CN107026719A - Method for transmitting signals and communication equipment - Google Patents

Method for transmitting signals and communication equipment Download PDF

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Publication number
CN107026719A
CN107026719A CN201610063757.4A CN201610063757A CN107026719A CN 107026719 A CN107026719 A CN 107026719A CN 201610063757 A CN201610063757 A CN 201610063757A CN 107026719 A CN107026719 A CN 107026719A
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CN
China
Prior art keywords
ofdm symbol
remote radio
radio node
time
predetermined amount
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Granted
Application number
CN201610063757.4A
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Chinese (zh)
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CN107026719B (en
Inventor
郝兵琼
夏林峰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201610063757.4A priority Critical patent/CN107026719B/en
Publication of CN107026719A publication Critical patent/CN107026719A/en
Application granted granted Critical
Publication of CN107026719B publication Critical patent/CN107026719B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the present application provides a kind of method for transmitting signals and communication equipment, and this method includes obtaining by the first remote radio node and needs at least one first orthogonal frequency division multiplex OFDM symbol to the transmission of up processing unit；Send at least one second OFDM symbol；At least one described second OFDM symbol is to add S zero and last S of removal at least one first OFDM symbol to obtain before at least one described first OFDM symbol in time domain, and S is the integer more than or equal to 1；Or, at least one described second OFDM symbol is that each OFDM symbol at least one described first OFDM symbol is divided into front portion and rear portion in time domain, and the front portion is positioned over into what is obtained after the rear portion.The embodiment of the present application can distinguish the source of combining signal, it is possible to achieve processing need to be only combined to part signal, reduce the influence to systematic function.

Description

Method for transmitting signals and communication equipment
Technical field
The application is related to the communications field, and is set more particularly, to a kind of method for transmitting signals and communication It is standby.
Background technology
The situation of existing indoor covering system generally existing signal combining.Can be with enhanced room after signal combining The advantages of covering, reduction user's switching probability.But up processing unit can not be distinguished after combining well Signal which remote radio node come from, it is impossible to obtain the information of the remote radio node.
It would therefore be highly desirable to need a kind of technical scheme, the source of combining signal can be preferably distinguished.
The content of the invention
The embodiment of the present application provides a kind of method for transmitting signals and communication equipment, can distinguish combining signal Source.
First aspect there is provided a kind of method for transmitting signals, including：Obtain and pass through the first remote radio section Put and need at least one the first OFDM (Orthogonal sent to up processing unit Frequency Division Multiplexing, OFDM) symbol；Send at least one the 2nd OFDM symbols Number；At least one second OFDM symbol be in time domain at this at least one first OFDM symbol Before plus S zero and remove last S of at least one first OFDM symbol and obtain, S is Integer more than or equal to 1；Or, at least one second OFDM symbol be by this at least one first Each OFDM symbol is divided into front portion and rear portion in time domain in OFDM symbol, and by before this A part is positioned over what is obtained after the rear portion.
Alternatively, in the embodiment of the present application, at least one second OFDM symbol is compared at least one First OFDM symbol, has carried out delay process.Wherein, delay process can have two ways, one In kind of mode, before at least one first OFDM symbol most preceding cyclic prefix plus S zero, and go At least one the 2nd OFDM symbols are obtained except last S of at least one first OFDM symbol Number；, will at least one the first OFDM symbols by the way of cyclic shift in the second way Each OFDM symbol is divided into front portion and rear portion in time domain in number, and the front portion is put It is placed in after the rear portion and obtains at least one second OFDM symbol.
Both the above processing mode can realize that up processing unit is distinguished and obtain multiple remote radio nodes Information, and can need to only enter line delay combining processing, other OFDM symbols to part OFDM symbol It is number unaffected.
In addition, carrying out delay process by way of cyclic shift, running time-frequency resource can be extended, for example, It can make running time-frequency resource extension will by about one time.
Alternatively, in order that obtaining different remote radio nodes has different delays, then for different Remote radio node, S value can be different.
Alternatively, in the embodiment of the present application, S length can be less than or equal to cyclic prefix (Cycle Prefix, CP) length, it is possible thereby to ensure be delayed OFDM symbol integrality, it is to avoid because delay The systematic function caused declines.
In the embodiment of the present application, remote radio node can be Remote Radio Unit (Radio Remote Unit,RRU).Up processing unit can obtain the signal of remote radio node transmission, and the signal is entered Row demodulation, can obtain measurement amount, up processing unit can also be further to end from the signal of demodulation The resource that end sends upstream data is scheduled, and specifically, the up processing unit can be Base-Band Processing Unit (Base Band Unit, BBU).Combiner unit can be RRU hubs (rHub).
In the embodiment of the present application, this method can apply to Long Term Evolution LTE system, the first OFDM Symbol is the OFDM symbol where detection reference signal SRS.That is, can be only to SRS institutes OFDM symbol carry out delay process.Line delay and conjunction are entered to the OFDM symbol where SRS Road is handled, and other OFDM symbols will not be impacted, the entire effect to system is smaller.
Alternatively, in the embodiment of the present application, first OFDM symbol is to carry within a predetermined period of time Specific OFDM symbol, wherein, existence time interval between each two predetermined amount of time.
The embodiment of the present application is directed to a certain remote radio node, the institute that can be received to the remote radio node OFDM symbol where some SRS carries out delay process, can also be only to the remote radio node in portion OFDM symbol where the SRS received between timesharing carries out delay process.For example, can only to all or OFDM symbol where the SRS received in the predetermined amount of time of part carries out delay process.Certainly, also may be used To carry out delay process to other specific OFDM symbols in all or part of predetermined amount of time, or, Delay process can be carried out to all OFDM symbols in all or part of predetermined amount of time.
Referred to herein as predetermined amount of time be in system carrying need carry out delay process OFDM symbol Number period general designation.Depending on the division of predetermined amount of time can be according to concrete condition.For example, predetermined Period is 3 periods in every 7 continuous periods, wherein, in 3 predetermined amount of time Any two predetermined amount of time is separated by least one non-predetermined times section.
Alternatively, in the embodiment of the present application, received in the first predetermined amount of time by first radio frequency After first OFDM symbol for zooming out node, passed through after discarding in continuous M-1 predetermined amount of time First OFDM symbol of the first remote radio node is crossed, the M is the integer more than or equal to 2. Wherein, the M is the quantity of remote radio node group, and the M remote radio node group has identical Transmitting antenna is configured.Need to be prolonged for example, configuration antenna 0 is used for M group remote radios node transmission When the OFDM symbol that handles, configuration antenna 0 and 1 sends other for the M group remote radio nodes The OFDM symbol of delay process need not be carried out.
Specifically, for M group remote radio nodes, different pre- of difference group remote radio nodes correspondence Fix time section, each predetermined amount of time is used to sending the corresponding delay process of corresponding remote radio node group OFDM symbol afterwards.Namely delay process and conjunction are carried out to remote radio node by the way of poll Road is sent, it is possible thereby to obtain the metrical information of more remote radio nodes, each polling cycle is compared It is shorter in measurement period before, the measurement for the remote radio node for needing to obtain adjacent cell that is particularly suitable for use in The scene of information.
Alternatively, in the embodiment of the present application, can be in the first predetermined amount of time to predetermined described first At least one OFDM symbol of the remote radio node received in period carries out delay process； At least one described OFDM symbol after the processing of two predetermined amount of time forward delay intervals, wherein, this is second pre- Section of fixing time is different from first predetermined amount of time.Or, can be in the first predetermined amount of time to described At least one OFDM symbol of the remote radio node received in first predetermined amount of time is entered at line delay Reason；At least one OFDM symbol described in after the first predetermined amount of time forward delay interval processing.
That is, the OFDM symbols that can be handled the need for current predetermined amount of time is to being currently received Number delay process and send, or handle the need for being received in a certain predetermined amount of time OFDM symbol, which is stored, to be carried out delay process to other predetermined amount of time and sends.It is possible thereby to realize to pre- The flexible configuration for section of fixing time.
