CN107046458A

CN107046458A - Sending, receiving method, device and the Transmission system of reference signal

Info

Publication number: CN107046458A
Application number: CN201610082887.2A
Authority: CN
Inventors: 陈宪明; 戴博; 张雯; 方惠英; 夏树强; 鲁照华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-02-05
Filing date: 2016-02-05
Publication date: 2017-08-15
Also published as: WO2017133676A1

Abstract

The invention provides a kind of sending, receiving method of reference signal, device and Transmission system, wherein, sending method includes：An arrowband in all arrowbands used for system, reference signal is sent according to one below mode：Reference signal is sent in all effective subframes；Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and exist and send reference signal in the MBSFN sub-frame of data transfer；Reference signal is sent in the subframe of presence data transfer in all effective subframes；Predefined subframe in all effective subframes and exist and send reference signal on non-predetermined foster son's frame of data transfer；Wherein, effective subframe is the subframe with Transmission system data capability.Solve in correlation technique in the case where NB IoT systems use multiple arrowbands simultaneously, the problem of how transmitting NB RS.

Description

Sending, receiving method, device and the Transmission system of reference signal

Technical field

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

Background technology

To meet honeycomb Internet of Things (Cellular Internet of Things, abbreviation C-IoT) demand, design is named as arrowband Internet of Things The new access system of net (NarrowBand-Cellular Internet of Things, abbreviation NB-IoT) is in third generation affiliate It is suggested in plan (3rd Generation Partnership Project, abbreviation 3GPP) the 69th plenary session of tissue.Wherein, institute The radio access technologies of NB-IoT systems concern low complex degree and poor throughput are stated, main goal in research includes：Improved interior Covering, the support of flood tide low throughput users equipment, low delay sensitivity, ultralow equipment cost, low plant capacity loss And the network architecture.The transmitted bandwidth of the up-downgoing of the NB-IoT systems is all 180kHz, with Long Term Evolution (Long Term Evolution, abbreviation LTE) one Physical Resource Block of system (Physical Resource Block, abbreviation PRB) bandwidth phase Together, this relevant design for being conducive to reusing existing LTE system in NB-IoT systems.In addition, the NB-IoT systems are also propped up Hold 3 kinds of different operator schemes：1) independent (Stand-alone) operation, for example using currently by global mobile communication edge without The frequency spectrum that line access (GSM EDGE Radio Access Network, abbreviation GERAN) system is used with replace 1 or Multiple global system for mobile communications (Global system for Mobile Communication, referred to as GSM) carrier waves；2) protect Protecting band (Guard band) is operated, for example, utilize the resource block being not used by the range of a LTE carrier protection band；3) band Interior (In-band) is operated, for example, utilize the resource block in a normal LTE reference carrier wave.

It is to reduce implementation complexity as far as possible in 3GPP RAN1 meetings, it is adaptable under all operator schemes and all physics The NB-IoT reference signals (NarrowBand-Reference Signal, abbreviation NB-RS) of row channel are suggested.In addition, being Improve power system capacity and/or obtain frequency diversity gain, the NB-IoT systems can use multiple 180kHz arrowband simultaneously, wherein One arrowband is used as master (Anchor) arrowband, at least for transmitting master sync signal/auxiliary synchronous signals (NarrowBand- Primary Synchronization Signal/Secondary synchronization Signal, abbreviation NB-PSS/SSS) and physics it is wide Broadcast channel (NarrowBand-Physical Broadcast Channel, abbreviation NB-PBCH) data.

In NB-IoT systems simultaneously using in the case of multiple arrowbands, the problem of on how to transmit NB-RS, not yet carry at present Go out effective solution.

The content of the invention

The invention provides a kind of sending, receiving method of reference signal, device and Transmission system, at least to solve correlation technique In in NB-IoT systems simultaneously using in the case of multiple arrowbands, the problem of how transmitting NB-RS.

According to an aspect of the invention, there is provided a kind of sending method of reference signal, including：For owning that system is used An arrowband in arrowband, reference signal is sent according to one below mode：Reference signal is sent in all effective subframes； Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and exist and send ginseng in the MBSFN sub-frame of data transfer Examine signal；Reference signal is sent in the subframe of presence data transfer in all effective subframes；It is pre- in all effective subframes Define subframe and exist and send reference signal on non-predetermined foster son's frame of data transfer；Wherein, effective subframe is with Transmission system The subframe of data capability.

Further, an arrowband in above-mentioned all arrowbands is main arrowband or non-master arrowband；Wherein, main arrowband is for transmitting Master sync signal PSS and auxiliary synchronous signals SSS and Physical Broadcast Channel PBCH data arrowband.

Further, in the case where system is FDD system, predefining subframe includes at least one of subframe： Numbering is 0,4,5 and 9 subframe；In the case where system is TDD system, predefining subframe is included below extremely One of few subframe：Numbering is 0,1,5 and 6 subframe.

Further, data include at least one of：Physical Broadcast Channel PBCH data are carried on, are carried under physics Row control channel PDCCH data, are carried on Physical Downlink Shared Channel PDSCH data.

Further, reference signal is the reference signal of single port or the reference signal of two-port.

Further, for main arrowband and non-master arrowband, reference signal is sent in the same fashion.

Further, for main arrowband and non-master arrowband, reference signal is sent in different ways, wherein, when main arrowband is pressed Impinge upon the mode that reference signal is sent in all effective subframes, or, according to the non-MBSFN sub-frame in all effective subframes and When the mode that there is transmission reference signal in the MBSFN sub-frame of data transfer sends reference signal, non-master arrowband is in such a way One of send reference signal：Reference signal is sent in the subframe of presence data transfer in all effective subframes, all effective Predefined subframe in subframe and exist and send reference signal in the subframe of data transfer；When main arrowband is according in all effective subframes In predefined subframe and the existing when mode of reference signal is sent in the subframe of data transfer sending reference signal, non-master arrowband is pressed The mode for impinging upon transmission reference signal in the subframe of the presence data transfer in all effective subframes sends reference signal.

Further, when the operator scheme of system is operates with interior In-band, indicate to drill for a long time by least one following signaling Enter LTE cell special reference signal CRS information：The Master Information Block MIB signalings that are carried in PBCH, it is carried on PDSCH In system information block SIB signalings；Wherein, LTE CRS information includes at least one of：Port number information, sequence information, Precoding matrix information, power information.

Further, sequence information includes at least one of：First element of the LTE CRS sequences that main arrowband is used is most The relatively main arrowband in position of index, non-master arrowband in LTE system bandwidth in long length LTE CRS sequences is in LTE system The biasing of position in bandwidth, LTE system bandwidth, main arrowband shared PRB in LTE system bandwidth index, non-master arrowband The shared PRB index in LTE system bandwidth；Wherein, maximum length LTE CRS sequences are that maximum LTE system bandwidth makes LTE CRS sequences.

Further, for an arrowband in all arrowbands, continuous L subframe or effective subframe use identical reference signal Sequence, wherein L are the integer more than 1.

Further, when the operator scheme of system operates for In-band, effective subframe of the identical numbering in different narrow band is used Identical or different reference signal sequence；Wherein, effective subframe of the identical numbering in different narrow band uses different reference signals Sequence includes：The reference signal sequence that effective subframe in one arrowband is used is equal to the corresponding LTE CRS sequences of the effective subframe.

Further, when the operator scheme of system is protection band Guard band operations or independent Stand-alone operation, effectively Subframe includes the subframe that master sync signal PSS and/or auxiliary synchronous signals SSS is transmitted is not present in all subframes.

According to an aspect of the invention, there is provided a kind of method of reseptance of reference signal, including：In the case of received data, Reference signal is received on the first running time-frequency resource, or, receive reference signal on the first running time-frequency resource and Long Term Evolution LTE is small Area special reference signal CRS；Wherein, the first running time-frequency resource is the running time-frequency resource of the data occupancy received；Performing channel measurement Or in the case of radio frequency resource management RRM measurements, at least one of is received on the second running time-frequency resource：Reference signal, LTE CRS；Wherein, the second running time-frequency resource is one below：M subframe in main arrowband or non-master arrowband, positioned at X not With the M subframe in arrowband；Wherein, M is greater than 0 integer, and X is greater than 1 integer.

Further, main arrowband is the main arrowband in all arrowbands that system is used, and non-master arrowband is all arrowbands that system is used In a non-master arrowband, X different narrow band is X different narrow band in all arrowbands that system is used；Main arrowband be for Transmit the arrowband of master sync signal PSS and auxiliary synchronous signals SSS and Physical Broadcast Channel PBCH data.

Further, M subframe includes one below：Continuous N effectively subframe；Continuous N in all effective subframes is non- MBSFN sub-frame；There is the subframe of publicly-owned data transfer in the continuous N in all effective subframes；Company in all effective subframes Continuous M predefined subframes；Continuous N given sub-frame in all effective subframes；Wherein, given sub-frame includes one below： Non-multicast Broadcast Single Frequency Network MBSFN sub-frame and the MBSFN sub-frame that there is publicly-owned data transfer；Predefine subframe and exist public There is non-predetermined foster son's frame of data transfer；Non-MBSFN sub-frame, the MBSFN that there is the unicast data transmission for being sent to terminal device Subframe and the MBSFN sub-frame that there is publicly-owned data transfer；Predefine subframe, there is the unicast data transmission for being sent to terminal device Non-predetermined foster son frame and there is non-predetermined foster son's frame of publicly-owned data transfer；Wherein, effective subframe is with Transmission system data The subframe of ability.

Further, the signal received on first running time-frequency resource is determined according at least one of information：Operator scheme, Covering grade, data type；The signal for determining to receive on second running time-frequency resource according at least one of information：Operation Pattern, narrowband type；Wherein, aforesaid operations pattern includes operating with interior In-band operations, protection band Guard band and independent Stand-alone is operated；Above-mentioned narrowband type includes main arrowband and non-master arrowband；Above-mentioned data type includes obtaining LTE CRS letters The data received after the data and acquisition LTE CRS information that are received before breath.

Further, when the operator scheme of system operates for In-band, the signaling for indicating LTE CRS information is received： Wherein, signaling includes at least one of：The Master Information Block MIB signalings that are carried in PBCH, it is carried in PDSCH System information block SIB signalings；LTE CRS information includes at least one of：Port number information, sequence information, precoding square Battle array information, power information.

Further, LTE CRS are received on the first running time-frequency resource includes：As the port number K of reference signal₁It is less than or equal to LTE CRS port number K₂When, LTE CRS are received one of in such a way：It is 0 to K to receive numbering₁- 1 K₁Individual end The LTE CRS of mouth；It is 0 to K to receive numbering₂- 1 K₂The LTE CRS of individual port；Wherein, the K₁, K₂For positive integer.

Further, LTE CRS are received one of in such a way on the second running time-frequency resource：Receive 1 end that numbering is 0 The LTE CRS signals of mouth；It is 0 to K to receive numbering₂- 1 K₂The LTE CRS of individual port；Wherein, K₂For LTE CRS Port number, K₂For positive integer.

Further, data include at least one of：Physical Broadcast Channel PBCH data are carried on, are carried under physics Row control channel PDCCH data, are carried on Physical Downlink Shared Channel PDSCH data；Publicly-owned data are included below extremely It is one of few：PBCH Master Information Block MIB data are carried on, PDSCH system information block SIB data are carried on.

Further, the above method can also include：In the case where performing above-mentioned channel measurement or above-mentioned RRM measurements, in hair Send and auxiliary synchronous signals SSS is received on auxiliary synchronous signals SSS running time-frequency resource.

