CN105766024B - transmission mode switching method and base station - Google Patents
transmission mode switching method and base station Download PDFInfo
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- CN105766024B CN105766024B CN201480037475.6A CN201480037475A CN105766024B CN 105766024 B CN105766024 B CN 105766024B CN 201480037475 A CN201480037475 A CN 201480037475A CN 105766024 B CN105766024 B CN 105766024B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/0005—Control or signalling for completing the hand-off
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Abstract
The invention discloses a kind of transmission mode switching method and base stations, belong to the communications field.The described method includes: base station obtains the current transmission mode of user equipment, transmission mode includes 1 port transmission mode and N-port transmission mode, and the quantity of N is equal with the antenna amount of cell where user equipment；The position of user equipment in the cell is detected in base station, and position includes central area and fringe region；When user equipment is currently operating in 1 port transmission mode, and user equipment is when being in central area, the transmission mode of user equipment is switched to N-port transmission mode by base station, is the N number of port CSI-RS of user device configuration, and N-port transmission mode and N number of port CSI-RS are notified to user equipment；Alternatively, be currently operating in N-port transmission mode when user equipment, and when user equipment is in fringe region, the transmission mode of user equipment is switched to 1 port transmission mode by base station, and by 1 port transmission pattern notification to user equipment.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of transmission mode switching method and base station.
Background technique
With the gradually growth of mobile subscriber's quantity, service of mobile communication increasingly upgrades, third generation partner program
(English: 3rd Generation Partnership Project, referred to as: 3GPP) and in order to adapt to reality technology needs, it proposes
Long term evolution (English: Long Term Evolution, referred to as: LTE) system, as the standard of future mobile communications.
Physical Downlink Shared Channel (the English: Physical Downlink of LTE system is defined in the standard agreement of LTE system
Shared Channel, referred to as: PDSCH) adoptable a variety of transmission modes (being labeled as TM, include TM1~TM9), and every kind
MIMO method used by transmission mode is not also identical, and the transmission mode having further includes a variety of MIMO methods.For example, TM1
For single port MIMO method；TM3 can both use transmission diversity MIMO method, can also be carried out using spatial multiplexing MIMO mode
Transmission.Wherein, spatial reuse is one kind to improve transmission data bulk, based on the technology of multi-code word simultaneous transmission, i.e., multiple
Mutually independent data flow is sent by being mapped to different layers, then by different antennas, the spatial multiplexing MIMO in TM3
Mode is transmitted using 2 ports.
For the double antenna networking scene of normal cells, user equipment using 2 port TM3 modes transmitted when,
It can be using single stream and double-current two ways work.Specifically, user equipment detects Signal to Interference plus Noise Ratio (English first
Text: Signal to Interference plus Noise Ratio, referred to as: SINR), it is then calculated separately and is adopted according to SINR
The spectrum efficiency transmitted with single stream mode and double-current mode, select spectrum efficiency it is high transmit.And usual center
The SINR value in domain is higher, and fringe region SINR value is lower, therefore, when user equipment is in central area, it will usually using double
Stream mode works, and while being in fringe region would generally be worked using single stream mode.
Compared with carrying out transmission using TM1 mode, the user equipment in center of housing estate can obtain 2 port TM3 mode bands
The spatial multiplex gains come, transmission performance are higher than TM1 mode.And the user in cell edge is transmitted using 2 port TM3
Performance will be lower than TM1 mode, because cell edge is worked under 2 port TM3 modes using single-stream mode, efficiency of transmission and TM1
It is close, but need to make using two cell reference signals (English: Cell Reference Signal, abbreviation: CRS) port
For pilot frequency port, for TM1 only needs the port CRS, the Pilot Interference generated is greater than TM1 mode.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems:
Since after the transmission mode of cell has been determined, the CRS port number of cell is fixed, such as when the transmission of cell
2 ports CRS are configured when the transmission mode of 1 port CRS of configuration or cell is TM3 when mode is TM1, so in cell
It is interior to configure 1 port TM1 mode and 2 port TM3 modes simultaneously, and one of which can only be configured, so that no matter which kind of uses
Mode can not all make the user equipment in center of housing estate region and fringe region while reach optimum transmission performance.
Summary of the invention
In order to solve problems in the prior art, the embodiment of the invention provides a kind of transmission mode switching method and base stations.
The technical solution is as follows:
On the one hand, the embodiment of the invention provides a kind of transmission mode switching methods, which comprises
Base station obtains the current transmission mode of user equipment, and the transmission mode includes that 1 port transmission mode and N-port pass
Defeated mode, wherein for the N-port transmission mode, the base station is that the user device configuration has N number of signal status information
The port reference signal CSI-RS, wherein N 2,4 or 8, and the antenna amount phase of the quantity of N and cell where the user equipment
Deng；
Position of the user equipment in the cell is detected in the base station, and the position includes central area and edge
Region；
When the user equipment is currently operating in the 1 port transmission mode, and the user equipment is in the center
When region, the transmission mode of the user equipment is switched to the N-port transmission mode by the base station, is the user equipment
N number of port CSI-RS is configured, and the N-port transmission mode and N number of port CSI-RS are notified to the user equipment；
Alternatively,
When the user equipment is currently operating in the N-port transmission mode, and the user equipment is in the edge
When region, the transmission mode of the user equipment is switched to the 1 port transmission mode by the base station, and by 1 port
Transmission mode is notified to the user equipment.
In an implementation of the embodiment of the present invention, position of the detection user equipment in the cell
It sets, comprising:
Detect the spectrum efficiency of the user equipment；
When the spectrum efficiency of the user equipment is greater than the first threshold value, determine that the user equipment is in the center
Region；Alternatively,
When the spectrum efficiency of the user equipment is less than or equal to first threshold value, determine at the user equipment
In the fringe region.
