, 2·k₁p_1,0,2·k₁p_1,1}。

Alternative embodiment 3：OFDM symbol identical with DMRS time division multiplexings CSI-RS

For example, CSI-RS uses the OFDM symbol of same position or same index number on different Slot respectively from DMRS OFDM symbol；The Slot is a time-domain transmission unit being made of multiple OFDM symbols；

Either CSI-RS uses the OFDM symbol or same index of same position on different Frame from DMRS respectively Number OFDM symbol；The Frame is the time-domain transmission unit being made of multiple Slot.

Alternative embodiment 3-1：It is sent by time division multiplexing of the DCI instructions for CSI-RS and DMRS in the OFDM symbol Situation.

Such as：Transmission situations of the domain instruction DMRS on the symbol in DCI Format, in DCI Format Transmission situations of another domain instruction CSI-RS in the OFDM symbol.

Alternative embodiment 3-1-1：A domain in DCI Format indicates that CSI-RS and DMRS is accorded in the OFDM simultaneously Transmission situation on number；

For example, state or the state instruction of the numerical value formed that the bit formed using whole bit in a domain is gone here and there are simultaneously Indicate CSI-RS and transmission situations of the DMRS in the OFDM symbol

Such as：The state or the state instruction of the numerical value formed that the bit formed using the part bit in a domain is gone here and there are same When indicate CSI-RS and transmission situations of the DMRS in the OFDM symbol

Such as：The state or the state instruction of the numerical value formed that the bit formed using the part bit in a domain is gone here and there are same When transmission situations of the DMRS in the OFDM symbol；The state that the bit formed using another part bit in a domain is gone here and there, Or transmission situations of the state instruction CSI-RS of the numerical value formed in the OFDM symbol.

Alternative embodiment 3-1-2：Transmission situations of the domain instruction DMRS on the symbol in DCI Format, on State transmission situation of the domain with another domain joint instructions CSI-RS in DCIFormat in the OFDM symbol.

Such as：The domain instruction DMRS of DCI Format is sent on the symbol, another domain of DCI Format Instruction CSI-RS is sent simultaneously on identical symbol, is finally combined by the two domains and is determined that instruction CSI-RS is not sent；

Such as：The domain instruction DMRS of DCI Format is sent on the symbol, another domain of DCI Format Instruction CSI-RS is not sent on identical symbol, is finally combined by the two domains and is determined that instruction CSI-RS is not sent；

Such as：The domain instruction DMRS of DCI Format is not sent in the symbol, another domain of DCI Format Instruction CSI-RS is sent on identical symbol, is finally combined by the two domains and is determined that instruction CSI-RS is sent out on the symbol It send；

Such as：The domain instruction DMRS of DCI Format is not sent in the symbol, another domain of DCI Format Instruction CSI-RS is not sent on identical symbol, is finally combined by the two domains and is determined instruction CSI-RS on the symbol not It sends.

Alternative embodiment 3-2：The OFDM symbol includes at least one below：For second OFDM of front DMRS Symbol, for the symbol of additional DMRS.

Such as：First OFDM symbol of additional DMRS；

Such as：Second OFDM symbol of additional DMRS；

Such as：First OFDM symbol of additional DMRS is accorded with second OFDM of additional DMRS Number.

Alternative embodiment 3-3：The classification of the CSI-RS is aperiodic classification.

Such as：It is triggered by physical layer signaling, just sends CSI-RS once；

Such as：It is triggered by Mac-CE signalings, just sends CSI-RS once.

Alternative embodiment 4：The classification of CSI-RS indicates the scope of the time-domain OFDM symbol of its transmission

For example, the time-domain OFDM symbol scope that the classification instruction CSI-RS of CSI-RS is sent；

For example, the time-domain OFDM symbol scope that the classification instruction CSI-RS of CSI-RS is received；

For example, the classification of cycle or semi-durable CSI-RS instruction CSI-RS transmission time-domain OFDM symbol scope be divided by Other symbols outside lower OFDM symbol：The first OFDM symbols of front DMRS, the second OFDM symbols of front DMRS, The OFDM symbol of addtional DMRS；

For example, the transmission time-domain OFDM symbol scope of the classification instruction CSI-RS of aperiodic CSI-RS is except following OFDM is accorded with Other symbols of extra：The first OFDM symbol of front DMRS.

