CN102170657A - Method and equipment for determining subframe information - Google Patents
Method and equipment for determining subframe information Download PDFInfo
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- CN102170657A CN102170657A CN2011100766093A CN201110076609A CN102170657A CN 102170657 A CN102170657 A CN 102170657A CN 2011100766093 A CN2011100766093 A CN 2011100766093A CN 201110076609 A CN201110076609 A CN 201110076609A CN 102170657 A CN102170657 A CN 102170657A
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Abstract
The embodiment of the invention relates to the technical field of wireless communication, in particular to a method and equipment for determining subframe information, which are used for acquiring subframe information of an adjacent cell when the uplink and the downlink business proportion demands in a cell are in dynamic change. The method provided by the embodiment of the invention comprises the following steps: measuring a signal of equipment at one side of an adjacent cell in each subframe in a subframe collection, and determining the measurement result, wherein the subframe in the subframe collection is determined by the subframe type of a subframe in a wireless subframe configured in the area, the subframe type in the wireless subframe comprises a variable subframe, and the variable subframe is a subframe with variable transmission direction; and determining the subframe information of the same subframe in the adjacent cell, or reporting the measurement result to an upper layer network node to inform the upper layer network node to determine the subframe information of the same subframe in the adjacent cell according to the measurement result. By adopting the embodiment of the invention, when the uplink and the downlink business proportion demands in the cell are in the dynamic change, the subframe information of the adjacent cell can be acquired, so that the system property can be improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method and apparatus of definite sub-frame information.
Background technology
Basic duplex mode for the cellular system employing, TDD (Time division duplex, time division duplex) pattern is meant that uplink downlink uses same working band, on the different time intervals, carry out the transmission of uplink and downlink signals, have between the up-downgoing protection at interval (Guard Period, GP); FDD (Frequency division duplex; Frequency Division Duplexing (FDD)) pattern refers to that then uplink downlink uses different working bands; can when same, be engraved in the transmission of carrying out uplink and downlink signals on the different frequency carriers, have between the up-downgoing protection bandwidth (Guard Band, GB).
The frame structure of LTE (Long Term Evolution, Long Term Evolution) TDD system is complicated slightly, and shown in Figure 1A, a radio frames length is 10ms, comprises special subframe and conventional subframe two classes totally 10 subframes, and each subframe is 1ms.Special subframe is divided into 3 subframe: DwPTS (Downlink Pilot Time Slot, the descending pilot frequency subframe) is used to transmit PSS (Primary Synchronization Signal, master sync signal), PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel), PHICH (Physical HARQ Indication Channel, the automatic request retransmission indicating channel of physical mixed), PCFICH (Physical Control Format Indication Channel, Physical Control Format Indicator Channel), PDSCH (Physical Downlink Shared Channel, physical down link sharing channel) etc.; GP be used between descending and up protection at interval); UpPTS (Uplink Pilot Time Slot, ascending pilot frequency subframe) is used for transmitting SRS (Sounding Reference Signal surveys and uses reference signal), PRACH (Physical Random Access Channel, Physical Random Access Channel) etc.Conventional subframe comprises sub-frame of uplink and descending sub frame, is used to transmit up/down control channel and business datum etc.Wherein in a radio frames, can dispose two special subframes (being positioned at subframe 1 and 6), also can dispose a special subframe (being positioned at subframe 1).Always as downlink transfer, the UpPTS subframe in subframe 2 and the special subframe always is used for uplink to DwPTS subframe in subframe 0 and subframe 5 and the special subframe, and other subframes can be configured to as uplink or downlink transfer according to needs.
Identical frequency resource is used in the uplink and downlink transmission in the TDD system, transmits uplink/downlink signals on different subframes.In common TDD system, comprise TD-SCDMA (TD SDMA) system of 3G and the TD-LTE system of 4G, the division of uplink and downlink subframe is static or semi-static, and common way is to determine the division of ascending-descending subframes ratio according to cell type and business proportion roughly and remain unchanged in network planning process.This is comparatively simple way under the background of the big covering of macrocell, and also comparatively effective.And along with technical development, increasing Microcell (Pico cell), Home eNodeB low power base station such as (Home NodeB) is used to provide the little covering of part by deployment, in this class sub-district, number of users is less, and the customer service changes in demand is bigger, so there is situation about dynamically changing in the up-downgoing business proportion demand of sub-district.
