CN106452683A - Method for switching different transmission modes in LTE-A (Long Term Evolution-Advanced) system and base station - Google Patents

Abstract

The present invention provides a method for switching different transmission modes in an LTE-A system and a base station, relates to the field of communication technology, and solves the problem that different transmission modes cannot be configured according to the performance of the UE in the LTE-A system in the prior art, thereby reducing the problem of user experience. The handover method includes that the base station obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, where N∈{2,4,8}; the base station counts the total number of the first UE and the second UE in the coverage area The total number, wherein the first total number of UEs is the total number of UEs in the coverage of the base station, and the second total number of UEs is the total number of UEs with 8 ports supported by the base station in the coverage area; and calculate the ratio of the second total number of UEs to the first UE total number ; When the ratio of the total number of second UEs to the total number of UEs>the first preset threshold K1, the base station switches to the transmission mode TM9, where 0<K1≤1. The embodiments of the present invention are used for switching between different transmission modes in the LTE-A system.

Description

A method and base station for switching between different transmission modes in an LTE-A system

technical field

The present invention relates to the field of communication technology, in particular to a method for switching different transmission modes in an LTE-A system and a base station.

Background technique

With the advancement of science and technology, the upgraded version of Long Term Evolution (English full name: Long Term Evolution, referred to as: LTE-A) has gradually entered people's lives; in actual deployment, the LTE-A system needs to be compatible with the transmission mode (English full name : Transmission Mode, referred to as TM) is the user equipment (English full name: User Equipment, referred to as: UE) of TM9, so the LTE-A system needs to introduce channel state information measurement pilot (English full name: Channel-State Information-Reference Symbol, referred to as : CSI-RS); and in order to be compatible with UEs whose transmission mode is TM3 or TM4, the LTE-A system needs to retain the CRS structure supporting TM3 and TM4; among them, the UE supporting TM3 adopts the Third Generation Partnership Project (English full name : 3rd Generation Partnership Project, referred to as: 3GPP) protocol version 8 (English full name Release8, referred to as: R8), the UE supporting TM4 adopts R9, and the UE supporting TM9 adopts R10.

When the existing LTE-A system runs with TM9, the UE using TM3 or TM4 in the LTE-A system cannot recognize the information sent by the LTE-A system to the UE through the CSI-RS, so the corresponding CSI-RS mapping method is also It cannot be recognized by TM3 or TM4 UE. When the UE adopts TM3 or TM4, the physical downlink shared channel (English full name: PhysicalDownlink Shared Channel, abbreviated: PDSCH) is still in accordance with the introduction in R8 or R9 when matching the transmission rate. In other words, PDSCH transmission does not avoid the time-frequency resources occupied by CSI-RS (English full name: Resource Block, abbreviated as: RB) during mapping, so that when the LTE-A system uses TM9 to run, the LTE - UEs using TM3 or TM4 in the A system cannot obtain RB resource gain; and when the LTE-A system uses TM3 or TM4 to operate, the UE uses the CRS structure to exchange data, while the UE using TM9 cannot recognize the mapping method of the CRS. Therefore, UEs adopting TM9 in the LTE-A system cannot obtain RB resource gain, thereby degrading user experience.

It can be seen from the above that when the LTE-A system in the prior art operates with TM9, UEs using TM3 or TM4 in the LTE-A system cannot obtain RB resource gains; or when the LTE-A system operates with TM3 or TM4, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Contents of the invention

Embodiments of the present invention provide a switching method and base station for different transmission modes in the LTE-A system, which solves the problem that UEs using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the UE using TM9 in the LTE-A system cannot obtain RB resource gain.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect, an embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, including:

The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8};

The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area is 8 the total number of UEs; and calculate the first ratio of the second total number to the first total number;

When the first ratio>the first preset threshold K1, the base station switches to the transmission mode TM9, where 0<K1≦1.

Specifically, the method also includes:

When the first ratio ≤ the first preset threshold K1, the base station switches to TM3 or TM4.

specific,

After the base station is switched to TM3, it also includes:

The base station sends a cell reference signal CRS to each UE in the communication cell within the coverage area, and each UE performs channel estimation after receiving the CRS, and obtains the channel estimation result;

Each UE reports a rank indication RI to the base station according to the channel estimation result, and the base station calculates the time-frequency resource RB allocated to each UE according to the RI.

specific,

After the base station is switched to TM4, it also includes:

The base station sends a cell reference signal CRS to each UE in the communication cell within the coverage area, and each UE performs channel estimation after receiving the CRS, and obtains the channel estimation result;

Each UE reports a rank indication RI to the base station according to the channel estimation result, and the base station calculates the RB allocated to each UE according to the RI.

Specifically, after the base station is switched to TM9, it also includes:

The base station sends channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage area, and each UE performs channel estimation after receiving the CSI-RS, and obtains the channel estimation result;

Each UE uploads the throughput to the base station according to the channel estimation result;

The base station obtains the first total throughput of the UE in each communication cell within the coverage of the base station before switching to TM9;

The base station obtains the second total throughput of the UE in each communication cell within the coverage of the base station after switching to TM9;

The base station calculates the absolute value of the difference between the first total throughput and the second total throughput;

When the absolute value of any communication cell>the second preset threshold K2, the base station maintains the current TM9;

When the absolute value of any communication cell ≤ the second preset threshold K2, the base station switches to TM3 or TM4, where K2>0.

Specifically, after the base station is switched to TM9, it also includes:

The base station sends channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage area. After receiving the CSI-RS, each UE performs channel estimation to obtain the channel estimation result. Each UE sends the channel estimation result to the base station according to the channel estimation result Upload RI;

The base station counts the third total number of UEs supporting TM9 and RI greater than 4 within the coverage area;

The base station calculates a second ratio of the third total to the first total;

When the second ratio>the third preset threshold K3, the base station keeps the current TM9;

When the second ratio≦the third preset threshold K3, the base station switches to TM3 or TM4, where 0≦K3≦1.

Specifically, the method also includes:

The base station counts the fourth total number of UEs supporting TM3 and supporting TM4 within the coverage area;

The base station counts the fifth total number of UEs supporting TM9 within the coverage area;

The base station calculates a third ratio between the fourth total and the fifth total, and adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio.

Specifically, after adjusting the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio, it also includes:

The base station adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UEs within the coverage area.

Specifically, the method also includes:

The base station counts the transmission modes and RI supported by the UE within the coverage;

When it is confirmed that the UE supports TM9 and RI>5, the base station searches for the spectrum efficiency according to the CQI uploaded by the UE, selects the modulation and decoding mode MCS according to the spectrum efficiency, and allocates RB resources.

