CN103229575B - Method for channel allocation, device, base station and system - Google Patents
Method for channel allocation, device, base station and system Download PDFInfo
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- CN103229575B CN103229575B CN201280002188.2A CN201280002188A CN103229575B CN 103229575 B CN103229575 B CN 103229575B CN 201280002188 A CN201280002188 A CN 201280002188A CN 103229575 B CN103229575 B CN 103229575B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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Abstract
Method for channel allocation, device, base station and system, described method includes: base station is according to the layout pitch of SACCH frame in the measurement cycle, frame in the described measurement cycle is divided into subframe group, the SACCH frame of same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group；Described base station obtains the maximum in the meansigma methods of described interference calling interference level in described subframe group；Described maximum is sent to base station controller by described base station, so that described base station controller is that new call distributes channel according to described maximum.The application embodiment of the present invention, can reduce calculated interference level and actual interference level deviation under DTX pattern, improve the accuracy of channel distribution.
Description
Technical field
The present invention relates to communication technical field, particularly to method for channel allocation, device, base station and system.
Background technology
Base station controller (Base Station Controller, BSC) brings according to the interference of channel and distinguishes the dry of channel
Disturbing situation, and carry out channel distribution according to the disturbed condition of channel, wherein, the interference fringe grade of channel is the highest, channel
Disturbing the biggest, the priority of channel distribution is the lowest.Received signal strength indicator (Received on base station measurement idle channel
Signal Strength Indication, RSSI) value, RSSI value is mapped as interference level, and by certain a period of time
It is mapped as interference fringe after interior interference level filtering.Base station can indicate (Radio periodically through radio frequency resource
Frequency Resource Indication, RFRI) interference fringe of each idle channel reports BSC by message.
In the prior art, base station measure idle channel interference level time, will measure slow associated control channel
(Slow Associated Control Channel, SACCH) in multiframe period, the interference level of each frame is averaged.
But, interference calling is in the situation of discontinuous transmission (Discontinuous Transmission, DTX) pattern
Under, interference source the most persistently launches power, therefore uses above-mentioned prior art that strong jamming may be caused to become weak jamming, thus
The interference level making the calculated channel in base station is relatively big with actual interference level difference, causes channel distribution inaccurate.
Summary of the invention
The embodiment of the present invention provides method for channel allocation, device, base station and system, to solve the dry of detection in prior art
Disturb level and there is deviation with actual interference level, cause channel to distribute inaccurate problem.
In order to solve above-mentioned technical problem, the embodiment of the invention discloses following technical scheme:
First aspect, it is provided that a kind of method for channel allocation, described method includes:
Base station is according to the layout pitch of slow associated control channel SACCH frame in the measurement cycle, by the described measurement cycle
Frame is divided into subframe group, same in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
The SACCH frame of individual interference calling；
Described base station obtains the maximum in the meansigma methods of described interference calling interference level in described subframe group；
Described maximum is sent to base station controller by described base station, so that described base station controller according to described maximum is
New call distribution channel.
In conjunction with first aspect, in the first possible implementation of first aspect, described base station obtains described interference and exhales
It is the maximum in the meansigma methods of the interference level in described subframe group, including:
Obtain the interference level on the frame that described interference calling comprises in each subframe group in described subframe group；
According to the interference level on the frame comprised in described each subframe group, calculate the interference electricity in described each subframe group
Flat meansigma methods；
The meansigma methods of the interference level in described each subframe group obtains described maximum.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, described base station obtains described interference and exhales
It is the maximum in the meansigma methods of the interference level in described subframe group, including:
When the community at described interference calling place has same number of frames skew, described base station is according to described vertical shift, described
Subframe group is chosen a subframe group, the SACCH frame of the most corresponding described interference calling of frame comprised in one subframe group；
Obtain the interference level on the frame that described interference calling comprises in one subframe group；
According to the interference level on the frame comprised in one subframe group, calculate the interference electricity in one subframe group
Flat meansigma methods, using described meansigma methods as described maximum.
In conjunction with first aspect, or the first possible implementation of first aspect, or the second of first aspect is possible
Implementation, in the third possible implementation of first aspect, at least one interference in described interference calling is exhaled
Cry and be in discontinuous transmission DTX pattern.
In conjunction with first aspect, or the first possible implementation of first aspect, or the second of first aspect is possible
Implementation, or the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect
In, the described measurement cycle is particularly as follows: comprise the SACCH multiframe period of 104 frames.
Second aspect, it is provided that a kind of channel dividing arrangement, described device includes:
Division unit, for according to the layout pitch of SACCH frame in the measurement cycle, dividing the frame in the described measurement cycle
For subframe group, same interference in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
The SACCH frame of calling；
Acquiring unit, the maximum in the meansigma methods obtaining described interference calling interference level in described subframe group
Value；
Transmitting element, for described maximum is sent to base station controller so that described base station controller according to described
Big value distributes channel for new call.
In conjunction with second aspect, in the first possible implementation of second aspect, described acquiring unit includes:
First obtains subelement, for obtaining the frame that described interference calling comprises in each subframe group in described subframe group
Interference level；
First computation subunit, for according to the interference level on the frame comprised in described each subframe group, calculates described
The meansigma methods of the interference level in each subframe group；
Described first obtains subelement, is additionally operable to the meansigma methods of the interference level in described each subframe group acquisition described
Maximum.
