CN106413010B - A kind of method and apparatus of the parameter for being used when determining switching transmission mode - Google Patents
A kind of method and apparatus of the parameter for being used when determining switching transmission mode Download PDFInfo
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- CN106413010B CN106413010B CN201510466405.9A CN201510466405A CN106413010B CN 106413010 B CN106413010 B CN 106413010B CN 201510466405 A CN201510466405 A CN 201510466405A CN 106413010 B CN106413010 B CN 106413010B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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Abstract
The method and apparatus of used handoff parameter when the object of the present invention is to provide a kind of for determining that eNB switches transmission mode.According to the method for the present invention the following steps are included: obtaining one group of geographical feature corresponding with the eNB indicates information, wherein one group of geographical feature instruction information includes one or more geographical feature instruction information；Information is indicated based on one group of geographical feature, to determine channel type corresponding to the eNB；The value of one or more handoff parameters corresponding with the channel type is determined, so that the eNB respective parameter value of one or more handoff parameter based on determined by is come execution pattern switching.
Description
Technical field
The present invention relates to field of computer technology, more particularly to one kind to be used to determine and be used when eNB switches transmission mode
Handoff parameter method and apparatus.
Background technique
3GPP is defined for advanced (the Long Term Evolution/Long Term of long term evolution/long term evolution-
Evolution-Advanced, LTE/LTE-A) cellular system transmission mode (Transmission Mode, TM), the transmission
Mode is made of several transmission mechanisms in downlink transfer, for example, the dual-stream beamforming in TM8 and single stream wave beam forming, and
Systemic circulation delay diversity (Cyclic Delay Diversity, CDD) in TM3.Different TM is suitable for different situations, example
Such as, in the central area of cell, TM3 usually be can provide higher than handling capacity provided by TM8 or TM9, and TM8 or TM9 can be small
Area edge provides higher handling capacity.Therefore, adaptive TM switching is used as an advanced characteristic, helps to be promoted existing
Downlink throughput capacity in LTE and lte-a system.
Several factors will affect the selection of TM, for example, Signal to Interference plus Noise Ratio (Signal to Interference
Plus Noise Ratio, SINR), the movement speed of UE, the characteristic etc. of the scattering degree of wireless channel.
LTE defines order instruction (Rank Indication, RI) and channel quality instruction (Channel in related protocol
Quality Indication, CQI) measurement standard as down channel, base station is reported to by user equipment (UE)
(evolved Node B, eNB).The system switched between user TM based on the prior art, the master when determining optimal TM
Consider these information.However, RI only indicates the available independent parallel channel number of wireless channel, and CQI is then only main anti-
Downlink SINR is reflected.
Therefore, based on the scheme of the prior art, using parameters such as the unified threshold values of RI and CQI as when switching transmission mode
Used switching judging foundation may be switched to inappropriate without other factors such as the scattering degree of consideration channel
Transmission mode, so as to cause the deterioration of current radio channel transmission performance.
Summary of the invention
The method of used handoff parameter when the object of the present invention is to provide a kind of for determining that eNB switches transmission mode
And device.
According to an aspect of the invention, there is provided a kind of be used to determine used switching when eNB switches transmission mode
The method of parameter, wherein the described method comprises the following steps:
A obtains one group of geographical feature corresponding with the eNB and indicates information, wherein one group of geographical feature instruction letter
Breath includes that one or more geographical features indicate information；
B is based on one group of geographical feature and indicates information, to determine channel type corresponding to the eNB；
C determines the value of one or more handoff parameters corresponding with the channel type, so that the eNB is based on institute really
The fixed respective parameter value of one or more handoff parameter carrys out execution pattern switching.
According to an aspect of the present invention, additionally providing one kind, auxiliary determination is adopted when switching transmission mode in the enb
The method of handoff parameter, wherein the described method comprises the following steps:
Obtain corresponding one or more sub- geography information with one or more user equipmenies (UE)；
The respective one or more sub- geography information of one or more of user equipmenies are based on, are worked as described in determination
One or more geographical features of preceding transmission channel indicate information, will one or more geographical features indicate information as
One group of geographical feature instruction information is sent to relevant device.
According to an aspect of the present invention, used when additionally providing one kind for determining that eNB switches transmission mode to cut
Change the parameter determining device of parameter, wherein the parameter determining device includes:
First acquisition device indicates information for obtaining one group of geographical feature corresponding with the eNB, wherein described one
Group geographical feature instruction information includes one or more geographical feature instruction information；
First determining device, for indicating information based on one group of geographical feature, to determine letter corresponding to the eNB
Road type；
Second determining device, for determining the parameters of one or more handoff parameters corresponding with the channel type
Parameter value, for the eNB based on determined by the respective parameter value of one or more handoff parameter cut come execution pattern
It changes.