In real system,, then can cause the cross time-slot of neighbor cell to disturb if different sub-districts is provided with different ascending-descending subframes configurations.Shown in Figure 1B, macrocell is on the time slot that sends downstream signal, femto cell (Femto cell) is used for upward signal and receives, then occur between two sub-districts: base-station, base-station disturbs, the femto base station directly receives the downstream signal of Macro base station, to have a strong impact on the quality that the femto base station receives L-UE (Local UE, local UE) upward signal.
The neighbor cell here can be geographical sub-district (shown in Figure 1B) of the adjacent same TDD carrier wave of use, or geography is gone up sub-district (shown in Fig. 1 C) overlapping or that use adjacent TDD carrier wave.
In sum, when the up-downgoing business proportion demand of sub-district dynamically changes at present, also there is not a kind of scheme of knowing the adjacent area sub-frame information.
Summary of the invention
The method and apparatus of a kind of definite sub-frame information that the embodiment of the invention provides when dynamically changing in order to the up-downgoing business proportion demand in the sub-district, can be known the sub-frame information of adjacent area.
The method of a kind of definite sub-frame information that the embodiment of the invention provides comprises:
In each subframe in the subframe set signal of adjacent subzone network side apparatus is measured, determine measurement result, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
Determine the sub-frame information of same subframe in the adjacent sub-district or measurement result reported the upper layer network node that notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result according to measurement result.
The equipment of a kind of definite sub-frame information that the embodiment of the invention provides comprises:
Measurement module, each subframe that is used in the subframe set is measured the signal of adjacent subzone network side apparatus, determine measurement result, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
Processing module is used for determining the sub-frame information of the same subframe in adjacent sub-district or measurement result being reported the upper layer network node according to measurement result, and notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result.
The system of a kind of definite sub-frame information that the embodiment of the invention provides comprises:
Network equipment, each subframe that is used in the subframe set is measured the signal of adjacent subzone network side apparatus, determine measurement result, measurement result is reported the upper layer network node, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
The upper layer network node device is used for determining according to measurement result the sub-frame information of the same subframe in adjacent sub-district.
Since the embodiment of the invention according in each subframe in the subframe set to the measurement result of the signal measurement of adjacent subzone network side apparatus, determine the sub-frame information of same subframe in the adjacent sub-district or measurement result is reported the upper layer network node, notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result, when thereby the up-downgoing business proportion demand in the sub-district dynamically changes, can know the sub-frame information of adjacent area, improve systematic function; Further, for avoiding the cross time-slot interference between the sub-district that foundation is provided.
Description of drawings
Figure 1A is a TD-LTE system frame structure schematic diagram;
Figure 1B cross time-slot when using identical TDD carrier wave disturbs schematic diagram;
Fig. 1 C cross time-slot when using adjacent TDD carrier wave disturbs schematic diagram;
Fig. 2 determines the method structural representation of sub-frame information for the embodiment of the invention;
Fig. 3 determines the device structure schematic diagram of sub-frame information for the embodiment of the invention;
Fig. 4 determines the system configuration schematic diagram of sub-frame information for the embodiment of the invention;
Fig. 5 is the embodiment of the invention schematic diagram that set is measured neighboring area signal based on subframe.
Embodiment
In the embodiment of the invention each subframe in the subframe set signal of adjacent subzone network side apparatus is measured, obtained measurement result, just can obtain the sub-frame information of same subframe in the adjacent sub-district according to measurement result.Owing to when the up-downgoing business proportion demand in the sub-district dynamically changes, can know the sub-frame information of adjacent area, thereby improve systematic function.
Wherein, the embodiment of the invention can be applied to (such as the TD-LTE system) in the TDD system, also can be applied to other needs dynamically to adjust in the system of subframe uplink-downlink configuration, for example TD-SCDMA system and follow-up evolution system thereof, WiMAX (Worldwide Interoperability for Microwave Access, micro-wave access global inter communication) system and follow-up evolution system thereof etc.
Below in conjunction with Figure of description the embodiment of the invention is described in further detail.