Alternatively, in the embodiment of the present application, this method is performed by the first remote radio node, namely Delay process can in itself be performed by remote radio node.Remote radio node can be incited somebody to action by single antenna At least one second OFDM symbol is sent to combiner unit.Each is transmitted by way of single antenna to penetrate Frequency zooms out the data of node, and up processing unit can be caused to obtain the information of more remote radio nodes.
Alternatively, in the embodiment of the present application, this method is performed by combiner unit, namely delay process can To be performed by combiner unit.
The combiner unit also obtains by the second remote radio node and needs to send to the up processing unit At least one the 3rd OFDM symbol；Send at least one the 4th OFDM symbol；Wherein, this is extremely Few second OFDM symbol and at least one the 4th OFDM symbol are sent in the way of combining To the up processing unit, wherein, at least one second OFDM symbol and this at least one the 4th OFDM symbol has different delays；At least one the 4th OFDM symbol be in time domain at this extremely Add R zero before few 3rd OFDM symbol and remove at least one the 3rd OFDM symbol Last R obtain, R is the integer more than or equal to 1；Or, at least one the 4th OFDM Symbol be by this at least one the 4th OFDM symbol each OFDM symbol be divided into time domain it is previous Part and rear portion, and the front portion is positioned over what is obtained after the rear portion.
There is provided a kind of method for transmitting signals for second aspect, it is characterised in that this method is by up processing Unit is performed, including：It is determined that needing to obtain the quantity of the remote radio node of metrical information；According to the need The quantity of the remote radio node of metrical information is obtained, the needs are obtained with the remote radio of metrical information Node is grouped；To use the remote radio node group configuration of the identical transmitting antenna different scheduled time Section, in the remote radio node group at least two remote radio nodes send it is each it is self-corresponding at least One OFDM symbol, each self-corresponding at least one OFDM symbols of at least two remote radios node Number have different delayed time.
Alternatively, up processing unit is at least one remote radio node of the remote radio node group Each corresponding at least one OFDM symbol configuration of remote radio node is following is handled：The processing is included in In time domain before at least one OFDM symbol plus at least one zero and removes this at least one At least one of OFDM symbol, wherein, the digit for plus zero is identical with the digits long removed；Or, Each OFDM symbol at least one OFDM symbol is divided into front portion and latter in time domain Part, and the front portion is positioned over what is obtained after the rear portion.
Alternatively, up processing unit determines the remote radio node affiliated subdistrict for needing to obtain metrical information Quantity and number of transmission antennas；The quantity of the remote radio node of metrical information is obtained as needed, The needs are obtained measurement letter by the quantity of the remote radio node affiliated subdistrict and the transmitting antenna data The remote radio node of breath is grouped；It is used to send this for each remote radio node group configuration single antenna The corresponding OFDM symbol of each remote radio node.
Alternatively, this method is applied to Long Term Evolution LTE system, and the OFDM symbol refers to for detection OFDM symbol where signal SRS.
The third aspect is there is provided a kind of communication equipment, for performing above-mentioned first aspect or first aspect Method in any optional implementation.Specifically, the communication equipment includes being used to perform above-mentioned first The modular unit of method in any possible implementation of aspect or first aspect.
Fourth aspect is there is provided a kind of communication equipment, for performing above-mentioned second aspect or second aspect Method in any optional implementation.Specifically, the communication equipment includes being used to perform above-mentioned second The modular unit of method in any possible implementation of aspect or second aspect.
There is provided a kind of communication equipment in terms of 5th, including：Memory and processor, the memory are used In store instruction, the processor is used for the instruction for performing the memory storage, and when the computing device During the instruction of the memory storage, the execution causes times of the computing device first aspect or first aspect Method in optional implementation of anticipating.
6th aspect, improves a kind of communication equipment, including：Memory and processor, the memory are used In store instruction, the processor is used for the instruction for performing the memory storage, and when the computing device During the instruction of the memory storage, the execution causes times of the computing device second aspect or second aspect Method in optional implementation of anticipating.
There is provided a kind of computer-readable storage medium in terms of 7th, be stored with journey in the computer-readable storage medium Sequence code, the program code is used for any optional reality for indicating to perform above-mentioned first aspect or first aspect Method in existing mode.
Eighth aspect is there is provided a kind of computer-readable storage medium, and be stored with journey in the computer-readable storage medium Sequence code, the program code is used for any optional reality for indicating to perform above-mentioned second aspect or second aspect Method in existing mode.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to embodiment or existing skill The accompanying drawing used required in art description is briefly described, it should be apparent that, drawings in the following description Only some embodiments of the present invention, for those of ordinary skill in the art, are not paying creation Property work on the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the application scenario diagram according to the embodiment of the present application.
Fig. 2 is the indicative flowchart of the method for transmitting signals according to the embodiment of the present application.
Fig. 3 be according to the embodiment of the present application the need for carry out delay process OFDM symbol it is schematic Figure.
Fig. 4 be according to the embodiment of the present application the need for carry out delay process OFDM symbol it is schematic Figure.
Fig. 5 is to carry out the schematic of delay process configuration to remote radio node according to the embodiment of the present application Flow chart.
Fig. 6 is the predetermined amount of time distribution diagram according to the embodiment of the present application.
Fig. 7 is the predetermined amount of time distribution diagram according to the embodiment of the present application.
Fig. 8 is the predetermined amount of time distribution diagram according to the embodiment of the present application.
Fig. 9 is the predetermined amount of time distribution diagram according to the embodiment of the present application.
Figure 10 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 11 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 12 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 13 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 14 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 15 is the delay process conceptual scheme according to the embodiment of the present application.
Figure 16 is on the delay profile according to the embodiment of the present application match obtaining each remote radio node Multipath cluster schematic figure.
Figure 17 is the schematic block diagram of the communication equipment according to the embodiment of the present application.
Figure 18 is the schematic block diagram of the communication equipment according to the embodiment of the present application.
Figure 19 is the schematic block diagram of the communication equipment according to the embodiment of the present application.
Figure 20 is the schematic block diagram of the communication equipment according to the embodiment of the present application.
Embodiment
The term " part " that uses in this manual, " module ", " system " etc. are used to represent that computer is related Entity, hardware, firmware, the combination of hardware and software, software or executory software.For example, Part can be but not limited to, the process run on a processor, processor, object, executable file, Execution thread, program and/or computer.By diagram, the application and calculating run on the computing device is set Standby can be part.One or more parts can reside in process and/or execution thread, and part can position In on a computer and/or being distributed between 2 or more computers.In addition, these parts can be from The various computer-readable mediums for the various data structures that are stored with above are performed.Part can be for example according to tool Have one or more packets (for example from local system, distributed system and/or internetwork another The data of two parts of one part interaction, such as by signal and the internet of other system interactions) Signal is communicated by locally and/or remotely process.
The various aspects or feature of the application can be implemented as method, device or use standard program and/or work The product of journey technology.Term " product " used herein cover can from any computer-readable device, Carrier or the computer program of medium access.For example, computer-readable medium can include, but are not limited to: Magnetic memory device (for example, hard disk, floppy disk or tape etc.), CD (for example, CD (Compact Disk, Compact disk), DVD (Digital Versatile Disk, digital universal disc) etc.), smart card and flash memories Part (for example, EPROM (Erasable Programmable Read-Only Memory, it is erasable to compile Journey read-only storage), card, rod or Keyed actuator etc.).In addition, various storage media described herein The one or more equipment and/or other machine readable medias for storage information can be represented.Term " machine Computer-readable recording medium " may include but be not limited to, wireless channel and can store, include and/or carry instruct and/or The various other media of data.
Fig. 1 is the schematic diagram of the communication system used in the embodiment of the present application.As shown in figure 1, the communication system System 100 includes up processing unit 101, and combiner unit 102, remote radio node 103 and terminal are set Standby 104.Base station can include up processing unit 101, combiner unit 102 and remote radio node 103. Base station can be the evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, or Base station in person's 5G systems etc..Remote radio node 101, combiner unit 102, baseband processing unit 103 Data can be transmitted by optical fiber or twisted-pair feeder etc. each other with functional unit 105.Remote radio node Can be Remote Radio Unit (Radio Remote Unit, RRU), for example, pico RRU.Combining list Member can be rHUB, and up processing unit can obtain the signal of remote radio node transmission, to the signal It is demodulated, measurement amount can be obtained from the signal of demodulation, up processing unit can also be further right The resource that terminal sends upstream data is scheduled, and specifically, the up processing unit can be BBU. Functional unit 105 can be service node (service anchor, SVA).Remote radio node 103 can To be communicated with multiple terminal devices (such as terminal device 104).Terminal device 104 can be such as honeybee Cellular telephone, smart phone, portable computer, handheld communication devices, handheld computing device, satellite radio Electric installation, global positioning system, PDA and/or for communicated on wireless communication system 100 it is any its It is adapted to equipment.