According to an aspect of the present invention, additionally providing one kind, auxiliary determination is adopted when switching transmission mode in the enb
The auxiliary device of handoff parameter, wherein the auxiliary device includes:
Second acquisition device, for obtaining corresponding one or more son ground with one or more user equipmenies (UE)
Manage information；
Determining device is indicated, based on the respective one or more geographical letters of son of one or more of user equipmenies
Breath determines one or more geographical features instruction information of the current transmission channel, will be described one or more geographical special
Sign instruction information is sent to relevant device as one group of geographical feature instruction information.
Compared with prior art, the invention has the following advantages that the handoff parameter of different channels type is directed to by determining,
ENB is enabled more precisely to select suitable transmission mode for UE, to promote the handling capacity of data transmission；Also, this
The method of invention is directed to the handoff parameter of different channels type by determining in the equipment such as OAM, thus true for multiple eNB
The adaptable switching threshold of fixed and locating for it channel type is easy to without carrying out the operation such as software upgrading respectively in each eNB
Implement, and saves relevant software upgrading cost.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent upon:
Fig. 1 illustrates according to the present invention a kind of for determining handoff parameter used when switching transmission mode
Method flow diagram；
Fig. 2 used handoff parameter when illustrating one kind according to the present invention for determining that eNB switches transmission mode
Parameter determining device and auxiliary device for assisting determining used when switching transmission mode handoff parameter in the enb
Device structural schematic diagram.
The same or similar appended drawing reference represents the same or similar component in attached drawing.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing.
Fig. 1 illustrates according to the present invention a kind of for determining handoff parameter used when switching transmission mode
Method flow diagram.Wherein, include the steps that executing S101, step S102 and step by parameter determining device according to the method for the present invention
Rapid S103, and the step S201 and step S202 that are executed by auxiliary device.
Wherein, auxiliary device according to the present invention may include in the third party device that can be communicated with eNB, can also
It is contained in eNB.
Parameter determining device according to the present invention may be included in operation management maintainance (Operation Administration
And Maintenance, OAM) in equipment.
Wherein, the base station includes various base stations, such as macro base station, micro-base station, femto base station.
Wherein, the solution of the present invention classifies to transmission channel based on the scattering degree of channel.
Preferably, channel type according to the present invention includes but is not limited to any of the following:
1) sighting distance (Line of Sight, LoS) type；The sighting distance type is used to indicate the lower channel of scattering degree.
2) intermediate form between sighting distance and non line of sight (Not Line of Sight, NLoS)；
3) non line of sight type.The non line of sight type is used to indicate the higher channel of scattering degree.
Preferably, the present invention also can be used other modes and classify come the scattering degree based on channel, for example, by channel
Five types etc. corresponding to different scattering degree are divided into, above-mentioned three types are not limited solely to.
Referring to Fig.1, in step s 201, auxiliary device obtains corresponding with one or more user equipmenies (UE)
One or more sub- geography information.
Wherein, the sub- geography information includes the information of the various geographical features that can be used for determining channel circumstance.
Wherein, sub- geography information corresponding to the UE includes but is not limited at least any one following information:
1) wave of UE reaches (Direction of Arrival, DoA) angle information；
2) path delay of time information of UE
3) information on path loss etc. of UE.
Preferably, the sub- geography information includes that the wave of each UE is believed up to (Direction of Arrival, DoA) angle
Breath.
Specifically, auxiliary device using such as multiple signal classification (multiple signal classification,
MUSIC) or by rotation invariant technology estimate signal parameter (Estimating signal parameters
Viarotational invariance techniques, ESPRIT) etc. can be used for the algorithm of Modulation recognition to obtain described one
A or multiple respective DoA angle informations of UE.
In step S202, auxiliary device is based on the respective one or more sons of one or more of user equipmenies
Geography information determines one or more geographical features instruction information of the current transmission channel, will be described one or more
Geographical feature indicates that information is sent to relevant device as one group of geographical feature instruction information.
Wherein, the geographical feature instruction information of the transmission channel includes but is not limited at least any one following information:
1) DoA angle spread information；
2) distribution of multipath time delay information；
3) path loss distributed intelligence etc..
Specifically, auxiliary device is based on the respective one or more geographical letters of son of one or more of user equipmenies
Breath, is respectively adopted and the corresponding measuring method of each seed geography information is corresponding with current transmission channel various geographical special to determine
Sign instruction information indicates letter using various geographical feature instruction information obtained as one group of geographical feature of the transmission channel
Breath is sent to relevant device.
