CN107769903A - A kind of method and apparatus in radio communication - Google Patents
A kind of method and apparatus in radio communication Download PDFInfo
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- CN107769903A CN107769903A CN201610704077.6A CN201610704077A CN107769903A CN 107769903 A CN107769903 A CN 107769903A CN 201610704077 A CN201610704077 A CN 201610704077A CN 107769903 A CN107769903 A CN 107769903A
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- wireless
- wireless signal
- transmission
- time window
- singal
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Classifications
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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
- H04L5/0001—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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
-
- 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
Abstract
The invention discloses the method and apparatus in a kind of radio communication.UE receives the first wireless signal first;Then second wireless singal is received.Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.The cut-off time of the reception time window of first wireless signal is less than the duration of 1 OFDM symbol apart from the time interval of the initial time of the reception time window of the second wireless singal.The reception time window of first wireless signal is before the reception time window of the second wireless singal.First wireless signal uses the first modulation coding mode, and first wireless signal uses the second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than efficiency of transmission corresponding to first modulation coding mode.The present invention is avoided that the decline of TDD efficiencies of transmission caused by excessive GP configuring.
Description
Technical field
The present invention relates to the transmission plan in wireless communication system, more particularly to TDD (Time Division
Duplex, time division duplex) method and apparatus.
Background technology
Transmitted for TDD, the time resource reserved for downlink transfer and by the reserved transfer resource of uplink it
Between would generally configure a GP (Guard Period, protection interval), the GP be used to overcome up-link wireless signal to descending
The interference of wireless signal.
In 3GPP (3rd Generation Partner Project, third generation cooperative partner program) Release 14
In Latency Reduction (LR, delay reduce) problem, an important application purpose is exactly low latency communication.For drop
The demand of low latency, traditional LTE subframe structure needs to be redesigned, based on sTTI (short Transport Time
Interval, short transmission time interval) system design come into question.
Communicated for TDD low latencies, the switching point of more downstream-to-upstreams needs to be allocated, and then needs setting more
GP, and excessive GP can cause the decline of efficiency of transmission.
In order to solve the above problems, the specific GP length of UE (User Equipment, user equipment) is suggested, according to UE
Distance to center of housing estate configures suitable GP length for each UE.
The content of the invention
Inventor has found that specific this scheme of GP length of UE depends on UE precise positioning, therefore robust by studying
Property is a potential problems.Further, the above method can only part reduction GP length, performance needs further to be optimized.
The present invention provides solution for excessively declining this problem using efficiency of transmission caused by GP.Need
Bright, in the case where not conflicting, the feature in embodiment and embodiment in the UE of the application may apply in base station,
Vice versa.In the case where not conflicting, the feature in embodiments herein and embodiment can be arbitrarily mutually combined.
The invention discloses a kind of method being used in the UE of time division duplex, wherein, comprise the following steps:
- step A. receives the first wireless signal;
- step B. receives second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first
The reception time window of wireless signal and the reception time window of the second wireless singal are continuous;Or first wireless communication
Number reception time window cut-off time apart from the second wireless singal reception time window initial time time interval
No more than the duration of 1 OFDM symbol.The reception time window of first wireless signal is in second nothing
Before the reception time window of line signal.First wireless signal uses the first modulation coding mode, first wireless signal
Using the second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than the first modulating-coding side
Efficiency of transmission corresponding to formula, or the transmission means of the second wireless singal and the transmission means of first wireless signal are not
Together.The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
As one embodiment, the UE is in the reception time window of first wireless signal not by small from this
The interference of the upward signal of area's terminal, the UE is in the reception time window of the second wireless singal by small from this
The interference of the upward signal of area's terminal.
In above-described embodiment, base station sends downstream signal in GP, improves efficiency of transmission.Further, base station be for
The wireless signal of same bit block is assigned with different modulation coding modes, BLER (Block caused by avoiding uplink interference
Error Rate, Block Error Rate) increase, improve robustness (Robustness).
As one embodiment, the modulation coding mode is that MCS (Modulation and Coding Status, is adjusted
Encoding state processed).
As one embodiment, modulation system and coding used by the modulation coding mode instruction respective wireless signal
Rate (Coding Rate).
As one embodiment, code rate corresponding to first modulation coding mode and the second modulating-coding side
Code rate is equal corresponding to formula, and the exponent number of modulation system corresponding to the first modulation coding mode is higher than second modulating-coding
The exponent number of modulation system corresponding to mode.
As one embodiment, transmission channel corresponding to first bit block is DL-SCH (DownLink Shared
CHannel, DSCH Downlink Shared Channel).
As one embodiment, first wireless signal is in PDSCH (Physical Downlink Shared
CHannel, Physical Downlink Shared Channel) on transmit.