In another implementation of the embodiment of the present invention, the spectrum efficiency of the detection user equipment, comprising:
Obtain the channel quality that the user equipment is sent；
The spectrum efficiency of the user equipment is calculated according to the channel quality.
In another implementation of the embodiment of the present invention, position of the detection user equipment in the cell
It sets, comprising:
When the user equipment is currently operating in the N-port transmission mode, the user equipment is detected using single stream
Mode transmission proportion in always transmission duration；
When the user equipment is greater than the second threshold value using single-stream mode transmission proportion, determine that the user sets
It is standby to be in the fringe region；Alternatively,
When the user equipment is less than or equal to second threshold value using single-stream mode transmission proportion, determine
The user equipment is in the central area.
In another implementation of the embodiment of the present invention, the detection user equipment is transmitted using single-stream mode
The proportion in always transmission duration, comprising:
Record the transmission duration that the user equipment uses single-stream mode in transmission process；
The transmission duration for calculating the single-stream mode accounts for the ratio of total transmission duration, obtains the user equipment and uses
Single-stream mode transmission proportion in always transmission duration.
In another implementation of the embodiment of the present invention, the method also includes:
When the user equipment accesses cell, 1 port transmission is configured by the transmission mode of the user equipment
Mode.
On the other hand, the embodiment of the invention also provides a kind of base station, the base station includes:
Transceiver module, for being communicated with user equipment；
Module is obtained, for obtaining the current transmission mode of the user equipment, the transmission mode includes 1 port transmission
Mode and N-port transmission mode, wherein for the N-port transmission mode, the user device configuration has N number of signal condition
The port information reference signal CSI-RS, wherein N 2,4 or 8, and the antenna number of cell where the quantity of N and the user equipment
It measures equal；
Detection module, for detecting position of the user equipment in the cell, the position includes central area
And fringe region；
Processing module, for being currently operating in the 1 port transmission mode, and the user equipment when the user equipment
When in the central area, the transmission mode of the user equipment is switched into the N-port transmission mode, is the user
The N number of port CSI-RS of device configuration, and by the transceiver module by the N-port transmission mode and N number of end CSI-RS
Mouth notice is to the user equipment；Alternatively,
When the user equipment is currently operating in the N-port transmission mode, and the user equipment is in the edge
When region, the transmission mode of the user equipment is switched into the 1 port transmission mode, and pass through the transceiver module for institute
1 port transmission pattern notification is stated to the user equipment.
In an implementation of the embodiment of the present invention, the detection module includes:
First detection unit, for detecting the spectrum efficiency of the user equipment；
First determination unit, for determining the use when the spectrum efficiency of the user equipment is greater than the first threshold value
Family equipment is in the central area；Alternatively,
When the spectrum efficiency of the user equipment is less than or equal to first threshold value, determine at the user equipment
In the fringe region.
In another implementation of the embodiment of the present invention, the first detection unit includes:
Subelement is obtained, for obtaining the channel quality that the user equipment is sent by the transceiver module；
First computation subunit, for calculating the spectrum efficiency of the user equipment according to the channel quality.
In another implementation of the embodiment of the present invention, the detection module includes:
Second detection unit, for when the user equipment is currently operating in the N-port transmission mode, described in detection
User equipment transmits the proportion in always transmission duration using single-stream mode；
Second determination unit, for being greater than the second threshold value using single-stream mode transmission proportion when the user equipment
When, determine that the user equipment is in the fringe region；Alternatively,
When the user equipment is less than or equal to second threshold value using single-stream mode transmission proportion, determine
The user equipment is in the central area.
In another implementation of the embodiment of the present invention, the second detection unit includes:
Subelement is recorded, for recording the user equipment in transmission process using the transmission duration of single-stream mode；
Second computation subunit, the transmission duration for calculating the single-stream mode account for the ratio of total transmission duration,
It obtains the user equipment and proportion in duration is always being transmitted using single-stream mode transmission.
In another implementation of the embodiment of the present invention, the processing module is also used to connect when the user equipment
When entering cell, the 1 port transmission mode is configured by the transmission mode of the user equipment.
Technical solution provided in an embodiment of the present invention has the benefit that
It is center region or fringe region by position of the user equipment in the cell, when user equipment work exists
1 port transmission mode and be in central area when, the transmission mode of user equipment is switched into N-port transmission mode, be user
The N number of port CSI-RS of device configuration sets user when user equipment work is in N-port transmission mode and when being in fringe region
Standby transmission mode switches to 1 port transmission mode, so that the user equipment for being in central area transmits mould using N-port
Formula transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment for being in fringe region is passed using 1 port transmission mode
Transmission of data reduces transmission Pilot Interference.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is application scenario diagram provided in an embodiment of the present invention；
Fig. 2 is the transmission mode switching method flow chart that the embodiment of the present invention one provides；
Fig. 3 is transmission mode switching method flow chart provided by Embodiment 2 of the present invention；
Fig. 4 is the structural schematic diagram for the base station that the embodiment of the present invention three provides；
Fig. 5 is the structural schematic diagram for the base station that the embodiment of the present invention four provides；
Fig. 6 is the structural schematic diagram for the base station that the embodiment of the present invention five provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
For the ease of the description of embodiment, below first simply introduce the application scenarios of the embodiment of the present invention.Referring to figure
1, which is multiple antennas normal cells, and antenna amount can be 2,4 and 8, and cell 10 includes central area 20 and fringe region
30.It is already indicated above in the background technology: family equipment can be used using N-port transmission mode in central area 20 and obtain multiple antennas
Spatial multiplex gains, edge region 30 can reduce Pilot Interference using 1 port transmission mode.So in order to make to pass
Defeated efficiency maximizes, and needs to design a kind of transmission plan: making user equipment at central area using maximum quantity port transmission
Mode carries out data transmission, and is carried out data transmission when edge region using 1 port transmission mode.Concrete scheme sees below reality
Apply example.