For example, for the DoA angle spread information for including in geographical feature instruction information, auxiliary device is based on being obtained
The respective DoA angle information of one or more of user equipmenies obtained executes algorithm corresponding with DoA angle information, with true
Determine the DoA angle spread information of current transmission channel, and the DoA angle spread information and other various geographical feature instructions are believed
Breath, the distribution of multipath time delay information of the transmission channel such as determined based on the path delay of time information of UE, alternatively, the path based on UE
The path loss distributed intelligence of transmission channel etc. that information determines is lost, indicates letter as one group of geographical feature of the transmission channel together
Breath is sent to relevant device.
Preferably, auxiliary device can determine the DoA angle spread information of current transmission channel based on following formula:
DoAAngleSpread=max (DoASet)-min (DoASet) (1)
Wherein, DoAAngleSpread indicates DoA angle spread information, and DoASet indicates the DoA angle that each UE is reported
The set of information, max (DoASet) indicate the maximum value in the set of DoA angle information, and min (DoASet) indicates DoA angle
Minimum value in the set of information.
Wherein, those skilled in the art should can determine respectively the path delay of time letter based on UE according to the actual situation and demand
It ceases to determine distribution of multipath time delay information and/or determine the mode etc. of path loss distributed intelligence based on the information on path loss of UE,
Details are not described herein.
First example according to the present invention, auxiliary device are contained in the OAM in LTE system, and parameter determining device is contained in
ENB, the corresponding geographical feature instruction information of auxiliary device is DoA angle spread information, and auxiliary device is based in step s 201
The DoA angle information corresponding with multiple UE obtained, it is corresponding with current transmission channel to calculate acquisition based on above-mentioned formula (1)
DoA angle spread information DoA_infor1, then using this DoA angle spread information DoA_infor1 as the transmission channel
One group of geographical feature instruction information is sent to OAM.
With continued reference to Fig. 1, in step s101, parameter determining device obtains one group of geographical feature corresponding with the eNB
Indicate information.
Wherein, one group of geographical feature instruction information includes one or more geographical feature instruction information.
Specifically, parameter determining device receives one group of geography from eNB or other equipment, corresponding with the eNB
Feature indicates information.
Then, in step s 102, parameter determining device is based on one group of geographical feature and indicates information, described to determine
Channel type corresponding to eNB.
Specifically, parameter determining device indicates letter to every geographical feature in one group of geographical feature instruction information
Breath, determines the interval range corresponding to it respectively；Then, based on each geographical feature in this group of geographical feature instruction information
The corresponding interval range of information is indicated, to determine channel type corresponding to this group of geographical feature instruction information.
Continue to be illustrated foregoing First example, scheduled channel type includes sighting distance type, intermediate form and non-view
Away from type, if also, the rule of correspondence of scheduled interval range and channel type includes: the DoA angle of current transmission channel
It extends information and is greater than or equal to predetermined threshold f1, then correspond to non line of sight type；It is if it is less than or equal to predetermined threshold f2, then right
It should be in sighting distance type；If DoA angle spread information is less than f1 and is greater than f2, correspond to intermediate form.
Then parameter determining device is based on the DoA angle spread information DoA_ from eNB received in step S101
Infor1 determines that the interval range of DoA angle spread information DoA_infor1 is greater than predetermined threshold f1, then parameter determines dress
It sets based on the interval range and the above-mentioned rule of correspondence, channel type corresponding to the determining and eNB is non line of sight type.
With continued reference to Fig. 1, then, in step s 103, parameter determining device determines corresponding with the channel type one
The value of a or multiple handoff parameters, for the eNB respective parameter of one or more handoff parameter based on determined by
Value carrys out execution pattern switching.
Wherein, the handoff parameter includes order instruction (RI) parameter and channel quality relevant parameter.
Preferably, the handoff parameter includes for determining that is switched between TM3 mode and TM8/TM9 mode cuts
Change threshold parameter.
Preferably, which is Signal to Interference plus Noise Ratio (Signal to Interference
Plus Noise Ratio, SINR).
Specifically, to each handoff parameter of one or more of handoff parameters, parameter determining device is based on the letter
Road type, by selecting parameter value corresponding with the channel type in one or more parameter values of the handoff parameter.
Continue to be illustrated foregoing First example, the corresponding handoff parameter of parameter determining device be included in TM3 mode and
The threshold value of the RI and SINR that are switched between TM8/TM9 mode, also, each switching ginseng being pre-stored in parameter determining device
Number includes: two threshold values RI_1 and SINR_1 corresponding to sighting distance type, corresponding to non line of sight type two threshold value RI_2 and
SINR_2, and two threshold values RI_3 and SINR_3 corresponding to intermediate form.
