CN106487431A - A kind of method and apparatus for switching downlink transfer pattern in mimo systems - Google Patents

A kind of method and apparatus for switching downlink transfer pattern in mimo systems Download PDF

Info

Publication number
CN106487431A
CN106487431A CN201510535938.8A CN201510535938A CN106487431A CN 106487431 A CN106487431 A CN 106487431A CN 201510535938 A CN201510535938 A CN 201510535938A CN 106487431 A CN106487431 A CN 106487431A
Authority
CN
China
Prior art keywords
predetermined
switching
throughput
transmission mode
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510535938.8A
Other languages
Chinese (zh)
Inventor
赵昆
殷玮玮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Shanghai Bell Co Ltd
Original Assignee
Alcatel Lucent Shanghai Bell Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent Shanghai Bell Co Ltd filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to CN201510535938.8A priority Critical patent/CN106487431A/en
Publication of CN106487431A publication Critical patent/CN106487431A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0604—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching with predefined switching scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a kind of method for switching downlink transfer pattern in mimo systems, wherein, the method is comprised the following steps：A., when determining that handoff parameter meets predetermined switching condition according to the current transmission mode of user equipment, the first indication information corresponding with the current transmission mode is obtained；B. object transmission pattern is switched to from the current transmission mode, and obtain the second indication information corresponding with the object transmission pattern；C. according to first indication information and second indication information, the handling capacity change information corresponding with this handover operation is obtained.According to the solution of the present invention, the handling capacity situation of change caused by handover operation can be counted such that it is able to predetermined switching condition is adaptively adjusted, so that downlink system handling capacity can be optimized during switching transmission mode.