Some OFDM symbols of multiple remote radio nodes can be combined in combiner unit, if Up processing unit needs to obtain the metrical information of remote radio node, then needs to know the source of signal, These OFDM symbols of different remote radio nodes are needed with different delays, it is therefore desirable to carried out Delay process, wherein, delay process can be performed at remote radio node, can also be in combiner unit Place is performed.Up processing unit is matched to the OFDM of combining on delay profile, obtains each radio frequency The multipath cluster of node is zoomed out, the measurement amount of each remote radio node can be obtained, these measurement amounts can be with Determine the coverage of remote radio node and terminal is positioned, and obtain thermally figure distribution etc..
The embodiment of the present application can apply to LTE system communication, A-LTE systems communication, Wifi communication and 5G communications etc..
Describe in detail and how the signal of remote radio node be transmitted below with reference to Fig. 2 to Figure 16, Specially how delay process is carried out to OFDM symbol.
Fig. 2 is the indicative flowchart of method for transmitting signals 200 according to the embodiment of the present application.This method 200 It can be performed, can also be performed by combiner unit by the first remote radio node.Carried in the embodiment of the present application To remote radio node can be Remote Radio Unit (Radio Remote Unit, RRU), for example, Pico RRU.Combiner unit can be rHub.
In 201, obtain by the first remote radio node and need to send extremely to up processing unit A few first orthogonal frequency division multiplex OFDM symbol.
In 202, at least one second OFDM symbol is sent；Wherein, at least one the 2nd OFDM Symbol is to add S zero before at least one first OFDM symbol at this and remove this at least in time domain What last S of one the first OFDM symbol obtained, S is the integer more than or equal to 1；Or, should At least one second OFDM symbol is that each OFDM is accorded with least one first OFDM symbol by this Number it is divided into front portion and rear portion in time domain, and the front portion is positioned over the rear portion Obtain afterwards.
It should be understood that above-mentioned first remote radio node can be any that can be communicated with up processing unit Remote radio node.
In the embodiment of the present application, it is simple and non-limiting for description, by by least one first OFDM symbol converts the processing mode referred to as delay process for obtaining at least one the 2nd OFDM.
In the embodiment of the present application, above-mentioned first OFDM symbol and the second OFDM symbol are also In first and second be also to be intended merely to describe the simple source for distinguishing OFDM symbol and before processing Afterwards.For example, the 3rd OFDM can will be referred to as by the OFDM symbol of the second remote radio node The 3rd OFDM symbol after symbol, delay process is referred to as the 4th OFDM symbol.
In the embodiment of the present application, after OFDM symbol is obtained, the OFDM obtained can first be determined Symbol whether be by the first remote radio node the need for carry out delay process OFDM, wherein, should The OFDM symbol for needing to carry out delay process is by the first remote radio node and purpose is up processing The part OFDM symbol of unit.If needing to carry out the OFDM symbol of delay process, then carry out Delay process.
The embodiment of the present application can apply to LTE system, it is necessary to carry out the OFDM symbol of delay process Can be the OFDM symbol where detection reference information (Sounding Reference Signal, SRS). For example, as shown in figure 3, in a frame, totally 14 OFDM symbols, can only to the frame most Latter OFDM symbol (OFDM symbol where SRS) line delay processing.To the OFDM where SRS Symbol enters line delay and combining processing, other OFDM symbols will not be impacted, to system Entire effect is smaller.
The embodiment of the present application is directed to a certain remote radio node, the institute that can be received to the remote radio node OFDM symbol where some SRS carries out delay process, can also be only to the remote radio node in portion OFDM symbol where the SRS received between timesharing carries out delay process.For example, can only to all or OFDM symbol where the SRS received in the predetermined amount of time of part carries out delay process.
It is of course also possible to prolong to other specific OFDM symbols in all or part of predetermined amount of time When handle, or, line delay can be entered to all OFDM symbols in all or part of predetermined amount of time Processing.
Referred to herein as predetermined amount of time be in system carrying need carry out delay process OFDM symbol Number period general designation.Depending on the division of predetermined amount of time can be according to concrete condition.For example, as schemed Shown in 4, predetermined amount of time is 3 periods in every 7 continuous periods, wherein, 3 make a reservation for Any two predetermined amount of time in period is separated by least one non-predetermined times section.It is pre- shown in Fig. 4 The length of section of fixing time and non-predetermined times section is 40ms, but the application is not limited to this.
In the embodiment of the present application, it only can carry out being directed to a certain remote radio section in part predetermined amount of time The delay process operation of point.
For example, it is assumed that in the presence of two remote radio nodes, i.e. remote radio node 1 and remote radio node 2, then remote radio node 1 is in predetermined amount of time 1,3,5 ... interior prolongs to specific OFDM symbol When handle, remote radio node 2 is in predetermined amount of time 2,4,6 ... it is interior to specific OFDM symbol carry out Delay process.
In the embodiment of the present application, which remote radio node which predetermined amount of time is used to for obtain Its metrical information can be configured by up processing unit.For example, in method 300 as shown in Figure 5, In 301, it is determined that needing to obtain the quantity of the remote radio node of metrical information, in 302, according to institute The quantity for the remote radio node for needing to obtain metrical information is stated, needs acquisition metrical information to penetrate to described Frequency zooms out node and is grouped；In 303, to be assembled using the remote radio node of identical transmitting antenna Different predetermined amount of time are put, at least two remote radio nodes in the remote radio node group At least one each self-corresponding OFDM symbol is sent, at least two remote radios node is each corresponded to At least one OFDM symbol there is different delayed time.
Specifically, the quantity of the remote radio node of metrical information, remote radio can be obtained as needed The quantity and number of transmission antennas of node affiliated subdistrict, the remote radio section to needing acquisition metrical information Point is grouped；Being used for specific OFDM symbol for each remote radio node group configuration single antenna (needs Carry out the OFDM symbol of delay process) transmission；To use the remote radio section of identical transmitting antenna Point, which is assembled, puts different predetermined amount of time, for carrying out delay process operation to the specific OFDM symbol And send.
For example, it is assumed that the quantity for needing to obtain the remote radio node of metrical information is 2N, each at most N Individual remote radio node can distinguish signal source, and each remote radio node by delay process Having two transmission antennas, i.e. antenna 0 and antenna 1 respectively, (namely system has two logical antennas, day Line 0 and antenna 1), then remote radio node can be divided into two groups, first group of remote radio node passes through Antenna 0 transmit data, second group of remote radio node by antenna 1 transmit data, then two group nodes or Person's combiner unit the specific OFDM of two group node can be met respectively in all predetermined amount of time into Line delay handles to merge and send.
In another example, it is assumed that the quantity for needing to obtain the remote radio node of metrical information is 4N, every time at most N number of remote radio node can distinguish signal source, and each remote radio section by delay process Point has two transmission antennas, i.e. antenna 0 and antenna 1 respectively, then remote radio node can be divided into four Group, first group and second group of remote radio node transmit data by antenna 0, and the 3rd group and the 4th group is penetrated Frequency zooms out node and transmits data by antenna 1.Because first group and second group of remote radio node pass through phase Same antenna transmission data, then need to distribute to the different predetermined amount of time use of two groups of remote radio nodes In carrying out delay process and data transmission, the 3rd group similar with the 4th group of remote radio node.But it is due to First and second group and third and fourth group of remote radio node are by different antenna transmission data, then without area Time segment.It is interior to specific for example, first group of remote radio node is in predetermined amount of time 1,3,5 ... OFDM symbol carries out delay process, and it is interior that second group of remote radio node is in predetermined amount of time 2,4,6 ... To specific OFDM symbol carry out delay process, the 3rd group of remote radio node in predetermined amount of time 1,3, 5 ... is interior to specific OFDM symbol progress delay process, and the 4th group of remote radio node is in the scheduled time Section 2,4,6 ... is interior to carry out delay process to specific OFDM symbol.
