CN101854636B - Confirming method, system and equipment of OI (Overload Indication) threshold value - Google Patents
Confirming method, system and equipment of OI (Overload Indication) threshold value Download PDFInfo
- Publication number
- CN101854636B CN101854636B CN 200910080972 CN200910080972A CN101854636B CN 101854636 B CN101854636 B CN 101854636B CN 200910080972 CN200910080972 CN 200910080972 CN 200910080972 A CN200910080972 A CN 200910080972A CN 101854636 B CN101854636 B CN 101854636B
- Authority
- CN
- China
- Prior art keywords
- threshold
- value
- phr
- cell
- current
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012423 maintenance Methods 0.000 claims description 64
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000009499 grossing Methods 0.000 claims description 7
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 238000005315 distribution function Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 208000021907 Central cloudy dystrophy of François Diseases 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- GVVPGTZRZFNKDS-JXMROGBWSA-N geranyl diphosphate Chemical compound CC(C)=CCC\C(C)=C\CO[P@](O)(=O)OP(O)(O)=O GVVPGTZRZFNKDS-JXMROGBWSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention embodiment discloses a method for adjusting an OI (Overload Indication) threshold value. The method comprises the following steps of: receiving a PHR (Power Headroom Report) value which is submitted by a terminal in a cell by access network equipment, wherein the PHR value is a difference between the emissive power of the terminal and an emissive power superior limit of the terminaland is calculated by the terminal; and adjusting a current OI threshold value of the cell according to the PHR value received in a set period of time. The invention embodiment discloses a system and equipment for adjusting the OI threshold value. The invention can be adopted to dynamically adjust the OI threshold value of the cell so that an ICIC (Inter-Cell Interference Coordination) technology takes better effect, a phenomenon of heavy system interference or low capacity can be effectively avoided to prevent unstable system and resource waste.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a method, a system, and a device for determining an Overload Indication (OI) threshold.
Background
In a Long Term Evolution (LTE) system and a long term evolution advanced (LTE-A) system, by introducing a network self-organization mechanism, the manual participation of network planning and operation maintenance is reduced, and the construction and operation cost of the network is reduced. It is against this background that the SON characteristics of the evolved universal terrestrial radio access (E-UTRA) system are being investigated as a working issue of the third generation mobile communication standardization organization (3 GPP). SON technology includes self-configuration, self-optimization, and self-healing, self-optimization being one of the important features.
In an LTE system, an Inter-Cell interference coordination (ICIC) technique is introduced to reduce co-channel interference between adjacent cells, and improve performance such as throughput and user satisfaction of Cell edge users. The ICIC technology supported by LTE includes two major categories, static interference coordination and semi-static interference coordination, where the semi-static interference coordination needs each cell to interact with its own load information through an X2 interface.
As shown in fig. 1, load information interacted between cells includes Overload Indicator (OI) information and High Interference Indicator (HII) information. The HII information is used to indicate which Physical Resource Blocks (PRBs) will generate high interference in a future period of time, so that a neighboring cell receiving the HII information avoids using the PRBs that will generate high interference as much as possible when performing resource scheduling.
The OI information is used for indicating the interference level on each PRB of the cell, and the interference level on the PRB includes three levels, namely high (H), medium (M) and low (L). After receiving the OI information, the adjacent cell adjusts the transmission power on the corresponding PRB according to the interference level on each PRB, or abandons the use of the PRB with high interference level.
In the LTE system, the method for determining the interference level of a certain PRB is as follows:
determining a signal Interference value on a PRB according to a Received Interference Power (Received Interference Power) and a Thermal Noise Power (Thermal Noise Power) on the PRB; and comparing the determined signal interference value of the PRB with preset OI threshold values TH1 and TH2, and determining the interference level of the PRB according to the comparison result, wherein TH1 < TH 2. Specifically, if the signal interference value of the PRB is lower than TH1, the interference level of the PRB is set to L; if the signal interference value of the PRB is greater than TH1 and less than TH2, setting the interference level of the PRB as M; if the signal interference value of the PRB is higher than TH2, the interference level of the PRB is set to H.
The setting of the OI threshold value should be matched with the uplink expected IoT value of the system, and if the OI threshold value is set to be too high, the interference of the system is increased, so that the instability of the system is easily caused; if the threshold of the OI is set too low, the capacity of the system is small, and resource waste is easily caused.
In the process of implementing the invention, the inventor finds that the following technical problems exist in the prior art:
in the prior art, the interference level of a PRB is determined according to a preset OI threshold, and when the system traffic load and the like change, if the OI threshold is not adjusted, the preset OI threshold is inevitably not matched with the uplink expected IoT value of the system, so that the interference of the system is too large or the capacity is not high, and the system is unstable or the resources are wasted.
Disclosure of Invention
The embodiment of the invention provides a method, a system and equipment for determining an Overload Indication (OI) threshold value, which are used for solving the problem that the OI threshold value in the prior art cannot be dynamically adjusted.