Alternative embodiment 5:CSI-RS is mapped to RE, further includes following operation：Element in the CSI-RS sequences multiplies With the element in mask code sequence；

The mask code sequence is the sequence that a length is L, and L is number of sub carrier wave of the RB on frequency domain, the member in mask Element is corresponded with the RE in RB frequency domains；The element that element is multiplied by mask code sequence in the CSI-RS sequences refers to CSI-RS Each element is multiplied by the element in the corresponding mask code sequences of its transmission RE in sequence.

Alternative embodiment 5-1:On same symbol, all RB of bandwidth scope use identical mask code sequence；

For example, predetermined bandwidth is a part for system bandwidth；

For example, predetermined bandwidth is system bandwidth；

For example, bandwidth of the predetermined bandwidth for a carrier wave；

A for example, part of the predetermined bandwidth for a carrier bandwidths；

For example, bandwidth of the predetermined bandwidth for configuration.

Alternative embodiment 5-1-2:Mask code sequence is the sub- sequence that one section of length in the CSI-RS sequences on same symbol is L Row；

Such as：The subsequence that the continuous element of the length L originated with r elements in CSI-RS sequences is formed；

Such as：With the subsequence of a length of L of header element starting in CSI-RS sequences；

Such as：The length that the element at equal intervals for M originated using r elements in CSI-RS sequences is formed is the subsequence of L；

Such as：Starting elemental changes with the sequence number of symbol.

Alternative embodiment 5-2:On same symbol, mask code sequence is determined by the call number of RB.

Alternative embodiment 5-2-1：Mask code sequence is the sub- sequence that one section of length in the CSI-RS sequences on same symbol is L Row, subsequence are determined by the call number of RB；

Such as：Subsequence is that length is L in CSI-RS sequences continuous element is formed, initial position r, r by RB rope Quotation marks and change；

Such as：The length that element using CSI-RS sequences equal intervals as M is formed for L subsequence；M by RB call number It determines；

Such as：The length that the element at equal intervals for M originated using r elements in CSI-RS sequences is formed is the subsequence of L； R is determined by the call number of RB；

Alternative embodiment 5-3:Mask code sequence is configured for terminal；Such as：Mask code sequence is by top signaling to terminal It is configured.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but it is very much In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, which is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), used including some instructions so that a station terminal equipment (can be mobile phone, calculate Machine, server or network equipment etc.) perform method described in each embodiment of the present invention.

Embodiment two

Additionally provide a kind of transmitting device of reference signal in the present embodiment, the device be used to implement above-described embodiment and Preferred embodiment had carried out repeating no more for explanation.As used below, term " module " can realize predetermined work( The combination of the software and/or hardware of energy.It is hard although following embodiment described device is preferably realized with software The realization of the combination of part or software and hardware is also what may and be contemplated.

According to another embodiment of the invention, a kind of transmitting device of reference signal is provided, applied to base station, the dress Put including：

Configuration module, for for terminal configurating channel state information reference signals CSI-RS resource parameter, and described in sending Channel state information reference signals resource parameters are to terminal；

Sending module is connected to the configuration module, for sending the CSI-RS according to the CSI-RS resource parameter To the terminal, wherein, the CSI-RS is mapped in and the CSI- by the sending module according to CSI-RS port indexes number On the corresponding running time-frequency resource of RS port indexes number, and it is transmitted.

According to another embodiment of the invention, a kind of transmitting device of reference signal is provided, applied to terminal, bag It includes：

First receiving module, for receiving the channel state information reference signals resource parameters of base station transmission；

Second receiving module receives the CSI- of base station transmission according to the channel state information reference signals resource parameters RS, wherein, receive institute on running time-frequency resource corresponding with the CSI-RS port indexes number of the channel state information reference signals State CSI-RS.

It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong In the following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with arbitrary The form of combination is located in different processors respectively.

Embodiment three

According to another embodiment of the invention, a kind of base station is additionally provided, including：

First processor, for for terminal configurating channel state information reference signals CSI-RS resource parameter and being used for The CSI-RS is mapped according to CSI-RS port indexes number on running time-frequency resource corresponding with the CSI-RS port indexes number；

First communication device, for sending the channel state information reference signals resource parameters to terminal and foundation The CSI-RS resource parameter sends the CSI-RS to the terminal on the running time-frequency resource.