According to an aspect of the invention, there is provided a kind of dispensing device of reference signal, applied to base station, including：Send mould Block, for an arrowband in all arrowbands for being used for system, reference signal is sent according to one below mode：All Reference signal is sent in effective subframe；Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and there are data Reference signal is sent in the MBSFN sub-frame of transmission；Sent in the subframe of presence data transfer in all effective subframes with reference to letter Number；Predefined subframe in all effective subframes and exist and send reference signal on non-predetermined foster son's frame of data transfer；Wherein, Effective subframe is the subframe with Transmission system data capability.

According to an aspect of the invention, there is provided a kind of reception device of reference signal, applied to terminal, including：First connects Module is received, in the case of received data, receiving reference signal on the first running time-frequency resource, or, in the first time-frequency money Reference signal and Long Term Evolution LTE cell special reference signals CRS are received on source；Wherein, the first running time-frequency resource is the number received According to the running time-frequency resource of occupancy；Second receiving module, in the case of being measured in execution channel measurement or radio frequency resource management RRM, At least one of is received on the second running time-frequency resource：Reference signal, LTE CRS；Wherein, the second running time-frequency resource for it is following it One：M subframe in main arrowband or non-master arrowband, the M subframe in X different narrow band；Wherein, M is Integer more than 0, X is greater than 1 integer.

According to an aspect of the invention, there is provided a kind of Transmission system of reference signal, including：Including above-mentioned dispensing device Base station and the terminal of above-mentioned reception device.

An arrowband in all arrowbands used by the present invention for system, reference signal is sent according to one below mode： Reference signal is sent in all effective subframes；Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and Exist and reference signal is sent in the MBSFN sub-frame of data transfer；In the subframe of presence data transfer in all effective subframes Send reference signal；Predefined subframe in all effective subframes and exist and send reference on non-predetermined foster son's frame of data transfer The mode of signal, is solved in correlation technique in NB-IoT systems while using in the case of multiple arrowbands, how to transmit NB-RS The problem of.

Brief description of the drawings

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, of the invention shows Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：

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

Fig. 2 a are the two-port reference signal patterns under normal cyclic prefix CP according to embodiments of the present invention；

Fig. 2 b are the two-port reference signal patterns under extension CP according to embodiments of the present invention；

Fig. 3 is the flow chart of the method for reseptance of reference signal according to embodiments of the present invention；

Fig. 4 is the structured flowchart of the dispensing device of reference signal according to embodiments of the present invention；

Fig. 5 is the structured flowchart of the reception device of reference signal according to embodiments of the present invention.

Embodiment

Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the case where not conflicting, The feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing etc. is to use In distinguishing similar object, without for describing specific order or precedence.

A kind of sending method of reference signal is provided in the present embodiment, and Fig. 1 is reference signal according to embodiments of the present invention The flow chart of sending method, as shown in figure 1, the flow comprises the following steps：

Step S102, obtains reference signal；

An arrowband in step S104, all arrowbands used for system, reference signal is sent according to one below mode： Reference signal is sent in all effective subframes；Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and Exist and reference signal is sent in the MBSFN sub-frame of data transfer；In the subframe of presence data transfer in all effective subframes Send reference signal；Predefined subframe in all effective subframes and exist and send reference on non-predetermined foster son's frame of data transfer Signal；Wherein, effective subframe is the subframe with Transmission system data capability.

By way of above-mentioned steps are there is provided transmission of reference signals, i.e., the mode there is provided transmission NB-RS solves correlation In technology in the case where NB-IoT systems use multiple arrowbands simultaneously, the problem of how transmitting NB-RS.Meanwhile, by upper The mode of stating transmits NB-RS and avoids reference signal always to be sent in all subframes, and then is avoided with interior In-band behaviour Interference of the NB-IoT systems to LTE system under operation mode, equally solves and how to reduce under with interior In-band operator schemes NB-IoT systems to the interference of LTE system the problem of.

It should be noted that this method can not also include S102, but directly step S104 is above-mentioned to complete also to can solve the problem that Technical problem, however it is not limited to this.

It should be noted that this method is equally applicable to said system only using the situation of an arrowband.

It should be noted that the above-mentioned subframe with Transmission system data capability, you can the subframe for Transmission system data.

It should be noted that if not otherwise specified, reference signal of the present invention is the reference signal of said system, is Narrowband reference signal (NB-RS).

It should be noted that said system can be arrowband Internet of Things NB-IoT systems, above-mentioned data can be NB-IoT data But it is not limited to this；Above-mentioned reference signal can refer to NB-IoT system reference signal NB-RS, but be not limited to this.

It should be noted that by taking FDD system and with interior In-band operator schemes as an example, but be not intended as limiting, In the range of a LTE radio frames, for an arrowband in above-mentioned all arrowbands, it is assumed that numbering is 2,3,7 and 8 son Frame is configurable for multicast and broadcast multimedia service (the Multicast and Broadcast Media Service, letter of LTE system Claim MBMS) transmission, then above-mentioned effective subframe can include the subframe that numbering is 0,1,4,5,6 and 9, i.e., all Reference signal is sent in effective subframe can show as the subframe that the numbering in a LTE radio frames is 0,1,4,5,6 and 9 Upper transmission reference signal.Assuming that in the subframe i.e. 6 effectively subframe that above-mentioned numbering is 0,1,4,5,6 and 9, subframe 1 and 6 It is configured as LTE system Multicast Broadcast Single Frequency Network (Multicast and Broadcast Single Frequency Network, letter Claim MBSFN) subframe, then the non-MBSFN sub-frame in all effective subframes and exist in the MBSFN sub-frame of data transfer Sending reference signal can show as：In spite of there is data transfer in subframe 1,4,5 and 9, reference signal is all sent, In subframe 1 and 6, only just send reference signal in the subframe 1 and/or 6 that there is data transfer, if subframe 1 and/or NB-IoT data transfers are not present on 6, then do not send reference signal in subframe 1 and/or 6.Assuming that effectively sub at above-mentioned 6 In frame, data transfer is not present in subframe 1 and 6, there is data transfer in subframe 0,4,5 and 9, then have all Sending reference signal in the subframe of presence data transfer in effect subframe can show as：Ginseng is sent in subframe 0,4,5 and 9 Examine signal.Assuming that subframe is predefined in above-mentioned 6 effective subframes includes subframe 0,4,5 and 9, then in all effective subframes Predefined subframe and exist and reference signal is sent on non-predetermined foster son's frame of data transfer can show as：No matter subframe 0,4,5 With 9 on whether there is data transfer, send reference signal all the time in subframe 0,4,5 and 9, for subframe 1 and 6, if There is data transfer, then send reference signal in the subframe 1 and/or 6 that there is data transfer, if do not deposited in subframe 1 and 6 In data transfer, then reference signal is not sent in subframe 1 and/or 6.

It should be noted that above-mentioned " in a LTE radio frames scope " is to be that the transmission for being illustrated more clearly that reference signal is asked Inscribe assume a time interval, this be not limiting upon reference signal be in the range of other one or more LTE radio frames by Reference signal is sent according to same mode.

It should be noted that an arrowband in all arrowbands that said system is used can based on arrowband or non-master arrowband；Wherein, Main arrowband is the arrowband for transmitting master sync signal PSS and auxiliary synchronous signals SSS and Physical Broadcast Channel PBCH data. In the case of the arrowband during FDD system is in said one arrowband, above-mentioned predefined subframe can include at least one of subframe： Numbering is 0,4,5 and 9 subframe；Further, primary/secondary synchronization is not present in the subframe that above-mentioned numbering is 0,4,5 and 9 The subframe of signal PSS/SSS transmission can be as above-mentioned predefined subframe, but is not limited to this；It it is the time-division in said one arrowband In the case of arrowband in duplexed TDD system, above-mentioned predefined subframe can include at least one of：Numbering is 0,1,5 With 6 subframe；Further, primary/secondary synchronizing signal PSS/SSS is not present in the subframe that above-mentioned numbering is 0,1,5 and 6 to pass Defeated subframe can be used as above-mentioned predefined subframe, however it is not limited to this.

It should be noted that the main arrowband and non-master arrowband in all arrowbands that said system is used have different effective subframes, By taking FDD system and In-band operator schemes as an example, the son for transmitting primary/secondary synchronizing signal PSS/SSS is used in above-mentioned main arrowband Frame can not typically be used as effective subframe of main arrowband, but in the numbering in an above-mentioned non-master arrowband and above-mentioned main arrowband The numbering identical subframe of transmission PSS/SSS subframes can but be used as effective subframe in above-mentioned non-master arrowband, now be showed There are different effective subframes for main arrowband and non-master arrowband.

If it should be noted that being not specifically stated, PSS/SSS of the present invention is the PSS/SSS of said system；This hair The bright subframe is the subframe in the arrowband (main arrowband or non-master arrowband) in all arrowbands, and effective subframe is all Effective subframe in an arrowband (main arrowband or non-master arrowband) in arrowband.

It should be noted that above-mentioned main arrowband is also referred to as Anchor arrowbands.

It should be noted that an arrowband in all arrowbands that said system is used is equal to the up-downgoing transmitted bandwidth of system, its It is identical with a Physical Resource Block PRB of Long Term Evolution LTE system bandwidth, for example all it is 180KHz bandwidth, thus on Stating an arrowband can also be replaced with a PRB, however it is not limited to this.

It should be noted that above-mentioned reference signal is used in terminal device demodulating data or carries out channel measurement or progress radio frequency resource Manage (Radio Resource Management, abbreviation RRM) measurement；Wherein, above-mentioned RRM measurements include reference signal Receiving power (Reference Signal Received Power, abbreviation RSRP) is measured and Reference Signal Received Quality (Reference Signal Received Quality, abbreviation RSRQ) measurement.

Above-mentioned data can include at least one of：Physical Broadcast Channel PBCH data are carried on, physical down is carried on The data of control channel (Physical Downlink Control Channel, abbreviation PDCCH), are carried on physical down and share The data of channel (Physical Downlink Shared Channel, abbreviation PDSCH).Above-mentioned reference signal can be single port Reference signal or two-port reference signal.

Fig. 2 a are the references of the two-port under normal cyclic prefix (Cyclic Prefix, abbreviation CP) according to embodiments of the present invention Signal pattern, Fig. 2 b are the reference signal pattern of the two-port under extension CP according to embodiments of the present invention, such as Fig. 2 a and Fig. 2 b It is shown, for the reference signal of two-port, its on frequency domain with LTE cells special reference signal (Cell-specific Reference Signal, abbreviation CRS) identical subcarrier is used, most latter two orthogonal frequency of each time slot in subframe is taken in time domain (Orthogonal Frequency Division Multiplexing, abbreviation OFDM) symbol is multiplexed, the reference signal of single port Pattern is identical with the pattern of one of port in the pattern of the reference signal of two-port.

In one embodiment of the invention, for main arrowband and non-master arrowband, reference signal can be sent according to same way, Such as reference signal all can be sent in all effective subframes, but be not limited to this, certainly, for main arrowband and non-master arrowband, Reference signal can also be differently sent, such as：When main arrowband is according to the transmission reference signal in all effective subframes Mode, or, according to the non-MBSFN sub-frame in all effective subframes and exist and sent in the MBSFN sub-frame of data transfer When the mode of reference signal sends reference signal, non-master arrowband sends reference signal one of in such a way：In all effective sons Reference signal is sent in the subframe that there is data transfer in frame, subframe is predefined in all effective subframes and there is data transfer Reference signal is sent on non-predetermined foster son's frame；Or, when main arrowband is according to the predefined subframe in all effective subframes and there is number When sending reference signal according to the mode that reference signal is sent on non-predetermined foster son's frame of transmission, non-master arrowband is according in all effective sons The mode that there is transmission reference signal on data transmission subframes in frame sends reference signal；It is not limited to this.

In one embodiment of the invention, when the operator scheme of said system is operates with interior In-band, independent of above-mentioned System, LTE CRS are constantly present (i.e. base station can always send LTE CRS), now, also can indicate that LTE CRS information To terminal device, specifically, above-mentioned LTE CRS information is indicated by least one of signaling：It is carried on the master in PBCH Block of information (Master Information Block, abbreviation MIB) signaling, the system information block (System being carried in PDSCH Information Block, abbreviation SIB) signaling；Above-mentioned SIB is one in all SIB types that said system is supported, example Such as the first SIB types (abbreviation SIB1)；Above-mentioned LTE CRS information includes at least one of：Port number information, sequence letter Breath, precoding matrix information, power information；It is not limited to this.

It should be noted that above-mentioned LTE CRS can simultaneously be used in terminal demodulating data with above-mentioned reference signal and carry out channel Or RRM measurements；Or, above-mentioned LTE CRS can also be independently used for carrying out channel or RRM measurements in terminal.

Above-mentioned sequence information can include at least one of, but be not limited to this：

Index of first element of the LTE CRS sequences that main arrowband is used in maximum length LTE CRS sequences, non-master are narrow The biasing of position of the relatively main arrowband in position of the band in LTE system bandwidth in LTE system bandwidth, LTE system bandwidth, master Arrowband shared PRB index, non-master arrowband shared PRB in LTE system bandwidth in LTE system bandwidth index；Its In, maximum length LTE CRS sequences are LTE CRS sequences used in maximum LTE system bandwidth.

In one embodiment of the invention, an arrowband in all arrowbands used for said system, continuous L subframe Or effectively subframe can use identical reference signal sequence, wherein L is the integer more than 1；Wherein, in above-mentioned all arrowbands An arrowband be main arrowband or non-master arrowband.When the operator scheme of system operates for In-band, it is all that said system is used Effective subframe of the identical numbering in different narrow band in arrowband can use identical or different reference signal sequence；Wherein, make It can be included with different reference signal sequences：The reference signal sequence that an effective subframe in one arrowband is used has equal to this Imitate the corresponding LTE CRS sequences of subframe.

It should be noted that being operated in the operator scheme of said system for protection band Guard band or independent Standalone operations When, it is different from In-band operator schemes, due to not needing backward compatibility LTE system (for example, backward compatibility LTE system MBMS service transmission, but be not limited to this), an arrowband in all arrowbands used for system, effective subframe can be wrapped Include and the subframe that PSS/SSS is transmitted is not present in all subframes；That is, all (such as 10) son in the range of a radio frames The subframe that PSS/SSS transmission is not present in frame is all effective subframe.

A kind of method of reseptance of reference signal is provided in the present embodiment, and Fig. 3 is reference signal according to embodiments of the present invention The flow chart of method of reseptance, as shown in figure 3, the flow comprises the following steps：

Step S302, in the case of received data, receives reference signal on the first running time-frequency resource, or, in the first time-frequency Reference signal and Long Term Evolution LTE cell special reference signals CRS are received in resource；Wherein, the first running time-frequency resource is reception The running time-frequency resource that data take；In the case where performing channel measurement or radio frequency resource management RRM measurements, in the second running time-frequency resource Upper reception at least one of：Reference signal, LTE CRS；Wherein, the second running time-frequency resource is one below：Positioned at main arrowband or M subframe in non-master arrowband, the M subframe in X different narrow band；Wherein, M is greater than 0 integer, X It is greater than 1 integer；

Step S304, the data received using above-mentioned reference signal and/or LTE the CRS demodulation received, or believed Road is measured or radio frequency resource management RRM measurements.

By the above method, in different situations, reference signal and/or LTE CRS are received in different running time-frequency resources, thus Solve in correlation technique in the case where NB-IoT systems use multiple arrowbands simultaneously, the problem of how transmitting NB-RS.

It should be noted that step S304 can not be included in the above-mentioned methods, just it can solve the problem that only with above-mentioned steps S302 Above-mentioned technical problem.

It should be noted that to represent that above-mentioned M subframe is not located at same for the above-mentioned M subframe being located in X different narrow band In individual arrowband.Only there is narrow-band reception ability in view of terminal device, i.e., it is narrow to be located at two or more without reception simultaneously The ability of two or more subframes of band, the above-mentioned M subframe being located in X different narrow band will not include time-domain position phase Two or more subframes same but positioned at different narrow band.For example, so that X is equal to 4 and M equal to 6 as an example, positioned at 4 not Can be following 6 subframes with 6 subframes in arrowband：Son in subframe 0 and subframe 1 in first arrowband, the second arrowband Subframe 9 in subframe 6 in frame 4 and subframe 5, the 3rd arrowband, the 4th arrowband.

It should be noted that the main arrowband in all arrowbands that above-mentioned main arrowband, which is system, to be used, non-master arrowband is that system is used A non-master arrowband in all arrowbands, X different narrow band is X different narrow band in all arrowbands that system is used；Master is narrow Band is the arrowband for transmitting master sync signal PSS and auxiliary synchronous signals SSS and Physical Broadcast Channel PBCH data.

Said system can be arrowband Internet of Things NB-IoT systems, and above-mentioned data can be NB-IoT data, above-mentioned reference signal It can be NB-IoT reference signal NB-RS, but be not limited to this；An arrowband in all arrowbands that said system is used is equal to The up-downgoing transmitted bandwidth of system, it is identical with a Physical Resource Block PRB of Long Term Evolution LTE system bandwidth, for example all For 180Hz bandwidth, thus said one arrowband can also be replaced with a PRB, however it is not limited to this.

It should be noted that the running time-frequency resource that the data of above-mentioned reception take can be an arrowband (main arrowband or non-master arrowband) In at least one effective subframe, or, be at least two effective sons in different narrow band (including main arrowband and non-master arrowband) Frame；Exemplified by with interior In-band operator schemes and a LTE radio frames scope, terminal device receive data shared by when Frequency resource can be 3 effective subframes (such as subframe 0, subframe 4 and subframe 5) positioned at main arrowband, or, can be position 4 effective subframes (such as subframe 0, subframe 4, subframe 5 and subframe 9) in a non-master arrowband；Or, can be located at 4 effective subframes (such as subframe 0, subframe 4, subframe 5 and subframe 9) in different narrow band, such as with different positioned at two Exemplified by non-master arrowband, the running time-frequency resource shared by the data of reception is subframe 0 and subframe 4 in a non-master arrowband and another Subframe 5 and subframe 9 in individual non-master arrowband.

It should be noted that above-mentioned M subframe can include at least one of：Continuous N effectively subframe；All effective sons Continuous N non-multicast Broadcast Single Frequency Network MBSFN sub-frame in frame；There is publicly-owned number in the continuous N in all effective subframes According to the subframe of transmission；The predefined subframe of continuous N in all effective subframes；Continuous N in all effective subframes specifies son Frame；Wherein, given sub-frame includes one below：Non-MBSFN sub-frame and the MBSFN sub-frame that there is publicly-owned data transfer；In advance Define subframe and there is non-predetermined foster son's frame of publicly-owned data transfer；Non-MBSFN sub-frame, there is the unicast for being sent to terminal device The MBSFN sub-frame of data transfer and the MBSFN sub-frame that there is publicly-owned data transfer；Predefined subframe, exist and be sent to terminal The non-predetermined foster son frame of the unicast data transmission of equipment and the non-predetermined foster son's frame that there is publicly-owned data transfer；Wherein, effective subframe For the subframe with Transmission system data capability.Wherein, the terminal device being sent in the unicast data of terminal device refers to receive The terminal device of above-mentioned reference signal and/or LTE CRS.

Pass through the concrete meaning of above-mentioned M subframe so that can be by M subframe defined above on the second running time-frequency resource Send above-mentioned reference signal, it is to avoid interference of the NB-IoT systems to LTE system.

By taking FDD system and In-band operator schemes as an example, illustrate in the case where receiving the data that base station is sent, at first The scheme of reference signal is received in frequency resource, but is not intended as limiting, in the range of a LTE radio frames, it is assumed that in the LTE In radio frames base station be sent to terminal device data take arrowband all effective subframes (subframe 0, subframe 1, subframe 4, Subframe 5, subframe 6 and subframe 9), then when terminal device receives the data that base station is sent, all effective subframes (the in the arrowband One running time-frequency resource) on receive data and reference signal simultaneously；For another example：Assuming that base station is sent in the range of the LTE radio frames The data of terminal device take the subframe 0 and subframe 1 of an arrowband (the first arrowband), and take another arrowband (second Arrowband) subframe 4, subframe 5, subframe 6 and subframe 9, then when terminal device receive base station send data when, it is narrow first In the subframe 0 and subframe 1 and the subframe 4 in the second arrowband of band, subframe 5, subframe 6 and subframe 9 (the first running time-frequency resource) Data and reference signal are received simultaneously；Wherein, the reference signal is used to demodulate above-mentioned data.

By taking FDD system and In-band operator schemes as an example, illustrate in the case where performing channel measurement or RRM measurements, the On two running time-frequency resources receive reference signal scheme, but be not intended as limit, specifically, it is assumed that terminal device a LTE without The initial time of line frame starts to perform RRM measurements, while assume for an arrowband in above-mentioned all arrowbands, numbering is 2, 3rd, 7 and 8 subframe is configurable for the MBMS transmission of LTE system, and the subframe 9 in master (Anchor) arrowband is used In PSS/SSS transmission, then for non-master arrowband, above-mentioned effective subframe can be 0,1,4,5,6 and 9 including numbering Subframe, for main arrowband, above-mentioned effective subframe can include the subframe that numbering be 0,1,4,5 and 6, it is assumed that terminal is set Reference signal is received in the standby continuous N in main arrowband effectively subframe, M is greater than 0 integer, if M is equal to 5, that Receiving reference signal in above-mentioned continuous N effectively subframe can show as in the numbering of the radio frames being 0,1,4,5 and 6 Subframe on receive reference signal, if M is equal to 8, in continuous N effectively subframe receiving reference signal can show as Connect in the subframe that the subframe and the numbering of next radio frames that are 0,1,4,5 and 6 in the numbering of the radio frames are 0,1 and 4 Receive reference signal.

Assume again that subframe 1 and subframe 6 in 5 effective subframes of above-mentioned main arrowband are configured as MBSFN of LTE system Frame, terminal device receives reference signal in the continuous N non-MBSFN sub-frame in all effective subframes of main arrowband, if Above-mentioned M, which is equal to reception reference signal in 5, the continuous N non-MBSFN sub-frame in above-mentioned all effective subframes, to be showed For：Received in the subframe 0 and subframe 4 of the subframe 0, subframe 4 and subframe 5 and next radio frames of the radio frames with reference to letter Number；Or, the terminal device continuous N in all effective subframes of main arrowband is specified and receives reference signal in effective subframe, M is greater than 0 integer, wherein, this specifies non-MBSFN that effective subframe is included in all effective subframes of main arrowband Frame and the MBSFN sub-frame that there is publicly-owned data transfer, if for example, subframe 1 (MBSFN sub-frame) quilt effectively in subframe It is equal to 6 for publicly-owned data transfer and M, then is received in above-mentioned all effective subframes in continuous N given sub-frame with reference to believing Number it can show as：In the subframe 0 of the LTE radio frames, subframe 1, subframe 4 and subframe 5 and next LTE radio frames Subframe 0 and subframe 1 on receive reference signal.

Assume again that subframe 0, subframe 4 and subframe 5 in 5 effective subframes of above-mentioned main arrowband have publicly-owned data transfer, terminal Reference signal is received in effective subframe that the equipment continuous N in all effective subframes of main arrowband has publicly-owned data transfer, M is greater than 0 integer；If for example, above-mentioned M is equal to 6, existed in the continuous N of above-mentioned all effective subframes publicly-owned Reference signal is received in the subframe of data to be shown as：The subframe 0 of the LTE radio frames, subframe 4 and subframe 5 and under Reference signal is received in subframe 0, subframe 4 and the subframe 5 of one radio frames.

Assume again that the predefined subframe in 5 effective subframes of above-mentioned main arrowband includes subframe 0, subframe 4 and subframe 5, terminal Equipment receives reference signal in all effective subframes of main arrowband in the predefined subframe subframe of continuous N, if above-mentioned M etc. Receiving reference signal in 6, in the predefined subframe of continuous N in above-mentioned all effective subframes can show as：In the LTE Ginseng is received in subframe 0, subframe 4 and the subframe 5 of radio frames and subframe 0, subframe 4 and the subframe 5 of next LTE radio frames Examine signal；Or, the terminal device continuous N in all effective subframes of main arrowband is specified and received in effective subframe with reference to letter Number, M is greater than 0 integer, wherein, this specifies effective subframe to be included in the predetermined foster son in all effective subframes of main arrowband Frame and the non-predetermined foster son's frame that there is publicly-owned data transfer, for example, it is assumed that subframe 1 (non-predetermined foster son frame) quilt effectively in subframe It is equal to 6 for publicly-owned data transfer and M, then receives and refer in the continuous N given sub-frame in above-mentioned all effective subframes Signal can be shown as：It is wireless in the subframe 0 of the LTE radio frames, subframe 1, subframe 4 and subframe 5 and next LTE Reference signal is received in the subframe 0 and subframe 1 of frame.

It should be noted that in the case where performing channel measurement or RRM measurements, it is above-mentioned that reference signal is received on main arrowband Scheme or embodiment can equally be well applied to receive reference signal on a non-master arrowband, simply in said one non-master arrowband Effective subframe can be different from effective subframe in main arrowband.

Assume again that there is publicly-owned data transfer in the subframe 0 of the first arrowband, exist in the subframe 4 and subframe 5 of the second arrowband Publicly-owned data transfer, there is publicly-owned data transfer in the subframe 9 of the 3rd arrowband, (one in above three arrowband is main arrowband Or non-master arrowband), there is the effective of publicly-owned data transfer in the terminal device continuous N in above-mentioned first, second, and third arrowband Reference signal is received in subframe, M is greater than 0 integer；For example, if above-mentioned M is equal to 6, terminal device above-mentioned first, Second and the 3rd receives reference signal in effective subframe that continuous 6 have publicly-owned data transfer in arrowband and can show as：At this In the range of LTE radio frames, the subframe 0 in the first arrowband, the subframe 4 in the second arrowband and subframe 5, in the 3rd arrowband Subframe 9, and in the range of next LTE radio frames, the subframe 0 in the first arrowband, the subframe 4 in the second arrowband Upper reception reference signal.

In one embodiment of the invention, it can determine what is received on the first running time-frequency resource according at least one of information Signal：Operator scheme, data type, covering grade；Wherein, operator scheme can be included with interior In-band operations, protection band Guard band are operated and independent Stand-alone operations, and narrowband type can include main arrowband and non-master arrowband, and data type can With including obtaining the data received before LTE CRS information and obtaining the data received after LTE CRS information.

It should be noted that above-mentioned covering grade can generally include normal covering, sane covering and extremely cover Three Estate, The set of the different iterative transfer times of different covering grade correspondences；The relatively small iterative transfer times of normal covering correspondence, and pole The relatively large iterative transfer times of end covering correspondence.

For example, when the operator scheme of system operates for In-band, being received before being to obtain LTE CRS information in the data of reception Data when, on the first running time-frequency resource only receive reference signal, reception data obtain LTE CRS information after receive During data, reference signal and LTE CRS are received simultaneously on the first running time-frequency resource；

Or, when the operator scheme of system operates for In-band, received before being to obtain LTE CRS information in the data of reception Data when, on the first running time-frequency resource only receive reference signal, reception data obtain LTE CRS information after receive During data, if the extreme covering of covering grade correspondence residing for terminal device, receives reference signal on the first running time-frequency resource simultaneously With LTE CRS, reference signal is otherwise only received on the first running time-frequency resource.Operated in the operator scheme of system for Guard band Or during Standalone operations, reference signal is only received on the first running time-frequency resource.

In one embodiment of the invention, it can determine what is received on the second running time-frequency resource according at least one of information Signal：Operator scheme, narrowband type；Wherein, operator scheme can be included with interior In-band operations, protection band Guard band Operation and independent Stand-alone operations, narrowband type can include main arrowband and non-master arrowband.

For example, when the operator scheme of system operates for In-band, receiving LTE CRS and ginseng simultaneously on the second running time-frequency resource Examine signal；Or, it is the running time-frequency resource of main arrowband in the second running time-frequency resource when the operator scheme of system operates for In-band When, reference signal and LTE CRS are received simultaneously on the second running time-frequency resource, when the second running time-frequency resource is a non-master arrowband During frequency resource, LTE CRS are only received on the second running time-frequency resource；System operator scheme for Guard band operate or When Standalone is operated, reference signal is only received on the second running time-frequency resource.

It should be noted that when the operator scheme of said system is operates with interior In-band, terminal device can be received for referring to Show the signaling of LTE CRS information：Wherein, the signaling includes at least one of：It is carried on the Master Information Block MIB in PBCH Signaling, the system information block SIB signalings being carried in PDSCH；LTE CRS information includes at least one of：Port number is believed Breath, sequence information, precoding matrix information, power information；

Above-mentioned sequence information includes at least one of：First element of the LTE CRS sequences that main arrowband is used is in maximum length The relatively main arrowband in the position of index, non-master arrowband in LTE system bandwidth in LTE CRS sequences is in LTE system bandwidth The biasing of position, LTE system bandwidth, main arrowband in LTE system bandwidth shared PRB index, non-master arrowband in LTE systems Shared PRB index in regiment commander is wide；

Wherein, maximum length LTE CRS sequences are the LTE CRS sequences that maximum LTE system bandwidth is used.

In one embodiment of the invention, LTE CRS being received on the first running time-frequency resource can include：When the end of reference signal Mouth number K₁Port number K less than or equal to LTE CRS₂When, LTE CRS can be received one of in such a way：Receive Numbering is 0 to K₁- 1 K₁The LTE CRS of individual port；It is 0 to K to receive numbering₂- 1 K₂The LTE CRS of individual port； Wherein, the K₁, K₂For positive integer.

It should be noted that above-mentioned K₁Can be 1 or 2, K₂Can be 1 or 2 or 4.

In one embodiment of the invention, LTE CRS can include on the second running time-frequency resource：Connect one of in such a way Receive LTE CRS：Receive the LTE CRS for 1 port that numbering is 0；It is 0 to K to receive numbering₂- 1 K₂The LTE of individual port CRS；Wherein K₂For LTE CRS port number and K₂For positive integer.It should be noted that K₂Can be 1 or 2 or 4.

It should be noted that in the case where system is FDD system, predefined subframe can include at least one of subframe： Numbering is 0,4,5 and 9 subframe；Further, primary/secondary synchronization is not present in the subframe that above-mentioned numbering is 0,4,5 and 9 The subframe of signal PSS/SSS transmission can be as above-mentioned predefined subframe, but is not limited to this；It is TDD in system In the case of system, predefined subframe can include at least one of subframe：Numbering is 0,1,5 and 6 subframe.Enter one The subframe that primary/secondary synchronizing signal PSS/SSS transmission is not present in step ground, the subframe that above-mentioned numbering is 0,1,5 and 6 can conduct Above-mentioned predefined subframe.Above-mentioned data include at least one of：Physical Broadcast Channel PBCH data are carried on, are carried on The data of physical downlink control channel PDCCH, are carried on Physical Downlink Shared Channel PDSCH data；Publicly-owned data include At least one of：PBCH data are carried on, PDSCH system information block SIB data are carried on；Wherein, it is above-mentioned SIB include system support all SIB types at least one, such as above-mentioned SIB include the first SIB types (SIB1), Or, the 2nd SIB types (SIB2) or, the first SIB types and the 2nd SIB types, or, all SIB types.

It should be noted that performance or precision in order to further enhance channel measurement or RRM measurements, the above method can also be wrapped Include：In the case where performing above-mentioned channel measurement or above-mentioned RRM measurements, connect on the running time-frequency resource for sending auxiliary synchronous signals SSS Receive auxiliary synchronous signals SSS.I.e. in the case where performing channel measurement or RRM measurements, terminal device is except in the second running time-frequency resource It is upper to receive beyond reference signal and/or LTE CRS, SSS can also be received on the running time-frequency resource for sending auxiliary synchronous signals SSS, To further enhance the performance or precision of channel measurement or RRM measurements.

Above-mentioned reference signal is the reference signal of single port or the reference signal of two-port, as shown in Figure 2 a and 2 b, for two The reference signal of port, it uses identical subcarrier with LTE cell special reference signals CRS on frequency domain, accounted in time domain With most latter two orthogonal frequency division multiplex OFDM symbol of each time slot in subframe, the pattern of the reference signal of single port and two ends The pattern of one of port in the pattern of the reference signal of mouth is identical.

For a better understanding of the present invention, the present invention is further explained below in conjunction with preferred embodiment.

Preferred embodiment one

In the present embodiment, for Anchor arrowbands, reference signal is sent in all effective subframes, it is narrow for non-Anchor Reference signal is sent in band, the subframe that there is NB-IoT data transfers in all effective subframes；When terminal device receives base station hair During the NB-IoT data sent (the first scene), ginseng is received on the running time-frequency resource (the first running time-frequency resource) for receiving NB-IoT data Examine signal；When terminal device performs channel or RRM measurements (the second scene), the continuous N in Anchor arrowbands (is more than 0 integer) reference signal is received on individual effective subframe (the second running time-frequency resource).

Contemplate the operator scheme of NB-IoT systems to operate for In-band, NB-IoT systems use in LTE system bandwidth range 4 Individual PRB (being used as 4 180kHz arrowband), and it is respectively designated as first, second, third and fourth PRB；Wherein, One PRB is used as Anchor arrowbands, at least for transmitting NB-PSS/SSS signals and NB-PBCH data.

Further, by taking FDD system as an example, it is contemplated that in the range of a LTE radio frames, subframe 2, subframe 3, subframe 7 The subframe 9 being arranged to subframe 8 in the MBMS transmission of LTE system and Anchor arrowbands is used for NB-PSS/SSS Transmission, now, for the first PRB (i.e. Anchor arrowbands), the subframe that can be used for transmitting NB-IoT data is (i.e. effective Subframe) include 5, it is embodied as：

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands), it can be used for transmitting the subframe of NB-IoT data (i.e. Effective subframe) include 6, it is embodied as：

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

Based on above-mentioned it is assumed that the transmission process of NB-IoT reference signals is as follows：

For the first PRB (i.e. Anchor arrowbands), in the range of a LTE radio frames,

It is independent on whether there is NB-IoT data transfers, in subframe 0, subframe 1, subframe 4, subframe 5 and subframe 6 (i.e. In all effective subframes) send reference signal；

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands),

Still by taking a LTE radio frames scope as an example, if all effective subframes in the range of the LTE radio frames are (i.e. above-mentioned Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6 and subframe 9) on, in the absence of any NB-IoT data transfers, then exist The LTE radio frames scope internal reference signals will not be sent；If the effective subframe (example in part in the range of the LTE radio frames Such as subframe 0, subframe 4, subframe 6 and subframe 9) on there is NB-IoT data transfers, then in subframe 0, subframe 4, subframe 6 Reference signal is sent with subframe 9；If all there is NB-IoT on all effective subframes (6) in the LTE radio frames Data transfer, then send reference signal in all effective subframes.

Wherein, in the present embodiment, for there is NB-IoT data transfers effective subframe, the NB-IoT data are to hold The data for being loaded in NB-PBCH or the data for being carried on NB-PDCCH or the data for being carried on NB-PDSCH.

Wherein, the reference signal is single port or two-port；By taking two-port reference signal as an example, for normal and extension CP classes Type, respectively as shown in Figure 2 a and 2 b, i.e., reference signal uses identical to reference signal pattern on frequency domain with LTE CRS Carrier wave, takes most latter two OFDM symbol of each time slot in subframe in time domain.For single port reference signal, reference Signal pattern is identical with the pattern of one of port in two-port reference signal pattern.

Wherein, when the operator scheme of NB-IoT systems is Guard band operations or Standalone operation, grasped with In-band Make different, due to not needing backward compatibility LTE system (such as the MBMS service transmission of backward compatibility LTE system), can use It can include the son that NB-PSS/SSS is transmitted is not present in all subframes in the subframe (i.e. effective subframe) of transmission NB-IoT data Frame；The subframe that NB-PSS/SSS transmission is not present in all subframes i.e. in a radio frames is all effective subframe.

Based on same with transmission process it is assumed that the reception process of NB-IoT reference signals is as follows：

Still by taking a LTE radio frames scope as an example, if base station is sent to terminal device in the range of the LTE radio frames NB-IoT data take all effective subframe (subframe 0, subframe 1, subframe 4, subframe 5, subframe 6 and the sons in the 3rd PRB Frame 9), then it is all effectively in above-mentioned 3rd PRB when terminal device receives the NB-IoT data of base station transmission (the first scene) NB-IoT data and reference signal are received simultaneously in subframe (receiving the running time-frequency resource of NB-IoT data, i.e. the first running time-frequency resource), Wherein, the reference signal is used to demodulate above-mentioned NB-IoT data；

As another example, if base station is sent to the NB-IoT data occupancy of terminal device in the range of the LTE radio frames The 2nd PRB subframe 0 and subframe 1 and take in the 4th PRB subframe 4, subframe 5, subframe 6 and subframe 9, then When terminal device receives the NB-IoT data that base station sends (the first scene), in the 2nd PRB subframe 0 and subframe 1, with And the subframe 4 in the 4th PRB, subframe 5, subframe 6 and subframe 9 (receiving the running time-frequency resource of data, i.e. the first running time-frequency resource) It is upper to receive NB-IoT data and reference signal simultaneously, wherein, the reference signal is used to demodulate above-mentioned NB-IoT data.

Contemplate terminal device to start to perform channel or RRM measurements, now, terminal device in a LTE radio frames initial time Reference signal is received in continuous N effectively subframe in the first PRB, M is greater than 0 integer；If for example, M etc. In 5, then terminal device is since the LTE radio frames initial times, and continuous 5 effective subframes in the first PRB (i.e. should Subframe 0, subframe 1, subframe 4, subframe 5 and the subframe 6 of LTE radio frames) on receive reference signal；As another example, If M is equal to 8, terminal device is since the LTE radio frames initial times, and continuous 8 in the first PRB are effectively sub Frame (the i.e. son of the subframe 0 of the LTE radio frames, subframe 1, subframe 4, subframe 5 and subframe 6 and next LTE radio frames Frame 0, subframe 1 and subframe 4) on receive reference signal；

Wherein, RRM measurements include RSRP measurements and RSRQ measurements.

Preferred embodiment two

In the present embodiment, for Anchor arrowbands, non-MBSFN sub-frame in all effective subframes and there is NB-IoT Reference signal is sent in the MBSFN sub-frame of data transfer, for non-Anchor arrowbands, the presence in all effective subframes Reference signal is sent in the subframe of NB-IoT data transfers；When terminal device receives the NB-IoT data of base station transmission (first Scene), receive reference signal on the running time-frequency resource (the first running time-frequency resource) for receiving data；When terminal device performs channel measurement Or during RRM measurements (the second scene), the continuous N (being more than 0 integer) in all effective subframes of Anchor arrowbands is individual non- MBSFN sub-frame, or, continuous N given sub-frame (given sub-frame bag in all effective subframes of Anchor arrowbands Include non-MBSFN sub-frame and there is the MBSFN sub-frame of publicly-owned NB-IoT data transfers) on receive reference signal.

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

For the first PRB (i.e. Anchor arrowbands), by taking a LTE radio frames scope as an example,

If the subframe 1 and subframe 6 in 5 effective subframes are configured as LTE system MBSFN sub-frame, independent of being It is no to there is NB-IoT data transfers, (the non-MBSFN i.e. in all effective subframes in subframe 0, subframe 4 and subframe 5 In subframe) reference signal is sent all the time；For subframe 1 or subframe 6, if there is NB-IoT data transfers, then in the subframe Upper transmission reference signal, if there is no NB-IoT data transfers, does not then send reference signal in the subframe.

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands),

Still by taking a LTE radio frames scope as an example, if base station is sent to terminal device in the range of the LTE radio frames NB-IoT data take all effective subframe (subframe 0, subframe 1, subframe 4, subframe 5, subframe 6 and the sons in the 3rd PRB Frame 9), then when terminal device receives the NB-IoT data of base station transmission (the first scene), in all effective subframes of the 3rd PRB NB-IoT data and reference signal are received simultaneously on (receiving the running time-frequency resource of NB-IoT data, i.e. the first running time-frequency resource), its In, the reference signal is used to demodulate above-mentioned NB-IoT data；

The subframe 1 and subframe 6 contemplated in effective subframe are configured as LTE system MBSFN sub-frame, and terminal device is one Individual LTE radio frames initial time starts to perform channel or RRM measurements；

Now, reference signal is received in the non-effective subframes of MBSFN of continuous N of the terminal device in the first PRB, M is More than 0 integer；For example, if M is equal to 5, terminal device is since the LTE radio frames initial times, in the first PRB In continuous 5 non-effective subframes of MBSFN (the i.e. subframe 0 of the LTE radio frames, subframe 4 and subframe 5 and next The subframe 0 and subframe 4 of LTE radio frames) on receive reference signal；Or, the terminal device continuous N in the first PRB Specify and receive reference signal in effective subframe, M is greater than 0 integer, wherein, this specifies effective subframe to be included in the first PRB All effective subframes in non-MBSFN sub-frame and there is the MBSFN sub-frames of publicly-owned NB-IoT data transfers；For example, such as Subframe 1 of the fruit effectively in subframe is used for publicly-owned NB-IoT data transfers and M is equal to 6, then terminal device from the LTE without Line frame initial time starts, and continuous 6 in the first PRB specify effective subframe (the i.e. subframe 0 of the LTE radio frames, sub The subframe 0 and subframe 1 of frame 1, subframe 4 and subframe 5 and next LTE radio frames) on receive reference signal；

Wherein, RRM measurements include RSRP measurements and RSRQ measurements.

Wherein, in the present embodiment, for there is one of publicly-owned NB-IoT data transfers effective subframe, the publicly-owned NB-IoT Data are the SIB data for being carried on NB-PBCH data or being carried on NB-PDSCH.

Preferred embodiment three

In the present embodiment, all it is the presence in all effective subframes for Anchor arrowbands and non-Anchor arrowbands Reference signal is sent in the subframe of NB-IoT data transfers；When terminal device receives the NB-IoT data of base station transmission (first Scene), receive reference signal on the running time-frequency resource (the first running time-frequency resource) for receiving NB-IoT data；When terminal device is performed When channel measurement or RRM measurements (the second scene), the continuous N in all effective subframes of Anchor arrowbands (is more than 0 Integer) receive reference signal in the individual subframe that there is publicly-owned NB-IoT data transfers.

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

If NB-IoT data transfers are not present in the subframe 1 and subframe 6 in above-mentioned 5 effective subframes, in subframe 0, son There is NB-IoT data transfers (including unicast and publicly-owned NB-IoT data) on frame 4 and subframe 5, then above-mentioned subframe 0, Reference signal is sent in subframe 4 and subframe 5.

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands),

Subframe 0, subframe 4 and subframe 5 of the imagination in the first PRB there is publicly-owned NB-IoT data transfers and terminal device exists One LTE radio frames initial time starts to perform channel or RRM measurements；

Now, continuous N of the terminal device in the first PRB exists and received in effective subframe of publicly-owned NB-IoT data transfers Reference signal, M is greater than 0 integer；For example, if M is equal to 5, terminal device is from the LTE radio frames initial times Start, continuous 5 in the first PRB there is publicly-owned NB-IoT data transfers effective subframe (i.e. LTE radio frames The subframe 0 and subframe 4 of subframe 0, subframe 4 and subframe 5 and next LTE radio frames) on receive reference signal；

Wherein, RRM measurements include RSRP measurements and RSRQ measurements.

Preferred embodiment four

In the present embodiment, for Anchor arrowbands, predefined subframe in all effective subframes and there is NB-IoT numbers Reference signal is sent in subframe according to the non-predetermined justice of transmission, for non-Anchor arrowbands, the presence in all effective subframes Reference signal is sent in the subframe of NB-IoT data transfers；When terminal device receives the NB-IoT data of base station transmission (first Scene), receive reference signal on the running time-frequency resource (the first running time-frequency resource) for receiving NB-IoT data；When terminal device is performed When channel measurement or RRM measurements (the second scene), the continuous N in all effective subframes in Anchor arrowbands is (whole more than 0 Number) individual predefined subframe, or, (this specifies son to the continuous N given sub-frame in all effective subframes in Anchor arrowbands Frame includes predefined subframe and there is the non-predetermined foster son frames of publicly-owned NB-IoT data transfers) on receive reference signal.

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

Contemplating predefined subframe in above-mentioned 5 effective subframes includes subframe 0, subframe 4 and subframe 5, then independent of It whether there is the transmission of NB-IoT data in subframe, reference signal sent all the time in above-mentioned subframe 0, subframe 4 and subframe 5； In addition, for a subframe in subframe 1 and subframe 6, if there is NB-IoT data transfers, then sending ginseng in the subframe Signal is examined, if there is no NB-IoT data transfers, then reference signal is not sent in the subframe.

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands),

The predefined subframe contemplated in above-mentioned 5 effective subframes in the first PRB includes subframe 0, subframe 4 and subframe 5 simultaneously And terminal device starts to perform channel or RRM measurements in a LTE radio frames initial time；Now, terminal device is first Reference signal is received in the predefined effective subframe of continuous N in PRB, M is greater than 0 integer；If for example, M Equal to 5, then terminal device is since the LTE radio frames initial times, and continuous 5 in the first PRB are predefined effective Subframe is (i.e. in the subframe 0 of the LTE radio frames, subframe 4 and subframe 5 and the subframe 0 and subframe of next LTE radio frames 4) reference signal is received on；Or, the terminal device continuous N in the first PRB is specified and received in effective subframe with reference to letter Number, M is greater than 0 integer, wherein, it is predefined in the first PRB all effective subframes that this specifies effective subframe to be included in Subframe and there is non-predetermined foster son's frames of publicly-owned NB-IoT data transfers；If for example, the subframe 1 effectively in subframe is used for Publicly-owned NB-IoT data transfers and M are equal to 6, then terminal device is since the LTE radio frames initial times, in the first PRB In continuous 6 specify effective subframe (i.e. in the subframe 0 of the LTE radio frames, subframe 1, subframe 4 and subframe 5 and next The subframe 0 and subframe 1 of individual LTE radio frames) on receive reference signal；

Wherein, RRM measurements include RSRP measurements and RSRQ measurements.

Preferred embodiment five

In the present embodiment, all it is the presence in all effective subframes for Anchor arrowbands and non-Anchor arrowbands Reference signal is sent in the subframe of NB-IoT data transfers；When terminal device receives the NB-IoT data of base station transmission (first Scene), receive reference signal on the running time-frequency resource (the first running time-frequency resource) for receiving NB-IoT data；When terminal device is performed When channel measurement or RRM measurements (the second scene), in all effective subframes of Anchor arrowbands and non-Anchor arrowbands Continuous N is present receives reference signal in the subframe (the second running time-frequency resource) of publicly-owned NB-IoT data transfers.

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

Contemplate and NB-IoT data transfers are not present in subframe 1 and subframe 6 in above-mentioned 5 effective subframes, in subframe 0, son There is NB-IoT data transfers (including unicast and publicly-owned NB-IoT data) on frame 4 and subframe 5, then above-mentioned subframe 0, Reference signal is sent in subframe 4 and subframe 5.

For second or the 3rd or the 4th PRB (i.e. non-Anchor arrowbands),

There is publicly-owned NB-IoT data transfers in imagination, (non-in the 2nd PRB in the subframe 0 of the first PRB (Anchor arrowbands) Anchor arrowbands) subframe 4 and subframe 5 on there is publicly-owned NB-IoT data transfers, in the 3rd PRB, (non-Anchor is narrow Band) subframe 9 on there is publicly-owned NB-IoT data transfers, in the 4th PRB (non-Anchor arrowbands) be not present it is publicly-owned NB-IoT data transfers；And terminal device starts to perform channel or RRM measurements in a LTE radio frames initial time；This When, there is having for publicly-owned NB-IoT data transfers in a terminal device continuous N in first, second, and third PRB is distributed in Reference signal is received in effect subframe, M is greater than 0 integer；If for example, M be equal to 6, terminal device from the LTE without Line frame initial time starts, and continuous 6 in first, second, and third PRB is distributed in have publicly-owned NB-IoT data and passed Defeated effective subframe (i.e. in the range of the LTE radio frames, the subframe 0 in the first PRB, the subframe 4 in the 2nd PRB With subframe 5, the subframe 9 in the 3rd PRB, and in the range of next LTE radio frames, the subframe in the first PRB 0th, the subframe 4 in the 2nd PRB) on receive reference signal；

Wherein, RRM measurements include but is not limited to RSRP measurements and RSRQ measurements.

Preferred embodiment six

In the present embodiment, all it is predefined in all effective subframes for Anchor arrowbands and non-Anchor arrowbands Subframe and exist and send reference signal on non-predetermined foster son's frames of NB-IoT data transfers；When terminal device receives what base station was sent During NB-IoT data (the first scene), received on the running time-frequency resource (the first running time-frequency resource) for receiving NB-IoT data with reference to letter Number；When terminal device performs channel measurement or RRM measurements (the second scene), in the non-all effective sons in Anchor arrowbands (given sub-frame includes predefined subframe and there is the non-of publicly-owned NB-IoT data transfers continuous N given sub-frame in frame Predefined subframe) on receive reference signal.

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6；

Subframe 0, subframe 1, subframe 4, subframe 5, subframe 6, subframe 9.

Further, it is contemplated that for Anchor arrowbands, the predefined subframe in above-mentioned 5 effective subframes include subframe 0, Subframe 4 and subframe 5, for non-Anchor arrowbands, the predefined subframe in above-mentioned 6 effective subframes include subframe 0, Subframe 4, subframe 5 and subframe 9.

For the first PRB (Anchor arrowbands), by taking a LTE radio frames scope as an example,

Independent of in subframe whether there is NB-IoT data transmission, predefined subframe (i.e. subframe 0, subframe 4, Subframe 5) on send reference signal all the time；In addition, for a subframe in subframe 1 and subframe 6, if there is NB-IoT Data transfer, then send reference signal in the subframe, if there is no NB-IoT data transfers, is not then sent in the subframe Reference signal.

For second, third or the 4th PRB (non-Anchor arrowbands), by taking a LTE radio frames scope as an example,

Independent of in subframe whether there is NB-IoT data transmission, predefined subframe (i.e. subframe 0, subframe 4, Subframe 5 and subframe 9) on send reference signal all the time；In addition, for a subframe in subframe 1 and subframe 6, if there is NB-IoT data transfers, then send reference signal in the subframe, if there is no NB-IoT data transfers, then in the subframe On do not send reference signal.

The predefined subframe contemplated in 6 effective subframes of above-mentioned non-Anchor arrowbands includes subframe 0, subframe 4, subframe 5 Start to perform channel or RRM measurements in a LTE radio frames initial time with subframe 9 and terminal device；

Now, continuous N of the terminal device in the 3rd PRB (non-Anchor arrowbands), which is specified, receives reference in effective subframe Signal, M is greater than 0 integer, wherein, it is predetermined in the 3rd PRB all effective subframes that this specifies effective subframe to be included in The subframe of justice and the non-predetermined foster son's frame that there is publicly-owned NB-IoT data transfers；If for example, subframe 1 effectively in subframe by with It is equal to 6 in publicly-owned NB-IoT data transfers and M, then terminal device is since the LTE radio frames initial times, the 3rd Continuous 6 in PRB specify effective subframe (the i.e. subframe 0 of the LTE radio frames, subframe 1, subframe 4, subframe 5 and subframe 9 and the subframe 0 of next LTE radio frames) on receive reference signal；

Wherein, in the present embodiment, for there is one of publicly-owned NB-IoT data transfers effective subframe, the publicly-owned NB-IoT Data are the system information block SIB data for being carried on NB-PBCH data or being carried on NB-PDSCH.

Preferred embodiment seven

In the present embodiment, when NB-IoT system operation modes are that In-band is operated, base station indicates LTE CRS by signaling Information, terminal device receives the signaling of above-mentioned instruction LTE CRS information；The signaling includes at least one of：It is carried on MIB signalings in NB-PBCH, the SIB signalings being carried in NB-PDSCH, wherein, the SIB is NB-IoT systems One in all SIB types supported；Wherein, the LTE CRS information includes at least one of：Port number information, sequence Column information, precoding matrix information, power information.

Wherein, sequence information includes：

Index of first element of the LTE CRS sequences that Anchor arrowbands are used in maximum length LTE CRS sequences and non- Biasing of position of the Anchor arrowbands in LTE system bandwidth with respect to position of the Anchor arrowbands in LTE system bandwidth.

Maximum 20MHz LTE system bandwidth includes 100 PRB, and the length of corresponding LTE CRS sequences is 200, its The LTE CRS sequences of its LTE system bandwidth are the sequences being made up of the central element of the LTE CRS sequences of length 200, For example 5MHz LTE systems bandwidth includes 25 PRB, and the length of corresponding LTE CRS sequences is 50, and the length is 50 LTE CRS sequences are the sequences being made up of 50, the center element of the LTE CRS sequences of length 200.

The system bandwidth of LTE based on 20MHz, if the LTE CRS sequences (length is 2) that Anchor arrowbands are used First element possible index in the LTE CRS sequences of length 200, including：

8,18,28,29,38,39,48,49,58,59,68,69,78,79,88,89,109,110,119,120,129,130,

139,140,149,150,159,160,169,170,180,190 (totally 32)；

In this case, to enable terminal device to obtain the LTE CRS sequences of Anchor arrowbands, 5 bits can be used Control overhead indicate Anchor arrowbands LTE CRS sequences first element in the LTE CRS sequences of length 200 Index.According to the position of the LTE CRS sequences of the Anchor arrowbands of acquisition and non-Anchor arrowbands in LTE system bandwidth With respect to the biasing of position of the Anchor arrowbands in LTE system bandwidth, the LTE CRS sequence energy that non-Anchor arrowbands are used Enough it is acquired.

Wherein, sequence information can also include：LTE system bandwidth and Anchor and non-Anchor arrowbands are in the LTE system PRB index is taken in bandwidth.Wherein, the LTE CRS sequences that Anchor arrowbands or non-Anchor arrowbands are used are depended on Anchor or non-Anchor arrowbands take PRB index in LTE system bandwidth, and terminal device exists according to Anchor arrowbands The LTE CRS sequences that PRB index indirect gain Anchor arrowbands are used are taken in LTE system bandwidth, according to non-Anchor Arrowband takes the LTE CRS sequences that the PRB non-Anchor arrowbands of index indirect gain are used in system bandwidth.

If contemplate under different LTE system bandwidth, PRB shared by Anchor arrowbands it is possible index as shown in Table 1 below, In this case, to enable terminal device to obtain PRB shared by LTE system bandwidth and Anchor arrowbands in the system bandwidth Interior index, the control overhead of 6 bits can be used and according to mode joint instructions LTE system bandwidth as shown in table 2 and Indexes of the PRB under the system bandwidth shared by Anchor arrowbands.Terminal device is narrow according to the system bandwidth and non-Anchor of acquisition Band shared PRB index in the LTE system bandwidth can obtain the LTE CRS sequences of non-Anchor arrowbands.

Table 1

Table 2

Wherein, power information includes one below：

The energy (EPRE, Energy Per Resource Element) of each LTE CRS resource unit, unit is dBm, Biasings of the LTE CRS EPRE with respect to NB-IoT reference signals EPRE.

Wherein, precoding matrix information is used to obtain pre-coding matrix, and the pre-coding matrix of acquisition is used for one below：

The LTE CRS of 4 ports are virtually turned into 2 ports, the LTE CRS of 4 ports are virtually turned into 1 port, by 2 ports LTE CRS virtually turn to 1 port.

In addition, in the present embodiment, after terminal device receives above-mentioned LTE CRS information, when terminal device receives base station hair When giving the NB-IoT data of the terminal device (the first scene), the terminal device is receiving the running time-frequency resource of the NB-IoT data On (the first running time-frequency resource), in addition to receiving NB-IoT reference signals, LTE CRS are also received；Now NB-IoT is referred to Signal and LTE CRS be used to demodulate the NB-IoT data that base station is sent to the terminal device simultaneously.

Wherein, when the port number of NB-IoT reference signals is 1 (port numbering is 0),

If LTE CRS port number is 1, the LTE CRS, wherein NB-IoT of single port (port numbering is 0) are received Reference signal port is identical antenna port with LTE CRS ports；

If LTE CRS port number is 2, the LTE CRS, wherein NB-IoT of single port (port numbering is 0) are received Reference signal port and LTE CRS port 0 are identical antenna port；Or, receiving two-port, (port numbering is 0 He 1) LTE CRS, wherein, above-mentioned port numbering is virtual in terminal device side for the LTE CRS of 0 and 1 two-port 1 port is turned to, 1 port and the NB-IoT reference signals port of the virtualization are identical antenna port；

If LTE CRS port number is 4, the LTE CRS, wherein NB-IoT of single port (port numbering is 0) are received Reference signal port and LTE CRS port 0 are identical antenna port；Or, receiving four ports, (numbering is 0,1,2 With LTE CRS 3), wherein, above-mentioned port numbering for 0,1,2 and 3 four ports LTE CRS in terminal device one Side is virtualized into 1 port, and 1 port and the NB-IoT reference signals port of the virtualization are same antenna port；

Wherein, when the port number of NB-IoT reference signals is 2 (port numbering is 0 and 1),

If LTE CRS port number is 1, LTE CRS are not received；

If LTE CRS port number is 2, the LTE CRS, wherein NB-IoT of two-port (numbering is 0 and 1) are received The port 0 of reference signal and LTE CRS port 0 are identical antenna port, and port 1 and LTE CRS port 1 For identical antenna port；

If LTE CRS port number is 4, the LTE CRS, wherein NB-IoT of two-port (numbering is 0 and 1) are received The port 0 of reference signal and LTE CRS port 0 are identical antenna port, and port 1 and LTE CRS port 1 For identical antenna port；Or, the LTE CRS of four ports (numbering is 0,1,2 and 3) are received, wherein, above-mentioned port The LTE CRS for four ports that numbering is 0,1,2 and 3 are virtualized into 2 ports in terminal device side, and (numbering is 0 He 1), the port 0 in the virtual port is the end in identical antenna port, the virtual port with NB-IoT reference signals port 0 Mouth 1 is identical antenna port with NB-IoT reference signals port 1.

Preferred embodiment eight

In addition, after terminal device receives above-mentioned LTE CRS information, when terminal device performs channel measurement or RRM measurements When (the second scene), the terminal device is except the individual effective subframe of the continuous N (be more than 0 integer) in Anchor arrowbands (the Two running time-frequency resources) on receive beyond reference signal, also receive LTE CRS in above-mentioned M effectively subframes；Now NB-IoT Reference signal and LTE CRS are used for channel measurement by the terminal device simultaneously or RRM is measured.

Wherein, when LTE CRS port number is 1 (port numbering is 0),

The single port LTE CRS signals that receiving port numbering is 0；

When LTE CRS port number is 2 (port numbering is 0 and 1),

The single port LTE CRS signals that receiving port numbering is 0, or, receiving port numbering is 0 and port numbering is 1 Two-port LTE CRS signals；

When LTE CRS port number is 4 (port numbering is 0,1,2 and 3),

The single port LTE CRS signals that receiving port numbering is 0, or, receiving port numbering is that 0, port numbering is 1, end The four port LTE CRS signals that mouth numbering is 2 and port numbering is 3.

Preferred embodiment nine

In the present embodiment, continuous L subframe or effective subframe use phase in Anchor arrowbands or a non-Anchor arrowband Same reference signal sequence, wherein L is the integer more than 1.

By taking Anchor arrowbands and a LTE radio frames as an example；

Assuming that continuous 2 subframes (L is equal to 2) use identical reference signal sequence, then in the range of the LTE radio frames, when When subframe 0 and subframe 1 have reference signal transmission, subframe 0 and subframe 1 use identical reference signal sequence, when subframe 2 When there is reference signal transmission with subframe 3, subframe 2 and subframe 3 use identical reference signal sequence, when subframe 4 and subframe 5 When there is reference signal transmission, subframe 4 and the use identical reference signal sequence of subframe 5, when subframe 6 and the presence ginseng of subframe 7 When examining signal transmission, subframe 6 and subframe 7 use identical reference signal sequence, when subframe 8 and subframe 9 have reference signal During transmission, subframe 8 and subframe 9 use identical reference signal sequence.

By taking Anchor arrowbands and a LTE radio frames as an example,

Assuming that effective subframe in the LTE radio frames includes 6, specifically include subframe 0, subframe 1, subframe 4, subframe 5, Subframe 6 and subframe 9, and assume that continuous 2 effective subframes (L is equal to 2) use identical reference signal sequence, then in the LTE In the range of radio frames, when subframe 0 and subframe 1 have reference signal transmission, subframe 0 and subframe 1 are using identical with reference to letter Number sequence, when subframe 4 and subframe 5 have reference signal transmission, subframe 4 and subframe 5 use identical reference signal sequence, When subframe 6 and subframe 9 have reference signal transmission, subframe 6 and subframe 9 use identical reference signal sequence.

Preferred embodiment ten

In the present embodiment, when the operator scheme of NB-IoT systems operates for In-band, in different narrow band (or PRB) Effective subframe with identical numbering use identical or different reference signal sequence；Wherein, effective son with identical numbering Frame uses different reference signal sequences, including：One effective subframe of one arrowband (Anchor or non-Anchor arrowbands) makes Reference signal sequence is equal to the corresponding LTE CRS sequences of the effective subframe.

Contemplate when the operator scheme of NB-IoT systems operates for In-band, NB-IoT systems use LTE system bandwidth range Interior 4 PRB (being used as 4 180kHz arrowband), and it is respectively designated as first, second, third and fourth PRB；Its In, the first PRB is used as Anchor arrowbands.

If effective subframe with identical numbering is used in above-mentioned 4 PRB (including Anchor and non-Anchor arrowbands) Identical reference signal sequence, then, can be according to following for an effective subframe in any of above-mentioned 4 PRB PRB Equation determines reference signal sequence r_l,ns(i)：

Wherein, above-mentioned reference signal sequence r_l,ns(i) the index that PRB is taken independent of arrowband；

Wherein N_ID ^cellRepresent Physical Cell Identifier (PCID), n_sTime slot index is represented, l represents that OFDM symbol is indexed, N_CP Dependent on CP types, value is 0 or 1, and c_initRepresent pseudo-random sequence c () initialization value.

If effective subframe with identical numbering is used in above-mentioned 4 PRB (including Anchor and non-Anchor arrowbands) Different reference signal sequences, then the reference signal sequence that an effective subframe in any of above-mentioned 4 PRB PRB is used Row are equal to the corresponding LTE CRS sequences of the effective subframe, that is to say, that one of reference signal is sent in effective subframe The corresponding reference signal sequence of OFDM symbol is equal to the corresponding LTE CRS sequences of the OFDM symbol in the subframe；For example Contemplate in above-mentioned 4 PRB in an a PRB effective subframe, reference signal take effective subframe it is interior each when Gap most latter two OFDM symbol, by taking normal CP as an example, as shown in Figure 2 a, the OFDM symbol for sending reference signal is all The 6th, the 7th, the 13rd and the 14th OFDM symbol in OFDM symbol, now, for the 6th OFDM Symbol, corresponding reference signal sequence is equal to the LTE CRS sequences corresponding to the 6th OFDM symbol, for the 7th OFDM symbol, corresponding reference signal sequence is equal to the LTE CRS sequences corresponding to the 7th OFDM symbol, for the 13 OFDM symbols, corresponding reference signal sequence is equal to the LTE CRS sequences corresponding to the 13rd OFDM symbol, For the 14th OFDM symbol, corresponding reference signal sequence is equal to the corresponding LTE CRS of the 14th OFDM symbol Sequence.

Through the above description of the embodiments, those skilled in the art can be understood that the side according to above-described embodiment Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases before Person is more preferably embodiment.Understood based on such, technical scheme substantially makes tribute to prior art in other words The part offered can be embodied in the form of software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD) in, including some instructions to cause a station terminal equipment (can be mobile phone, computer, Server, or the network equipment etc.) perform method described in each embodiment of the invention.

A kind of dispensing device of reference signal is additionally provided in the present embodiment, and the device is used to realize above-described embodiment and preferred real Mode is applied, repeating no more for explanation had been carried out.As used below, term " module " can realize predetermined function The combination of software and/or hardware.Although the device described by following examples is preferably realized with software, hardware, or The realization of the combination of software and hardware is also that may and be contemplated.

Fig. 4 is the structured flowchart of the dispensing device of reference signal according to embodiments of the present invention, as shown in figure 4, the device includes：

Acquisition module 42, for obtaining reference signal；

Sending module 44, is connected with above-mentioned acquisition module 42, for an arrowband in all arrowbands for being used for system, presses Reference signal is sent according to one below mode：Reference signal is sent in all effective subframes；Non- group in all effective subframes Broadcast Broadcast Single Frequency Network MBSFN sub-frame and exist and send reference signal in the MBSFN sub-frame of data transfer；All effective Reference signal is sent in the subframe of presence data transfer in subframe；Predefined subframe in all effective subframes and there are data Reference signal is sent on non-predetermined foster son's frame of transmission；Wherein, effective subframe is the subframe with Transmission system data capability.

It should be noted that said apparatus can include acquisition module 42 and sending module 44, sending module can also be only included 44, however it is not limited to this.Said apparatus can apply to base station, but be not limited to this.

By way of said apparatus is there is provided transmission of reference signals, i.e., the mode there is provided transmission NB-RS solves correlation In technology in the case where NB-IoT systems use multiple arrowbands simultaneously, the problem of how transmitting NB-RS.Meanwhile, by upper The mode of stating transmits NB-RS and avoids reference signal always to be sent in all subframes, and then is avoided with interior In-band operations Interference of the NB-IoT systems to LTE system under pattern, equally solves how to reduce under with interior In-band operator schemes The problem of NB-IoT systems are to the interference of LTE system.

It should be noted that may refer to implement shown in Fig. 1 for the explanation of specific sending method and term in the dispensing device Specific explanations in example, here is omitted.

A kind of reception device of reference signal is additionally provided in the present embodiment, and Fig. 5 is reference signal according to embodiments of the present invention Reception device structured flowchart, as shown in figure 5, said apparatus can include：

First receiving module 52, in the case of received data, receiving reference signal on the first running time-frequency resource, or, Reference signal and Long Term Evolution LTE cell special reference signals CRS are received on the first running time-frequency resource；Wherein, the first time-frequency is provided Source is the running time-frequency resource of the data occupancy received；

Second receiving module 54, in the case where performing channel measurement or radio frequency resource management RRM measurements, at second At least one of is received in frequency resource：Reference signal, LTE CRS；Wherein, the second running time-frequency resource is one below：Positioned at master M subframe in arrowband or non-master arrowband, the M subframe in X different narrow band；Wherein, M be greater than 0 it is whole Number, X is greater than 1 integer；

Parsing module 56, is connected with above-mentioned first receiving module 52 and/or above-mentioned second receiving module 54, is received for utilizing Above-mentioned reference signal and/or the data that receive of LTE CRS demodulation, or carry out channel measurement or RRM measurements.

By said apparatus, in different situations, using the different receiving modules in the device, come receive reference signal and/or LTE CRS, thus solve in correlation technique in NB-IoT systems while using in the case of multiple arrowbands, how to transmit The problem of NB-RS.It should be noted that the above-mentioned receiving module 54 of first receiving module 52 and second can have a processor Complete, can also be completed respectively by a processor, but not limited to this.Said apparatus can not include above-mentioned parsing module 56 Technical problem can be solved, said apparatus can be located in terminal, but not limited to this.

It should be noted that may refer to implement shown in Fig. 3 for the specific explanation for receiving mode and term in the reception device Specific explanations in example, here is omitted.

According to an aspect of the invention, there is provided a kind of Transmission system of reference signal, said system can include：Including upper State the terminal of the base station of the dispensing device of embodiment illustrated in fig. 4 and the reception device of embodiment illustrated in fig. 5.

It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, can by with Under type is realized, but not limited to this：Above-mentioned modules are respectively positioned in same processor；Or, above-mentioned modules distinguish position In multiple processors.

Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be by It is set to the program code that storage is used to perform following steps：

An arrowband in S1, all arrowbands used for system, reference signal is sent according to one below mode：All Reference signal is sent in effective subframe；Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and there are data Reference signal is sent in the MBSFN sub-frame of transmission；Reference is sent in the subframe of presence data transfer in all effective subframes Signal；Predefined subframe in all effective subframes and exist and send reference signal on non-predetermined foster son's frame of data transfer；Its In, effective subframe is the subframe with transmission NB-IoT data capabilities.

Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or Person's CD etc. is various can be with the medium of store program codes.

Alternatively, the specific example in the present embodiment may be referred to the example described in above-described embodiment and optional embodiment, The present embodiment will not be repeated here.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can use general calculating Device realizes that they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted, Alternatively, they can be realized with the executable program code of computing device, it is thus possible to be stored in storage device In performed by computing device, and in some cases, can be to perform shown or described step different from order herein Suddenly, they are either fabricated to each integrated circuit modules respectively or be fabricated to the multiple modules or step in them single Integrated circuit modules are realized.So, the present invention is not restricted to any specific hardware and software combination.

The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art For, the present invention can have various modifications and variations.Any modification within the spirit and principles of the invention, being made, etc. With replacement, improvement etc., it should be included in the scope of the protection.

Claims

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

An arrowband in all arrowbands used for system, reference signal is sent according to one below mode：

The reference signal is sent in all effective subframes；

Non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes and MBSFN that there is data transfer The reference signal is sent on frame；

The reference signal is sent in the subframe of presence data transfer in all effective subframes；

Predefined subframe in all effective subframes and exist and send described with reference to letter on non-predetermined foster son's frame of data transfer Number；

Wherein, effective subframe is with the subframe for transmitting the system data ability.

2. according to the method described in claim 1, it is characterised in that an arrowband in all arrowbands for main arrowband or Non-master arrowband；Wherein, the main arrowband is wide for transmitting master sync signal PSS and auxiliary synchronous signals SSS and physics Broadcast the arrowband of channel PBCH data.

3. according to the method described in claim 1, it is characterised in that in the case where the system is FDD system, The predefined subframe includes at least one of subframe：Numbering is 0,4,5 and 9 subframe；When the system is In the case of dividing duplexed TDD system, the predefined subframe includes at least one of subframe：Numbering is 0,1,5 and 6 subframe.

4. according to the method described in claim 1, it is characterised in that the data include at least one of：

Physical Broadcast Channel PBCH data are carried on, the data of physical downlink control channel PDCCH is carried on, holds It is loaded in Physical Downlink Shared Channel PDSCH data.

5. according to the method described in claim 1, it is characterised in that

The reference signal is the reference signal of single port or the reference signal of two-port.

6. method according to claim 2, it is characterised in that

For the main arrowband and the non-master arrowband, the reference signal is sent according to mode described in identical.

7. method according to claim 2, it is characterised in that for the main arrowband and the non-master arrowband, according to difference The mode send the reference signal, wherein,

When the main arrowband by all effective subframes send reference signal in the way of, or, according to it is all effectively Non-MBSFN sub-frame in subframe and existing sends reference signal mode in the MBSFN sub-frame of data transfer sends described During reference signal, the non-master arrowband sends the reference signal one of in such a way：In all effective subframes Exist and reference signal is sent in the subframe of data transfer, predefined subframe in all effective subframes and there is data transfer Non-predetermined foster son's frame on send reference signal；

When the main arrowband is according to the predefined subframe in all effective subframes and there is non-predetermined foster son's frame of data transfer When the upper mode for sending reference signal sends reference signal, the non-master arrowband is according to the presence number in all effective subframes Reference signal is sent according to the mode that reference signal is sent in the subframe of transmission.

8. method according to any one of claim 1 to 7, it is characterised in that

When the operator scheme of the system is operates with interior In-band, Long Term Evolution is indicated by least one following signaling LTE cell special reference signal CRS information：It is carried on Master Information Block MIB signalings in PBCH, is carried on PDSCH Middle system information block SIB signalings；Wherein, the LTE CRS information includes at least one of：Port number information, sequence Column information, precoding matrix information, power information.

9. method according to claim 8, it is characterised in that the sequence information includes at least one of：

It is first element of the LTE CRS sequences that main arrowband is used indexing in maximum length LTE CRS sequences, non- The biasing of position of the relatively described main arrowband in position of the main arrowband in LTE system bandwidth in the LTE system bandwidth, The LTE system bandwidth, the main arrowband the indexing of shared PRB, the non-master arrowband in the LTE system bandwidth The shared PRB index in the LTE system bandwidth；Wherein, the maximum length LTE CRS sequences are maximum LTE The LTE CRS sequences that system bandwidth is used.

10. according to the method described in claim 1, it is characterised in that for an arrowband in all arrowbands, continuous L Individual subframe or effective subframe use identical reference signal sequence, and wherein L is the integer more than 1.

11. according to the method described in claim 1, it is characterised in that when the operator scheme of the system operates for In-band, institute Effective subframe of the identical numbering in different narrow band in all arrowbands that the system of stating is used uses identical or different reference to believe Number sequence；Wherein, it is described to be included using different reference signal sequences：What an effective subframe in one arrowband was used Reference signal sequence is equal to the corresponding LTE CRS sequences of the effective subframe.

12. according to the method described in claim 1, it is characterised in that in the operator scheme of the system be protection band Guard band Operation or independent Stand-alone operation when, effective subframe include all subframes in be not present master sync signal PSS and/ Or the subframe of auxiliary synchronous signals SSS transmission.

13. a kind of method of reseptance of reference signal, it is characterised in that including：

In the case of received data, reference signal is received on the first running time-frequency resource, or, in first time-frequency money The reference signal and Long Term Evolution LTE cell special reference signals CRS are received on source；Wherein, the first time-frequency money Source is the running time-frequency resource of the data occupancy received；

In the case where performing channel measurement or radio frequency resource management RRM measurements, receive following on the second running time-frequency resource At least one：The reference signal, the LTE CRS；Wherein, second running time-frequency resource is one below：It is located at M subframe in main arrowband or non-master arrowband, the M subframe in X different narrow band；Wherein, the M is Integer more than 0, the X is greater than 1 integer.

14. method according to claim 13, it is characterised in that the main arrowband is that the master in all arrowbands that system is used is narrow Band, the non-master arrowband is a non-master arrowband in all arrowbands that system is used, and the X different narrow band is system X different narrow band in all arrowbands used；The main arrowband is for transmitting master sync signal PSS and auxiliary synchronous letter Number SSS and Physical Broadcast Channel PBCH data arrowband.

15. method according to claim 13, it is characterised in that the M subframe includes one below：

Continuous N effectively subframe；

Continuous N non-multicast Broadcast Single Frequency Network MBSFN sub-frame in all effective subframes；

There is the subframe of publicly-owned data transfer in the continuous N in all effective subframes；

The predefined subframe of continuous N in all effective subframes；

Continuous N given sub-frame in all effective subframes；Wherein, the given sub-frame includes one below：It is described non- MBSFN sub-frame and the MBSFN sub-frame that there is publicly-owned data transfer；The predefined subframe and there is publicly-owned data transfer Non-predetermined foster son's frame；The non-MBSFN sub-frame, the MBSFN that there is the unicast data transmission for being sent to terminal device Subframe and the MBSFN sub-frame that there is publicly-owned data transfer；The predefined subframe, exist and be sent to terminal device The non-predetermined foster son frame of unicast data transmission and the non-predetermined foster son's frame that there is publicly-owned data transfer；

Wherein, effective subframe is the subframe with Transmission system data capability.

16. method according to claim 13, it is characterised in that

The signal for determining to receive on first running time-frequency resource according at least one of information：

Operator scheme, covering grade, data type；

The signal for determining to receive on second running time-frequency resource according at least one of information：

Operator scheme, narrowband type；

Wherein, the operator scheme is included with interior In-band operations, protection band Guard band operations and independent Stand- Alone is operated；The narrowband type includes main arrowband and non-master arrowband；The data type includes obtaining LTE CRS letters The data received after the data and the acquisition LTE CRS information that are received before breath.

17. method according to claim 14, it is characterised in that

When the operator scheme of the system operates for In-band, the signaling for indicating LTE CRS information is received：Its In, the signaling includes at least one of：It is carried on Master Information Block MIB signalings in PBCH, is carried on PDSCH In system information block SIB signalings；The LTE CRS information includes at least one of：Port number information, sequence letter Breath, precoding matrix information, power information.

18. method according to claim 17, it is characterised in that the sequence information includes at least one of：

19. method according to claim 13, it is characterised in that the LTE CRS are received on first running time-frequency resource Including：

As the port number K of the reference signal₁Less than or equal to the port number K of the LTE CRS₂When, according to following One of mode receives the LTE CRS：It is 0 to K to receive numbering₁- 1 K₁The LTE CRS of individual port；Receive Numbering is 0 to K₂- 1 K₂The LTE CRS of individual port；

Wherein, the K₁, K₂For positive integer.

20. method according to claim 13, it is characterised in that the LTE CRS are received on second running time-frequency resource Including：

The LTE CRS are received one of in such a way：Receive the LTE CRS for 1 port that numbering is 0； It is 0 to K to receive numbering₂- 1 K₂The LTE CRS of individual port；Wherein, the K₂For the end of the LTE CRS Mouth number, the K₂For positive integer.

21. method according to claim 15, it is characterised in that in the case where the system is FDD system, The predefined subframe includes at least one of subframe：Numbering is 0,4,5 and 9 subframe；When the system is In the case of dividing duplexed TDD system, the predefined subframe includes at least one of subframe：Numbering is 0,1,5 and 6 subframe.

22. method according to claim 15, it is characterised in that

The data include at least one of：Physical Broadcast Channel PBCH data are carried on, physical down is carried on Control channel PDCCH data, are carried on Physical Downlink Shared Channel PDSCH data；

The publicly-owned data include at least one of：Physical Broadcast Channel PBCH data are carried on, physics is carried on DSCH Downlink Shared Channel PDSCH system information block SIB data.

23. method according to claim 13, it is characterised in that

24. method according to claim 13, it is characterised in that methods described also includes：

In the case where performing the channel measurement or RRM measurements, auxiliary synchronous signals SSS time-frequency money is being sent Auxiliary synchronous signals SSS is received on source.

25. a kind of dispensing device of reference signal, applied to base station, it is characterised in that including：

Sending module, for an arrowband in all arrowbands for being used for system, sends out according to one below mode Send reference signal：The reference signal is sent in all effective subframes；Non-multicast broadcast in all effective subframes is single Frequency network MBSFN sub-frame and exist and send the reference signal in the MBSFN sub-frame of data transfer；All effective The reference signal is sent in the subframe of presence data transfer in subframe；Predefined subframe in all effective subframes and Exist and send the reference signal on non-predetermined foster son's frame of data transfer；Wherein, effective subframe is with transmission institute State the subframe of system data ability.

26. a kind of reception device of reference signal, applied to terminal, it is characterised in that including：

First receiving module, in the case of received data, receiving reference signal on the first running time-frequency resource, or, The reference signal and Long Term Evolution LTE cell special reference signals CRS are received on first running time-frequency resource；Its In, first running time-frequency resource is the running time-frequency resource of the data occupancy received；

Second receiving module, in the case where performing channel measurement or radio frequency resource management RRM measurements, at second At least one of is received in frequency resource：The reference signal, the LTE CRS；Wherein, second running time-frequency resource For one below：M subframe in main arrowband or non-master arrowband, the M subframe in X different narrow band； Wherein, the M is greater than 0 integer, and the X is greater than 1 integer.

27. a kind of Transmission system of reference signal, including：Base station including claim 25 described device and including claim 26 The terminal of described device.