Specifically, after the base station counts the transmission mode and RI supported by the UE within the coverage area, it also includes:

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information at the N-1th moment, and calculates the UE's moving speed, when the UE's moving speed > the fourth preset threshold K4 , the base station switches to TM3, and sends radio resource control RRC information to the UE;

or

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information of the N-1th moment, and calculates the moving speed of the UE. When the moving speed of the UE≤K4, the base station sends an offline The control information DCI is sent to the UE, the base station is handed over to TM4, and sends radio resource control RRC information to the UE.

In a second aspect, an embodiment of the present invention provides a base station, including:

The data unit is used to obtain the transmission mode supported by each UE in the coverage area and the number of supported ports N, where N∈{2,4,8};

The statistical unit is used to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit; wherein the first total number is the total number of UEs within the coverage of the base station , the second total number is the total number of UEs with 8 ports supported by the base station within the coverage;

A calculation unit, configured to calculate the first ratio of the second total to the first total according to the first total and the second total counted by the statistical unit;

A discrimination unit, configured to determine the magnitude of the first ratio calculated by the calculation unit and the first preset threshold K1, where 0<K1≤1;

The switching unit is configured to switch to the transmission mode TM9 when the judging unit judges that the first ratio>K1.

Specifically, the switching unit is further configured to switch to the transmission mode TM3 or TM4 when the judging unit determines that the first ratio ≤ K1.

Specifically, after the switching unit is switched to TM3, the base station further includes:

A signal sending unit, configured to send a cell reference signal CRS to each UE in a communication cell within the coverage for channel estimation;

An information receiving unit, configured to receive the rank indication RI reported by each UE according to the CRS sent by the signal sending unit;

The resource allocation unit is configured to calculate the time-frequency resource RB allocated to each UE according to the RI received by the information receiving unit.

Specifically, after the switching unit is switched to TM4, the base station further includes:

A signal sending unit, configured to send a cell reference signal CRS to each UE in a communication cell within the coverage for channel estimation;

An information receiving unit, configured to receive the rank indication RI reported by each UE according to the CRS sent by the signal sending unit;

The resource allocation unit is configured to calculate the time-frequency resource RB allocated to each UE according to the RI received by the information receiving unit.

specific,

After the switching unit is switched to TM9, the base station also includes:

A signal sending unit, configured to send channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage for channel estimation;

a signal receiving unit, configured to receive the throughput reported by each UE according to the CSI-RS sent by the signal sending unit;

The data unit is also used to obtain the throughput of each UE received by the signal receiving unit;

The statistical unit is also used to count the first total throughput of the UE in each communication cell within the coverage before the switching unit switches to TM9 according to the throughput of each UE obtained by the data unit;

The statistical unit is also used to count the second total throughput of the UE in each communication cell within the coverage after the switching unit switches to TM9 according to the throughput of each UE obtained by the data unit;

The calculation unit is also used to calculate the absolute value of the difference between the first total throughput and the second total throughput according to the first total throughput and the second total throughput counted by the statistical unit;

The discrimination unit is also used to determine the magnitude of the absolute value calculated by the calculation unit and the second preset threshold, wherein K2>0;

The switching unit is also used to keep the current TM9 when the judging unit determines that the absolute value>the second preset threshold K2;

The switching unit is also used to switch to TM3 or TM4 when the judging unit determines that the absolute value ≤ the second preset threshold K2.

Specifically, after the switching unit is switched to TM9, the base station further includes:

A signal sending unit, configured to send channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage for channel estimation;

a signal receiving unit, configured to receive the RI reported by each UE according to the CSI-RS sent by the signal sending unit;

The data unit is also used to obtain the RI uploaded by each UE received by the signal receiving unit;

The statistical unit is also used to count the third total number of UEs that support TM9 and have RI greater than 4 according to the RI uploaded by each UE obtained by the data unit and the transmission mode supported by each UE;

The calculation unit is also used to calculate the second ratio of the third total to the first total according to the third total counted by the statistical unit;

The discrimination unit is also used to determine the magnitude of the second ratio calculated by the calculation unit and the third preset threshold K3, where 0≤K3≤1;

The switching unit is also used to keep the current TM9 when the judging unit judges that the second ratio>K3;

The switching unit is also used to switch to TM3 or TM4 when the judging unit judges that the second ratio ≤ K3.

Specifically, the statistical unit is also used to count the fourth total number of UEs supporting TM3 and supporting TM4 within the coverage according to the transmission mode supported by each UE within the coverage acquired by the data unit;

The statistics unit is also used to count the fifth total number of UEs supporting TM9 in the coverage area according to the transmission mode supported by each UE in the coverage area acquired by the data unit;

The calculation unit is also used to calculate the third ratio of the fourth total to the fifth total according to the fourth total and the fifth total counted by the statistical unit;

The base station also includes:

The resource allocation unit is configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio calculated by the calculation unit.

Specifically, the resource allocation unit is also configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UE within the coverage area to adjust the RB resources allocated to TM3 and TM4 and the allocation RB resource for TM9.

Specifically, the statistical unit is also used to count the transmission mode and RI supported by the UE within the coverage;

The judging unit is also used to judge whether the UE supports TM9 and whether the RI is greater than 5 according to the transmission mode and RI supported by the UE in the coverage area counted by the statistical unit;

The base station also includes:

The control unit is used for determining that the UE supports TM9 and RI>5, the control unit searches for the spectral efficiency according to the CQI uploaded by the UE, and selects the modulation and decoding mode MCS according to the spectral efficiency;

The resource allocation unit is further configured to allocate RB resources according to the MCS selected by the control unit.

Specifically, the base station further includes a map unit, configured to provide location information of the UE at the Nth moment, where N≥1 and N is an integer;

The map unit is also used to provide the location information of the UE at the Nth moment and the location information of the N-1th moment when the judging unit determines that the UE supports TM9 and RI≤5;

The calculation unit is further configured to calculate the moving speed of the UE according to the location information of the UE at the Nth moment and the location information at the N-1th moment provided by the map unit;

The judging unit is also used to judge the moving speed of the UE calculated by the computing unit and the magnitude of the fourth preset threshold K4, where K4>0;

The switching unit is also used to switch to TM3 when the judging unit determines that the moving speed of the UE is >K4;

The signal sending unit is also used to send the radio resource control RRC information to the UE when the switching unit is switched to TM3;

The signal receiving unit is also used to receive the RI uploaded by the UE;

or

The switching unit is also used to switch to TM4 when the judging unit determines that the moving speed of the UE is ≤ K4;

The signal sending unit is also used to send the radio resource control RRC information to the UE when the switching unit is switched to TM4;

The signal receiving unit is further configured to receive the RI uploaded by the UE.