As one embodiment, the second wireless singal is transmitted on PDSCH.
As one embodiment, in sPDSCH, (shortened PDSCH, short physical down are total to first wireless signal
Enjoy channel) on transmit.
As one embodiment, the second wireless singal is transmitted on sPDSCH.
As one embodiment, transmission channel corresponding to the second wireless singal be MCH (Multicast Channel,
Multicast Channel).
As one embodiment, first bit block is a TB (Transport Block, transmission block).
As one embodiment, first bit block includes multiple TB (Transport Block, transmission block).
As one embodiment, first bit block generates the second ratio after channel coding (Channel Coding)
Special block, second bit block are divided into the 3rd bit block and the 4th bit block two parts.First wireless signal is institute
State the 3rd bit block and pass through modulation mapper (Modulation Mapper) successively, layer mapper (Layer Mapper), prelist
Code (Precoding), resource particle mapper (Resource Element Mapper), ofdm signal occur
(Generation) output after.The second wireless singal is that the 4th bit block passes through modulation mapper successively
(Modulation Mapper), layer mapper (Layer Mapper), precoding (Precoding), resource particle mapper
Output after (Generation) occurs for (Resource Element Mapper), ofdm signal.
As a sub- embodiment of above-described embodiment, the layer and the 4th bit block that the 3rd bit block is mapped
The layer mapped is different.
As a sub- embodiment of above-described embodiment, the pre-coding matrix corresponding to the 3rd bit block and described
Pre-coding matrix corresponding to four bit blocks is different.
As a sub- embodiment of above-described embodiment, the mapping method of first wireless signal to RE and described second
Wireless signal to RE mapping method are different.
As one embodiment, first bit block includes the first sub- bit block and the second sub- bit block.Described first
Wireless signal is that the described first sub- bit block passes through modulation mapper (Modulation Mapper), layer mapper successively
(Layer Mapper), precoding (Precoding), resource particle mapper (Resource Element Mapper), OFDM
Output after (Generation) occurs for signal.The second wireless singal is the described second sub- bit block successively through ovennodulation
Mapper (Modulation Mapper), layer mapper (Layer Mapper), precoding (Precoding), resource particle is reflected
Output after (Generation) occurs for emitter (Resource Element Mapper), ofdm signal.
As a sub- embodiment of above-described embodiment, layer and the second sub- ratio that the first sub- bit block is mapped
The layer that special block is mapped is different.
As a sub- embodiment of above-described embodiment, pre-coding matrix corresponding to the first sub- bit block and described
Pre-coding matrix corresponding to second sub- bit block is different.
As a sub- embodiment of above-described embodiment, the mapping method of first wireless signal to RE and described second
Wireless signal to RE mapping method are different.
Specifically, according to an aspect of the present invention, it is characterised in that first wireless signal and described second wireless
Signal is sent by the set of first antenna port and the second antenna port set respectively, first antenna port set and described the
Two antenna port sets include positive integer antenna port respectively.The first antenna port set and second antenna port
Set is different.
As one embodiment, an antenna port sends a RS (Reference Signal, reference signal)
Port.As a sub- embodiment of the present embodiment, the RS ports that the different antenna ports are sent are orthogonal.
As one embodiment, the first antenna port set is UE specific, and second antenna port set is
Cell is public.
As one embodiment, the first antenna port set is UE specific, and second antenna port set is
Cell is public.
As one embodiment, the first antenna port set is dynamic configuration.
As one embodiment, second antenna port set is configured by high-level signaling.
As one embodiment, first wireless signal uses the sending method of beam shaping, second wireless communication
Number using send diversity sending method.
In above-described embodiment, the running time-frequency resource shared by the second wireless singal may be by multiple (rather than one) eventually
Hold for sending upward signal, BLER is reduced by interference randomization.
Specifically, according to an aspect of the present invention, it is characterised in that first wireless signal and described second wireless
Signal takes the first RU (Resource Unit, resource units) set and the 2nd RU set respectively.The first RU set and institute
State the 2nd RU set includes positive integer RU respectively, and the RU takes an OFDM (Orthogonal Frequency in time domain
Division Multiplexing, OFDM) symbol duration, the RU frequency domain take a subcarrier.
The shared bandwidth of the first RU set bandwidth shared with the 2nd RU set is different.
As one embodiment, the running time-frequency resource shared by the second wireless singal may be by multiple (rather than one)
Terminal is used to send upward signal, avoids receiving the severe jamming from a terminal.
As one embodiment, the RU is RE (Resource Element, resource units).
As one embodiment, at least in the presence of two RU, subcarrier spacing corresponding to described two RU is different.
