CN103684555B - The MIMO mode switching method inside of a kind of up channel and device - Google Patents
The MIMO mode switching method inside of a kind of up channel and device Download PDFInfo
- Publication number
- CN103684555B CN103684555B CN201310674428.XA CN201310674428A CN103684555B CN 103684555 B CN103684555 B CN 103684555B CN 201310674428 A CN201310674428 A CN 201310674428A CN 103684555 B CN103684555 B CN 103684555B
- Authority
- CN
- China
- Prior art keywords
- spectrum efficiency
- channel
- main
- scheduling metrics
- value
- 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.)
- Active
Links
Abstract
The embodiment of the invention discloses MIMO mode switching method inside and the device of a kind of up channel, including: obtain the order instruction RI reported；Obtain the modulation coding mode MCS under the current RI of up channel and calculate the spectrum efficiency that up channel is current；During as being currently MU MIMO mode, current spectral efficiency less than the spectrum efficiency corresponding when the value of RI is equal to 1, then switches to SU MIMO mode to carry out data transmission；During as being currently SU MIMO mode, if the value that current spectral efficiency is more than the spectrum efficiency corresponding when the value of RI is equal to 1 and current RI is more than or equal to 1.5, MU MIMO mode is then switched to carry out data transmission, visible, MCS according to Real-time Collection up channel calculates the spectrum efficiency of correspondence, the mode of this acquisition spectrum efficiency is more accurate, and also can adjust the result of calculation of spectrum efficiency according to the value correspondence of the MCS under actual working environment.
Description
Technical field
The present invention relates to communication field, particularly relate to switching side in the MIMO mode of a kind of up channel
Method and device.
Background technology
At present, advanced long-term evolution system (Long Term Evolution-Advanced, LTE-A) exists
The data transmission of up channel is upper use more Multiple Input Multiple Output (Multiple-Input Multiple-Output,
MIMO) technical support, MIMO technology is to apply multiple antennas in base station and terminal simultaneously, need not
On the premise of additional bandwidth, improve the peak rate of single user, thus increase power system capacity further,
Improve frequency spectrum speed.
MIMO technology is divided into single user MIMO mode (Single User-Multiple-Input at present
Multiple-Output, SU-MIMO) and multi-user's MIMO mode (Multi User-Multiple-Input
Multiple-Output, MU-MIMO), typically can be according to work in the application of the up channel of LTE-A
The change making parameter switches in SU-MIMO and MU-MIMO pattern.Cut for determining when
Changing most important in the parameter of MIMO mode is exactly the spectrum efficiency of subscriber equipment.
In prior art, the numerical value of the spectrum efficiency of subscriber equipment typically all uses estimation, or passes through
Experience carries out assignment and obtains, and it is current that this makes to calculate the switching of what moment in use spectrum efficiency
During MIMO mode, precision is the highest, and cannot carry out the tune of correspondence according to the change of current duty
Whole.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides the MIMO mode inscribe of a kind of up channel
Change method and apparatus, change the acquisition mode of spectrum efficiency, improve switching precision.
The embodiment of the invention discloses following technical scheme:
The MIMO mode switching method inside of a kind of up channel, advanced long-term evolution system LTE-A's
Single user MIMO mode SU-MIMO and multi-user MIMO mode are used alternatingly in up channel
MU-MIMO carries out data transmission, including:
Obtain the order instruction RI reported；
Obtain the modulation coding mode MCS under the current RI of up channel；
Table look-up according to described MCS and obtain the bit number of each transport block transmission；
The spectrum efficiency that up channel is current is calculated according to described number of bits；
When using MU-MIMO pattern such as current up channel, if current spectral efficiency is less than working as RI
Value equal to 1 time corresponding spectrum efficiency, then switch to SU-MIMO pattern number at up channel
According to transmission；
When using SU-MIMO pattern such as current up channel, if current spectral efficiency is more than when RI's
When the value of spectrum efficiency corresponding when value is equal to 1 and current RI is more than or equal to 1.5, then cut at up channel
It is changed to MU-MIMO pattern carry out data transmission.
Preferably, when up channel carries out data transmission, also include:
Obtain primary user device UE；
Service bearer ability according to subband spectrum efficiency and main UE, calculates the scheduling metrics value of main UE；
It is that described main UE distributes data resource according to described scheduling metrics value.
