CN102075947A - Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance - Google Patents
Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance Download PDFInfo
- Publication number
- CN102075947A CN102075947A CN2011100050346A CN201110005034A CN102075947A CN 102075947 A CN102075947 A CN 102075947A CN 2011100050346 A CN2011100050346 A CN 2011100050346A CN 201110005034 A CN201110005034 A CN 201110005034A CN 102075947 A CN102075947 A CN 102075947A
- Authority
- CN
- China
- Prior art keywords
- district
- sub
- probability
- interference
- pdcch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
Abstract
The invention discloses a cell identification (ID) planning method and device improving physical downlink control channel (PDCCH) performance. The method comprises the following steps: acquiring resource positions of set physical channels and set signals determined by each cell ID in a preselected cell ID, wherein the set physical channels comprise public domain PDCCHs; as for the combination of two cell IDs, namely I and J, acquiring the interference probability of the combination according to the probability of collision between the resource positions of the public domain PDCCHs determined by the cell IDs and the resource positions of the set physical channels and set signals determined by the opposite side cell ID, wherein the I and the J are different; distributing cell IDs to physical cells of the cell IDs which wait for distribution according to the interference probability. According to the invention, the probability that the PDCCHs are be influenced by neighbor strong interference is reduced, so that the SIR (signal-to-inference ratio) distribution of the PDCCHs is improved.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of sub-district ID planing method and device of the PDCCH of raising channel performance.
Background technology
LTE (Long Term Evolution, Long Term Evolution) system descending has adopted OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology, the problem of disturbing in the sub-district is resolved substantially, but as cost, its presence of intercell interference (ICI, Inter-Cell Interference) is even more serious than CDMA (Code Division Multiple Access, code division multiple access inserts) system.
In order to address this problem, in the process of each physical channel design, adopt various technology to avoid the interference of interchannel between neighbor cell as possible, an important method is exactly that the resource mapping relations of each physical channel and sub-district ID (sign) bind one by one.In the LTE system standard, the distribution of numerous physical layer resources and sub-district ID binding so the planning of sub-district ID directly has influence on the occupation condition of each physical channel, are subjected to annoyance level thereby have influence on each physical channel.Just because of the binding one by one of mechanism such as the mapping of sub-district ID and TD-LTE system resource, sign indicating number resource distribution and frequency hopping etc., being configured in of sub-district ID seems particularly important in the identical networking.
Good sub-district ID programme should be taken all factors into consideration the constraint of each physical channel, can improve the overall performance of LTE system greatly; On the contrary, very poor sub-district ID programme can make the performance imbalance of each physical channel, thereby short slab occurs, badly influences the systematic function of whole network.
Sub-district ID is mainly reflected in two aspects to the influence of " physical resource mapping ":
1) sub-district ID will have influence on sub-district PCFICH (Physical Control Format IndicatorChannel, Physical Control Format Indicator Channel) and PHICH (Physical HARQ indicatorChannel, Physical HARQ Indicator Channel) physical resource position, thereby have influence on the remaining physical resource position that can distribute to PDCCH (physical downlink control channel, Physical Downlink Control Channel);
2) the PDCCH resource adopts with CCE (Control Channel Element, the control channel unit) (comprises 9 REG (Resource Element Group, resource unit group)) be least unit, process is interweaving of unit with REG, after the particular cycle skew of sub-district, mode according to frequency domain after the first time domain is mapped on the physics REG resource again, and in this process, sub-district ID can directly influence side-play amount.
In the ID programme of present existing sub-district, more be to consider RS (Reference Signal, reference signal), PSS (Primary Synchronous Signal, master sync signal) and SSS (SecondarySynchronous Signal, auxiliary synchronous signals) etc. to the constraint of sub-district ID planning, thereby make RS, PSS, SSS channel/signal reduce the interference from the adjacent area as far as possible.
In general, the concrete steps of sub-district ID planning are divided into following three steps:
1) considers the constraint of RS: require the skew between the sub-district ID of adjacent physical area to sub-district ID planning
Different;
2) consider PSS, SSS channel constraint: require the skew between the sub-district ID of adjacent physical area to sub-district ID planning
Different;
3) consider the constraint of PRACH (Physical Random Access Channel, Physical Random Access Channel) to sub-district ID planning: the sub-district ID difference that requires adjacent physical area promptly is positioned at same family in 30.
According to above sub-district ID constraint to adjacent physical area, for carrying out sub-district ID, distributes the physical area of sub-district ID to be allocated, and make the sub-district ID of each adjacent physical area satisfy above-mentioned constraint as far as possible, thereby obtain final sub-district ID programme.
As seen, the main consideration of existing sub-district ID planning is the influence of sub-district ID to RS, PSS, SSS and PRACH channel.Its rule mainly is mould 3 differences between the sub-district ID of adjacent physical area, and the sub-district ID difference of adjacent physical area divided by after 30 to round the back downwards identical.Such scheme has been ignored the influence of sub-district ID to the PDCCH channel performance.Can find with respect to PHICH, PDSCH and PCFICH channel that at link simulation and system emulation the performance of PDCCH channel is bottleneck, and differ when being 1 the non-constant of the performance of PDCCH as the sub-district of adjacent physical area ID.Yet in scheme before owing to consider sub-district ID planning influence, so the sub-district ID difference of adjacent physical area is that 1 situation is easy to occur, and that is to say, in the programme before, can relatively seriously influence the performance of PDCCH to PDCCH.