For another example totally three cells, each cell needs to obtain the number of the remote radio node of metrical information Measure as 4N, at most N number of remote radio node can distinguish signal source by delay process every time, And each remote radio node has two transmission antennas, i.e. antenna 0 and antenna 1 respectively.It is then each small The corresponding remote radio node in area can be divided into two groups, then totally 12 groups of remote radio nodes, and six groups of radio frequencies are drawn Remote node can be by the data of antenna transmission, and six groups of remote radio nodes can be passed by antenna 1 in addition Transmission of data.The different radio frequency for transmitting data using the same antenna, which zooms out node group, to be needed to make a reservation for different Period carries out delay process to specific OFDM symbol and sent.
For another example assuming that the quantity for needing to obtain the remote radio node of metrical information is N, every time at most N number of remote radio node can distinguish signal source, and each remote radio section by delay process Point has two transmission antennas, i.e. antenna 0 and antenna 1 respectively, then remote radio node can be all pre- Delay process is carried out to specific OFDM symbol in section of fixing time and sent.
In the embodiment of the present application, the data of each remote radio node are transmitted by way of single antenna, Up processing unit can be caused to obtain the information of more remote radio nodes.
In the embodiment of the present application, being received in a certain predetermined amount of time needs to carry out delay process After OFDM symbol, the specific OFDM that continuous M-1 predetermined amount of time is received after can abandoning Symbol, wherein, the M is the quantity of remote radio node group, the M remote radio node group The OFDM symbol handled by same antenna forward delay interval, the M is more than or equal to 2.
In the embodiment of the present application, the M group remote radio nodes have identical antenna configuration.For example, Configuration antenna 0 is used for the M group remote radios node and sends the OFDM symbol for needing to carry out delay process, Configuration antenna 0 and 1 sends other for the M group remote radio nodes need not carry out delay process OFDM symbol.
In the embodiment of the present application, a certain remote radio node or combiner unit will can make a reservation for first At least one OFDM symbol for the remote radio node that period receives is stored to the second predetermined amount of time Carry out delay process；Sent in the second predetermined amount of time and carry out at least one OFDM described in delay process Symbol, the first predetermined amount of time is different from the second predetermined amount of time.
Or, a certain remote radio node or combiner unit can be in the first predetermined amount of time to described At least one OFDM symbol of the remote radio node received in one predetermined amount of time is entered at line delay Reason；At least one OFDM symbol described in after the first predetermined amount of time forward delay interval processing.
That is, for the specific OFDM symbol of a certain remote radio node, can be current Predetermined amount of time to being currently received the need for the OFDM symbol that handles carry out delay process and send, or The OFDM symbol that person is handled the need for being received in a certain predetermined amount of time stores predetermined to other Period carries out delay process and sent.Illustrate both of these case below with reference to Fig. 6-9.
For example, it is assumed that the quantity for needing to obtain the remote radio node of metrical information is 4N, each at most N Individual remote radio node can distinguish signal source, and each remote radio node by delay process There are two transmission antennas, i.e. antenna 0 and antenna 1 respectively, then remote radio node can be divided into four groups, First group and second group of remote radio node pass through antenna 0 and transmit data, and the 3rd group and the 4th group of radio frequency are drawn Remote node transmits data by antenna 1.Assuming that the data after first group of remote radio node combining are data 0, the data after second group of remote radio node combining are data 1.Can be using as shown in Figure 6 and Figure 7 Two kinds of polls mode by antenna 0 transmit this two groups of remote radio node combinings data, wherein, Combining data 0 represent the data after first group of remote radio node combining, and combining data 1 represent second group Data after remote radio node combining.The data transfer mode of 3rd group and the 4th group remote radio node It is similar, repeat no more.
As shown in FIG. 6, first group of remote radio node is transmitted in the scheduled time in predetermined amount of time 0 The combining data of the specific OFDM symbol received in section 0, and it is discarded in what is received in predetermined amount of time 0 The specific OFDM symbol of second group of remote radio node；Second group of radio frequency is transmitted in predetermined amount of time 1 to draw The combining data for the specific OFDM symbol that remote node is received in predetermined amount of time 1, and be discarded in predetermined The specific OFDM symbol of the first group of remote radio node received in period 1；In predetermined amount of time 2 Transmit the combining number for the specific OFDM symbol that first group of remote radio node is received in predetermined amount of time 2 According to, and it is discarded in the specific OFDM symbol of the second group of remote radio node received in predetermined amount of time 2, By that analogy.
As shown in FIG. 7, first group of remote radio node is transmitted in the scheduled time in predetermined amount of time 0 The combining data of the specific OFDM symbol received in section 0, by second group received in predetermined amount of time 0 The specific OFDM symbol of remote radio node is stored to predetermined amount of time 1；Transmitted in predetermined amount of time 1 The combining data for the specific OFDM symbol that second group of remote radio node is received in predetermined amount of time 0, lose Abandon the specific OFDM symbol of the first group and second group remote radio node received in predetermined amount of time 1； First group of remote radio node is transmitted in the specific of the interior reception of predetermined amount of time 2 in predetermined amount of time 2 The combining data of OFDM symbol, by the number of the second group of remote radio node received in predetermined amount of time 2 According to storing to predetermined amount of time 3；Second group of remote radio node is transmitted in pre- timing in predetermined amount of time 3 Between section 2 receive specific OFDM symbol combining data, be discarded in predetermined amount of time 3 reception first The specific OFDM symbol of group and second group of remote radio node；The like.
Assuming that totally three cells, each cell needs the quantity for obtaining the remote radio node of metrical information to be 4N, at most N number of remote radio node can distinguish signal source by delay process every time, and Each remote radio node has two transmission antennas, i.e. antenna 0 and antenna 1 respectively.Then each cell pair The remote radio node answered can be divided into two groups, then totally 12 groups of remote radio nodes, it is assumed that first group to Six groups of remote radio nodes transmit data by antenna 0, and the 7th group to the 12nd group remote radio node passes through Antenna 1 transmits data.Antenna 0 can be passed through by the way of two kinds of polls as shown in Figure 8 and Figure 9 The data of this six groups of remote radio nodes are transmitted, wherein, combining data 0 represent first group of remote radio section The combining data of the specific OFDM symbol of point, combining data 1 represent the spy of second group of remote radio node Determine the combining data of OFDM symbol, combining data 2 represent the specific of the 3rd group of remote radio node The combining data of OFDM symbol, combining data 3 represent the specific OFDM of the 4th group of remote radio node The combining data of symbol, combining data 4 represent the specific OFDM symbol of the 5th group of remote radio node Combining data, combining data 5 represent the combining number of the specific OFDM symbol of the 6th group of remote radio node According to.Other six ancestrals remote radio nodes are similar by the data transfer mode of antenna 1, repeat no more.
As shown in FIG. 8, transmitted in predetermined amount of time 0 by first group of remote radio node in pre- timing Between the combining data of specific OFDM symbol that receive in section 0, and be discarded in reception in predetermined amount of time 0 Other five groups of remote radio nodes specific OFDM symbol；Transmitted in predetermined amount of time 1 by second group The combining data for the specific OFDM symbol that remote radio node is received in predetermined amount of time 1, and abandon The specific OFDM symbol of other the five groups of remote radio nodes received in predetermined amount of time 1；Predetermined Period 2 transmits the specific OFDM symbols received by the 3rd group of remote radio node in predetermined amount of time 2 Number combining data, and be discarded in the spy of other the five groups of remote radio nodes received in predetermined amount of time 2 Determine OFDM symbol；Transmitted in predetermined amount of time 3 by the 4th group of remote radio node in predetermined amount of time 3 The combining data of the specific OFDM symbol of interior reception, and it is discarded in other of the interior reception of predetermined amount of time 3 The specific OFDM symbol of five groups of remote radio nodes；Transmit and drawn by the 5th group of radio frequency in predetermined amount of time 4 The combining data for the specific OFDM symbol that remote node is received in predetermined amount of time 4, and be discarded in predetermined The specific OFDM symbol of other the five groups of remote radio nodes received in the period 4；In predetermined amount of time The specific OFDM symbol combining that 5 transmission are received by the 6th group of remote radio node in predetermined amount of time 5 Data, and be discarded in the specific of other the five groups of remote radio nodes received in predetermined amount of time 5 OFDM symbol；Transmitted in predetermined amount of time 6 by first group of remote radio node in predetermined amount of time 6 The data of the specific OFDM symbol combining received, and be discarded in receive in predetermined amount of time 6 other five The specific OFDM symbol of group remote radio node；The like.