Preferably, the described service bearer ability according to subband spectrum efficiency and main UE, calculate main UE's
Scheduling metrics value, specifically includes:
Service bearer ability according to subband spectrum efficiency and main UE uses max carrier to interference algorithm MaxC/I
Calculate scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Preferably, the described service bearer ability according to subband spectrum efficiency and main UE, calculate main UE's
Scheduling metrics value, specifically includes:
Service bearer ability according to subband spectrum efficiency and main UE uses proportional fair algorithm PF to calculate and adjusts
Degree metric；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It is that main UE is with the service bearer amount realized.
Preferably, described is that described main UE distributes data resource according to described scheduling metrics value, specifically includes:
Obtain each main UE scheduling metrics value corresponding to a free physical Resource Block PRB；
Described idle PRB is distributed to the master of the scheduling metrics value maximum of corresponding described free physical Resource Block
UE。
Switching device in the MIMO mode of a kind of up channel, advanced long-term evolution system LTE-A's
Single user MIMO mode SU-MIMO and multi-user MIMO mode are used alternatingly in up channel
MU-MIMO carries out data transmission, including:
Obtain RI unit, for obtaining the order instruction RI reported；
Obtain MCS unit, for obtaining the modulation coding mode MCS under the current RI of up channel；
Determine bit number unit, obtain the bit number of each transport block transmission for tabling look-up according to described MCS；
Determine spectrum efficiency unit, for calculating, according to described number of bits, the frequency spectrum effect that up channel is current
Rate；
First data transmission unit, during for using MU-MIMO pattern such as current up channel, if
Described determine current spectral efficiency determined by spectrum efficiency unit less than when RI value equal to 1 time corresponding
Spectrum efficiency, switches to SU-MIMO pattern to carry out data transmission at up channel；
Second data transmission unit, during for using SU-MIMO pattern such as current up channel, if
Described determine current spectral efficiency determined by spectrum efficiency unit more than when RI value equal to 1 time corresponding
When the value of spectrum efficiency and current RI is more than or equal to 1.5, switch to MU-MIMO pattern at up channel
Carry out data transmission.
Preferably, described first data transmission unit and the second data transmission unit, also include:
Obtain UE unit, be used for obtaining primary user device UE；
Calculate scheduling metrics value cell, for the service bearer ability according to subband spectrum efficiency and main UE,
Calculate the scheduling metrics value of main UE；
Data resource allocation unit, being used for according to described scheduling metrics value is described main UE distribution data money
Source.
Preferably, described calculating scheduling metrics value cell, specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses max carrier to interference algorithm MaxC/I
Calculate scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Preferably, described calculating scheduling metrics value cell, specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses proportional fair algorithm PF to calculate and adjusts
Degree metric；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It is that main UE is with the service bearer amount realized.
Preferably, described data resource allocation unit, specifically include:
Obtain scheduling metrics value subelement, be used for obtaining each main UE corresponding to a free physical Resource Block
The scheduling metrics value of PRB；
Idle PRB distributes subelement, for described idle PRB is distributed to corresponding described free physical money
The main UE that the scheduling metrics value of source block is maximum.
By technique scheme it can be seen that calculate correspondence according to the MCS of Real-time Collection up channel
Spectrum efficiency, the mode of this acquisition spectrum efficiency is more accurate, and also can be according to actual work
The value correspondence of the MCS under environment adjusts the result of calculation of spectrum efficiency, so that according to by this side
The spectrum efficiency that formula obtains determine the time point of switching MIMO mode more accurately and also can be along with working as
The change of the value of the MCS under in front working environment and the adjustment of correspondence.
Accompanying drawing explanation
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 reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method flow diagram of the MIMO mode switching method inside of a kind of up channel of the present invention；
Fig. 2 is switching schematic diagram in MIMO mode of the present invention；
Fig. 3 is the method flow diagram that the present invention calculates UE scheduling metrics value；
Fig. 4 is the method flow diagram of resource of the present invention distribution；
Fig. 5 be a kind of up channel of the present invention MIMO mode in one of the structure drawing of device of switching device；
Fig. 6 be a kind of up channel of the present invention MIMO mode in switching device structure drawing of device two；
Fig. 7 be a kind of up channel of the present invention MIMO mode in switching device structure drawing of device three.