As shown in Figure 2, the embodiment of the invention determines that the method for sub-frame information comprises the following steps:
In step 201, each subframe in the subframe set signal of adjacent subzone network side apparatus is measured, determine measurement result, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the radio frames comprises variable subframe, variable subframe is the variable subframe of transmission direction (promptly can carry out as required can a dynamic-configuration, and it is descending to be such as current period that the up next cycle just might become).
Comprise subframe 4 such as subframe set, the measurement result that measures according to subframe 4 is determined the sub-frame information of subframe 4 in the adjacent sub-district.
Subframe type in the radio frames also has fixedly subframe (being the subframe that transmission direction can not change) except variable subframe.
Having only has variable subframe (comprising that all subframes all are that variable subframe or part subframe are variable subframes) in the radio frames, just be suitable for the embodiment of the invention.
Preferable, can also be before the step 201 to each sub-frame division subframe set.
Concrete, according to the subframe type in the radio frames of this cell configuration, be each the sub-frame division subframe set in each cycle; Or, be each the sub-frame division subframe set in each cycle according to the subframe set dividing mode of receiving from high level.
Preferable, if according to the subframe type in the radio frames of this cell configuration, be each the sub-frame division subframe set in each cycle, then can will distribute the identical variable sub-frame division of mould value in each cycle in a subframe set;
Wherein distribute the mould value to determine according to formula one:
X=N mod M........................... formula one;
X distributes the mould value, and N is a subframe numbers, and M is a cycle duration.
With a radio half frame (5ms) is the cycle to be divided into example:
The changeless subframe of neighbor cell configuration direction is 0,1,2,5,6,7 (being subframe numbering N mod 5=0,1,2 subframe); The subframe that the neighbor cell configuration direction may change is 3,4,8,9 (being subframe numbering N mod 5=3,4 subframe).
Can in each radio half frame, divide 2 subframe set according to the mode of formula one, promptly gather 1 subframe (comprising subframe 3 and 8) for subframe numbering N mod 5=3; And gather 2 subframes (comprising subframe 4 and 9) for subframe numbering N mod5=4.
The changeless subframe of neighbor cell configuration direction is 0,1,5,6 (being subframe numbering N mod 5=0,1 subframe); The subframe that the neighbor cell configuration direction may change is 2,3,4,7,8,9 (being subframe numbering N mod 5=2,3,4 subframe).
Can in each radio half frame, divide 3 subframe set according to the mode of formula one, promptly gather 1 subframe (comprising subframe 2 and 7) for subframe numbering N mod 5=2; Set 2 is the subframe (comprising subframe 3 and 8) of subframe numbering N mod 5=3; And gather 3 subframes (comprising subframe 4 and 9) for subframe numbering N mod 5=4.
Certainly, top formula is applicable to that not only cycle duration is the situation of 5ms, and other situations also are suitable for, and are the situations of radio frames integral multiple such as cycle duration.
If cycle duration is the situation of radio frames integral multiple, except adopting formula one, preferable a kind of mode is respectively as a subframe set with each variable subframe in each cycle.
With a radio frames (10ms) is the cycle to be divided into example:
The changeless subframe of neighbor cell configuration direction is 0,1,2,5,6; The subframe that the neighbor cell configuration direction may change is 3,4,7,8,9.
Can determine the distribution mould value of each subframe, directly the quantity of the subframe that may change according to the neighbor cell configuration direction is divided the subframe set.In each radio frames, divide 5 subframe set:
Set 3 is numbered 7 subframe for subframe in each radio frames;
Set 4 is numbered 8 subframe for subframe in each radio frames;
Set 5 is numbered 9 subframe for subframe in each radio frames.
If according to the subframe set dividing mode of receiving from high level, be each the sub-frame division subframe set in each cycle, then high-rise subframe set dividing mode can be identical with top subframe set dividing mode, also can adopt other dividing mode, but need determine according to the subframe type of subframe in the radio frames of this cell configuration.Such as in the one-period being a subframe set with the individual variable sub-frame division of preceding Z (Z is a positive integer), all the other variable sub-frame division are gathered for another subframe; Can also the odd number sub-frame division be a subframe set, the even number sub-frame division be another subframe set.Specifically can determine and notice by high level as required; Can also directly concrete dividing condition be notified to network equipment, in such as which variable sub-frame division gathering to which subframe by high level.