The embodiment of the invention provides a method for adjusting an Overload Indication (OI) threshold, which comprises the following steps:
the method comprises the steps that an access network device receives a Power Headroom Report (PHR) value reported by a terminal in a cell, wherein the PHR value is a difference value between the transmitting power of the terminal and the transmitting power upper limit of the terminal, which is calculated by the terminal;
adjusting the current OI threshold of the cell according to the PHR value received within the set time period, specifically including: counting the probability distribution of the PHR values received in the set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result; when the preset OI threshold value adjusting condition is determined to be met, adjusting the current OI threshold value of the cell; or selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
The embodiment of the invention provides a system for adjusting an Overload Indication (OI) threshold value, which comprises:
the terminal is used for reporting a Power Headroom Report (PHR) value to the access network equipment, wherein the PHR value is a difference value between the transmitting power of the terminal and an upper limit of the transmitting power, which is calculated by the terminal;
the access network device is configured to adjust a current OI threshold of the cell according to a PHR value reported by a terminal received within a set time period, and specifically includes: counting the probability distribution of the PHR values received in the set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result; when the preset OI threshold value adjusting condition is determined to be met, adjusting the current OI threshold value of the cell; or selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
An embodiment of the present invention provides an access network device, where the access network device includes:
a receiving unit, configured to receive a Power Headroom Report (PHR) value reported by a terminal, where the PHR value is a difference between a transmission power of the terminal and an upper limit of the transmission power, which is calculated by the terminal;
the adjusting unit comprises a counting unit and an executing unit, wherein the counting unit is used for counting the probability distribution of the PHR value received in a set time period and determining whether a preset OI threshold adjusting condition is met or not according to a counting result; the execution unit is used for adjusting the current OI threshold of the cell when the statistical unit determines that a preset OI threshold adjusting condition is met; or,
the adjusting unit is used for: and selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
In the invention, the access network equipment dynamically adjusts the OI threshold value of the cell according to the PHR value reported by the terminal and reflecting the difference value between the transmitting power of the terminal and the transmitting power upper limit calculated by the terminal, thereby effectively avoiding the phenomena of overlarge system interference or low capacity, and further avoiding the instability of the system and resource waste.
Drawings
FIG. 1 is a diagram illustrating load information interacted between cells in the prior art;
FIG. 2 is a schematic flow chart of a method provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a system according to an embodiment of the present invention;
FIG. 4A is a schematic diagram of a system configuration according to a first embodiment of the present invention;
FIG. 4B is a schematic diagram of a system configuration according to a second embodiment of the present invention;
FIG. 4C is a schematic structural diagram of a system according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to dynamically adjust the OI threshold of a cell and avoid the phenomenon of excessive system interference or low capacity, an embodiment of the present invention provides a method for adjusting the OI threshold.
Referring to fig. 2, the method for adjusting the threshold of the OI provided by the embodiment of the present invention specifically includes the following steps:
step 20: the access network equipment receives a PHR value reported by a terminal in a cell, wherein the PHR value is a difference value between the transmitting power of the terminal and an upper limit of the transmitting power calculated by the terminal; specifically, the terminal calculates the transmission power of the terminal according to the scheduling bandwidth of the access network device and the path loss of the terminal.
Step 21: and adjusting the current OI threshold of the cell according to the PHR value received in the set time period.
In step 21, a specific method for adjusting the current OI threshold of the cell according to the PHR value received in the set time period may be as follows:
step 210: counting the probability distribution of the PHR values received in a set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result;
step 211: and when the preset OI threshold value adjusting condition is determined to be met, adjusting the current OI threshold value of the cell according to the set OI threshold value adjusting rule.
In step 210, the probability distribution of the PHR value received within the set time period is counted, and whether the preset OI threshold adjustment condition is met is determined according to the statistical result, which may be two specific methods as follows:
the first method comprises the following steps: firstly, determining the average value of PHR values reported by a terminal in a set time period for the terminal reporting the PHR values in a cell; then, forming a Cumulative Distribution Function (CDF) curve according to the determined average values, wherein a first coordinate of a point on the CDF curve is a PHR value, and a second coordinate is a proportion of the number of terminals with the PHR value less than or equal to the PHR value to the total number of terminals reporting the PHR value in a cell; and finally, determining a first coordinate value of a point on the CDF curve, wherein the second coordinate value is a first set numerical value, comparing the first coordinate value with a preset first PHR threshold value, and if the comparison result shows that the first coordinate value is inconsistent with the first PHR threshold value, determining that the preset OI threshold value adjustment condition is met. The first coordinate on the CDF curve may range from [ -23, 40 ]. The values of the first set value and the first PHR threshold may be set according to factors such as user satisfaction expected by the system, for example, if the user satisfaction expected by the system is 5% and the PHR value of the user is below 5dB, then the first set value may be set to 5% and the first PHR threshold is 5 dB.
Correspondingly, the method for adjusting the current OI threshold of the cell, namely the OI threshold adjustment rule, is as follows: if the first coordinate value is smaller than the first PHR threshold value, the current OI threshold value of the cell is reduced; if the first coordinate value is larger than the first PHR threshold value, the current OI threshold value of the cell is increased. Preferably, before the current OI threshold of the cell is turned down, it is determined whether the first coordinate value is smaller than a second PHR threshold, and when the first coordinate value is smaller than the second PHR threshold, the current OI threshold of the cell is turned down. Similarly, before increasing the current OI threshold of the cell, it is determined whether the first coordinate value is greater than a second PHR threshold, and when the first coordinate value is greater than the second PHR threshold, the current OI threshold of the cell is increased, and the second PHR threshold may be greater than or equal to the first PHR threshold.
And the second method comprises the following steps: firstly, determining the average value of PHR values reported by a terminal in a set time period for the terminal reporting the PHR values in a cell; then, forming an inverse cumulative distribution function (CCDF) curve according to the determined average values, wherein a first coordinate of a point on the CCDF curve is a PHR value, and a second coordinate is a proportion of the number of terminals with the PHR value larger than the PHR value to the total number of terminals reporting the PHR value in a cell; and finally, determining a first coordinate value of a point on the CCDF curve, wherein the second coordinate value of the point is a second set numerical value, comparing the first coordinate value with a preset third PHR threshold value, and if the comparison result shows that the first coordinate value is inconsistent with the third PHR threshold value, determining that the preset OI threshold value adjustment condition is met. The first coordinate on the CCDF curve may take on a range of [ -23, 40 ]. The values of the second set value and the third PHR threshold may also be set according to factors such as user satisfaction expected by the system, and the values of the second set value may be: (1-first set value), for example, the PHR value of 5% of users with the system expected user satisfaction is below 5dB, then the second set value may be set to 1-5%, i.e., 95%, and the third PHR threshold value is 5 dB.