For convenience of description, the embodiment of the present invention is described by taking LTE system as an example.Method provided in an embodiment of the present invention can
With in the wireless network for different standards, such as: LTE system or the subsequent evolution system of LTE etc..The base station of LTE system
For evolution base station (evolved NodeB, eNodeB).
The embodiment of the invention provides a kind of transmission mode switching methods, referring to fig. 2, this method comprises:
Step 101: base station obtains the current transmission mode of user equipment, and transmission mode includes 1 port transmission mode and N-terminal
Port transmission mode, wherein for N-port transmission mode, base station is that user device configuration has N number of signal status information reference signal
The port CSI-RS, N 2,4 or 8, and the quantity of N are equal with the antenna amount of cell where user equipment.
Wherein, 1 port transmission mode can use transmission mode 1, and N-port mode can be realized using transmission mode 9.?
When transmission mode 1, user equipment carries out channel quality detection using 1 port CRS, then determines coding staff according to channel quality
The information such as formula, and then carry out data transmission；In N-port transmission mode 9, user equipment is referred to using N number of signal status information
Signal (English: Channel State Information-Reference Signal, referred to as: CSI-RS) port progress channel
Then quality testing determines the information such as coding mode according to channel quality, while configuring 1 port CRS, the work of the port CRS
With being to send Cell Broadcast CB, user equipment can carry out downlink signal ionization meter according to the Cell Broadcast CB.
The port CRS is cell-level port, and all user equipmenies in cell configure the identical port CRS；The port CSI-RS
For user class port, base station can be respectively in cell each user equipment can configure the different ports CSI-RS.
Therefore, in the present embodiment, in order to realize that be in the user equipment of central area is carried out using N-port transmission mode
Transmission, the user equipment for being in fringe region are transmitted using 1 port transmission mode, and base station sets the user of new access cell
It is standby to be configured to transmission mode 1,1 cell-level port: the port CRS is configured under transmission mode 1；Then the position of user equipment is detected
Set, if user equipment is in central area, by user device transmissions pattern switching to transmission mode 9, and the port CRS not
In the case where change, N number of user class port: the port CSI-RS is configured.
Step 102: the position of user equipment in the cell is detected in base station, and position includes central area and fringe region.
Step 103: when user equipment is currently operating in 1 port transmission mode, and user equipment is in central area, base
It stands and the transmission mode of user equipment is switched into N-port transmission mode, be the N number of port CSI-RS of user device configuration, and by N-terminal
Port transmission mode and N number of port CSI-RS are notified to user equipment；Alternatively, when user equipment is currently operating in N-port transmission mould
The transmission mode of user equipment is switched to 1 port transmission mode by formula, and when user equipment is in fringe region, base station, and by 1
Port transmission pattern notification is to user equipment.
It specifically, is first user equipment when the transmission mode of user equipment is switched to N-port transmission mode by base station
N number of port CSI-RS is distributed, then the position of the port CSI-RS is passed through into information together with transmission mode and is sent to user and set
Standby, user equipment is transmitted according to the position of transmission mode and the port CSI-RS, and wherein the position of the port CSI-RS i.e. should
The position of the occupied running time-frequency resource in the port CSI-RS.
And when the transmission mode of user equipment is switched to 1 port transmission mode by base station, then transmission mode need to only be sent out
Give user equipment.
The embodiment of the present invention is center region or fringe region by detection user equipment position in the cell, when with
Family equipment work 1 port transmission mode and be in central area when, by the transmission mode of user equipment switch to N-port transmission
Mode is the N number of port CSI-RS of user device configuration, when user equipment works in N-port transmission mode and is in fringe region
When, the transmission mode of user equipment is switched into 1 port transmission mode, so that the user equipment for being in central area uses
N-port transmission mode transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment of fringe region is in using 1 end
Port transmission mode transmits data, reduces transmission Pilot Interference.
The embodiment of the invention provides a kind of transmission mode switching methods, referring to Fig. 3, this method comprises:
Step 201: base station obtains the current transmission mode of user equipment, and transmission mode includes 1 port transmission mode and N-terminal
Port transmission mode, wherein for N-port transmission mode, base station is that user device configuration has N number of signal status information reference signal
The port CSI-RS, N 2,4 or 8, and the quantity of N are equal with the antenna amount of cell where user equipment.
Wherein, 1 port transmission mode can use transmission mode 1, and N-port mode can be realized using transmission mode 9.?
Under transmission mode 1, user equipment carries out channel quality detection using 1 port CRS, then determines coding staff according to channel quality
The information such as formula, and then carry out data transmission；Channel quality detection is carried out using N number of port CSI-RS in N-port transmission mode 9,
Then the information such as coding mode are determined according to channel quality, while configures 1 port CRS, the effect of the port CRS is that transmission is small
Area's broadcast, user equipment can carry out downlink signal ionization meter according to the Cell Broadcast CB.
Therefore, in the present embodiment, in order to realize that be in the user equipment of central area is carried out using N-port transmission mode
Transmission, the user equipment for being in fringe region are transmitted using 1 port transmission mode, and base station sets the user of new access cell
It is standby to be configured to transmission mode 1,1 cell-level port: the port CRS is configured under transmission mode 1；Then the position of user equipment is detected
Set, if user equipment is in central area, by user device transmissions pattern switching to transmission mode 9, and the port CRS not
In the case where change, N number of user class port: the port CSI-RS is configured.Wherein, cell-level port and user class port by base station according to
Transmission mode is user device configuration, and cell-level port refers to that the user equipment in cell is similarly configured, and user
Grade port refers to that base station can carry out different configuration of port for each user respectively.