According to another embodiment of the invention, a kind of terminal is additionally provided, including：

Secondary communication device, for receiving the channel state information reference signals resource parameters of base station transmission；

Second processor, for receiving the CSI- of base station transmission according to the channel state information reference signals resource parameters RS, wherein, the processor is by the secondary communication device at the CSI-RS ends with the channel state information reference signals The CSI-RS is received on the corresponding running time-frequency resource of stomochord quotation marks.

Example IV

According to another embodiment of the invention, a kind of processor is provided, the processor is used for operation program, In, described program performs the method described in above-mentioned any one of alternative embodiment when running.

Embodiment five

Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general Computing device realize that they can concentrate on single computing device or be distributed in multiple computing devices and be formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored Performed in the storage device by computing device, and in some cases, can be performed with the order being different from herein shown in The step of going out or describing they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.It to be combined in this way, the present invention is not limited to any specific hardware and softwares.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of transmission method of reference signal, which is characterized in that including：

First communication node is the second communication node configurating channel state information reference signals resource parameters, and sends the channel State information reference signals resource parameters are to the second communication node；

First communication node sends the channel state information according to the channel state information reference signals resource parameters Reference signal to second communication node, wherein, first communication node by the channel state information reference signals according to It is right with the channel state information reference signals port index number to be mapped according to channel state information reference signals port index number On the running time-frequency resource answered, and it is transmitted.

2. according to the method described in claim 1, it is characterized in that, first communication node is according to code division multiplexing resource group rope Quotation marks determine the channel state information reference signals port index number.

3. according to the method described in claim 2, it is characterised in that it includes：

The channel state information reference signals port index number is as the call number of the code division multiplexing resource group increases and increases Add.

4. according to the method described in claim 1, it is characterized in that, determine that the channel state information refers to by the following formula Signal port call number：

P=p ,+iL, wherein, the p is the channel state information reference signals port index number, and p ' is the letter before sending Code division multiplexing group middle port call number where channel state information reference signal, L are the ports that the code division multiplexing group includes Number, i are the call numbers of the code division multiplexing group.

5. according to the method described in claim 2, it is characterized in that, first communication node is according to the code division multiplexing resource The frequency-domain frequency height of group determines the code division multiplexing resource group index number.

6. according to the method described in claim 5, it is characterized in that, first communication node is determined according to one of following information The code division multiplexing resource group index number：The frequency-domain frequency of the code division multiplexing resource group, the code division multiplexing resource group when Domain sequencing.

7. according to the method described in claim 6, it is characterized in that, first communication node is accorded in same group of Orthogonal Frequency Division Multiplexing Frequency-domain frequency in number according to the code division multiplexing resource group determines the code division multiplexing resource group index number；It is orthogonal at different groups Time domain sequencing between frequency division multiplexing symbol according to the code division multiplexing resource group determines the code division multiplexing resource group rope Quotation marks.

8. according to the method described in claim 1, it is characterized in that, first communication node is according to the channel state information Channel state information reference signals port index number described in resource group location determination where the corresponding port of reference signal.

9. according to the method described in claim 8, it is characterized in that, in same OFDM symbol, described first Communication node determines the channel state information reference signals port index number according to resource group frequency-domain frequency where the port； Between different orthogonal frequency division multiplexing symbol, first communication node is true according to resource group time domain sequencing where the port The fixed channel state information reference signals port index number.

10. according to the method described in claim 8, it is characterized in that, a code division multiplexing resource group includes one or more provide Source group, first communication node determine to be mapped in the code division multiplexing resource group according to the port index number of the resource group Port index number.

11. the according to the method described in claim 1, it is characterized in that, channel state information reference signals and described first The identical OFDM symbol of both demodulated reference signals that communication node is sent time division multiplexing.

12. according to the method for claim 11, which is characterized in that first communication node is with descending control information format The Downlink Control Information DCI that sends of form, wherein, pass through the Downlink Control Information DCI and indicate the channel state information Time division multiplexing of the reference signal with the demodulated reference signal on the OFDM symbol sends situation.

13. according to the method for claim 12, which is characterized in that a domain in the descending control information format is used for Indicate the channel state information reference signals with the demodulated reference signal on the OFDM symbol simultaneously Transmission situation.

14. according to the method for claim 12, which is characterized in that a domain in the descending control information format is used for Indicate transmission situation of the demodulated reference signal on the symbol, one domain in the descending control information format Another domain joint instructions described in transmission situation of the channel state information reference signals on the OFDM symbol.