Summary of the invention
The invention provides a kind of cell ID ID planing method and device that improves the physical downlink control channel PDCCH performance,, be subjected to the strongly disturbing probability in adjacent area to reduce the PDCCH channel in order to optimize existing sub-district ID programme.
The invention provides a kind of cell ID ID planing method that improves the physical downlink control channel PDCCH performance, comprising:
Obtain the resource location by determined setting physical channel of each sub-district ID and setting signal among the pre-candidate cell ID, described setting physical channel comprises PD PDCCH;
Be respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality;
According to the probability of interference of all combinations, be each physical area distribution sub-district ID of sub-district ID to be allocated.
The present invention also provides a kind of cell ID ID device for planning that improves the physical downlink control channel PDCCH performance, comprising:
The resource location acquiring unit is used for obtaining the resource location by determined setting physical channel of each sub-district ID of pre-candidate cell ID and setting signal, and described setting physical channel comprises PD PDCCH;
The combination interference probability determining unit, be used for being respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality;
Allocation units are used for the probability of interference according to all combinations, are each physical area distribution sub-district ID of sub-district ID to be allocated.
Utilize the cell ID ID planing method and the device of raising physical downlink control channel PDCCH performance provided by the invention, concrete following beneficial effect: can statistically reduce the PDCCH channel and be subjected to the strongly disturbing probability in adjacent area, thereby the SIR Signal to Interference plus Noise Ratio that improves the PDCCH channel distributes, and then the demodulation performance of raising PDCCH channel, effectively improve the user capacity of PDCCH channel, thereby improve the systematic function of whole network.
Description of drawings
Fig. 1 is the cell ID ID planing method flow chart of raising physical downlink control channel PDCCH performance provided by the invention;
Fig. 2 is subjected to the probability of adjacent area strong jamming RE for sub-district 0 PD PDCCH in the embodiment of the invention;
Fig. 3 is a sub-district PD PDCCH mutual interference situation oscillogram all in the embodiment of the invention;
Fig. 4 is the graph of a relation of PD PDCCH and sub-district ID difference in the embodiment of the invention;
Fig. 5 is the graph of a relation of PD PDCCH strong jamming and sub-district ID difference in the embodiment of the invention;
Fig. 6 is the sub-district ID programme schematic diagram in the embodiment of the invention;
Fig. 7 is the structure drawing of device that improves the cell ID ID planning of physical downlink control channel PDCCH performance in the embodiment of the invention.
Embodiment
Illustrate in greater detail below in conjunction with the cell ID ID planing method and the device of drawings and Examples raising physical downlink control channel PDCCH performance provided by the invention.
PDCCH is divided into PD PDCCH that is used for all users broadcasting Downlink Control Information in the sub-district and the exclusive territory PDCCH of UE that sends Downlink Control Information to UE separately on the whole.
Generally speaking CRS (Cell Reference Signal; cell special reference), PCFICH, PHICH, shared RE (the Resource Element of PD PDCCH; Resource Unit) can adopt stronger transmitting power usually, so the present invention is referred to as strong jamming RE with these RE.
Among the strong jamming RE, the resource location of CRS, PCFICH, PHICH is determined by physical layer Cell ID fully.Under the condition that the REG of CRS, PCFICH, PHICH number Ng parameter, position are determined, the resource location of PD PDCCH is exactly the function of Cell ID and control domain symbolic number CFI; The resource location of the exclusive territory PDCCH of UE is equivalent to occur at random on the REG after The whole control territory deduction CRS, PCFICH, PHICH from the time, does not have rule to follow.
Therefore, reasonably Cell ID distributes the strong jamming RE that may make PD PDCCH avoid the adjacent area, reduces the interference level of PD PDCCH at cell edge.
For PD PDCCH, if transmission is broadcast, in order to guarantee to cover and transmission quality, the CCE grade of PD PDCCH is fixing usually, and such as 8, transmitted power is fixed and be bigger usually.So PD PDCCH is comparatively serious to the interference of adjacent area, PD PDCCH mainly is the strong jamming RE that how to hide the adjacent area in the consideration aspect the interference inhibition, guarantees the PD PDCCH performance of this sub-district with this.Because the resource location of PD PDCCH, CRS, PHICH, PCFICH all by sub-district ID decision, therefore can be considered to plan the strong jamming RE that hides the adjacent area by rational sub-district ID.
By last surface analysis, can find that sub-district ID will directly have influence on the physical resource position of PDCCH.So starting point of the present invention is to plan the interference that reduces as far as possible from the adjacent area by sub-district ID, thereby improve the performance of PDCCH.In first embodiment of the invention, the cell ID ID planing method of the raising physical downlink control channel PDCCH performance that is provided as described in Figure 1, comprising:
Step S101 obtains the resource location by determined setting physical channel of each sub-district ID and setting signal among the pre-candidate cell ID, and described setting physical channel comprises PD PDCCH;
Above-mentioned setting physical channel and setting signal are physical channel and the signal of binding one by one with sub-district ID, as are PD PDCCH, PCFICH, PHICH and CRS, RS etc.Preferably, set physical channel except that comprising PD PDCCH, other physical channel is to take the physical channel of strong jamming RE as being PCFICH and PHICH, and setting signal is the CRS that takies strong jamming RE.