I.e. when user equipment accesses cell, 1 port transmission mode is configured by the transmission mode of user equipment.
Step 202: the spectrum efficiency of base station detection user equipment.
Specifically, step 202 can be carried out using following manner:
Base station obtains the channel quality that user equipment is sent；
Base station calculates the spectrum efficiency of user equipment according to channel quality.
Step 203: when the spectrum efficiency of user equipment is greater than the first threshold value, base station determines that user equipment is in center
Region；Alternatively, base station determines that user equipment is in edge when the spectrum efficiency of user equipment is less than or equal to the first threshold value
Region.
Further, when user equipment is currently operating in N-port transmission mode, step 202 and step 203 can also be adopted
It is carried out with following methods:
It detects user equipment and the proportion in always transmission duration is transmitted using single-stream mode in base station；
When user equipment is greater than the second threshold value using single-stream mode transmission proportion, base station is determined at user equipment
In fringe region；Alternatively, when user equipment is less than or equal to the second threshold value using single-stream mode transmission proportion, base station
Determine that user equipment is in central area.
It, can not be true using this mode due to can only work in single stream but when user job is in 1 port transmission mode
Determine user equipment and is presently in position.
Specifically, when user equipment work is under N-port transmission mode, user equipment can be using single stream and multithread mould
The foundation of formula work, user equipment selection single-stream mode or multi-stream mode is: being calculated separately according to SINR value using single-stream mode
Spectrum efficiency with when multi-stream mode work, selects the higher mode of spectrum efficiency as current operating mode.Fringe region
SINR value is low, is higher than multi-stream mode using single-stream mode spectrum efficiency, when user equipment transmits proportion using single-stream mode
When higher than the second threshold value, illustrate that it is in cell edge region, it is on the contrary then be in central area.
Wherein, detection user equipment transmits the proportion in always transmission duration using single-stream mode, comprising:
Base station records the transmission duration that user equipment uses single-stream mode in transmission process；
The transmission duration that base station calculates single-stream mode accounts for the ratio of total transmission duration, obtains user equipment using single-stream mode
Transmission proportion in always transmission duration.
Wherein, always transmission duration can be a setting value, such as when detection uses the transmission duration of single-stream mode, can
To determine the period of a detection, detection uses the transmission duration of single-stream mode within the period, when which is total transmission
It is long.
Step 204: when user equipment is currently operating in 1 port transmission mode, and user equipment is in central area, base
It stands and the transmission mode of user equipment is switched into N-port transmission mode, be the N number of port CSI-RS of user device configuration, and by N-terminal
Port transmission mode and N number of port CSI-RS are notified to user equipment；Alternatively, when user equipment is currently operating in N-port transmission mould
The transmission mode of user equipment is switched to 1 port transmission mode by formula, and when user equipment is in fringe region, base station, and by 1
Port transmission pattern notification is to user equipment.
It specifically, is first user equipment when the transmission mode of user equipment is switched to N-port transmission mode by base station
N number of port CSI-RS is distributed, then the position of the port CSI-RS is passed through into information together with transmission mode and is sent to user and set
Standby, user equipment is transmitted according to the position of transmission mode and the port CSI-RS, and wherein the position of the port CSI-RS i.e. should
The position of the occupied running time-frequency resource in the port CSI-RS.
And when the transmission mode of user equipment is switched to 1 port transmission mode by base station, then transmission mode need to only be sent out
Give user equipment.
The embodiment of the present invention is center region or fringe region by detection user equipment position in the cell, when with
Family equipment work 1 port transmission mode and be in central area when, by the transmission mode of user equipment switch to N-port transmission
Mode is the N number of port CSI-RS of user device configuration, when user equipment works in N-port transmission mode and is in fringe region
When, the transmission mode of user equipment is switched into 1 port transmission mode, so that the user equipment for being in central area uses
N-port transmission mode transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment of fringe region is in using 1 end
Port transmission mode transmits data, reduces transmission Pilot Interference.
The embodiment of the invention provides a kind of base stations, and referring to fig. 4, which includes:
Transceiver module 300, for being communicated with user equipment；
Module 301 is obtained, for obtaining the current transmission mode of user equipment, transmission mode includes 1 port transmission mode
With N-port transmission mode, wherein for N-port transmission mode, user device configuration has N number of signal status information reference signal
The port CSI-RS, N 2,4 or 8, and the quantity of N are equal with the antenna amount of cell where user equipment.
Wherein, 1 port transmission mode can use transmission mode 1, and N-port mode can be realized using transmission mode 9.?
When transmission mode 1, user equipment carries out channel quality detection using 1 port CRS, then determines coding staff according to channel quality
The information such as formula, and then carry out data transmission；In N-port transmission mode 9, user equipment carries out letter using N number of port CSI-RS
Then road quality testing determines the information such as coding mode, while 1 port CRS of configuration according to channel quality, the port CRS
Effect is to send Cell Broadcast CB, and user equipment can carry out downlink signal ionization meter according to the Cell Broadcast CB.
The port CRS is cell-level port, and all user equipmenies in cell configure the identical port CRS；The port CSI-RS
For user class port, base station can be respectively in cell each user equipment can configure the different ports CSI-RS.
Therefore, in the present embodiment, in order to realize that be in the user equipment of central area is carried out using N-port transmission mode
Transmission, the user equipment for being in fringe region are transmitted using 1 port transmission mode, and base station sets the user of new access cell
It is standby to be configured to transmission mode 1,1 cell-level port: the port CRS is configured under transmission mode 1；Then the position of user equipment is detected
Set, if user equipment is in central area, by user device transmissions pattern switching to transmission mode 9, and the port CRS not
In the case where change, N number of user class port: the port CSI-RS is configured.