Embodiments of the present invention provide a switching method and a base station for different transmission modes in an LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number N of ports supported, and counts the first total and the second total, Wherein the first total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second When the ratio of the total number to the first total number>K1, the base station switches to the transmission mode TM9, where 0<K1≤1; thus the base station can turn on different transmission mode, so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE- The problem that UEs using TM9 in system A cannot obtain RB resource gain.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flow chart of a method for switching between different transmission modes in an LTE-A system provided by an embodiment of the present invention;

FIG. 2 is another flow chart of a method for switching between different transmission modes in an LTE-A system provided by an embodiment of the present invention;

FIG. 3 is another flow chart of a method for switching between different transmission modes in an LTE-A system provided by an embodiment of the present invention;

FIG. 4 is another flow chart of a method for switching between different transmission modes in an LTE-A system according to an embodiment of the present invention;

FIG. 5 is another flow chart of a method for switching between different transmission modes in an LTE-A system according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a base station provided by an embodiment of the present invention;

FIG. 7 is another schematic structural diagram of a base station provided by an embodiment of the present invention;

FIG. 8 is another schematic structural diagram of a base station provided by an embodiment of the present invention.

Reference signs:

base station-10;

Data Unit - 1010;

Statistics Unit-1020;

computing unit-1030;

Discrimination unit-1040;

switching unit-1050;

Signal sending unit-1060;

Information receiving unit-1070;

Resource allocation unit - 1080;

map unit - 1090;

Control unit - 1110.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiments of the present invention provide a switching method and a base station for different transmission modes in an LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number N of ports supported, and counts the first total and the second total, Wherein the first total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second When the ratio of the total number to the first total number>K1, the base station switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the ratio of the transmission mode supported by the UE to the total number of UEs within the coverage transmission mode, thereby solving the problem that in the prior art, when the LTE-A system uses TM9 to run, UEs using TM3 or TM4 in the LTE-A system cannot obtain RB resource gains; or when the LTE-A system uses TM3 or TM4 to run, LTE- The problem that UEs using TM9 in system A cannot obtain RB resource gain.

Embodiment 1. The embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 1 , including:

S101. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

S102. The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; wherein the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area. 8 total number of UEs.

S103. Calculate a first ratio of the second total number to the first total number.

S104. When the first ratio>the first preset threshold K1, the base station switches to the transmission mode TM9, where 0<K1≤1.

It should be noted that not all UEs within the coverage of the base station support TM9, and the number of UEs supporting TM3 mode and UEs supporting TM4 mode is smaller than that of UEs supporting TM9 mode; To determine whether the base station switches to TM9, to ensure the user experience of the UE supporting TM9 mode.

The embodiment of the present invention provides a method for switching between different transmission modes in the LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, and counts the first total and the second total, where the first A total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second total number accounts for When the proportion of the first total number>K1, the base station switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs in the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Embodiment 2. The embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, as shown in FIGS. 2 and 3. The specific implementation is as follows:

Scenario 1. Embodiments of the present invention provide a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 2 , including:

S1011. The base station acquires the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

S1021. The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; wherein the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area. 8 total number of UEs.

S1031. Calculate a first ratio of the second total number to the first total number.

S1041. When the first ratio≤the first preset threshold K1, the base station switches to TM3, where 0<K1≤1.

It should be noted that not all UEs within the coverage of the base station support TM3, and the number of UEs supporting TM4 mode and UEs supporting TM9 mode is smaller than that of UEs supporting TM3 mode; therefore, the number of UEs supporting TM3 mode needs to be To determine whether the base station switches to TM3, to ensure the user experience of the UE supporting TM3 mode.

Specifically, after the base station is switched to TM3, it also includes:

The base station sends the cell reference signal CRS to each UE in the communication cell within the coverage area, and each UE performs channel estimation after receiving the CRS, and obtains the channel estimation result; each UE reports the rank indication RI to the base station according to the channel estimation result, and the base station The time-frequency resource RB allocated to each UE is calculated according to the RI.

It should be noted that the base station here can also be called an evolved Node B (full name in English: Evolved NodeB, abbreviation: eNodeB); the communication cell within the coverage of the base station sends a cell reference signal CRS to each UE, and only supports TM4 Only the terminal can receive the CRS, and perform channel estimation according to the CRS.

The embodiment of the present invention provides a method for switching between different transmission modes in the LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, and counts the first total and the second total, where the first A total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second total number accounts for When the proportion of the first total number≤K1, the base station switches to the transmission mode TM3, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Scenario 2. Embodiments of the present invention provide a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 3 , including:

S1012. The base station acquires the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

S1022. The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; wherein the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area. 8 total number of UEs.

S1032. Calculate a first ratio of the second total number to the first total number.

S1042. When the first ratio≤the first preset threshold K1, the base station switches to TM4, where 0<K1≤1.

It should be noted that not all UEs within the coverage of the base station support TM4, and the number of UEs supporting TM3 mode and UEs supporting TM9 mode is smaller than that of UEs supporting TM4 mode; therefore, the number of UEs supporting TM4 mode needs to be To determine whether the base station switches to TM4, to ensure the user experience of the UE supporting TM4 mode.

Specifically, after the base station is switched to TM4, it also includes:

The base station sends the cell reference signal CRS to each UE in the communication cell within the coverage area, and each UE performs channel estimation after receiving the CRS, and obtains the channel estimation result; each UE reports the rank indication RI to the base station according to the channel estimation result, and the base station The RBs allocated to each UE are calculated according to the RI.

It should be noted that the communication cell within the coverage of the base station sends a cell reference signal CRS to each UE, and only terminals supporting TM4 can receive the CRS and perform channel estimation based on the CRS.

The embodiment of the present invention provides a method for switching between different transmission modes in the LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, and counts the first total and the second total, where the first A total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second total number accounts for When the proportion of the first total number≤K1, the base station switches to the transmission mode TM4, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE within the coverage area to the total number of UEs , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Embodiment 3. The embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 4 and FIG. 5. The specific implementation methods are as follows:

Scenario 1. The embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 4 , including:

S1013. The base station acquires the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

S1023. The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; wherein the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area. 8 total number of UEs.

S1033. Calculate a first ratio of the second total number to the first total number.

S1043. When the first ratio>the first preset threshold K1, the base station switches to the transmission mode TM9, where 0<K1≤1.

It should be noted that not all UEs within the coverage of the base station support TM9, and the number of UEs supporting TM3 mode and UEs supporting TM4 mode is smaller than that of UEs supporting TM9 mode; To determine whether the base station switches to TM9, to ensure the user experience of the UE supporting TM9 mode.

S1053. The base station sends channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage area. After receiving the CSI-RS, each UE performs channel estimation and obtains the channel estimation result. Each UE estimates the channel according to the Result upload throughput to base station.

It should be noted that the communication cell within the coverage of the base station sends a cell reference signal CRS to each UE, and only terminals supporting TM4 can receive the CRS and perform channel estimation based on the CRS.

S1063. The base station acquires the first total throughput of the UE in each communication cell within the coverage of the base station before switching to TM9.