Correspondingly, the method for adjusting the current OI threshold of the cell, namely the OI threshold adjustment rule, is as follows: if the first coordinate value is smaller than the third PHR threshold value, the current OI threshold value of the cell is increased; if the first coordinate value is larger than the third PHR threshold value, the current OI threshold value of the cell is adjusted to be low. Preferably, before increasing the current OI threshold of the cell, it is determined whether the first coordinate value is smaller than a fourth PHR threshold, and when the first coordinate value is smaller than the fourth PHR threshold, the current OI threshold of the cell is increased. Similarly, before the current OI threshold of the cell is turned down, it is determined whether the first coordinate value is greater than a fourth PHR threshold, and when the first coordinate value is greater than the fourth PHR threshold, the current OI threshold of the cell is turned down, and the fourth PHR threshold may be greater than or equal to the third PHR threshold.
In the two modes, when the first coordinate is a transverse coordinate, the second coordinate is a longitudinal coordinate; when the first coordinate is a vertical coordinate, the second coordinate is a horizontal coordinate.
The reason why the above two ways are true is explained as follows: in the LTE system, since the PHR reflects the difference between the maximum transmission capability of the terminal and the power used for actual transmission of the UE, the statistics of the PHR of each UE in the cell can be used to evaluate whether the OI threshold is set reasonably. The PHR value of the cell edge user is usually maintained at a lower level within the allowed uplink interference tolerance, and the PHR level of the cell edge user can be measured by the PHR level at the worst x% (e.g., 5%) of the statistical distribution of the PHR of the cell. On the other hand, the setting of the OI threshold directly affects the reporting level of the PHR value, such as: if the threshold of OI in a certain cell is set low, OI is easily indicated as "high" and should be avoided when allocating resources, resulting in a large residual of the UE's transmission capability due to the fact that the UE has no resources selected or needs to reduce power transmission on the selected resources, especially for edge UEs. The two modes are reasonable in combination.
Certainly, the implementation manner of step 210 is not limited to the above two, and other various manners may also be adopted, for example, after determining the average value of the PHR values reported by each terminal in a set time period, a histogram is formed according to the determined average value, where the histogram represents the ratio of the number of terminals whose PHR values are a certain PHR value to the total number of terminals reporting PHR values in a cell; and then, the proportion of the terminals with the third PHR threshold value to the total number of the terminals reporting the PHR value in the cell is obtained through accumulation calculation, the proportion value is determined to be compared with a preset third set numerical value, if the proportion value is smaller than the third set numerical value, the current OI threshold value of the cell is adjusted to be low, and if the proportion value is larger than the third set numerical value, the current OI threshold value of the cell is adjusted to be high. And so on.
Moreover, the implementation manner of adjusting the current OI threshold of the cell in step 21 is not limited to the manner described in step 210 to step 211, and other various manners may also be used, for example, a most recently received PHR value is selected from PHR values received within a set time period, the PHR value is compared with a preset PHR threshold, if the PHR value is greater than the PHR threshold, the current OI threshold is adjusted down, and if the PHR value is less than the PHR threshold, the current OI threshold is adjusted up. For another example, an average value of the PHR values received within the set time period is calculated, the average value is compared with a preset PHR threshold, if the average value is larger than the PHR threshold, the current OI threshold is adjusted to be lower, and if the average value is smaller than the PHR threshold, the current OI threshold is adjusted to be higher. Any method for adjusting the threshold of the OI according to the PHR value reported by the terminal can achieve the purpose of the invention and is within the protection scope of the invention.
Preferably, in order to make the OI threshold adjustment decision more accurate, after the access network device determines that preset OI threshold adjustment conditions are met and before the current OI threshold of the cell is adjusted, the access network device sends OI threshold adjustment decision information made according to the set OI threshold adjustment rule to an operation and maintenance (O & M) device to which the access network device belongs; the operation maintenance equipment acquires cell related information, makes a new OI threshold adjustment decision according to the cell related information and OI threshold adjustment decision information sent by the access network equipment, and sends the new OI threshold adjustment decision information to the access network equipment; and the access network equipment adjusts the decision information according to the OI threshold value sent by the operation maintenance equipment, and adjusts the current OI threshold value of the cell. Here, the cell-related information includes: the terminal distribution information in the cell, the service load information of the cell adjacent to the cell, and the interference tolerance of the cell adjacent to the cell. And the service load information of the adjacent cell and the interference tolerance of the adjacent cell are the adjacent cell related information of the cell. This is illustrated below:
the first embodiment is as follows: and the O & M equipment makes a new OI threshold value adjustment decision according to the terminal distribution information in the current cell and the OI threshold value adjustment decision information sent by the access network equipment.
Specifically, if the adjustment decision of the OI threshold sent by the access network equipment is to reduce the current OI threshold of the cell, judging whether the proportion of the number of terminals currently located in the edge area of the cell to the total number of terminals in the cell exceeds a preset proportion threshold; when the proportion of the number of terminals in the edge area of the cell to the total number of terminals in the cell does not exceed the preset proportion threshold, making a new decision for adjusting the OI threshold as follows: adjusting the current OI threshold of the cell to be low; if the ratio of the number of terminals in the edge area of the cell to the total number of terminals in the cell exceeds the preset ratio threshold, it indicates that most of the UEs in the cell are concentrated on the edge, and the cause of the low PHR distribution level may be the location distribution of the UEs, and then a new OI threshold adjustment decision is made: the OI threshold is not adjusted.