Detection module 302, for detecting the position of user equipment in the cell, position includes central area and marginal zone
Domain.
Processing module 303, for being currently operating in 1 port transmission mode when user equipment, and user equipment is in center
When region, the transmission mode of user equipment is switched into N-port transmission mode, is the N number of port CSI-RS of user device configuration, and
N-port transmission mode and N number of port CSI-RS are notified to user equipment by transceiver module 300；Alternatively, when user equipment is worked as
The transmission mode of user equipment is switched to 1 end in N-port transmission mode, and when user equipment is in fringe region by preceding work
Port transmission mode, and pass through transceiver module 300 for 1 port transmission pattern notification to user equipment.
It specifically, is first user equipment when the transmission mode of user equipment is switched to N-port transmission mode by base station
N number of port CSI-RS is distributed, then the position of the port CSI-RS is passed through into information together with transmission mode and is sent to user and set
Standby, user equipment is transmitted according to the position of transmission mode and the port CSI-RS, and wherein the position of the port CSI-RS i.e. should
The position of the occupied running time-frequency resource in the port CSI-RS.
And when the transmission mode of user equipment is switched to 1 port transmission mode by base station, then transmission mode need to only be sent out
Give user equipment.
The embodiment of the present invention is center region or fringe region by detection user equipment position in the cell, when with
Family equipment work 1 port transmission mode and be in central area when, by the transmission mode of user equipment switch to N-port transmission
Mode is the N number of port CSI-RS of user device configuration, when user equipment works in N-port transmission mode and is in fringe region
When, the transmission mode of user equipment is switched into 1 port transmission mode, so that the user equipment for being in central area uses
N-port transmission mode transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment of fringe region is in using 1 end
Port transmission mode transmits data, reduces transmission Pilot Interference.
The embodiment of the invention provides a kind of base stations, and referring to Fig. 5, which includes:
Transceiver module 400, for being communicated with user equipment；
Module 401 is obtained, for obtaining the current transmission mode of user equipment, transmission mode includes 1 port transmission mode
With N-port transmission mode, wherein for N-port transmission mode, user device configuration has N number of signal status information reference signal
The port CSI-RS, N 2,4 or 8, and the quantity of N are equal with the antenna amount of cell where user equipment.
Wherein, 1 port transmission mode can use transmission mode 1, and N-port mode can be realized using transmission mode 9.?
When transmission mode 1, user equipment carries out channel quality detection using 1 port CRS, then determines coding staff according to channel quality
The information such as formula, and then carry out data transmission；In N-port transmission mode 9, user equipment carries out letter using N number of port CSI-RS
Then road quality testing determines the information such as coding mode, while 1 port CRS of configuration according to channel quality, the port CRS
Effect is to send Cell Broadcast CB, and user equipment can carry out downlink signal ionization meter according to the Cell Broadcast CB.
The port CRS is cell-level port, and all user equipmenies in cell configure the identical port CRS；The port CSI-RS
For user class port, base station can be respectively in cell each user equipment can configure the different ports CSI-RS.
Therefore, in the present embodiment, in order to realize that be in the user equipment of central area is carried out using N-port transmission mode
Transmission, the user equipment for being in fringe region are transmitted using 1 port transmission mode, and base station sets the user of new access cell
It is standby to be configured to transmission mode 1,1 cell-level port: the port CRS is configured under transmission mode 1；Then the position of user equipment is detected
Set, if user equipment is in central area, by user device transmissions pattern switching to transmission mode 9, and the port CRS not
In the case where change, N number of user class port: the port CSI-RS is configured.
Detection module 402, for detecting the position of user equipment in the cell, position includes central area and marginal zone
Domain.
Processing module 403, for being currently operating in 1 port transmission mode when user equipment, and user equipment is in center
When region, the transmission mode of user equipment is switched into N-port transmission mode, is the N number of port CSI-RS of user device configuration, and
N-port transmission mode and N number of port CSI-RS are notified to user equipment by transceiver module 400；Alternatively, when user equipment is worked as
The transmission mode of user equipment is switched to 1 end in N-port transmission mode, and when user equipment is in fringe region by preceding work
Port transmission mode, and pass through transceiver module 400 for 1 port transmission pattern notification to user equipment.
It specifically, is first user equipment when the transmission mode of user equipment is switched to N-port transmission mode by base station
N number of port CSI-RS is distributed, is then sent jointly to the position of the port CSI-RS with transmission mode by transceiver module 400
User equipment, user equipment are transmitted according to the position of transmission mode and the port CSI-RS, wherein the position of the port CSI-RS
That is the position of the occupied running time-frequency resource in the port CSI-RS.
And when the transmission mode of user equipment is switched to 1 port transmission mode by base station, then transmission mode need to only be sent out
Give user equipment.
In an implementation of the embodiment of the present invention, detection module 402 may include:
First detection unit 4021, for detecting the spectrum efficiency of user equipment；
First determination unit 4022, for determining that user sets when the spectrum efficiency of user equipment is greater than the first threshold value
It is standby to be in central area；Alternatively, being determined at user equipment when the spectrum efficiency of user equipment is less than or equal to the first threshold value
In fringe region.
Specifically, first detection unit 4021 may include:
Subelement is obtained, for obtaining the channel quality that user equipment is sent by transceiver module 400；
First computation subunit, for calculating the spectrum efficiency of user equipment using channel quality.