Preferable, in the step 201, to the signal measurement of adjacent subzone network side apparatus the time, can adopt RSRP (Reference signal received power, Reference Signal Received Power) metering system, measure the CRS (Cell-specific reference signals, the exclusive pilot signal in sub-district) of adjacent subzone network side apparatus in each subframe in the subframe set.
Preferable, before measuring, whether what can check adjacent subzone network side apparatus and the use of this sub-district earlier is same carrier wave, if then measure on the current carrier wave in this sub-district; If not, then jump on the current carrier wave in corresponding adjacent sub-district, on the current carrier wave in adjacent sub-district, measure.
Preferable, before measuring, can carry out time synchronized with adjacent sub-district earlier, and obtain the cell identity information of adjacent sub-district.
Concrete, if measuring process is finished when a network equipment start, for example network equipment sub-frame configuration of self when start is set to D (descending) S (special) U (up) UUDSUUU, on corresponding subframe set or subframe set group, carry out the measurement of each neighbor cell signal then, think that then a network equipment set up time synchronized with each neighbor cell, and known the Cell id information of each neighbor cell;
If measuring process is at the sub-frame of uplink or MBSFN (the Multimedia Broadcast multicast service Single Frequency Network of the sub-district that a network equipment has been set up, the multimedia broadcast multi-broadcasting business Single Frequency Network) carries out in the data area of subframe, think that then a base station is keeping the time synchronized with each neighbor cell, and known the Cell id information of each neighbor cell.
Accordingly, according to the cell identity information of the adjacent sub-district that obtains, in each subframe in the subframe set signal of adjacent subzone network side apparatus is measured.
In order to improve the reliability of measurement result, can divide the difference in cycle according to radio frames, subframe set group is formed in more than one subframe set, and a plurality of subframe set on a subframe set group are measured accordingly and measurement result are carried out smoothing processing and are used for judgement then.
Concrete, in the step 201, after in each subframe in the set of each subframe the signal measurement of adjacent subzone network side apparatus being determined measurement result, the definite measurement result of each subframe set that belongs in the same subframe set group is carried out smoothing processing, obtain measurement result;
Accordingly, in the step 202,, determine the sub-frame information of same subframe in the adjacent sub-district according to the measurement result after the smoothing processing; Or the measurement result after the smoothing processing reported the upper layer network node, the measurement result of notice upper layer network node after according to smoothing processing determined the sub-frame information of same subframe in the adjacent sub-district.
Preferable, when subframe set group was divided in each subframe set, the subframe set that can be contained same sub a plurality of cycles was as a subframe set group; Or, the subframe set is divided into subframe set group according to the subframe set group dividing mode of receiving from high level.
If adopt a plurality of cycles are contained the mode of the subframe set of same sub as a subframe set group, specifically what cycles are divided into subframe set group regulation or definite by high level in agreement as required.
Such as: the division cycle is 5ms, then the corresponding identical subframe in subframe numbering mould 5 backs of each subframe set in the individual radio half frame of Y (Y is the positive integer greater than 1, can determine based on the mode of agreement agreement or network side configuration) is constituted a subframe set group.For example divided 2 subframe set (subframe of N mod 5=3 and N mod 5=4) in each radio half frame, and M=4, then 4 subframes with N mod 5=3 in continuous 4 radio half frame constitute subframe set group 1; 4 subframes of N mod 5=4 constitute subframe set group 2 in same continuous 4 radio half frame;
Such as: the division cycle is 10ms, then the corresponding identical subframe of subframe numbering of each subframe set in the individual radio frames of L (L is the positive integer greater than 1, can determine based on the mode of agreement agreement or network side configuration) is constituted a subframe set group.For example divided 5 subframe set (be respectively and be numbered 3,4,7,8,9 subframe) in each radio frames, and L=4, then be that 4 subframes of 3 constitute subframe set group 1 with continuous 4 radio frames neutron frame numbers; Same continuous 4 radio half frame neutron frame numbers are 4 subframes formation subframe set groups 2 of 4, form 5 subframe set groups with this type of, comprise 4 subframes in each group.