In conjunction with second aspect, in the implementation that the second of second aspect is possible, described acquiring unit includes:
Second selects subelement, for when the community at described interference calling place has same number of frames skew, according to described frame
Skew, chooses a subframe group in described subframe group, and the most corresponding described interference of frame comprised in one subframe group is exhaled
The SACCH frame cried；
Second obtains subelement, for obtaining the interference electricity on the frame that described interference calling comprises in one subframe group
Flat；
Second computation subunit, for according to the interference level on the frame comprised in one subframe group, calculates described
The meansigma methods of the interference level in one subframe group, using described meansigma methods as described maximum.
The third aspect, it is provided that a kind of base station, described base station includes: transceiver and processor, wherein,
Described processor, for according to the layout pitch of SACCH frame in the measurement cycle, draws the frame in the described measurement cycle
It is divided into subframe group, same dry in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
Disturb the SACCH frame of calling, and obtain the maximum in the meansigma methods of described interference calling interference level in described subframe group
Value；
Described transceiver, for being sent to base station controller by described maximum, so that described base station controller is according to institute
Stating maximum is that new call distributes channel.
In conjunction with the third aspect, in the first possible implementation of the third aspect, described processor, specifically for obtaining
Take the interference level on the frame that described interference calling comprises in each subframe group in described subframe group, according to described every height
The interference level on frame comprised in frame group, calculates the meansigma methods of interference level in described each subframe group, and from institute
State in the meansigma methods of the interference level in each subframe group and obtain described maximum.
In conjunction with the third aspect, in the implementation that the second of the third aspect is possible, described processor, specifically for working as
When the community at described interference calling place has same number of frames skew, according to described vertical shift, in described subframe group, choose one
Individual subframe group, the SACCH frame of the most corresponding described interference calling of frame comprised in one subframe group, obtain described interference
The interference level on frame that calling comprises in one subframe group, according on the frame comprised in one subframe group
Interference level, calculates the meansigma methods of interference level in one subframe group, using described meansigma methods as described maximum
Value.
Fourth aspect, it is provided that a kind of channel assigning system, described system includes: base station and base station controller；Wherein,
Described base station, for according to the layout pitch of SACCH frame in the measurement cycle, dividing the frame in the described measurement cycle
For subframe group, same interference in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
The SACCH frame of calling, obtains the maximum in the meansigma methods of described interference calling interference level in described subframe group,
And described maximum is sent to base station controller；
Described base station controller, being used for according to described maximum is that new call distributes channel.
In conjunction with fourth aspect, in the first possible implementation of fourth aspect, described base station, specifically for obtaining
The interference level on frame that described interference calling comprises in each subframe group in described subframe group, according to described each subframe
The interference level on frame comprised in group, calculates the meansigma methods of interference level in described each subframe group, from described often
The meansigma methods of the interference level in individual subframe group obtains described maximum.
In conjunction with fourth aspect, in the implementation that the second of fourth aspect is possible, described base station, specifically for working as
State interference calling place community have same number of frames skew time, according to described vertical shift, in described subframe group, choose one
Subframe group, the SACCH frame of the most corresponding described interference calling of frame comprised in one subframe group, obtain described interference and exhale
It is the interference level on the frame comprised in one subframe group, according to doing on the frame comprised in one subframe group
Disturb level, calculate the meansigma methods of interference level in one subframe group, using described meansigma methods as described maximum.
In conjunction with fourth aspect, or the first possible implementation of fourth aspect, or the second of fourth aspect is possible
Implementation, in the third possible implementation of fourth aspect, described base station controller, specifically for passing through
State the Carrier interference ratio CIR of maximum value calculation candidate channel, and be new call distribution according to the CIR of described candidate channel
Channel.
In the embodiment of the present invention, the frame in the measurement cycle, according to the layout pitch of SACCH frame in the measurement cycle, is drawn by base station
It is divided into subframe group, same interference in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
The SACCH frame of calling, obtains the maximum in the meansigma methods of interference calling interference level in subframe group, by this maximum
Value is sent to base station controller, so that base station controller is that new call distributes channel according to this maximum.The application present invention
Embodiment, can be under DTX pattern in interference calling, reduce calculated interference level inclined with actual interference level
Difference, improves the accuracy of channel distribution.
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 embodiment or existing
In technology description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only originally
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is an embodiment flow chart of method for channel allocation of the present invention；
Fig. 2 A is another embodiment flow chart of method for channel allocation of the present invention；
Fig. 2 B is the frame structure schematic diagram in the embodiment of the present invention in SACCH multiframe period；
Fig. 3 A is another embodiment flow chart of method for channel allocation of the present invention；
Fig. 3 B is the structural representation of vertical shift in inventive embodiments；
Fig. 4 is an embodiment block diagram of channel dividing arrangement of the present invention；
Fig. 5 A is an embodiment block diagram of acquiring unit in Fig. 4；
Fig. 5 B is another embodiment block diagram of acquiring unit in Fig. 4；
Fig. 6 is the embodiment block diagram of base station of the present invention；
Fig. 7 is the embodiment block diagram of channel assigning system of the present invention.
Detailed description of the invention
Below embodiment of the present invention provides method for channel allocation, device, base station system.
For the technical scheme making those skilled in the art be more fully understood that in the embodiment of the present invention, and the present invention is made to implement
The above-mentioned purpose of example, feature and advantage can become apparent from understandable, below in conjunction with the accompanying drawings to technical side in the embodiment of the present invention
Case is described in further detail.
