CN106911612A - The sending method and device of information - Google Patents

The sending method and device of information Download PDF

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Publication number
CN106911612A
CN106911612A CN201510976981.8A CN201510976981A CN106911612A CN 106911612 A CN106911612 A CN 106911612A CN 201510976981 A CN201510976981 A CN 201510976981A CN 106911612 A CN106911612 A CN 106911612A
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China
Prior art keywords
modulation symbol
symbol
modulation
resource
ofdm
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CN201510976981.8A
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Chinese (zh)
Inventor
夏树强
张雯
梁春丽
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ZTE Corp
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ZTE Corp
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Priority to CN201510976981.8A priority Critical patent/CN106911612A/en
Priority to PCT/CN2016/106423 priority patent/WO2017107712A1/en
Publication of CN106911612A publication Critical patent/CN106911612A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

The invention provides the sending method and device of a kind of information, wherein, the method includes：The modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal, the unreasonable problem of design of the reference signal for being applied to NB-LTE systems is solved, the NB-LTE stabilities of a system are improve.

Description

The sending method and device of information
Technical field
The present invention relates to the communications field, in particular to the sending method and device of a kind of information.
Background technology
Machine type communication (Machine Type Communication, referred to as MTC) user terminal (User Equipment, referred to as UE), also known as machine to machine (Machine to Machine, referred to as M2M) user communication device is the main application form of current Internet of Things.In third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) disclose several suitable for honeycomb level Internet of Things (Comb-Internet Of Things in technical report TR45.820V200, referred to as C-IOT) technology, wherein, arrowband Long Term Evolution (Narrow Bang-Long Term Evolution, referred to as NB-LTE) technology is the most noticeable.The system bandwidth of the system is 200kHz, with global mobile communication (Global system for Mobile Communication, referred to as GSM) gsm system channel width it is identical, this is NB-LTE system reuse GSM frequency spectrums and reduces adjacent to bringing great convenience with interfering for GSM channels.The transmitted bandwidth of NB-LTE is respectively 180kHz and 15kHz with downstream link sub-carrier interval, respectively with Long Term Evolution (Long-Term Evolution, referred to as LTE) one Physical Resource Block of system (Physical Resource Block, referred to as PRB) bandwidth it is identical with subcarrier spacing.
For this narrowband systems, 6 master sync signals of PRB of occupancy (Primary Synchronization Signal in correlation technique in LTE, referred to as PSS)/auxiliary synchronous signals (Secondary Synchronization Signal, referred to as SSS)/Physical Broadcast Channel (Physical Broadcast Chanel, referred to as PBCH) design no longer be applicable, it is necessary to redesign PSS/SSS/PBCH.
In for correlation technique, the unreasonable problem of design of the reference signal of NB-LTE systems is applied to, there is presently no efficiently solving scheme.
The content of the invention
The invention provides the sending method and device of a kind of information, at least to solve the unreasonable problem of design of the reference signal for being applied to NB-LTE systems in correlation technique.
According to an aspect of the invention, there is provided a kind of sending method of information, including：
The modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
Further, the position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined position.
Further, the OFDM symbol cyclic prefix CP in the case of routine CP, the index of the OFDM symbol comprising reference signal is from gathering { 0, Isosorbide-5-Nitrae } in value, the index of the OFDM symbol not comprising reference signal is from set { 2,3,5,6 } value in；
In the case where the CP of the OFDM symbol is for extension CP, the index of the OFDM symbol comprising reference signal from set { 0, 1, 3 } value in, the index of the OFDM symbol not comprising reference signal from set { 2, 4, 5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot is from set { 0, 1, 2, 3, 4, 5, 6 } value in, in the case where CP is extended, OFDM symbol in LTE system index in one time slot is from set { 0, 1, 2, 3, 4, 5 } value in.
Further, the number of the modulation symbol being mapped in the first resource set is not more than the number of the modulation symbol being mapped in the Secondary resource set.