In concrete enforcement, subframe set group is divided in each subframe set can divide at once in definite each subframe set back, also can after the measurement result of definite each subframe set, divide at once.
If according to the subframe set group dividing mode of receiving from high level, the subframe set is divided into subframe set group, then Gao Ceng subframe set group dividing mode can be identical with top subframe set group dividing mode, also can adopt other dividing mode.Such as in the certain hour the individual subframe set of preceding P (P is a positive integer) being divided into a subframe set group, all the other subframe set are divided into another subframe set group; Can also directly concrete dividing condition be notified to network equipment, be divided in which subframe set group such as which subframe set by high level.
The high level here can adopt the dividing mode that shows signaling method notice subframe set group.
In the step 202, it specifically is the sub-frame information of directly determining same subframe in the adjacent sub-district according to measurement result, still measurement result is reported the upper layer network node is determined same subframe in the adjacent sub-district according to measurement result by the upper layer network node sub-frame information, can in agreement, stipulate as required to adopt which kind of mode by the high level notice.
When determining the sub-frame information (comprise upper layer network node determine the sub-frame information of same subframe in the adjacent sub-district according to measurement result) of same subframe in the adjacent sub-district according to measurement result, the threshold value of measurement result and setting can be compared, determine the sub-frame information of same subframe in the adjacent sub-district according to comparative result.
The concrete threshold value quantity of setting can be provided with one or more as required, and sub-frame information includes but not limited to one or more in the following message:
Whether subframe transmission direction, subframe have interference.
The quantity of threshold value and the sub-frame information after the comparison are what can be determined by specific implementation, experience.
Such as only setting a threshold value, threshold value with measurement result and setting compares then, if greater than threshold value, confirm that then same subframe produces network equipment transmitting downstream signal in same subframe of cross interference or adjacent sub-district in the adjacent sub-district to this sub-district.
Such as only setting two threshold values 1 and 2, and threshold value 1 is less than or equal to threshold value 2, and the threshold value 1 of measurement result and setting is compared, if less than threshold value 1, then confirms not at this subframe transmitting downstream signal; Even perhaps launched downstream signal but this sub-district do not produced any cross interference.If greater than threshold value 2, confirm that then same subframe produces network equipment transmitting downstream signal in same subframe of cross interference or adjacent sub-district in the adjacent sub-district to this sub-district.If measurement result is avoided in order to disturb better between threshold value 1 and threshold value 2, can carry out with measured value greater than thresholding 2 identical operations; Perhaps in order to utilize sub-frame resources better, can carry out with measured value less than thresholding 1 identical operations.
If set more threshold value, concrete comparative result can be set according to realization and experience.
Wherein, the executive agent of embodiment of the invention method is a network equipment.Network equipment can be base station (such as a macro base station, little base station, Home eNodeB etc.), also can be RN (relaying) equipment, can also be other network equipment.
Based on same inventive concept, the equipment and the system of definite sub-frame information also are provided in the embodiment of the invention, because this equipment is similar to the method for definite sub-frame information with the principle that system deals with problems, so the enforcement of this equipment and system can repeat part and repeat no more referring to the enforcement of method.
As shown in Figure 3, the embodiment of the invention determines that the equipment of sub-frame information comprises: measurement module 300 and processing module 310.
Preferable, measurement module also is used for:
Determine before the measurement result,, be each the sub-frame division subframe set in each cycle according to the subframe type in the radio frames of this cell configuration; Or before definite measurement result,, be each the sub-frame division subframe set in each cycle according to the subframe set dividing mode of receiving from high level.
Preferable, measurement module specifically is used for:
To distribute the identical variable sub-frame division of mould value in each cycle in a subframe set;
Wherein distribute the mould value to determine according to following formula:
X=N mod M; X distributes the mould value, and N is a subframe numbers, and M is a cycle duration.
Preferable, measurement module specifically is used for:
When cycle duration equals the integral multiple of a radio frames duration, each variable subframe in each cycle is gathered as a subframe respectively.
Preferable, measurement module specifically is used for:
If identical carrier wave is used with this sub-district in adjacent sub-district, on the current carrier wave in this sub-district, measure; If different carrier waves is used with this sub-district in adjacent sub-district, on the current carrier wave in adjacent sub-district, measure.