Detailed description of the invention
Embodiments provide MIMO mode switching method inside and the device of a kind of up channel.First
First, need the uplink scheduling of lte-a system is illustrated, at the up channel of lte-a system
In uplink scheduling, domain scheduling and frequency domain dispatching when being broadly divided into, time domain scheduling be mainly in the suitable time
The MIMO mode used in some switching up channel, such as changes to from SU-MIMO intra-mode
When MU-MIMO pattern or change to SU-MIMO pattern from MU-MIMO intra-mode, carried out
Switching mainly relies on the numerical values recited of the spectrum efficiency by up channel and received order to indicate
The numerical value of (Rank Indicator, RI), and the most accurately, can be relevant to current operating environment parameter
Acquisition spectrum efficiency technical scheme just, according to the modulating-coding of Real-time Collection up channel
Mode (Modulation and Coding Scheme, MCS) calculates the spectrum efficiency of correspondence, this
The mode obtaining spectrum efficiency is more accurate, and also can be according to the MCS's under actual working environment
Value correspondence adjusts the result of calculation of spectrum efficiency, so that according to the frequency spectrum effect obtained in this way
Rate calculate the time point of switching MIMO mode more accurately and also can be along with under in current operating environment
The change of value of MCS and the adjustment of correspondence.
After determining current MIMO mode, calculate subscriber equipment by rational calculation
The scheduling metrics value of (User equipment, UE), and carry out frequency domain dispatching with this metric, complete sky
The distribution of not busy Physical Resource Block (Physical Resource Block, PRB).One technical side of the present invention
Case all can produce impact in view of service bearer amount and the subband spectrum efficiency of UE to scheduling metric, by
This is when scheduling metrics value, using service bearer amount and subband spectrum efficiency all as calculating reference, thus carries
The accuracy of the high scheduling metrics value obtained.
Distribution idle PRB when, need to calculate each UE and correspond to the scheduling on an idle PRB
Metric, and this free time PRB distributed to should the free time with the preferential principle of maximum scheduling metrics value
The UE that PRB scheduling metrics value is maximum, it is seen then that the calculating of scheduling metrics value is the most accurately to the distribution free time
The accuracy of PRB also has a directly impact, thus improve obtain the precision of scheduling metrics value be equivalent to into
One step improves the accuracy of distribution PRB.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The embodiment of the present invention is described in detail.
Embodiment one
Referring to Fig. 1, it is the method for MIMO mode switching method inside of a kind of up channel of the present invention
Flow chart, the method is applied to list is used alternatingly in the up channel of advanced long-term evolution system LTE-A
User MIMO mode SU-MIMO and multi-user MIMO mode MU-MIMO carries out data biography
In the case of defeated, comprise the following steps:
S101: obtain the order instruction RI reported；
S102: obtain the modulation coding mode MCS under the current RI of up channel；
It is typically based on Signal to Interference plus Noise Ratio (the Signal to Interference plus of the current up channel collected
Noise Ratio, sinr) calculate the up modulation coding mode obtaining correspondence, the method for acquisition belongs to existing
Technology, repeats no more here.
S103: table look-up according to described MCS and obtain the bit number of each transport block transmission；
S104: calculate the spectrum efficiency that up channel is current according to described number of bits；
It is to say, the spectrum efficiency determined can according to the change of current MCS respective change, and
This will not adjust accordingly according to the change of current operating parameters as a fixing value of the prior art
The mode of whole spectrum efficiency substantially increases the adaptability of technical solution of the present invention.
S105: when using MU-MIMO pattern such as current up channel, if current spectral efficiency is less than
The spectrum efficiency corresponding when the value of RI is equal to 1, switches to SU-MIMO pattern to carry out at up channel
Data are transmitted；
SU-MIMO pattern specifically refers to lte-a system will support that up channel uses 2 or 4
Launch the configuration of antenna.
S106: when using SU-MIMO pattern such as current up channel, if current spectral efficiency is more than
When the value of the spectrum efficiency corresponding when the value of RI is equal to 1 and current RI is more than or equal to 1.5, at up letter
Road switches to MU-MIMO pattern to carry out data transmission.
And in the transmission of MU-MIMO pattern, lte-a system by time identical/many numbers in resource frequently
The transmission being sent between different users, i.e. multi-user according to stream is the most independent, and can share
Identical up time/resource frequently, the user that two single antenna send is entered by base station according to the characteristic of space channel
Row pairing, assigns it in identical frequency resource, improves by transmitting data for multiple users simultaneously
Power system capacity.At this moment terminal is as transmitting terminal, and lte-a system is as receiving terminal.In lte-a system,
Uplink transmission mode 2 supports the single user transmission of most two streams, therefore can realize single user and spread more
The defeated switching at runtime with multi-user transmission.