As shown in FIG. 9, first group of remote radio node is transmitted in the scheduled time in predetermined amount of time 0 The combining data of the specific OFDM symbol received in section 0, by receive in predetermined amount of time 0 other five The specific OFDM symbol of group remote radio node is stored；Second group is transmitted in predetermined amount of time 1 to penetrate Frequency zooms out the combining data for the specific OFDM symbol that node is received in predetermined amount of time 0, is discarded in predetermined The specific OFDM symbol for this six group node that period 1 receives；The 3rd group is transmitted in predetermined amount of time 2 The combining data for the specific OFDM symbol that remote radio node is received in predetermined amount of time 0, are discarded in pre- The specific OFDM symbol for this six group node that section of fixing time 2 is received；The 4th is transmitted in predetermined amount of time 3 The combining data for the specific OFDM symbol that group remote radio node is received in predetermined amount of time 0, are discarded in The specific OFDM symbol for this six group node that predetermined amount of time 3 is received；In the transmission of predetermined amount of time 4 the The combining data for the specific OFDM symbol that five groups of remote radio nodes are received in predetermined amount of time 0, are abandoned The specific OFDM symbol of this six group node received in predetermined amount of time 4；Transmitted in predetermined amount of time 5 The combining data for the specific OFDM symbol that 6th group of remote radio node is received in predetermined amount of time 0, lose Abandon the specific OFDM symbol of this six group node received in predetermined amount of time 5；Passed in predetermined amount of time 6 The combining number for the specific OFDM symbol that defeated first group of remote radio node is received in predetermined amount of time 6 According to by the specific OFDM symbol progress of other the five groups of remote radio nodes received in predetermined amount of time 6 Storage；Predetermined amount of time 7 transmit second group of remote radio node predetermined amount of time 7 receive it is specific The combining data of OFDM symbol, are discarded in the specific of this six group node that predetermined amount of time 7 is received OFDM symbol；The like.
In the embodiment of the present application, line delay is entered to remote radio node by using the mode of above-mentioned poll Processing and combining are sent, and can obtain the metrical information of more remote radio nodes, each poll week Phase is shorter compared to measurement period before, and being particularly suitable for use in needs the remote radio node for obtaining adjacent cell Metrical information scene.
Elaborate how remote radio node is grouped above, which period is every group need to When interior specific OFDM symbol is carrying out delay process so as to combining and is sending.It will be specifically described below How delay process and combining are carried out to one group of remote radio node.
In the embodiment of the present application, the data of every group of remote radio node can be sent by single antenna, It can be sent by multiple antennas (for example, double antenna).
, can be according to the side shown in Figure 10 for any group of remote radio node if sent by double antenna Formula carries out delay process.As shown in Figure 10, it is assumed that have n node, each penetrated by double antenna transmission Frequency zooms out the data of node, and the data of the same each antenna of remote radio node are carried out at same delay Reason, different radio frequency, which zooms out node, has different delays, i.e. T1, T2 ... Tn.
, can be according to as shown in figure 11 for any group of remote radio node if sent by single antenna Mode carries out delay process.In each predetermined amount of time, each logical antenna transmits one group of remote radio section Remote radio node in the data of point, every group of remote radio node has different delays, i.e. T1, T2…Tn。
In the embodiment of the present application, it can be blocked using zero padding and two kinds of delay process modes of cyclic shift. Zero padding truncation can be blocked by overall progress zero padding of at least one OFDM symbol.
Wherein, zero padding truncation mode be before at least one OFDM symbol most preceding cyclic prefix plus S zero, and remove last S of at least one OFDM symbol, wherein, in order that must not Same remote radio node has different delays, then for different remote radio nodes, S value Can be different.
In the embodiment of the present application, S length can be less than or equal to CP length, it is possible thereby to ensure to prolong When OFDM symbol integrality, it is to avoid systematic function caused by delay declines.
Cyclic shift processing mode is by the previous of each OFDM symbol of at least one OFDM symbol Part is positioned over after the rear portion of the OFDM symbol, and the front portion of OFDM symbol can be A CP part, CP whole, or CP whole and part OFDM sampling points.
For example, as shown in figure 12, it is assumed that carry out zero padding truncation to an OFDM symbol, to section The OFDM symbol of point 1 is not processed, to mending one before the cyclic shift of the OFDM symbol of node 2 Zero, and by the OFDM symbol of node 2, last position is blocked, that is, is removed, and the OFDM of node 3 is accorded with Number cyclic shift before mend two zero, and last two of the OFDM symbol of node 2 are blocked, successively Analogize, the extreme length of node zero padding can be not more than CP length.
For example, as shown in figure 13, it is assumed that carry out zero padding truncation to two OFDM symbols, to section Two OFDM symbols of point 1 are not processed, to two previous OFDM of OFDM symbol of node 2 Cyclic shift before mend one zero, and latter last position of OFDM symbol of node 2 is blocked, i.e., Remove, to mending two before the cyclic shift of the previous OFDM symbol of two OFDM symbols of node 3 Individual zero, and last two of latter OFDM symbol of node 2 are blocked, the like, node is mended Zero extreme length can be not more than CP length.
Cyclic shift processing is in the case where being kept for the time shared by OFDM symbol constant, by the OFDM The sampling point of the front portion of symbol is placed on behind rear portion sampling point.
For example, as shown in figure 14, the OFDM symbol to node 1 is not processed, by the OFDM of node 2 The previous positions of CP of symbol are positioned over behind the OFDM symbol, by the OFDM symbol of node 3 CP front twos are positioned over behind the OFDM symbol, the like.Wherein, that displacement can be OFDM The cyclic prefix of symbol or the cyclic prefix of OFDM symbol and the data sample of OFDM symbol.
In the embodiment of the present application, zero padding truncation and cyclic shift processing can be simultaneously in one group of radio frequencies Zoom out in node and use.For example, as shown in figure 15, the OFDM symbol to node 1 is not processed, The previous positions of the CP of the OFDM symbol of node 2 are positioned over behind the OFDM symbol, to node 3 OFDM symbol CP before mend two zero, and last two of the OFDM symbol are blocked.
In the embodiment of the present application, handled or zero padding truncation by using cyclic shift, it is possible to achieve Up processing unit obtains the information of multiple remote radio nodes, and can be only to part OFDM symbol Enter line delay combining processing, other OFDM symbols are unaffected.
In addition, carrying out delay process by way of cyclic shift, running time-frequency resource can be extended, for example, It can make running time-frequency resource extension will by about one time.
In the embodiment of the present application, delay process can in itself be performed by each remote radio node, then The OFDM symbol of delay process is sent to combiner unit, by combiner unit to each remote radio node OFDM symbol after delay process is combined processing, is sent to up processing unit.
Or, delay process can be performed by combiner unit, and combiner unit is to each remote radio node OFDM symbol carries out delay process, and each OFDM symbol after delay process is combined into processing, It is sent to up processing unit.
In the embodiment of the present application, up processing unit can be BBU.
In the embodiment of the present application, the OFDM symbol after combining is handled is sent to up processing unit Afterwards, up processing unit can match each according to the delay of remote radio node on delay profile The corresponding multipath cluster of node, to obtain the signal of each node transmission.For example, as shown in figure 16, wherein, Δ τ represents delay, and the multiple before it represents different delays.
The signal that up processing unit can be sent according to each node, obtains the measurement amount of each node, Such as Reference Signal Received Power (Reference Signal Receiving Power, RSRP), signal with Interference-to-noise ratio (Signal to Interference plus Noise Ratio, SINR) and arrival time (Time Of arrival, TOA) etc..Specifically, up processing unit can be according to time-frequency domain power statistic method RSRP and SINR are obtained, TOA is obtained by music algorithms.
Then functional unit can realize correlation function according to each measurement amount.For example, functional unit can be with RRU coverage is determined and to terminal positioning according to RSRP and TOA, according to RSRP and SINR Obtain specially figure distribution etc..
Combination Fig. 1 to Figure 16 describes the method for transmitting signals according to the embodiment of the present application above.Below The communication equipment according to the embodiment of the present application is described with reference to Figure 17 to Figure 20.
Figure 17 is the schematic block diagram of the communication equipment 400 according to the embodiment of the present application.As shown in figure 16, The communication equipment 400 includes：Acquisition module 410, for obtaining by the first remote radio node and needing At least one the first orthogonal frequency division multiplex OFDM symbol to be sent to up processing unit；Sending module 420, send at least one second OFDM symbol；At least one second OFDM symbol is in time domain On before at least one first OFDM symbol plus S zero and remove this at least one first at this What last S of OFDM symbol obtained, S is the integer more than or equal to 1；Or, this at least one Second OFDM symbol be by this at least one first OFDM symbol each OFDM symbol in time domain On be divided into front portion and rear portion, and the front portion is positioned over what is obtained after the rear portion.
Alternatively, the communication equipment 400 is applied to Long Term Evolution LTE system, first OFDM symbol For the OFDM symbol where detection reference signal SRS.
Alternatively, specific OFDM symbol of first OFDM symbol for carrying within a predetermined period of time, Wherein, existence time interval between each two predetermined amount of time.
Alternatively, the acquisition module 410 is additionally operable to：The first predetermined amount of time receive by this first After first OFDM symbol of remote radio node, continuous M-1 predetermined amount of time after discarding Interior first OFDM symbol by the first remote radio node, wherein, the M is remote radio The quantity of node group, the M remote radio node group has the configuration of identical transmitting antenna, and the M is Integer more than or equal to 2.
Alternatively, the sending module 420 specifically for：
Send at least one second OFDM symbol in the second predetermined amount of time, wherein, this second make a reservation for Period is different from first predetermined amount of time.
Alternatively, the S is less than or equal to the length of the cyclic prefix of first OFDM symbol.
Alternatively, the communication equipment 400 is the first remote radio node, and the sending module 420 is specifically used In：
By single antenna, by this, at least one second OFDM symbol is sent to combiner unit.
Alternatively, the communication equipment 400 is combiner unit；The acquisition module 410, which is additionally operable to obtain, to be passed through Second remote radio node and need send to the up processing unit at least one the 3rd OFDM accord with Number；The sending module 420 is additionally operable to send at least one the 4th OFDM symbol；Wherein, this at least one Individual second OFDM symbol and at least one the 4th OFDM symbol are to be sent to this in the way of combining Up processing unit, wherein, at least one second OFDM symbol and at least one the 4th OFDM Symbol has different delays；At least one the 4th OFDM symbol be in time domain at this at least one Add R zero before 3rd OFDM symbol and remove the last of at least one the 3rd OFDM symbol R obtain, and R is the integer more than or equal to 1；Or, at least one the 4th OFDM symbol is By this at least one the 4th OFDM symbol each OFDM symbol be divided into time domain front portion and Rear portion, and the front portion is positioned over what is obtained after the rear portion.
It is can correspond to according to the communication equipment 400 of the embodiment of the present application in the method for the embodiment of the present application Each unit in remote radio node or combiner unit, also, communication equipment is module and other above-mentioned behaviour Make and/or function is respectively in order to realize the corresponding flow of the method 100 in Fig. 2, for sake of simplicity, herein not Repeat again.
Figure 18 is the schematic block diagram of the communication equipment 500 according to the embodiment of the present application.As shown in figure 18, The communication equipment 500 includes：Determining module 510, for determining to need the radio frequency for obtaining metrical information to draw The quantity of remote node；Grouping module 520, the remote radio section for obtaining metrical information according to the needs The quantity of point, is grouped to the remote radio node that the needs obtain metrical information；Configuration module 530, The predetermined amount of time different for the remote radio node group configuration for the identical transmitting antenna of use, for this At least two remote radio nodes in remote radio node group send at least one each self-corresponding OFDM Symbol, at least one each self-corresponding OFDM symbol of at least two remote radios node has not co-extensive When.
Alternatively, the configuration module 530 is additionally operable to：For at least one radio frequency of the remote radio node group Zoom out that corresponding at least one OFDM symbol configuration of each remote radio node in node is following to be handled：Should Processing is included in time domain before at least one OFDM symbol plus at least one zero and removes this extremely At least one of a few OFDM symbol, wherein, the digit for plus zero is identical with the digits long removed； Or, each OFDM symbol at least one OFDM symbol is divided into front portion in time domain And rear portion, and the front portion is positioned over what is obtained after the rear portion.
Alternatively, the determining module 510 is additionally operable to：It is determined that needing to obtain the remote radio section of metrical information The quantity and number of transmission antennas of point affiliated subdistrict；The grouping module 520 specifically for：As needed Obtain metrical information remote radio node quantity, the quantity of the remote radio node affiliated subdistrict and The transmitting antenna data, are grouped to the remote radio node that the needs obtain metrical information；The configuration Module 530 is additionally operable to：It is used to send each radio frequency drawing for each remote radio node group configuration single antenna The corresponding OFDM symbol of remote node.
Alternatively, the communication equipment 500 is applied to Long Term Evolution LTE system, and the OFDM symbol is OFDM symbol where detection reference signal SRS.
It is can correspond to according to the communication equipment 500 of the embodiment of the present application in the method for the embodiment of the present application Up processing unit, also, each unit in communication equipment is module and other above-mentioned operation and/or functions Respectively in order to realize the corresponding flow of the method 300 in Fig. 5, for sake of simplicity, will not be repeated here.
Figure 19 is the schematic block diagram of the communication equipment 600 according to the embodiment of the present application.As shown in figure 19, The communication equipment 600 includes processor 610 and transceiver 620.Processor 610 and the phase of transceiver 620 Even, alternatively, the equipment 500 also includes memory 630, and memory 630 is connected with processor 610, Still optionally further, the equipment 600 includes bus system 640.Wherein, processor 610, memory 630 can be connected with transceiver 620 by bus system 640, and the memory 630 can be used for storage Instruction, the processor 510 is used for the instruction for performing the memory 530 storage.
Processor 610 is obtained by the first remote radio node and needed to up place by transceiver 620 Manage at least one first orthogonal frequency division multiplex OFDM symbol that unit is sent；Processor 610 passes through transmitting-receiving Device 620 sends at least one second OFDM symbol；At least one second OFDM symbol be when Before at least one first OFDM symbol plus S zero and remove this at least one first at this on domain What last S of OFDM symbol obtained, S is the integer more than or equal to 1；Or, this at least one Second OFDM symbol be by this at least one first OFDM symbol each OFDM symbol in time domain On be divided into front portion and rear portion, and the front portion is positioned over what is obtained after the rear portion.
Alternatively, the communication equipment 600 is applied to Long Term Evolution LTE system, first OFDM symbol For the OFDM symbol where detection reference signal SRS.
Alternatively, specific OFDM symbol of first OFDM symbol for carrying within a predetermined period of time, Wherein, existence time interval between each two predetermined amount of time.
Alternatively, the processor 610 by by the predetermined amount of time of transceiver 620 first receive through After first OFDM symbol for crossing the first remote radio node, continuous M-1 is individual pre- after discarding By first OFDM symbol of the first remote radio node in section of fixing time, wherein, the M is The quantity of remote radio node group, the M remote radio node group has the configuration of identical transmitting antenna, The M is the integer more than or equal to 2.
Alternatively, the processor 610 by transceiver 620 the second predetermined amount of time send this at least one Individual second OFDM symbol, wherein, second predetermined amount of time is different from first predetermined amount of time.
Alternatively, the S is less than or equal to the length of the cyclic prefix of first OFDM symbol.
Alternatively, the communication equipment be the first remote radio node, the processor 610 by transceiver by By this, at least one second OFDM symbol is sent to combiner unit to single antenna.
Alternatively, the communication equipment 600 is combiner unit；The processor 610 is additionally operable to by transceiver 620 obtain by the second remote radio node and needing send to the up processing unit at least one the Three OFDM symbols, and send at least one the 4th OFDM symbol；Wherein, this at least one Two OFDM symbols and at least one the 4th OFDM symbol are that this is sent in the way of combining is up Processing unit, wherein, at least one second OFDM symbol and at least one the 4th OFDM are accorded with Number have different delays；At least one the 4th OFDM symbol be in time domain at this at least one Add R zero before three OFDM symbols and remove the last R of at least one the 3rd OFDM symbol What position was obtained, R is the integer more than or equal to 1；Or, at least one the 4th OFDM symbol be by Each OFDM symbol is divided into front portion with after in time domain at least one the 4th OFDM symbol A part, and the front portion is positioned over what is obtained after the rear portion.
It is can correspond to according to the communication equipment 600 of the embodiment of the present application in the method for the embodiment of the present application Each unit in remote radio node or combiner unit, also, communication equipment is module and other above-mentioned behaviour Make and/or function is respectively in order to realize the corresponding flow of the method 200 in Fig. 2, for sake of simplicity, herein not Repeat again.
Figure 20 is the schematic block diagram of the communication equipment 700 according to the embodiment of the present application.As shown in figure 20, The communication equipment 700 includes processor and transceiver.Processor 710 is connected with transceiver 720, optional Ground, the equipment 700 also includes memory 730, and memory 730 is connected with processor 710, further Alternatively, the equipment 700 includes bus system 740.Wherein, processor 710, memory 730 and receipts Sending out device 720 can be connected by bus system 740, and the memory 730 can be used for store instruction, should Processor 710 is used for the instruction for performing the memory 730 storage,
Processor 710 determines to need to obtain the quantity of the remote radio node of metrical information；According to the needs The quantity of the remote radio node of metrical information is obtained, the needs are obtained with the remote radio section of metrical information Point is grouped；To use the predetermined amount of time that the remote radio node group configuration of identical transmitting antenna is different, For in the remote radio node group at least two remote radio nodes send it is each it is self-corresponding at least one OFDM symbol, at least one each self-corresponding OFDM symbol of at least two remote radios node has Different delayed time.
Alternatively, processor 710 is every at least one remote radio node of the remote radio node group Corresponding at least one OFDM symbol configuration of individual remote radio node is following to be handled：When the processing is included in On domain before at least one OFDM symbol plus at least one zero and removes at least one OFDM At least one of symbol, wherein, the digit for plus zero is identical with the digits long removed；Or, by this extremely Each OFDM symbol is divided into front portion and rear portion in time domain in a few OFDM symbol, And the front portion is positioned over what is obtained after the rear portion.
Alternatively, processor 710 determines to need the remote radio node affiliated subdistrict of acquisition metrical information Quantity and number of transmission antennas；The remote radio node that this pair needs obtain metrical information is grouped, Including：The quantity of the remote radio node of metrical information is obtained as needed, belonging to the remote radio node The quantity of cell and the transmitting antenna data, enter to the remote radio node that the needs obtain metrical information Row packet；It is used to send each remote radio node pair for each remote radio node group configuration single antenna The OFDM symbol answered.
Alternatively, communication equipment 700 is applied to Long Term Evolution LTE system, and the OFDM symbol is spy The OFDM symbol surveyed where reference signal SRS.
It is can correspond to according to the communication equipment 700 of the embodiment of the present application in the method for the embodiment of the present application Up processing unit, also, each unit in communication equipment is module and other above-mentioned operation and/or functions Respectively in order to realize the corresponding flow of the method 300 in Fig. 5, for sake of simplicity, will not be repeated here.
In the embodiment of the present application, processor 610 or 710 can be central processing unit (English：central Processing unit, CPU), network processing unit (network processor, NP) or CPU and NP combination.Processor 610 can further include hardware chip.Above-mentioned hardware chip can be special With integrated circuit (application-specific integrated circuit, ASIC), PLD (programmable logic device, PLD) or its combination.Above-mentioned PLD can be that complexity can be compiled Journey logical device (complex programmable logic device, abbreviation：CPLD), field-programmable Logic gate array (field-programmable gate array, FPGA), GAL (generic Array logic, GAL) or its any combination.
The bus system 640 or 740 can also include power bus, control in addition to including data/address bus Bus and status signal bus in addition processed etc..For ease of representing, only bus system 640 is represented with a thick line in figure Or 740, it is not intended that only one bus or a type of bus.
Those of ordinary skill in the art are it is to be appreciated that with reference to each of the embodiments described herein description The unit and algorithm steps of example, can be with electronic hardware or the knot of computer software and electronic hardware Close to realize.These functions are performed with hardware or software mode actually, depending on the spy of technical scheme Fixed application and design constraint.Professional and technical personnel can use not Tongfang to each specific application Method realizes described function, but this realization is it is not considered that beyond the scope of this invention.
It is apparent to those skilled in the art that, it is for convenience and simplicity of description, above-mentioned to retouch The specific work process of system, device and the unit stated, may be referred to the correspondence in preceding method embodiment Process, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, device and Method, can be realized by another way.For example, device embodiment described above is only to show Meaning property, for example, the division of the unit, only a kind of division of logic function can when actually realizing To there is other dividing mode, such as multiple units or component can combine or be desirably integrated into another System, or some features can be ignored, or not perform.It is another, it is shown or discussed each other Coupling or direct-coupling or communication connection can be the INDIRECT COUPLING of device or unit by some interfaces Or communication connection, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, make It can be for the part that unit is shown or may not be physical location, you can with positioned at a place, Or can also be distributed on multiple NEs.Can select according to the actual needs part therein or Person's whole units realize the purpose of this embodiment scheme.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, Can also be that unit is individually physically present, can also two or more units be integrated in a list In member.
If the function is realized using in the form of SFU software functional unit and as independent production marketing or used When, it can be stored in a computer read/write memory medium.Understood based on such, it is of the invention The part or the part of the technical scheme that technical scheme substantially contributes to prior art in other words can To be embodied in the form of software product, the computer software product is stored in a storage medium, Including some instructions to cause a computer equipment (can be personal computer, server, or Network equipment etc.) perform all or part of step of each of the invention embodiment methods described.And it is foregoing Storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can With the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to In this, any one skilled in the art the invention discloses technical scope in, can be easily Expect change or replacement, should all be included within the scope of the present invention.Therefore, protection of the invention Scope described should be defined by scope of the claims.

Claims (24)

1. a kind of method for transmitting signals, it is characterised in that including：
Obtain by the first remote radio node and need to up processing unit send at least one first Orthogonal frequency division multiplex OFDM symbol；
Send at least one second OFDM symbol；
At least one described second OFDM symbol is at least one described the first OFDM in time domain S zero and last S of removal at least one first OFDM symbol is added to obtain before symbol , S is the integer more than or equal to 1；Or, at least one described second OFDM symbol is will be described Each OFDM symbol is divided into front portion and latter in time domain at least one first OFDM symbol Part, and the front portion is positioned over what is obtained after the rear portion.
2. according to the method described in claim 1, it is characterised in that methods described is applied to Long Term Evolution LTE system, first OFDM symbol is the OFDM symbol where detection reference signal SRS.
3. method according to claim 1 or 2, it is characterised in that the first OFDM symbols Number for carrying specific OFDM symbol within a predetermined period of time, wherein, between each two predetermined amount of time Existence time interval.
4. method according to claim 3, it is characterised in that methods described also includes：
The first OFDM by the first remote radio node is received in the first predetermined amount of time After symbol, pass through the first remote radio node in continuous M-1 predetermined amount of time after discarding First OFDM symbol, wherein, the M be remote radio node group quantity, the M Individual remote radio node group has the configuration of identical transmitting antenna, and the M is the integer more than or equal to 2.