Step S102, be respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality;
Step S103 according to the probability of interference of all combinations, is each physical area distribution sub-district ID of sub-district ID to be allocated.
The present invention is by making up all 2 sub-district ID among the pre-candidate cell ID, calculate the probability of interference of each combination, the PD PDCCH that can determine 2 sub-district ID correspondences in each combination is subjected to the other side's disturbed condition, thereby the PD PDCCH integral body that has reflected each combination is subjected to disturbed condition, be subjected to disturbed condition based on the resultant PD PDCCH that respectively makes up, the preferred sub-district ID that is disturbed in the low weight combination that uses is that two adjacent physical areas distribute ID, when carrying out the resource allocation of each physical channel and signal based on the sub-district ID that is distributed, can statistically reduce PD PDCCH and be subjected to the strongly disturbing probability in adjacent area, thereby the SIR Signal to Interference plus Noise Ratio that improves the PDCCH channel distributes, and then improves the demodulation performance of PDCCH channel.Utilize sub-district of the present invention ID programme can effectively improve the user capacity of PDCCH channel, thereby improve the systematic function of whole network.
Preferably, among the step S102, obtain the probability of interference of described combination in the present embodiment, specifically comprise:
1) obtains resource location, with collision probability P1 by the resource location of determined setting physical channel of J and setting signal by the determined PD PDCCH of I;
Therefore can obtain RE that the PD PDCCH of sub-district I takies and the collision probability P1 of adjacent area J strong jamming RE.
2) obtain by J the resource location of definite PD PDCCH, with collision probability P2 by the resource location of determined setting physical channel of I and setting signal;
Therefore can obtain RE that the PD PDCCH of sub-district J takies and the collision probability P2 of adjacent area I strong jamming RE.
3) with the mean value of P1 and P2 probability of interference as the described combination of forming by I and J.
Resource is a unit with the Resource Unit RE of preseting length, and preferably, the calculating of collision probability P1 in the following way in the present embodiment: obtain the shared RE sum N1 by the determined PD PDCCH of I; Obtain by among the shared RE of the determined PD PDCCH of I the identical number N2 of RE that occupies with setting physical channel of determining by J and setting signal; According to the ratio of N2 and N1, obtain collision probability P1; The calculating of P2 comprises: obtain the shared RE sum N1 ' by the determined PD PDCCH of J; Obtain by among the shared RE of the determined PD PDCCH of J the identical number N2 ' of RE that occupies with setting physical channel of determining by I and setting signal; According to the ratio of N2 ' and N1 ', obtain collision probability P2.
Preferably, among the step S103,, seek the sub-district ID that satisfies in the combination of setting constraints in the present embodiment, be physical area and adjacent cell allocation ID thereof by the probability of interference order from small to large of all combinations.The promptly preferred interior sub-district ID of the smaller combination of probability of interference that uses, above-mentioned setting constraints preferably includes current mechanism some constraintss for sub-district ID planning.
Preferably, carry out sub-district ID in the present embodiment and divide timing, at first obtain the neighbouring relations between each physical area of sub-district ID to be allocated in the whole network; Is starting point according to described neighbouring relations with the maximum physical area of adjacent number of cells, by the probability of interference order from small to large of all combinations, seeks the sub-district ID that satisfies in the combination of setting constraints, is physical area and adjacent cell allocation ID thereof.Can also obtain globally optimal solution in conjunction with some other optimized Algorithm, thereby obtain the sub-district ID programme of whole network.
Preferably, above-mentioned setting constraints comprises in the following constraints any or appoints a plurality of:
1) reference signal RS presses existing standard to the constraints of sub-district ID planning, requires the skew between the sub-district ID of adjacent physical area
Different;
2) master sync signal PSS and auxiliary synchronous signals SSS press existing standard to the constraints of sub-district ID planning, require the skew between the sub-district ID of adjacent physical area
Different;
3) Physical Random Access Channel PRACH presses existing standard to the constraints of sub-district ID planning, and the sub-district ID difference that requires adjacent physical area promptly is positioned at same family in 30;
4) whether Zu He probability of interference less than the constraints of setting thresholding, as less than 20%.
Therefore the planing method of the sub-district ID that provides of present embodiment, the significant performance that improves the PDCCH channel on the basis of sub-district ID programme performance that can be before taking into account.
In the embodiment of the invention two, improve the cell ID ID planing method of physical downlink control channel PDCCH performance, after the step S102 of embodiment one, also comprise the steps:
The probability of interference of the combination that sub-district ID difference is identical is done on average, obtains the probability of interference of different districts ID difference correspondence.
Among the step S103,, be each physical area distribution sub-district ID of sub-district ID to be allocated according to the probability of interference of pressing different districts ID difference correspondence.
