CN109561501A - Duplex data transfer method and base station and terminal - Google Patents
Duplex data transfer method and base station and terminal Download PDFInfo
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- CN109561501A CN109561501A CN201710875180.1A CN201710875180A CN109561501A CN 109561501 A CN109561501 A CN 109561501A CN 201710875180 A CN201710875180 A CN 201710875180A CN 109561501 A CN109561501 A CN 109561501A
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- band
- downlink
- uplink
- frequency
- centre frequency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
-
- 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
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
Abstract
The application proposes a kind of duplex data transfer method and base station and terminal, is related to wireless communication technology field.A kind of duplex data transfer method that the application proposes includes: base station by modulate downstream data in band downlink, generates downlink signal, wherein the centre frequency of band downlink is identical as the centre frequency for the predetermined band for distributing to user；Base station obtains uplink signal in uplink band, wherein the centre frequency of uplink band is identical as the centre frequency for the predetermined band for distributing to user；The sum of uplink band and band downlink are less than or equal to predetermined band, and uplink band and band downlink do not overlap.By such method, base station and terminal are in interactive process, the centre frequency of uplink and downlink frequency range is identical as the centre frequency for the predetermined band for distributing to user respectively, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, it can be convenient for distributing the frequency spectrum resource of non-equivalent for non-symmetrical service, improve the utilization rate of frequency spectrum resource.
Description
Technical field
This application involves wireless communication technology field, especially a kind of duplex data transfer method and base station and terminal.
Background technique
FDD (Frequency Division Duplexing, frequency division duplex) and TDD (Time Division
Duplexing, time division duplex) it is most important duplex mode employed in wireless communication system.
In working principle, FDD is received and transmitted on two symmetrical frequency channels of separation.FDD must be adopted
With pairs of frequency, carry out differentiating uplink and downlink link by frequency, unidirectional resource is continuous in time.The TDD used time
Between to separate send and receive channel, send and receive the carrying for using the different time-gap of same frequency carrier wave as channel,
Unidirectional resource be in time it is discontinuous, time resource is distributed in two directions.Some period is by base
Station sends a signal to mobile station, and the time in addition sends a signal to base station by mobile station, must cooperate between base station and mobile station
It unanimously could work well.
In future broadband wireless communication systems (such as 5G), the performance indicator such as time delay, frequency spectrum utilization rate etc. of signal transmission is proposed
Requirements at the higher level, also have higher requirement the performance of duplex transmission.
Summary of the invention
Inventors have found that under TDD mode, due to DL (DownLink, downlink)/UL (UpLink, uplink) nothing
Method is concurrent, can only be transmitted on defined time slot, to lead to the problem of due to waiting bring time delay to increase.
Though FDD can more preferably solve delay problem, when supporting symmetrical service, the frequency spectrum of uplink and downlink can be made full use of,
When supporting non-symmetrical service, the availability of frequency spectrum will be substantially reduced.
The purpose of the application is to improve the availability of frequency spectrum of non-symmetrical service uplink and downlink signals concurrent transmission.
According to the one aspect of the application, a kind of duplex data transfer method is proposed, comprising: base station is by modulate downstream data
In band downlink, downlink signal is generated, wherein the center frequency of the centre frequency of band downlink and the predetermined band for distributing to user
Rate is identical；Base station obtains uplink signal in uplink band, wherein the centre frequency of uplink band and the predetermined frequency for distributing to user
The centre frequency of section is identical；The sum of uplink band and band downlink are less than or equal to predetermined band, and uplink band and band downlink
It does not overlap.
Optionally, uplink band is located at the middle position of predetermined band, and band downlink is located at the two sides of predetermined band.
Optionally, band downlink is located at the middle position of predetermined band, and uplink band is located at the two sides of predetermined band.
Optionally, uplink signal and downlink signal occupy whole time-domain resources of respective frequency domain respectively.
It optionally, include protection bandwidth between uplink band and band downlink.
Optionally, further includes: the first dual-mode switching command is sent to terminal, so that terminal determines configurating downlink frequency
Section, band downlink are identical with the centre frequency of predetermined band.
Optionally, the second dual-mode switching command is sent to terminal, so that terminal determines configurating downlink frequency range and uplink
Frequency range is symmetrical centered on the centre frequency of predetermined band.