15. according to the method for claim 11, which is characterized in that the OFDM symbol include at least it is following it One：Second OFDM symbol of front demodulated reference signal, the symbol of additional demodulated reference signal.

16. according to the method described in claim 1, it is characterized in that, first communication node is believed by the channel status The classification of breath reference signal indicates the time domain orthogonal frequency division multiplexing symbol used when first communication node carries out data transmission Scope.

17. according to the method described in claim 1, it is characterized in that, first communication node is by the channel state information Reference signal is mapped in and the channel state information reference signals end according to channel state information reference signals port index number It is transmitted, further includes on the corresponding running time-frequency resource of stomochord quotation marks：

First communication node will be in the channel state information reference signals sequence of the channel state information reference signals Element is multiplied by the element in mask code sequence；

Channel state information reference signals sequence after multiplication is transmitted on the running time-frequency resource.

18. according to the method for claim 17, which is characterized in that on same OFDM symbol, predetermined band All resource blocks of wide scope use identical mask code sequence.

19. according to the method for claim 18, which is characterized in that the mask code sequence is same Orthogonal Frequency Division Multiplexing symbol The subsequence of preset length in channel state information reference signals sequence on number.

20. according to the method for claim 17, which is characterized in that on same OFDM symbol, described the One communication node determines the mask code sequence according to the call number of resource block.

21. according to the method for claim 20, which is characterized in that the mask code sequence is same Orthogonal Frequency Division Multiplexing symbol The subsequence of preset length in channel state information reference signals sequence on number, the subsequence by the resource block index Number determine.

22. according to the method for claim 17, which is characterized in that first communication node is for the second communication node It configures mask code sequence.

23. a kind of transmission method of reference signal, which is characterized in that including：

Second communication node receives the channel state information reference signals resource parameters that the first communication node is sent；

Second communication node receives the first communication node according to the channel state information reference signals resource parameters and sends Channel state information reference signals, wherein, with the channel state informations of the channel state information reference signals with reference to believing The channel state information reference signals are received on number corresponding running time-frequency resource of port index number.

24. according to the method for claim 23, which is characterized in that the channel state information reference signals port index number It is that second communication node is definite according to code division multiplexing resource group index number.

25. according to the method for claim 24, which is characterized in that the channel state information reference signals port index number As the call number of the code division multiplexing resource group increases and increase.

26. according to the method for claim 25, which is characterized in that determine that the channel state information is joined by the following formula Examine signal port call number：

P=p ,+iL, wherein, p is the channel state information reference signals port index number, and p ' is the channel shape before sending Code division multiplexing group middle port call number where state information reference signal, L are the port numbers that the code division multiplexing group includes, I is the call number of the code division multiplexing group.

27. according to the method for claim 24, which is characterized in that the code division multiplexing resource group index number is described second Communication node is determined according to the frequency-domain frequency height of the code division multiplexing resource group.

28. according to the method for claim 27, which is characterized in that the code division multiplexing resource group index number is described second Communication node is determined according to one of following information：The frequency-domain frequency of the code division multiplexing resource group, the code division multiplexing resource The time domain sequencing of group.

29. according to the method for claim 28, which is characterized in that by described second in same group of OFDM symbol Communication node determines the code division multiplexing resource group index number according to the frequency-domain frequency of the code division multiplexing resource group；At different groups It is true according to the time domain sequencing of the code division multiplexing resource group by second communication node between OFDM symbol The fixed code division multiplexing resource group index number.

30. according to the method for claim 23, which is characterized in that the channel state information reference signals port index number It is second communication node according to resource group location determination where the corresponding port of the channel state information reference signals.

31. according to the method for claim 30, which is characterized in that in same OFDM symbol, by described Second communication node determines channel state information reference signals port rope according to resource group frequency-domain frequency where the port Quotation marks；Between different orthogonal frequency division multiplexing symbol, by first communication node according to resource group time domain where the port Sequencing determines the channel state information reference signals port index number.

32. according to the method for claim 30, which is characterized in that a code division multiplexing resource group includes one or more provide Source group is mapped in the port index number in the code division multiplexing resource group by second communication node according to the resource group Port index number determines.

33. according to the method for claim 23, which is characterized in that the channel state information reference signals and described first The identical OFDM symbol of both demodulated reference signals that communication node is sent time division multiplexing.