Description

A kind of method and apparatus for switching downlink transfer pattern in mimo systems
Technical field
The present invention relates to communication technical field, more particularly to a kind of for cutting in mimo systems The method and apparatus for changing row transmission mode.
Background technology
In prior art, in MIMO (Multiple-Input Multiple-Output, multi input Multi output) carry out the switching of downlink transfer pattern in system during, it is not intended that switching behaviour Impact of the work to throughput of system, also, be switching generally by the way of artificial setting at present One static threshold value of parameter setting, it is 14db such as to arrange the corresponding threshold value of SINR, this So that handover operation may greatly cause the reduction of system throughput, so as to further such that logical The performance of letter system reduces.For example, Fig. 3 is that the employing channel simulator of an example exists respectively IMTA (International Mobile Telecommunications-Advanced, the advanced world Mobile communication) and SCME (Spatial Channel Model Extension, space channel mould Type is expanded) the measurement result schematic diagram that measures for TM3 and TM8 in channel, wherein, IMTA is visual channel, and SCME is non-visible channel, and Line1 shows in IMTA and believes Using descending throughput of system during TM3 with the situation of change of SINR in road, Line2 shows Using descending throughput of system during TM8 with the situation of change of SINR in IMTA channel, Line3 is shown using descending throughput of system during TM3 with SINR's in SCME channel Situation of change, Line4 are shown using descending throughput of system during TM8 in SCME channel Situation of change with SINR；Used as an example, the scheme according to prior art is SINR Static threshold value 14db being set, being seen based on Fig. 3, it is evident that then working as 14db<SINR<20db When, if switching to TM3 in TM8 from IMTA channel, throughput of system can be caused to reduce.
Additionally, in mimo systems, throughput of system would generally be affected by various factors, SINR (Signal to Interference plus Noise Ratio, signal and interference as receiver Plus noise ratio), type (the descending system under two kinds of space channels as shown in Figure 3 of space channel System handling capacity is very big with the situation of change difference of SINR), multiple users or multiple minizones Space interference etc.；However, the restriction of the measurement capability due to user equipment so that base station is not Can be based on the measurement result of user equipment come relatively accurately estimating system handling capacity, that is, no Know impact of the switching to throughput of system legally, then according to manually setting in prior art The scheme of fixed static threshold value, it is impossible to take into account above-mentioned various factors, most probably so that big The handover operation of amount causes the reduction of throughput of system；Additionally, the complication of channel is (especially The complication of commercial channel) so that the artificial scheme works for setting static threshold value are worse, And as the threshold value set needed for each cell is probably different, then need to spend greatly The manpower of amount and time resource.
Content of the invention
It is an object of the invention to provide a kind of for switching downlink transfer pattern in mimo systems Method and apparatus.
According to an aspect of the present invention, one kind is provided for switching descending biography in mimo systems The method of defeated pattern, wherein, the method is comprised the following steps：
A. when determining that handoff parameter meets predetermined switching condition according to the current transmission mode of user equipment When, obtain first indication information corresponding with the current transmission mode；
B. object transmission pattern is switched to from the current transmission mode, and obtain and target biography The second corresponding indication information of defeated pattern；
C. according to first indication information and second indication information, obtain and this switching behaviour Make corresponding handling capacity change information.
According to another aspect of the present invention, one kind is additionally provided for cutting in mimo systems The device of row transmission mode is changed, wherein, the device includes following device：
First obtains device, for determining switching ginseng when the current transmission mode based on user equipment When number meets predetermined switching condition, first index corresponding with the current transmission mode is obtained Information；
Switching device, for switching to object transmission pattern from the current transmission mode, and obtains Obtain second indication information corresponding with the object transmission pattern；
Second obtains device, for being believed according to first indication information and second index Breath, obtains the handling capacity change information corresponding with this handover operation.
Compared with prior art, the present invention has advantages below：1) base station is in switching transmission mould During formula, can be obtained after the first indication information for obtaining before the handover and switching Second indication information, obtains the handling capacity change information corresponding with handover operation, so as to standard The change of throughput of system this handover operation caused by really is obtained；2) can according to At least one corresponding handling capacity change information of switching direction, statistics are obtained on the switching direction Throughput statistics information, so as to count under current predetermined switching condition performed switching The situation of change of the caused throughput of system of operation；3) can according to throughput statistics information, To be adaptively adjusted current predetermined switching condition, so that as handover operation optimizes descending system System handling capacity, can meet operator and wish that whole or specific part handover operation causes system throughput The situation that amount is improved；4) manually set or adjust for each cell without the need for site operation personnel The corresponding predetermined threshold of whole handoff parameter, can be adaptively adjusted corresponding with handoff parameter predetermined Threshold value, so as to greatly save manpower and time resource, also, based on corresponding with handoff parameter Predetermined adjusted value, can gradually adjust predetermined threshold, corresponding with handoff parameter to obtain Optimum predetermined threshold, so as to handover operation optimize downlink system handling capacity；5) side Case is simply easily realized, and without the need for introducing new signaling or time delay between base station and user equipment, no Base station and user equipment can be affected to execute normal handover operation, it is only necessary in the existing tune of base station side Very simple modification is carried out in degree scheme and just can be adaptively adjusted predetermined switching condition, optimize Throughput of system；6) multiple beamforming systems, such as SU-MIMO (Single can be applied to User MIMO, Single User MIMO), MU-MIMO (Multiple-User-MIMO, Multiuser MIMO), CoMP (Coordinated Multiple Points, multipoint cooperative) etc..
Description of the drawings
By reading the detailed description made by non-limiting example that is made with reference to the following drawings, The other features, objects and advantages of the present invention will become more apparent upon：
Fig. 1 is for one embodiment of the invention for switching downlink transfer in mimo systems The schematic flow sheet of the method for pattern；
Fig. 2 is for one embodiment of the invention for switching downlink transfer in mimo systems The structural representation of the device of pattern；
Fig. 3 is the employing channel simulator of an example respectively in IMTA and SCME channel For the measurement result schematic diagram that TM3 and TM8 are measured.
In accompanying drawing, same or analogous reference represents same or analogous part.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 is for one embodiment of the invention for switching downlink transfer in mimo systems The schematic flow sheet of the method for pattern.
Wherein, the method for the present embodiment is mainly realized by base station；Preferably, the base station Belong to LTE system, it is highly preferred that the base station belongs to LTE TDD system.
It should be noted that the base station and communication system are only for example, other are existing or modern The base station being likely to occur afterwards and communication system are such as applicable to the present invention, should also be included in the present invention Within protection domain, and it is incorporated herein with way of reference.
Method according to the present embodiment includes step S1, step S2 and step S3.
In step sl, when determining that handoff parameter is full according to the current transmission mode of user equipment During the predetermined switching condition of foot, base station obtains first index corresponding with the current transmission mode Information.
Wherein, the user equipment includes but is not limited to panel computer, smart mobile phone, PDA etc. Any can be with the user equipment of base station communication.
Wherein, the current transmission mode includes the descending biography supported by any mimo system Defeated pattern, such as at present defined transmission mode 3 (TM3), transmission mode 8 (TM8), Transmission mode 9 (TM9), transmission mode 10 (TM10), and be likely to occur in the future Other transmission modes.Similarly, object transmission pattern hereinafter equally include any base station and The downlink transfer pattern that user equipment can be supported.
Wherein, the handoff parameter includes any ginseng that can be used in and judge whether to switch Number, such as SINR, RI (Rank Indication, order instruction), space channel type (such as Visual or non-visual), channel coherence etc..Wherein, base station can obtain institute using various ways State the value of handoff parameter；For example, base station receives the measurement report from user equipment, the measurement Report includes the handoff parameter for indicate how switching over, then base station is from the measurement report The value of the extracting directly handoff parameter；Again for example, base station receives the measurement report from user equipment Accuse, the measurement report includes that (Channel Quality Indicator, channel quality are indicated CQI Symbol), then scheduler (scheduler) in base station according to the CQI and is used for CQI The special algorithm of SINR is converted to, is calculated the value of handoff parameter SINR.Need explanation , the implementation of the value of above-mentioned acquisition handoff parameter is only for example, and other any acquisitions are cut The implementation of the value of parameter is changed, be should be included in the scope of the present invention.
Wherein, the predetermined switching condition includes any predetermined for judging whether to switching Condition.Preferably, the predetermined switching condition further indicates the object transmission for needing to switch to Pattern.Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, Then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mode TM3 Switch to object transmission pattern TM8；Used as another example, predetermined switching condition is indicated：If Current transmission mode is TM8, then when SINR is more than predetermined threshold T1 and parameter During pmiRIreport=false, object transmission pattern is switched to from current transmission mode TM3 TM8.
Wherein, first indication information includes any for indicating the index before handover operation Information；Wherein, the index includes any index related to throughput of system；Preferably, The index is included but is not limited to：The front base station of throughput of system, handover operation before handover operation Significant bit rate (i.e. base station a period of time in send effective number of bits) etc., it is preferable that The index is defined index in the communication system protocol of prior art, or can be based on The defined index and calculated index.
Specifically, base station obtains the value of handoff parameter under current transmission mode, and when according to current When transmission mode determines that the value of the handoff parameter meets predetermined switching condition, base station obtains and works as The first corresponding indication information of front transmission mode.
Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, When handoff parameter SINR is less than or equal to predetermined threshold T1, cut from current transmission mode TM3 Shift to object transmission pattern TM8；The current transmission mode of base station is TM3, when base station determines Handoff parameter SINR<During T1 (namely handoff parameter SINR meets the predetermined switching condition), Base station obtains current significant bit rate rate_TM3_Before_switch in the base station and (namely cuts Significant bit rate corresponding with TM3 before changing).