As one embodiment, it is to localize (Localized) that the first RU, which is integrated on frequency domain, the 2nd RU
It is distributed (Distributed) to be integrated on frequency domain.
As one embodiment, the shared bandwidth of given RU set refers to:Highest frequency is taken in given RU set
The bandwidth between the RU of minimum frequency is taken in RU and the given set.
Specifically, according to an aspect of the present invention, it is characterised in that the very first time interval be reserved for up transmission.
The reception time window of the very first time interval and the second wireless singal has overlapping.Connect corresponding to the up transmission
Receipts person is the sender of the second wireless singal.Frequency domain resource and first wireless signal shared by the up transmission
Shared frequency domain resource belongs to same system bandwidth.
As one embodiment, the sender of the second wireless singal is the sender of first wireless signal.
As one embodiment, shared by the frequency domain resource and first wireless signal shared by the up transmission
Frequency domain resource belongs to same carrier wave.
As one embodiment, the system bandwidth is no more than 1000MHz (megahertz).
As one embodiment, the system bandwidth is no more than 100MHz (megahertz).
As one embodiment, the corresponding carrier wave of the system bandwidth.
As one embodiment, the very first time interval be reserved for it is up transmission refer to:The very first time interval belongs to
It is configured as the later half of GP time-domain resource.
As one embodiment, the very first time interval be reserved for it is up transmission refer to:The second wireless singal
Sender's dispatch terminal send upward signal on very first time interval.
As one embodiment, the very first time interval be reserved for it is up transmission refer to:By second wireless communication
Number sender scheduled in terminal send upward signal on very first time interval.
Specifically, according to an aspect of the present invention, it is characterised in that the step A also comprises the following steps:
- step A0. receives the first information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulation
Coded system, second modulation coding mode }.
As one embodiment, the physical layer signaling be DCI (Downlink Control Information, it is descending
Control information).
As one embodiment, the physical layer signaling is to be used for the descending DCI for authorizing (Downlink Grant).
As one embodiment, the first information indicates first modulation coding mode, second modulating-coding
Mode and first modulation coding mode are associated.
As a sub- embodiment of above-described embodiment, index corresponding to first modulation coding mode is equal to described the
Index corresponding to two modulation coding modes adds target offset amount, and the target offset amount is configurable or fixed.
Above-mentioned sub- embodiment can save downlink signaling expense, improve efficiency of transmission.
As one embodiment, the physical layer signaling is also used for determining the first RU set and the 2nd RU collection
Close.
As one embodiment, the physical layer signaling receives reception of the time window in the second wireless singal
Before time window.
Specifically, according to an aspect of the present invention, it is characterised in that the step A also comprises the following steps:
- step A1. receives the second information.
Wherein, second information is used for determining { during the cut-off of the reception time window of first wireless signal
At least one of carve, the cut-off time of the reception time window of the second wireless singal.
As one embodiment, second information is carried by high-level signaling.
As one embodiment, the first information and second information are carried by same physical layer signaling.
Above-described embodiment causes base station is adapted dynamically in GP to be used for the time interval of downlink transfer with balance transmission efficiency
Avoided with interference.
The invention discloses a kind of method being used in the base station of time division duplex, wherein, comprise the following steps:
- step A. sends the first wireless signal;
- step B. sends second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first
The transmission time window of wireless signal and the transmission time window of the second wireless singal are continuous;Or first wireless communication
Number transmission time window cut-off time apart from the second wireless singal transmission time window initial time time interval
No more than the duration of 1 OFDM symbol.The transmission time window of first wireless signal is in second nothing
Before the transmission time window of line signal.First wireless signal uses the first modulation coding mode, first wireless signal
Using the second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than the first modulating-coding side
Efficiency of transmission corresponding to formula, or the transmission means of the second wireless singal and the transmission means of first wireless signal are not
Together.The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
Specifically, according to an aspect of the present invention, it is characterised in that first wireless signal and described second wireless
Signal is sent by the set of first antenna port and the second antenna port set respectively, first antenna port set and described the
Two antenna port sets include positive integer antenna port respectively.The first antenna port set and second antenna port
Set is different.
Specifically, according to an aspect of the present invention, it is characterised in that first wireless signal and described second wireless
Signal takes the first RU set and the 2nd RU set respectively.The first RU set and the 2nd RU set include just whole respectively
Several RU, the RU take the duration of an OFDM symbol in time domain, and the RU takes a subcarrier in frequency domain.It is described
The shared bandwidth of the first RU set bandwidth shared with the 2nd RU set is different.
Specifically, according to an aspect of the present invention, it is characterised in that the very first time interval be reserved for up transmission.