Present embodiment travels through all sub-district ID combinations, and the probability of interference that the combination that difference is identical obtains is done on average; Characterize the probability of interference of sub-district ID difference correspondence when specific with the result after average; And the probability of interference of different districts ID difference correspondence done ordering, therefore can obtain the preferential use order of sub-district ID difference.Proof by experiment, when sub-district ID differs from one regularly, the ID of interfered cell is very little to the influence of probability of interference.Therefore, compare embodiment one and be and carry out sub-district ID in the combination in all obtaining and distribute, present embodiment is to be that physical area distributes sub-district ID according to sub-district ID difference, and the number range that obtains at last compares less, and spendable sub-district ID scope is bigger.
Preferably, in the present embodiment among the step S103, obtain the neighbouring relations between each physical area of sub-district ID to be allocated in the whole network; Is starting point according to described neighbouring relations with the maximum physical area of adjacent number of cells, press the probability of interference order from small to large of different districts ID difference correspondence, seek and satisfy the determined sub-district ID of difference that sets constraints, be physical area and adjacent cell allocation ID thereof.
Preferably, above-mentioned setting constraints comprises in the following constraints any or appoints a plurality of:
1) reference signal RS presses existing standard to the constraints of sub-district ID planning, requires the skew between the sub-district ID of adjacent physical area
Different;
2) master sync signal PSS and auxiliary synchronous signals SSS press existing standard to the constraints of sub-district ID planning, require the skew between the sub-district ID of adjacent physical area
Different;
3) Physical Random Access Channel PRACH presses existing standard to the constraints of sub-district ID planning, and the sub-district ID difference that requires adjacent physical area promptly is positioned at same family in 30;
4) whether the probability of interference of sub-district ID difference correspondence is less than the constraints of setting thresholding.
For further describing the solution of the present invention, below with 19 sub-districts, 3 sectors, the network topology of cloverleaf structure is an example, describes the present invention program's enforcement in detail, mainly comprises the steps:
As Fig. 2, Fig. 3, can see that the appearance of strong jamming probability presents certain periodically.
Because from system-level angle, sub-district I interfered cell J and sub-district J interfered cell I need to be taken all factors into consideration, so present embodiment has been done interfering with each other of sub-district I, J on average.Simultaneously Fig. 3 is shifted, makes abscissa become the poor of two sub-district ID.By can seeing among Fig. 4, when sub-district ID differs from one regularly, the ID of interfered cell is very little to the influence of strong jamming probability.
Step 2.1 further, is done the strong jamming probability of all sub-districts under the same cells ID difference on average, and promptly according to result shown in Figure 4, on identical abscissa, all ordinates are done on average, obtain result shown in Figure 5.
Step 2.2 changes system configuration parameter, obtains PD PDCCH is subjected under the different system parameter configuration strong jamming probability with the relation list between the two sub-district ID differences.
The system configuration parameter here comprises that Ng parameter, CFI etc. can influence the parameter of PD PDCCH resource location.
Step 2.3, with according to Ng=1/16, CFI=3, the symbolic number PHICH_duration=extended of PHICH are example, and the strong jamming probability is sorted, and obtain the priority orders of sub-district ID difference.
Step 2.4 is considered the restriction of RS signal to adjacent sub-district ID planning, removes the sub-district ID difference that difference mould 3 equals 0;
Step 2.5 is considered the restriction of PRACH frequency modulation pattern, removes difference greater than 30 sub-district ID value, the priority orders of the sub-district ID difference after obtaining reducing the scope.
Step 2.6, the result according to after the preceding step ordering if the strong jamming probability threshold is set at 20%, then preferentially selects sub-district ID difference in [14,10,13,11,8,16,7,17,5,19]] value in the scope uses.
Step 3, sub-district neighboring BS relationship according to theoretical model, and the adjacent area ID difference that step 2.6 obtains is chosen preferred value, with the center cell is starting point, take sub-district ID to be respectively that { 0,5,10} is basis combination, expand to the method for whole 19 sub-districts gradually, can obtain sub-district ID programme as shown in Figure 6
Major advantage of the present invention is to have considered that the PDCCH channel performance is limited often in the performance of real network, PD PDCCH channel is mainly to consider for the criterion that covers simultaneously, and adjustment on the power can be carried out according to the position of UE in exclusive territory, and under underloaded situation, the RE resource in exclusive territory may be by vacant.Comprehensive above reason, the present invention is a starting point with the combination of sub-district ID and the pass of PD PDCCH strong jamming probability, provides the programme of above-mentioned sub-district ID, has improved the performance of PDCCH.
The embodiment of the invention also provides a kind of cell ID ID device for planning that improves the physical downlink control channel PDCCH performance, as shown in Figure 7, comprise: resource location acquiring unit 701, be used for obtaining the resource location by determined setting physical channel of each sub-district ID of pre-candidate cell ID and setting signal, described setting physical channel comprises PD PDCCH; Combination interference probability determining unit 702, be used for being respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality; Allocation units 703 are used for the probability of interference according to all combinations, are each physical area distribution sub-district ID of sub-district ID to be allocated.
Preferably, described combination interference probability determining unit 702 specifically comprises: the neighbouring relations acquiring unit is used for obtaining the neighbouring relations between each physical area of whole network sub-district ID to be allocated; The order assignment unit, being used for according to described neighbouring relations is starting point with the maximum physical area of adjacent number of cells, according to the probability of interference of all combinations, is each physical area distribution sub-district ID of sub-district ID to be allocated.