Optionally, third dual-mode switching command is sent to terminal, so that terminal determines by the way of time division duplex
Carry out uplink and downlink signals transmission.
It optionally, include that predetermined band indicates information in the first dual-mode switching command.
It optionally, include uplink band bandwidth instruction information and/or band downlink band in the first dual-mode switching command
Width instruction information.
Optionally, base station adjusts uplink band bandwidth and/or band downlink band according to uplink and downlink data payload situation in real time
Width, and terminal is sent to by the first dual-mode switching command.
According to further aspect of the application, a kind of duplex data transfer method is proposed, comprising: terminal is by upstream data tune
It is formed on uplink band, generates uplink signal, wherein the center of the centre frequency of uplink band and the predetermined band for distributing to user
Frequency is identical；Terminal obtains downlink signal in band downlink, wherein the centre frequency of band downlink with distribute to the predetermined of user
The centre frequency of frequency range is identical；The sum of uplink band and band downlink are less than or equal to predetermined band, and uplink band and downlink frequency
Section does not overlap.
Optionally, uplink band is located at the middle position of predetermined band, and band downlink is located at the two sides of predetermined band.
Optionally, band downlink is located at the middle position of predetermined band, and uplink band is located at the two sides of predetermined band.
Optionally, uplink signal and downlink signal occupy whole time-domain resources of respective frequency domain respectively.
It optionally, include protection bandwidth between uplink band and band downlink.
Optionally, further includes: configurating downlink frequency range, downlink are determined according to the first dual-mode switching command from base station
Frequency range is identical with the centre frequency of predetermined band.
Optionally, further includes: configurating downlink frequency range and upper is determined according to the second dual-mode switching command from base station
Line frequency section is symmetrical centered on the centre frequency of predetermined band.
Optionally, further includes: the side for using time division duplex is determined according to the third dual-mode switching command from base station
Formula carries out uplink and downlink signals transmission.
Optionally, include that predetermined band indicates information in the first dual-mode switching command, indicate to believe according to predetermined band
It ceases and determines predetermined band.
It optionally, include uplink band bandwidth instruction information and/or band downlink band in the first dual-mode switching command
Wide instruction information indicates that information and/or band downlink bandwidth instruction information calculate uplink band under according to uplink band bandwidth
Line frequency section.
Optionally, further includes: terminal is in discontinuous bandwidth using the detection of time-multiplexed mode transmission channel with reference to letter
Number SRS, demodulated reference signal DMRS, Physical Uplink Shared Channel PUSCH information.
By such method, base station and terminal be in interactive process, the centre frequency of uplink and downlink frequency range respectively with distribution
It is identical to the centre frequency of the predetermined band of user, it, can be convenient for being to realize the non-mutually symmetrical with distribution of uplink and downlink signals
Non-symmetrical service distributes the frequency spectrum resource of non-equivalent, improves the utilization rate of frequency spectrum resource.
According to the another aspect of the application, a kind of base station is proposed, comprising: downlink signal generation unit is used for downlink
Data are modulated to band downlink, generate downlink signal, wherein the centre frequency of band downlink and the predetermined band for distributing to user
Centre frequency it is identical；Uplink signal acquiring unit, for obtaining uplink signal in uplink band, wherein in uplink band
Frequency of heart is identical as the centre frequency for the predetermined band for distributing to user；The sum of uplink band and band downlink are less than or equal to predetermined
Frequency range, and uplink band and band downlink do not overlap.
According to another aspect of the application, a kind of base station, including memory are proposed；And it is coupled to the processing of memory
Device, processor are configured as any one the duplex data transfer side being mentioned above based on the instruction execution for being stored in memory
Step performed by base station in method.
Such base station during with terminal interaction, the centre frequency of uplink and downlink frequency range respectively with distribute to the pre- of user
The centre frequency for determining frequency range is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for being non-symmetrical service
The frequency spectrum resource for distributing non-equivalent improves the utilization rate of frequency spectrum resource.
