CN106452683A

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

Info

Publication number: CN106452683A
Application number: CN201611117074.9A
Authority: CN
Inventors: 张香云; 李轶群; 韩玉楠
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2016-12-07
Filing date: 2016-12-07
Publication date: 2017-02-22
Anticipated expiration: 2036-12-07
Also published as: CN106452683B

Abstract

The invention provides a method for switching different transmission modes in a LTE-A (Long Term Evolution-Advanced) system and a base station, relates to the technical field of communications, and solves the problem that in the prior art, a LTE-A system cannot configure different transmission modes according to performance of UE (User Equipment), so that user experience is reduced. The switching method comprises the steps that: the base station acquires a transmission mode supported by each UE and a number N of ports supported by each UE in a coverage range, wherein N is an element of a set {2, 4, 8}; the base station counts a first UE total number and a second UE total number in the coverage range, wherein the first UE total number is a total number of the UE of the base station in the coverage range, and the second UE total number is a total number of the UE of the base station, which supports 8 ports, in the coverage range; a ratio of the second UE total number to the first UE total number is calculated; and when the ratio of the second UE total number to the first UE total number is greater than a first preset threshold K1, the base station switches to a transmission mode TM9, wherein K1 is greater than 0 and smaller than or equal to 1. The method and the base station which are provided by the embodiment of the invention are used for switching different transmission modes in the LTE-A system.

Description

The changing method of different transmission mode and base station in a kind of lte-a system

Technical field

The present invention relates in communication technical field, more particularly to a kind of lte-a system different transmission mode changing method And base station.

Background technology

With the progress of science and technology, Long Term Evolution upgrade version (English full name：Long Term Evolution, referred to as： LTE-A) life of people has gradually been come into；In actual deployment, lte-a system needs compatible transmission pattern (English full name： Transmission Mode, abbreviation TM) for TM9 user equipment (English full name：User Equipment, referred to as：UE), because This lte-a system needs to introduce channel condition information measurement pilot tone (English full name：Channel-State Information- Reference Symbol, referred to as：CSI-RS)；And in order to compatible transmission pattern is the UE of TM3 or TM4, lte-a system needs Retain the CRS structure for supporting TM3 and TM4；Wherein, support that the UE of TM3 uses third generation partner program (English complete Claim：3rd Generation Partnership Project, referred to as：8 (English full name Release of protocol version 3GPP) 8, referred to as：R8), support that the UE of TM4 uses R9, support that the UE of TM9 uses R10.

When existing lte-a system is run using TM9, do not identified using the UE of TM3 or TM4 in lte-a system Lte-a system is sent to the information of UE by CSI-RS, so the mapping mode of corresponding CSI-RS can not be by TM3 or TM4 UE recognized, when UE using TM3 or TM4 when, carrying out Physical Downlink Shared Channel (English full name：Physical Downlink Shared Channel, referred to as：PDSCH) when transfer rate is mated, also according to the side that introduces in R8 or R9 Formula is carried out, i.e., PDSCH transmission does not avoid those running time-frequency resource (English full name shared by CSI-RS in mapping： Resource Block, referred to as：RB), so as to cause when lte-a system is run using TM9, in lte-a system using TM3 or The UE of person TM4 can not obtain RB resource gain；And CRS structure pair is adopted when lte-a system is using TM3 or TM4 operation UE carries out data exchange, and adopts the UE of TM9 recognize the mapping mode of CRS, therefore in lte-a system using TM9 UE RB resource gain can not be obtained, so as to reduce the experience of user.

From the foregoing, when in prior art, lte-a system is run using TM9, using TM3's or TM4 in lte-a system UE can not obtain RB resource gain；Or lte-a system adopts the UE of TM9 not using during TM3 or TM4 operation in lte-a system RB resource gain can be obtained.

Content of the invention

Embodiments of the invention provide the changing method of different transmission mode and base station in a kind of lte-a system, solve When lte-a system is run using TM9 in prior art, in lte-a system, the increasing of RB resource can not be obtained using the UE of TM3 or TM4 Benefit；Or lte-a system can not obtain RB resource gain using the UE of TM9 using during TM3 or TM4 operation in lte-a system Problem.