Preferably, allocation units 703 specifically are used for the probability of interference order from small to large by all combinations, seek the sub-district ID that satisfies in the combination of setting constraints, are physical area and adjacent cell allocation ID thereof.
Preferably, this device also comprises: difference probability of interference determining unit 702 ', and the probability of interference that is used for the combination that sub-district ID difference is identical is done on average, obtains the probability of interference of different districts ID difference correspondence; Described allocation units 703 specifically are used for according to the probability of interference by different districts ID difference correspondence, are each physical area distribution sub-district ID of sub-district ID to be allocated.
Preferably, allocation units 703 specifically are used for the probability of interference order from small to large by different districts ID difference correspondence, seek and satisfy the determined sub-district ID of difference that sets constraints, are physical area and adjacent cell allocation ID thereof.
Preferably, the setting constraints of 703 foundations of allocation units comprises in the following constraints any or appoints a plurality of: reference signal RS is to the constraints of sub-district ID planning; Master sync signal PSS and auxiliary synchronous signals SSS are to the constraints of sub-district ID planning; Physical Random Access Channel PRACH is to the constraints of sub-district ID planning; Whether the probability of interference of combination or the probability of interference of sub-district ID difference correspondence be less than the constraints of setting thresholding.
Preferably, combination interference probability determining unit 702 specifically comprises: the first collision probability acquiring unit 702a, be used to obtain resource location, with collision probability P1 by the resource location of determined setting physical channel of J and setting signal by the determined PD PDCCH of I; The second collision probability acquiring unit 702b, be used to obtain by J the resource location of definite PD PDCCH, with collision probability P2 by the resource location of determined setting physical channel of I and setting signal; Average acquiring unit 702c is used for the mean value of P1 and the P2 probability of interference as described combination.
Preferably, the described first collision probability acquiring unit specifically comprises: the first total acquiring unit is used to obtain the shared RE sum N1 by the determined PD PDCCH of I; The first Collision Number acquiring unit is used for obtaining the shared RE by the determined PD PDCCH of I, the identical number N2 of RE that occupies with setting physical channel of being determined by J and setting signal; First computing unit is used for the ratio according to N2 and N1, obtains collision probability P1.
The described second collision probability acquiring unit specifically comprises: the second total acquiring unit is used to obtain the shared RE sum N1 ' by the determined PD PDCCH of J; The second Collision Number acquiring unit is used for obtaining the shared RE by the determined PD PDCCH of J, the identical number N2 ' of RE that occupies with setting physical channel of being determined by I and setting signal; Second computing unit is used for the ratio according to N2 ' and N1 ', obtains collision probability P2.
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.
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 (16)
1. a cell ID ID planing method that improves the physical downlink control channel PDCCH performance is characterized in that, comprising:
Obtain the resource location by determined setting physical channel of each sub-district ID and setting signal among the pre-candidate cell ID, described setting physical channel comprises PD PDCCH;
Be respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality;
According to the probability of interference of all combinations, be each physical area distribution sub-district ID of sub-district ID to be allocated.
2. the method for claim 1 is characterized in that, according to the probability of interference of all combinations, each physical area distribution sub-district ID for sub-district ID to be allocated specifically comprises:
Obtain the neighbouring relations between each physical area of sub-district ID to be allocated in the whole network;
Is starting point according to described neighbouring relations with the maximum physical area of adjacent number of cells, according to the probability of interference of all combinations, is each physical area distribution sub-district ID of sub-district ID to be allocated.
3. the method for claim 1 is characterized in that, according to the probability of interference of all combinations, each physical area distribution sub-district ID for sub-district ID to be allocated specifically comprises:
By the probability of interference order from small to large of all combinations, seek the sub-district ID that satisfies in the combination of setting constraints, be physical area and adjacent cell allocation ID thereof.
4. the method for claim 1 is characterized in that, obtains after the probability of interference of all combinations, also comprises:
The probability of interference of the combination that sub-district ID difference is identical is done on average, obtains the probability of interference of different districts ID difference correspondence;
According to the probability of interference of pressing different districts ID difference correspondence, be each physical area distribution sub-district ID of sub-district ID to be allocated.
5. method as claimed in claim 4 is characterized in that, according to the probability of interference of different districts ID difference correspondence, each physical area distribution sub-district ID for sub-district ID to be allocated specifically comprises:
Press the probability of interference order from small to large of different districts ID difference correspondence, seek and satisfy the determined sub-district ID of difference that sets constraints, be physical area and adjacent cell allocation ID thereof.
6. as claim 3 or 5 described methods, it is characterized in that described setting constraints comprises in the following constraints any or appoints a plurality of:
Reference signal RS is to the constraints of sub-district ID planning;
Master sync signal PSS and auxiliary synchronous signals SSS are to the constraints of sub-district ID planning;
Physical Random Access Channel PRACH is to the constraints of sub-district ID planning;
Whether the probability of interference of combination or the probability of interference of sub-district ID difference correspondence be less than the constraints of setting thresholding.