Used as another example, predetermined switching condition is indicated：If current transmission mode is TM8, Then when SINR is more than predetermined threshold T1 and parameter pmiRIreport=false (pmiRIreport For defined parameter in existing communication agreement) when, switch to from current transmission mode TM8 Object transmission pattern TM3；The current transmission mode of base station is TM8, when base station determines switching Parameter SINR>(namely handoff parameter SINR meets the predetermined switching condition), base station during T1 Obtain current significant bit rate rate_TM8_Before_switch in the base station (namely switching before Significant bit rate corresponding with TM8).
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any when according to user equipment Current transmission mode when determining that handoff parameter meets predetermined switching condition, obtain current with described The implementation of the first corresponding indication information of transmission mode, should be included in the model of the present invention In enclosing.
In step s 2, base station switches to object transmission pattern from current transmission mode, and obtains Obtain second indication information corresponding with object transmission pattern.
Wherein, second indication information includes any for indicating the index after handover operation Information；Wherein, second indication information and the index phase indicated by first indication information With.For example, the first indication information indicates the front base station of handover operation having in a period of time interior transmission Effect bit number, after the second indication information indicates handover operation, base station was sent within one end time Effective number of bits.It should be noted that first indication information and second index letter Breath can be used in judging the situation of change as handover operation is the throughput of system for causing.
Specifically, base station switches to object transmission pattern from current transmission mode, and in switching behaviour After the completion of work, second indication information corresponding with object transmission pattern is obtained.
It should be noted that in step s 2, base station also by signal notifying user equipment from The current transmission mode switches to the object transmission pattern.
Used as an example, base station switches to object transmission pattern from current transmission mode TM3 TM8, and notifying user equipment switches to object transmission pattern from current transmission mode TM3 TM8, and after the completion of handover operation, obtain the second indication information currently under TM8.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any from current transmission mode Object transmission pattern is switched to, and obtains second indication information corresponding with object transmission pattern Implementation, should be included in the scope of the present invention.
In step s3, base station is according to first indication information and second indication information, Obtain the handling capacity change information corresponding with this handover operation.
Wherein, the handling capacity change information includes any for indicating to be drawn by this handover operation The information of the situation of change of the throughput of system for rising.Preferably, the handling capacity change information bag Include but be not limited to：For indicate this handover operation cause throughput of system improve information, use Cause information of throughput of system reduction etc. in this handover operation of instruction.
Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, When handoff parameter SINR is less than or equal to predetermined threshold T1, cut from current transmission mode TM3 Shift to object transmission pattern TM8；In step sl, when the current transmission according to user equipment When pattern TM3 determines that handoff parameter SINR meets the predetermined switching condition, base station obtains switching The front first indication information rate_TM3_Before_switch corresponding with TM3 (namely switching Front significant bit rate corresponding with TM3)；In step s 2, base station is switched to from TM3 TM8, and obtain the rate_TM8_After_switch corresponding with TM8 after switching (namely Significant bit rate corresponding with TM8 after switching)；In step s3, base station according to Rate_TM3_Before_switch and rate_TM8_After_switch, obtains and this switching The corresponding handling capacity change information of operation, the handling capacity change information indicate this handover operation Throughput of system is caused to improve.
Used as another example, predetermined switching condition is indicated：If current transmission mode is TM8, Then when SINR is more than predetermined threshold T1 and during parameter pmiRIreport=false, from working as forward pass Defeated pattern TM8 switches to object transmission pattern TM3；In step sl, when being set according to user Standby current transmission mode TM8 determines that handoff parameter SINR and pmiRIreport meets and is somebody's turn to do During predetermined switching condition, base station obtains front first indication information corresponding with TM8 of switching Rate_TM8_Before_switch (namely significant bit rate corresponding with TM8 before switching)； In step s 2, base station switches to TM3 from TM8, and obtains relative with TM3 after switching The rate_TM3_After_switch (namely significant bit rate corresponding with TM3 after switching) for answering； In step s3, base station according to rate_TM8_Before_switch and Rate_TM3_After_switch, obtains the handling capacity change letter corresponding with this handover operation Breath, the handling capacity change information indicate that this handover operation causes throughput of system to reduce.
It should be noted that the example above is only, and technical scheme is better described, rather than Limitation of the present invention, it should be appreciated by those skilled in the art that any believe according to first index Breath and second indication information, obtain the handling capacity change letter corresponding with this handover operation The implementation of breath, should be included in the scope of the present invention.
Used as a kind of preferred version of the present embodiment, the method for the present embodiment also includes step S4.
In step s 4, for from the current transmission mode to the object transmission pattern Switching direction, base station is according to currently acquired corresponding with the switching direction at least one Handling capacity change information, obtains the throughput statistics information corresponding with the switching direction.
Wherein, the throughput statistics information includes any for cutting for executing on switching direction Change the statistical information of the caused handling capacity situation of change of operation.Preferably, the handling capacity system Meter information is included but is not limited to：
1) from the off, based on the secondary of the whole handover operations performed by the switching direction Number.For example, from the off, statistics obtain on the switching direction from TM3 to TM8 The number of times of performed whole handover operations.
Wherein, the starting point is used for the time point of the counting for indicating to start handover operation.Base station can Determined using various ways or more New count starting point；For example, to complete predetermined switching every time The moment of the adjustment of condition is starting point, enters come the handover operation to executing on the switching direction Row is counted；Again for example, whenever the handover operation of pre-determined number is completed in the switching direction, With the moment as starting point, restart to carry out the handover operation executed on the switching direction Count；Again for example, base station resets starting point according to the instruction of operating personnel, comes again to described The handover operation executed on switching direction is counted.
2) in whole handover operations so that the switching that throughput of system reduces or improves The number of times of operation.For example, from the off, institute on the switching direction from TM3 to TM8 The number of times of the whole handover operations for executing is 10, wherein so that the switching that throughput of system reduces The number of times of operation is 2 so that the number of times of the handover operation that throughput of system is improved is 8.
3) in whole handover operations so that the switching that throughput of system reduces or improves Operation accounts for the ratio of whole handover operations.For example, from the off, based on the switching In whole handover operations performed by direction, 10% handover operation causes throughput of system to drop Low, 90% handover operation causes throughput of system to improve.
It should be noted that above-mentioned throughput statistics information is only for example, those skilled in the art It will be understood that any quantitative change of handling up for caused by the handover operation executed on switching direction The statistical information (the handling capacity change information as corresponding to each handover operation) of change situation, Should be included in the range of throughput statistics information of the present invention.
Specifically, for from the current transmission mode to the switching side of the object transmission pattern To base station is according to currently acquired at least one handling capacity corresponding with the switching direction Change information, obtains the implementation of the throughput statistics information corresponding with the switching direction Including but not limited to：
1) corresponding with this handover operation gulping down is obtained whenever step S3 of base station execution The amount of telling change information, base station just execution step S4 obtaining (or renewal) and this switching behaviour The corresponding throughput statistics information of the switching direction of work.
As an example of this implementation, based on the switching direction of TM3 to TM8, when Times N um1 of the handover operation for causing throughput of system reduction of front statistics is 4 so that be Times N um2 of the handover operation that system handling capacity is improved is 8；In step s3, base station obtains Handling capacity change information Info1, the Info1 indicate that the handover operation on the switching direction draws Play throughput of system to improve；Then, Num2 is updated to 9 by base station execution step S4；One section After time, base station execution step S3 again, obtain handling capacity change information Info2, the Info2 Indicate that the handover operation on the switching direction causes throughput of system to reduce；Then, base station Num1 is updated to 5 by execution step S4.
2) it is spaced at predetermined time intervals, just execution step S4 is come according between the scheduled time for base station Every interior the obtained at least one handling capacity change information corresponding with the switching direction, come Obtain (or renewal) throughput statistics information corresponding with the switching direction.
As an example of this implementation, and the switching direction based on TM3 to TM8, Times N um1 of the handover operation for causing throughput of system reduction of current statistic is 4 so that Times N um2 of the handover operation that throughput of system is improved is 8；Interior base at preset time intervals Station obtains the handling capacity change information Info1 corresponding with the switching direction and Info2, its In, Info1 indicates that the handover operation on the switching direction causes throughput of system to improve, The Info2 indicates that the handover operation on the switching direction causes throughput of system to reduce, then Num1 is updated to 5, and Num2 is updated to 9 according to Info1 and Info2 by base station.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any for from described current Transmission mode to the switching direction of the object transmission pattern, base station according to currently acquired with At least one corresponding handling capacity change information of the switching direction, obtains and the switching side To the implementation of corresponding throughput statistics information, the scope of the present invention is should be included in Interior.
Used as a kind of scheme being more highly preferred to of the preferred version, the method for the present embodiment is also wrapped Include step S5.
In step s 5, when according to the predetermined adjustment bar of throughput statistics information determination satisfaction During part, base station adjusts the predetermined switching condition.
Wherein, the predetermined regularization condition includes any predetermined bar for triggering adjustment operation Part.Preferably, the predetermined regularization condition is included but is not limited to：
1) on a switching direction, so that throughput of system is reduced switching The number of times of operation is greater than or equal to the first frequency threshold value, or so that throughput of system is improved The number of times of handover operation is less than or equal to the second frequency threshold value.
2) on a switching direction, so that throughput of system is reduced switching Operation accounts for the ratio of whole handover operations more than or equal to the first predetermined ratio, or so that it is The ratio that the handover operation that system handling capacity is improved accounts for whole handover operations is pre- less than or equal to second Certainty ratio.
It should be noted that above-mentioned predetermined regularization condition is only for example, those skilled in the art should It is understood that any predetermined condition for triggering adjustment operation should be included in institute of the present invention In the range of the predetermined regularization condition that states.
Wherein, base station can judge whether to meet in advance according to throughput statistics information in a number of situations Set the tone shelf-regulating Conditions.For example, when from the off, based on the whole switchings performed by switching direction When the number of times of operation reaches total degree threshold value, base station is according to handling capacity currently on switching direction Statistical information judges whether to meet predetermined regularization condition；Again for example, whenever on switching direction Throughput statistics information changes, and base station just according to current throughput statistics information judgement is No meet predetermined regularization condition.
Used as a kind of preferred version of step S5, the predetermined switching condition includes and switching ginseng The corresponding predetermined threshold of number, step S5 are further comprising the steps：When according to institute State throughput statistics information to determine when meeting predetermined regularization condition, base station according to the switching ginseng The corresponding predetermined adjusted value of number, adjusts the predetermined threshold.
It should be noted that can be arranged using various ways corresponding with handoff parameter initial pre- Determine threshold value, such as base station sets at random, rule of thumb set by operating personnel.
Wherein, the predetermined adjusted value is the adjustment for handoff parameter set in advance in base station Amplitude.It should be noted that a handoff parameter can correspond at least one predetermined adjusted value；Example Such as, the predetermined adjusted value corresponding with handoff parameter SINR is fixed as 1db；Again for example, pin To handoff parameter SINR, work as SINR<During 10db, its corresponding predetermined adjusted value is 2db, Work as SINR>During=10db, its corresponding predetermined adjusted value is 1db；Again for example, R1 represent from Starting point starts on the switching direction of TM3 to TM8, so that throughput of system is reduced switching behaviour The ratio of whole handover operations is accounted for, works as R1<When 0.2, corresponding with handoff parameter SINR pre- Adjusted value is determined for 1db, work as R1>When=0.2, predetermined adjustment corresponding with handoff parameter SINR It is worth for 2db.It should be noted that corresponding with handoff parameter making a reservation for can be arranged using multiple Adjusted value, such as random setting, rule of thumb setting etc..
Specifically, when predetermined regularization condition is met according to throughput statistics information determination, Base station adjusts the predetermined threshold according to the predetermined adjusted value corresponding with the handoff parameter Implementation is included but is not limited to：
1) handoff parameter is only corresponded to and corresponds to a predetermined adjusted value, when according to handling capacity system Meter information determined when meeting predetermined regularization condition, base station according to the predetermined adjusted value, increase or Reduce the predetermined threshold corresponding with handoff parameter.
Used as an example, current predetermined switching condition is indicated：If current transmission mode is TM3, then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mould Formula TM3 switches to object transmission pattern TM8；Predetermined regularization condition is：From the off, The number of times of on the switching direction of TM3 to TM8, so that throughput of system is reduced handover operation Greater than or equal to the first frequency threshold value C1；It is pre- when this is met according to the determination of throughput statistics information Set the tone shelf-regulating Conditions when, predetermined threshold T1 is adjusted to T1-T2 according to predetermined adjusted value T2 by base station.
As another example, currently predetermined switching condition instruction：If current transmission mode is TM8, then when SINR is more than predetermined threshold T1 and during parameter pmiRIreport=false, from working as Front transmission mode TM8 switches to object transmission pattern TM3；Predetermined regularization condition is：From Point starts, on the switching direction of TM8 to TM3, so that throughput of system is reduced switching behaviour The number of times of work is greater than or equal to the first frequency threshold value C2；When according to the determination of throughput statistics information When meeting the predetermined regularization condition, predetermined threshold T1 is adjusted by base station according to predetermined adjusted value T2 Whole for T1+T2.
2) handoff parameter corresponds to multiple predetermined adjusted values, when according to the throughput statistics information Determine when meeting predetermined regularization condition, base station according to the throughput statistics information and with described The corresponding predetermined adjusted value of handoff parameter, adjusts the predetermined threshold.
Used as an example, current predetermined switching condition is indicated：If current transmission mode is TM3, then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mould Formula TM3 switches to object transmission pattern TM8；R1 represents from the off in TM3 to TM8 Switching direction on cause the handover operation that throughput of system reduces to account for the ratio of whole handover operations Example, works as R1<When 0.2, predetermined adjusted value corresponding with handoff parameter SINR is 1db, when R1>When=0.2, predetermined adjusted value corresponding with handoff parameter SINR is 2db；When basis exists Throughput statistics information determination on the switching direction of TM3 to TM8 meets predetermined regularization condition When, base station determines R1=0.15 according to the throughput statistics information, then base station is determined using predetermined Adjusted value 1db, and predetermined threshold T1 is adjusted to T1-1.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any ought handle up according to described When amount statistical information determination meets predetermined regularization condition, according to corresponding with the handoff parameter Predetermined adjusted value, adjusts the implementation of the predetermined threshold, should be included in the model of the present invention In enclosing.
It should be noted that step S5 can be performed a plurality of times, so that it is based on final adjustment The handover operation performed by predetermined switching condition for obtaining, can cause throughput of system optimum.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any ought handle up according to described When amount statistical information determination meets predetermined regularization condition, the realization of the predetermined switching condition is adjusted Mode, should be included in the scope of the present invention.
According to the scheme of the present embodiment, base station can pass through during switching transmission mode The first indication information for obtaining before the handover and the second indication information is obtained after switching, obtain The handling capacity change information corresponding with handover operation, so as to obtain this handover operation exactly The change of caused throughput of system；Can be according to corresponding with switching direction at least one Handling capacity change information, statistics obtain the throughput statistics information on the switching direction, so as to unite Throughput of system caused by the performed handover operation under current predetermined switching condition of meter Situation of change；Current making a reservation for can be adaptively adjusted according to throughput statistics information Switching condition, so as to as handover operation optimizes downlink system handling capacity, can meet operator and wish Hope all or specific part handover operation causes the situation of throughput of system raising；Without the need for scene behaviour Make personnel the corresponding predetermined threshold of handoff parameter, energy is manually set or adjust for each cell Be adaptively adjusted predetermined threshold corresponding with handoff parameter, so as to greatly save manpower and when Between resource, also, be based on predetermined adjusted value corresponding with handoff parameter, gradually can adjust Predetermined threshold, to obtain the predetermined threshold of the optimum corresponding with handoff parameter, so as to cutting Change operation optimization downlink system handling capacity；Scheme is simply easily realized, and without the need in base station and user Equipment room introduces new signaling or time delay, does not interfere with base station and user equipment is executed and normally cut Change operation, it is only necessary to which very simple modification is carried out in the existing scheduling scheme of base station side just can be adaptive The predetermined switching condition of ground adjustment is answered, optimizes throughput of system；The scheme of the present embodiment can be fitted For multiple beamforming systems, such as SU-MIMO, MU-MIMO, CoMP etc..
Fig. 2 is for one embodiment of the invention for switching downlink transfer in mimo systems The structural representation of the device of pattern.This is used for switching the device (letter below of downlink transfer pattern Referred to as " transmission mode switching device ") include that first obtains device 1, switching device 2 and the Two obtain device 3.
Make a reservation for switching bar when determining that handoff parameter meets according to the current transmission mode of user equipment During part, the first acquisition device 1 of base station obtains first corresponding with the current transmission mode Indication information.
Wherein, the user equipment includes but is not limited to panel computer, smart mobile phone, PDA etc. Any can be with the user equipment of base station communication.
Wherein, the current transmission mode includes the descending biography supported by any mimo system Defeated pattern, such as at present defined transmission mode 3 (TM3), transmission mode 8 (TM8), Transmission mode 9 (TM9), transmission mode 10 (TM10), and be likely to occur in the future Other transmission modes.Similarly, object transmission pattern hereinafter equally include any base station and The downlink transfer pattern that user equipment can be supported.
Wherein, the handoff parameter includes any ginseng that can be used in and judge whether to switch Number, such as SINR, RI, the type of space channel, channel coherence etc..Wherein, base station can The value of the handoff parameter is obtained using various ways；For example, base station is received from user equipment Measurement report, the measurement report includes the handoff parameter for indicate how switching over, then Base station is from the value of the extracting directly handoff parameter in the measurement report；Again for example, base station receives and From the measurement report of user equipment, the measurement report includes CQI, then the scheduler root in base station Special algorithm according to the CQI and for CQI to be converted to SINR, is calculated switching ginseng The value of number SINR.It should be noted that the implementation of the value of above-mentioned acquisition handoff parameter is only For citing, the implementation of other any values for obtaining handoff parameter, the present invention is should be included in In the range of.
Wherein, the predetermined switching condition includes any predetermined for judging whether to switching Condition.Preferably, the predetermined switching condition further indicates the object transmission for needing to switch to Pattern.Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, Then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mode TM3 Switch to object transmission pattern TM8；Used as another example, predetermined switching condition is indicated：If Current transmission mode is TM8, then when SINR is more than predetermined threshold T1 and parameter During pmiRIreport=false, object transmission pattern is switched to from current transmission mode TM3 TM8.
Wherein, first indication information includes any for indicating the index before handover operation Information；Wherein, the index includes any index related to throughput of system；Preferably, The index is included but is not limited to：The front base station of throughput of system, handover operation before handover operation Significant bit rate (i.e. base station a period of time in send effective number of bits) etc., it is preferable that The index is defined index in the communication system protocol of prior art, or can be based on The defined index and calculated index.
Specifically, first the value that device 1 obtains handoff parameter under current transmission mode is obtained, and When the value for determining the handoff parameter according to current transmission mode meets predetermined switching condition, the One obtains device 1 obtains first indication information corresponding with current transmission mode.
Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, When handoff parameter SINR is less than or equal to predetermined threshold T1, cut from current transmission mode TM3 Shift to object transmission pattern TM8；The current transmission mode of base station is TM3, when first obtains Device 1 determines handoff parameter SINR<During T1 (namely handoff parameter SINR meets this and makes a reservation for cut Change condition), first obtains device 1 obtains the current significant bit rate in the base station Rate_TM3_Before_switch (namely significant bit rate corresponding with TM3 before switching).
Used as another example, predetermined switching condition is indicated：If current transmission mode is TM8, Then when SINR is more than predetermined threshold T1 and during parameter pmiRIreport=false, from working as forward pass Defeated pattern TM8 switches to object transmission pattern TM3；The current transmission mode of base station is TM8, When first obtains the determination handoff parameter SINR of device 1>During T1 (namely handoff parameter SINR is full The foot predetermined switching condition), first obtains device 1 obtains the current significant bit rate in the base station Rate_TM8_Before_switch (namely significant bit rate corresponding with TM8 before switching).
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any when according to user equipment Current transmission mode when determining that handoff parameter meets predetermined switching condition, obtain current with described The implementation of the first corresponding indication information of transmission mode, should be included in the model of the present invention In enclosing.
The switching device 2 of base station switches to object transmission pattern from current transmission mode, and obtains Second indication information corresponding with object transmission pattern.
Wherein, second indication information includes any for indicating the index after handover operation Information；Wherein, second indication information and the index phase indicated by first indication information With.For example, the first indication information indicates the front base station of handover operation having in a period of time interior transmission Effect bit number, after the second indication information indicates handover operation, base station was sent within one end time Effective number of bits.It should be noted that first indication information and second index letter Breath can be used in judging the situation of change as handover operation is the throughput of system for causing.
Specifically, switching device 2 switches to object transmission pattern from current transmission mode, and After the completion of handover operation, second indication information corresponding with object transmission pattern is obtained.
It should be noted that switching device 2 is also by signal notifying user equipment from described current Transmission mode switches to the object transmission pattern.
Used as an example, switching device 2 switches to target biography from current transmission mode TM3 Defeated pattern TM8, and notifying user equipment switches to object transmission from current transmission mode TM3 Pattern TM8, and after the completion of handover operation, obtain the second index letter currently under TM8 Breath.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any from current transmission mode Object transmission pattern is switched to, and obtains second indication information corresponding with object transmission pattern Implementation, should be included in the scope of the present invention.
Second obtains device 3 according to first indication information and second indication information, obtains Obtain the handling capacity change information corresponding with this handover operation.
Wherein, the handling capacity change information includes any for indicating to be drawn by this handover operation The information of the situation of change of the throughput of system for rising.Preferably, the handling capacity change information bag Include but be not limited to：For indicate this handover operation cause throughput of system improve information, use Cause information of throughput of system reduction etc. in this handover operation of instruction.
Used as an example, predetermined switching condition is indicated：If current transmission mode is TM3, When handoff parameter SINR is less than or equal to predetermined threshold T1, cut from current transmission mode TM3 Shift to object transmission pattern TM8；When the current transmission mode TM3 according to user equipment determines When handoff parameter SINR meets the predetermined switching condition, the first acquisition device 1 of base station is obtained The first indication information rate_TM3_Before_switch corresponding with TM3 before switching (namely Significant bit rate corresponding with TM3 before switching)；The switching device 2 of base station switches from TM3 To TM8, and obtain rate_TM8_After_switch corresponding with TM8 after switching ( Significant bit rate corresponding with TM8 after switching)；Second acquisition 3 basis of device of base station Rate_TM3_Before_switch and rate_TM8_After_switch, obtains and this switching The corresponding handling capacity change information of operation, the handling capacity change information indicate this handover operation Throughput of system is caused to improve.
Used as another example, predetermined switching condition is indicated：If current transmission mode is TM8, Then when SINR is more than predetermined threshold T1 and during parameter pmiRIreport=false, from working as forward pass Defeated pattern TM8 switches to object transmission pattern TM3；When the current transmission according to user equipment Pattern TM8 determines that handoff parameter SINR and pmiRIreport meet the predetermined switching condition When, before the first acquisition device 1 of base station obtains switching, first index corresponding with TM8 is believed Breath rate_TM8_Before_switch (namely significant bit rate corresponding with TM8 before switching)； The switching device 2 of base station switches to TM3 from TM8, and obtains corresponding with TM3 after switching Rate_TM3_After_switch (namely switching after significant bit rate corresponding with TM3)； Second acquisition device 3 of base station according to rate_TM8_Before_switch and Rate_TM3_After_switch, obtains the handling capacity change letter corresponding with this handover operation Breath, the handling capacity change information indicate that this handover operation causes throughput of system to reduce.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any refer to according to described first Mark information and second indication information, obtain the handle up quantitative change corresponding with this handover operation The implementation of change information, should be included in the scope of the present invention.
Used as a kind of preferred version of the present embodiment, the transmission mode switching device of the present embodiment is also Including statistic device (not shown).
For from the current transmission mode to the switching direction of the object transmission pattern, base station Statistic device gulp down according to currently acquired corresponding with the switching direction at least one The amount of telling change information, obtains the throughput statistics information corresponding with the switching direction.
Wherein, the throughput statistics information includes any for cutting for executing on switching direction Change the statistical information of the caused handling capacity situation of change of operation.Preferably, the handling capacity system Meter information is included but is not limited to：
1) from the off, based on the secondary of the whole handover operations performed by the switching direction Number.For example, from the off, statistics obtain on the switching direction from TM3 to TM8 The number of times of performed whole handover operations.
Wherein, the starting point is used for the time point of the counting for indicating to start handover operation.Base station can Determined using various ways or more New count starting point；For example, to complete predetermined switching every time The moment of the adjustment of condition is starting point, enters come the handover operation to executing on the switching direction Row is counted；Again for example, whenever the handover operation of pre-determined number is completed in the switching direction, With the moment as starting point, restart to carry out the handover operation executed on the switching direction Count；Again for example, base station resets starting point according to the instruction of operating personnel, comes again to described The handover operation executed on switching direction is counted.
2) in whole handover operations so that the switching that throughput of system reduces or improves The number of times of operation.For example, from the off, institute on the switching direction from TM3 to TM8 The number of times of the whole handover operations for executing is 10, wherein so that the switching that throughput of system reduces The number of times of operation is 2 so that the number of times of the handover operation that throughput of system is improved is 8.
3) in whole handover operations so that the switching that throughput of system reduces or improves Operation accounts for the ratio of whole handover operations.For example, from the off, based on the switching In whole handover operations performed by direction, 10% handover operation causes throughput of system to drop Low, 90% handover operation causes throughput of system to improve.
It should be noted that above-mentioned throughput statistics information is only for example, those skilled in the art It will be understood that any quantitative change of handling up for caused by the handover operation executed on switching direction The statistical information (the handling capacity change information as corresponding to each handover operation) of change situation, Should be included in the range of throughput statistics information of the present invention.
Specifically, for from the current transmission mode to the switching side of the object transmission pattern Gulp down to, statistic device according to currently acquired corresponding with the switching direction at least one The amount of telling change information, obtains the realization of the throughput statistics information corresponding with the switching direction Mode is included but is not limited to：
1) obtain and this handover operation phase whenever the second acquisition execution of device 3 once-through operation Corresponding handling capacity change information, statistic device just execute operation to obtain (or renewal) and this The corresponding throughput statistics information of the switching direction of secondary handover operation.
As an example of this implementation, based on the switching direction of TM3 to TM8, when Times N um1 of the handover operation for causing throughput of system reduction of front statistics is 4 so that be Times N um2 of the handover operation that system handling capacity is improved is 8；Second acquisition device 3 is obtained and is gulped down The amount of telling change information Info1, the Info1 indicate that the handover operation on the switching direction causes Throughput of system is improved；Then, statistic device executes operation and Num2 is updated to 9；One section After time, the second acquisition device 3 executes operation again, obtains handling capacity change information Info2, The Info2 indicates that the handover operation on the switching direction causes throughput of system to reduce；Connect , statistic device executes operation and Num1 is updated to 5.
2) it is spaced at predetermined time intervals, statistic device just executes operation to be come according to the scheduled time At least one handling capacity change information corresponding with the switching direction obtained in interval, The throughput statistics information corresponding with the switching direction to obtain (or renewal).
As an example of this implementation, and the switching direction based on TM3 to TM8, Times N um1 of the handover operation for causing throughput of system reduction of current statistic is 4 so that Times N um2 of the handover operation that throughput of system is improved is 8；Interior at preset time intervals Two acquisition devices 3 obtain corresponding with the switching direction handling up by operation is performed a plurality of times Amount change information Info1 and Info2, wherein, Info1 indicates cutting on the switching direction Changing operation causes throughput of system to improve, and the Info2 indicates the switching on the switching direction Operation causes throughput of system to reduce, then statistic device is according to Info1 and Info2, by Num1 5 are updated to, and Num2 is updated to 9.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any for from described current Transmission mode to the switching direction of the object transmission pattern, base station according to currently acquired with At least one corresponding handling capacity change information of the switching direction, obtains and the switching side To the implementation of corresponding throughput statistics information, the scope of the present invention is should be included in Interior.
As a kind of scheme being more highly preferred to of the preferred version, the transmission mode of the present embodiment Switching device also includes adjusting apparatus (not shown).
When predetermined regularization condition is met according to throughput statistics information determination, the tune of base station Engagement positions adjust the predetermined switching condition.
Wherein, the predetermined regularization condition includes any predetermined bar for triggering adjustment operation Part.Preferably, the predetermined regularization condition is included but is not limited to：
1) on a switching direction, so that throughput of system is reduced switching The number of times of operation is greater than or equal to the first frequency threshold value, or so that throughput of system is improved The number of times of handover operation is less than or equal to the second frequency threshold value.
2) on a switching direction, so that throughput of system is reduced switching Operation accounts for the ratio of whole handover operations more than or equal to the first predetermined ratio, or so that it is The ratio that the handover operation that system handling capacity is improved accounts for whole handover operations is pre- less than or equal to second Certainty ratio.
It should be noted that above-mentioned predetermined regularization condition is only for example, those skilled in the art should It is understood that any predetermined condition for triggering adjustment operation should be included in institute of the present invention In the range of the predetermined regularization condition that states.
Wherein, adjusting apparatus can judge whether full in a number of situations according to throughput statistics information The predetermined regularization condition of foot.For example, when from the off, based on whole performed by switching direction When the number of times of handover operation reaches total degree threshold value, adjusting apparatus are according to currently on switching direction Throughput statistics information judge whether to meet predetermined regularization condition；Again for example, whenever in switching Throughput statistics information on direction changes, and adjusting apparatus are just united according to current handling capacity Meter information judges whether to meet predetermined regularization condition.
Used as a kind of preferred version of adjusting apparatus, the predetermined switching condition includes and switching ginseng The corresponding predetermined threshold of number, the adjusting apparatus further include the first sub- adjusting apparatus (figure Do not show)：When predetermined regularization condition is met according to throughput statistics information determination, first Sub- adjusting apparatus are adjusted described predetermined according to the predetermined adjusted value corresponding with the handoff parameter Threshold value.
It should be noted that can be arranged using various ways corresponding with handoff parameter initial pre- Determine threshold value, such as base station sets at random, rule of thumb set by operating personnel.
Wherein, the predetermined adjusted value is the adjustment for handoff parameter set in advance in base station Amplitude.It should be noted that a handoff parameter can correspond at least one predetermined adjusted value；Example Such as, the predetermined adjusted value corresponding with handoff parameter SINR is fixed as 1db；Again for example, pin To handoff parameter SINR, work as SINR<During 10db, its corresponding predetermined adjusted value is 2db, Work as SINR>During=10db, its corresponding predetermined adjusted value is 1db；Again for example, R1 represent from Starting point starts on the switching direction of TM3 to TM8, so that throughput of system is reduced switching behaviour The ratio of whole handover operations is accounted for, works as R1<When 0.2, corresponding with handoff parameter SINR pre- Adjusted value is determined for 1db, work as R1>When=0.2, predetermined adjustment corresponding with handoff parameter SINR It is worth for 2db.It should be noted that corresponding with handoff parameter making a reservation for can be arranged using multiple Adjusted value, such as random setting, rule of thumb setting etc..
Specifically, when predetermined regularization condition is met according to throughput statistics information determination, , according to the predetermined adjusted value corresponding with the handoff parameter, adjustment is described for first sub- adjusting apparatus The implementation of predetermined threshold is included but is not limited to：
1) handoff parameter is only corresponded to and corresponds to a predetermined adjusted value, when according to handling capacity system When the determination of meter information meets predetermined regularization condition, the first sub- adjusting apparatus are according to the predetermined adjustment Value, increases or decreases the predetermined threshold corresponding with handoff parameter.
Used as an example, current predetermined switching condition is indicated：If current transmission mode is TM3, then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mould Formula TM3 switches to object transmission pattern TM8；Predetermined regularization condition is：From the off, The number of times of on the switching direction of TM3 to TM8, so that throughput of system is reduced handover operation Greater than or equal to the first frequency threshold value C1；It is pre- when this is met according to the determination of throughput statistics information Set the tone shelf-regulating Conditions when, the first sub- adjusting apparatus according to predetermined adjusted value T2, by predetermined threshold T1 It is adjusted to T1-T2.
As another example, currently predetermined switching condition instruction：If current transmission mode is TM8, then when SINR is more than predetermined threshold T1 and during parameter pmiRIreport=false, from working as Front transmission mode TM8 switches to object transmission pattern TM3；Predetermined regularization condition is：From Point starts, on the switching direction of TM8 to TM3, so that throughput of system is reduced switching behaviour The number of times of work is greater than or equal to the first frequency threshold value C2；When according to the determination of throughput statistics information When meeting the predetermined regularization condition, the first sub- adjusting apparatus, will be pre- according to predetermined adjusted value T2 Determine threshold value T1 and be adjusted to T1+T2.
2) handoff parameter corresponds to multiple predetermined adjusted values, and the first sub- adjusting apparatus are further included Second sub- adjusting apparatus (not shown).Meet in advance when being determined according to the throughput statistics information Set the tone shelf-regulating Conditions when, the second sub- adjusting apparatus according to the throughput statistics information and with described The corresponding predetermined adjusted value of handoff parameter, adjusts the predetermined threshold.
Used as an example, current predetermined switching condition is indicated：If current transmission mode is TM3, then when handoff parameter SINR is less than or equal to predetermined threshold T1, from current transmission mould Formula TM3 switches to object transmission pattern TM8；R1 represents from the off in TM3 to TM8 Switching direction on cause the handover operation that throughput of system reduces to account for the ratio of whole handover operations Example, works as R1<When 0.2, predetermined adjusted value corresponding with handoff parameter SINR is 1db, when R1>When=0.2, predetermined adjusted value corresponding with handoff parameter SINR is 2db；When basis exists Throughput statistics information determination on the switching direction of TM3 to TM8 meets predetermined regularization condition When, the second sub- adjusting apparatus determine R1=0.15 according to the throughput statistics information, then the second son Adjusting apparatus are determined using predetermined adjusted value 1db, and predetermined threshold T1 is adjusted to T1-1.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any ought handle up according to described When amount statistical information determination meets predetermined regularization condition, according to corresponding with the handoff parameter Predetermined adjusted value, adjusts the implementation of the predetermined threshold, should be included in the model of the present invention In enclosing.
It should be noted that adjusting apparatus can be performed a plurality of times operation, so that adjusted based on final Handover operation performed by the whole predetermined switching condition for obtaining, can cause throughput of system optimum.
It should be noted that the example above is only, and technical scheme is better described, and Non- limitation of the present invention, it should be appreciated by those skilled in the art that any ought handle up according to described When amount statistical information determination meets predetermined regularization condition, the realization of the predetermined switching condition is adjusted Mode, should be included in the scope of the present invention.
According to the scheme of the present embodiment, base station can pass through during switching transmission mode The first indication information for obtaining before the handover and the second indication information is obtained after switching, obtain The handling capacity change information corresponding with handover operation, so as to obtain this handover operation exactly The change of caused throughput of system；Can be according to corresponding with switching direction at least one Handling capacity change information, statistics obtain the throughput statistics information on the switching direction, so as to unite Throughput of system caused by the performed handover operation under current predetermined switching condition of meter Situation of change；Current making a reservation for can be adaptively adjusted according to throughput statistics information Switching condition, so as to as handover operation optimizes downlink system handling capacity, can meet operator and wish Hope all or specific part handover operation causes the situation of throughput of system raising；Without the need for scene behaviour Make personnel the corresponding predetermined threshold of handoff parameter, energy is manually set or adjust for each cell Be adaptively adjusted predetermined threshold corresponding with handoff parameter, so as to greatly save manpower and when Between resource, also, be based on predetermined adjusted value corresponding with handoff parameter, gradually can adjust Predetermined threshold, to obtain the predetermined threshold of the optimum corresponding with handoff parameter, so as to cutting Change operation optimization downlink system handling capacity；Scheme is simply easily realized, and without the need in base station and user Equipment room introduces new signaling or time delay, does not interfere with base station and user equipment is executed and normally cut Change operation, it is only necessary to which very simple modification is carried out in the existing scheduling scheme of base station side just can be adaptive The predetermined switching condition of ground adjustment is answered, optimizes throughput of system；The scheme of the present embodiment can be fitted For multiple beamforming systems, such as SU-MIMO, MU-MIMO, CoMP etc..
It should be noted that the present invention can be by reality in the assembly of software and/or software with hardware Apply, for example, each device of the present invention can using special IC (ASIC) or any its He is similar to hardware device to realize.In one embodiment, the software program of the present invention can lead to Computing device is crossed to realize steps described above or function.Similarly, the software journey of the present invention Sequence (including related data structure) can be stored in computer readable recording medium storing program for performing, example Such as, RAM memory, magnetically or optically driver or floppy disc and similar devices.In addition, this Some bright steps or function can employ hardware to realize, for example, as with processor coordinate from And execute the circuit of each step or function.
It is obvious to a person skilled in the art that the invention is not restricted to above-mentioned one exemplary embodiment Details, and without departing from the spirit or essential characteristics of the present invention, can be with which His concrete form realizes the present invention.Therefore, no matter from the point of view of which point, all should be by embodiment Regard exemplary as, and be nonrestrictive, the scope of the present invention is by claims Rather than described above limit, it is intended that by fall claim equivalency implication and In the range of all changes be included in the present invention.Should not be by any accompanying drawing mark in claim Note is considered as the claim involved by limiting.Furthermore, it is to be understood that " an including " word is not excluded for other lists Unit or step, odd number are not excluded for plural number.The multiple units that states in system claims or device Can also be realized by software or hardware by a unit or device.The first, the second grade word Pragmatic is representing title, and is not offered as any specific order.

Claims (12)

1. a kind of in mimo systems switch downlink transfer pattern method, wherein, the party Method is comprised the following steps：
A. when determining that handoff parameter meets predetermined switching bar according to the current transmission mode of user equipment During part, first indication information corresponding with the current transmission mode is obtained；
B. object transmission pattern is switched to from the current transmission mode, and obtain and target biography The second corresponding indication information of defeated pattern；
C. according to first indication information and second indication information, obtain and this switching behaviour Make corresponding handling capacity change information.
2. method according to claim 1, wherein, the method also includes：
For from the current transmission mode to the switching direction of the object transmission pattern, according to working as The front acquired at least one handling capacity change information corresponding with the switching direction, obtain with The corresponding throughput statistics information of the switching direction.
3. method according to claim 2, wherein, the throughput statistics information include with Descend at least one：
- from the off, number of times based on the whole handover operations performed by the switching direction；
- in whole handover operations so that the handover operation that throughput of system reduces or improves Number of times；
- in whole handover operations so that the handover operation that throughput of system reduces or improves Account for the ratio of whole handover operations.
4. according to the method in claim 2 or 3, wherein, the method also includes：
When predetermined regularization condition is met according to throughput statistics information determination, adjust described pre- Determine switching condition.
5. method according to claim 4, wherein, the predetermined switching condition includes and institute The corresponding predetermined threshold of handoff parameter is stated, described full when being determined according to the throughput statistics information Foot predetermined regularization condition when, adjust the predetermined switching condition the step of include：
When according to the throughput statistics information determine meet predetermined regularization condition when, according to described The corresponding predetermined adjusted value of handoff parameter, adjusts the predetermined threshold.
6. method according to claim 5, wherein, described when according to the throughput statistics When information determination meets predetermined regularization condition, according to the predetermined adjustment corresponding with the handoff parameter Value, adjust the predetermined threshold the step of include：
When predetermined regularization condition is met according to throughput statistics information determination, gulped down according to described The amount of telling statistical information and the predetermined adjusted value corresponding with the handoff parameter, adjust described predetermined Threshold value.
7. a kind of in mimo systems switch downlink transfer pattern device, wherein, the dress Put including following device：
First obtains device, determines handoff parameter for working as based on the current transmission mode of user equipment When meeting predetermined switching condition, the first index letter corresponding with the current transmission mode is obtained Breath；
Switching device, for switching to object transmission pattern from the current transmission mode, and obtains Second indication information corresponding with the object transmission pattern；
Second obtains device, for according to first indication information and second indication information, Obtain the handling capacity change information corresponding with this handover operation.
8. device according to claim 7, wherein, the device also includes：
Statistic device, for for cutting from the current transmission mode to the object transmission pattern Direction is changed, is handled up quantitative change according to currently acquired corresponding with the switching direction at least one Change information, obtains the throughput statistics information corresponding with the switching direction.
9. device according to claim 8, wherein, the throughput statistics information include with Descend at least one：
- from the off, number of times based on the whole handover operations performed by the switching direction；
- in whole handover operations so that the handover operation that throughput of system reduces or improves Number of times；
- in whole handover operations so that the handover operation that throughput of system reduces or improves Account for the ratio of whole handover operations.
10. device according to claim 8 or claim 9, wherein, the device also includes：
Adjusting apparatus, meet predetermined regularization condition for working as according to throughput statistics information determination When, adjust the predetermined switching condition.
11. devices according to claim 10, wherein, the predetermined switching condition include with The corresponding predetermined threshold of the handoff parameter, the adjusting apparatus include：
According to the throughput statistics information, first sub- adjusting apparatus, determine that satisfaction is seted the tone in advance for working as During shelf-regulating Conditions, according to the predetermined adjusted value corresponding with the handoff parameter, the predetermined threshold is adjusted Value.
12. devices according to claim 11, wherein, the first sub- adjusting apparatus include：
According to the throughput statistics information, second sub- adjusting apparatus, determine that satisfaction is seted the tone in advance for working as During shelf-regulating Conditions, according to the throughput statistics information and corresponding with the handoff parameter predetermined Adjusted value, adjusts the predetermined threshold.
CN201510535938.8A 2015-08-27 2015-08-27 A kind of method and apparatus for switching downlink transfer pattern in mimo systems Pending CN106487431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510535938.8A CN106487431A (en) 2015-08-27 2015-08-27 A kind of method and apparatus for switching downlink transfer pattern in mimo systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510535938.8A CN106487431A (en) 2015-08-27 2015-08-27 A kind of method and apparatus for switching downlink transfer pattern in mimo systems

Publications (1)

Publication Number Publication Date
CN106487431A true CN106487431A (en) 2017-03-08

Family

ID=58233349

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510535938.8A Pending CN106487431A (en) 2015-08-27 2015-08-27 A kind of method and apparatus for switching downlink transfer pattern in mimo systems

Country Status (1)

Country Link
CN (1) CN106487431A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019223001A1 (en) * 2018-05-25 2019-11-28 Telefonaktiebolaget Lm Ericsson (Publ) Managing a massive multiple input multiple output base station

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101365229A (en) * 2007-08-08 2009-02-11 中兴通讯股份有限公司 Adaptive method for switching between single flow mode and double flow mode
WO2010151373A1 (en) * 2009-06-26 2010-12-29 Intel Corporation Apparatus, systems and methods for switching mimo tranmission techniques in wireless communication systems
CN102638294A (en) * 2012-05-02 2012-08-15 大唐移动通信设备有限公司 Switching method and switching system of transmission mode in downlink multi-input and multi-output mode
CN102970717A (en) * 2012-11-27 2013-03-13 北京北方烽火科技有限公司 Method and device for switching different downlink transmission modes of LTE (long term evolution) system
CN104079367A (en) * 2013-03-25 2014-10-01 中国移动通信集团公司 Transmission mode switching method and device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101365229A (en) * 2007-08-08 2009-02-11 中兴通讯股份有限公司 Adaptive method for switching between single flow mode and double flow mode
WO2010151373A1 (en) * 2009-06-26 2010-12-29 Intel Corporation Apparatus, systems and methods for switching mimo tranmission techniques in wireless communication systems
CN102638294A (en) * 2012-05-02 2012-08-15 大唐移动通信设备有限公司 Switching method and switching system of transmission mode in downlink multi-input and multi-output mode
CN102970717A (en) * 2012-11-27 2013-03-13 北京北方烽火科技有限公司 Method and device for switching different downlink transmission modes of LTE (long term evolution) system
CN104079367A (en) * 2013-03-25 2014-10-01 中国移动通信集团公司 Transmission mode switching method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019223001A1 (en) * 2018-05-25 2019-11-28 Telefonaktiebolaget Lm Ericsson (Publ) Managing a massive multiple input multiple output base station
US11323928B2 (en) 2018-05-25 2022-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Managing a massive multiple input multiple output base station

Similar Documents

Publication Publication Date Title
RU2619201C2 (en) Method, apparatus and system of uplink rank adaptation
EP2944032B1 (en) Adaptive use of receiver diversity
CN111132322B (en) Antenna panel determination method, user terminal and computer-readable storage medium
US9949287B2 (en) Downlink transmission method in heterogeneous network, control device, base station and heterogeneous system
CN104486042A (en) Method and system for switching multi-input and multi-output modes of LTE system
EP2941039B1 (en) Method for selecting a working remote radio unit for a user equipment by a base station
WO2011053204A1 (en) A radio base station and a method of selecting a channel quality reporting mode
CN107302414B (en) Transmission mode self-adaptive switching method and device
CN110944350B (en) Congestion control coefficient acquisition method, user terminal and computer readable storage medium
CN106559167B (en) A kind of method and device of link circuit self-adapting
CN111417133A (en) Interference measurement method and device
EP3024154A1 (en) Method, apparatus and system for selecting precoding matrix indicator
CN102300326A (en) Scheduling method of multi-user multi-input multi-output (MIMO) communication system and base station
CN106559165A (en) A kind of method and apparatus of feeding back channel state information
CN106470056B (en) Determine the method and apparatus for switching SINR threshold value when occurring between MIMO mode
CN106487431A (en) A kind of method and apparatus for switching downlink transfer pattern in mimo systems
EP3163963B1 (en) Method for improving network performance, user equipment and storage medium
CN107006019A (en) A kind of data transmission method and device
CN103701512B (en) Method and device for determining downlink beam forming weight vector
CN106507461B (en) Power adjustment method and device in uplink multi-user system
CN115276908B (en) Wireless communication method, device and storage medium
US9807787B2 (en) Method for performing uplink transmission control of an electronic device, and associated apparatus
CN106487475B (en) CQI acquisition methods and device
CN106411474B (en) Channel RI acquisition methods and device
CN114765483A (en) Method, device and terminal for reporting channel state information

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 201206 ningqiao Road, Shanghai free trade test area, No. 388

Applicant after: Shanghai NOKIA Baer Limited by Share Ltd

Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388

Applicant before: Shanghai Alcatel-Lucent Co., Ltd.

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170308