In another implementation of the embodiment of the present invention, detection module 402 may include:
Second detection unit, for when user equipment is currently operating in N-port transmission mode, detection user equipment to be used
Single-stream mode transmission proportion in always transmission duration；
Second determination unit is used for when user equipment is greater than the second threshold value using single-stream mode transmission proportion,
Determine that user equipment is in fringe region；Alternatively, when user equipment is less than or equal to the using single-stream mode transmission proportion
When two threshold values, determine that user equipment is in central area.
It, can not be true using this mode due to can only work in single stream but when user job is in 1 port transmission mode
Determine user equipment and is presently in position.
Specifically, when user equipment work is under N-port transmission mode, user equipment can be using single stream and multithread mould
The foundation of formula work, user equipment selection single-stream mode or multi-stream mode is: being calculated separately according to SINR value using single-stream mode
Spectrum efficiency with when multi-stream mode work, selects the higher mode of spectrum efficiency as current operating mode.Fringe region
SINR value is low, is higher than multi-stream mode using single-stream mode spectrum efficiency, when user equipment transmits proportion using single-stream mode
When higher than the second threshold value, illustrate that it is in cell edge region, it is on the contrary then be in central area.
Specifically, second detection unit may include:
Subelement is recorded, for recording user equipment in transmission process using the transmission duration of single-stream mode；
Second computation subunit, the transmission duration for calculating single-stream mode account for the ratio of total transmission duration, obtain user
Equipment transmits the proportion in always transmission duration using single-stream mode.
Wherein, always transmission duration can be a setting value, such as when detection uses the transmission duration of single-stream mode, can
To determine the period of a detection, detection uses the transmission duration of single-stream mode within the period, when which is total transmission
It is long.
Further, processing module 403 are also used to when user equipment accesses cell, by the transmission mode of user equipment
It is configured to 1 port transmission mode.
The embodiment of the present invention is center region or fringe region by detection user equipment position in the cell, when with
Family equipment work 1 port transmission mode and be in central area when, by the transmission mode of user equipment switch to N-port transmission
Mode is the N number of port CSI-RS of user device configuration, when user equipment works in N-port transmission mode and is in fringe region
When, the transmission mode of user equipment is switched into 1 port transmission mode, so that the user equipment for being in central area uses
N-port transmission mode transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment of fringe region is in using 1 end
Port transmission mode transmits data, reduces transmission Pilot Interference.
The embodiment of the invention provides a kind of base stations, and referring to Fig. 6, which includes: processor 501, memory 502, receives
Send out device 503 and bus；Memory 502 is connected for storing computer executed instructions, processor 501 and memory 502 by bus
It connects, when base station operation, processor 501 executes the computer executed instructions that memory 502 stores, so that base station executes such as Fig. 1
Or transmission mode switching method described in Fig. 2.
Specifically, processor 501 includes 1 port transmission for obtaining the current transmission mode of user equipment, transmission mode
Mode and N-port transmission mode, wherein for N-port transmission mode, user device configuration has N number of signal status information to refer to
The port signal CSI-RS, N 2,4 or 8, and the quantity of N are equal with the antenna amount of cell where user equipment.
Wherein, 1 port transmission mode can use transmission mode 1, and N-port mode can be realized using transmission mode 9.?
When transmission mode 1, user equipment carries out channel quality detection using 1 port CRS, then determines coding staff according to channel quality
The information such as formula, and then carry out data transmission；In N-port transmission mode 9, user equipment carries out letter using N number of port CSI-RS
Then road quality testing determines the information such as coding mode, while 1 port CRS of configuration according to channel quality, the port CRS
Effect is to send Cell Broadcast CB, and user equipment can carry out downlink signal ionization meter according to the Cell Broadcast CB.
The port CRS is cell-level port, and all user equipmenies in cell configure the identical port CRS；The port CSI-RS
For user class port, base station can be respectively in cell each user equipment can configure the different ports CSI-RS.
Therefore, in the present embodiment, in order to realize that be in the user equipment of central area is carried out using N-port transmission mode
Transmission, the user equipment for being in fringe region are transmitted using 1 port transmission mode, and base station sets the user of new access cell
It is standby to be configured to transmission mode 1,1 cell-level port: the port CRS is configured under transmission mode 1；Then the position of user equipment is detected
Set, if user equipment is in central area, by user device transmissions pattern switching to transmission mode 9, and the port CRS not
In the case where change, N number of user class port: the port CSI-RS is configured.
Processor 501, is also used to detect the position of user equipment in the cell, and position includes central area and marginal zone
Domain.
Processor 501 is also used to be currently operating in 1 port transmission mode when user equipment, and user equipment is in center
When region, the transmission mode of user equipment is switched into N-port transmission mode, is the N number of port CSI-RS of user device configuration, and
N-port transmission mode and N number of port CSI-RS are notified to user equipment by transceiver 503；Alternatively, when user equipment is current
The transmission mode of user equipment is switched to 1 port in N-port transmission mode, and when user equipment is in fringe region by work
Transmission mode, and pass through transceiver 503 for 1 port transmission pattern notification to user equipment.
Specifically, when the transmission mode of user equipment is switched to N-port transmission mode by processor 501, first for
Family equipment distributes N number of port CSI-RS, then passes through transceiver 503 for the position of the port CSI-RS and one starting of transmission mode
User equipment is given, user equipment transmitted according to the position of transmission mode and the port CSI-RS, wherein the port CSI-RS
The position i.e. position of the occupied running time-frequency resource in the port CSI-RS.
And when the transmission mode of user equipment is switched to 1 port transmission mode by processor 501, then it need to will only transmit mould
Formula is sent to user equipment.
In an implementation of the embodiment of the present invention, processor 501 can detect user equipment in the following manner
Position in the cell:
The spectrum efficiency of the detection user equipment of processor 501；
When the spectrum efficiency of user equipment is greater than the first threshold value, determine that user equipment is in central area；Alternatively, working as
When the spectrum efficiency of user equipment is less than or equal to the first threshold value, determine that user equipment is in fringe region.