See Fig. 1, for an embodiment flow chart of method for channel allocation of the present invention:
Step 101: the frame in the measurement cycle, according to the layout pitch of SACCH frame in the measurement cycle, is divided into son by base station
Frame group, same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
SACCH frame.
In the present embodiment, base station, when the frame in the measurement cycle is divided into subframe group, can measure one each time
After measuring the interference level on week interior each frame, the frame in this measurement cycle is divided subframe group, it is also possible to will measure in advance
Frame in cycle is divided into subframe group, follow-up measures the interference level on the frame in each subframe group according to subframe group.
Step 102: base station obtains the maximum in the meansigma methods of interference calling interference level in subframe group.
Optionally, base station can obtain the interference level on the frame that interference calling comprises in each subframe group in subframe group,
According to the interference level on the frame comprised in each subframe group, calculate the meansigma methods of interference level in each subframe group,
And the meansigma methods of the interference level in each subframe group obtains maximum.
Optionally, when the community at interference calling place has same number of frames skew, base station can also according to this vertical shift,
Subframe group is chosen a subframe group, the most corresponding described interference calling of frame comprised in a subframe group of this selection
SACCH frame, obtains the interference level on the frame that interference calling comprises in a subframe group of this selection, calculates this choosing
The meansigma methods of the interference level in the subframe group selected, the interference electricity that this meansigma methods is called in subframe group as interference
The flat maximum in meansigma methods.
Step 103: maximum is sent to base station controller by base station, so that base station controller is newly-built according to this maximum
Calling distribution channel.
After maximum in the meansigma methods disturbing calling interference level in subframe group is sent to base station controller by base station,
Base station controller can call the Carrier interference ratio of candidate channel corresponding to institute's transmission channel by the interference of this maximum value calculation
(Carrier-To-Interference Ratio, CIR), according to the CIR calculated, divides candidate channel best for CIR
Dispensing new call, can use calculation of the prior art when wherein calculating CIR, not repeat them here.
It is pointed out that when disturbing calling to be in non-DTX pattern, equally use said method to measure the free time
The interference of channel, does not limits this embodiment of the present invention.
As seen from the above-described embodiment, base station is according to the layout pitch of SACCH frame in the measurement cycle, by the frame in the measurement cycle
It is divided into subframe group, same dry in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
Disturb the SACCH frame of calling, obtain the maximum in the meansigma methods of interference calling interference level in subframe group, by this
Big value is sent to base station controller, so that base station controller is that new call distributes channel according to this maximum.Apply this
Bright embodiment, can be under DTX pattern in interference calling, reduce calculated interference level and actual interference level
Deviation, improves the accuracy of channel distribution.
See Fig. 2 A, for another embodiment flow chart of method for channel allocation of the present invention:
Step 201: the frame in the measurement cycle, according to the layout pitch of SACCH frame in the measurement cycle, is divided into son by base station
Frame group, same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
SACCH frame.
In the present embodiment, base station, when the frame in the measurement cycle is divided into subframe group, can measure one each time
After measuring the interference level on week interior each frame, the frame in this measurement cycle is divided subframe group, it is also possible to will measure in advance
Frame in cycle is divided into subframe group, follow-up measures the interference level on the frame in each subframe group according to subframe group.
Step 202: when the community at interference calling place has same number of frames skew, base station is according to this vertical shift, in subframe
Group is chosen a subframe group, the SACCH frame of all corresponding interference calling of the frame comprised in the subframe group chosen.
In the embodiment of the present invention, being under DTX pattern in interference calling, within each SACCH multiframe period, interference is exhaled
Cry when not having speech frame to send up usual send SACCH frame and static describe frame (Silence Description,
SID) frame, therefore to reduce the deviation of the calculated interference level of idle channel and actual interference level, the present invention is real
Execute the SACCH frame that can mainly calculate a SACCH internal interference multiframe period calling in example interference electricity on idle channel
Flat meansigma methods is as the interference level of idle channel.
Under interference calling community, place has identical vertical shift configuration, the SACCH frame of interference calling is at each SACCH
Position in multiframe period is fixed, and base station can choose one according to the distribution of the SACCH frame in the measurement cycle and vertical shift
Individual subframe group, the frame comprised in the subframe group that this is chosen is all corresponding with the SACCH frame of interference calling.
See Fig. 2 B, the frame structure schematic diagram in embodiment of the present invention SACCH multiframe period:
In Fig. 2 B, in SACCH multiframe period, include 104 frames, frame number from the 0th frame to the 103rd frame.Wherein,
T represents speech frame, transmits Traffic Channel (Traffic Channel, TCH) on this frame, and S represents SACCH frame, I
Represent that IDLE(is idle), D represents SID frame.From Fig. 2 B, within SACCH multiframe period, SACCH frame
Frame number be respectively 12,38,64 and 90, i.e. from the beginning of the 12nd frame, be a SACCH frame at interval of 26 frames.
Such as, according to the characteristic that is spacedly distributed of the SACCH frame in SACCH multiframe period shown in Fig. 2 B,
In the case of the vertical shift of community, idle channel place is 0, it is assumed that the vertical shift of interference calling community, place is 0,
Then within SACCH multiframe period, frame subframe group in corresponding with the SACCH frame of interference calling be the 12nd, 38,
64 and 90 frames；The vertical shift assuming interference calling community, place is 1, then within SACCH multiframe period, with interference
Frame in the subframe group corresponding to SACCH frame of calling is the 13rd, 39,65 and 91 frames；The rest may be inferred, if base station energy
Enough know the vertical shift of interference calling community, place and community, idle channel place, it is possible to obtain for computation-free channel
The subframe group of interference level.