For reaching above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：

First aspect, the embodiment of the present invention provide a kind of changing method of different transmission mode in lte-a system, including：

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

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

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

Specifically, method also includes：

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

Specifically,

After base station switches to TM3, also include：

Communication cell of the base station in coverage sends cell reference signals CRS, each UE to each UE and receives CRS After carry out channel estimation, and obtain channel estimation results；

Each UE reports order instruction RI to base station according to channel estimation results, and base station calculates according to RI and distributes to each UE's Running time-frequency resource RB.

Specifically,

After base station switches to TM4, also include：

Each UE reports order instruction RI to base station according to channel estimation results, and base station calculates according to RI and distributes to each UE's RB.

Specifically, after base station switches to TM9, also include：

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

Each UE is according to channel estimation results to 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 coverage；

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

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

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

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

Specifically, after base station switches to TM9, also include：

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

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

Base station calculates the second ratio of the 3rd sum and the 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.

Specifically, method also includes：

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

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

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

Specifically, adjust the RB resource for distributing to TM3 and TM4 and the RB resource for distributing to TM9 according to the 3rd ratio after, also Including：

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

Specifically, method also includes：

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

When confirming that UE supports TM9 and RI ＞ 5, spectrum efficiency is searched according to the CQI that UE is uploaded in base station, is imitated according to frequency spectrum Rate selects decode-regulating mode MCS, and distributes RB resource.

Specifically, base station statistics also includes after the transmission mode that the UE in coverage is supported and RI：

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 Confidence ceases, and calculates the translational speed of UE, and when four predetermined threshold value K4 of translational speed ＞ of UE, base station switches to TM3, concurrently Radio resource control RRC information is sent to 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 Confidence ceases, and calculates the translational speed of UE, and as the translational speed≤K4 of UE, base station sends offline control information DCI to UE, base Station switches to TM4, and sends radio resource control RRC information to UE.

Second aspect, the embodiment of the present invention provide a kind of base station, including：

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

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

Computing unit, for the first sum and the second sum that count according to statistic unit, calculates the second sum and first First ratio of sum；

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

Switch unit, when judging the first ratio ＞ K1 for judgement unit, switch unit switches to transmission mode TM9.

Specifically, switch unit, when being additionally operable to judgement unit judgement the first ratio≤K1, switch unit switches to transmission mould Formula TM3 or TM4.

Specifically, after switch unit switches to TM3, base station also includes：

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

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

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

Specifically, after switch unit switches to TM4, base station also includes：

Specifically,

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

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

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

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

Statistic unit, the handling capacity of each UE being additionally operable to according to data cell acquisition, statistics switch unit switches to TM9 First total throughout of UE in front each communication cell in coverage；

Statistic unit, the handling capacity of each UE being additionally operable to according to data cell acquisition, statistics switch unit switches to TM9 Afterwards in each communication cell in coverage UE the second total throughout；

Computing unit, the first total throughout and the second total throughout being additionally operable to according to statistic unit statistics, calculate The absolute value of the difference of the first total throughout and the second total throughout；

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；

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

Switch unit, when being additionally operable to judgement unit judgement absolute value≤the second predetermined threshold value K2, switch unit switches to TM3 Or TM4.

Specifically, after switch unit switches to TM9, base station also includes：

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

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

Statistic unit, is additionally operable to the transmission mould of RI and each UE support for uploading according to each UE that data cell is obtained Formula, statistics supports TM9 and threeth sum of the RI more than 4 UE；

Computing unit, the 3rd sum being additionally operable to according to statistic unit statistics, calculate the 3rd sum and the of the first sum Two ratios；

Judgement unit, be additionally operable to judge computing unit calculating the second ratio and the 3rd predetermined threshold value K3 size, wherein 0 ≤K3≤1；

Switch unit, when being additionally operable to judgement unit the second ratio ＞ K3 of judgement, switch unit keeps current TM9；

Switch unit, when being additionally operable to judgement unit judgement the second ratio≤K3, switch unit switches to TM3 or TM4.

Specifically, statistic unit, is additionally operable to the transmission that each UE is supported in the coverage for obtaining according to data cell Mode statistical is supported TM3 in coverage and supports the 4th sum of the UE of TM4；

Statistic unit, is additionally operable to the transmission mode that each UE is supported in the coverage statistics for obtaining according to data cell The 5th sum of the UE of TM9 is supported in coverage；

Computing unit, the 4th sum and the 5th sum being additionally operable to according to statistic unit statistics, calculate the 4th sum and the 3rd ratio of five sums；

Base station also includes：

Resource allocation unit, for the 3rd ratio for being calculated according to computing unit, the RB money of TM3 and TM4 is distributed in adjustment Source and the RB resource for distributing to TM9.