5. method according to claim 4, it is characterised in that send at least one the 2nd OFDM Symbol, including：
At least one described second OFDM symbol is sent in the second predetermined amount of time, wherein, described second Predetermined amount of time is different from first predetermined amount of time.
6. method according to any one of claim 1 to 5, it is characterised in that the S is less than Equal to the length of the cyclic prefix of first OFDM symbol.
7. method according to any one of claim 1 to 6, it is characterised in that methods described Performed by the first remote radio node, described at least one second OFDM symbol of transmission, including：
At least one described second OFDM symbol is sent to by combiner unit by single antenna.
8. method according to any one of claim 1 to 6, it is characterised in that
Methods described is performed by combiner unit, and methods described also includes：
Obtain by the second remote radio node and need to send at least one of the up processing unit 3rd OFDM symbol；
Send at least one the 4th OFDM symbol；
Wherein, at least one described second OFDM symbol and at least one described the 4th OFDM symbol It is that the up processing unit is sent in the way of combining, wherein, at least one described the 2nd OFDM Symbol and at least one described the 4th OFDM symbol have different delays；
At least one described the 4th OFDM symbol is at least one described the 3rd OFDM in time domain R zero and last R of removal at least one the 3rd OFDM symbol is added to obtain before symbol , R is the integer more than or equal to 1；Or, at least one described the 4th OFDM symbol is will be described Each OFDM symbol is divided into front portion and latter in time domain at least one the 4th OFDM symbol Part, and the front portion is positioned over what is obtained after the rear portion.
9. a kind of method for transmitting signals, it is characterised in that methods described is performed by up processing unit, bag Include：
It is determined that needing to obtain the quantity of the remote radio node of metrical information；
According to the quantity for needing to obtain the remote radio node of metrical information, need to obtain survey to described The remote radio node of amount information is grouped；
To use the predetermined amount of time that the remote radio node group configuration of identical transmitting antenna is different, for institute State at least two remote radio nodes in remote radio node group send it is each it is self-corresponding at least one OFDM symbol, each self-corresponding at least one OFDM symbol tool of at least two remote radios node There is different delayed time.
10. method according to claim 9, it is characterised in that methods described also includes：
For each remote radio node pair at least one remote radio node of the remote radio node group The following processing of at least one OFDM symbol configuration answered：
The processing be included in time domain before at least one described OFDM symbol plus at least one zero And at least one of at least one OFDM symbol described in removing, wherein, the digit for plus zero and removal Digits long is identical；Or, will at least one described OFDM symbol each OFDM symbol when It is divided into front portion and rear portion on domain, and the front portion is positioned over after the rear portion Obtain.
11. the method according to claim 9 or 10, it is characterised in that methods described also includes：
It is determined that needing to obtain the quantity and transmitting antenna number of the remote radio node affiliated subdistrict of metrical information Amount；
It is described that the remote radio node for needing to obtain metrical information is grouped, including：
The quantity of the remote radio node of metrical information is obtained as needed, belonging to the remote radio node The quantity of cell and the transmitting antenna data, to the remote radio section for needing to obtain metrical information Point is grouped；
Methods described also includes：It is used to send described each for each remote radio node group configuration single antenna The corresponding OFDM symbol of remote radio node.
12. the method according to any one of claim 9 to 11, it is characterised in that methods described Applied to Long Term Evolution LTE system, the OFDM symbol is where detection reference signal SRS OFDM symbol.
13. a kind of communication equipment, it is characterised in that including：
Acquisition module, for obtaining by the first remote radio node and needing to send to up processing unit At least one first orthogonal frequency division multiplex OFDM symbol；
Sending module, sends at least one second OFDM symbol；
At least one described second OFDM symbol is at least one described the first OFDM in time domain S zero and last S of removal at least one first OFDM symbol is added to obtain before symbol , S is the integer more than or equal to 1；Or, at least one described second OFDM symbol is will be described Each OFDM symbol is divided into front portion and latter in time domain at least one first OFDM symbol Part, and the front portion is positioned over what is obtained after the rear portion.
14. communication equipment according to claim 13, it is characterised in that the communication equipment application In Long Term Evolution LTE system, first OFDM symbol is where detection reference signal SRS OFDM symbol.
15. the communication equipment according to claim 13 or 14, it is characterised in that the first OFDM Symbol is carrying specific OFDM symbol within a predetermined period of time, wherein, each two predetermined amount of time it Between existence time interval.
16. communication equipment according to claim 15, it is characterised in that the acquisition module is also used In：
The first OFDM by the first remote radio node is received in the first predetermined amount of time After symbol, pass through the first remote radio node in continuous M-1 predetermined amount of time after discarding First OFDM symbol, wherein, the M be remote radio node group quantity, the M Individual remote radio node group has the configuration of identical transmitting antenna, and the M is the integer more than or equal to 2.
17. communication equipment according to claim 16, it is characterised in that the sending module is specific For：
At least one described second OFDM symbol is sent in the second predetermined amount of time, wherein, described second Predetermined amount of time is different from first predetermined amount of time.
18. the communication equipment according to any one of claim 13 to 17, it is characterised in that institute State length of the S less than or equal to the cyclic prefix of first OFDM symbol.
19. the communication equipment according to any one of claim 13 to 18, it is characterised in that institute Communication equipment is stated for the first remote radio node, the sending module specifically for：
At least one described second OFDM symbol is sent to by combiner unit by single antenna.
20. the communication equipment according to any one of claim 13 to 18, the communication equipment is Combiner unit；
The acquisition module is additionally operable to obtain by the second remote radio node and needs to send to described up At least one the 3rd OFDM symbol of processing unit；
The sending module is additionally operable to send at least one the 4th OFDM symbol；
Wherein, at least one described second OFDM symbol and at least one described the 4th OFDM symbol It is that the up processing unit is sent in the way of combining, wherein, at least one described the 2nd OFDM Symbol and at least one described the 4th OFDM symbol have different delays；
At least one described the 4th OFDM symbol is at least one described the 3rd OFDM in time domain R zero and last R of removal at least one the 3rd OFDM symbol is added to obtain before symbol , R is the integer more than or equal to 1；Or, at least one described the 4th OFDM symbol is will be described Each OFDM symbol is divided into front portion and latter in time domain at least one the 4th OFDM symbol Part, and the front portion is positioned over what is obtained after the rear portion.
21. a kind of communication equipment, it is characterised in that including：
Determining module, for determining to need to obtain the quantity of the remote radio node of metrical information；
Grouping module is right for according to the quantity for needing to obtain the remote radio node of metrical information The remote radio node for needing to obtain metrical information is grouped；
Configuration module, different for the remote radio node group configuration for the identical transmitting antenna of use is predetermined Period, respective correspondence is sent at least two remote radio nodes in the remote radio node group At least one OFDM symbol, at least two remote radios node it is each it is self-corresponding at least one OFDM symbol has different delayed time.
22. communication equipment according to claim 21, it is characterised in that the configuration module is also used In：
For each remote radio node pair at least one remote radio node of the remote radio node group The following processing of at least one OFDM symbol configuration answered：
The processing be included in time domain before at least one described OFDM symbol plus at least one zero And at least one of at least one OFDM symbol described in removing, wherein, the digit for plus zero and removal Digits long is identical；Or, will at least one described OFDM symbol each OFDM symbol when It is divided into front portion and rear portion on domain, and the front portion is positioned over after the rear portion Obtain.
23. the communication equipment according to claim 21 or 22, it is characterised in that
The determining module is additionally operable to：It is determined that needing to obtain the remote radio node affiliated subdistrict of metrical information Quantity and number of transmission antennas；
The grouping module specifically for：The quantity of the remote radio node of metrical information is obtained as needed, The quantity of the remote radio node affiliated subdistrict and the transmitting antenna data, need to obtain to described The remote radio node of metrical information is grouped；
The configuration module is additionally operable to：It is used to send described for each remote radio node group configuration single antenna The corresponding OFDM symbol of each remote radio node.
24. the communication equipment according to any one of claim 21 to 23, it is characterised in that institute Communication equipment is stated applied to Long Term Evolution LTE system, the OFDM symbol is detection reference signal SRS The OFDM symbol at place.
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