The reception time window of the very first time interval and the second wireless singal has overlapping.Recipient corresponding to the up transmission
It is the sender of the second wireless singal.Shared by frequency domain resource and first wireless signal shared by the up transmission
Frequency domain resource belongs to same system bandwidth.
Specifically, according to an aspect of the present invention, it is characterised in that the step A also comprises the following steps:
- step A0. sends the first information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulation
Coded system, second modulation coding mode }.
Specifically, according to an aspect of the present invention, it is characterised in that the step A also comprises the following steps:
- step A1. sends the second information.
Wherein, second information is used for determining { during the cut-off of the reception time window of first wireless signal
At least one of carve, the cut-off time of the reception time window of the second wireless singal.
The invention discloses a kind of user equipment for being used for dynamic dispatching, wherein, including following module:
First receiving module:For receiving the first wireless signal;
Second receiving module:For receiving second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first
The reception time window of wireless signal and the reception time window of the second wireless singal are continuous;Or first wireless communication
Number reception time window cut-off time apart from the second wireless singal reception time window initial time time interval
No more than the duration of 1 OFDM symbol.The reception time window of first wireless signal is in second nothing
Before the reception time window of line signal.First wireless signal uses the first modulation coding mode, first wireless signal
Using the second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than the first modulating-coding side
Efficiency of transmission corresponding to formula, or the transmission means of the second wireless singal and the transmission means of first wireless signal are not
Together.The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
As one embodiment, above-mentioned user equipment is characterised by, first wireless signal and described second wireless
Signal is sent by the set of first antenna port and the second antenna port set respectively, first antenna port set and described the
Two antenna port sets include positive integer antenna port respectively.The first antenna port set and second antenna port
Set is different.
As one embodiment, above-mentioned user equipment is characterised by, first wireless signal and described second wireless
Signal takes the first RU set and the 2nd RU set respectively.The first RU set and the 2nd RU set include just whole respectively
Several RU, the RU take the duration of an OFDM symbol in time domain, and the RU takes a subcarrier in frequency domain.It is described
The shared bandwidth of the first RU set bandwidth shared with the 2nd RU set is different.
As one embodiment, above-mentioned user equipment is characterised by, the very first time interval be reserved for up transmission.Institute
State the reception time window of very first time interval and the second wireless singal have it is overlapping.Received corresponding to the up transmission
Person is the sender of the second wireless singal.Frequency domain resource and the first wireless signal institute shared by the up transmission
The frequency domain resource of occupancy belongs to same system bandwidth.
As one embodiment, above-mentioned user equipment is characterised by, first receiving module is additionally operable to reception first
Information.Wherein, the first information is carried by physical layer signaling, and the first information is used for determining that { first modulation is compiled
Code mode, second modulation coding mode }.
As one embodiment, above-mentioned user equipment is characterised by, first receiving module is additionally operable to reception second
Information.Wherein, second information be used for determining first wireless signal reception time window cut-off time,
At least one of the cut-off time of the reception time window of the second wireless singal }.
The invention discloses a kind of base station equipment for being used for dynamic dispatching, wherein, including following module:
First sending module:The first wireless signal is received for sending;
Second sending module:For sending second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first
The transmission time window of wireless signal and the transmission time window of the second wireless singal are continuous;Or first wireless communication
Number transmission time window cut-off time apart from the second wireless singal transmission time window initial time time interval
No more than the duration of 1 OFDM symbol.The transmission time window of first wireless signal is in second nothing
Before the transmission time window of line signal.First wireless signal uses the first modulation coding mode, first wireless signal
Using the second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than the first modulating-coding side
Efficiency of transmission corresponding to formula, or the transmission means of the second wireless singal and the transmission means of first wireless signal are not
Together.The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
As one embodiment, above-mentioned base station equipment is characterised by, first wireless signal and described second wireless
Signal is sent by the set of first antenna port and the second antenna port set respectively, first antenna port set and described the
Two antenna port sets include positive integer antenna port respectively.The first antenna port set and second antenna port
Set is different.
As one embodiment, above-mentioned base station equipment is characterised by, first wireless signal and described second wireless
Signal takes the first RU set and the 2nd RU set respectively.The first RU set and the 2nd RU set include just whole respectively
Several RU, the RU take the duration of an OFDM symbol in time domain, and the RU takes a subcarrier in frequency domain.It is described
The shared bandwidth of the first RU set bandwidth shared with the 2nd RU set is different.
As one embodiment, above-mentioned base station equipment is characterised by, the very first time interval be reserved for up transmission.Institute
State the reception time window of very first time interval and the second wireless singal have it is overlapping.Received corresponding to the up transmission
Person is the base station.The frequency domain resource category shared by frequency domain resource and first wireless signal shared by the up transmission
In same system bandwidth.