Parameter determining device wherein corresponds to identified channel type " non-view based on pre-stored handoff parameter, selection
Away from type " RI threshold value RI_2 and SINR threshold value SINR_2, and eNB is then sent it to, so that the eNB is based on determined by
Threshold value RI_2 and threshold value SINR_2 executes the pattern switching between TM3 mode and TM8/TM9 mode.
Preferably, the parameter determining device and auxiliary device execute the step based on scheduled time conditions respectively
The operation of S101 to step S103 and the operation of the step S201 to step S202, periodically to join to identified switching
Number is updated.
Preferably, the method also includes the step S203 (not shown) executed by auxiliary device and step S204, (figure is not
Show).
In step S203, auxiliary device receives one or more corresponding with one group of geographical feature instruction information and cuts
Change parameter.
In step S204, to a UE, auxiliary device is based on the respective parameter value of one or more of handoff parameters, comes
The transmission mode of the UE is switched over.
Continuing to be illustrated foregoing First example, auxiliary device receives the CQI information that each UE is reported and RI information, and
The SINR and RI of prompting message are calculated in t moment, smoothed out based on following formula:
SINR (t)=b*SINR_LUT (CQI (t))+(1-b) * SINR (t-1) (2)
RI (t)=b*RI (t)+(1-b) * RI (t-1) (3)
Wherein, CQI (t) indicates the CQI information that t moment reports, and RI (t) indicates the RI information that t moment reports, SINR_LUT
(CQI (t)) indicates the SINR information corresponding with CQI (t) through tabling look-up, and b indicates filtration coefficient.
Also, eNB executes the pattern switching between TM3 mode and TM8/TM9 mode based on following rule: if be based on
The SINR (t) corresponding with a UE that above-mentioned formula (2) and (3) obtain is greater than threshold value SINR_2 and RI (t) is greater than threshold value RI_2,
Then eNB determines that transmission mode corresponding with the UE is TM3 mode, is otherwise TM8 or TM9 mode.
According to the method for the present invention, by determine be directed to different channels type handoff parameter, enable eNB more subject to
Suitable transmission mode really is selected for UE, to promote the handling capacity of data transmission；Also, method of the invention passes through all
In such as OAM equipment determine be directed to different channels type handoff parameter, thus for multiple eNB determine with its locating for channel class
The adaptable switching threshold of type, it is easy to implement without carrying out the operation such as software upgrading respectively in each eNB, and save correlation
Software upgrading cost.
Fig. 2 used handoff parameter when illustrating one kind according to the present invention for determining that eNB switches transmission mode
Parameter determining device and auxiliary device for assisting determining used when switching transmission mode handoff parameter in the enb
Structural schematic diagram.
Parameter determining device according to the present invention is determined including the first acquisition device 101, the first determining device 102 and second
Device 103.Auxiliary device according to the present invention includes the second acquisition device 201 and instruction determining device 202.
Referring to Fig. 2, the second acquisition device 201 obtain with corresponding one of one or more user equipmenies (UE) or
Multinomial sub- geography information.
Wherein, the sub- geography information includes the information of the various geographical features that can be used for determining channel circumstance.
Wherein, sub- geography information corresponding to the UE includes but is not limited at least any one following information:
1) wave of UE reaches (Direction of Arrival, DoA) angle information；
2) path delay of time information of UE
3) information on path loss etc. of UE.
Preferably, the sub- geography information includes that the wave of each UE is believed up to (Direction of Arrival, DoA) angle
Breath.
Specifically, the second acquisition device 201 uses such as multiple signal classification (multiple signal
Classification, MUSIC) or by rotation invariant technology estimation signal parameter (Estimating signal
Parameters viarotational invariance techniques, ESPRIT) etc. can be used for the algorithm of Modulation recognition
To obtain the respective DoA angle information of one or more of UE.
Indicate that determining device 202 is based on the respective one or more geographical letters of son of one or more of user equipmenies
Breath determines one or more geographical features instruction information of the current transmission channel, will be described one or more geographical special
Sign instruction information is sent to relevant device as one group of geographical feature instruction information.
Wherein, the geographical feature instruction information of the transmission channel includes but is not limited at least any one following information:
1) DoA angle spread information；
2) distribution of multipath time delay information；
3) path loss distributed intelligence etc..