7. as the arbitrary described method of claim 1～5, it is characterized in that, obtain the probability of interference of described combination, specifically comprise:
Obtain resource location, with collision probability P1 by the resource location of determined setting physical channel of J and setting signal by the determined PD PDCCH of I;
Obtain by J the resource location of definite PD PDCCH, with collision probability P2 by the resource location of determined setting physical channel of I and setting signal;
With the mean value of P1 and P2 probability of interference as described combination.
8. method as claimed in claim 7 is characterized in that, described resource is a unit with the Resource Unit RE of preseting length, and the calculating of P1 comprises:
Obtain shared RE sum N1 by the determined PD PDCCH of I;
Obtain by among the shared RE of the determined PD PDCCH of I the identical number N2 of RE that occupies with setting physical channel of determining by J and setting signal;
According to the ratio of N2 and N1, obtain collision probability P1; The calculating of P2 comprises:
Obtain shared RE sum N1 ' by the determined PD PDCCH of J;
Obtain by among the shared RE of the determined PD PDCCH of J the identical number N2 ' of RE that occupies with setting physical channel of determining by I and setting signal;
According to the ratio of N2 ' and N1 ', obtain collision probability P2.
9. a cell ID ID device for planning that improves the physical downlink control channel PDCCH performance is characterized in that, comprising:
The resource location acquiring unit is used for obtaining the resource location by determined setting physical channel of each sub-district ID of pre-candidate cell ID and setting signal, and described setting physical channel comprises PD PDCCH;
The combination interference probability determining unit, be used for being respectively the combination that I, J form for sub-district ID, resource location according to the determined PD PDCCH of each sub-district ID in the described combination, collision probability with the resource location of determined setting physical channel of the other side sub-district ID and setting signal, obtain the probability of interference of described combination, described I, J are inequality;
Allocation units are used for the probability of interference according to all combinations, are each physical area distribution sub-district ID of sub-district ID to be allocated.
10. device as claimed in claim 9 is characterized in that, described combination interference probability determining unit specifically comprises:
The neighbouring relations acquiring unit is used for obtaining the neighbouring relations between each physical area of whole network sub-district ID to be allocated;
The order assignment unit, being used for according to described neighbouring relations is starting point with the maximum physical area of adjacent number of cells, according to the probability of interference of all combinations, is each physical area distribution sub-district ID of sub-district ID to be allocated.
11. device as claimed in claim 9 is characterized in that, described allocation units specifically are used for the probability of interference order from small to large by all combinations, seek the sub-district ID that satisfies in the combination of setting constraints, are physical area and adjacent cell allocation ID thereof.
12. device as claimed in claim 9 is characterized in that, also comprises:
Difference probability of interference determining unit, the probability of interference that is used for the combination that sub-district ID difference is identical is done on average, obtains the probability of interference of different districts ID difference correspondence;
Described allocation units specifically are used for according to the probability of interference by different districts ID difference correspondence, are each physical area distribution sub-district ID of sub-district ID to be allocated.
13. device as claimed in claim 12, it is characterized in that, described allocation units specifically are used for the probability of interference order from small to large by different districts ID difference correspondence, seek and satisfy the determined sub-district ID of difference that sets constraints, are physical area and adjacent cell allocation ID thereof.
14., it is characterized in that the setting constraints of described allocation units institute foundation comprises in the following constraints any or appoints a plurality of: reference signal RS is to the constraints of sub-district ID planning as claim 11 or 13 described devices; Master sync signal PSS and auxiliary synchronous signals SSS are to the constraints of sub-district ID planning; Physical Random Access Channel PRACH is to the constraints of sub-district ID planning; Whether the probability of interference of combination or the probability of interference of sub-district ID difference correspondence be less than the constraints of setting thresholding.
15., it is characterized in that described combination interference probability determining unit specifically comprises as the arbitrary described device of claim 9～13:
The first collision probability acquiring unit is used to obtain the resource location by the determined PD PDCCH of I, with the collision probability P1 by the resource location of determined setting physical channel of J and setting signal;
The second collision probability acquiring unit, be used to obtain by J the resource location of definite PD PDCCH, with collision probability P2 by the resource location of determined setting physical channel of I and setting signal;
The average acquiring unit is used for the mean value of P1 and the P2 probability of interference as described combination.