As one embodiment, above-mentioned base station equipment is characterised by, first sending module is additionally operable to transmission first
Information.Wherein, the first information is carried by physical layer signaling, and the first information is used for determining that { first modulation is compiled
Code mode, second modulation coding mode }.
As one embodiment, above-mentioned base station equipment is characterised by, first sending module is additionally operable to transmission second
Information.Wherein, second information be used for determining first wireless signal reception time window cut-off time,
At least one of the cut-off time of the reception time window of the second wireless singal }.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, of the invention is other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the flow chart of downlink transfer according to an embodiment of the invention;
Fig. 2 shows the first wireless signal according to an embodiment of the invention and the timing diagram of second wireless singal;
Fig. 3 shows descending/up switching point schematic diagram of base station side according to an embodiment of the invention;
Fig. 4 show the first wireless signal according to an embodiment of the invention and shared by second wireless singal when
The schematic diagram of frequency resource;
Fig. 5 shows the structured flowchart of the processing unit in UE according to an embodiment of the invention;
Fig. 6 shows the structured flowchart of the processing unit in base station according to an embodiment of the invention;
Embodiment
Technical scheme is described in further detail below in conjunction with accompanying drawing, it is necessary to explanation is, do not rushed
In the case of prominent, the feature in embodiments herein and embodiment can be arbitrarily mutually combined.
Embodiment 1
Embodiment 1 illustrates the flow chart of downlink transfer, as shown in Figure 1.In accompanying drawing 1, base station N1 is UE U2 service
The maintenance base station of cell.In accompanying drawing 1, the step in square frame F1 is optional.
ForBase station N1, the first signaling is sent in step s 11;The first wireless signal is sent in step s 12;In step
Second wireless singal is sent in S13.
ForUE U2, the first signaling is received in the step s 21;The first wireless signal is received in step S22;In step
Second wireless singal is received in S23.
In embodiment 1, first signaling is physical layer signaling.First bit block be used to generate first wireless communication
Number and the second wireless singal.The reception time window of first wireless signal is in the second wireless singal
Before reception time window.First wireless signal uses the first modulation coding mode, and first wireless signal uses second
Modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than corresponding to first modulation coding mode
Efficiency of transmission, or the transmission means of the second wireless singal are different with the transmission means of first wireless signal.It is described
Transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.First signaling by with
In it is determined that the configuration information of first wireless signal, the configuration information of first wireless signal include { described first
Modulation coding mode, RV (Redundancy Version, redundancy versions) corresponding to first wireless signal, first nothing
NDI corresponding to line signal (New Data Indicator, new data instruction), the time-frequency money that first wireless signal takes
At least one of source, HARQ process numbers (Process Number) corresponding to first wireless signal }.
As the sub- embodiment 1 of embodiment 1, base station N1 sends the second signaling in step slo, and UE U2 are in step S20
Receive the second signaling.Second signaling is high-level signaling, and second signaling is used to determine { second modulation by UE U2
Coded system, the cut-off time of the reception time window of first wireless signal, the second wireless singal connects
At least one of receive the cut-off time of time window }.
As a sub- embodiment of the sub- embodiment 1 of embodiment 1, second signaling is high-level signaling.
As a sub- embodiment of the sub- embodiment 1 of embodiment 1, first signaling and second signaling refer to jointly
Show second modulation coding mode.
As the sub- embodiment 2 of embodiment 1, first signaling is used to determine { the second modulating-coding side by UE U2
Formula, the cut-off time of the reception time window of first wireless signal, the reception time of the second wireless singal
At least one of the cut-off time of window }.
As the sub- embodiment 3 of embodiment 1, first bit block is a TB.
As the sub- embodiment 4 of embodiment 1, code rate corresponding to first modulation coding mode and described second is adjusted
Code rate corresponding to coded system processed is equal, and the exponent number of modulation system corresponding to the first modulation coding mode is higher than described second
The exponent number of modulation system corresponding to modulation coding mode.
As the sub- embodiment 5 of embodiment 1, first bit block is given birth to after channel coding (Channel Coding)
Into the second bit block, second bit block is divided into the 3rd bit block and the 4th bit block two parts.Described first is wireless
Signal is that the 3rd bit block passes through modulation mapper (Modulation Mapper), layer mapper (Layer successively
Mapper), precoding (Precoding), resource particle mapper (Resource Element Mapper), ofdm signal hair
Output after raw (Generation).The second wireless singal is that the 4th bit block passes through modulation mapper successively
(Modulation Mapper), layer mapper (Layer Mapper), precoding (Precoding), resource particle mapper
Output after (Generation) occurs for (Resource Element Mapper), ofdm signal.