Specifically, it is respective described one or more to be based on one or more of user equipmenies for instruction determining device 202
Sub- geography information, is respectively adopted and the corresponding measuring method of each seed geography information is corresponding with current transmission channel each to determine
Kind geographical feature indicates information, using various geographical features instruction information obtained as one group of geographical spy of the transmission channel
Sign instruction information is sent to relevant device.
For example, indicating determining device 202 for the DoA angle spread information for including in geographical feature instruction information
Based on one or more of respective DoA angle informations of user equipment obtained, calculate corresponding with DoA angle information is executed
Method, to determine the DoA angle spread information of current transmission channel, so that auxiliary device is by the DoA angle spread information and other
Various geographical features indicate that information, the distribution of multipath time delay of the transmission channel such as determined based on the path delay of time information of UE are believed
Breath, alternatively, being used as the transmission channel together based on the path loss distributed intelligence of transmission channel etc. that the information on path loss of UE determines
One group of geographical feature instruction information be sent to relevant device.
Preferably, instruction determining device 202 can determine the DoA angle spread letter of current transmission channel based on following formula
Breath:
DoAAngleSpread=max (DoASet)-min (DoASet) (1)
Wherein, DoAAngleSpread indicates DoA angle spread information, and DoASet indicates the DoA angle that each UE is reported
The set of information, max (DoASet) indicate the maximum value in the set of DoA angle information, and min (DoASet) indicates DoA angle
Minimum value in the set of information.
Wherein, those skilled in the art should can determine respectively the path delay of time letter based on UE according to the actual situation and demand
It ceases to determine distribution of multipath time delay information and/or determine the mode etc. of path loss distributed intelligence based on the information on path loss of UE,
Details are not described herein.
First example according to the present invention, auxiliary device are contained in the OAM in LTE system, and parameter determining device is contained in
ENB, the corresponding geographical feature instruction information of auxiliary device are DoA angle spread information, and instruction determining device 202 is based on second and obtains
The DoA angle information corresponding with multiple UE for taking device 201 to obtain, calculates acquisition and current transmission based on above-mentioned formula (1)
The corresponding DoA angle spread information DoA_infor1 of channel, then auxiliary device is by this DoA angle spread information DoA_
Infor1 is sent to OAM as one group of geographical feature instruction information of the transmission channel.
With continued reference to Fig. 2, the first acquisition device 101 obtains one group of geographical feature corresponding with the eNB and indicates information.
Wherein, one group of geographical feature instruction information includes one or more geographical feature instruction information.
Specifically, the first acquisition device 101 receive it is from eNB or other equipment, one group corresponding with the eNB
It manages feature and indicates information.
Then, the first determining device 102 is based on one group of geographical feature and indicates information, to determine corresponding to the eNB
Channel type.
Specifically, the first determining device 102 includes ranges determination device (not shown) and type determination device (not shown).
Ranges determination device indicates information to every geographical feature in one group of geographical feature instruction information, true respectively
Determine the interval range corresponding to it；Then, type determination device is based on each geography in this group of geographical feature instruction information
Feature indicates the corresponding interval range of information, to determine channel type corresponding to this group of geographical feature instruction information.
Continue to be illustrated foregoing First example, scheduled channel type includes sighting distance type, intermediate form and non-view
Away from type, if also, the rule of correspondence of scheduled interval range and channel type includes: the DoA angle of current transmission channel
It extends information and is greater than or equal to predetermined threshold f1, then correspond to non line of sight type；It is if it is less than or equal to predetermined threshold f2, then right
It should be in sighting distance type；If DoA angle spread information is less than f1 and is greater than f2, correspond to intermediate form.
The then DoA angle spread information DoA_ from eNB that ranges determination device is received based on the first acquisition device 101
Infor1 determines that the interval range of DoA angle spread information DoA_infor1 is greater than predetermined threshold f1, then type determines dress
It sets based on the interval range and the above-mentioned rule of correspondence, channel type corresponding to the determining and eNB is non line of sight type.
With continued reference to Fig. 2, then, the second determining device 103 determines that one or more corresponding with the channel type is cut
The value of parameter is changed, so that the eNB executes mould based on the identified respective parameter value of one or more handoff parameter
Formula switching.
Wherein, the handoff parameter includes order instruction (RI) parameter and channel quality relevant parameter.
Preferably, the handoff parameter includes for determining that is switched between TM3 mode and TM8/TM9 mode cuts
Change threshold parameter.
Preferably, which is Signal to Interference plus Noise Ratio (Signal to Interference
Plus Noise Ratio, SINR).
Specifically, the second determining device 103 includes selection device (not shown).