As long as it is to say, when the value of RI is equal to 2, if current spectral efficiency is less than when the value of RI
Spectrum efficiency corresponding during equal to 1, if up channel currently used be SU-MIMO pattern, then
Keep, if currently used is MU-MIMO pattern, be then switched to SU-MIMO pattern.In like manner,
As long as when the value of RI is equal to 1, if current spectral efficiency is corresponding more than when the value of RI is equal to 1
Spectrum efficiency, then keep or be switched to MU-MIMO pattern.Certainly, determine to use a certain MIMO
The condition of pattern, in addition to RI needs to meet certain numerical value, also has some other Rule of judgment, but
It is owing to being not related to the claimed technical scheme of the present invention, therefore is only described briefly following, such as Fig. 2
Shown in.
MU-MIMO pattern (dicode word) is switched to the condition of SU-MIMO pattern (single codeword): (1)
Dicode word forbid that timer cuts out (2) if the spectrum efficiency of RI≤1.4 or dicode word is less than solid size
The spectrum efficiency (3) of word if condition (2) meets, then arranges dicode word and is switched to the punishment of single codeword
The time of timer, if punishment timer open during this period of time in all meet (2) condition, then send out
Raw switching, is switched to single codeword from dicode word.After switching complete, open single codeword forbid timer,
Do not allow to switch again in single codeword forbids the time that timer is opened.
SU-MIMO pattern (single codeword) is switched to the condition of MU-MIMO pattern (dicode word): (1)
Single codeword forbid timer close (2) if RI >=1.5 and the spectrum efficiency of single codeword less than dicode
The spectrum efficiency of word, (3) if condition (2) meets, then arrange single codeword and are switched to the punishment of dicode word
The time of timer, if punishment timer open during this period of time in all meet (2) condition, then send out
Raw switching, is switched to dicode word from single codeword.After switching complete, open dicode word forbid timer,
Do not allow to switch again in the time that timer is opened forbidden in dicode word.
Up channel in lte-a system is using SU-MIMO pattern or MU-MIMO pattern to enter
During the transmission of row data, need to calculate further the scheduling metrics value of the UE participating in data transmission, in order to
Carry out entering during frequency domain dispatching the distribution of PRB.Calculate the flow process of scheduling metrics value of UE as shown in Figure 3:
S301: obtain primary user device UE；
S302: according to the service bearer ability of subband spectrum efficiency and main UE, calculate the scheduling degree of main UE
Value；
Here spectrum efficiency determined by subband spectrum efficiency and step S104 has certain proportion and closes
System is the most relevant with the number of subband.
S303: according to described scheduling metrics value be described main UE distribute data resource.
For step S302 it should be noted that the method calculating the scheduling metrics value of UE has multiple, but
It is prior art not to have any calculation both in view of the service bearer ability of UE, it is also considered that to upper
The spectrum efficiency of row channel, below, will be mainly for technical solution of the present invention to max carrier to interference algorithm
The improvement of MaxC/I and proportional fair algorithm PF illustrates:
Use the max carrier to interference algorithm MaxC/I after improving, according to subband spectrum efficiency and the industry of main UE
Business bearing capacity calculates scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Use the proportional fair algorithm PF after improving, according to subband spectrum efficiency and the service bearer of main UE
Capacity calculation scheduling metrics value；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It is that main UE is with the service bearer amount realized.
Visible, it is contemplated that scheduling metric all can be produced by service bearer amount and the subband spectrum efficiency of UE
Impact, thus when scheduling metrics value, using service bearer amount and subband spectrum efficiency all as calculating reference,
Improve existing max carrier to interference algorithm MaxC/I or proportional fair algorithm PF, which thereby enhance acquisition
The accuracy of scheduling metrics value.
For step S303 it should be noted that up channel from time after domain scheduling proceeds to frequency domain dispatching,
To proceed by the resource distribution of PRB, and the Main Basis carrying out resource distribution be exactly each UE for
The size of the scheduling metrics value of one idle PRB, and the scheduling metrics value of each UE is exactly based on step
Acquired in calculation after improving in S302.The calculating of scheduling metrics value is the most accurately to the distribution free time
The accuracy of PRB also has a directly impact, thus improve obtain the precision of scheduling metrics value be equivalent to into
One step improves the accuracy of distribution PRB.Concrete allocation flow is as shown in Figure 4:
S401: obtain each main UE scheduling metrics value corresponding to a free physical Resource Block PRB；
S402: described free physical resource block assignments is given the scheduling metrics value maximum of corresponding described PRB
Main UE.