Specifically, processor 501 can detect the spectrum efficiency of user equipment in the following manner:
Processor 501 obtains the channel quality that user equipment is sent by transceiver 503；
The spectrum efficiency of user equipment is calculated using channel quality.
In another implementation of the embodiment of the present invention, processor 501 can detect in the following manner user and set
Standby position in the cell:
When user equipment is currently operating in N-port transmission mode, processor 501 detects user equipment and uses single-stream mode
Transmission proportion in always transmission duration；
When user equipment is greater than the second threshold value using single-stream mode transmission proportion, determine that user equipment is in side
Edge region；Alternatively, determining user when user equipment is less than or equal to the second threshold value using single-stream mode transmission proportion
Equipment is in central area.
It, can not be true using this mode due to can only work in single stream but when user job is in 1 port transmission mode
Determine user equipment and is presently in position.
Specifically, when user equipment work is under N-port transmission mode, user equipment can be using single stream and multithread mould
The foundation of formula work, user equipment selection single-stream mode or multi-stream mode is: being calculated separately according to SINR value using single-stream mode
Spectrum efficiency with when multi-stream mode work, selects the higher mode of spectrum efficiency as current operating mode.Fringe region
SINR value is low, is higher than multi-stream mode using single-stream mode spectrum efficiency, when user equipment transmits proportion using single-stream mode
When higher than the second threshold value, illustrate that it is in cell edge region, it is on the contrary then be in central area.
Specifically, processor 501 can be detected user equipment in the following manner and be transmitted using single-stream mode transmission always
Proportion in duration:
Processor 501 records the transmission duration that user equipment uses single-stream mode in transmission process；
The transmission duration for calculating single-stream mode accounts for the ratio of total transmission duration, obtains user equipment and is transmitted using single-stream mode
The proportion in always transmission duration.
Wherein, always transmission duration can be a setting value, such as when detection uses the transmission duration of single-stream mode, can
To determine the period of a detection, detection uses the transmission duration of single-stream mode within the period, when which is total transmission
It is long.
Further, processor 501 are also used to match the transmission mode of user equipment when user equipment accesses cell
It is set to 1 port transmission mode.
The embodiment of the present invention is center region or fringe region by detection user equipment position in the cell, when with
Family equipment work 1 port transmission mode and be in central area when, by the transmission mode of user equipment switch to N-port transmission
Mode is the N number of port CSI-RS of user device configuration, when user equipment works in N-port transmission mode and is in fringe region
When, the transmission mode of user equipment is switched into 1 port transmission mode, so that the user equipment for being in central area uses
N-port transmission mode transmits data, obtains the spatial multiplex gains of multiple antennas；The user equipment of fringe region is in using 1 end
Port transmission mode transmits data, reduces transmission Pilot Interference.
It should be understood that base station provided by the above embodiment is when switching transmission mode, only with above-mentioned each functional module
Division progress for example, in practical application, can according to need and above-mentioned function distribution is complete by different functional modules
At the internal structure of equipment being divided into different functional modules, to complete all or part of the functions described above.Separately
Outside, base station provided by the above embodiment and transmission mode switching method embodiment belong to same design, and specific implementation process is detailed
See embodiment of the method, which is not described herein again.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of transmission mode switching method, which is characterized in that the described method includes:
Base station obtains the current transmission mode of user equipment, and the transmission mode includes that 1 port transmission mode and N-port transmit mould
Formula, wherein for the N-port transmission mode, the base station is that the user device configuration has N number of signal status information to refer to
The port signal CSI-RS, wherein N 2,4 or 8, and the quantity of N is equal with the antenna amount of cell where the user equipment,
Under the 1 port transmission mode, the port cell reference signals CRS is configured, under the N-port transmission mode, configure one
The port CRS；
Position of the user equipment in the cell is detected in the base station, and the position includes central area and marginal zone
Domain；
When the user equipment is currently operating in the 1 port transmission mode, and the user equipment is in the central area
When, the transmission mode of the user equipment is switched to the N-port transmission mode by the base station, is the user device configuration
N number of port CSI-RS, and the N-port transmission mode and N number of port CSI-RS are notified to the user equipment；Or
Person,
When the user equipment is currently operating in the N-port transmission mode, and the user equipment is in the fringe region
When, the transmission mode of the user equipment is switched to the 1 port transmission mode by the base station, and by 1 port transmission
Pattern notification gives the user equipment.
2. the method according to claim 1, wherein position of the detection user equipment in the cell
It sets, comprising:
Detect the spectrum efficiency of the user equipment；
When the spectrum efficiency of the user equipment is greater than the first threshold value, determine that the user equipment is in the center
Domain；Alternatively,
When the spectrum efficiency of the user equipment is less than or equal to first threshold value, determine that the user equipment is in institute
State fringe region.
3. according to the method described in claim 2, it is characterized in that, the spectrum efficiency of the detection user equipment, comprising:
Obtain the channel quality that the user equipment is sent；
The spectrum efficiency of the user equipment is calculated according to the channel quality.
4. the method according to claim 1, wherein position of the detection user equipment in the cell
It sets, comprising:
When the user equipment is currently operating in the N-port transmission mode, the user equipment is detected using single-stream mode
Transmission proportion in always transmission duration；
When the user equipment is greater than the second threshold value using single-stream mode transmission proportion, determine at the user equipment
In the fringe region；Alternatively,
When the user equipment is less than or equal to second threshold value using single-stream mode transmission proportion, described in determination
User equipment is in the central area.