Selection device is to each handoff parameter of one or more of handoff parameters, and parameter determining device is based on the letter
Road type, by selecting parameter value corresponding with the channel type in one or more parameter values of the handoff parameter.
Continue to be illustrated foregoing First example, the corresponding handoff parameter of parameter determining device be included in TM3 mode and
The threshold value of the RI and SINR that are switched between TM8/TM9 mode, also, each switching ginseng being pre-stored in parameter determining device
Number includes: two threshold values RI_1 and SINR_1 corresponding to sighting distance type, corresponding to non line of sight type two threshold value RI_2 and
SINR_2, and two threshold values RI_3 and SINR_3 corresponding to intermediate form.
Selection device wherein corresponds to identified channel type " non line of sight class based on pre-stored handoff parameter, selection
RI threshold value RI_2 and SINR the threshold value SINR_2 of type ", then parameter determining device sends it to eNB, so that the eNB is based on institute
Determining threshold value RI_2 and threshold value SINR_2 executes the pattern switching between TM3 mode and TM8/TM9 mode.
Preferably, the parameter determining device and auxiliary device execute described first based on scheduled time conditions respectively
The operation of 101 to the second determining device 103 of acquisition device and second acquisition device 201 are to instruction determining device 202
Operation, to be periodically updated to identified handoff parameter.
Preferably, the auxiliary device further includes reception device (not shown) and switching device (not shown).
Reception device receives one or more handoff parameters corresponding with one group of geographical feature instruction information.
To a UE, switching device is based on the respective parameter value of one or more of handoff parameters, to the biography of the UE
Defeated mode switches over.
Continue to be illustrated foregoing First example, reception device receives the CQI information that each UE is reported and RI information, auxiliary
Help device and calculate based on following formula in t moment, smooth out the SINR and RI of prompting message:
SINR (t)=b*SINR_LUT (CQI (t))+(1-b) * SINR (t-1) (2)
RI (t)=b*RI (t)+(1-b) * RI (t-1) (3)
Wherein, CQI (t) indicates the CQI information that t moment reports, and RI (t) indicates the RI information that t moment reports, SINR_LUT
(CQI (t)) indicates the SINR information corresponding with CQI (t) through tabling look-up, and b indicates filtration coefficient.
Also, switching device executes the pattern switching between TM3 mode and TM8/TM9 mode based on following rule: such as
Fruit is greater than threshold value SINR_2 based on the SINR (t) corresponding with a UE that above-mentioned formula (2) and (3) obtain and RI (t) is greater than threshold
Value RI_2, then otherwise it is TM8 or TM9 mode that eNB, which determines that transmission mode corresponding with the UE is TM3 mode,.
According to the solution of the present invention, by determine be directed to different channels type handoff parameter, enable eNB more subject to
Suitable transmission mode really is selected for UE, to promote the handling capacity of data transmission；Also, method of the invention passes through all
In such as OAM equipment determine be directed to different channels type handoff parameter, thus for multiple eNB determine with its locating for channel class
The adaptable switching threshold of type, it is easy to implement without carrying out the operation such as software upgrading respectively in each eNB, and save correlation
Software upgrading cost.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included in the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.This
Outside, it is clear that one word of " comprising " does not exclude other units or steps, and odd number is not excluded for plural number.That states in system claims is multiple
Unit or device can also be implemented through software or hardware by a unit or device.The first, the second equal words are used to table
Show title, and does not indicate any particular order.
Although front is specifically shown and describes exemplary embodiment, it will be understood to those of skill in the art that
It is that without departing substantially from the spirit and scope of claims, can be varied in terms of its form and details.Here
Sought protection illustrates in the dependent claims.These of each embodiment are defined in following number clause
In terms of other:
1. it is a kind of for determining that eNB switches transmission mode when used handoff parameter method, wherein the method packet
Include following steps:
A acquisition one group of geographical feature corresponding with the eNB, which refers to, does not show information, wherein one group of geographical feature instruction
Information includes one or more geographical feature instruction information；
B is based on one group of geographical feature and indicates information, to determine channel type corresponding to the eNB；
C determines the value of one or more handoff parameters corresponding with the channel type, so that the eNB is based on institute really
The fixed respective parameter value of one or more handoff parameter carrys out execution pattern switching.
2. according to method described in clause 1, wherein to each handoff parameter of one or more of handoff parameters, institute
State step c the following steps are included:
It is based on the channel type, it is right with the channel geography by being selected in one or more parameter values of the handoff parameter
The parameter value answered.