According to the application another aspect, propose a kind of terminal, comprising: uplink signal generation unit, for by
Row data are modulated to uplink band, generate uplink signal, wherein the centre frequency of uplink band and the predetermined frequency for distributing to user
The centre frequency of section is identical；Downlink signal acquiring unit, for obtaining downlink signal in band downlink, wherein band downlink
Centre frequency is identical as the centre frequency for the predetermined band for distributing to user；The sum of uplink band and band downlink are less than or equal to pre-
Determine frequency range, and uplink band and band downlink do not overlap.
According to the one aspect of the application, a kind of terminal is proposed, comprising: memory；And it is coupled to memory
Processor, processor are configured as realizing any one the duplexing number being mentioned above based on the instruction execution for being stored in memory
According to step performed by terminal in transmission method.
Such terminal in the interactive process of base station, the centre frequency of uplink and downlink frequency range respectively with distribute to the pre- of user
The centre frequency for determining frequency range is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for being non-symmetrical service
The frequency spectrum resource for distributing non-equivalent improves the utilization rate of frequency spectrum resource.
In terms of according to the another one of the application, proposes a kind of computer readable storage medium, be stored thereon with calculating
Machine program instruction realizes the step for any one the duplex data transfer method being mentioned above when the instruction is executed by processor
Suddenly.
Such computer readable storage medium by executing instruction thereon, the centre frequency of uplink and downlink frequency range respectively with
The centre frequency for distributing to the predetermined band of user is identical, thus realize the non-mutually symmetrical with distribution of uplink and downlink signals, it can be just
In the frequency spectrum resource for distributing non-equivalent for non-symmetrical service, the utilization rate of frequency spectrum resource is improved.
In addition, according to the one aspect of the application, it is also proposed that a kind of duplex data transfer system, comprising: be mentioned above
Any one base station and any one terminal for being mentioned above.
In such duplex data transfer system, the centre frequency of uplink and downlink frequency range respectively with the predetermined frequency of distributing to user
The centre frequency of section is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for distributing for non-symmetrical service
The frequency spectrum resource of non-equivalent improves the utilization rate of frequency spectrum resource.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the flow chart of one embodiment of the duplex data transfer method of the application.
Fig. 2A is one embodiment schematic diagram of the frequency spectrum distribution in the duplex data transfer method of the application.
Fig. 2 B is another embodiment schematic diagram of the frequency spectrum distribution in the duplex data transfer method of the application.
Fig. 3 is the flow chart of another embodiment of the duplex data transfer method of the application.
Fig. 4 is the schematic diagram of one embodiment of the base station of the application.
Fig. 5 is the schematic diagram of one embodiment of the terminal of the application.
Fig. 6 is the schematic diagram of the terminal of the application or another embodiment of base station.
Fig. 7 is the schematic diagram of the terminal of the application or another embodiment of base station.
Fig. 8 is the schematic diagram of one embodiment of the duplex data transfer system of the application.
Fig. 9 A is the signaling schematic diagram of the one embodiment for accounting for frequency range in the duplex data transfer system of the application.
Fig. 9 B is the schematic diagram for another embodiment that signaling occupies frequency range in the duplex data transfer system of the application.
Specific embodiment
Below by drawings and examples, the technical solution of the application is described in further detail.
The flow chart of one embodiment of the duplex data transfer method of the application is as shown in Figure 1.
In a step 101, base station generates downlink signal, wherein band downlink by modulate downstream data in band downlink
Centre frequency is identical as the centre frequency for the predetermined band for distributing to user.
In a step 102, base station obtains uplink signal in uplink band, wherein the centre frequency and distribution of uplink band
It is identical to the centre frequency of the predetermined band of user.The sum of uplink band and band downlink are less than or equal to predetermined band, and uplink
Frequency range and band downlink do not overlap.
In one embodiment, as shown in Figure 2 A, 21 be central frequency range, and 22 be bilateral frequency range.During central dotted line is shown
Frequency of heart, the direction arrow f are frequency domain direction, and the direction arrow t is time domain direction.Central frequency range 21 can be uplink band, bilateral
Frequency range 22 is band downlink；Band downlink can also be used as by central frequency range 21, bilateral frequency range 22 is used as uplink band.
It in another embodiment, include protection frequency range 23, energy as shown in 2B, between central frequency range 21 and bilateral frequency range 22
Enough uplink and downlink signals is avoided to interfere, improves signal quality.