34. according to the method for claim 33, which is characterized in that receive first communication node and controlled by downlink and believed The Downlink Control Information DCI that form is sent is ceased, wherein, first communication node indicates the channel status by the DCI Time division multiplexing of the information reference signal with the demodulated reference signal on the OFDM symbol sends situation.

35. according to the method for claim 34, which is characterized in that a domain in the descending control information format is used for Indicate the channel state information reference signals with the demodulated reference signal on the OFDM symbol simultaneously Transmission situation.

36. according to the method for claim 34, which is characterized in that a domain in the descending control information format is used for Indicate transmission situation of the demodulated reference signal on the symbol, one domain in the descending control information format Another domain joint instructions described in transmission situation of the channel state information reference signals on the OFDM symbol.

37. according to the method for claim 33, which is characterized in that the OFDM symbol include at least it is following it One：Second OFDM symbol of front demodulated reference signal, the symbol of additional demodulated reference signal.

38. according to the method for claim 23, which is characterized in that the channel status sent according to first communication node The classification of information reference signal determines that the time domain orthogonal frequency division multiplexing used when first communication node carries out data transmission accords with Number scope.

39. according to the method for claim 23, which is characterized in that in the channel with the channel state information reference signals The channel state information reference signals are received on the corresponding running time-frequency resource of state information reference signals port index number, are also wrapped It includes：

40. according to the method for claim 39, which is characterized in that on same OFDM symbol, predetermined band All resource blocks of wide scope use identical mask code sequence.

41. according to the method for claim 40, which is characterized in that the mask code sequence is same Orthogonal Frequency Division Multiplexing symbol The subsequence of preset length in channel state information reference signals sequence on number.

42. according to the method for claim 39, which is characterized in that described to cover on same OFDM symbol Code sequence is determined by call number of first communication node according to resource block.

43. according to the method for claim 42, which is characterized in that the mask code sequence is same Orthogonal Frequency Division Multiplexing symbol The subsequence of preset length in channel state information reference signals sequence on number, the subsequence by the resource block index Number determine.

44. according to the method for claim 39, which is characterized in that the mask code sequence is that first communication node is directed to The configuration of second communication node.

45. a kind of transmitting device of reference signal, applied to the first communication node, which is characterized in that including：

Configuration module for for the second communication node configurating channel state information reference signals resource parameters, and sends the letter Channel state information reference signal resource parameter is to the second communication node；

Sending module, for sending the channel state information reference according to the channel state information reference signals resource parameters Signal to second communication node, wherein, the sending module is by the channel state information reference signals according to channel shape State information reference signal port call number is mapped in time-frequency corresponding with the channel state information reference signals port index number In resource, and it is transmitted.

46. a kind of transmitting device of reference signal, applied to the second communication node, which is characterized in that including：

First receiving module, for receiving the channel state information reference signals resource parameters that the first communication node is sent；

Second receiving module receives the letter of the first communication node transmission according to the channel state information reference signals resource parameters Channel state information reference signal, wherein, at the channel state information reference signals end with the channel state information reference signals The channel state information reference signals are received on the corresponding running time-frequency resource of stomochord quotation marks.

47. a kind of first communication node, which is characterized in that including：

First processor, for for the second communication node configurating channel state information reference signals resource parameters and for inciting somebody to action The channel state information reference signals are mapped in and the channel shape according to channel state information reference signals port index number On the corresponding running time-frequency resource of state information reference signal port call number；

First communication device, for send the channel state information reference signals resource parameters to the second communication node and The channel state information reference is sent on the running time-frequency resource according to the channel state information reference signals resource parameters Signal is to second communication node.

48. a kind of second communication node, which is characterized in that including：

Secondary communication device, for receiving the channel state information reference signals resource parameters that the first communication node is sent；

Second processor, for receiving what the first communication node was sent according to the channel state information reference signals resource parameters Channel state information reference signals, wherein, the processor by the secondary communication device with the channel state information The channel state information is received on the corresponding running time-frequency resource of channel state information reference signals port index number of reference signal Reference signal.

49. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein, when described program is run Perform the method described in 1 to 44 any one of the claims.

50. a kind of processor, which is characterized in that the processor is used for operation program, wherein, it is performed when described program is run State the method described in 4 any one of Claims 1-4.