Further, the modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the reference modulation symbol of the modulation symbol is the modulation symbol being mapped in the Secondary resource set.
Further, when the reference modulation symbol of multiple modulation symbols is same modulation symbol, at least one modulation symbol is the modulation symbol for being mapped in RE in the first resource set in the multiple modulation symbol.
Further, before the differential modulation, information is encoded and rate-matched.
Further, the reference modulation symbol of the modulation symbol is the modulation symbol mapped in a resource nearest apart from the resource of modulation symbol mapping, wherein, one modulation symbol is the modulation symbol being mapped in the Secondary resource set, or, the reference modulation symbol of the modulation symbol is one of multiple modulation symbols of mapping in multiple resources nearest apart from the resource of modulation symbol mapping, wherein, the modulation symbol in the multiple modulation symbol is the modulation symbol being mapped in the Secondary resource set.
Further, described information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
According to an aspect of the invention, there is provided a kind of method of reseptance of information, including：
The modulation symbol is received on resource collection corresponding with the modulation symbol of receive information, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
Further, the position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined position.
Further, the OFDM symbol cyclic prefix CP in the case of routine CP, the index of the OFDM symbol comprising reference signal is from gathering { 0, Isosorbide-5-Nitrae } in value, the index of the OFDM symbol not comprising reference signal is from set { 2,3,5,6 } value in；
In the case where the CP of the OFDM symbol is for extension CP, the index of the OFDM symbol comprising reference signal from set { 0, 1, 3 } value in, the index of the OFDM symbol not comprising reference signal from set { 2, 4, 5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot is from set { 0, 1, 2, 3, 4, 5, 6 } value in, in the case where CP is extended, OFDM symbol in LTE system index in one time slot is from set { 0, 1, 2, 3, 4, 5 } value in.
Further, the number of the modulation symbol being mapped in the first resource set is not more than the number of the modulation symbol being mapped in the Secondary resource set.
Further, the modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the reference modulation symbol of the modulation symbol is the modulation symbol being mapped in the Secondary resource set.
Further, when the reference modulation symbol of multiple modulation symbols is same modulation symbol, at least one modulation symbol is the modulation symbol for being mapped in RE in the first resource set in the multiple modulation symbol.
Further, before the differential modulation, information is encoded and rate-matched.
Further, the reference modulation symbol of the modulation symbol is the modulation symbol mapped in a resource nearest apart from the resource of modulation symbol mapping, wherein, one modulation symbol is the modulation symbol being mapped in the Secondary resource set, or, the reference modulation symbol of the modulation symbol is one of multiple modulation symbols of mapping in multiple resources nearest apart from the resource of modulation symbol mapping, wherein, the modulation symbol in the multiple modulation symbol is the modulation symbol being mapped in the Secondary resource set.
Further, described information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
According to another aspect of the present invention, there is provided a kind of dispensing device of information, including：
Sending module, for sending the modulation symbol on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
According to another aspect of the present invention, a kind of reception device of information is additionally provided, including：
Receiver module, for receiving the modulation symbol on resource collection corresponding with the modulation symbol of receive information, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
By the present invention, the modulation symbol is sent in resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal, the unreasonable problem of design of the reference signal for being applied to NB-LTE systems is solved, the NB-LTE stabilities of a system are improve.
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, and schematic description and description of the invention is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the sending method of information according to embodiments of the present invention；
Fig. 2 is a kind of flow chart of the method for reseptance of information according to embodiments of the present invention；
Fig. 3 is a kind of structured flowchart of the dispensing device of information according to embodiments of the present invention；
Fig. 4 is a kind of structured flowchart of the reception device of information according to embodiments of the present invention；
Fig. 5 is the mapping graph of the reference modulation symbol provided according to the preferred embodiment of the present invention one；
Fig. 6 is the schematic diagram that the RE provided according to the preferred embodiment of the present invention one refers to modulation symbol；
Fig. 7 is that the RE reference symbols on the CRS symbols provided according to the preferred embodiment of the present invention two map schematic diagram；
Fig. 8 is that the adjacent R E of the RE provided according to the preferred embodiment of the present invention two refers to modulation symbol schematic diagram.