16. device as claimed in claim 15 is characterized in that, the described first collision probability acquiring unit specifically comprises:
The first total acquiring unit is used to obtain the shared RE sum N1 by the determined PD PDCCH of I;
The first Collision Number acquiring unit is used for obtaining the shared RE by the determined PD PDCCH of I, the identical number N2 of RE that occupies with setting physical channel of being determined by J and setting signal;
First computing unit is used for the ratio according to N2 and N1, obtains collision probability P1;
The described second collision probability acquiring unit specifically comprises:
The second total acquiring unit is used to obtain the shared RE sum N1 ' by the determined PD PDCCH of J;
The second Collision Number acquiring unit is used for obtaining the shared RE by the determined PD PDCCH of J, the identical number N2 ' of RE that occupies with setting physical channel of being determined by I and setting signal;
Second computing unit is used for the ratio according to N2 ' and N1 ', obtains collision probability P2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100050346A CN102075947B (en) | 2011-01-11 | 2011-01-11 | Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance |
| PCT/CN2012/070231 WO2012095002A1 (en) | 2011-01-11 | 2012-01-11 | Cell id programming method and device for improving pdcch channel performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100050346A CN102075947B (en) | 2011-01-11 | 2011-01-11 | Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102075947A true CN102075947A (en) | 2011-05-25 |
| CN102075947B CN102075947B (en) | 2013-03-13 |
Family
ID=44034260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100050346A Active CN102075947B (en) | 2011-01-11 | 2011-01-11 | Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102075947B (en) |
| WO (1) | WO2012095002A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102547738A (en) * | 2011-12-07 | 2012-07-04 | 北京邮电大学 | Method for controlling channel resource distribution and terminal blind detection method based on same |
| CN102571288A (en) * | 2012-02-13 | 2012-07-11 | 电信科学技术研究院 | Method for determining channel performance and apparatus thereof |
| CN102595417A (en) * | 2012-02-22 | 2012-07-18 | 电信科学技术研究院 | Planning method and system for community resources |
| WO2012095002A1 (en) * | 2011-01-11 | 2012-07-19 | 大唐移动通信设备有限公司 | Cell id programming method and device for improving pdcch channel performance |
| CN102638801A (en) * | 2012-03-21 | 2012-08-15 | 大唐移动通信设备有限公司 | Method and device for planning physical cell in long term evolution (LTE) system |
| WO2012167433A1 (en) * | 2011-06-09 | 2012-12-13 | Empire Technology Development Llc | Method for improving the success rate of reception of control channels in an lte system |
| CN103220077A (en) * | 2012-01-21 | 2013-07-24 | 华为技术有限公司 | Data transmission and receiving method, base station and user equipment |
| CN103327505A (en) * | 2012-03-19 | 2013-09-25 | 中国移动通信集团设计院有限公司 | Method and device for determining physical cellular identification |
| CN104144430A (en) * | 2013-05-09 | 2014-11-12 | 中国移动通信集团浙江有限公司 | Physical cell identity optimizing method and device |
| CN104956705A (en) * | 2012-12-04 | 2015-09-30 | 诺基亚通信公司 | Algorithm for physical cell identifier allocation |
| CN109889360A (en) * | 2018-12-07 | 2019-06-14 | 中国南方电网有限责任公司 | Determine the method and device of regenerator placement location |
| CN113645611A (en) * | 2021-10-18 | 2021-11-12 | 中通服建设有限公司 | Ternary constrained 5G PCI planning method and device and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101159470A (en) * | 2007-11-02 | 2008-04-09 | 中兴通讯股份有限公司 | Method of mapping downlink control signaling indication channel to physical resource |
| CN101283616A (en) * | 2005-10-07 | 2008-10-08 | 艾利森电话股份有限公司 | Subdistrict identification orientation with enhanced adaptability |
| WO2009152866A1 (en) * | 2008-06-20 | 2009-12-23 | Nokia Siemens Networks Oy | Configuration of nodes for local data transmission which are under an overlay wide area macro network operated on the same frequency layer |
| CN101720096A (en) * | 2009-11-27 | 2010-06-02 | 西安电子科技大学 | Self-configuration method of physical district ID in LTE cellular network |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7576528B2 (en) * | 2006-10-04 | 2009-08-18 | Power Integrations, Inc. | Control circuit responsive to an impedance |
| CN102075947B (en) * | 2011-01-11 | 2013-03-13 | 大唐移动通信设备有限公司 | Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance |
-
2011
- 2011-01-11 CN CN2011100050346A patent/CN102075947B/en active Active
-
2012
- 2012-01-11 WO PCT/CN2012/070231 patent/WO2012095002A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101283616A (en) * | 2005-10-07 | 2008-10-08 | 艾利森电话股份有限公司 | Subdistrict identification orientation with enhanced adaptability |
| CN101159470A (en) * | 2007-11-02 | 2008-04-09 | 中兴通讯股份有限公司 | Method of mapping downlink control signaling indication channel to physical resource |
| WO2009152866A1 (en) * | 2008-06-20 | 2009-12-23 | Nokia Siemens Networks Oy | Configuration of nodes for local data transmission which are under an overlay wide area macro network operated on the same frequency layer |
| CN101720096A (en) * | 2009-11-27 | 2010-06-02 | 西安电子科技大学 | Self-configuration method of physical district ID in LTE cellular network |
Non-Patent Citations (1)
| Title |
|---|
| 3GPP TSG RAN: "《3GPP TR 36.902 V9.3.0》", 31 December 2010 * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012095002A1 (en) * | 2011-01-11 | 2012-07-19 | 大唐移动通信设备有限公司 | Cell id programming method and device for improving pdcch channel performance |