3. the method according to clause 1 or 2, wherein to each step b the following steps are included:
Information is indicated to every geographical feature in one group of geographical feature instruction information, is determined corresponding to it respectively
Interval range；
Based on the corresponding section model of geographical feature instruction information each in this group of geographical feature instruction information
It encloses, to determine channel type corresponding to this group of geographical feature instruction information.
4. the method according to any one of clause 1 to 3, wherein the channel type includes following any:
Sighting distance type；
Intermediate form between sighting distance and non line of sight；
Non line of sight type.
5. the method according to any one of clause 1 to 4, wherein the handoff parameter includes order instruction (RI) parameter
With channel quality relevant parameter.
6. a kind of method that auxiliary determines handoff parameter used when switching transmission mode in the enb, wherein described
Method the following steps are included:
Obtain corresponding one or more sub- geography information with one or more user equipmenies (UE)；
The respective one or more sub- geography information of one or more of user equipmenies are based on, are worked as described in determination
One or more geographical features of preceding transmission channel indicate information, will one or more geographical features indicate information as
One group of geographical feature instruction information is sent to relevant device.
7. according to method described in clause 6, wherein the method also includes following steps:
Receive one or more handoff parameters corresponding with one group of geographical feature instruction information；
Wherein, the method also includes following steps:
To a UE, be based on the respective parameter value of one or more of handoff parameters, to the transmission mode of the UE into
Row switching.
8. it is a kind of for determining that eNB switches transmission mode when used handoff parameter parameter determining device, wherein institute
Stating parameter determining device includes:
First acquisition device indicates information for obtaining one group of geographical feature corresponding with the eNB, wherein described one
Group geographical feature instruction information includes one or more geographical feature instruction information；
First determining device, for indicating information based on one group of geographical feature, to determine letter corresponding to the eNB
Road type；
Second determining device, for determining the parameters of one or more handoff parameters corresponding with the channel type
Parameter value, for the eNB based on determined by the respective parameter value of one or more handoff parameter cut come execution pattern
It changes.
9. according to parameter determining device described in clause 8, wherein each switching to one or more of handoff parameters
Parameter, second determining device include:
Selection device, for be based on the channel type, by one or more parameter values of the handoff parameter select with
The corresponding parameter value of the channel type.
10. the parameter determining device according to clause 8 or 9, wherein include: to each second determining device
Ranges determination device, for indicating information to every geographical feature in one group of geographical feature instruction information,
The interval range corresponding to it is determined respectively；
Type determination device, for based on each geographical feature instruction information point in this group of geographical feature instruction information
Not corresponding interval range, to determine channel type corresponding to this group of geographical feature instruction information.
11. the parameter determining device according to any one of clause 8 to 10, wherein the channel type includes following
It is any:
Sighting distance type；
Intermediate form between sighting distance and non line of sight；
Non line of sight type.
12. the parameter determining device according to any one of clause 1 to 4, wherein the handoff parameter includes order instruction
(RI) parameter and channel quality relevant parameter.
13. a kind of auxiliary in the enb determines the auxiliary device of handoff parameter used when switching transmission mode,
In, the auxiliary device includes:
Second acquisition device, for obtaining the one or more sons corresponding with one or more user equipmenies (UE)
Geography information；
Determining device is indicated, based on the respective one or more geographical letters of son of one or more of user equipmenies
Breath determines one or more geographical features instruction information of the current transmission channel, will be described one or more geographical special
Sign instruction information is sent to relevant device as one group of geographical feature instruction information.
14. according to auxiliary device described in clause 13, wherein the auxiliary device further include:
Reception device, for receiving one or more handoff parameters corresponding with one group of geographical feature instruction information；
Wherein, the auxiliary device further include:
Switching device, for the respective parameter value of one or more of handoff parameters being based on, to the UE to a UE
Transmission mode switch over.
Claims (14)
1. it is a kind of for determining that eNB switches transmission mode when used handoff parameter method, wherein the method includes with
Lower step:
A obtains one group of geographical feature corresponding with the eNB and indicates information, wherein one group of geographical feature indicates packet
Include one or more geographical feature instruction information；
B is based on one group of geographical feature and indicates information, to determine channel type corresponding to the eNB, wherein the side
Method classifies to transmission channel based on the scattering degree of channel；
C determines the value of one or more handoff parameters corresponding with the channel type, so that the eNB is based on determining
The respective parameter value of one or more handoff parameter come execution pattern switching.
2. according to the method described in claim 1, wherein, to each handoff parameter of one or more of handoff parameters, institute
State step c the following steps are included:
It is based on the channel type, it is corresponding with the channel geography by being selected in one or more parameter values of the handoff parameter
Parameter value.