Preferable, measurement module also is used for:
Determine after the measurement result, determine before sub-frame information or the transmission measurement result measurement result that each subframe set in the subframe set group is determined to be carried out smoothing processing, obtain measurement result;
Processing module specifically is used for:
According to the measurement result after the smoothing processing, determine the sub-frame information of same subframe in the adjacent sub-district; Or the measurement result after the smoothing processing reported the upper layer network node, the measurement result of notice upper layer network node after according to smoothing processing determined the sub-frame information of same subframe in the adjacent sub-district.
Preferable, measurement module also is used for:
Carry out before the smoothing processing, a plurality of cycles are contained the subframe set of same sub as a subframe set group; Or after definite measurement result, carry out before the smoothing processing, according to the subframe set group dividing mode of receiving, the subframe set is divided into subframe set group from high level.
Preferable, measurement module specifically is used for:
Adopt the RSRP metering system, measure the CRS of adjacent subzone network side apparatus in each subframe in the subframe set.
Preferable, measurement module also is used for:
Carry out in each subframe in the subframe set carrying out time synchronized with adjacent sub-district, and obtaining the cell identity information of adjacent sub-district before the adjacent cell signal measurement.
Preferable, measurement module specifically is used for:
According to the cell identity information of the adjacent sub-district that obtains, in each subframe in the subframe set signal of adjacent subzone network side apparatus is measured.
Preferable, processing module specifically is used for:
The threshold value of measurement result and setting is compared, determine the sub-frame information of same subframe in the adjacent sub-district according to comparative result.
As shown in Figure 4, the embodiment of the invention determines that the system of sub-frame information comprises: network equipment 10 and upper layer network node device 20.
Network equipment 10, each subframe that is used in the subframe set is measured the signal of adjacent subzone network side apparatus, determine measurement result, measurement result is reported the upper layer network node, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction.
Upper layer network node device 20 is used for determining according to measurement result the sub-frame information of the same subframe in adjacent sub-district.
Wherein, the network equipment of the embodiment of the invention can be base station (such as a macro base station, little base station, Home eNodeB etc.), also can be RN (relaying) equipment, can also be other network equipment.
The present invention will be described to have set a threshold value below and be example, and a threshold value of the threshold value of other quantity and setting is similar, does not repeat them here.
As shown in Figure 5, the embodiment of the invention is gathered existing 1 Macro base station and 1 femto base station start in the geographic area shown in the schematic diagram that neighboring area signal is measured based on subframe, wherein the TDD sub-frame configuration of Cai Yonging is respectively Macro cell DSUUD-DSUUD, femto cell 1 DSUDD-DSUD.Femto base station 2 starts this moment are DSUUU-DSUUU with the sub-frame configuration of this sub-district, measure in 3 subframes set in each radio half frame, promptly
Subframe set 1 is the subframe of subframe numbering N mod 5=2;
Subframe set 2 is the subframe of subframe numbering N mod 5=3;
Subframe set 3 is the subframe of subframe numbering N mod 5=4.
The RSRP that measures Macro cell and femto cell 1 in subframe set 1 is lower than default thresholding 1, judges that then Macro cell and femto cell 1 do not send downstream signal on the subframe of set 1 correspondence; The RSRP that measures Macro cell in set 2 is lower than default thresholding 1, the RSRP of femto cell 1 is higher than default thresholding 1 simultaneously, judge that then Macro cell does not send downstream signal on the subframe of set 2 correspondences, and femto cell 1 has launched downstream signal on corresponding subframe; By that analogy, thus judgement obtains the sub-frame information of Macro cell and femto cell1.
Be lower than default thresholding 1 such as the measured value that transmits of measuring certain adjacent sub-district on a subframe set or the subframe set group, can think that then this neighbour sub-district is not at this subframe transmitting downstream signal; Even perhaps launched downstream signal but this sub-district is not produced any cross interference, also can be similar to and think not transmitting downstream signal of adjacent sub-district.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Since the embodiment of the invention according in each subframe in the subframe set to the measurement result of the signal measurement of adjacent subzone network side apparatus, determine the sub-frame information of same subframe in the adjacent sub-district or measurement result is reported the upper layer network node, notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result, when thereby the up-downgoing business proportion demand in the sub-district dynamically changes, can know the sub-frame information of adjacent area, improve systematic function; Further, for avoiding the cross time-slot interference between the sub-district that foundation is provided.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (23)
1. the method for a definite sub-frame information is characterized in that, this method comprises:
In each subframe in the subframe set signal of adjacent subzone network side apparatus is measured, determine measurement result, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
Determine the sub-frame information of same subframe in the adjacent sub-district or measurement result reported the upper layer network node that notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result according to measurement result.