If the adjustment decision of the OI threshold sent by the access network equipment is to increase the current OI threshold of the cell, judging whether the proportion of the number of terminals currently positioned in the central area of the cell to the total number of terminals in the cell exceeds a preset proportion threshold or not; when the proportion of the number of terminals in the central area of the cell to the total number of terminals in the cell does not exceed the preset proportion threshold, making a new decision for adjusting the OI threshold as follows: the current OI threshold of the cell is adjusted to be high; if the ratio of the number of terminals in the central area to the total number of terminals in the cell exceeds the preset ratio threshold, it indicates that most of the UEs in the cell are concentrated in the center, and the reason that the PHR distribution level is high may be due to the location distribution of the UEs, and then a new decision for adjusting the OI threshold is made as follows: the OI threshold is not adjusted.
Example two: and the O & M equipment makes a new OI threshold value adjustment decision according to the service load information of the cell and the OI threshold value adjustment decision information sent by the access network equipment.
Specifically, when the OI threshold adjustment decision sent by the access network device is to adjust the current OI threshold of the cell up or down, it is determined whether the service load of the current cell is within a preset load threshold, and if so, a new OI threshold adjustment decision is made as follows: adjusting the current OI threshold of the cell to be high or low; otherwise, a new OI threshold adjustment decision is made as: for example, the OI threshold adjustment decision information sent by the access network equipment includes the OI threshold adjustment range that the OI threshold is adjusted from the original 8db to 5db, and the new OI threshold adjustment decision may adjust the OI threshold from the original 8db to 6 db.
And thirdly, the O & M equipment makes a new OI threshold adjustment decision according to the service load information of the adjacent cell and the OI threshold adjustment decision information sent by the access network equipment.
Specifically, when the OI threshold adjustment decision sent by the access network device is to adjust the current OI threshold of the cell up or down, it is determined whether the service load of the neighboring cell of the current cell is within a preset load threshold, and if so, a new OI threshold adjustment decision is made as follows: adjusting the current OI threshold of the cell to be high or low; otherwise, a new OI threshold adjustment decision is made as: not adjusting the OI threshold or changing the magnitude of adjusting the OI threshold.
Example four: and the O & M device makes a new OI threshold value adjustment decision according to the interference tolerance of the adjacent cell and the OI threshold value adjustment decision information sent by the access network device.
Specifically, when the OI threshold adjustment decision sent by the access network device is to adjust the current OI threshold of the cell up or down, it is determined whether the OI threshold adjusted according to the OI threshold adjustment decision sent by the access network device does not exceed an interference tolerance (IoT) value of the neighboring cell, and if so, a new OI threshold adjustment decision is made: adjusting the current OI threshold of the cell to be high or low; otherwise, a new OI threshold adjustment decision is made as: not adjusting the OI threshold or changing the magnitude of adjusting the OI threshold.
The access network equipment may send the probability distribution statistical result of the PHR value to the operation and maintenance equipment to which the access network equipment belongs after determining that the preset OI threshold adjustment condition is met and before adjusting the current OI threshold of the cell; the operation maintenance equipment acquires cell related information, makes an OI threshold value adjustment decision according to the cell related information and the statistical result of the probability distribution, and sends the OI threshold value adjustment decision information to access network equipment; and the access network equipment adjusts the current OI threshold of the cell according to the OI threshold adjustment decision information sent by the operation maintenance equipment. Here, the cell-related information includes: the terminal distribution information in the cell, the service load information of the cell adjacent to the cell, and the interference tolerance of the cell adjacent to the cell. And the service load information of the adjacent cell and the interference tolerance of the adjacent cell are the adjacent cell related information of the cell. This is illustrated below:
example five: and the O & M equipment makes OI threshold value adjustment decision according to the probability distribution statistical result of the PHR value and the terminal distribution information in the current cell.
Specifically, if the current OI threshold of the cell needs to be reduced according to the probability distribution statistical result of the PHR value, whether the proportion of the number of terminals currently located in the edge area of the cell to the total number of terminals in the cell exceeds a preset proportion threshold is judged; when the proportion of the number of terminals in the edge area of the cell to the total number of terminals in the cell does not exceed the preset proportion threshold, making an OI threshold adjustment decision as follows: adjusting the current OI threshold of the cell to be low; if the ratio of the number of terminals in the edge area of the cell to the total number of terminals in the cell exceeds the preset ratio threshold, it is indicated that most of the UEs in the cell are concentrated on the edge, and the reason that the PHR distribution level is low may be due to the location distribution of the UEs, and then the OI threshold adjustment decision is made as follows: the OI threshold is not adjusted.
If the current OI threshold value of the cell needs to be increased according to the probability distribution statistical result of the PHR value, judging whether the proportion of the number of terminals currently positioned in the central area of the cell to the total number of terminals in the cell exceeds a preset proportion threshold value or not; when the proportion of the number of terminals in the central area of the cell to the total number of terminals in the cell does not exceed a preset proportion threshold, making an OI threshold adjustment decision as follows: the current OI threshold of the cell is adjusted to be high; if the ratio of the number of terminals in the central area to the total number of terminals in the cell exceeds a preset ratio threshold, it indicates that most of the UEs in the cell are concentrated in the center, and the reason that the PHR distribution level is high may be due to the location distribution of the UEs, and then, an OI threshold adjustment decision is made as follows: the OI threshold is not adjusted.
Example six: and the O & M equipment makes OI threshold value adjustment decision according to the probability distribution statistical result of the PHR value and the service load information of the cell.
Specifically, when determining that the current OI threshold of the cell needs to be adjusted up or down according to the probability distribution statistical result of the PHR value, judging whether the service load of the current cell is within a preset load threshold, if so, making an OI threshold adjustment decision as follows: adjusting the current OI threshold of the cell to be high or low; otherwise, an OI threshold adjustment decision is made as: not adjusting the OI threshold or changing the magnitude of adjusting the OI threshold.
And seventhly, the O & M equipment makes OI threshold value adjustment decision according to the probability distribution statistical result of the PHR value and the service load information of the adjacent cell.
Specifically, when determining that the current OI threshold of a cell needs to be adjusted up or down according to the probability distribution statistical result of the PHR value, determining whether the service load of the neighboring cell of the current cell is within a preset load threshold, if so, making an OI threshold adjustment decision as follows: adjusting the current OI threshold of the cell to be high or low; otherwise, an OI threshold adjustment decision is made as: not adjusting the OI threshold or changing the magnitude of adjusting the OI threshold.
Example eight: and the O & M equipment makes OI threshold adjustment decision according to the probability distribution statistical result of the PHR value and the interference tolerance of the adjacent cell.
Specifically, when determining that the current OI threshold of the cell needs to be adjusted up or down according to the probability distribution statistical result of the PHR value, determining whether the OI threshold adjusted according to the probability distribution statistical result does not exceed an interference tolerance (IoT) value of an adjacent cell, if so, making an OI threshold adjustment decision as follows: adjusting the current OI threshold of the cell to be high or low; otherwise, an OI threshold adjustment decision is made as: not adjusting the OI threshold or changing the magnitude of adjusting the OI threshold.
Preferably, in order to make an OI threshold adjustment decision more accurately, before counting the PHR values received within the set time period, the PHR value reported by the terminal located in the cell edge area and/or the terminal whose service request bandwidth meets the preset bandwidth requirement may be selected from the PHR values received within the set time period, and then the probability distribution of the selected PHR value may be counted.
For the UE closer to the access network device, the reported PHR value is usually a positive value due to its smaller path loss, and the reported PHR values of these UEs cannot directly indicate whether the OI threshold is set to be appropriate, so that when the probability distribution of the PHR value is counted, only the PHR reported by the edge user can be counted. Moreover, when the probability distribution of the PHR value is counted, the situation that the service request bandwidth of the UE is very small and the edge user does not need to use all the transmission power of the UE may occur, and the PHR value at this time cannot be used to reflect whether the setting of the OI threshold is reasonable or not, so when the probability distribution of the PHR value is counted, the PHR value in such a scenario may be removed.
Preferably, before the OI threshold adjustment decision information made by the operation maintenance equipment to which the access network equipment belongs is sent to the access network equipment, the operation maintenance equipment sends the OI threshold adjustment decision information to other operation maintenance equipment; and the other operation and maintenance equipment determines whether the OI threshold is allowed to be adjusted or not according to the received OI threshold adjustment decision information, the service load information, the interference tolerance and the like of the cell managed by the operation and maintenance equipment, and the operation and maintenance equipment to which the access network equipment belongs sends the OI threshold adjustment decision information to the access network equipment when the other operation and maintenance equipment allows the OI threshold to be adjusted.
The OI threshold adjustment decision information includes adjustment decision information (e.g., adjusted up or down), OI threshold adjustment magnitude information (e.g., adjusted up by 5db or adjusted down by 5db), and so on. The specific method for determining whether to allow adjustment of the OI threshold value according to the OI threshold value adjustment decision information and the service load information by other operation and maintenance devices is to judge whether to influence cells managed by other operation and maintenance devices after adjusting the OI threshold value according to the OI threshold value adjustment amplitude information in the OI threshold value adjustment decision information, if so, not allow adjustment of the OI threshold value, and otherwise, allow adjustment of the OI threshold value. The judgment whether the influence on the cells managed by other operation and maintenance equipment is generated can be determined according to a preset judgment rule.
Referring to fig. 3, an embodiment of the present invention provides a system for adjusting an OI threshold, where the system includes:
the terminal 30 is configured to report a PHR value to the access network device, where the PHR value is a difference between a transmission power of the terminal and an upper limit of the transmission power calculated by the terminal;
and the access network device 31 is configured to adjust the current OI threshold of the cell according to the PHR value reported by the terminal and received within the set time period. The access network device may specifically be a wireless access device such as a base station.
The access network device 31 is configured to:
counting the probability distribution of the PHR values received in the set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result; and when determining that the preset OI threshold adjustment condition is met, adjusting the current OI threshold of the cell.
As an embodiment, the access network device 31 is configured to:
after determining that preset OI threshold adjustment conditions are met and before adjusting the current OI threshold of the cell, sending OI threshold adjustment decision information made according to a set OI threshold adjustment rule to first operation and maintenance equipment to which the access network equipment belongs; adjusting the current OI threshold of the cell according to OI threshold adjustment decision information sent by first operation maintenance equipment;
the system further comprises:
the first operation maintenance device 32 is configured to, after receiving the OI threshold adjustment decision information sent by the access network device, obtain neighboring cell related information of the cell, make a new OI threshold adjustment decision according to the neighboring cell related information and the OI threshold adjustment decision information, and send the new OI threshold adjustment decision information to the access network device.
As another embodiment, the access network device 31 is configured to:
after determining that preset OI threshold adjustment conditions are met and before adjusting the current OI threshold of the cell, sending the statistical result of the probability distribution to first operation and maintenance equipment to which the access network equipment belongs; adjusting the current OI threshold of the cell according to OI threshold adjustment decision information sent by first operation maintenance equipment;
the system further comprises:
the first operation maintenance device 32 is configured to obtain neighboring cell related information of the cell, make an OI threshold adjustment decision according to the neighboring cell related information and the statistical result of the probability distribution, and send the OI threshold adjustment decision information to the access network device.
The first operation and maintenance device 32 is also configured to:
before transmitting OI threshold value adjustment decision information to the access network equipment, transmitting the OI threshold value adjustment decision information to second operation maintenance equipment; allowing the second operation maintenance equipment to adjust the current OI threshold of the cell, and sending OI threshold adjustment decision information to the access network equipment;
the system further comprises:
and a second operation and maintenance device 33, configured to determine whether to allow adjustment of the current OI threshold of the cell according to the OI threshold adjustment decision information sent by the first operation and maintenance device and the traffic load information of the cell managed by the second operation and maintenance device.
The invention is described in the following with reference to the above system in a specific embodiment:
the first embodiment is as follows:
referring to FIG. 4A, in this embodiment, O is not required&M participates, and the OI threshold value adjusting process is only completed in the base station; the base station of the cell has set a PHR threshold value TH according to the uplink IoTPHR，THPHRThe setting principle of (2) is to ensure that only no more than 5% of UEs in the system do not meet the requirement of the uplink IoT, specifically as follows:
step S01: the base station receives PHR values reported by UE in a cell within 1 day by taking 1 day as a statistical period;
step S02: the base station performs PHR smoothing for each UE, specifically, if the UE is configured to perform PHR smoothingiIf the number of reporting PHR values in the statistical period is N, the average value of all PHR values reported by the UE can be calculated by the following formula:
step S03, the base station performs PHR reporting statistics, specifically, the average value of the PHR values of the UE obtained by calculation is sorted and accumulated according to the sequence from big to small to form a CDF curve, and an abscissa value PHR0 of a point with an ordinate value of 5% on the CDF curve is determined;
step S04: PHR0 is compared with a predetermined threshold value THPHRAnd comparing, and if the comparison results are not consistent, adjusting the OI threshold. Specifically, if PHR0 > THPHRIf the OI threshold of the cell is set too low, then TH1 and TH2 are adjusted up according to a certain rule, for example, TH1 and TH2 are adjusted so that TH1 is TH1+1dB, and TH2 is TH2+2 dB; or TH1 ═ TH1+1/4 ═ TH (TH)PHR-PHR0)，TH2＝TH2+1/2*(THPHR-PHR0)。
Example two:
referring to fig. 4B, in this embodiment, the OI threshold is adjusted based on the PHR value reported by the cell edge user, and the adjustment of the OI threshold needs the participation of O & M, which is specifically as follows:
step S11: setting a statistical period timer to be 1 week, and receiving a PHR value reported by UE in a cell before the timer is overtime; and after receiving the PHR value reported by the UE, distinguishing whether the UE is a cell center user or a cell edge user according to the current state information of the UE. If the UE is a cell center user, the PHR value reported by the UE at this time is not stored, and meanwhile, a PHR reporting frequency counter is not accumulated; and if the UE is a cell edge user, storing the PHR value reported by the UE this time, and accumulating a PHR reporting frequency counter.
Step S12: after the timer of the statistical period is overtime, performing PHR smoothing on each UE, wherein the specific manner may be the same as that in embodiment 1;
step S13: performing PHR reporting statistics by the base station, specifically, sequencing and accumulating the average values of PHR values of the UE obtained by calculation when the PHR reporting is smooth according to the sequence from large to small to form a CDF curve, and determining an abscissa value PHR0 of a point on the CDF curve, wherein the ordinate value of the point is 20%; PHR0 is compared with a predetermined threshold value THPHRComparing and reporting the comparison result to O& M；
Step S14: and the O & M determines whether to adjust the current OI threshold of the cell and the adjustment amplitude according to the result reported by the base station and the related information such as the service load, the interference tolerance and the like of the adjacent cell, informs the base station of the OI adjustment decision result, and the base station adjusts the OI threshold according to the received notice.
Example three:
referring to fig. 4C, in this embodiment, OI threshold adjustment decision information needs to be interacted between different O & M, which is specifically as follows:
step S21-step S23: the same as the steps S11 to S13;
step S24: the O & M decides according to the result reported by the base station and simultaneously combines the service load, the interference tolerance and other related information of the adjacent cell, determines whether to adjust the current cell and the adjustment amplitude, and sends the OI threshold adjustment decision information to another O & M when determining that the OI threshold needs to be adjusted;
step S25: after receiving the OI threshold adjustment decision information, the other O & M determines whether the O & M which transmits the OI threshold adjustment decision information is allowed to perform OI threshold adjustment or not according to the OI threshold adjustment decision information and the service load information of the cell managed by the O & M, and transmits a determination result to the O & M;
step S26: if the O & M receives a notice which is sent by another O & M and allows the O & M to adjust the OI threshold value, adjusting the current OI threshold value of the cell; and if the O & M receives a notice which is sent by another O & M and does not allow the O & M to adjust the OI threshold value, the O & M does not adjust the OI threshold value.
Referring to fig. 5, an embodiment of the present invention provides an access network device, which may be applied in a system for adjusting an OI threshold, where the access network device includes:
a receiving unit 50, configured to receive a PHR value reported by a terminal, where the PHR value is a difference between a transmission power of the terminal and an upper limit of the transmission power, which is calculated by the terminal;
an adjusting unit 51, configured to adjust the current OI threshold of the cell according to the PHR value received by the receiving unit within a set time period.
The adjusting unit 51 includes:
a counting unit 60, configured to count probability distribution of the PHR values received in the set time period, and determine whether a preset OI threshold adjustment condition is met according to a statistical result;
and the execution unit 61 is configured to adjust the current OI threshold of the cell when the statistical unit determines that a preset OI threshold adjustment condition is met.
The statistical unit 60 includes:
a smoothing unit 70, configured to determine, for a terminal that reports a PHR value in the cell, an average value of PHR values reported by the terminal in the set time period;
a curve calculating unit 71, configured to form a cumulative distribution function CDF curve according to each average value determined by the smoothing unit, where a first coordinate of a point on the CDF curve is a PHR value, and a second coordinate is a ratio of the number of terminals having values less than or equal to the PHR value to the total number of terminals reporting the PHR value in the cell;
a comparing unit 72, configured to determine a first coordinate value of a point on the CDF curve where the second coordinate value is a first set numerical value, compare the first coordinate value with a preset first PHR threshold, and determine that a preset OI threshold adjustment condition is met if the comparison result indicates that the first coordinate value is inconsistent with the first PHR threshold.
The execution unit 61 is configured to:
when the first coordinate value is smaller than a first PHR threshold value, the current OI threshold value of the cell is adjusted to be low; and when the first coordinate value is larger than a first PHR threshold value, increasing the current OI threshold value of the cell. When the first coordinate is a transverse coordinate, the second coordinate is a longitudinal coordinate; when the first coordinate is a vertical coordinate, the second coordinate is a horizontal coordinate.
The access network device further includes:
a first sending unit 52, configured to send OI threshold adjustment decision information made according to the set OI threshold adjustment rule to a first operation and maintenance device to which the access network device belongs;
the executing unit 61 is configured to receive a new OI threshold adjustment decision made by the first operation and maintenance device according to the neighbor cell related information of the cell and the OI threshold adjustment decision information, and adjust the current OI threshold of the cell according to the new OI threshold adjustment decision.
The access network device further includes:
a second sending unit 53, configured to send the statistical result of the probability distribution to the first operation and maintenance device to which the access network device belongs;
the executing unit 61 is configured to receive an OI threshold adjustment decision made by the first operation and maintenance device according to the neighbor cell related information of the cell and the statistical result of the probability distribution, and adjust the current OI threshold of the cell according to the OI threshold adjustment decision.
The execution unit 61 is further configured to:
before the current OI threshold of the cell is reduced, judging whether the first coordinate value is smaller than a second PHR threshold, and reducing the current OI threshold of the cell when the first coordinate value is smaller than the second PHR threshold. Before the current OI threshold of the cell is increased, judging whether the first coordinate value is larger than a second PHR threshold, and increasing the current OI threshold of the cell when the first coordinate value is larger than the second PHR threshold; the second PHR threshold is greater than the first PHR threshold.
The adjusting unit 51 further includes:
a selecting unit 62, configured to select, from the PHR values received in the set time period, a PHR value reported by a terminal located in the cell edge area and/or a terminal whose service request bandwidth meets a preset bandwidth requirement;
the statistical unit 60 is configured to perform statistics on the probability distribution of the PHR value selected by the selecting unit.
In conclusion, the beneficial effects of the invention include:
in the scheme provided by the embodiment of the invention, the OI threshold of the cell is dynamically adjusted by the access network equipment according to the PHR value reported by the terminal and reflecting the difference value between the transmitting power of the terminal and the transmitting power upper limit calculated by the terminal, so that the phenomena of overlarge system interference or low capacity can be effectively avoided, and the instability and resource waste of the system are avoided.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (19)
1. A method of adjusting an overload indication, OI, threshold, the method comprising:
the access network equipment receives a Power Headroom Report (PHR) value reported by a terminal in a cell, wherein the PHR value is a difference value between the transmitting power of the terminal and the transmitting power upper limit of the terminal, which is calculated by the terminal;
adjusting the current OI threshold of the cell according to the PHR value received within the set time period, specifically including: counting the probability distribution of the PHR values received in the set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result; when the preset OI threshold value adjusting condition is determined to be met, adjusting the current OI threshold value of the cell; or selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
2. The method of claim 1, wherein the counting the probability distribution of the PHR values received within the set time period, and the determining whether a preset OI threshold adjustment condition is satisfied according to the statistical result comprises:
for the terminal reporting the PHR value in the cell, determining the average value of the PHR values reported by the terminal in the set time period;
forming a CDF curve according to the determined average values, wherein a first coordinate of a point on the CDF curve is a PHR value, and a second coordinate is the proportion of the number of terminals with the PHR value less than or equal to the PHR value to the total number of terminals with the PHR value reported in the cell;
and determining a first coordinate value of a point of which the second coordinate value is a first set numerical value on the CDF curve, comparing the first coordinate value with a preset first PHR threshold value, and if the comparison result shows that the first coordinate value is inconsistent with the first PHR threshold value, determining that a preset OI threshold value adjustment condition is met.
3. The method of claim 2, wherein the adjusting the cell's current OI threshold comprises:
if the first coordinate value is smaller than a first PHR threshold value, the current OI threshold value of the cell is reduced; and if the first coordinate value is larger than a first PHR threshold value, increasing the current OI threshold value of the cell.
4. The method of claim 3,
before turning down the current OI threshold of the cell, the method further comprises: judging whether the first coordinate value is smaller than a second PHR threshold value;
the adjusting the current OI threshold of the cell down comprises: when the first coordinate value is smaller than a second PHR threshold value, the current OI threshold value of the cell is adjusted to be low;
before the current OI threshold of the cell is adjusted up, the method further comprises: judging whether the first coordinate value is larger than a second PHR threshold value;
the adjusting up the current OI threshold of the cell comprises: when the first coordinate value is larger than a second PHR threshold value, increasing the current OI threshold value of the cell; the second PHR threshold is greater than the first PHR threshold.