Step 203: base station obtains the interference level on the frame that interference calling comprises in the subframe group that this is chosen.
In the present embodiment, the interference on each frame that interference calling comprises in the subframe group selected can be measured in base station
Level；Within the SACCH multiframe period preserved, the interference level all frames can also obtain this chosen
The interference level on each frame comprised in subframe group.
Such as, understand in conjunction with Fig. 2 B, within SACCH multiframe period, owing to interference calling is at the DTX of idle condition
Under pattern, have four SACCH frames, therefore can select the subframe group at these four SACCH frame places.
Step 204: according to the interference level on the frame comprised in this subframe group chosen, calculate that this chooses one
The meansigma methods of the interference level in individual subframe group, is sent to base station controller using this meansigma methods as maximum.
Wherein, the meansigma methods calculating the interference level in this subframe group chosen can use two kinds of algorithms: a kind of
Being that linear domain is averaging, one is that dB territory is averaging, and belongs to prior art, does not repeats.
Step 205: base station controller is by the CIR of this maximum value calculation candidate channel, and according to the CIR of candidate channel
Channel is distributed for new call.
Base station controller, after obtaining maximum, can calculate the level value of useful signal and the ratio of maximum, by this ratio
Being worth the CIR as candidate channel, the mode of this calculating CIR can use calculation of the prior art, at this no longer
Repeat.
Wherein, it is that new call distribution channel belongs to prior art according to the CIR of candidate channel, such as, exhales for newly-built
Calling, its candidate channel may have multiple, therefore after the CIR calculating each candidate channel, enters these CIR
Row compares, and candidate channel best for CIR is distributed to new call, and here is omitted.
As seen from the above-described embodiment, when the community at interference calling place has same number of frames skew, base station is according to the cycle of measurement
The layout pitch of interior SACCH frame, is divided into subframe group by the frame in the measurement cycle, there is at least one son in this subframe group
The SACCH frame of same interference calling in all corresponding interference calling of the frame comprised in frame group；According to this vertical shift, in subframe
Group selects a subframe group, the SACCH frame of all corresponding interference calling of the frame comprised in a subframe group of selection；Obtain
The meansigma methods of interference calling interference level in a subframe group of this selection, is sent to base station controller, not only solves
Interference calling is under DTX pattern, and the interference level of the calculated idle channel in base station is with actual interference level deviation relatively
Big problem, improves the accuracy of channel distribution, also reduces the operand of base station, improve the performance of base station.
See Fig. 3 A, for another embodiment flow chart of method for channel allocation of the present invention:
Step 301: the frame in the measurement cycle, according to the layout pitch of SACCH frame in the measurement cycle, is divided into son by base station
Frame group, same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
SACCH frame.
In the present embodiment, base station, when the frame in the measurement cycle is divided into subframe group, can measure one each time
After measuring the interference level on week interior each frame, the frame in this measurement cycle is divided subframe group, it is also possible to will measure in advance
Frame in cycle is divided into subframe group, follow-up measures the interference level on the frame in each subframe group according to subframe group.
In the embodiment of the present invention, being under DTX pattern in interference calling, within each SACCH multiframe period, interference is exhaled
It is up usual transmission SACCH frame and SID frame when not having speech frame to send, therefore to reduce idle channel interference
The deviation of level measurement, will be able to survey with base station according to the layout pitch of SACCH frame in the measurement cycle in the embodiment of the present invention
Frame in the amount cycle is divided into subframe group, and all corresponding interference of the frame comprised in there is at least one subframe group in this subframe group is exhaled
The SACCH frame of same interference calling in crying, thus ensure the interference level of idle channel calculated be not less than this at least one
Interference level in individual subframe group, is i.e. not less than the SACCH frame disturbing calling interference level on idle channel.
Understanding in conjunction with the frame structure in shown in earlier figures 2B SACCH multiframe period, SACCH frame has and divides at equal intervals
Cloth characteristic, the interference calling place in order to avoid the SACCH collision of multiple interference callings, in same SACCH multiframe period
Minizone can arrange different vertical shifts, such as, interference calling 1 transmission channel on the 12nd, 38,64 and 90 frames,
Interference calling 2 transmission channel on the 13rd, 39,65 and 91 frames, interference calling 3 is at the 14th, 40,66 and 92 frames
Upper transmission channel, thus avoid three interference callings SACCH collision when transmission channel.
Seeing Fig. 3 B, for the structural representation of vertical shift in inventive embodiments, wherein, T represents that speech frame, S represent SACCH
Frame, I represents that IDLE, D represent SID frame..Divide at equal intervals owing to the SACCH frame in SACCH multiframe period has
Cloth characteristic, is i.e. a SACCH frame at interval of 26 frames, and has four SACCH in SACCH multiframe period
Therefore every four frames can be divided into a subframe group, are divided into 26 altogether in the present embodiment from the beginning of the 0th frame by frame
Individual subframe group.According to this dividing mode, when minizone vertical shift is 0, frame number is the SACCH of 12,38,64 and 90
Frame is divided into a subframe group, and when minizone vertical shift is 1, frame number is the SACCH frame of 13,39,65 and 91
It is divided into a subframe group, it follows that the least area frame shifting is how many, it is ensured that SACCH multiframe period
Interior SACCH frame can divide a subframe group.
When a SACCH comprises 104 frame multiframe period, base station according to the layout pitch of the SACCH frame in the measurement cycle,
Frame in the measurement cycle is divided into multiple subframe group specifically can be to use the following two kinds mode:
Mode one, from the beginning of the 0th frame, four frames are divided into a subframe group, the frame of adjacent two frames in each subframe group
Number it is spaced apart 26.
Within SACCH multiframe period, SACCH frame has the characteristic that is spacedly distributed, and is i.e. one at interval of 26 frames
Four SACCH frames are had in individual SACCH frame, and SACCH multiframe period, can be from the beginning of the 0th frame, by every four
Frame is divided into a subframe group, is divided into 26 subframe groups altogether.Such as, frame number is the frame division of 0,26,52 and 78
It it is a subframe group；Frame number be 12,38,64 and 90 SACCH frame be divided into a subframe group；Frame number is 13,39,
The frame of 65 and 91 is divided into a subframe group, it is assumed that the frequency deviation of community, idle channel place is 0, when interference calling 1 place
When the vertical shift of community is 0, send SACCH frame in the 12nd, 38,64 moment corresponding with 90 frames of idle channel,
Due on idle channel frame number be 12,38,64 and 90 frame be divided into a subframe group, therefore, in this subframe group in
The SACCH frame of all corresponding interference calling 1 of the frame comprised；When the frequency deviation of interference calling 2 is 1, interference calling 2 is at sky
The 13rd, 39,65 moment corresponding with 91 frames on idle channel send SACCH frames, due to idle channel the 13rd, 39,
65 and 91 frames are divided into a subframe group, therefore, the SACCH of all corresponding interference calling 2 of the frame comprised in this subframe group
Frame；When the frequency deviation at interference calling 3 places is 3, the rest may be inferred.
It follows that the vertical shift no matter disturbing calling community, place is how many, mode stroke molecule frame group is used to protect
The frame that in demonstrate,proving SACCH multiframe period, the SACCH frame of same interference calling is corresponding on idle channel can divide at one
Subframe group.
Mode two, from the beginning of the 0th frame, two frames are divided into a subframe group, in each subframe group between the frame number of two frames
It is divided into 52.
Such as, frame number be 0 and 52 frame be divided into a subframe group；The SACCH frame of frame number 12 and 64 is divided into one
Individual subframe group.
It is pointed out that the dividing mode of subframe group is not limited by the embodiment of the present invention, as long as ensureing a SACCH
The frame that the SACCH frame of the interference calling in multiframe period is corresponding on idle channel can divide a subframe group.
Step 302: base station obtains doing in each subframe group in the interference calling multiple subframe groups within a measurement cycle
Disturb level.
Step 303: base station calculates the meansigma methods of the interference level in each subframe group.
Wherein, the meansigma methods of the interference level in each subframe group can use two kinds of algorithms: one is that linear domain is averaging
Value, one is to average in dB territory, and the above-mentioned algorithm averaged belongs to prior art, does not repeats.
As shown in table 1 below, arrange for the meansigma methods of the channel interference level of transmission in each subframe group after having divided subframe group
Table.Wherein, for full rate TCHF, have 26 subframe groups, the interference level in each subframe group average
Value SUB_IntfRx (i) represents, i value is the integer of 0 to 25；For half rate TCHH, further will
26 subframe components are 13 subframe groups of corresponding sub-slots 0, and the meansigma methods of the interference level in each subframe group is used
SUB0_IntfRx (j) represents, j value is the integer of 0 to 12；And 13 subframe groups of correspondence sub-slots 1, often
Meansigma methods SUB1_IntfRx (k) of the interference level in individual subframe group represents, k value is the integer of 0 to 12:
Table 1
Step 304: base station obtains the maximum in the meansigma methods of the interference level in each subframe group.
Understand in conjunction with table 1, the interference level for full rate TCHF, in SACCH multiframe period
Maximum SUB_IntfRx=MAX{SUB_IntfRx (i) (i=0,1 ... 25)；
Interference level for the sub-slots 0 of half rate TCHH, in SACCH multiframe period
Maximum SUB_IntfRx=MAX{SUB0_IntfRx (j) (j=0,1 ... 12)；
For the sub-slots 1 of half rate TCHH, the maximum of the interference level in SACCH multiframe period
SUB_IntfRx=MAX{SUB1_IntfRx(k)}(k=0,1…12)。
Step 305: maximum is sent to base station controller by base station.
Step 306: the base station controller Carrier interference ratio CIR by maximum value calculation candidate channel, and believe according to candidate
The CIR in road is that new call distributes channel.
After obtaining maximum, the level value of useful signal and the ratio of maximum can be calculated, using this ratio as candidate
The CIR of channel, the mode of this calculating CIR can use calculation of the prior art, not repeat them here.
Wherein, it is that new call distribution channel belongs to prior art according to the CIR of candidate channel, such as, exhales for newly-built
Calling, its candidate channel may have multiple, therefore after the CIR calculating each candidate channel, enters these CIR
Row compares, and candidate channel best for CIR is distributed to new call, and here is omitted.
As seen from the above-described embodiment, base station is according to the layout pitch of SACCH frame in the measurement cycle, by the frame in the measurement cycle
It is divided into subframe group, same dry in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
Disturb the SACCH frame of calling；Obtain the maximum in the meansigma methods of the interference level in each subframe group, and be sent to base station
Controller, solves interference and calls under DTX pattern, and the interference level of the calculated idle channel in base station is done with reality
Disturb the problem that level deviation is bigger, improve the accuracy of channel distribution.
Corresponding with the embodiment of method for channel allocation of the present invention, present invention also offers channel dividing arrangement, base station and be
The embodiment of system.
See Fig. 4, for an embodiment block diagram of channel dividing arrangement of the present invention:
This device includes: division unit 410, acquiring unit 420 and transmitting element 430.
Wherein, division unit 410, for according to the layout pitch of SACCH frame in the measurement cycle, by the described measurement cycle
Interior frame is divided into subframe group, in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
The SACCH frame of same interference calling；
Acquiring unit 420, is used for obtaining in the described meansigma methods disturbing calling interference level in described subframe group
Big value；
Transmitting element 430, for being sent to base station controller by described maximum, so that described base station controller is according to institute
Stating maximum is that new call distributes channel.
See Fig. 5 A, for an embodiment block diagram of acquiring unit in Fig. 4:
This acquiring unit 420 may include that
First obtains subelement 421, for obtaining what described interference calling comprised in each subframe group in described subframe group
Interference level on frame；
First computation subunit 422, for according to the interference level on the frame comprised in described each subframe group, calculates
The meansigma methods of the interference level in described each subframe group；
Described first obtains subelement 420, is additionally operable to the meansigma methods of the interference level in described each subframe group obtain
Described maximum.
See Fig. 5 B, for another embodiment block diagram of acquiring unit in Fig. 4:
This acquiring unit 420 may include that
Second selects subelement 423, for when the community at described interference calling place has same number of frames skew, according to institute
Stating vertical shift, choose a subframe group in described subframe group, the frame comprised in one subframe group is the most corresponding described dry
Disturb the SACCH frame of calling；
Second obtains subelement 424, for obtaining doing on the frame that described interference calling comprises in one subframe group
Disturb level；
Second computation subunit 425, for according to the interference level on the frame comprised in one subframe group, calculates
The meansigma methods of the interference level in one subframe group, using described meansigma methods as described maximum.
As seen from the above-described embodiment, channel dividing arrangement, according to the layout pitch of SACCH frame in the measurement cycle, will be measured week
Frame in phase is divided into subframe group, in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
The SACCH frame of same interference calling；Obtain the maximum in the meansigma methods of the interference level in each subframe group, and will
This maximum is sent to base station controller, solves interference and calls under DTX pattern, the calculated idle channel in base station
The bigger problem of interference level and actual interference level deviation, improve the accuracy of channel distribution.
See Fig. 6, for the embodiment block diagram of base station of the present invention:
This base station includes: transceiver 610 and processor 620.
Wherein, described processor 620, for according to the layout pitch of SACCH frame in the measurement cycle, measuring week by described
Frame in phase is divided into subframe group, all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
In the SACCH frame of same interference calling, and obtain the average of described interference calling interference level in described subframe group
Maximum in value；
Described transceiver 610, for described maximum is sent to base station controller, so that described base station controller root
It is that new call distributes channel according to described maximum.
Optionally, described processor 620, can be specifically for obtaining described interference calling every height in described subframe group
The interference level on frame comprised in frame group, according to the interference level on the frame comprised in described each subframe group, calculates
The meansigma methods of the interference level in described each subframe group, and the meansigma methods of the interference level in described each subframe group
Obtain described maximum.
Optionally, described processor 620, can to have same number of frames inclined specifically for the community when described interference calling place
During shifting, according to described vertical shift, described subframe group is chosen a subframe group, the frame comprised in one subframe group
The SACCH frame of the most corresponding described interference calling, obtains on the frame that described interference calling comprises in one subframe group
Interference level, according to the interference level on the frame comprised in one subframe group, calculates in one subframe group
The meansigma methods of interference level, using described meansigma methods as described maximum.
As seen from the above-described embodiment, base station is according to the layout pitch of SACCH frame in the measurement cycle, by the frame in the measurement cycle
It is divided into subframe group, same dry in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
Disturb the SACCH frame of calling；Obtain the maximum in the meansigma methods of the interference level in each subframe group, and be sent to base station
Controller, solves interference and calls under DTX pattern, and the interference level of the calculated idle channel in base station is done with reality
Disturb the problem that level deviation is bigger, improve the accuracy of channel distribution.
See Fig. 7, for the embodiment block diagram of channel assigning system of the present invention:
This system includes: base station 710 and base station controller 720.
Wherein, described base station 710, for according to the layout pitch of SACCH frame in the measurement cycle, by the described measurement cycle
Interior frame is divided into subframe group, in all corresponding interference calling of the frame comprised in there is at least one subframe group in described subframe group
The SACCH frame of same interference calling, obtains in the meansigma methods of described interference calling interference level in described subframe group
Maximum, and described maximum is sent to base station controller；
Described base station controller 720, being used for according to described maximum is that new call distributes channel.
Optionally, described base station 710, can be specifically for obtaining described interference calling each subframe in described subframe group
The interference level on frame comprised in group, according to the interference level on the frame comprised in described each subframe group, calculates institute
State the meansigma methods of interference level in each subframe group, the meansigma methods of the interference level in described each subframe group obtains
Described maximum.
Optionally, described base station 710, can be specifically for there is same number of frames skew when the community at described interference calling place
Time, according to described vertical shift, described subframe group is chosen a subframe group, the frame comprised in one subframe group is equal
The SACCH frame of correspondence described interference calling, obtains doing on the frame that described interference calling comprises in one subframe group
Disturb level, according to the interference level on the frame comprised in one subframe group, calculate doing in one subframe group
Disturb the meansigma methods of level, using described meansigma methods as described maximum.
Optionally, described base station controller 720, can be specifically for by interference calling institute described in described maximum value calculation
The Carrier interference ratio CIR of the candidate channel that transmission channel is corresponding, and according to the described CIR calculated, by candidate best for CIR
Channel distributes to new call.
As seen from the above-described embodiment, base station is according to the layout pitch of SACCH frame in the measurement cycle, by the frame in the measurement cycle
It is divided into subframe group, same dry in all corresponding interference calling of the frame comprised in there is at least one subframe group in this subframe group
Disturb the SACCH frame of calling, obtain the maximum in the meansigma methods of interference calling interference level in subframe group, by this
Big value is sent to base station controller, so that base station controller is that new call distributes channel according to this maximum.Apply this
Bright embodiment, can be under DTX pattern in interference calling, reduce calculated interference level and actual interference level
Deviation, improves the accuracy of channel distribution.
Those skilled in the art it can be understood that can add by software to the technology in the embodiment of the present invention required
The mode of general hardware platform realizes.Based on such understanding, the technical scheme in the embodiment of the present invention substantially or
Saying that the part contributing prior art can embody with the form of software product, this computer software product is permissible
It is stored in storage medium, such as ROM/RAM, magnetic disc, CD etc., instructs with so that a computer sets including some
Standby (can be personal computer, server, or the network equipment etc.) performs each embodiment of the present invention or embodiment
The method described in some part.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar part between each embodiment
Seeing mutually, what each embodiment stressed is the difference with other embodiments.Especially for system
For embodiment, owing to it is substantially similar to embodiment of the method, so describe is fairly simple, relevant part sees method
The part of embodiment illustrates.
Invention described above embodiment, is not intended that limiting the scope of the present invention.Any the present invention's
Amendment, equivalent and the improvement etc. made within spirit and principle, should be included within the scope of the present invention.
Claims (15)
1. a method for channel allocation, it is characterised in that described method includes:
Frame in the described measurement cycle, according to the layout pitch of slow associated control channel SACCH frame in the measurement cycle, is drawn by base station
It is divided into subframe group, in described subframe group between the described distribution equal to described layout pitch or 2 times of the frame number interval of adjacent two frames
Every and all corresponding interference calling of frame that comprises in there is at least one subframe group in the SACCH frame of same interference calling；
Described base station obtains the maximum in the meansigma methods of described interference calling interference level in described subframe group；
Described maximum is sent to base station controller by described base station, so that described base station controller is newly-built according to described maximum
Calling distribution channel.
Method the most according to claim 1, it is characterised in that described base station obtains described interference calling in described subframe
Maximum in the meansigma methods of the interference level in group, including:
Obtain the interference level on the frame that described interference calling comprises in each subframe group in described subframe group；
According to the interference level on the frame comprised in described each subframe group, calculate interference level in described each subframe group
Meansigma methods；
The meansigma methods of the interference level in described each subframe group obtains described maximum.
Method the most according to claim 1, it is characterised in that described base station obtains described interference calling in described subframe
Maximum in the meansigma methods of the interference level in group, including:
When the community at described interference calling place has same number of frames skew, described base station is according to described vertical shift, in described subframe
Group is chosen a subframe group, the SACCH frame of the most corresponding described interference calling of frame comprised in one subframe group；
Obtain the interference level on the frame that described interference calling comprises in one subframe group；
According to the interference level on the frame comprised in one subframe group, calculate interference level in one subframe group
Meansigma methods, using described meansigma methods as described maximum.
4. according to the method described in claims 1 to 3 any one, it is characterised in that at least in described interference calling
Individual interference calling is in discontinuous transmission DTX pattern.
Method the most according to claim 1, it is characterised in that the described measurement cycle is particularly as follows: comprise 104 frames
SACCH multiframe period.
6. a channel dividing arrangement, it is characterised in that described device includes:
Division unit, for according to the layout pitch of SACCH frame in the measurement cycle, is divided into son by the frame in the described measurement cycle
Frame group, in described subframe group the frame number interval of adjacent two frames equal to described layout pitch or the described layout pitch of 2 times and
The SACCH frame of same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group；
Acquiring unit, the maximum in the meansigma methods obtaining described interference calling interference level in described subframe group；
Transmitting element, for being sent to base station controller by described maximum, so that described base station controller is according to described maximum
Channel is distributed for new call.
Device the most according to claim 6, it is characterised in that described acquiring unit includes:
First obtains subelement, for obtaining doing on the frame that described interference calling comprises in each subframe group in described subframe group
Disturb level；
First computation subunit, for according to the interference level on the frame comprised in described each subframe group, calculates described each
The meansigma methods of the interference level in subframe group；
Described first obtains subelement, is additionally operable to the meansigma methods of the interference level in described each subframe group obtain described maximum
Value.
Device the most according to claim 6, it is characterised in that described acquiring unit includes:
Second selects subelement, for when the community at described interference calling place has same number of frames skew, according to described vertical shift,
A subframe group is chosen, the SACCH of the most corresponding described interference calling of frame comprised in one subframe group in described subframe group
Frame；
Second obtains subelement, for obtaining the interference level on the frame that described interference calling comprises in one subframe group；
Second computation subunit, for according to the interference level on the frame comprised in one subframe group, calculates one
The meansigma methods of the interference level in subframe group, using described meansigma methods as described maximum.
9. a base station, it is characterised in that described base station includes: transceiver and processor, wherein,
Described processor, for according to the layout pitch of SACCH frame in the measurement cycle, is divided into the frame in the described measurement cycle
Subframe group, in described subframe group the frame number interval of adjacent two frames equal to described layout pitch or the described layout pitch of 2 times,
And the SACCH frame of same interference calling in all corresponding interference calling of the frame comprised in there is at least one subframe group, and obtain institute
State the maximum in the meansigma methods of interference calling interference level in described subframe group；
Described transceiver, for described maximum is sent to base station controller so that described base station controller according to described
Big value distributes channel for new call.
Base station the most according to claim 9, it is characterised in that
Described processor, specifically for obtaining doing on the frame that described interference calling comprises in each subframe group in described subframe group
Disturb level, according to the interference level on the frame comprised in described each subframe group, calculate the interference electricity in described each subframe group
Flat meansigma methods, and the meansigma methods of the interference level in described each subframe group obtain described maximum.
11. base stations according to claim 9, it is characterised in that
Described processor, specifically for when the community at described interference calling place has same number of frames skew, according to described vertical shift,
A subframe group is chosen, the SACCH of the most corresponding described interference calling of frame comprised in one subframe group in described subframe group
Frame, obtains the interference level on the frame that described interference calling comprises in one subframe group, according in one subframe group
The interference level on frame comprised, calculates the meansigma methods of interference level in one subframe group, using described meansigma methods as
Described maximum.
12. 1 kinds of channel assigning systems, it is characterised in that described system includes: base station and base station controller；Wherein,
Described base station, for according to the layout pitch of SACCH frame in the measurement cycle, is divided into son by the frame in the described measurement cycle
Frame group, in described subframe group the frame number interval of adjacent two frames equal to described layout pitch or the described layout pitch of 2 times and
In all corresponding interference calling of the frame comprised in there is at least one subframe group, the SACCH frame of same interference calling, obtains described dry
Disturb the maximum in the meansigma methods of calling interference level in described subframe group, and described maximum is sent to base station control
Device；
Described base station controller, being used for according to described maximum is that new call distributes channel.
13. systems according to claim 12, it is characterised in that
Described base station, specifically for obtaining the interference on the frame that described interference calling comprises in each subframe group in described subframe group
Level, according to the interference level on the frame comprised in described each subframe group, calculates the interference level in described each subframe group
Meansigma methods, the meansigma methods of the interference level in described each subframe group obtains described maximum.
14. systems according to claim 12, it is characterised in that
Described base station, specifically for when the community at described interference calling place has same number of frames skew, according to described vertical shift,
A subframe group is chosen, the SACCH of the most corresponding described interference calling of frame comprised in one subframe group in described subframe group
Frame, obtains the interference level on the frame that described interference calling comprises in one subframe group, according in one subframe group
The interference level on frame comprised, calculates the meansigma methods of interference level in one subframe group, using described meansigma methods as
Described maximum.
15. according to the system described in claim 12 to 14 any one, it is characterised in that
Described base station controller, specifically for the Carrier interference ratio CIR by described maximum value calculation candidate channel, and according to institute
The CIR stating candidate channel is that new call distributes channel.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2012/087263 WO2014100927A1 (en) | 2012-12-24 | 2012-12-24 | Channel allocation method, device, base station, and system |
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Citations (4)
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| CN1265255A (en) * | 1997-06-04 | 2000-08-30 | 法国电信局 | Dynamic channel assignment method in cell communication network |
| CN1304221A (en) * | 1999-12-28 | 2001-07-18 | 朗迅科技公司 | Dynamic channel allocation of intelligance antenna |
| EP1168690A2 (en) * | 2000-06-26 | 2002-01-02 | Lucent Technologies Inc. | Method to dynamically determine interference and carrier-to-interference ratio during TDMA calls |
| CN101394660A (en) * | 2007-09-17 | 2009-03-25 | 华为技术有限公司 | Method and device for determining downlink sending mode |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5809059A (en) * | 1996-11-21 | 1998-09-15 | Motorola, Inc. | Method and apparatus for spread spectrum channel assignment |
| CN1146278C (en) * | 1999-08-30 | 2004-04-14 | 华为技术有限公司 | Method for estimating interference level to idle channel in cellular mobile communication system |
| CN102256310A (en) * | 2010-05-19 | 2011-11-23 | 中兴通讯股份有限公司 | Radio resource management method and device supporting voice services over adaptive multi-user channels on one slot (VAMOS) technology |
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2012
- 2012-12-24 WO PCT/CN2012/087263 patent/WO2014100927A1/en active Application Filing
- 2012-12-24 CN CN201280002188.2A patent/CN103229575B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265255A (en) * | 1997-06-04 | 2000-08-30 | 法国电信局 | Dynamic channel assignment method in cell communication network |
| CN1304221A (en) * | 1999-12-28 | 2001-07-18 | 朗迅科技公司 | Dynamic channel allocation of intelligance antenna |
| EP1168690A2 (en) * | 2000-06-26 | 2002-01-02 | Lucent Technologies Inc. | Method to dynamically determine interference and carrier-to-interference ratio during TDMA calls |
| CN101394660A (en) * | 2007-09-17 | 2009-03-25 | 华为技术有限公司 | Method and device for determining downlink sending mode |
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