S1073. The base station acquires the second total throughput of the UE in each communication cell within the coverage of the base station after switching to TM9.

S1083. The base station calculates the absolute value of the difference between the first total throughput and the second total throughput;

S1093. When the absolute value of any communication cell>the second preset threshold K2, the base station maintains the current TM9, where K2>0.

Specifically, when the absolute value of any communication cell ≤ the second preset threshold K2, the base station switches to TM3 or TM4.

S1103. The base station counts the fourth total number of UEs supporting TM3 and TM4 within the coverage.

S1113. The base station counts the fifth total number of UEs supporting TM9 within the coverage.

S1123. The base station calculates a third ratio between the fourth total and the fifth total, and adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio.

Specifically, after adjusting the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio, it also includes:

The base station adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UEs within the coverage area.

S1133. The base station counts the transmission modes and RI supported by the UE within the coverage;

S1143. When confirming that the UE supports TM9 and RI>5, the base station searches for spectrum efficiency according to the CQI uploaded by the UE, selects a modulation and decoding scheme MCS according to the spectrum efficiency, and allocates RB resources.

Specifically, after the base station counts the transmission mode and RI supported by the UE within the coverage area, it also includes:

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information at the N-1th moment, and calculates the UE's moving speed, when the UE's moving speed > the fourth preset threshold K4 , the base station switches to TM3, and sends radio resource control RRC information to the UE.

or

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information of the N-1th moment, and calculates the moving speed of the UE. When the moving speed of the UE≤K4, the base station sends an offline The control information DCI is sent to the UE, the base station is handed over to TM4, and sends radio resource control RRC information to the UE.

The embodiment of the present invention provides a method for switching between different transmission modes in the LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, and counts the first total and the second total, where the first A total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second total number accounts for When the proportion of the first total number≤K1, the base station switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs in the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Scenario 2. The embodiment of the present invention provides a method for switching between different transmission modes in an LTE-A system, as shown in FIG. 5 , including:

S1014. The base station acquires the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

S1024. The base station counts the UEs within the coverage area, and obtains the first total number and the second total number; wherein the first total number is the total number of UEs within the coverage area of the base station, and the second total number is the number of ports supported by the base station within the coverage area. 8 total number of UEs.

S1034. Calculate a first ratio of the second total number to the first total number.

S1044. When the first ratio>the first preset threshold K1, the base station switches to the transmission mode TM9, where 0<K1≤1.

It should be noted that not all UEs within the coverage of the base station support TM9, and the number of UEs supporting TM3 mode and UEs supporting TM4 mode is smaller than that of UEs supporting TM9 mode; To determine whether the base station switches to TM9, to ensure the user experience of the UE supporting TM9 mode.

S1054. The base station sends channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage area. After receiving the CSI-RS, each UE performs channel estimation to obtain a channel estimation result. Each UE calculates the channel according to the channel estimation result. Upload RI to the base station.

It should be noted that the communication cell within the coverage of the base station sends a cell reference signal CRS to each UE, and only terminals supporting TM4 can receive the CRS and perform channel estimation based on the CRS.

S1064. The base station counts the third total number of UEs that support TM9 and have an RI greater than 4 within the coverage.

S1074. The base station calculates a second ratio of the third total number to the first total number.

S1084. When the second ratio>the third preset threshold K3, the base station maintains the current TM9.

Specifically, when the second ratio ≤ the third preset threshold K3, the base station switches to TM3 or TM4, where 0≤K3≤1.

S1094. When the absolute value of any communication cell>the second preset threshold K2, the base station maintains the current TM9, where K2>0.

Specifically, when the absolute value of any communication cell ≤ the second preset threshold K2, the base station switches to TM3 or TM4.

S1104. The base station counts the fourth total number of UEs supporting TM3 and TM4 within the coverage.

S1114. The base station counts the fifth total number of UEs supporting TM9 within the coverage.

S1124. The base station calculates a third ratio between the fourth total and the fifth total, and adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio.

Specifically, after adjusting the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio, it also includes:

The base station adjusts the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UEs within the coverage area.

S1134. The base station counts the transmission modes and RI supported by the UE within the coverage;

S1144. When confirming that the UE supports TM9 and RI>5, the base station searches for spectrum efficiency according to the CQI uploaded by the UE, selects a modulation and decoding scheme MCS according to the spectrum efficiency, and allocates RB resources.

Specifically, after the base station counts the transmission mode and RI supported by the UE within the coverage area, it also includes:

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information at the N-1th moment, and calculates the UE's moving speed, when the UE's moving speed > the fourth preset threshold K4 , the base station switches to TM3, and sends radio resource control RRC information to the UE.

or

When it is confirmed that the UE supports TM9 and RI≤5, the base station obtains the location information of the UE at the Nth moment and the location information of the N-1th moment, and calculates the moving speed of the UE. When the moving speed of the UE≤K4, the base station sends an offline The control information DCI is sent to the UE, the base station is handed over to TM4, and sends radio resource control RRC information to the UE.

The embodiment of the present invention provides a method for switching between different transmission modes in the LTE-A system. The base station obtains the transmission mode supported by each UE within the coverage area and the number of supported ports N, and counts the first total and the second total, where the first A total number is the total number of UEs in the coverage of the base station, and the second total number is the total number of UEs with 8 ports supported by the base station in the coverage area; by calculating the ratio of the second total number to the first total number; when the second total number accounts for When the proportion of the first total number≤K1, the base station switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs in the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Embodiment 4. The embodiment of the present invention provides a base station 10, as shown in FIG. 6 , including:

The data unit 1010 is configured to obtain the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

The statistical unit 1020 is configured to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit 1010; wherein the first total number is the UE within the coverage of the base station The second total number is the total number of UEs with 8 ports supported by the base station within the coverage area.

The calculation unit 1030 is configured to calculate a first ratio between the second total number and the first total number according to the first total number and the second total number counted by the statistics unit 1020 .

The judging unit 1040 is configured to judge the magnitude of the first ratio calculated by the computing unit 1030 and the first preset threshold K1, where 0<K1≤1.

The switching unit 1050 is configured to switch to the transmission mode TM9 when the judging unit 1040 determines that the first ratio>K1.

An embodiment of the present invention provides a base station. The data unit obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, and the statistical unit counts the first total and the second total, wherein the first total is the base station's coverage The total number of UEs within the range, the second total number is the total number of UEs with 8 ports supported by the base station within the coverage area; the calculation unit calculates the ratio of the second total number to the first total number; the discrimination unit determines when the second total number accounts for the first total number When the proportion of the total number≤K1, the switching unit switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Embodiment 5. The embodiment of the present invention provides a base station 10, as shown in FIG. 7, the specific implementation manner is as follows:

Scenario 1. The embodiment of the present invention provides a base station 10, as shown in FIG. 7 , including:

The data unit 1010 is configured to obtain the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

The statistical unit 1020 is configured to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit 1010; wherein the first total number is the UE within the coverage of the base station The second total number is the total number of UEs with 8 ports supported by the base station within the coverage area.