Specifically, resource allocation unit, is additionally operable to adjust the RB resource for distributing to TM3 and TM4 and distributes to the RB money of TM9 Behind source, the RB resource for distributing to TM3 and TM4 and the RB for distributing to TM9 are adjusted according to the RI of the UE upload in coverage Resource.

Specifically, statistic unit, is additionally operable to transmission mode and RI that UE of the statistics in coverage is supported；

Judgement unit, be additionally operable to the transmission mode supported according to the UE in the coverage of statistic unit statistics and RI, judges that UE supports TM9 and whether RI is more than 5；

Base station also includes：

Control unit, when judging that UE supports TM9 and RI ＞ 5 for judgement unit, the CQI that control unit is uploaded according to UE Spectrum efficiency is searched, decode-regulating mode MCS is selected according to spectrum efficiency；

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

Specifically, base station also includes map unit, for providing positional information of the UE in n-hour, wherein N >=1 and N is Integer；

Map unit, also provides for the UE of judgement unit judgement UE support TM9 and RI≤5 in the position of n-hour Information and the positional information in N-1 moment；

Computing unit, is additionally operable to the UE of unit offer according to the map in positional information and the position in N-1 moment of n-hour Confidence ceases, and calculates the translational speed of UE；

Judgement unit, is additionally operable to judge the size of the translational speed with the 4th predetermined threshold value K4 of the UE of computing unit calculating, Wherein K4 ＞ 0；

Switch unit, when being additionally operable to the translational speed ＞ K4 that judgement unit judges UE, switch unit switches to TM3；

Signal transmitting unit, when being additionally operable to switch unit and switching to TM3, signal transmitting unit sends wireless heterogeneous networks Rrc message is to UE；

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

Or

Switch unit, when being additionally operable to translational speed≤K4 that judgement unit judges UE, switch unit switches to TM4；

Signal transmitting unit, when being additionally operable to switch unit and switching to TM4, signal transmitting unit sends wireless heterogeneous networks Rrc message is to UE；

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

The changing method of different transmission mode and base station in lte-a system is embodiments provided, base station is by obtaining The port number N of the transmission mode of each UE support and support in coverage is taken, and the first sum and the second sum is counted, its In the first sum for UE of the base station in coverage sum, the port number that the second sum is supported in the coverage for base station Sum for 8 UE；By calculating the ratio of the second sum and the first sum；When the second sum accounts for the ratio ＞ K1 of the first sum When, base station switches to transmission mode TM9, wherein 0 ＜ K1≤1；So as to the biography that base station can be supported according to UE in coverage Defeated pattern accounts for the ratio of the quantity of total UE to open different transmission modes, so as to solve lte-a system in prior art When running using TM9, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system is adopted During TM3 or TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

Description of the drawings

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the flow chart of the changing method of different transmission mode in a kind of lte-a system provided in an embodiment of the present invention；

Fig. 2 is the another kind of the changing method of different transmission mode in a kind of lte-a system provided in an embodiment of the present invention Flow chart；

Fig. 3 be in a kind of lte-a system provided in an embodiment of the present invention the changing method of different transmission mode another Flow chart；

Fig. 4 be in a kind of lte-a system provided in an embodiment of the present invention the changing method of different transmission mode another Flow chart；

Fig. 5 be in a kind of lte-a system provided in an embodiment of the present invention the changing method of different transmission mode another Flow chart；

Fig. 6 is a kind of structural representation of base station provided in an embodiment of the present invention；

Fig. 7 is a kind of another kind of structural representation of base station provided in an embodiment of the present invention；

Fig. 8 is a kind of another structural representation of base station provided in an embodiment of the present invention.

Reference：

Base station -10；

Data cell -1010；

Statistic unit -1020；

Computing unit -1030；

Judgement unit -1040；

Switch unit -1050；

Signal transmitting unit -1060；

Information receiving unit -1070；

Resource allocation unit -1080；

Map unit -1090；

Control unit -1110.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

The embodiment one, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, such as Fig. 1 Shown including：

S101, base station obtain the port number N, wherein N ∈ of the transmission mode that in coverage, each UE is supported and support {2,4,8}.

The UE of S102, base station statistics in coverage, obtains the first sum and the second sum；Wherein first sum is base The sum of the UE in coverage is stood in, the second sum is the total of the UE that the port number that supports in coverage in base station is 8 Number.

First ratio of S103, the second sum of calculating and the first sum.

S104, when first ratio the first predetermined threshold value K1 of ＞, base station switches to transmission mode TM9, wherein 0 ＜ K1≤1.

It should be noted that the UE due to base station in coverage is not all support TM9, and support TM3 pattern The quantity of the UE of UE and support TM4 pattern is less than the UE for supporting TM9 pattern；Accordingly, it would be desirable to according to support TM9 pattern UE number come Determine whether base station switches to TM9, it is ensured that support the Consumer's Experience of the UE of TM9 pattern.

The changing method of different transmission mode in lte-a system is embodiments provided, base station is covered by obtaining In the range of the transmission mode supported of each UE and support port number N, and count the first sum and the second sum, wherein first Sum is the sum of UE of the base station in coverage, and the port number that the second sum is supported in coverage for base station is 8 The sum of UE；By calculating the ratio of the second sum and the first sum；When the second sum accounts for the ratio ＞ K1 of the first sum, base Station switches to transmission mode TM9, wherein 0 ＜ K1≤1；So as to the transmission mode that base station can be supported according to UE in coverage The ratio of quantity of total UE being accounted for different transmission modes are opened, TM9 is adopted so as to solve lte-a system in prior art During operation, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system using TM3 or During TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The embodiment two, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, such as Fig. 2 As follows with concrete implementation mode shown in Fig. 3：

The scene one, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, as Fig. 2 institute Show including：

S1011, base station obtain the port number N, wherein N ∈ of the transmission mode that in coverage, each UE is supported and support {2,4,8}.

The UE of S1021, base station statistics in coverage, obtains the first sum and the second sum；Wherein the first sum is The sum of UE of the base station in coverage, the second sum is the UE that the port number that supports in coverage in base station is 8 Sum.

First ratio of S1031, the second sum of calculating and the first sum.

S1041, when the first ratio≤the first predetermined threshold value K1, base station switches to TM3, wherein 0 ＜ K1≤1.

It should be noted that the UE due to base station in coverage is not all support TM3, and support TM4 pattern The quantity of the UE of UE and support TM9 pattern is less than the UE for supporting TM3 pattern；Accordingly, it would be desirable to according to support TM3 pattern UE number come Determine whether base station switches to TM3, it is ensured that support the Consumer's Experience of the UE of TM3 pattern.

Specifically, after base station switches to TM3, also include：

Communication cell of the base station in coverage sends cell reference signals CRS, each UE to each UE and receives CRS After carry out channel estimation, and obtain channel estimation results；Each UE reports order instruction RI to base station, base according to channel estimation results Standing, the running time-frequency resource RB for distributing to each UE is calculated according to RI.

It should be noted that base station here can also be called evolved Node B (English full name：Evolved Node B, referred to as：eNodeB)；The interior communication cell in coverage in base station sends cell reference signals CRS to each UE, only props up The terminal for holding TM4 can just receive CRS, and enter channel estimation according to CRS.

The changing method of different transmission mode in lte-a system is embodiments provided, base station is covered by obtaining In the range of the transmission mode supported of each UE and support port number N, and count the first sum and the second sum, wherein first Sum is the sum of UE of the base station in coverage, and the port number that the second sum is supported in coverage for base station is 8 The sum of UE；By calculating the ratio of the second sum and the first sum；When the second sum accounts for the ratio≤K1 of the first sum, base Station switches to transmission mode TM3, wherein 0 ＜ K1≤1；So as to the transmission mode that base station can be supported according to UE in coverage The ratio of quantity of total UE being accounted for different transmission modes are opened, TM9 is adopted so as to solve lte-a system in prior art During operation, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system using TM3 or During TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The scene two, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, as Fig. 3 institute Show including：

S1012, base station obtain the port number N, wherein N ∈ of the transmission mode that in coverage, each UE is supported and support {2,4,8}.

The UE of S1022, base station statistics in coverage, obtains the first sum and the second sum；Wherein the first sum is The sum of UE of the base station in coverage, the second sum is the UE that the port number that supports in coverage in base station is 8 Sum.

First ratio of S1032, the second sum of calculating and the first sum.

S1042, when the first ratio≤the first predetermined threshold value K1, base station switches to TM4, wherein 0 ＜ K1≤1.

It should be noted that the UE due to base station in coverage is not all support TM4, and support TM3 pattern The quantity of the UE of UE and support TM9 pattern is less than the UE for supporting TM4 pattern；Accordingly, it would be desirable to according to support TM4 pattern UE number come Determine whether base station switches to TM4, it is ensured that support the Consumer's Experience of the UE of TM4 pattern.

Specifically, after base station switches to TM4, also include：

Communication cell of the base station in coverage sends cell reference signals CRS, each UE to each UE and receives CRS After carry out channel estimation, and obtain channel estimation results；Each UE reports order instruction RI to base station, base according to channel estimation results Standing, the RB for distributing to each UE is calculated according to RI.

It should be noted that the interior communication cell in coverage in base station sends cell reference signals CRS to each UE, Only support that the terminal of TM4 can just receive CRS, and channel estimation is entered according to CRS.

The changing method of different transmission mode in lte-a system is embodiments provided, base station is covered by obtaining In the range of the transmission mode supported of each UE and support port number N, and count the first sum and the second sum, wherein first Sum is the sum of UE of the base station in coverage, and the port number that the second sum is supported in coverage for base station is 8 The sum of UE；By calculating the ratio of the second sum and the first sum；When the second sum accounts for the ratio≤K1 of the first sum, base Station switches to transmission mode TM4, wherein 0 ＜ K1≤1；So as to the transmission mode that base station can be supported according to UE in coverage The ratio of quantity of total UE being accounted for different transmission modes are opened, TM9 is adopted so as to solve lte-a system in prior art During operation, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system using TM3 or During TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The embodiment three, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, such as Fig. 4 As follows with concrete implementation mode shown in Fig. 5：

The scene one, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, as Fig. 4 institute Show including：

S1013, base station obtain the port number N, wherein N ∈ of the transmission mode that in coverage, each UE is supported and support {2,4,8}.

The UE of S1023, base station statistics in coverage, obtains the first sum and the second sum；Wherein the first sum is The sum of UE of the base station in coverage, the second sum is the UE that the port number that supports in coverage in base station is 8 Sum.

First ratio of S1033, the second sum of calculating and the first sum.

S1043, when first ratio the first predetermined threshold value K1 of ＞, base station switches to transmission mode TM9, wherein 0 ＜ K1≤ 1.

The communication cell of S1053, base station in coverage sends channel condition information to each UE and measures pilot tone CSI- RS, each UE carry out channel estimation after receiving CSI-RS, and obtain channel estimation results, and each UE is according to channel estimation results To base station upload throughput.

S1063, base station acquisition switch to first of UE in each communication cell of the front base station of TM9 in coverage and always gulp down The amount of telling.

S1073, base station obtain after switching to TM9 in each communication cell of base station in coverage the second of UE and always gulp down The amount of telling.

S1083, base station calculate the absolute value of the difference of the first total throughout and the second total throughout；

S1093, when absolute value the second predetermined threshold value K2 of ＞ that there is arbitrary communication cell, base station keeps current TM9, its Middle K2 ＞ 0.

Specifically, when absolute value≤the second predetermined threshold value K2 that there is arbitrary communication cell, base station switch to TM3 or TM4.

S1103, base station statistics are supported TM3 in coverage and support the 4th sum of the UE of TM4.

S1113, base station statistics support the 5th sum of the UE of TM9 in coverage.

S1123, base station calculate the 3rd ratio of the 4th sum and the 5th sum, and are distributed to according to the adjustment of the 3rd ratio The RB resource of TM3 and TM4 and distribute to the RB resource of TM9.

Transmission mode and RI that the UE of S1133, base station statistics in coverage is supported；

S1143, when confirming that UE supports TM9 and RI ＞ 5, the CQI lookup spectrum efficiency that base station uploads according to UE, according to Spectrum efficiency selects decode-regulating mode MCS, and distributes RB resource.

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 Confidence ceases, and calculates the translational speed of UE, and when four predetermined threshold value K4 of translational speed ＞ of UE, base station switches to TM3, concurrently Radio resource control RRC information is sent to UE.

Or

The changing method of different transmission mode in lte-a system is embodiments provided, base station is covered by obtaining In the range of the transmission mode supported of each UE and support port number N, and count the first sum and the second sum, wherein first Sum is the sum of UE of the base station in coverage, and the port number that the second sum is supported in coverage for base station is 8 The sum of UE；By calculating the ratio of the second sum and the first sum；When the second sum accounts for the ratio≤K1 of the first sum, base Station switches to transmission mode TM9, wherein 0 ＜ K1≤1；So as to the transmission mode that base station can be supported according to UE in coverage The ratio of quantity of total UE being accounted for different transmission modes are opened, TM9 is adopted so as to solve lte-a system in prior art During operation, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system using TM3 or During TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The scene two, embodiment of the present invention provides a kind of changing method of different transmission mode in lte-a system, as Fig. 5 institute Show including：

S1014, base station obtain the port number N, wherein N ∈ of the transmission mode that in coverage, each UE is supported and support {2,4,8}.

The UE of S1024, base station statistics in coverage, obtains the first sum and the second sum；Wherein the first sum is The sum of UE of the base station in coverage, the second sum is the UE that the port number that supports in coverage in base station is 8 Sum.

First ratio of S1034, the second sum of calculating and the first sum.

S1044, when first ratio the first predetermined threshold value K1 of ＞, base station switches to transmission mode TM9, wherein 0 ＜ K1≤ 1.

The communication cell of S1054, base station in coverage sends channel condition information to each UE and measures pilot tone CSI- RS, each UE carry out channel estimation after receiving CSI-RS, obtain channel estimation results, each UE according to channel estimation results to Base station uploads RI.

S1064, base station statistics support TM9 and threeth sum of the RI more than 4 UE in coverage.

S1074, base station calculate the second ratio of the 3rd sum and the first sum.

S1084, when the second ratio three predetermined threshold value K3 of ＞, base station keeps current TM9.

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

S1094, when absolute value the second predetermined threshold value K2 of ＞ that there is arbitrary communication cell, base station keeps current TM9, its Middle K2 ＞ 0.

S1104, base station statistics are supported TM3 in coverage and support the 4th sum of the UE of TM4.

S1114, base station statistics support the 5th sum of the UE of TM9 in coverage.

S1124, base station calculate the 3rd ratio of the 4th sum and the 5th sum, and are distributed to according to the adjustment of the 3rd ratio The RB resource of TM3 and TM4 and distribute to the RB resource of TM9.

Transmission mode and RI that the UE of S1134, base station statistics in coverage is supported；

S1144, when confirming that UE supports TM9 and RI ＞ 5, the CQI lookup spectrum efficiency that base station uploads according to UE, according to Spectrum efficiency selects decode-regulating mode MCS, and distributes RB resource.

Or

Example IV, the embodiment of the present invention provide a kind of base station 10, include as shown in Figure 6：

Data cell 1010, for obtaining the port number N of the transmission mode of each UE support and support in coverage, Wherein N ∈ { 2,4,8 }.

Statistic unit 1020, for obtaining the transmission mould that each UE in the coverage is supported according to data cell 1010 First sum of port number N statistics of formula and support and the second sum；Wherein first sum is UE of the base station in coverage Sum, the second sum is the sum of the UE that the port number that supports in coverage in base station is 8.

Computing unit 1030, for the first sum and the second sum that count according to statistic unit 1020, calculates second total Number and the first ratio of the first sum.

Judgement unit 1040 is big with the first predetermined threshold value K1 for judging the first ratio that computing unit 1030 is calculated Little, wherein 0 ＜ K1≤1.

Switch unit 1050, when judging the first ratio ＞ K1 for judgement unit 1040, switch unit switches to transmission mould Formula TM9.

A kind of base station is embodiments provided, data cell is by obtaining the transmission that in coverage, each UE is supported The port number N of pattern and support, the first sum of statistic unit statistics and the second sum, the wherein first sum is being covered for base station In the range of UE sum, the port number that the second sum is supported in the coverage for base station is the sum of 8 UE；Computing unit By calculating the ratio of the second sum and the first sum；Judgement unit judges to account for the ratio≤K1 of the first sum when the second sum When, switch unit switches to transmission mode TM9, wherein 0 ＜ K1≤1；Can be supported according to UE in coverage so as to base station Transmission mode account for total UE quantity ratio opening different transmission modes, so as to solve LTE-A in prior art When system is run using TM9, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system Using during TM3 or TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The embodiment five, embodiment of the present invention provides a kind of base station 10, and concrete implementation mode as shown in Figure 7 is as follows：

The scene one, embodiment of the present invention provides a kind of base station 10, includes as shown in Figure 7：

Switch unit 1050, when being additionally operable to judgement the first ratio≤K1 of judgement unit 1040, switch unit 1050 is switched to Transmission mode TM3.

Signal transmitting unit 1060, for sending cell reference signals to each UE of the communication cell in coverage CRS.

Information receiving unit 1070, for receiving the order that the CRS that each UE sends is reported according to signal transmitting unit 1060 Indicate RI.

Resource allocation unit 1080, calculate for the RI that received according to information receiving unit 1070 distribute to each UE when Frequency resource RB.

A kind of base station is embodiments provided, data cell is by obtaining the transmission that in coverage, each UE is supported The port number N of pattern and support, the first sum of statistic unit statistics and the second sum, the wherein first sum is being covered for base station In the range of UE sum, the port number that the second sum is supported in the coverage for base station is the sum of 8 UE；Computing unit By calculating the ratio of the second sum and the first sum；Judgement unit judges to account for the ratio≤K1 of the first sum when the second sum When, switch unit switches to transmission mode TM3, wherein 0 ＜ K1≤1；Can be supported according to UE in coverage so as to base station Transmission mode account for total UE quantity ratio opening different transmission modes, so as to solve LTE-A in prior art When system is run using TM9, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system Using during TM3 or TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The scene two, embodiment of the present invention provides a kind of base station 10, includes as shown in Figure 7：

Switch unit 1050, when being additionally operable to judgement the first ratio≤K1 of judgement unit 1040, switch unit 1050 is switched to Transmission mode TM4.

A kind of base station is embodiments provided, data cell is by obtaining the transmission that in coverage, each UE is supported The port number N of pattern and support, the first sum of statistic unit statistics and the second sum, the wherein first sum is being covered for base station In the range of UE sum, the port number that the second sum is supported in the coverage for base station is the sum of 8 UE；Computing unit By calculating the ratio of the second sum and the first sum；Judgement unit judges to account for the ratio≤K1 of the first sum when the second sum When, switch unit switches to transmission mode TM4, wherein 0 ＜ K1≤1；Can be supported according to UE in coverage so as to base station Transmission mode account for total UE quantity ratio opening different transmission modes, so as to solve LTE-A in prior art When system is run using TM9, in lte-a system, RB resource gain can not be obtained using the UE of TM3 or TM4；Or lte-a system Using during TM3 or TM4 operation, the problem of RB resource gain in lte-a system, can not be obtained using the UE of TM9.

The embodiment six, embodiment of the present invention provides a kind of base station 10, and concrete implementation mode as shown in Figure 8 is as follows：

The scene one, embodiment of the present invention provides a kind of base station 10, includes as shown in Figure 8：

Signal transmitting unit 1060, for sending channel condition information survey to each UE of the communication cell in coverage Amount pilot tone CSI-RS；

Signal receiving unit 1070, for receiving what the CSI-RS that each UE is sent according to signal transmitting unit 1060 was reported Handling capacity；

Data cell 1020, is additionally operable to obtain the handling capacity of each UE of the reception of signal receiving unit 1070；

Statistic unit 1020, the handling capacity of each UE being additionally operable to according to the acquisition of data cell 1010, count switch unit 1050 the first total throughouts for switching to UE in each communication cell in coverage before TM9；

Statistic unit 1020, the handling capacity of each UE being additionally operable to according to the acquisition of data cell 1010, count switch unit 1050 the second total throughouts for switching to UE in each communication cell in coverage after TM9；

Computing unit 1030, the first total throughout and the second total throughout being additionally operable to according to statistic unit statistics 1020, Calculate the absolute value of the difference of the first total throughout and the second total throughout；

Judgement unit 1040, is additionally operable to judge the absolute value of the calculating of computing unit 1030 and the size of the second predetermined threshold value, Wherein K2 ＞ 0；

Switch unit 1050, when being additionally operable to judgement absolute value the second predetermined threshold value K2 of ＞ of judgement unit 1040, switch unit Keep current TM9.

Specifically, switch unit 1050, when being additionally operable to judgement absolute value≤the second predetermined threshold value K2 of judgement unit 1040, cut Change unit 1050 and switch to TM3 or TM4.

Statistic unit 1020, is additionally operable to the transmission that each UE is supported in the coverage for obtaining according to data cell 1010 Mode statistical is supported TM3 in coverage and supports the 4th sum of the UE of TM4；

Statistic unit 1020, is additionally operable to the transmission that each UE is supported in the coverage for obtaining according to data cell 1010 Mode statistical supports the 5th sum of the UE of TM9 in coverage；

Computing unit 1030, is additionally operable to the 4th sum and the 5th sum for counting according to statistic unit 1020, calculates the 4th Sum and the 3rd ratio of the 5th sum；

Resource allocation unit 1080, for the 3rd ratio for being calculated according to computing unit 1030, adjustment distribute to TM3 with The RB resource of TM4 and the RB resource for distributing to TM9.

Specifically, resource allocation unit 1080, are additionally operable to adjust the RB resource for distributing to TM3 and TM4 and distribute to TM9's After RB resource, adjust the RB resource for distributing to TM3 and TM4 and distribute to TM9 according to the RI of the UE upload in coverage RB resource.

Statistic unit 1020, is additionally operable to transmission mode and RI that UE of the statistics in coverage is supported；

Judgement unit 1040, is additionally operable to the transmission mould that supports according to the UE in coverage that statistic unit 1020 is counted Formula and RI, judge that UE supports TM9 and whether RI is more than 5；

Control unit 1110, when judging that UE supports TM9 and RI ＞ 5 for judgement unit 1040, control unit 1110 Spectrum efficiency is searched according to the CQI that UE is uploaded, decode-regulating mode MCS is selected according to spectrum efficiency；

Resource allocation unit 1080, is additionally operable to the MCS for selecting according to control unit 1110, distributes RB resource.

Specifically, base station also includes map unit 1090, for providing positional information of the UE in n-hour, wherein N >=1 And N is integer；

Map unit 1090, also provides for judgement unit 1040 and judges that UE supports the UE of TM9 and RI≤5 in N The positional information at quarter and the positional information in N-1 moment；

Computing unit 1030, is additionally operable to positional information and the N-1 of the UE in n-hour of the offer of unit 1090 according to the map The positional information in moment, calculates the translational speed of UE；

Judgement unit 1040, is additionally operable to judge translational speed and the 4th predetermined threshold value K4 of the UE of the calculating of computing unit 1030 Size, wherein K4 ＞ 0；

Switch unit 1050, when being additionally operable to the translational speed ＞ K4 that judgement unit 1040 judges UE, switch unit 1050 is cut Shift to TM3；

Signal transmitting unit 1060, when being additionally operable to switch unit 1050 and switching to TM3, signal transmitting unit 1060 sends no Line resources control rrc message is to UE；

Signal receiving unit 1070, is additionally operable to receive the RI of UE upload.

Or

Switch unit 1050, when being additionally operable to translational speed≤K4 that judgement unit 1040 judges UE, switch unit 1040 is cut Shift to TM4；

Signal transmitting unit 1060, when being additionally operable to switch unit 1050 and switching to TM4, signal transmitting unit 1060 sends no Line resources control rrc message is to UE；

The scene two, embodiment of the present invention provides a kind of base station 10, includes as shown in Figure 8：

Signal receiving unit 1070, for receiving what the CSI-RS that each UE is sent according to signal transmitting unit 1060 was reported RI；

Data cell 1010, is additionally operable to obtain the RI that each UE of the reception of signal receiving unit 1070 is uploaded；

Statistic unit 1020, is additionally operable to the RI for uploading and each UE according to each UE that data cell 1010 is obtained and supports Transmission mode, statistics supports the 3rd sum of TM9 and RI more than 4 UE；

Computing unit 1030, is additionally operable to the 3rd sum for counting according to statistic unit 1020, calculates the 3rd sum and first Second ratio of sum；

Judgement unit 1040, is additionally operable to judge that the second ratio of the calculating of computing unit 1030 is big with the 3rd predetermined threshold value K3 Little, wherein 0≤K3≤1；

Switch unit 1050, when being additionally operable to the second ratio ＞ K3 of judgement of judgement unit 1040, switch unit 1050 keeps working as Front TM9.

Specifically, switch unit 1050, when being additionally operable to judgement the second ratio≤K3 of judgement unit 1040, switch unit 1050 Switch to TM3 or TM4.

Or

Switch unit 1050, when being additionally operable to translational speed≤K4 that judgement unit 1040 judges UE, switch unit 1050 is cut Shift to TM4；

The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the scope of the claims.

Claims

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：

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：

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；

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：

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 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.