5. according to the method described in claim 4, it is characterized in that, the detection user equipment is transmitted using single-stream mode
The proportion in always transmission duration, comprising:
Record the transmission duration that the user equipment uses single-stream mode in transmission process；
The transmission duration for calculating the single-stream mode accounts for the ratio of total transmission duration, obtains the user equipment using single stream
Mode transmission proportion in always transmission duration.
6. described in any item methods according to claim 1~5, which is characterized in that the method also includes:
When the user equipment accesses cell, the 1 port transmission mode is configured by the transmission mode of the user equipment.
7. a kind of base station, which is characterized in that the base station includes:
Transceiver module, for being communicated with user equipment；
Module is obtained, for obtaining the current transmission mode of the user equipment, the transmission mode includes 1 port transmission mode
With N-port transmission mode, wherein for the N-port transmission mode, the user device configuration has N number of signal status information
The port reference signal CSI-RS, wherein N 2,4 or 8, and the antenna amount phase of the quantity of N and cell where the user equipment
Deng, under the 1 port transmission mode, configure the port cell reference signals CRS, under the N-port transmission mode, configuration one
A port CRS；
Detection module, for detecting position of the user equipment in the cell, the position includes central area and side
Edge region；
Processing module, for being currently operating in the 1 port transmission mode when the user equipment, and the user equipment is in
When the central area, the transmission mode of the user equipment is switched into the N-port transmission mode, is the user equipment
N number of port CSI-RS is configured, and is led to the N-port transmission mode and N number of port CSI-RS by the transceiver module
Know to the user equipment；Alternatively,
When the user equipment is currently operating in the N-port transmission mode, and the user equipment is in the fringe region
When, the transmission mode of the user equipment is switched into the 1 port transmission mode, and pass through the transceiver module for described 1
Port transmission pattern notification gives the user equipment.
8. base station according to claim 7, which is characterized in that the detection module includes:
First detection unit, for detecting the spectrum efficiency of the user equipment；
First determination unit, for determining that the user sets when the spectrum efficiency of the user equipment is greater than the first threshold value
It is standby to be in the central area；Alternatively,
When the spectrum efficiency of the user equipment is less than or equal to first threshold value, determine that the user equipment is in institute
State fringe region.
9. base station according to claim 8, which is characterized in that the first detection unit includes:
Subelement is obtained, for obtaining the channel quality that the user equipment is sent by the transceiver module；
First computation subunit, for calculating the spectrum efficiency of the user equipment according to the channel quality.
10. base station according to claim 7, which is characterized in that the detection module includes:
Second detection unit, for detecting the user when the user equipment is currently operating in the N-port transmission mode
Equipment transmits the proportion in always transmission duration using single-stream mode；
Second determination unit is used for when the user equipment is greater than the second threshold value using single-stream mode transmission proportion,
Determine that the user equipment is in the fringe region；Alternatively,
When the user equipment is less than or equal to second threshold value using single-stream mode transmission proportion, described in determination
User equipment is in the central area.
11. base station according to claim 10, which is characterized in that the second detection unit includes:
Subelement is recorded, for recording the user equipment in transmission process using the transmission duration of single-stream mode；
Second computation subunit, the transmission duration for calculating the single-stream mode account for the ratio of total transmission duration, obtain
The user equipment transmits the proportion in always transmission duration using single-stream mode.
12. according to the described in any item base stations of claim 7~11, which is characterized in that the processing module is also used to when described
When user equipment accesses cell, the 1 port transmission mode is configured by the transmission mode of the user equipment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/090236 WO2016070321A1 (en) | 2014-11-04 | 2014-11-04 | Transmission mode switching method and base station |
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| CN105766024A CN105766024A (en) | 2016-07-13 |
| CN105766024B true CN105766024B (en) | 2019-01-15 |
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| CN110661557B (en) * | 2018-06-29 | 2021-08-24 | 中兴通讯股份有限公司 | Method, device and storage medium for mode switching based on MUMIMO |
| CN111787629B (en) * | 2019-04-03 | 2022-01-28 | 大唐移动通信设备有限公司 | Multi-user pairing processing method and device after mode switching |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888624A (en) * | 2010-06-11 | 2010-11-17 | 中兴通讯股份有限公司 | Configuration method and device for selecting transmitting antennae |
| CN102714848A (en) * | 2010-01-16 | 2012-10-03 | 夏普株式会社 | Transmission power control on a wireless communication device for a plurality of regulated bands or component carriers, computer-readable medium and method thereof |
| CN103179619A (en) * | 2013-04-07 | 2013-06-26 | 北京邮电大学 | Self-adapting switching method and device of transmission mode of LTE (Long Term Evolution) multi-antenna system |
| WO2014121471A1 (en) * | 2013-02-06 | 2014-08-14 | 华为技术有限公司 | Method, base station and user equipment for data transmission and acquisition |
-
2014
- 2014-11-04 CN CN201480037475.6A patent/CN105766024B/en active Active
- 2014-11-04 WO PCT/CN2014/090236 patent/WO2016070321A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714848A (en) * | 2010-01-16 | 2012-10-03 | 夏普株式会社 | Transmission power control on a wireless communication device for a plurality of regulated bands or component carriers, computer-readable medium and method thereof |
| CN101888624A (en) * | 2010-06-11 | 2010-11-17 | 中兴通讯股份有限公司 | Configuration method and device for selecting transmitting antennae |
| WO2014121471A1 (en) * | 2013-02-06 | 2014-08-14 | 华为技术有限公司 | Method, base station and user equipment for data transmission and acquisition |
| CN103179619A (en) * | 2013-04-07 | 2013-06-26 | 北京邮电大学 | Self-adapting switching method and device of transmission mode of LTE (Long Term Evolution) multi-antenna system |
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| WO2016070321A1 (en) | 2016-05-12 |
| CN105766024A (en) | 2016-07-13 |
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