2. the method for claim 1 is characterized in that, also comprises before described definite measurement result:
According to the subframe type in the radio frames of this cell configuration, be each the sub-frame division subframe set in each cycle; Or
According to the subframe set dividing mode of receiving, be each the sub-frame division subframe set in each cycle from high level.
3. method as claimed in claim 2 is characterized in that, the described set for each the sub-frame division subframe in each cycle comprises:
To distribute the identical variable sub-frame division of mould value in each cycle in a subframe set;
Wherein said distribution mould value is determined according to following formula:
X=N mod M; X distributes the mould value, and N is a subframe numbers, and M is a cycle duration.
4. method as claimed in claim 2 is characterized in that described cycle duration equals the integral multiple of a radio frames duration;
The described set for each the sub-frame division subframe in each cycle comprises:
Each variable subframe in each cycle is gathered as a subframe respectively.
5. the method for claim 1 is characterized in that, describedly carries out adjacent cell signal measurement and comprises:
If identical carrier wave is used with this sub-district in adjacent sub-district, on the current carrier wave in this sub-district, measure;
If different carrier waves is used with this sub-district in adjacent sub-district, on the current carrier wave in adjacent sub-district, measure.
6. the method for claim 1 is characterized in that, after described definite measurement result, also comprises before determining sub-frame information or sending measurement result:
The measurement result that each subframe set in the subframe set group is determined is carried out smoothing processing, obtain measurement result;
Described definite sub-frame information comprises:
According to the measurement result after the smoothing processing, determine the sub-frame information of same subframe in the adjacent sub-district;
Described reporting measurement result comprises:
Measurement result after the smoothing processing is reported the upper layer network node, and the measurement result of notice upper layer network node after according to smoothing processing determined the sub-frame information of same subframe in the adjacent sub-district.
7. method as claimed in claim 6 is characterized in that, carries out also comprising before the smoothing processing:
A plurality of cycles are contained the subframe set of same sub as a subframe set group; Or
According to the subframe set group dividing mode of receiving, the subframe set is divided into subframe set group from high level.
8. as the arbitrary described method of claim 1～7, it is characterized in that, describedly carry out adjacent cell signal measurement and comprise:
Adopt Reference Signal Received Power RSRP metering system, measure the exclusive pilot signal CRS in sub-district of adjacent subzone network side apparatus in each subframe in the subframe set.
9. as the arbitrary described method of claim 1～7, it is characterized in that, carry out in described each subframe in the subframe set also comprising before the adjacent cell signal measurement:
Carry out time synchronized with described adjacent sub-district, and obtain the cell identity information of adjacent sub-district.
10. method as claimed in claim 9 is characterized in that, describedly carries out adjacent cell signal measurement and comprises:
According to the cell identity information of the adjacent sub-district that obtains, in each subframe in the subframe set signal of adjacent subzone network side apparatus is measured.
11. as the arbitrary described method of claim 1～7, it is characterized in that, describedly determine that according to measurement result the sub-frame information of same subframe in the adjacent sub-district comprises:
The threshold value of measurement result and setting is compared, determine the sub-frame information of same subframe in the adjacent sub-district according to comparative result.
12. the equipment of a definite sub-frame information is characterized in that, this equipment comprises:
Measurement module, each subframe that is used in the subframe set is measured the signal of adjacent subzone network side apparatus, determine measurement result, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
Processing module is used for determining the sub-frame information of the same subframe in adjacent sub-district or measurement result being reported the upper layer network node according to measurement result, and notice upper layer network node is determined the sub-frame information of same subframe in the adjacent sub-district according to measurement result.