| WO2012167433A1 (en) * | 2011-06-09 | 2012-12-13 | Empire Technology Development Llc | Method for improving the success rate of reception of control channels in an lte system |
| US8675598B2 (en) | 2011-06-09 | 2014-03-18 | Empire Technology Development Llc | Method for improving the success rate of reception of control channels in an LTE system |
| CN102547738B (en) * | 2011-12-07 | 2015-02-25 | 北京邮电大学 | Method for controlling channel resource distribution and terminal blind detection method based on same |
| CN102547738A (en) * | 2011-12-07 | 2012-07-04 | 北京邮电大学 | Method for controlling channel resource distribution and terminal blind detection method based on same |
| CN104054366A (en) * | 2012-01-21 | 2014-09-17 | 华为技术有限公司 | Data sending and receiving method, base station and user equipment |
| WO2013107159A1 (en) * | 2012-01-21 | 2013-07-25 | 华为技术有限公司 | Data sending and receiving method, base station and user equipment |
| US10687320B2 (en) | 2012-01-21 | 2020-06-16 | Huawei Technologies Co., Ltd. | Data sending method, data receiving method, base station and user equipment |
| US9936491B2 (en) | 2012-01-21 | 2018-04-03 | Huawei Technologies Co., Ltd. | Data sending method, data receiving method, base station and user equipment |
| CN103220077A (en) * | 2012-01-21 | 2013-07-24 | 华为技术有限公司 | Data transmission and receiving method, base station and user equipment |
| CN102571288A (en) * | 2012-02-13 | 2012-07-11 | 电信科学技术研究院 | Method for determining channel performance and apparatus thereof |
| CN102571288B (en) * | 2012-02-13 | 2015-05-27 | 电信科学技术研究院 | Method for determining channel performance and apparatus thereof |
| CN102595417A (en) * | 2012-02-22 | 2012-07-18 | 电信科学技术研究院 | Planning method and system for community resources |
| CN102595417B (en) * | 2012-02-22 | 2015-06-24 | 电信科学技术研究院 | Planning method and system for community resources |
| CN103327505B (en) * | 2012-03-19 | 2016-01-27 | 中国移动通信集团设计院有限公司 | The defining method of Physical Cell Identifier and device |
| CN103327505A (en) * | 2012-03-19 | 2013-09-25 | 中国移动通信集团设计院有限公司 | Method and device for determining physical cellular identification |
| CN102638801A (en) * | 2012-03-21 | 2012-08-15 | 大唐移动通信设备有限公司 | Method and device for planning physical cell in long term evolution (LTE) system |
| CN104956705A (en) * | 2012-12-04 | 2015-09-30 | 诺基亚通信公司 | Algorithm for physical cell identifier allocation |
| CN104956705B (en) * | 2012-12-04 | 2018-09-07 | 诺基亚通信公司 | Algorithm for physical cell identifier distribution |
| CN104144430A (en) * | 2013-05-09 | 2014-11-12 | 中国移动通信集团浙江有限公司 | Physical cell identity optimizing method and device |
| CN104144430B (en) * | 2013-05-09 | 2017-11-21 | 中国移动通信集团浙江有限公司 | A kind of Physical Cell Identifier optimization method and device |
| CN109889360A (en) * | 2018-12-07 | 2019-06-14 | 中国南方电网有限责任公司 | Determine the method and device of regenerator placement location |
| CN113645611A (en) * | 2021-10-18 | 2021-11-12 | 中通服建设有限公司 | Ternary constrained 5G PCI planning method and device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012095002A1 (en) | 2012-07-19 |
| CN102075947B (en) | 2013-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102075947B (en) | Cell identification (ID) planning method and device for improving physical downlink control channel PDCCH performance | |
| CN1992962B (en) | Inter-cell interference coordination method based on evolution network architecture of 3G system | |
| CN102026390B (en) | Base station and resource allocation method for realizing interference coordination among cells | |
| CN107172682B (en) | Ultra-dense network wireless resource allocation method based on dynamic clustering | |
| CN101404800B (en) | Semi-static interference coordination method based on void cell in OFDMA cellular system | |
| CN101784056B (en) | Method for coordinating interference | |
| CN101553035B (en) | Distribution method of time frequency resources | |
| CN102469467A (en) | Method and equipment for allocating resource | |
| KR102197559B1 (en) | Apparatus and method for wireless communication system | |
| CN102413510A (en) | Cell access control method and device | |
| CN107070583B (en) | A kind of efficiency optimization method of heterogeneous network enhancement type district interference coordination | |
| CN102045855B (en) | Method for coordinating interference among cells, base station equipment and communication system | |
| CN103313251A (en) | Multi-cell cooperative resource allocation method based on potential game theory | |
| CN102098679B (en) | Method for reducing long term evolution (LTE) radio communication system cell interference by using cognitive technology | |
| CN104168656A (en) | Detection reference signal SRS resource allocation method and device | |
| Liang | Dynamic resource allocation in mobile heterogeneous cellular networks | |
| CN102026168B (en) | Method and equipment for distributing physical cell ID | |
| CN102387497A (en) | Base station and allocation method of radio network temporary identities | |
| CN103997738A (en) | Anti-interference clustering management method and device | |
| CN102387554B (en) | Method for allocating inter-cell interference coordination (ICIC) resource | |
| CN103428702A (en) | Resource allocation method for controlling inter-cell interference | |
| CN101815300A (en) | Cell frequency assignment method and device in TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system | |
| CN102118752B (en) | Method and device for interference control and coordination | |
| CN102480734B (en) | Time-frequency resource distributing method and device | |
| CN110753357A (en) | Interference management and resource allocation method in heterogeneous network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |