CN109560890B - Inter-cell dynamic interference coordination method and device - Google Patents
Inter-cell dynamic interference coordination method and device Download PDFInfo
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- CN109560890B CN109560890B CN201910027773.1A CN201910027773A CN109560890B CN 109560890 B CN109560890 B CN 109560890B CN 201910027773 A CN201910027773 A CN 201910027773A CN 109560890 B CN109560890 B CN 109560890B
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- H04J11/0023—Interference mitigation or co-ordination
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Abstract
The embodiment of the invention provides a method and a device for coordinating dynamic interference among cells, wherein the method comprises the following steps: dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell; and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell. According to the method and the device for coordinating the dynamic interference among the cells, provided by the embodiment of the invention, the dynamic change condition of the cell edge user is obtained, the cell edge frequency band range is properly expanded or contracted, and the frequency domain resources of the edge user are dynamically coordinated, so that the occurrence of frequency domain resource conflict of the edge user can be avoided, the influence of inter-cell co-frequency interference on the edge user is eliminated, the problem of edge coverage rate is ensured, and the satisfaction degree of the user is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a method and a device for coordinating dynamic interference among cells.
Background
The LTE system adopts an Orthogonal Frequency Division Multiple Access (OFDMA) technology, and in order to provide higher system capacity in a limited Frequency band, it needs to support the same-Frequency networking, i.e. the multiplexing factor of the whole network is 1, so the same-Frequency interference between adjacent same-Frequency cells is an important factor affecting the system performance (throughput, coverage, etc.).
For cell edge users, co-channel interference from other cells is more likely to occur or suffer due to the greater distance from the base station. And because the difference between the interference power received by the user and the effective signal power is not large at the edge of the cell, the interference is obvious, at this time, the effect of reducing the interference by adjusting the initial transmitting power is not large, and starting from resource allocation coordination, the scheduling of the edge user on the same Physical Resource Block (PRB) of the same subframe is avoided as much as possible.
Therefore, a method for dynamic interference coordination between cells is needed to solve the above problems.
Disclosure of Invention
In order to solve the above problem, embodiments of the present invention provide a method and an apparatus for inter-cell dynamic interference coordination, which overcome the above problem or at least partially solve the above problem.
In a first aspect, a method for coordinating dynamic interference between cells provided in an embodiment of the present invention includes:
dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell;
and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell.
A second aspect of the present invention provides an inter-cell dynamic interference coordination apparatus, including:
the division acquisition module is used for dividing an initial edge frequency band range for edge users in a cell and acquiring the dynamic load condition of the edge users in the adjacent cell;
and the adjusting module is used for adjusting the initial edge frequency band range according to the dynamic load condition of the edge users of the adjacent cells.
Third aspect an embodiment of the present invention provides an electronic device, including:
a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the memory stores program instructions executable by the processor, and the processor calls the program instructions to perform the inter-cell dynamic interference coordination method.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the above-mentioned inter-cell dynamic interference coordination method.
According to the method and the device for coordinating the dynamic interference among the cells, provided by the embodiment of the invention, the dynamic change condition of the cell edge user is obtained, the cell edge frequency band range is properly expanded or contracted, and the frequency domain resources of the edge user are dynamically coordinated, so that the occurrence of frequency domain resource conflict of the edge user can be avoided, the influence of inter-cell co-frequency interference on the edge user is eliminated, the problem of edge coverage rate is ensured, and the satisfaction degree of the user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for inter-cell dynamic interference coordination according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an inter-cell dynamic interference coordination apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, for cell edge users, the same frequency interference from other cells is more easily generated or received due to the farther distance from the base station. Since the difference between the interference power received by the user and the effective signal power is not large at the cell edge, and the interference is relatively obvious, at this time, the effect of reducing the interference by adjusting the initial transmitting power is not large, and starting from resource allocation coordination, scheduling of the edge user on the same Physical Resource Block (PRB) of the same subframe is avoided as much as possible.
To solve the above problem, fig. 1 is a schematic flow chart of a method for dynamic interference coordination between cells according to an embodiment of the present invention, as shown in fig. 1, including:
101. dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell;
102. and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell.
It should be noted that the execution subject in the embodiment of the present invention is the base station side, and is mainly applied to the LTE system, but other systems or scenarios may also implement the scheme provided in the embodiment of the present invention, and the embodiment of the present invention is not specifically limited. The embodiment of the invention completes the corresponding edge frequency band range adjustment through the information acquisition at the base station side, and avoids the interference of cell edge users as much as possible.
Specifically, in step 101, the cell refers to a current serving cell of the user, and for the current serving cell, the user is an edge user in the cell, and then for each edge user in the cell in such a situation, the embodiment of the present invention determines an initial frequency band range for the user, and preferably, the initial frequency band range is generally about one third of the full frequency band. After the initial frequency band range of the edge user is determined, the embodiment of the present invention further needs to acquire a dynamic load condition of the edge user of the neighboring cell, where the neighboring cell refers to a cell that is adjacent to a current serving cell of the user and may generate interference, and the dynamic load condition is reflected in the embodiment of the present invention as a predicted edge frequency band range of the neighboring cell, so as to perform appropriate collision avoidance according to the range of the neighboring cell and the range of the neighboring cell, and select a better coordination strategy.
Further, in step 102, the embodiment of the present invention reasonably adjusts the edge frequency band range of itself according to the dynamic load condition of the edge users of the neighboring cell. It is understood that if the edge load of the neighboring cell is high, the edge band range may be appropriately narrowed, and if the edge load of the neighboring cell is low, the edge band range may be appropriately expanded.
According to the method for coordinating the dynamic interference between the cells, provided by the embodiment of the invention, the dynamic load condition of the edge user between the adjacent cells is obtained, the edge frequency band range of the cells is properly expanded or contracted, and the frequency domain resources of the edge user are dynamically coordinated, so that the occurrence of frequency domain resource conflict of the edge user can be avoided, the influence of inter-cell co-frequency interference on the edge user is eliminated, the problem of edge coverage rate is ensured, and the satisfaction degree of the user is improved.
On the basis of the foregoing embodiment, before the dividing an initial edge frequency band range for an edge user in a cell and acquiring a dynamic load condition of an edge user in an adjacent cell, the method further includes:
acquiring a measurement report reported by a user;
and determining the edge users in the cell according to the measurement report.
As can be seen from the above description of the embodiments, the embodiments of the present invention determine edge users in a cell, and divide an initial edge frequency band range for the edge users. Specifically, the embodiment of the present invention determines whether a user is an edge user or a center user according to measurement reports reported by all users, and if the user is an edge user, an initial edge frequency band range is divided for the user, and if the user is a center user, the initial edge frequency band range is not considered in the embodiment of the present invention.
On the basis of the foregoing embodiment, the acquiring a measurement report reported by a user specifically includes:
receiving the measurement report reported by the user when the user meets a preset condition, wherein the preset condition is as follows:
Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+Off，
mn is a measurement result of an adjacent cell without considering an offset, Ofn is a frequency specific offset of a frequency point of the adjacent cell, Ocn is a specific offset of the adjacent cell, Ms is a measurement result of a serving cell without considering an offset, Ofs is a frequency specific offset of the serving cell, Ocs is a cell specific offset of the serving cell, Hys is a hysteresis parameter of a current measurement time, and Off is an offset parameter of the current measurement time.
It should be noted that the reference value may be appropriately adjusted according to the actual application scenario, and preferably, the reference value of Ofs is set to 0, the reference value of Ocs is set to 0, the reference value of Hys is set to 0.5, and the reference value of Off is set to-8.
On the basis of the foregoing embodiment, the dividing an initial edge frequency band range for edge users in a cell includes:
and setting a plurality of division modes according to the bandwidth of the cell, wherein each division mode corresponds to one initial edge frequency band range, and the edge frequency band range is about 1/3 of the bandwidth optimally.
As can be seen from the content of the foregoing embodiment, the embodiment of the present invention needs to perform division of an initial edge frequency band, and then during specific division, because the bandwidth conditions of the cells are different, the embodiment of the present invention may set a plurality of division modes to reasonably distinguish different situations. For example: taking the cell 10M bandwidth as an example, three division modes are set, namely mode0, mode1 and mode 2. The patterns between adjacent cells must be configured differently. And the uplink transmission and the downlink transmission are distinguished, then the UL _ ICIC _ mode0 range set in the uplink transmission process is 14PRB, the UL _ ICIC _ mode1 range is 14PRB, the UL _ ICIC _ mode2 range is 15PRB, the DL _ ICIC _ mode0 range set in the downlink transmission process is 15PRB, the DL _ ICIC _ mode1 range is 18PRB, and the DL _ ICIC _ mode2 range is 17 PRB. It should be noted that, according to an actual situation, the number and the range of the actually set modes can be reasonably adjusted in the embodiment of the present invention, and details of the embodiment of the present invention are not described again.
On the basis of the above embodiment, the initial edge band range includes an initial cell downlink edge band range and an initial cell uplink edge band range; correspondingly, the adjusting the initial edge frequency band range according to the dynamic load condition of the edge users of the adjacent cell specifically includes:
determining current relative narrowband transmitting power RNTP indication information and current high interference indication HII information according to the currently received edge frequency band variation and the last configured number of PRBs (physical resource blocks) of the edge frequency band;
and adjusting the range of the initial cell downlink edge frequency band according to the current downlink edge frequency band requirement, and adjusting the range of the initial cell uplink edge frequency band according to the current uplink edge frequency band requirement.
As can be seen from the above description of the embodiments, the embodiments of the present invention provide multiple partition modes, and each partition mode substantially corresponds to an uplink transmission process and a downlink transmission process. Then, correspondingly, the initial frequency band range should include the initial cell downlink edge frequency band range and the initial cell uplink edge frequency band range.
It should be noted that, in the embodiment of the present invention, no matter the downlink edge band range adjustment or the uplink edge band range adjustment is performed, the edge band variation reported last by the base station L2 and the number of the last configured edge band PRBs are determined. It can be understood that, the edge band variation reported last by L2, that is, the currently received edge band variation in the embodiment of the present invention, the last configuration refers to a final adjustment result in the last adjustment period.
Further, the information content of RNTP and HII required for the current adjustment can be determined based on the edge band variation reported last time by L2 and the number of last-time allocated edge band PRBs, and it can be understood that the adjustment range of the downlink can be determined by the RNTP information content, and the adjustment range of the uplink can be determined by the HII information.
Specifically, the embodiment of the present invention may count the number of values 1 in the RNTP information and the HII information. These consecutive 1 s represent the demand for the edge-band PRB for a future time period to determine how to adjust the edge-band range. It should be noted that the downlink process and the uplink process are similar, and the downlink process is taken as an example for the embodiment of the present invention to describe, and the uplink process may refer to the downlink process, which is not described again in the embodiment of the present invention.
The RNTP information in the embodiment of the present invention may be expressed as:
wherein the content of the first and second substances,
kmin[0]，kmax[0]minimum and maximum values, k, of the edge band PRB index in mode0 mode, respectivelymin[1]，kmax[1]Minimum and maximum values, k, of the edge band PRB index in mode1 mode, respectivelymin[2]，kmax[2]Respectively the minimum and maximum values of the edge band PRB index in mode2 mode.
The specific operation process is as follows:
step 1, after a certain subframe is scheduled, judging whether PRB [ i ] is scheduled to an edge user, if so, counting current period scheduling information RNTP _ CNT [ i ] and adding 1;
step 2, judging whether the PRB [ i ] is scheduled to a GBR bearer, if so, counting the number of PRBs RNTP _ GBR _ CNT borne by the edge user GBR and adding 1;
and 3, when the RNTP reporting time is up, filtering the RNTP _ GBR _ CNT, wherein the filtering process is as follows: RNTP _ GBR _ CNT ═ floor (α × RNTP _ GBR _ CNT + (1- α) × RNTP _ LAST _ GBR _ CNT), where α is a filter coefficient and takes a value of 0 to 1, and preferably, in the embodiment of the present invention, α takes a value of 0.3.
It should be noted that, in order to facilitate coordination between base stations and ensure that a certain basic edge band range is reserved in a cell, the minimum value of the edge band range is limited to 1/6 of the downlink bandwidth (total number of PRBs), and the maximum value is limited to 1/2 of the downlink bandwidth (total number of PRBs).
On the basis of the foregoing embodiment, the adjusting the initial cell downlink edge band range according to the current cell downlink edge band required range and the neighboring cell RNTP indication information, and adjusting the initial cell uplink edge band range according to the current cell uplink edge band required range and the neighboring cell HII information specifically includes:
predicting a demand trend of an edge frequency band according to the currently received edge frequency band variation, wherein the demand trend of the edge frequency band comprises an expansion trend, a contraction trend and a constant trend;
and adjusting the range of the initial cell downlink edge frequency band according to the demand trend of the edge frequency band and the RNTP indication information of the current adjacent cell, and adjusting the range of the initial cell uplink edge frequency band according to the demand trend of the edge frequency band and the HII information of the current adjacent cell.
As can be seen from the content of the foregoing embodiment, in the embodiment of the present invention, the current relative narrowband transmission power RNTP indication information and the current high interference indication HII information can be determined from the currently received edge band variation and the last configured number of edge band physical resource blocks PRB.
It can be understood that there are three kinds of dynamic changes of the edge band for a single cell: remain unchanged, contract or expand. Correspondingly, the embodiment of the invention also correspondingly divides the demand trend of the edge frequency band into three categories, namely an expansion trend, a contraction trend and a constant trend. And reasonably coordinating the cell downlink edge frequency band range and the cell uplink edge frequency band range by combining RNTP and HII information of the adjacent cell, avoiding the conflict of the edge frequency bands among the cells and simultaneously utilizing all the edge frequency band ranges as much as possible.
Specifically, the process of predicting the trend is as follows:
N1＝NPRB+ΔRBG*RBG_Size,
wherein N isPRBThe number of PRBs of the last edge band. DeltaRBGIs an embodiment of the inventionReasonably estimating the scheduling condition in a period of time, and predicting the difference value between the required quantity of the edge band RBG (resource Block group) in a period of time in the future and the current configuration, wherein the value 1 represents that expansion is required, the value 1 represents that contraction is required, the value 0 represents that contraction is not required, and the value delta represents that delta is constantRBGThe calculation method of (2) is as follows:
wherein k islowAnd khighFor the threshold of utilization, preferably, klowIs set to 0.5khighIs set to 0.7, ρ represents the statistics of the total bandwidth request GBR bearer utilization of the edge band, and the calculation formula of ρ is as follows:
here, RNTP _ GBR _ CNT indicates the number of downlink PRBs used for edge user GBR bearer scheduling (uplink scheduling is similar, and indicated by HII _ GBR _ CNT). T isrntpDenotes the statistical period (in seconds), NPRBIndicating the number of initially configured edge band PRBs.
Thereby according to ΔRBGThe value of (2) to determine the demand trend of the edge frequency band, and further complete the adjustment process of the edge frequency band range.
In order to maintain the continuity of the edge band, the following principle needs to be satisfied for the expansion cases in multiple modes, and similarly, the embodiment of the present invention is described by taking three expansion modes as an example:
if mode1 and mode0 expand simultaneously and mode2 contracts, then mode1 keeps expanding continuously and mode0 uses a separate band; if mode1 and mode2 expand simultaneously and mode0 contracts, then mode1 keeps expanding continuously and mode2 uses a single band; if all the modes expand simultaneously, the contraction frequency band is averagely occupied and allocated, and if the contraction frequency band has only 1 RBG, the mode which can keep the frequency band continuous is allocated.
On the basis of the above embodiment, the method further includes:
calculating the additional RBG demand of the adjacent cells in each division mode;
and if the additional RBG demand of the adjacent cell meets a coordination rule, adjusting the range of the initial edge frequency band.
It can be understood that after the range adjustment is performed on the cells in each mode, the edge band requirement may or may not be met, so that the adjustment process needs to meet the preset condition. The coordination rule provided by the embodiment of the invention is judged according to the additional RBG demand of the adjacent cell.
The edge frequency band detection process for the adjacent cell is as follows:
step 1, inquiring ICIC configuration of a cell, and modifying Bmin and Bmax values according to an edge frequency band range required by the cell, wherein Bmin is Pmin, and Bmax is Pmax;
step 2, traversing each possibly interfered adjacent cell, inquiring ICIC configuration of the adjacent cell, and acquiring the required range of the adjacent cell edge frequency band according to RNTP and HII messages of the adjacent cell, wherein the required range is represented by bmin and bmax;
step 3, merging the [ Bmin, Bmax ] and the initial range [ Bmin, Bmax ] of the edge frequency band of the adjacent region, thereby updating to obtain: bmin ═ min (Bmin ), Bmax ═ max (Bmax );
and 4, calculating the RBG extra demand Nrbg [ 0-2 ] of each mode according to the adjacent region edge frequency band range [ Bmin, Bmax ] and the initial configuration range [ kmin, kmax ].
Wherein, Nrbg [0] ═ floor ((Bmax [0] -kmax [0])/RBG _ Size);
Nrbg[1]＝floor((Bmax[1]-kmax[1])/RBG_Size)；
Nrbg[2]＝floor((kmin[2]-Bmin[2])/RBG_Size)；
the calculated result has a positive value indicating expansion, a zero indicating invariance, a negative value indicating contraction, Nrbg [0] indicating the RBG extra demand for pattern 0, Nrbg [1] indicating the RBG extra demand for pattern 1, and Nrbg [2] indicating the RBG extra demand for pattern 2.
Then, after calculating the corresponding RBG extra demand under each mode, the Nrbg [ 0-2 ] can be adjusted only when meeting the coordination rule, otherwise, the original edge frequency band range is kept unchanged.
The regulation rule is as follows:
if Nrbg [ 0-2 ] is less than or equal to 0, the current service cell and the adjacent cell do not need to be expanded, and the current service cell keeps initial configuration; if Nrbg [ 0-2 ] is greater than 0, it represents that the current service cell and the adjacent cell need to be expanded, and then the initial configuration is maintained; if the Nrbg [ 0-2 ] of the current service cell is less than or equal to 0 and other adjacent cells need to be expanded, contracting the current service cell and expanding the adjacent cells; if the current serving cell needs to be expanded and at most one neighboring cell needs to be expanded, then an appropriate expansion range may be selected according to the mode of the current serving cell.
Fig. 2 is a schematic structural diagram of an inter-cell dynamic interference coordination apparatus according to an embodiment of the present invention, as shown in fig. 2, including: a division obtaining module 201 and an adjusting module 202, wherein:
the division acquiring module 201 is configured to divide an initial edge frequency band range for edge users in a cell, and acquire a dynamic load condition of edge users in an adjacent cell;
the adjusting module 202 is configured to adjust the initial edge frequency band range according to a dynamic load condition of the edge user of the neighboring cell.
Specifically, how to perform inter-cell dynamic interference coordination through the division obtaining module 201 and the adjusting module 202 may be used to execute the technical scheme of the embodiment of the inter-cell dynamic interference coordination method shown in fig. 1, and the implementation principle and the technical effect are similar, and are not described herein again.
The device for coordinating dynamic interference among cells provided by the embodiment of the invention appropriately expands or contracts the range of the cell edge frequency band by acquiring the dynamic change condition of the cell edge user, and dynamically coordinates the frequency domain resources of the edge user, thereby avoiding the occurrence of frequency domain resource conflicts of the edge user, eliminating the influence of inter-cell co-frequency interference on the edge user, ensuring the problem of edge coverage rate, and improving the satisfaction degree of the user.
On the basis of the foregoing embodiment, the dynamic interference coordination apparatus further includes:
the acquisition module is used for acquiring a measurement report reported by a user;
a determining module, configured to determine edge users in the cell according to the measurement report.
On the basis of the above embodiment, the acquiring module specifically includes:
a receiving and reporting unit, configured to receive the measurement report reported by the user when the user meets a preset condition, where the preset condition is:
Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+Off，
mn is a measurement result of an adjacent cell without considering an offset, Ofn is a frequency specific offset of a frequency point of the adjacent cell, Ocn is a specific offset of the adjacent cell, Ms is a measurement result of a serving cell without considering an offset, Ofs is a frequency specific offset of the serving cell, Ocs is a cell specific offset of the serving cell, Hys is a hysteresis parameter of a current measurement time, and Off is an offset parameter of the current measurement time.
On the basis of the above embodiment, the dividing and acquiring module includes:
and the mode setting unit is used for setting a plurality of division modes according to the bandwidth of the cell, and each division mode corresponds to one initial edge frequency band range.
On the basis of the above embodiment, the initial edge band range includes an initial cell downlink edge band range and an initial cell uplink edge band range; correspondingly, the adjusting module specifically includes:
an information confirmation unit, configured to determine, according to a currently received edge band variation and a last configured number of edge band physical resource blocks PRB, current relative narrowband transmit power RNTP indication information and current high interference indication HII information;
and the range adjusting unit is used for adjusting the downlink marginal frequency band range of the initial cell according to the downlink frequency band required range of the current cell and the RNTP indication information of the adjacent cell, and adjusting the uplink marginal frequency band range of the initial cell according to the uplink frequency band required range of the current cell and the HII information of the adjacent cell.
On the basis of the above embodiment, the range adjusting unit specifically includes:
the predicting subunit is configured to predict a demand trend of the edge frequency band according to the currently received edge frequency band variation, where the demand trend of the edge frequency band includes an expansion trend, a contraction trend, and a constant trend;
and an adjusting subunit, configured to adjust the range of the initial cell downlink edge band according to the demand trend of the edge band and the current RNTP indication information, and adjust the range of the initial cell uplink edge band according to the demand trend of the edge band and the current HII information.
On the basis of the foregoing embodiment, the dynamic interference coordination apparatus further includes:
the calculating module is used for calculating the RBG extra demand of the adjacent cell under each division mode;
and the constraint module is used for adjusting the initial edge frequency band range if the additional RBG demand of the adjacent cell meets a coordination rule.
An embodiment of the present invention provides an electronic device, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein:
fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention, and referring to fig. 3, the electronic device includes: a processor (processor)301, a communication Interface (communication Interface)302, a memory (memory)303 and a bus 304, wherein the processor 301, the communication Interface 302 and the memory 303 complete communication with each other through the bus 304. Processor 301 may call logic instructions in memory 303 to perform the following method: dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell; and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell.
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell; and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell; and adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to each embodiment or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for dynamic interference coordination between cells, comprising:
dividing an initial edge frequency band range for edge users in a cell, and acquiring the dynamic load condition of the edge users in the adjacent cell;
adjusting the range of the initial edge frequency band according to the dynamic load condition of the edge users of the adjacent cell;
the initial edge frequency band range comprises an initial cell downlink edge frequency band range and an initial cell uplink edge frequency band range; correspondingly, the adjusting the initial edge frequency band range according to the dynamic load condition of the edge users of the adjacent cell specifically includes:
determining current relative narrowband transmitting power RNTP indication information and current high interference indication HII information according to the currently received edge frequency band variation and the last configured number of PRBs (physical resource blocks) of the edge frequency band;
predicting a demand trend of an edge frequency band according to the currently received edge frequency band variation, wherein the demand trend of the edge frequency band comprises an expansion trend, a contraction trend and a constant trend;
adjusting the range of the initial cell downlink edge frequency band according to the demand trend of the edge frequency band and the current RNTP indication information, and adjusting the range of the initial cell uplink edge frequency band according to the demand trend of the edge frequency band and the current HII information;
the demand trend of the edge band is obtained by the following formula:
N1＝NPRB+ΔRBG*RBG_Size,
wherein the content of the first and second substances,
for the demand trend, NPRBRBG _ Size is the RBG requirement of the edge band,
is the downlink bandwidth, k, of the celllowAnd khighFor the utilization rate threshold, RNTP _ GBR _ CNT indicates the number of downlink PRBs used for GBR bearer scheduling of the edge user, TrntpRepresenting a statistical period.
2. The method of claim 1, wherein before the dividing an initial edge band range for edge users in a cell and obtaining dynamic loading conditions of edge users in a neighboring cell, the method further comprises:
acquiring a measurement report reported by a user;
and determining the edge users in the cell according to the measurement report.
3. The method according to claim 2, wherein the obtaining of the measurement report reported by the user specifically includes:
receiving the measurement report reported by the user when the user meets a preset condition, wherein the preset condition is as follows:
Mn+Ofn+Ocn-Hys＞Ms+Ofs+Ocs+Off，
mn is a measurement result of an adjacent cell without considering an offset, Ofn is a frequency specific offset of a frequency point of the adjacent cell, Ocn is a specific offset of the adjacent cell, Ms is a measurement result of a serving cell without considering an offset, Ofs is a frequency specific offset of the serving cell, Ocs is a cell specific offset of the serving cell, Hys is a hysteresis parameter of a current measurement time, and Off is an offset parameter of the current measurement time.
4. The method of claim 1, wherein the dividing an initial edge band range for edge users in a cell comprises:
and setting a plurality of division modes according to the bandwidth of the cell, wherein each division mode corresponds to one initial edge frequency band range.
5. The method of claim 4, further comprising:
calculating the additional RBG demand of the adjacent cells in each division mode;
and if the additional RBG demand of the adjacent cell meets a coordination rule, adjusting the range of the initial edge frequency band.
6. An apparatus for dynamic interference coordination between cells, comprising:
the division acquisition module is used for dividing an initial edge frequency band range for edge users in a cell and acquiring the dynamic load condition of the edge users in the adjacent cell;
an adjusting module, configured to adjust the initial edge frequency band range according to a dynamic load condition of the edge user of the neighboring cell;
the initial edge frequency band range comprises an initial cell downlink edge frequency band range and an initial cell uplink edge frequency band range; the adjustment module is specifically configured to:
determining current relative narrowband transmitting power RNTP indication information and current high interference indication HII information according to the currently received edge frequency band variation and the last configured number of PRBs (physical resource blocks) of the edge frequency band;
predicting a demand trend of an edge frequency band according to the currently received edge frequency band variation, wherein the demand trend of the edge frequency band comprises an expansion trend, a contraction trend and a constant trend;
adjusting the range of the initial cell downlink edge frequency band according to the demand trend of the edge frequency band and the current RNTP indication information, and adjusting the range of the initial cell uplink edge frequency band according to the demand trend of the edge frequency band and the current HII information;
the demand trend of the edge band is obtained by the following formula:
N1＝NPRB+ΔRBG*RBG_Size,
wherein the content of the first and second substances,
for the demand trend, NPRBRBG _ Size is the RBG requirement of the edge band,
is the downlink bandwidth, k, of the celllowAnd khighFor the utilization rate threshold, RNTP _ GBR _ CNT indicates the number of downlink PRBs used for GBR bearer scheduling of the edge user, TrntpRepresenting a statistical period.
7. An electronic device, comprising a memory and a processor, wherein the processor and the memory communicate with each other via a bus; the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 5.
8. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1 to 5.
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