Actual also need to consider some other factors when carrying out resource distribution, owing to not being the technology of the present invention
Involved by scheme, therefore will simply the process of concrete distribution PRB be described below.
When carrying out resource distribution, need first to control channel element (Control Channel to UE distribution
Element, CCE), distribution CCE is failed for fruit, and this UE is just under MU-MIMO pattern,
Then this UE and its pairing UE is used alone one layer of closed loop space division multiplexing and redistributes resource.Maximum scheduling
The preferential uplink resource allocating method specific embodiment of metric is: obtain available free PRB,
Available free PRB is divided into multiple subband (subband size is identical), owing to different UE are corresponding every
The spectrum efficiency of individual subband is different, therefore the corresponding scheduling metrics value at each subband of each UE is also not
With, each subband is descending according to corresponding metric, is ranked up by UE, and this subband is divided
Dispensing is to should the maximum UE of subband metric.Often group PRB may be made up of multiple subbands, then need
Calculate the summation of the scheduling metrics value of these subbands that each UE correspondence comprises in this group PRB, which
The summation of the scheduling metrics value of UE just distributes to this UE this group PRB greatly.If the PRB of two groups
Then calculate the scheduling metrics value summation of each UE corresponding for PRB of two groups, two groups of PRB degree of distributing to
The UE that value is maximum.
From the present embodiment it can be seen that calculate according to the modulation coding mode of Real-time Collection up channel right
The spectrum efficiency answered, the mode of this acquisition spectrum efficiency is more accurate, and also can be according to reality
The value correspondence of the MCS under working environment adjusts the result of calculation of spectrum efficiency, so that according to by this
The spectrum efficiency that kind of mode obtains determine the time point of switching MIMO mode more accurately and also can be with
The change of the value of MCS under in current operating environment and the adjustment of correspondence.
Embodiment two
Corresponding with the MIMO mode switching method inside of above-mentioned a kind of up channel, the embodiment of the present invention is also
Provide switching device in the MIMO mode of a kind of up channel.Referring to Fig. 5, it is the present invention one
One of structure drawing of device of switching device in the MIMO mode of kind up channel, this device includes obtaining RI
Unit 501, obtain MCS unit 502, determine bit number unit 503, determine spectrum efficiency unit 504,
First data transmission unit 505 and the second data transmission unit 506:
Obtain RI unit 501, for obtaining the order instruction RI reported；
Obtain MCS unit 502, for obtaining the modulation coding mode MCS under the current RI of up channel；
Determine bit number unit 503, obtain the ratio of each transport block transmission for tabling look-up according to described MCS
Special number；
Determine spectrum efficiency unit 504, for calculating, according to described number of bits, the frequency spectrum that up channel is current
Efficiency；
First data transmission unit 505, during for using MU-MIMO pattern such as current up channel,
Determine that current spectral efficiency determined by spectrum efficiency unit 504 is equal to 1 less than the value as RI if described
Time corresponding spectrum efficiency, switch to SU-MIMO pattern to carry out data transmission at up channel；
Second data transmission unit 506, during for using SU-MIMO pattern such as current up channel, as
The most described determine current spectral efficiency determined by spectrum efficiency unit 504 more than when RI value equal to 1 time
When the value of corresponding spectrum efficiency and current RI is more than or equal to 1.5, switch to MU-MIMO at up channel
Pattern carries out data transmission.
Preferably, described first data transmission unit and the second data transmission unit, also include:
Obtain UE unit 601, be used for obtaining primary user device UE；
Calculate scheduling metrics value cell 602, for the service bearer energy according to subband spectrum efficiency and main UE
Power, calculates the scheduling metrics value of main UE；
Data resource allocation unit 603, being used for according to described scheduling metrics value is that described main UE distributes data
Resource.
Preferably, described calculating scheduling metrics value cell 602, specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses max carrier to interference algorithm MaxC/I
Calculate scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Preferably, described calculating scheduling metrics value cell 602, specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses proportional fair algorithm PF to calculate and adjusts
Degree metric；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It is that main UE is with the service bearer amount realized.
Preferably, described data resource allocation unit 603, specifically include:
Obtain scheduling metrics value subelement 6031, be used for obtaining each main UE corresponding to a free physical money
The scheduling metrics value of source block PRB；
Idle PRB distributes subelement 6032, for described idle PRB is distributed to the corresponding described free time
The main UE that the scheduling metrics value of Physical Resource Block is maximum.
From the present embodiment it can be seen that calculate according to the modulation coding mode of Real-time Collection up channel right
The spectrum efficiency answered, the mode of this acquisition spectrum efficiency is more accurate, and also can be according to reality
The value correspondence of the MCS under working environment adjusts the result of calculation of spectrum efficiency, so that according to passing through
The spectrum efficiency that this mode obtains calculate the time point of switching MIMO mode more accurately and also can
With the change of the value along with the MCS under in current operating environment and the adjustment of correspondence.
It should be noted that one of ordinary skill in the art will appreciate that and realize in above-described embodiment method
All or part of flow process, can be by computer program and completes to instruct relevant hardware, described
Program can be stored in a computer read/write memory medium, and this program is upon execution, it may include as above-mentioned
The flow process of the embodiment of each method.Wherein, described storage medium can be magnetic disc, CD, read-only storage
Memory body (Read-Only Memory, ROM) or random store-memory body (Random Access
Memory, RAM) etc..
MIMO mode switching method inside and device to a kind of up channel provided by the present invention enter above
Having gone and be discussed in detail, principle and the embodiment of the present invention are carried out by specific embodiment used herein
Illustrating, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；With
Time, for one of ordinary skill in the art, according to the thought of the present invention, in detailed description of the invention and should
All will change with in scope, in sum, this specification content should not be construed as the present invention's
Limit.
Claims (10)
1. the MIMO mode switching method inside of a up channel, it is characterised in that drill for a long time senior
Enter to be used alternatingly in the up channel of system LTE-A single user MIMO mode SU-MIMO and multiplex
Family MIMO mode MU-MIMO carries out data transmission, including:
Obtain the order instruction RI reported；
Obtain the modulation coding mode MCS under the current RI of up channel；
Table look-up according to described MCS and obtain the bit number of each transport block transmission；
The spectrum efficiency that up channel is current is calculated according to described number of bits；
When using MU-MIMO pattern such as current up channel, if current spectral efficiency is less than working as RI
Value equal to 1 time corresponding spectrum efficiency, then switch to SU-MIMO pattern number at up channel
According to transmission；
When using SU-MIMO pattern such as current up channel, if current spectral efficiency is more than when RI's
When the value of spectrum efficiency corresponding when value is equal to 1 and current RI is more than or equal to 1.5, then cut at up channel
It is changed to MU-MIMO pattern carry out data transmission.
Method the most according to claim 1, it is characterised in that carry out data transmission at up channel
Time, also include:
Obtain primary user device UE；
Service bearer ability according to subband spectrum efficiency and main UE, calculates the scheduling metrics value of main UE；
It is that described main UE distributes data resource according to described scheduling metrics value.
Method the most according to claim 2, it is characterised in that described according to subband spectrum efficiency and
The service bearer ability of main UE, calculates the scheduling metrics value of main UE, specifically includes:
Service bearer ability according to subband spectrum efficiency and main UE uses max carrier to interference algorithm MaxC/I
Calculate scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Method the most according to claim 2, it is characterised in that described according to subband spectrum efficiency and
The service bearer ability of main UE, calculates the scheduling metrics value of main UE, specifically includes:
Service bearer ability according to subband spectrum efficiency and main UE uses proportional fair algorithm PF to calculate and adjusts
Degree metric；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It it is the service bearer amount that realized of main UE.
Method the most according to claim 2, it is characterised in that described according to described scheduling metrics value
Distribute data resource for described main UE, specifically include:
Obtain each main UE scheduling metrics value corresponding to a free physical Resource Block PRB；
Described idle PRB is distributed to the master of the scheduling metrics value maximum of corresponding described free physical Resource Block
UE。
6. switching device in the MIMO mode of a up channel, it is characterised in that drill for a long time senior
Enter to be used alternatingly in the up channel of system LTE-A single user MIMO mode SU-MIMO and multiplex
Family MIMO mode MU-MIMO carries out data transmission, including:
Obtain RI unit, for obtaining the order instruction RI reported；
Obtain MCS unit, for obtaining the modulation coding mode MCS under the current RI of up channel；
Determine bit number unit, obtain the bit number of each transport block transmission for tabling look-up according to described MCS；
Determine spectrum efficiency unit, for calculating, according to described number of bits, the frequency spectrum effect that up channel is current
Rate；
First data transmission unit, during for using MU-MIMO pattern such as current up channel, if
Described determine current spectral efficiency determined by spectrum efficiency unit less than when RI value equal to 1 time corresponding
Spectrum efficiency, switches to SU-MIMO pattern to carry out data transmission at up channel；
Second data transmission unit, during for using SU-MIMO pattern such as current up channel, if
Described determine current spectral efficiency determined by spectrum efficiency unit more than when RI value equal to 1 time corresponding
When the value of spectrum efficiency and current RI is more than or equal to 1.5, switch to MU-MIMO pattern at up channel
Carry out data transmission.
Device the most according to claim 6, it is characterised in that described first data transmission unit and
Second data transmission unit, also includes:
Obtain UE unit, be used for obtaining primary user device UE；
Calculate scheduling metrics value cell, for the service bearer ability according to subband spectrum efficiency and main UE,
Calculate the scheduling metrics value of main UE；
Data resource allocation unit, being used for according to described scheduling metrics value is described main UE distribution data money
Source.
Device the most according to claim 7, it is characterised in that described calculating scheduling metrics value cell,
Specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses max carrier to interference algorithm MaxC/I
Calculate scheduling metrics value；
Described max carrier to interference algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency.
Device the most according to claim 7, it is characterised in that described calculating scheduling metrics value cell,
Specifically for:
Service bearer ability according to subband spectrum efficiency and main UE uses proportional fair algorithm PF to calculate and adjusts
Degree metric；
Described proportional fair algorithm calculates scheduling metrics value:
wsch=wue-QoS*wsb-se/wue-th
Wherein, wue-QoSIt is the service bearer ability of main UE, wsb-seFor subband spectrum efficiency, wue-th
It it is the service bearer amount that realized of main UE.
Device the most according to claim 7, it is characterised in that described data resource allocation unit,
Specifically include:
Obtain scheduling metrics value subelement, be used for obtaining each main UE corresponding to a free physical Resource Block
The scheduling metrics value of PRB；
Idle PRB distributes subelement, for described idle PRB is distributed to corresponding described free physical money
The main UE that the scheduling metrics value of source block is maximum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674428.XA CN103684555B (en) | 2013-12-11 | 2013-12-11 | The MIMO mode switching method inside of a kind of up channel and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674428.XA CN103684555B (en) | 2013-12-11 | 2013-12-11 | The MIMO mode switching method inside of a kind of up channel and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103684555A CN103684555A (en) | 2014-03-26 |
| CN103684555B true CN103684555B (en) | 2016-09-07 |
Family
ID=50320984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310674428.XA Active CN103684555B (en) | 2013-12-11 | 2013-12-11 | The MIMO mode switching method inside of a kind of up channel and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103684555B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170222710A1 (en) * | 2016-01-28 | 2017-08-03 | Qualcomm Incorporated | Trigger frame for changing modes of operation |
| CN105873101A (en) * | 2016-03-31 | 2016-08-17 | 武汉邮电科学研究院 | Self-adaption mode switching method and system based on MCS and bler |
| CN106535262B (en) * | 2016-11-16 | 2019-11-05 | 深圳互由科技有限公司 | A kind of dynamic frequency method based on MCS value |
| CN108738158B (en) * | 2018-05-11 | 2021-07-23 | 长沙学院 | LTE downlink scheduling method based on throughput optimization |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008082857A1 (en) * | 2006-12-29 | 2008-07-10 | Intel Corporation | Wireless communications mode switching apparatus and methods |
| CN101729119A (en) * | 2008-10-15 | 2010-06-09 | 中兴通讯股份有限公司 | Adaptive switching method and system for downlink multi-input multi-output mode |
| CN102377538A (en) * | 2010-08-10 | 2012-03-14 | 中兴通讯股份有限公司 | Self-adaptive switching method and system |
| CN102497222A (en) * | 2011-12-26 | 2012-06-13 | 桂林电子科技大学 | Adaptive switching method of SU-MIMO mode and MU-MIMO mode and adaptive switching apparatus thereof |
| CN102724726A (en) * | 2012-06-12 | 2012-10-10 | 大唐移动通信设备有限公司 | Method and device for switching multiple input multiple output (MIMO) mode in transmission mode (TM8) in long-term evolution (LTE) system |
| CN102946263A (en) * | 2012-11-27 | 2013-02-27 | 北京北方烽火科技有限公司 | Different multiple input multiple output (MIMO) mode switching method and device for down-load mode of long term evolution (LTE) system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5185277B2 (en) * | 2006-10-05 | 2013-04-17 | テレフオンアクチーボラゲット エル エム エリクソン（パブル） | MIMO mode selection in handover |
-
2013
- 2013-12-11 CN CN201310674428.XA patent/CN103684555B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008082857A1 (en) * | 2006-12-29 | 2008-07-10 | Intel Corporation | Wireless communications mode switching apparatus and methods |
| CN101729119A (en) * | 2008-10-15 | 2010-06-09 | 中兴通讯股份有限公司 | Adaptive switching method and system for downlink multi-input multi-output mode |
| CN102377538A (en) * | 2010-08-10 | 2012-03-14 | 中兴通讯股份有限公司 | Self-adaptive switching method and system |
| CN102497222A (en) * | 2011-12-26 | 2012-06-13 | 桂林电子科技大学 | Adaptive switching method of SU-MIMO mode and MU-MIMO mode and adaptive switching apparatus thereof |
| CN102724726A (en) * | 2012-06-12 | 2012-10-10 | 大唐移动通信设备有限公司 | Method and device for switching multiple input multiple output (MIMO) mode in transmission mode (TM8) in long-term evolution (LTE) system |
| CN102946263A (en) * | 2012-11-27 | 2013-02-27 | 北京北方烽火科技有限公司 | Different multiple input multiple output (MIMO) mode switching method and device for down-load mode of long term evolution (LTE) system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103684555A (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108111282B (en) | Wireless communication method and device | |
| CN102461243B (en) | Uplink feedback channel reporting mechanism in wireless system | |
| CN108292943B (en) | Method and apparatus for transmitting and receiving feedback signal in wireless communication system | |
| CN102255689B (en) | A kind of processing method of channel condition information, apparatus and system | |
| JP6683378B2 (en) | Method and apparatus for transmitting and receiving reference signals | |
| CN102356580B (en) | To the configuration of the transmission of the periodic feedback information on physical uplink link shared channels (PUSCH) | |
| RU2559706C2 (en) | Method and terminal for channel state information feedback | |
| CN102201897B (en) | Channel condition information processing method, apparatus and system | |
| KR101229322B1 (en) | Interference coordination method and access network device | |
| CN102291228B (en) | Channel state information feedback and receiving methods and equipment | |
| CN101820669B (en) | Method and device for allocating PDCCH resources | |
| CN102036354B (en) | Method and device for allocating power to downlink control channel, and base station | |
| CN105743824A (en) | Method and device for interference processing and signal notification among nonorthogonal user equipment | |
| CN103391158B (en) | A kind of periodic feedback method of broad-band channel information, Apparatus and system | |
| CN105101307A (en) | Method, system and related equipment for configuring neighbor cell transmission parameters in heterogeneous networks | |
| RU2609593C2 (en) | Method and device for transmitting and receiving feedback signal in mobile communication system | |
| KR20120102845A (en) | Method and apparatus for transmitting and receiving control information in wireless coommunication system | |
| CN101677306B (en) | Method and device for configuring reference signals | |
| US8275385B2 (en) | Method and arrangement for allocating radio resources in a communication system | |
| CN103684555B (en) | The MIMO mode switching method inside of a kind of up channel and device | |
| EP2153602B1 (en) | Method for allocating resources in an OFDM network | |
| CN105992380A (en) | Base station, mobile station, and downlink scheduling method | |
| WO2014018539A1 (en) | Method and apparatus for inter-carrier load balancing | |
| WO2014008795A1 (en) | Periodic csi reporting method and terminal | |
| CN103702431B (en) | The method and apparatus of uplink scheduling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200122 Address after: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee after: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. Address before: 100085, building 1, tower 5, East Road, Haidian District, Beijing Patentee before: Beifang Fenghuo Tech Co., Ltd., Beijing |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co., Ltd Address before: 430073 Hubei province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co., Ltd |