The calculation unit 1030 is configured to calculate a first ratio between the second total number and the first total number according to the first total number and the second total number counted by the statistics unit 1020 .

The judging unit 1040 is configured to judge the magnitude of the first ratio calculated by the computing unit 1030 and the first preset threshold K1, where 0<K1≤1.

The switching unit 1050 is further configured to switch to the transmission mode TM3 when the judging unit 1040 determines that the first ratio ≤ K1.

The signal sending unit 1060 is configured to send a cell reference signal CRS to each UE in the communication cell within the coverage.

The information receiving unit 1070 is configured to receive the rank indication RI reported by each UE according to the CRS sent by the signal sending unit 1060 .

The resource allocation unit 1080 is configured to calculate the time-frequency resource RB allocated to each UE according to the RI received by the information receiving unit 1070 .

An embodiment of the present invention provides a base station. The data unit obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, and the statistical unit counts the first total and the second total, wherein the first total is the base station's coverage The total number of UEs within the range, the second total number is the total number of UEs with 8 ports supported by the base station within the coverage area; the calculation unit calculates the ratio of the second total number to the first total number; the discrimination unit determines when the second total number accounts for the first total number When the proportion of the total number≤K1, the switching unit switches to the transmission mode TM3, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Scenario 2. The embodiment of the present invention provides a base station 10, as shown in FIG. 7 , including:

The data unit 1010 is configured to obtain the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

The statistical unit 1020 is configured to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit 1010; wherein the first total number is the UE within the coverage of the base station The second total number is the total number of UEs with 8 ports supported by the base station within the coverage area.

The calculation unit 1030 is configured to calculate a first ratio between the second total number and the first total number according to the first total number and the second total number counted by the statistics unit 1020 .

The judging unit 1040 is configured to judge the magnitude of the first ratio calculated by the computing unit 1030 and the first preset threshold K1, where 0<K1≤1.

The switching unit 1050 is further configured to switch to the transmission mode TM4 when the judging unit 1040 determines that the first ratio≦K1.

The signal sending unit 1060 is configured to send a cell reference signal CRS to each UE in the communication cell within the coverage.

The information receiving unit 1070 is configured to receive the rank indication RI reported by each UE according to the CRS sent by the signal sending unit 1060 .

The resource allocation unit 1080 is configured to calculate the time-frequency resource RB allocated to each UE according to the RI received by the information receiving unit 1070 .

An embodiment of the present invention provides a base station. The data unit obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, and the statistical unit counts the first total and the second total, wherein the first total is the base station's coverage The total number of UEs within the range, the second total number is the total number of UEs with 8 ports supported by the base station within the coverage area; the calculation unit calculates the ratio of the second total number to the first total number; the discrimination unit determines when the second total number accounts for the first total number When the proportion of the total number≤K1, the switching unit switches to the transmission mode TM4, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Embodiment 6. The embodiment of the present invention provides a base station 10, as shown in FIG. 8, the specific implementation manner is as follows:

Scenario 1. An embodiment of the present invention provides a base station 10, as shown in FIG. 8 , including:

The data unit 1010 is configured to obtain the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

The statistical unit 1020 is configured to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit 1010; wherein the first total number is the UE within the coverage of the base station The second total number is the total number of UEs with 8 ports supported by the base station within the coverage area.

The calculation unit 1030 is configured to calculate a first ratio between the second total number and the first total number according to the first total number and the second total number counted by the statistics unit 1020 .

The judging unit 1040 is configured to judge the magnitude of the first ratio calculated by the computing unit 1030 and the first preset threshold K1, where 0<K1≤1.

The switching unit 1050 is configured to switch to the transmission mode TM9 when the judging unit 1040 determines that the first ratio>K1.

A signal sending unit 1060, configured to send channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage;

The signal receiving unit 1070 is configured to receive the throughput reported by each UE according to the CSI-RS sent by the signal sending unit 1060;

The data unit 1020 is further configured to acquire the throughput of each UE received by the signal receiving unit 1070;

The statistical unit 1020 is further configured to, according to the throughput of each UE obtained by the data unit 1010, count the first total throughput of the UE in each communication cell within the coverage before the switching unit 1050 switches to TM9;

The statistical unit 1020 is further configured to count the second total throughput of the UE in each communication cell within the coverage after the switching unit 1050 switches to TM9 according to the throughput of each UE obtained by the data unit 1010;

The calculation unit 1030 is further configured to calculate and calculate the absolute value of the difference between the first total throughput and the second total throughput according to the first total throughput and the second total throughput calculated by the statistical unit 1020;

The judging unit 1040 is also used to judge the magnitude of the absolute value calculated by the computing unit 1030 and the second preset threshold, where K2>0;

The switching unit 1050 is further configured to keep the current TM9 when the judging unit 1040 determines that the absolute value>the second preset threshold K2.

Specifically, the switching unit 1050 is further configured to switch the switching unit 1050 to TM3 or TM4 when the judging unit 1040 determines that the absolute value ≤ the second preset threshold K2.

The statistics unit 1020 is further configured to count the fourth total number of UEs supporting TM3 and TM4 within the coverage according to the transmission mode supported by each UE within the coverage acquired by the data unit 1010;

The statistical unit 1020 is further configured to count the fifth total number of UEs supporting TM9 within the coverage according to the transmission mode supported by each UE within the coverage acquired by the data unit 1010;

The calculation unit 1030 is further configured to calculate a third ratio between the fourth total number and the fifth total number according to the fourth total number and the fifth total number counted by the statistical unit 1020;

The resource allocation unit 1080 is configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio calculated by the calculation unit 1030 .

Specifically, the resource allocation unit 1080 is further configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UE within the coverage area to adjust the RB resources allocated to TM3 and TM4 and RB resources allocated to TM9.

The statistical unit 1020 is also used to count the transmission mode and RI supported by the UE within the coverage;

The judging unit 1040 is further configured to judge whether the UE supports TM9 and whether the RI is greater than 5 according to the transmission mode and RI supported by the UE within the coverage area counted by the statistical unit 1020;

The control unit 1110 is configured to determine by the judging unit 1040 that the UE supports TM9 and RI>5, the control unit 1110 searches for the spectral efficiency according to the CQI uploaded by the UE, and selects the modulation and decoding mode MCS according to the spectral efficiency;

The resource allocation unit 1080 is further configured to allocate RB resources according to the MCS selected by the control unit 1110 .

Specifically, the base station further includes a map unit 1090, configured to provide location information of the UE at the Nth moment, where N≥1 and N is an integer;

The map unit 1090 is also used to provide the location information of the UE at the Nth moment and the location information of the N-1th moment when the judging unit 1040 determines that the UE supports TM9 and RI≤5;

The calculation unit 1030 is further configured to calculate the moving speed of the UE according to the location information of the UE at the Nth moment and the location information at the N-1th moment provided by the map unit 1090;

The judging unit 1040 is further configured to judge the moving speed of the UE calculated by the computing unit 1030 and the magnitude of the fourth preset threshold K4, where K4>0;

The switching unit 1050 is further configured to switch to TM3 when the judging unit 1040 determines that the moving speed of the UE is > K4;

The signal sending unit 1060 is also used to send the radio resource control RRC information to the UE when the switching unit 1050 switches to TM3;

The signal receiving unit 1070 is further configured to receive the RI uploaded by the UE.

or

The switching unit 1050 is further configured to switch the switching unit 1040 to TM4 when the judging unit 1040 determines that the moving speed of the UE is ≤ K4;

The signal sending unit 1060 is also used to send the radio resource control RRC information to the UE when the switching unit 1050 switches to TM4;

The signal receiving unit 1070 is further configured to receive the RI uploaded by the UE.

An embodiment of the present invention provides a base station. The data unit obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, and the statistical unit counts the first total and the second total, wherein the first total is the base station's coverage The total number of UEs within the range, the second total number is the total number of UEs with 8 ports supported by the base station within the coverage area; the calculation unit calculates the ratio of the second total number to the first total number; the discrimination unit determines when the second total number accounts for the first total number When the proportion of the total number≤K1, the switching unit switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

Scenario 2. The embodiment of the present invention provides a base station 10, as shown in FIG. 8 , including:

The data unit 1010 is configured to obtain the transmission mode supported by each UE within the coverage area and the number of supported ports N, where N∈{2,4,8}.

The statistical unit 1020 is configured to count the first total number and the second total number according to the transmission mode supported by each UE within the coverage and the number of supported ports N obtained by the data unit 1010; wherein the first total number is the UE within the coverage of the base station The second total number is the total number of UEs with 8 ports supported by the base station within the coverage area.

The calculation unit 1030 is configured to calculate a first ratio between the second total number and the first total number according to the first total number and the second total number counted by the statistics unit 1020 .

The judging unit 1040 is configured to judge the magnitude of the first ratio calculated by the computing unit 1030 and the first preset threshold K1, where 0<K1≤1.

The switching unit 1050 is configured to switch to the transmission mode TM9 when the judging unit 1040 determines that the first ratio>K1.

A signal sending unit 1060, configured to send channel state information measurement pilot CSI-RS to each UE in the communication cell within the coverage;

The signal receiving unit 1070 is configured to receive the RI reported by each UE according to the CSI-RS sent by the signal sending unit 1060;

The data unit 1010 is further configured to obtain the RI uploaded by each UE received by the signal receiving unit 1070;

The statistics unit 1020 is further configured to count the third total number of UEs that support TM9 and whose RI is greater than 4 according to the RI uploaded by each UE acquired by the data unit 1010 and the transmission mode supported by each UE;

The calculation unit 1030 is further configured to calculate the second ratio of the third total to the first total according to the third total counted by the statistical unit 1020;

The judging unit 1040 is also used to judge the magnitude of the second ratio calculated by the computing unit 1030 and the third preset threshold K3, where 0≤K3≤1;

The switching unit 1050 is further configured to keep the current TM9 in the switching unit 1050 when the judging unit 1040 determines that the second ratio is > K3.

Specifically, the switching unit 1050 is further configured to switch the switching unit 1050 to TM3 or TM4 when the judging unit 1040 determines that the second ratio ≤ K3.

The statistics unit 1020 is further configured to count the fourth total number of UEs supporting TM3 and TM4 within the coverage according to the transmission mode supported by each UE within the coverage acquired by the data unit 1010;

The statistical unit 1020 is further configured to count the fifth total number of UEs supporting TM9 within the coverage according to the transmission mode supported by each UE within the coverage acquired by the data unit 1010;

The calculation unit 1030 is further configured to calculate a third ratio between the fourth total number and the fifth total number according to the fourth total number and the fifth total number counted by the statistical unit 1020;

The resource allocation unit 1080 is configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the third ratio calculated by the calculation unit 1030 .

Specifically, the resource allocation unit 1080 is further configured to adjust the RB resources allocated to TM3 and TM4 and the RB resources allocated to TM9 according to the RI uploaded by the UE within the coverage area to adjust the RB resources allocated to TM3 and TM4 and RB resources allocated to TM9.

The statistical unit 1020 is also used to count the transmission mode and RI supported by the UE within the coverage;

The judging unit 1040 is further configured to judge whether the UE supports TM9 and whether the RI is greater than 5 according to the transmission mode and RI supported by the UE within the coverage area counted by the statistical unit 1020;

The control unit 1110 is configured to determine by the judging unit 1040 that the UE supports TM9 and RI>5, the control unit 1110 searches for the spectral efficiency according to the CQI uploaded by the UE, and selects the modulation and decoding mode MCS according to the spectral efficiency;

The resource allocation unit 1080 is further configured to allocate RB resources according to the MCS selected by the control unit 1110 .

Specifically, the base station further includes a map unit, configured to provide location information of the UE at the Nth moment, where N≥1 and N is an integer;

The map unit 1090 is also used to provide the location information of the UE at the Nth moment and the location information of the N-1th moment when the judging unit 1040 determines that the UE supports TM9 and RI≤5;

The calculation unit 1030 is further configured to calculate the moving speed of the UE according to the location information of the UE at the Nth moment and the location information at the N-1th moment provided by the map unit 1090;

The judging unit 1040 is further configured to judge the moving speed of the UE calculated by the computing unit 1030 and the magnitude of the fourth preset threshold K4, where K4>0;

The switching unit 1050 is further configured to switch to TM3 when the judging unit 1040 determines that the moving speed of the UE is > K4;

The signal sending unit 1060 is also used to send the radio resource control RRC information to the UE when the switching unit 1050 switches to TM3;

The signal receiving unit 1070 is further configured to receive the RI uploaded by the UE.

or

The switching unit 1050 is further configured to switch the switching unit 1050 to TM4 when the judging unit 1040 determines that the moving speed of the UE is ≤ K4;

The signal sending unit 1060 is also used to send the radio resource control RRC information to the UE when the switching unit 1050 switches to TM4;

The signal receiving unit 1070 is further configured to receive the RI uploaded by the UE.

An embodiment of the present invention provides a base station. The data unit obtains the transmission mode supported by each UE in the coverage area and the number of supported ports N, and the statistical unit counts the first total and the second total, wherein the first total is the base station's coverage The total number of UEs within the range, the second total number is the total number of UEs with 8 ports supported by the base station within the coverage area; the calculation unit calculates the ratio of the second total number to the first total number; the discrimination unit determines when the second total number accounts for the first total number When the proportion of the total number≤K1, the switching unit switches to the transmission mode TM9, where 0<K1≤1; thus the base station can enable different transmission modes according to the proportion of the transmission mode supported by the UE in the total number of UEs within the coverage area , so as to solve the problem that in the prior art, when the LTE-A system uses TM9 to run, the UE using TM3 or TM4 in the LTE-A system cannot obtain RB resource gain; or when the LTE-A system uses TM3 or TM4 to run, the LTE-A system The UE using TM9 cannot obtain RB resource gain.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (20)

1. in a kind of lte-a system different transmission mode changing method, it is characterised in that include：

Base station obtains the port number N, wherein N ∈ { 2,4,8 } of the transmission mode that in coverage, each UE is supported and support；

UE of the base station statistics in the coverage, obtains the first sum and the second sum；Wherein first sum is base The sum of the UE in the coverage is stood in, second sum is the port number that supports in the coverage in base station Sum for 8 UE；And calculate the first ratio of second sum and first sum；

When the first ratio first predetermined threshold value K1 of ＞, base station switches to transmission mode TM9, wherein 0 ＜ K1≤1.

2. in lte-a system according to claim 1 different transmission mode changing method, it is characterised in that the side Method also includes：

When the first ratio≤the first predetermined threshold value K1, base station switches to TM3 or TM4.

3. in lte-a system according to claim 2 different transmission mode changing method, it is characterised in that

After the base station switches to TM3, also include：

Communication cell of the base station in the coverage sends cell reference signals CRS, each UE described to each UE and receives Channel estimation is carried out to after the CRS, and obtain channel estimation results；

Each UE described reports order instruction RI to the base station according to the channel estimation results, and the base station is counted according to the RI The running time-frequency resource RB of each UE described in point counting dispensing.

4. in lte-a system according to claim 2 different transmission mode changing method, it is characterised in that

After the base station switches to TM4, also include：

Communication cell of the base station in the coverage sends cell reference signals CRS, each UE described to each UE and receives Channel estimation is carried out to after the CRS, and obtain channel estimation results；

Each UE described reports order instruction RI to the base station according to the channel estimation results, and the base station is counted according to the RI The RB of point counting each UE of dispensing.

5. in lte-a system according to claim 1 different transmission mode changing method, it is characterised in that the base After station switches to TM9, also include：

Communication cell of the base station in the coverage sends channel condition information to each UE and measures pilot tone CSI-RS, described Each UE carries out channel estimation after receiving the CSI-RS, and obtains channel estimation results；

Each UE described is according to the channel estimation results to the base station upload throughput；

Base station obtains the first total throughout for switching to UE in each communication cell of the front base station of TM9 in the coverage；

Base station obtains the second total throughout for switching to UE in each communication cell of base station in the coverage after TM9；

Base station calculates the absolute value of first total throughout and the difference of second total throughout；

When second predetermined threshold value K2 of absolute value ＞ that there is arbitrary communication cell, the base station keeps current TM9；

When absolute value≤the second predetermined threshold value K2 that there is arbitrary communication cell, the base station switches to TM3 or TM4, Wherein K2 ＞ 0.

6. in lte-a system according to claim 1 different transmission mode changing method, it is characterised in that the base After station switches to TM9, also include：

Communication cell of the base station in the coverage sends channel condition information to each UE and measures pilot tone CSI-RS, described Each UE carries out channel estimation after receiving the CSI-RS, obtains channel estimation results, and each UE described is according to the channel Estimated result uploads RI to the base station；

Base station statistics supports TM9 and threeth sum of the RI more than 4 UE in the coverage；

Base station calculates the second ratio of the 3rd sum and first sum；

When the second ratio three predetermined threshold value K3 of ＞, base station keeps current TM9；

When the second ratio≤three predetermined threshold value K3, base station switches to TM3 or TM4, wherein 0≤K3≤1.

7. in the lte-a system according to claim 5 or 6 different transmission mode changing method, it is characterised in that described Method also includes：

Base station statistics is supported TM3 in the coverage and supports the 4th sum of the UE of TM4；

Base station statistics supports the 5th sum of the UE of TM9 in the coverage；

Base station calculates the 3rd ratio of the 4th sum and the 5th sum, and is distributed to according to the 3rd ratio adjustment The RB resource of TM3 and TM4 and distribute to the RB resource of TM9.

8. in lte-a system according to claim 7 different transmission mode changing method, it is characterised in that described The RB resource for distributing to TM3 and TM4 and the RB resource for distributing to TM9 are adjusted according to the 3rd ratio after, also include：

The RI that base station is uploaded according to the UE in the coverage is adjusting the RB resource for distributing to TM3 and TM4 and distribute to The RB resource of TM9.

9. in lte-a system according to claim 8 different transmission mode changing method, it is characterised in that the side Method also includes：

Transmission mode and RI that UE of the base station statistics in the coverage is supported；

When confirming that UE supports TM9 and RI ＞ 5, spectrum efficiency is searched according to the CQI that the UE is uploaded in the base station, according to institute State spectrum efficiency and decode-regulating mode MCS is selected, and distribute RB resource.

10. in lte-a system according to claim 9 different transmission mode changing method, it is characterised in that the base Statistics stand after the transmission mode that the UE in the coverage is supported and RI, also includes：

When confirming that UE supports TM9 and RI≤5, base station obtains the positional information of the UE n-hour and the position in N-1 moment Confidence ceases, and calculates the translational speed of the UE, and when four predetermined threshold value K4 of translational speed ＞ of the UE, base station switches to TM3, and radio resource control RRC information is sent to the UE；

Or

When confirming that UE supports TM9 and RI≤5, base station obtains the positional information of UE n-hour and the position in N-1 moment letter Breath, and the translational speed of the UE is calculated, as the translational speed≤K4 of the UE, base station sends offline control information DCI extremely UE, base station switches to TM4, and sends radio resource control RRC information to the UE.

A kind of 11. base stations, including：

Data cell, for obtaining the port number N, wherein N ∈ of the transmission mode of each UE support and support in coverage {2,4,8}；

Statistic unit, for obtained according to the data cell transmission mode that each UE in the coverage supports with And total and the second sum of port number N statistics first that supports；Wherein first sum is for base station in the coverage UE sum, second sum is the sum of the UE that the port number that supports in the coverage in base station is 8；

Computing unit, for first sum that counts according to the statistic unit and the described second sum, calculates described the First ratio of two sums and first sum；

Judgement unit, for judging first ratio of computing unit calculating and the size of the first predetermined threshold value K1, its In 0 ＜ K1≤1；

Switch unit, when judging K1 described in the first ratio ＞ for the judgement unit, the switch unit switches to biography Defeated pattern TM9.

12. base stations according to claim 11, it is characterised in that the switch unit, are additionally operable to the judgement unit and sentence During the fixed first ratio≤K1, the switch unit switches to transmission mode TM3 or TM4.

13. base stations according to claim 12, it is characterised in that after the switch unit switches to TM3, the base station is also Including：

Signal transmitting unit, enters for sending cell reference signals CRS to each UE of the communication cell in the coverage Row channel estimation；

Information receiving unit, for receiving the order instruction that the CRS that each UE described sends is reported according to the signal transmitting unit RI；

Resource allocation unit, the RI for being received according to described information receiving unit calculates the time-frequency money for distributing to each UE Source RB.

14. base stations according to claim 12, it is characterised in that after the switch unit switches to TM4, the base station is also Including：

Signal transmitting unit, enters for sending cell reference signals CRS to each UE of the communication cell in the coverage Row channel estimation；

Information receiving unit, for receiving the order instruction that the CRS that each UE described sends is reported according to the signal transmitting unit RI；

Resource allocation unit, the RI for being received according to described information receiving unit calculates the time-frequency money for distributing to each UE Source RB.

15. base stations according to claim 11, it is characterised in that

After the switch unit switches to TM9, the base station also includes：

Signal transmitting unit, leads for sending channel condition information measurement to each UE of the communication cell in the coverage Frequency CSI-RS carries out channel estimation；

Signal receiving unit, for handling up of receiving that the CSI-RS that each UE described is sent according to the signal transmitting unit reports Amount；

The data cell, is additionally operable to obtain the handling capacity of each UE of signal receiving unit reception；

The statistic unit, is additionally operable to the handling capacity of each UE according to the data cell is obtained, and counts the switching Unit switches to first total throughout of UE in each communication cell in the coverage before TM9；

The statistic unit, is additionally operable to the handling capacity of each UE according to the data cell is obtained, and counts the switching Unit switches to second total throughout of UE in each communication cell in the coverage after TM9；

The computing unit, is additionally operable to always be handled up according to first total throughout and described second of statistic unit statistics Amount, calculates the absolute value of first total throughout and the difference of second total throughout；

The judgement unit, is additionally operable to judge the absolute value of computing unit calculating and the size of the second predetermined threshold value, Wherein K2 ＞ 0；

The switch unit, when being additionally operable to judgement unit judgement second predetermined threshold value K2 of absolute value ＞, the switching Unit keeps current TM9；

The switch unit, when being additionally operable to judgement unit judgement absolute value≤the second predetermined threshold value K2, the switching Unit switches to TM3 or TM4.

16. base stations according to claim 11, it is characterised in that after the switch unit switches to TM9, the base station is also Including：

Signal transmitting unit, leads for sending channel condition information measurement to each UE of the communication cell in the coverage Frequency CSI-RS carries out channel estimation；

Signal receiving unit, for receiving the RI that the CSI-RS that each UE described sends is reported according to the signal transmitting unit；

The data cell, is additionally operable to obtain the RI that each UE described of signal receiving unit reception is uploaded；

The statistic unit, be additionally operable to RI that each UE according to the data cell is obtained uploads and described in each UE The transmission mode of support, statistics supports TM9 and threeth sum of the RI more than 4 UE；

The computing unit, be additionally operable to according to the statistic unit statistics the described 3rd sum, calculate described 3rd sum with Second ratio of first sum；

The judgement unit, is additionally operable to judge that second ratio that the computing unit is calculated is big with the 3rd predetermined threshold value K3 Little, wherein 0≤K3≤1；

The switch unit, when being additionally operable to judgement unit judgement the second ratio ＞ K3, the switch unit keeps working as Front TM9；

The switch unit, when being additionally operable to judgement unit judgement the second ratio≤K3, the switch unit is switched to TM3 or TM4.

17. base stations according to claim 15 or 16, it is characterised in that the statistic unit, are additionally operable to according to the number Count according to the transmission mode that each UE is supported in the coverage that unit is obtained support in the coverage TM3 and Support the 4th sum of the UE of TM4；

The statistic unit, is additionally operable to the transmission that each UE is supported in the coverage for obtaining according to the data cell Mode statistical supports the 5th sum of the UE of TM9 in the coverage；

The computing unit, the described 4th total and described 5th sum being additionally operable to according to statistic unit statistics, calculate 3rd ratio of the 4th sum and the 5th sum；

The base station also includes：

Resource allocation unit, for the 3rd ratio for being calculated according to the computing unit, TM3 and TM4's are distributed in adjustment RB resource and the RB resource for distributing to TM9.

18. base stations according to claim 17, it is characterised in that the resource allocation unit, are additionally operable to adjustment and distribute to The RB resource of TM3 and TM4 and after distributing to the RB resource of TM9, the RI for being uploaded according to the UE in the coverage is adjusting The RB resource for distributing to TM3 and TM4 and the RB resource for distributing to TM9.

19. base stations according to claim 18, it is characterised in that the statistic unit, are additionally operable to statistics in the covering In the range of UE support transmission mode and RI；

The judgement unit, is additionally operable to the transmission mould that supports according to the UE in the coverage of statistic unit statistics Formula and RI, judge that the UE supports TM9 and whether RI is more than 5；

The base station also includes：

Control unit, when judging that the UE supports TM9 and RI ＞ 5 for the judgement unit, described control unit is according to institute The CQI for stating UE upload searches spectrum efficiency, selects decode-regulating mode MCS according to the spectrum efficiency；

The resource allocation unit, is additionally operable to the MCS for selecting according to described control unit, distributes RB resource.

20. base stations according to claim 19, it is characterised in that the base station also includes map unit, for providing UE In the positional information of n-hour, wherein N >=1 and N be；

The map unit, also provides for the judgement unit and judges that the UE supports the UE of TM9 and RI≤5 the The positional information of n-hour and the positional information in N-1 moment；

The computing unit, be additionally operable to according to the map unit provide the UE n-hour positional information and N-1 The positional information in moment, calculates the translational speed of the UE；

The judgement unit, is additionally operable to judge translational speed and the 4th predetermined threshold value K4 of the UE of computing unit calculating Size, wherein K4 ＞ 0；

The switch unit, when being additionally operable to the translational speed ＞ K4 that the judgement unit judges the UE, the switch unit is cut Shift to TM3；

The signal transmitting unit, when being additionally operable to the switch unit and switching to TM3, the signal transmitting unit sends wireless money Source controls rrc message to the UE；

The signal receiving unit, is additionally operable to receive the RI of UE upload；

Or

The switch unit, when being additionally operable to translational speed≤K4 that the judgement unit judges the UE, the switch unit is cut Shift to TM4；

The signal transmitting unit, when being additionally operable to the switch unit and switching to TM4, the signal transmitting unit sends wireless money Source controls rrc message to the UE；

The signal receiving unit, is additionally operable to receive the RI of UE upload.