13. equipment as claimed in claim 12 is characterized in that, described measurement module also is used for:
Determine before the measurement result,, be each the sub-frame division subframe set in each cycle according to the subframe type in the radio frames of this cell configuration; Or before definite measurement result,, be each the sub-frame division subframe set in each cycle according to the subframe set dividing mode of receiving from high level.
14. equipment as claimed in claim 13 is characterized in that, described measurement module specifically is used for:
To distribute the identical variable sub-frame division of mould value in each cycle in a subframe set;
Wherein said distribution mould value is determined according to following formula:
X=N mod M; X distributes the mould value, and N is a subframe numbers, and M is a cycle duration.
15. equipment as claimed in claim 13 is characterized in that, described measurement module specifically is used for:
When described cycle duration equals the integral multiple of a radio frames duration, each variable subframe in each cycle is gathered as a subframe respectively.
16. equipment as claimed in claim 12 is characterized in that, described measurement module specifically is used for:
If identical carrier wave is used with this sub-district in adjacent sub-district, on the current carrier wave in this sub-district, measure; If different carrier waves is used with this sub-district in adjacent sub-district, on the current carrier wave in adjacent sub-district, measure.
17. equipment as claimed in claim 12 is characterized in that, described measurement module also is used for:
Determine after the measurement result, determine before sub-frame information or the transmission measurement result measurement result that each subframe set in the subframe set group is determined to be carried out smoothing processing, obtain measurement result;
Described processing module specifically is used for:
According to the measurement result after the smoothing processing, determine the sub-frame information of same subframe in the adjacent sub-district; Or the measurement result after the smoothing processing reported the upper layer network node, the measurement result of notice upper layer network node after according to smoothing processing determined the sub-frame information of same subframe in the adjacent sub-district.
18. equipment as claimed in claim 17 is characterized in that, described measurement module also is used for:
Carry out before the smoothing processing, a plurality of cycles are contained the subframe set of same sub as a subframe set group; Or after definite measurement result, carry out before the smoothing processing, according to the subframe set group dividing mode of receiving, the subframe set is divided into subframe set group from high level.
19., it is characterized in that described measurement module specifically is used for as the arbitrary described equipment of claim 12～18:
Adopt the RSRP metering system, measure the CRS of adjacent subzone network side apparatus in each subframe in the subframe set.
20., it is characterized in that described measurement module also is used for as the arbitrary described equipment of claim 12～18:
Carry out in each subframe in the subframe set carrying out time synchronized with described adjacent sub-district, and obtaining the cell identity information of adjacent sub-district before the adjacent cell signal measurement.
21. equipment as claimed in claim 20 is characterized in that, described measurement module specifically is used for:
According to the cell identity information of the adjacent sub-district that obtains, in each subframe in the subframe set signal of adjacent subzone network side apparatus is measured.
22., it is characterized in that described processing module specifically is used for as the arbitrary described equipment of claim 12～18:
The threshold value of measurement result and setting is compared, determine the sub-frame information of same subframe in the adjacent sub-district according to comparative result.
23. the system of a definite sub-frame information is characterized in that, this system comprises:
Network equipment, each subframe that is used in the subframe set is measured the signal of adjacent subzone network side apparatus, determine measurement result, measurement result is reported the upper layer network node, wherein the subframe in the subframe set is to determine according to the subframe type of subframe in the radio frames of this cell configuration, subframe type in the described radio frames comprises variable subframe, and variable subframe is the variable subframe of transmission direction;
The upper layer network node device is used for determining according to measurement result the sub-frame information of the same subframe in adjacent sub-district.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110076609.3A CN102170657B (en) | 2011-03-29 | 2011-03-29 | Method and equipment for determining subframe information |
| PCT/CN2012/073062 WO2012130125A1 (en) | 2011-03-29 | 2012-03-26 | Method and apparatus for determining sub-frame information |
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| CN201110076609.3A CN102170657B (en) | 2011-03-29 | 2011-03-29 | Method and equipment for determining subframe information |
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| CN102170657B CN102170657B (en) | 2014-09-10 |
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| WO (1) | WO2012130125A1 (en) |
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Also Published As
| Publication number | Publication date |
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| WO2012130125A1 (en) | 2012-10-04 |
| CN102170657B (en) | 2014-09-10 |
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