As the sub- embodiment 5 of embodiment 1, first wireless signal and the second wireless singal are in same subframe
Middle transmission.
As the sub- embodiment 6 of embodiment 1, reception time window the connecing in the second wireless singal of first signaling
Before receipts time window.Book embodiment is avoided that down physical layer signaling signaling is disturbed by upward signal.
Embodiment 2
Embodiment 2 illustrates the first wireless signal and the timing diagram of second wireless singal, as shown in Figure 2.In accompanying drawing 2,
Oblique line identifies the first wireless signal, cross spider mark second wireless singal.Wherein, very first time interval is optional.
In accompanying drawing 2, very first time window is the transmission time window of the first wireless signal, and the second time window is second wireless singal
Transmission time window, the 3rd time window is the reception time window of second wireless singal, and the 4th time window is second wireless singal
Receive time window.Propagation delay in accompanying drawing 2 is time of the wireless signal required for from base station to UE.
As the sub- embodiment 1 of embodiment 2, the reception time window of first wireless signal and the second wireless singal
Reception time window be continuous.
As the sub- embodiment 2 of embodiment 2, described in the cut-off time distance of the reception time window of first wireless signal
The time interval of the initial time of the reception time window of second wireless singal is no more than the duration of 1 OFDM symbol.It is described
Time interval is used for OFDM symbol alignment.
As the sub- embodiment 3 of embodiment 2, the very first time interval in accompanying drawing 2 is reserved for uplink, and described first
The cut-off time of time interval is the cut-off time of the second time window, and the duration at the very first time interval is equal to the biography
Broadcast delay.The reception time window of the very first time interval and the second wireless singal has overlapping.
Embodiment 3
Embodiment 3 illustrates descending/up switching point schematic diagram of base station side, as shown in Figure 3.In accompanying drawing 3, backslash
The time-domain resource of mark keeps for downlink transfer, and the time-domain resource of horizontal line mark keeps for uplink, bold box mark when
Domain resource is used for transmission/reception switching of base station radio frequency module.
In embodiment 3, by the time-domain resource (such as bold box mark) that descending/up switching point is reserved much smaller than traditional
GP in TDD system, significantly improves efficiency of transmission.
As the sub- embodiment 1 of embodiment 3, time-domain resource (such as bold box reserved by descending/up switching point
Mark) it is less than 1 microsecond.
As the sub- embodiment 2 of embodiment 3, time-domain resource (such as bold box reserved by descending/up switching point
Mark) be less than the propagation delay (Propagation Delay) from base station to UE, i.e., for downlink reception UE, descending
The upward signal from other UE is likely to be received in the reception time window of wireless signal.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the first wireless signal and the running time-frequency resource shared by second wireless singal, such as attached
Shown in Fig. 4.In accompanying drawing 4, oblique line identifies the running time-frequency resource shared by the first wireless signal, cross spider mark second wireless singal institute
The running time-frequency resource of occupancy, the running time-frequency resource shared by vertical line mark up-link wireless signal.
In embodiment 4, the frequency domain resource shared by first wireless signal is to localize, first wireless signal
Shared frequency domain resource is distributed.When scheduling of the up-link wireless signal using localization, embodiment 4 can be randomized the
The interference that two wireless signals are received, improves robustness.
As the sub- embodiment 1 of embodiment 4, first wireless signal and the second wireless singal take first respectively
RU gathers and the 2nd RU set.The first RU set and the 2nd RU set include positive integer RU respectively, and the RU exists
Time domain takes the duration of an OFDM symbol, and the RU takes a subcarrier in frequency domain.First RU is integrated into one
The quantity that the quantity of RU in individual OFDM symbol and the 2nd RU are integrated into the RU in an OFDM symbol is equal.
As the sub- embodiment 1 of embodiment 4, first wireless signal and the second wireless singal are respectively by first day
The set of line end mouth and the second antenna port set are sent, the first antenna port set and second antenna port set point
Bao Kuo not positive integer antenna port.Antenna port in the first antenna port set is UE specific, described second day
Antenna port in line end mouth set is that cell is public.
Embodiment 5
Embodiment 5 illustrates the structured flowchart of the processing unit in a UE, as shown in Figure 5.In accompanying drawing 5, UE processing
Device 100 is mainly made up of the first receiving module 101 and the second receiving module 102.
First receiving module 101 is used to receive the first wireless signal;Second receiving module 102 is used to receive the second wireless communication
Number.
In embodiment 5, the first bit block be used to generate first wireless signal and the second wireless singal.It is described
The reception time window of first wireless signal and the reception time window of the second wireless singal are continuous.First nothing
The reception time window of line signal is before the reception time window of the second wireless singal.First wireless signal uses
First modulation coding mode, first wireless signal use the second modulation coding mode.Second modulation coding mode pair
The efficiency of transmission answered is less than efficiency of transmission corresponding to first modulation coding mode, and the transmission of the second wireless singal
Mode is different with the transmission means of first wireless signal.The transmission means includes { transmission antenna port, to running time-frequency resource
Mapping mode at least one of.
As the sub- embodiment 1 of embodiment 5, first receiving module 101 is additionally operable at least one of:
- receives the first information;
- receives the second information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulation
Coded system, second modulation coding mode }.Second information is used for determining { first wireless signal
At least one of receive the cut-off time of time window, the cut-off time of the reception time window of the second wireless singal }.
As the sub- embodiment 2 of embodiment 5, wave beam is respectively adopted in first wireless signal and the second wireless singal
Excipient and the transmission means for sending diversity.
Embodiment 6
Embodiment 6 illustrates the structured flowchart of the processing unit in a base station, as shown in Figure 6.In accompanying drawing 6, base station
Processing unit 200 is mainly made up of the first sending module 201 and the second sending module 202.
First sending module 201, which is used to send, receives the first wireless signal;Second sending module 202 is used to send the second nothing
Line signal.
In embodiment 6, the first bit block be used to generate first wireless signal and the second wireless singal.It is described
Initial time of the cut-off time of the transmission time window of first wireless signal apart from the transmission time window of the second wireless singal
Time interval be less than 5 microseconds.The transmission time window of first wireless signal is in the second wireless singal
Before transmission time window.First wireless signal uses the first modulation coding mode, and first wireless signal uses second
Modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than corresponding to first modulation coding mode
Efficiency of transmission, and the transmission means of the second wireless singal is different with the transmission means of first wireless signal.It is described
Transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
As the sub- embodiment 1 of embodiment 6, first sending module 201 is additionally operable at least one of:
- sends the first information;
- sends the second information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulation
Coded system, second modulation coding mode }.Second information is used for determining { first wireless signal
At least one of receive the cut-off time of time window, the cut-off time of the reception time window of the second wireless singal }.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be referred to by program
Related hardware is made to complete, described program can be stored in computer-readable recording medium, such as read-only storage, hard disk or light
Disk etc..Optionally, all or part of step of above-described embodiment can also be realized using one or more integrated circuit.Phase
Answer, each modular unit in above-described embodiment, example, in hardware can be used to realize, can also be by the form of software function module
Realize, the application is not limited to the combination of the software and hardware of any particular form.UE or interruption in the present invention include but unlimited
In nothings such as mobile phone, tablet personal computer, notebook, card of surfing Internet, low cost terminals, NB-IoT terminals, eMTC terminals, vehicular communication equipments
Line communication equipment.Base station or network side equipment in the present invention include but is not limited to macrocell base stations, microcell base station, family
The Wireless Telecom Equipments such as base station, relay base station.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification for being made, equivalent substitution, improve etc., it should be included in the protection of the present invention
Within the scope of.
Claims (14)
1. a kind of method being used in the UE of time division duplex, wherein, comprise the following steps:
- step A. receives the first wireless signal;
- step B. receives second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first is wireless
The reception time window of signal and the reception time window of the second wireless singal are continuous;Or first wireless signal
The cut-off time for receiving time window does not surpass apart from the time interval of the initial time of the reception time window of the second wireless singal
Spend the duration of 1 OFDM symbol.The reception time window of first wireless signal is in second wireless communication
Number reception time window before.First wireless signal uses the first modulation coding mode, and first wireless signal uses
Second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than first modulation coding mode pair
The efficiency of transmission answered, or the transmission means of the second wireless singal are different with the transmission means of first wireless signal.
The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
2. according to the method for claim 1, it is characterised in that first wireless signal and the second wireless singal point
Do not sent by the set of first antenna port and the second antenna port set, the first antenna port set and second antenna
Port set includes positive integer antenna port respectively.The first antenna port set and second antenna port set are not
Together.
3. according to claim 1, the method described in 2, it is characterised in that first wireless signal and the second wireless singal
The first RU set and the 2nd RU set are taken respectively.The first RU set and the 2nd RU set include positive integer respectively
RU, the RU take the duration of an OFDM symbol in time domain, and the RU takes a subcarrier in frequency domain.Described first
The shared bandwidth of the RU set bandwidth shared with the 2nd RU set is different.
4. according to claim 1, the method described in 2,3, it is characterised in that the very first time interval be reserved for up transmission.Institute
State the reception time window of very first time interval and the second wireless singal have it is overlapping.Received corresponding to the up transmission
Person is the sender of the second wireless singal.Frequency domain resource and the first wireless signal institute shared by the up transmission
The frequency domain resource of occupancy belongs to same system bandwidth.
5. according to the method described in claim 1-4, it is characterised in that the step A also comprises the following steps:
- step A0. receives the first information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulating-coding
Mode, second modulation coding mode }.
6. according to the method described in claim 1-5, it is characterised in that the step A also comprises the following steps:
- step A1. receives the second information.
Wherein, second information is used for determining { cut-off time of the reception time window of first wireless signal, institute
At least one of state the cut-off time of the reception time window of the second wireless singal }.
7. a kind of method being used in the base station of time division duplex, wherein, comprise the following steps:
- step A. sends the first wireless signal;
- step B. sends second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first is wireless
The transmission time window of signal and the transmission time window of the second wireless singal are continuous;Or first wireless signal
The cut-off time for sending time window does not surpass apart from the time interval of the initial time of the transmission time window of the second wireless singal
Spend the duration of 1 OFDM symbol.The transmission time window of first wireless signal is in second wireless communication
Number transmission time window before.First wireless signal uses the first modulation coding mode, and first wireless signal uses
Second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than first modulation coding mode pair
The efficiency of transmission answered, or the transmission means of the second wireless singal are different with the transmission means of first wireless signal.
The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
8. according to the method for claim 7, it is characterised in that first wireless signal and the second wireless singal point
Do not sent by the set of first antenna port and the second antenna port set, the first antenna port set and second antenna
Port set includes positive integer antenna port respectively.The first antenna port set and second antenna port set are not
Together.
9. according to claim 7, the method described in 8, it is characterised in that first wireless signal and the second wireless singal
The first RU set and the 2nd RU set are taken respectively.The first RU set and the 2nd RU set include positive integer respectively
RU, the RU take the duration of an OFDM symbol in time domain, and the RU takes a subcarrier in frequency domain.Described first
The shared bandwidth of the RU set bandwidth shared with the 2nd RU set is different.
10. according to claim 7, the method described in 8,9, it is characterised in that the very first time interval be reserved for up transmission.Institute
State the reception time window of very first time interval and the second wireless singal have it is overlapping.Recipient corresponding to the up transmission is
The base station.The frequency domain resource shared by frequency domain resource and first wireless signal shared by the up transmission belongs to same
One system bandwidth.
11. according to the method described in claim 7-10, it is characterised in that the step A also comprises the following steps:
- step A0. sends the first information.
Wherein, the first information is carried by physical layer signaling, and the first information is used for determining { first modulating-coding
Mode, second modulation coding mode }.
12. according to the method described in claim 7-11, it is characterised in that the step A also comprises the following steps:
- step A1. sends the second information.
Wherein, second information is used for determining { cut-off time of the reception time window of first wireless signal, institute
At least one of state the cut-off time of the reception time window of the second wireless singal }.
13. a kind of user equipment for being used for dynamic dispatching, wherein, including following module:
First receiving module:For receiving the first wireless signal;
Second receiving module:For receiving second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first is wireless
The reception time window of signal and the reception time window of the second wireless singal are continuous;Or first wireless signal
The cut-off time for receiving time window does not surpass apart from the time interval of the initial time of the reception time window of the second wireless singal
Spend the duration of 1 OFDM symbol.The reception time window of first wireless signal is in second wireless communication
Number reception time window before.First wireless signal uses the first modulation coding mode, and first wireless signal uses
Second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than first modulation coding mode pair
The efficiency of transmission answered, or the transmission means of the second wireless singal are different with the transmission means of first wireless signal.
The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
14. a kind of base station equipment for being used for dynamic dispatching, wherein, including following module:
First sending module:The first wireless signal is received for sending;
Second sending module:For sending second wireless singal.
Wherein, the first bit block be used to generate first wireless signal and the second wireless singal.Described first is wireless
The transmission time window of signal and the transmission time window of the second wireless singal are continuous;Or first wireless signal
The cut-off time for sending time window does not surpass apart from the time interval of the initial time of the transmission time window of the second wireless singal
Spend the duration of 1 OFDM symbol.The transmission time window of first wireless signal is in second wireless communication
Number transmission time window before.First wireless signal uses the first modulation coding mode, and first wireless signal uses
Second modulation coding mode.Efficiency of transmission corresponding to second modulation coding mode is less than first modulation coding mode pair
The efficiency of transmission answered, or the transmission means of the second wireless singal are different with the transmission means of first wireless signal.
The transmission means includes at least one of { transmission antenna port, to the mapping mode of running time-frequency resource }.
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