By such method, the centre frequency for the downlink signal that base station generates with distribute in the predetermined band of user
Frequency of heart is identical, and base station can receive the centre frequency and the centre frequency phase for the predetermined band for distributing to user for carrying out self terminal
Same uplink signal, thus realize the non-mutually symmetrical with distribution of uplink and downlink signals, it can be convenient for non-etc. for non-symmetrical service distribution
The frequency spectrum resource of amount improves the utilization rate of frequency spectrum resource.
The flow chart of another embodiment of the duplex data transfer method of the application is as shown in Figure 3.
In step 301, upstream data is modulated to uplink band by terminal, generates uplink signal, wherein uplink band
Centre frequency is identical as the centre frequency for the predetermined band for distributing to user.
In step 302, terminal obtains downlink signal in band downlink, wherein the centre frequency and distribution of band downlink
It is identical to the centre frequency of the predetermined band of user.Uplink and downlink signal can distribute frequency using the mode as shown in Fig. 2A, 2B
Spectrum resource.
By such method, the centre frequency for the uplink signal that terminal generates with distribute in the predetermined band of user
Frequency of heart is identical, and terminal can receive centre frequency and the centre frequency phase for the predetermined band for distributing to user from base station
Same downlink signal, thus realize the non-mutually symmetrical with distribution of uplink and downlink signals, it can be convenient for non-etc. for non-symmetrical service distribution
The frequency spectrum resource of amount improves the utilization rate of frequency spectrum resource.
In one embodiment, uplink band and band downlink realize the resource allocation on frequency domain, and uplink signal and
Downlink signal can occupy the whole time-domain resources for the frequency domain being assigned to, without being counted by the way of time division duplex
According to transmission, time delay is reduced.
In one embodiment, base station and terminal can configure various modes, carry out mould by transmission mode switching command
Formula switching.
In one embodiment, base station can send the first dual-mode switching command to terminal, and terminal receives first pair
After the instruction of work pattern switching, configurating downlink frequency range, band downlink are identical with the centre frequency of predetermined band, base station and terminal according to
The mode as shown in Figure 1,3 in embodiment carries out uplink and downlink signals transmission above.By such method, base station can configure end
End is carried out data transmission using the identical dual-mode of centre frequency of band downlink, band downlink and predetermined band, is improved
The utilization rate of frequency resource.Uplink and downlink frequency range and the identical design of the centre frequency of predetermined band can be to avoid in the prior arts
On the basis of change to synchronous process, be conducive to compatible existing network and the switching between different mode.
It in one embodiment, may include predetermined band instruction information, terminal root in the first dual-mode switching command
The frequency band for distributing to terminal is determined according to predetermined band instruction information, and determines uplink according to scheduled upstream and downstream bandwidth distribution condition
Frequency range and band downlink.
It in another embodiment, may include uplink band bandwidth instruction information in the first dual-mode switching command
And/or band downlink bandwidth indicates that information, terminal determine uplink band and band downlink according to the information.In one embodiment
In, base station adjusts uplink band bandwidth and/or band downlink bandwidth according to uplink and downlink data payload situation in real time, and passes through first
Dual-mode switching command is sent to terminal.For example, frequency range total bandwidth is 100M, the load of system uplink and downlink is 1:2, it is determined that on
Downlink bandwidth distinguishes 30M (each 15M of upper and lower ends), downlink bandwidth 60M, and protection bandwidth granularity is 10M (each 5M of upper and lower ends).
By such method, the self-adjusted block for realizing upstream and downstream bandwidth further improves the utilization rate sum number of frequency spectrum resource
According to efficiency of transmission.
In one embodiment, base station can send the second dual-mode switching command to terminal, and terminal is receiving second
After dual-mode switching command, determine that configurating downlink frequency range and uplink band are opposite centered on the centre frequency of predetermined band
Claim, is carried out data transmission using traditional fdd mode.In one embodiment, base station can also send third duplex to terminal
Pattern switching instruction, terminal carry out uplink and downlink letter after receiving third dual-mode switching command by the way of time division duplex
Number transmission.
By such method, base station can configurating terminal carried out data transmission using FDD and/or tdd mode, meet not
The demand of same network, different terminals and different application requirements.