Specific 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 for distinguishing similar object, without for describing specific order or precedence.
A kind of sending method of information is provided in the present embodiment, and Fig. 1 is a kind of flow chart of the sending method of information according to embodiments of the present invention, as shown in figure 1, the flow comprises the following steps：
Step S102, modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal；
Step S104, the modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection.
By above-mentioned steps, the modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal, the unreasonable problem of design of the reference signal for being applied to NB-LTE systems is solved, the NB-LTE stabilities of a system are improve.
In the present embodiment, the position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined position.
In the present embodiment, the OFDM symbol cyclic prefix CP in the case of routine CP, should include reference signal OFDM symbol index from gathering { 0, Isosorbide-5-Nitrae } in value, should not include reference signal OFDM symbol index from set { 2,3,5,6 } value in；
In the index that the CP of the OFDM symbol is the OFDM symbol that reference signal should be included in the case of extending CP from set { 0,1,3 } value in, should not include reference signal OFDM symbol index from set { 2,4,5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot is from set { 0,1,2,3,4,5,6 } value in, in the case where CP is extended, OFDM symbol in LTE system index in one time slot is from set { 0,1,2,3,4,5 } value in.
In the present embodiment, the number of the modulation symbol being mapped in the first resource set is not more than the number of the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, the modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the reference modulation symbol of the modulation symbol is the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, when the reference modulation symbol of multiple modulation symbols is same modulation symbol, at least one modulation symbol is the modulation symbol for being mapped in RE in the first resource set in the plurality of modulation symbol.
In the present embodiment, before the differential modulation, information is encoded and rate-matched.
In the present embodiment, the reference modulation symbol of the modulation symbol is the modulation symbol mapped in a resource nearest apart from the resource of modulation symbol mapping, wherein, one modulation symbol is the modulation symbol being mapped in the Secondary resource set, or, the reference modulation symbol of the modulation symbol is one of multiple modulation symbols of mapping in multiple resources nearest apart from the resource of modulation symbol mapping, wherein, the modulation symbol in the plurality of modulation symbol is the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, the information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
A kind of method of reseptance of information is additionally provided in the present embodiment, Fig. 2 is a kind of flow chart of the method for reseptance of information according to embodiments of the present invention, as shown in Fig. 2 the flow comprises the following steps：
Step S202, modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal；
Step S204, the modulation symbol is received on the corresponding resource collection of the modulation symbol with receive information, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection.
By above-mentioned steps, the modulation symbol is received on resource collection corresponding with the modulation symbol of receive information, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal, the unreasonable problem of design of the reference signal for being applied to NB-LTE systems is solved, the NB-LTE stabilities of a system are improve.
In the present embodiment, the position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined position.
In the present embodiment, the OFDM symbol cyclic prefix CP in the case of routine CP, should include reference signal OFDM symbol index from gathering { 0, Isosorbide-5-Nitrae } in value, should not include reference signal OFDM symbol index from set { 2,3,5,6 } value in；
In the index that the CP of the OFDM symbol is the OFDM symbol that reference signal should be included in the case of extending CP from set { 0,1,3 } value in, should not include reference signal OFDM symbol index from set { 2,4,5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot is from set { 0,1,2,3,4,5,6 } value in, in the case where CP is extended, OFDM symbol in LTE system index in one time slot is from set { 0,1,2,3,4,5 } value in.
In the present embodiment, the number of the modulation symbol being mapped in the first resource set is not more than the number of the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, the modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the reference modulation symbol of the modulation symbol is the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, when the reference modulation symbol of multiple modulation symbols is same modulation symbol, at least one modulation symbol is the modulation symbol for being mapped in RE in the first resource set in the plurality of modulation symbol.
In the present embodiment, before the differential modulation, information is encoded and rate-matched.
In the present embodiment, the reference modulation symbol of the modulation symbol is the modulation symbol mapped in a resource nearest apart from the resource of modulation symbol mapping, wherein, one modulation symbol is the modulation symbol being mapped in the Secondary resource set, or, the reference modulation symbol of the modulation symbol is one of multiple modulation symbols of mapping in multiple resources nearest apart from the resource of modulation symbol mapping, wherein, the modulation symbol in the plurality of modulation symbol is the modulation symbol being mapped in the Secondary resource set.
In the present embodiment, the information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
A kind of dispensing device of information is additionally provided in the present embodiment, and the device is used to realize above-described embodiment and preferred embodiment, has carried out repeating no more for explanation.As used below, term " module " can realize the combination of the software and/or hardware of predetermined function.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. 3 is a kind of structured flowchart of the dispensing device of information according to embodiments of the present invention, as shown in figure 3, the device includes：
First mapping block 32, for modulation symbol being mapped in into first resource set according to predetermined manner and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal；
Sending module 34, is connected with the first mapping block 32, for sending the modulation symbol in resource collection corresponding with the modulation symbol of the information of transmission.
Fig. 4 is a kind of structured flowchart of the reception device of information according to embodiments of the present invention, as shown in figure 4, the device includes：
Second mapping block 42, for the modulation symbol being mapped in into first resource set according to predetermined manner and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal；
Receiver module 44, is connected with the second mapping block 42, for receiving the modulation symbol in resource collection corresponding with the modulation symbol of receive information, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, can be accomplished by the following way, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located in multiple processors respectively.
It is described in detail with reference to the preferred embodiment of the present invention.
Preferred embodiment one
The preferred embodiments of the present invention provide a kind of transmission method of information.
The information of transmission can be synchronizing information, or be main system information block (Master Information Block, referred to as MIB), or system information block (System Information Block, referred to as SIB), or Downlink Control Information, or downlink data.Downlink Control Information is transmitted on down control channel, down control channel includes being not limited to Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH), enhancing Physical Downlink Control Channel (EnhancedPhysical Downlink Control Channel, referred to as EPDCCH), downlink data is transmitted on Physical Downlink Shared Channel (Physical Downlink Shared Channel, referred to as PDSCH).
The information of transmission uses differential modulation, for synchronizing signal, can be demodulated without necessarily referring to signal using differential modulation.And the decoding performance performance more related than sequence is good.For MIB/SIB, in NB-LTE systems, user equipment (UserEquipment, referred to as UE) position of the possible None- identified arrowband in system bandwidth, the proprietary pilot tone of existing cell (Cell-specific RS cannot be used, referred to as CRS) demodulation of MIB/SIB is carried out, it is relatively good solution using differential modulation.For Downlink Control Information or downlink data, in NB-LTE systems, if with interior inband scenes, if UE there is no the value of CRS sequences, so Downlink Control Information or downlink data can also be transmitted using difference, and differential transfer can just be demodulated without necessarily referring to signal.
In differential modulation, come configured information, in the present invention, modulation symbol B is referred to as the reference modulated signal of modulation symbol A to the change using a modulation symbol A with respect to another modulation symbol B.Such as assume that with reference to modulation symbol B be an, then if A is equal to an, it indicates that binary system bit " 1 "；If A is equal to-an, it indicates that in the present invention, each modulation symbol only one of which refers to modulation symbol to binary system bit " 0 ", but the reference symbol of multiple modulation symbols can be with identical.
The modulation symbol for sending the information is divided into two set, it is respectively mapped on two resource collections, that is first resource set and Secondary resource set, the corresponding orthogonal frequency division multiplexis of RE (Orthogonal Frequency Division Multiplexing in the first resource set, referred to as OFDM) symbol is the OFDM symbol comprising reference signal, the corresponding OFDM symbols of RE in the Secondary resource set are the OFDM symbol not comprising reference signal.The position of the first resource set and Secondary resource set is default.Relation between such as two resource collections is the front and rear time-division, such as set 1 is before the time of set 2, or both for intersect the time-division, 5 OFDM symbols are such as taken altogether, set 1 takes the 2nd, 3,4 symbols, set 2 takes the 1st and the 5th symbol, or set 1 takes even number symbols, and set 2 takes odd number symbols.Modulation symbol number in two set can be with equal, it is also possible to unequal.The reference modulation symbol of the modulation symbol is a default modulation symbol or is the modulation symbol being mapped in Secondary resource set.This way it is possible to avoid because synchronizing signal is destroyed the reception mistake for causing by CRS.
Preferably, the number of the modulation symbol being mapped in first resource set is less than or equal to the number of the modulation symbol being mapped in Secondary resource set.
Fig. 5 is the mapping graph of the reference modulation symbol provided according to the preferred embodiment of the present invention one, as shown in figure 5, giving an example, S1={ a1,a2,a3,a4, S2={ b1,b2,b3, S1In modulation symbol be mapped on the corresponding RE of symbol without CRS, B → A represents that B is the reference modulation symbol of A, and the reference modulation symbol of wherein a1 can be default modulation symbol.
When the reference modulation symbol of multiple modulation symbols is same modulation symbol, at least one modulation symbol is the modulation symbol mapped on the RE in the first resource set in the plurality of modulation symbol.As shown in figure 5, the reference modulation symbol of a3 and b1 is all a2, wherein b1 is the modulation symbol mapped on the RE in first resource set.
Preferably, the reference modulation symbol of each modulation symbol should be the modulation symbol in a resource nearest from oneself, or be one of modulation symbol in several resources nearest from oneself.Because the channel condition in two resources closer to the distance is more similar, by difference processing, the influence of channel can be removed.An example is given below, Fig. 6 is the schematic diagram that the RE provided according to the preferred embodiment of the present invention one refers to modulation symbol, as shown in Figure 6, one grid represents a RE, there is no CRS in the OFDM symbol of white portion, the reference modulation symbol of the modulation symbol on all RE is selected all from the RE of white portion, such as, the RE nearest apart from RE#3 is RE#1 and RE#5, therefore selects the modulation symbol on one of RE#1 as the reference modulation symbol of the modulation symbol on RE#3.
Preferred embodiment two：
The preferred embodiments of the present invention two provide an example for transmission synchronizing signal/synchronizing information.The sending method of MIB/SIB or Downlink Control Information or downlink data is similar.
Synchronizing information of the synchronizing signal comprising N number of bit, the synchronizing information includes at least one of：
Cell identity information, such as represent 504 cell IDs with 9bit；
The configured information of TDD/FDD, such as represented with 1bit；
Operation mode information, such as be independent operation standalone scenes, or with interior inband scenes; or protection band guard-band scenes; such as indicated with 2bit, or 1bit indicate, such as by inband outside a kind of two kinds of state instructions of scene；
Timing information, such as the synchronizing signal are sent once per 20ms, and which 20ms in 80ms is designated as with 2bit.
The resource that the synchronizing signal takes is the symbol where several symbols, including CRS in a subframe and the symbol without CRS.Two resource collections as described in embodiment one.For normal CP, symbol in time slot index sequentially in time is respectively 0,1 ..., 6, it is understood that there may be the index of the symbol of CRS belongs to set { 0, Isosorbide-5-Nitrae }, and remaining symbol is the symbol without CRS.For extension CP, symbol in time slot index sequentially in time is respectively 0,1 ..., 5, it is understood that there may be the index of the symbol of CRS belongs to set { 0,1,3 }, and remaining symbol is the symbol without CRS.The such as synchronizing signal is last 9 symbols in a subframe in the time domain, is all of subcarrier on frequency domain.For the RE where CRS, synchronizing signal is struck off, in order to avoid influence other UE to receive CRS.