3. method according to claim 1 or 2, wherein to each step b the following steps are included:
Information is indicated to every geographical feature in one group of geographical feature instruction information, determines the area corresponding to it respectively
Between range；
Based on the corresponding interval range of geographical feature instruction information each in this group of geographical feature instruction information, to determine
Channel type corresponding to this group of geographical feature instruction information.
4. according to the method described in claim 1, wherein, the channel type includes following any:
Sighting distance type；
Intermediate form between sighting distance and non line of sight；
Non line of sight type.
5. according to the method described in claim 1, wherein, the handoff parameter includes order instruction (RI) parameter and channel quality phase
Close parameter.
6. a kind of method that auxiliary determines handoff parameter used when switching transmission mode in the enb, wherein the method
The following steps are included:
Obtain one or more sub- geography information corresponding with one or more user equipment (UE)s；
The respective one or more sub- geography information of one or more of user equipmenies are based on, determine that current transmission is believed
One or more geographical features in road indicate information, using one or more geographical feature instruction information as one group of geography
Feature instruction information is sent to relevant device.
7. according to the method described in claim 6, wherein, the method also includes following steps:
Receive one or more handoff parameters corresponding with one group of geographical feature instruction information；
Wherein, the method also includes following steps:
To a UE, it is based on the respective parameter value of one or more of handoff parameters, to cut to the transmission mode of the UE
It changes.
8. it is a kind of for determining that eNB switches transmission mode when used handoff parameter parameter determining device, wherein the ginseng
Counting determining device includes:
First acquisition device indicates information for obtaining one group of geographical feature corresponding with the eNB, wherein described one group
Reason feature instruction information includes one or more geographical feature instruction information；
First determining device, for indicating information based on one group of geographical feature, to determine channel class corresponding to the eNB
Type, wherein the parameter determining device classifies to transmission channel based on the scattering degree of channel；
Second determining device, the ginseng of the parameters for determining one or more handoff parameters corresponding with the channel type
Numerical value, so that the eNB respective parameter value of one or more handoff parameter based on determined by is come execution pattern switching.
9. parameter determining device according to claim 8, wherein each switching to one or more of handoff parameters
Parameter, second determining device include:
Selection device, for being based on the channel type, by being selected and the letter in one or more parameter values of the handoff parameter
The corresponding parameter value of road type.
10. parameter determining device according to claim 8 or claim 9, wherein include: to each second determining device
Ranges determination device, for indicating information to every geographical feature in one group of geographical feature instruction information, respectively
Determine the interval range corresponding to it；
Type determination device, for corresponding based on each geographical feature instruction information in this group of geographical feature instruction information
Interval range, to determine channel type corresponding to this group of geographical feature instruction information.
11. parameter determining device according to claim 8, wherein the channel type includes following any:
Sighting distance type；
Intermediate form between sighting distance and non line of sight；
Non line of sight type.
12. parameter determining device according to claim 8, wherein the handoff parameter include order instruction (RI) parameter and
Channel quality relevant parameter.
13. the auxiliary device that a kind of auxiliary in the enb determines handoff parameter used when switching transmission mode, wherein institute
Stating auxiliary device includes:
Second acquisition device, for obtaining the one or more sons geographical letter corresponding with one or more user equipment (UE)s
Breath；
It indicates determining device, is based on the respective one or more sub- geography information of one or more of user equipmenies, really
One or more geographical features are indicated information by the one or more geographical features instruction information for determining current transmission channel
Relevant device is sent to as one group of geographical feature instruction information.
14. auxiliary device according to claim 13, wherein the auxiliary device further include:
Reception device, for receiving one or more handoff parameters corresponding with one group of geographical feature instruction information；
Wherein, the auxiliary device further include:
Switching device, for the respective parameter value of one or more of handoff parameters being based on, to the biography of the UE to a UE
Defeated mode switches over.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282496A (en) * | 1997-12-19 | 2001-01-31 | 艾利森电话股份有限公司 | System and method for improving handoffs in cellular mobile radio systems |
| CN101087166A (en) * | 2006-06-05 | 2007-12-12 | 中兴通讯股份有限公司 | A method and device for switching multi-antenna system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8150421B2 (en) * | 2005-12-30 | 2012-04-03 | Trueposition, Inc. | User plane uplink time difference of arrival (U-TDOA) |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282496A (en) * | 1997-12-19 | 2001-01-31 | 艾利森电话股份有限公司 | System and method for improving handoffs in cellular mobile radio systems |
| CN101087166A (en) * | 2006-06-05 | 2007-12-12 | 中兴通讯股份有限公司 | A method and device for switching multi-antenna system |
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