In one embodiment, after base station sends the first dual-mode switching command to terminal, if terminal can not be supported
The identical dual-mode of the centre frequency of band downlink, band downlink and predetermined band, then can to base station feedback can not switch
Function message, or the handover success message that should be sent in the case where not being sent in handover success.Base station confirmation terminal can not be supported
The dual-mode then continues to use original mode, or other modes is selected to be transmitted.
By such method, it can be realized the support to existing terminal device, prevent from causing due to terminal performance issues
Communication mistake and information loss.
In one embodiment, base station can be using the method selectively dispatched, for different frequency ranges, using different
Duplex data transfer method carries out data transmission, the centre frequency including the uplink and downlink frequency range mentioned in the application respectively with distribution
The identical mode of centre frequency and traditional FDD, TDD mode to the predetermined band of user etc., to realize in different frequencies
Section, for the adaptive scheduling of each terminal, improve flexibility and adaptability, be conducive to promote and apply.
The schematic diagram of one embodiment of the base station of the application is as shown in Figure 4.Downlink signal generation unit 401 can will under
Row data are modulated to band downlink, generate downlink signal, wherein the centre frequency of band downlink and the predetermined frequency for distributing to user
The centre frequency of section is identical.Uplink signal acquiring unit 402 can obtain uplink signal in uplink band.The center of uplink band
Frequency is identical as the centre frequency for the predetermined band for distributing to user.The sum of uplink band and band downlink are less than or equal to predetermined frequency
Section, and uplink band and band downlink do not overlap.Uplink and downlink signal can distribute frequency using the mode as shown in Fig. 2A, 2B
Spectrum resource.
Such base station during with terminal interaction, the centre frequency of uplink and downlink frequency range respectively with distribute to the pre- of user
The centre frequency for determining frequency range is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for being non-symmetrical service
The frequency spectrum resource for distributing non-equivalent improves the utilization rate of frequency spectrum resource.
The structural schematic diagram of one embodiment of the application base station can be as shown in Figure 6.Base station includes memory 610 and place
Manage device 620.Wherein: memory 610 can be disk, flash memory or other any non-volatile memory mediums.Memory is for depositing
Store up the instruction executed in the above corresponding embodiment of duplex data transfer method by base station.Processor 620 is coupled to memory
610, it can be used as one or more integrated circuits to implement, such as microprocessor or microcontroller.The processor 620 is for holding
The instruction stored in line storage can be realized the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for being non-symmetrical service
The frequency spectrum resource for distributing non-equivalent improves the utilization rate of frequency spectrum resource.
It in one embodiment, can be as shown in fig. 7, base station 700 includes memory 710 and processor 720.Processor
720 are coupled to memory 710 by BUS bus 730.The base station 700 can also be connected to external storage by memory interface 740
Device 750 can also be connected to network or an other computer system to call external data by network interface 760
(not shown).It no longer describes in detail herein.
In this embodiment, it is instructed by memory stores data, then above-metioned instruction is handled by processor, can be realized
The non-mutually symmetrical with distribution of uplink and downlink signals can be convenient for distributing the frequency spectrum resource of non-equivalent for non-symmetrical service, improve frequency
The utilization rate of spectrum resource.
Fig. 5 is the schematic diagram of one embodiment of the terminal of the application.Uplink signal generation unit 501 can be by upper line number
According to uplink band is modulated to, uplink signal is generated, wherein the centre frequency of uplink band and the predetermined band of distributing to user
Centre frequency is identical.Downlink signal acquiring unit 502 obtains downlink signal in band downlink, wherein the center frequency of band downlink
Rate is identical as the centre frequency for the predetermined band for distributing to user.Uplink and downlink signal can be using the side as shown in Fig. 2A, 2B
Formula distributes frequency spectrum resource.
Such terminal in the interactive process of base station, the centre frequency of uplink and downlink frequency range respectively with distribute to the pre- of user
The centre frequency for determining frequency range is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for being non-symmetrical service
The frequency spectrum resource for distributing non-equivalent improves the utilization rate of frequency spectrum resource.
The structural schematic diagram of one embodiment of the terminal of the application can also be as shown in Figure 6.Terminal includes memory 610
With processor 620.Wherein: memory 610 can be disk, flash memory or other any non-volatile memory mediums.Memory is used
The instruction executed in the storage above corresponding embodiment of duplex data transfer method by terminal.Processor 620, which is coupled to, to be deposited
Reservoir 610 can be used as one or more integrated circuits to implement, such as microprocessor or microcontroller.The processor 620 is used
In executing the instruction stored in memory, the non-mutually symmetrical with distribution of uplink and downlink signals can be realized, can be convenient for being asymmetric
The frequency spectrum resource of the non-equivalent of traffic assignments, improves the utilization rate of frequency spectrum resource.
It in one embodiment, can be as shown in fig. 7, terminal 700 includes memory 710 and processor 720.Processor
720 are coupled to memory 710 by BUS bus 730.The terminal 700 can also be connected to external storage by memory interface 740
Device 750 can also be connected to network or an other computer system to call external data by network interface 760
(not shown).It no longer describes in detail herein.
In this embodiment, it is instructed by memory stores data, then above-metioned instruction is handled by processor, can be realized
The non-mutually symmetrical with distribution of uplink and downlink signals can be convenient for distributing the frequency spectrum resource of non-equivalent for non-symmetrical service, improve frequency
The utilization rate of spectrum resource.
In another embodiment, it is also proposed that a kind of computer readable storage medium is stored thereon with computer program and refers to
The step of enabling, the method in duplex data transfer method corresponding embodiment realized when which is executed by processor.In the art
Technical staff it should be appreciated that embodiments herein can provide as method, apparatus or computer program product.Therefore, the application
The form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used.Moreover,
The application can be used can be stored in the computer that one or more wherein includes computer usable program code with non-transient
The form for the computer program product implemented on medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.).
Fig. 8 is the schematic diagram of one embodiment of the duplex data transfer system of the application.It base station 81 can be for above
Any one base station mentioned；821~82n of terminal can be any one terminal being mentioned above, between terminal and base station
Data transmission can distribute frequency spectrum resource using the mode as shown in Fig. 2A, 2B.
In such duplex data transfer system, the centre frequency of uplink and downlink frequency range respectively with the predetermined frequency of distributing to user
The centre frequency of section is identical, to realize the non-mutually symmetrical with distribution of uplink and downlink signals, can be convenient for distributing for non-symmetrical service
The frequency spectrum resource of non-equivalent improves the utilization rate of frequency spectrum resource.
In one embodiment, user can be notified in MIB (Master Information Block, Master Information Block)
It is as follows using the duplex data transfer method proposed in the application:
Wherein, New-duplex ENUMERATED { true } is newly-increased signaling, as the first dual-mode switching command.
The terminal recognition signaling and execution pattern switching.It include predetermined band instruction letter in above-mentioned first dual-mode switching command
Breath, resource impact mark are calculated by the whole bandwidth for distributing to terminal.
By such method, pattern switching can be carried out with brief signaling, terminal and base station can be according to scheduled
Uplink and downlink frequency allocation strategy is communicated, and signaling consumption is small, reduces the burden of base station and communication network.
In another embodiment, notify user using the duplex data transfer method proposed in the application also in MIB
It can be as follows:
Wherein,
dl-bandwidth DL-bandwidth ENUMERATED{bw1,bw2,…}
ul-bandwidth UL-bandwidth ENUMERATED{bw1,bw2,…}
To increase signaling newly, as the first dual-mode switching command.It include uplink in the first dual-mode switching command
Frequency range indicates that information and band downlink indicate that information, resource need after receiving the resource identification of notice according to upper and lower line frequency
It converts the initial position of section.As shown in figure Fig. 9 A:
Assuming that 91 be uplink band, 92 be band downlink, and 93 be protection frequency range, according to PRB (Physical Resource
Block, Physical Resource Block) it identifies PRB N (N is nonnegative integer) and band downlink 92 and protects the PRB number of the occupancy of frequency range 93
Amount M (M is nonnegative integer) calculates PRB N+M.
By such method, uplink and downlink band information can be issued from base station to terminal, consequently facilitating carrying out adaptive
It adjusts, further increases the adaptability and resource utilization to actual demand.
Fig. 9 B is the schematic diagram for another embodiment that signaling occupies frequency range in the duplex data transfer system of the application.Its
In, vertical direction is frequency domain direction, and horizontal direction is time domain direction.In uplink band 92, TDM is used in discontinuous bandwidth
The mode of (Time-Division Multiplexing, be time-multiplexed) carry out SRS (Sounding Reference Signal,
Sounding Reference Signal), DMRS (Demodulation Reference Signal, demodulated reference signal) and PUSCH
The transmission of (Physical Uplink Shared Channel, Physical Uplink Shared Channel), specific timing can be matched by base station
It sets.From the angle for sending the optimization of signal power peak-to-average force ratio, UL data needs are transmitted in continuous frequency resource, discontinuous frequency
In the section following figure shown in dotted line, the mode that TDM can be used is uploaded.
Such duplex data transfer system also can make full use of time domain money on the basis of making full use of frequency domain resource
Source reduces time delay, reaches terminal and base station in the quick interaction of signaling and data.
The application is reference according to the method for the embodiment of the present application, the flow chart of equipment (system) and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
So far, the application is described in detail.In order to avoid covering the design of the application, it is public that this field institute is not described
The some details known.Those skilled in the art as described above, completely it can be appreciated how implementing technology disclosed herein
Scheme.
The present processes and device may be achieved in many ways.For example, can by software, hardware, firmware or
Person's software, hardware, firmware any combination realize the present processes and device.The step of for the method it is above-mentioned
Sequence is merely to be illustrated, and the step of the present processes is not limited to sequence described in detail above, unless with other sides
Formula illustrates.In addition, in some embodiments, the application can be also embodied as recording program in the recording medium, these
Program includes for realizing according to the machine readable instructions of the present processes.Thus, the application also covers storage for executing
According to the recording medium of the program of the present processes.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the application rather than its limitations；To the greatest extent
Pipe is described in detail the application referring to preferred embodiment, it should be understood by those ordinary skilled in the art that: still
It can modify to the specific embodiment of the application or some technical features can be equivalently replaced；Without departing from this Shen
Please technical solution spirit, should all cover in the claimed technical proposal scope of the application.
Claims (18)
1. a kind of duplex data transfer method, comprising:
Modulate downstream data in band downlink, is generated downlink signal by base station, wherein the centre frequency of the band downlink with point
The centre frequency of the predetermined band of provisioned user is identical；
The base station obtains uplink signal in uplink band, wherein the centre frequency of the uplink band and distributes to user's
The centre frequency of predetermined band is identical；
The sum of the uplink band and the band downlink be less than or equal to the predetermined band, and the uplink band and it is described under
Line frequency section does not overlap.
2. according to the method described in claim 1, wherein, the uplink band is located at the middle position of the predetermined band, institute
State the two sides that band downlink is located at the predetermined band；
Or,
The band downlink is located at the middle position of the predetermined band, and the uplink band is located at the two of the predetermined band
Side.
3. according to the method described in claim 1, wherein, the uplink signal and the downlink signal occupy respective frequency domain respectively
Whole time-domain resources；
And/or
It include protection bandwidth between the uplink band and the band downlink.
4. according to the method described in claim 1, further include:
The first dual-mode switching command is sent to terminal, so that the terminal determines configurating downlink frequency range, band downlink and institute
The centre frequency for stating predetermined band is identical；
And/or
The second dual-mode switching command is sent to terminal, so that the terminal determines configurating downlink frequency range and uplink band with institute
It states symmetrical centered on the centre frequency of predetermined band；
And/or
Third dual-mode switching command is sent to terminal, is carried out up and down by the way of time division duplex so that the terminal is determined
The transmission of row signal.
5. according to the method described in claim 4, wherein, in the first dual-mode switching command including that predetermined band indicates
Information；
And/or
It include uplink band bandwidth instruction information and/or band downlink bandwidth instruction letter in the first dual-mode switching command
Breath.
6. according to the method described in claim 4, including uplink band bandwidth in the first dual-mode switching command wherein
Indicate that information and/or band downlink bandwidth indicate information；
The base station adjusts the uplink band bandwidth and/or the band downlink band according to uplink and downlink data payload situation in real time
Width, and terminal is sent to by the first dual-mode switching command.