N number of bit of the synchronizing signal is encoded using encoder, and the encoder can be convolution coder, or be RM code coders etc., and the present invention is not limited encoder, in practical application, can arbitrarily select a kind of encoder.Such as using the convolutional code of 1/3 code check, the RE numbers and the modulation system (such as BPSK or QPSK etc.) of use taken according to the synchronizing signal carry out rate-matched and obtain some bit to the data after coding.Then the bit is carried out into differential modulation, finally the modulation symbol after differential modulation is mapped in RE.
The modulation symbol of the synchronizing signal on symbol where for being mapped to CRS, its modulation symbol that the synchronizing signal on the symbol being mapped to outside CRS is should be with reference to modulation symbol.The modulation symbol of the synchronizing signal for being mapped on the symbol outside CRS, its other modulation symbol that the synchronizing signal on the symbol being mapped to outside CRS is should be with reference to modulation symbol.That is, the modulation symbol of the synchronizing signal on symbol where CRS, it is impossible to as the reference modulation symbol of other any modulation symbols.The reason for doing so be：If a modulation symbol is using the modulation symbol on symbol where CRS as referring to modulation symbol, then when this is precisely CRS with reference to modulation symbol, this modulation symbol will necessarily just demodulate incorrect.And it is not aware that the RE of the specific transmission of CRS, UE can not judge the incorrect of which modulation symbol demodulation due to UE.And adopt with the aforedescribed process, the corresponding modulation symbols of the RE where only CRS can demodulate incorrect, and other modulation symbol is not affected.Or, modulation symbol is preset with reference to known to modulation symbol can also be one.
Fig. 7 be according to the preferred embodiment of the present invention two provide CRS symbols on RE reference symbols map schematic diagram, as shown in Figure 7 in, give on each RE map modulation symbol reference modulation symbol schematic diagram.There is the RE of vertical line for the position of CRS.As can be seen that the reference modulation symbol of the reference modulation symbol of the modulation symbol mapped on RE on symbol where CRS is the modulation symbol mapped on RE on the symbol without CRS.The modulation symbol mapped on the RE on symbol where CRS is not the reference modulation symbol of any other modulation symbol.
Preferably, in order to improve the performance of differential ference spiral, the reference modulation symbol of the modulation symbol mapped on the RE on CRS symbols should be the modulation symbol mapped on the RE of its nearest neighbours, or be the modulation symbol mapped on a RE in multiple RE of its nearest neighbours.If as shown in fig. 7, the adjacent R E of a RE is the symbol without CRS, selecting modulation symbol on this adjacent RE as referring to modulation symbol.As shown in the straight arrow in Fig. 7, here, adjacent implication refers to：If a running time-frequency resource positional representation of RE is (k, l), wherein k represents sub-carrier indices, l represents notation index, then the running time-frequency resource position of its adjacent RE include (k ± 1, l), (k, l ± 1), (k ± 1, l ± 1).The such as one running time-frequency resource positional representation of RE is (3,4), so the running time-frequency resource position of its adjacent RE includes (3,5), (3,2), (2,4), (5,4), (2,3), (2,5), (4,3), (4,5).Fig. 8 is that the adjacent R E of the RE provided according to the preferred embodiment of the present invention refers to modulation symbol schematic diagram, as shown in figure 8, the wherein RE is identified with vertical line, adjacent R E Marking the cells.
If the adjacent R E of a RE is not without the symbol of CRS, it is to refer to modulation symbol to select the modulation symbol on the RE on a nearest symbol without CRS.As shown in two curved arrows in Fig. 7.
Through the above description of the embodiments, those skilled in the art can be understood that can be added the mode of required general hardware platform to realize according to the method for above-described embodiment by software, can certainly be by hardware, but the former is more preferably implementation method in many cases.Based on such understanding, the part that technical scheme substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, CD), it is used to including some instructions so that a station terminal equipment (can be mobile phone, computer, server, or the network equipment etc.) perform method described in each embodiment of the invention.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can be configured so that storage for performing the program code of following methods step：
S1, modulation symbol according to predetermined manner is mapped in first resource set and Secondary resource collection closes, wherein, orthogonal frequency division multiplex OFDM symbol corresponding with the Resource Unit RE in the first resource set is the OFDM symbol comprising reference signal, and OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal；
S2, the modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection.
Alternatively, storage medium is also configured to storage for performing the program code of above-described embodiment method step.
Alternatively, in the present embodiment, above-mentioned storage medium can be included 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 CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs above-described embodiment method step according to the program code stored in storage medium.
Alternatively, the specific example in the present embodiment may be referred to the example described in above-described embodiment and optional embodiment, and the present embodiment will not be repeated here.
Obviously, those skilled in the art should be understood that, above-mentioned of the invention each module or each step can be realized with general computing device, 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, so as to, can be stored in being performed by computing device in storage device, and in some cases, shown or described step can be performed with different from order herein, or they are fabricated to each integrated circuit modules respectively, or be fabricated to single integrated circuit module to realize by the multiple modules or step in them.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, is not intended to limit the invention, for a person skilled in the art, the present invention there can be various modifications and variations.All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included within the scope of the present invention.

Claims (20)

1. a kind of sending method of information, it is characterised in that including：
The modulation symbol is sent on resource collection corresponding with the modulation symbol of the information of transmission, wherein, the tune Symbol processed is obtained in the following manner with the mapping relations of the resource collection：By the modulation symbol according to default side Formula is mapped in first resource set and Secondary resource collection closes, wherein, with the resource list in the first resource set The corresponding orthogonal frequency division multiplex OFDM symbol of first RE is the OFDM symbol comprising reference signal, with described second The corresponding OFDM symbols of RE in resource collection are the OFDM symbol not comprising reference signal.
2. method according to claim 1, it is characterised in that
The position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined Position.
3. method according to claim 1, it is characterised in that
The OFDM symbol cyclic prefix CP in the case of routine CP, it is described comprising reference signal The index of OFDM symbol value, the index of the OFDM symbol not comprising reference signal from set { 0, Isosorbide-5-Nitrae } The value from set { 2,3,5,6 }；
In the case where the CP of the OFDM symbol is for extension CP, the OFDM symbols comprising reference signal Number index from set { 0,1,3 } value, the index of the OFDM symbol not comprising reference signal from set 2, 4,5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot takes from set { 0,1,2,3,4,5,6 } Value, in the case where CP is extended, OFDM symbol in LTE system index in one time slot from set 0,1,2, 3,4,5 } value in.
4. method according to claim 1, it is characterised in that
The number of the modulation symbol being mapped in the first resource set is not more than and is mapped in the Secondary resource collection The number of the modulation symbol in conjunction.
5. method according to claim 1, it is characterised in that
The modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the ginseng of the modulation symbol It is the modulation symbol being mapped in the Secondary resource set to examine modulation symbol.
6. method according to claim 5, it is characterised in that
When the reference modulation symbol of multiple modulation symbols is same modulation symbol, the multiple modulation symbol In at least one modulation symbol be the modulation symbol for being mapped in RE in the first resource set.
7. method according to claim 5, it is characterised in that
Before the differential modulation, information is encoded and rate-matched.
8. method according to claim 5, it is characterised in that
The reference modulation symbol of the modulation symbol is a money nearest apart from the resource of modulation symbol mapping The modulation symbol mapped on source, wherein, one modulation symbol is the tune being mapped in the Secondary resource set Symbol processed, or, the reference modulation symbol of the modulation symbol is nearest apart from the resource of modulation symbol mapping Multiple resources on one of multiple modulation symbols for mapping, wherein, the modulation symbol in the multiple modulation symbol is It is mapped in the modulation symbol in the Secondary resource set.
9. method according to claim 1, it is characterised in that described information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
10. a kind of method of reseptance of information, it is characterised in that including：
The modulation symbol is received on resource collection corresponding with the modulation symbol of receive information, wherein, the tune Symbol processed is obtained in the following manner with the mapping relations of the resource collection：By the modulation symbol according to default side Formula is mapped in first resource set and Secondary resource collection closes, wherein, with the resource list in the first resource set The corresponding orthogonal frequency division multiplex OFDM symbol of first RE is the OFDM symbol comprising reference signal, with described second The corresponding OFDM symbols of RE in resource collection are the OFDM symbol not comprising reference signal.
11. methods according to claim 10, it is characterised in that
The position that the first resource set and the Secondary resource are integrated into the OFDM symbol is predefined Position.
12. methods according to claim 10, it is characterised in that
The OFDM symbol cyclic prefix CP in the case of routine CP, it is described comprising reference signal The index of OFDM symbol value, the index of the OFDM symbol not comprising reference signal from set { 0, Isosorbide-5-Nitrae } The value from set { 2,3,5,6 }；
In the case where the CP of the OFDM symbol is for extension CP, the OFDM symbols comprising reference signal Number index from set { 0,1,3 } value, the index of the OFDM symbol not comprising reference signal from set 2, 4,5 } value in, wherein, the OFDM symbol is the OFDM symbol in LTE system, under conventional CP, OFDM symbol in LTE system index in one time slot takes from set { 0,1,2,3,4,5,6 } Value, in the case where CP is extended, OFDM symbol in LTE system index in one time slot from set 0,1,2, 3,4,5 } value in.
13. methods according to claim 10, it is characterised in that
The number of the modulation symbol being mapped in the first resource set is not more than and is mapped in the Secondary resource collection The number of the modulation symbol in conjunction.
14. methods according to claim 10, it is characterised in that
The modulation symbol is using the modulation symbol after differential modulation；
The reference modulation symbol of the modulation symbol is a default modulation symbol, or, the ginseng of the modulation symbol It is the modulation symbol being mapped in the Secondary resource set to examine modulation symbol.
15. methods according to claim 14, it is characterised in that
When the reference modulation symbol of multiple modulation symbols is same modulation symbol, the multiple modulation symbol At least one modulation symbol is the modulation symbol for being mapped in RE in the first resource set in number.
16. methods according to claim 14, it is characterised in that
Before the differential modulation, information is encoded and rate-matched.
17. methods according to claim 14, it is characterised in that
The reference modulation symbol of the modulation symbol is a money nearest apart from the resource of modulation symbol mapping The modulation symbol mapped on source, wherein, one modulation symbol is the tune being mapped in the Secondary resource set Symbol processed, or, the reference modulation symbol of the modulation symbol is nearest apart from the resource of modulation symbol mapping Multiple resources on one of multiple modulation symbols for mapping, wherein, the modulation symbol in the multiple modulation symbol is It is mapped in the modulation symbol in the Secondary resource set.
18. methods according to claim 10, it is characterised in that described information includes at least one of：
Synchronizing information, Master Information Block MIB, system information block SIB, Downlink Control Information, and downlink data.
A kind of 19. dispensing devices of information, it is characterised in that including：
Sending module, for sending the modulation symbol on resource collection corresponding with the modulation symbol of the information of transmission, Wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation is accorded with Number it is mapped in first resource set according to predetermined manner and Secondary resource collection closes, wherein, with the first resource collection The corresponding orthogonal frequency division multiplex OFDM symbols of Resource Unit RE in conjunction are the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
A kind of 20. reception devices of information, it is characterised in that including：
Receiver module, for receiving the modulation symbol on resource collection corresponding with the modulation symbol of receive information, Wherein, the modulation symbol is obtained in the following manner with the mapping relations of the resource collection：The modulation is accorded with Number it is mapped in first resource set according to predetermined manner and Secondary resource collection closes, wherein, with the first resource collection The corresponding orthogonal frequency division multiplex OFDM symbols of Resource Unit RE in conjunction are the OFDM symbol comprising reference signal, OFDM symbol corresponding with the RE in the Secondary resource set is the OFDM symbol not comprising reference signal.
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