7. a kind of duplex data transfer method, comprising:
Upstream data is modulated to uplink band by terminal, generates uplink signal, wherein the centre frequency of the uplink band with point
The centre frequency of the predetermined band of provisioned user is identical；
The terminal obtains downlink signal in band downlink, wherein the centre frequency of the band downlink and distributes to user's
The centre frequency of predetermined band is identical；
The sum of the uplink band and the band downlink be less than or equal to the predetermined band, and the uplink band and it is described under
Line frequency section does not overlap.
8. according to the method described in claim 7, wherein, the uplink band is located at the middle position of the predetermined band, institute
State the two sides that band downlink is located at the predetermined band；
Or,
The band downlink is located at the middle position of the predetermined band, and the uplink band is located at the two of the predetermined band
Side.
9. according to the method described in claim 7, wherein, the uplink signal and the downlink signal occupy respective frequency domain respectively
Whole time-domain resources；
And/or
It include protection bandwidth between the uplink band and the band downlink.
10. according to the method described in claim 7, further include:
Configurating downlink frequency range, band downlink and the predetermined band are determined according to the first dual-mode switching command from base station
Centre frequency it is identical；
And/or
Determine configurating downlink frequency range and uplink band with the predetermined frequency according to the second dual-mode switching command from base station
It is symmetrical centered on the centre frequency of section；
And/or
Uplink and downlink signals biography is carried out by the way of time division duplex according to the third dual-mode switching command determination from base station
It is defeated.
11. according to the method described in claim 10, wherein, referring in the first dual-mode switching command including predetermined band
Show information, indicates that information determines predetermined band according to the predetermined band；
And/or
It include uplink band bandwidth instruction information and/or band downlink bandwidth instruction letter in the first dual-mode switching command
Breath indicates that information and/or band downlink bandwidth instruction information calculate the uplink band and institute according to the uplink band bandwidth
State band downlink.
12. according to the method described in claim 7, further include:
Terminal uses time-multiplexed mode transmission channel detection reference signal SRS, demodulated reference signal in discontinuous bandwidth
DMRS, Physical Uplink Shared Channel PUSCH information.
13. a kind of base station, comprising:
Downlink signal generation unit, for modulate downstream data in band downlink, to be generated downlink signal, wherein the downlink
The centre frequency of frequency range is identical as the centre frequency for the predetermined band for distributing to user；
Uplink signal acquiring unit, for uplink band obtain uplink signal, wherein the centre frequency of the uplink band with
The centre frequency for distributing to the predetermined band of user is identical；
The sum of the uplink band and the band downlink be less than or equal to the predetermined band, and the uplink band and it is described under
Line frequency section does not overlap.
14. a kind of base station, including
Memory；And
It is coupled to the processor of the memory, the processor is configured to based on the instruction execution for being stored in the memory
Such as method as claimed in any one of claims 1 to 6.
15. a kind of terminal, comprising:
Uplink signal generation unit generates uplink signal, wherein the uplink for upstream data to be modulated to uplink band
The centre frequency of frequency range is identical as the centre frequency for the predetermined band for distributing to user；
Downlink signal acquiring unit, for band downlink obtain downlink signal, wherein the centre frequency of the band downlink with
The centre frequency for distributing to the predetermined band of user is identical；
The sum of the uplink band and the band downlink be less than or equal to the predetermined band, and the uplink band and it is described under
Line frequency section does not overlap.
16. a kind of terminal, comprising:
Memory；And
It is coupled to the processor of the memory, the processor is configured to based on the instruction execution for being stored in the memory
Such as the described in any item methods of claim 7 to 12.
17. a kind of computer readable storage medium, is stored thereon with computer program instructions, real when which is executed by processor
The step of method described in existing claim 1 to 12 any one.
18. a kind of duplex data transfer system, comprising: base station described in claim 13 or 14；With claim 15 or 16 institutes
The terminal stated.
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| CN201710875180.1A CN109561501B (en) | 2017-09-25 | 2017-09-25 | Duplex data transmission method, base station and terminal |
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| CN201710875180.1A CN109561501B (en) | 2017-09-25 | 2017-09-25 | Duplex data transmission method, base station and terminal |
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| CN109561501B (en) | 2022-08-30 |
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