5. The method of claim 1, wherein after determining that a preset OI threshold adjustment condition is met and before adjusting the cell's current OI threshold, the method further comprises:
the access network equipment sends OI threshold value adjustment decision information made according to the set OI threshold value adjustment rule to operation maintenance equipment to which the access network equipment belongs;
the operation maintenance equipment acquires the adjacent cell related information of the cell, makes a new OI threshold adjustment decision according to the adjacent cell related information and the OI threshold adjustment decision information, and sends the new OI threshold adjustment decision information to the access network equipment;
the adjusting the current OI threshold of the cell comprises:
and the access network equipment adjusts the current OI threshold of the cell according to the OI threshold adjustment decision information sent by the operation maintenance equipment.
6. The method of claim 1, wherein after determining that a preset OI threshold adjustment condition is met and before adjusting the cell's current OI threshold, the method further comprises:
the access network equipment sends the statistical result of the probability distribution to operation maintenance equipment to which the access network equipment belongs;
the operation maintenance equipment acquires the adjacent cell related information of the cell, makes an OI threshold value adjustment decision according to the adjacent cell related information and the statistical result of the probability distribution, and sends the OI threshold value adjustment decision information to the access network equipment;
the adjusting the current OI threshold of the cell comprises:
and the access network equipment adjusts the current OI threshold of the cell according to the OI threshold adjustment decision information sent by the operation maintenance equipment.
7. The method of claim 5 or 6, wherein before the operation and maintenance device sends OI threshold adjustment decision information to the access network device, the method further comprises:
the operation maintenance equipment sends the OI threshold value adjustment decision information to other operation maintenance equipment;
the other operation maintenance equipment determines whether to allow the adjustment of the current OI threshold of the cell according to the OI threshold adjustment decision information and the service load information of the cell managed by the other operation maintenance equipment;
the operation maintenance equipment sends OI threshold adjustment decision information to the access network equipment, and the operation maintenance equipment comprises the following steps:
and when the other operation and maintenance equipment allows to adjust the current OI threshold of the cell, the operation and maintenance equipment sends OI threshold adjustment decision information to the access network equipment.
8. The method of claim 1, wherein prior to counting a probability distribution of PHR values received within the set time period, the method further comprises:
selecting a PHR value reported by a terminal positioned in the edge area of the cell and/or a terminal with a service request bandwidth meeting the preset bandwidth requirement from the PHR values received in the set time period;
the counting the probability distribution of the PHR values received in the set time period comprises:
and counting the probability distribution of the selected PHR values.
9. A system for adjusting an overload indication, OI, threshold, the system comprising:
the terminal is used for reporting a Power Headroom Report (PHR) value to the access network equipment, wherein the PHR value is a difference value between the transmitting power of the terminal and an upper limit of the transmitting power calculated by the terminal;
the access network device is configured to adjust a current OI threshold of the cell according to a PHR value reported by a terminal received within a set time period, and specifically includes: counting the probability distribution of the PHR values received in the set time period, and determining whether preset OI threshold adjustment conditions are met or not according to the counting result; when the preset OI threshold value adjusting condition is determined to be met, adjusting the current OI threshold value of the cell; or selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
10. The system of claim 9, wherein the access network device is to:
after determining that preset OI threshold adjustment conditions are met and before adjusting the current OI threshold of the cell, sending OI threshold adjustment decision information made according to a set OI threshold adjustment rule to first operation and maintenance equipment to which the access network equipment belongs; adjusting the current OI threshold of the cell according to OI threshold adjustment decision information sent by first operation maintenance equipment;
the system further comprises:
and the first operation maintenance equipment is used for acquiring the adjacent cell related information of the cell after receiving the OI threshold adjustment decision information sent by the access network equipment, making a new OI threshold adjustment decision according to the adjacent cell related information and the OI threshold adjustment decision information, and sending the new OI threshold adjustment decision information to the access network equipment.
11. The system of claim 9, wherein the access network device is to:
after determining that preset OI threshold adjustment conditions are met and before adjusting the current OI threshold of the cell, sending the statistical result of the probability distribution to first operation and maintenance equipment to which the access network equipment belongs; adjusting the current OI threshold of the cell according to OI threshold adjustment decision information sent by first operation maintenance equipment;
the system further comprises:
and the first operation maintenance equipment is used for acquiring the adjacent cell related information of the cell, making an OI threshold value adjustment decision according to the adjacent cell related information and the statistical result of the probability distribution, and sending the OI threshold value adjustment decision information to the access network equipment.
12. The system of claim 10 or 11, wherein the first operation maintenance device is further configured to:
before transmitting OI threshold value adjustment decision information to the access network equipment, transmitting the OI threshold value adjustment decision information to second operation maintenance equipment; allowing the second operation maintenance equipment to adjust the current OI threshold of the cell, and sending OI threshold adjustment decision information to the access network equipment;
the system further comprises:
and the second operation and maintenance device is used for determining whether to allow the adjustment of the current OI threshold of the cell according to the OI threshold adjustment decision information sent by the first operation and maintenance device and the service load information of the cell managed by the second operation and maintenance device.
13. An access network device, characterized in that the access network device comprises:
a receiving unit, configured to receive a power headroom report PHR value reported by a terminal, where the PHR value is a difference between a transmission power of the terminal and an upper limit of the transmission power, which is calculated by the terminal;
the adjusting unit comprises a counting unit and an executing unit, wherein the counting unit is used for counting the probability distribution of the PHR value received in a set time period and determining whether a preset OI threshold adjusting condition is met or not according to a counting result; the execution unit is used for adjusting the current OI threshold of the cell when the statistical unit determines that a preset OI threshold adjusting condition is met; or,
the adjusting unit is used for: and selecting the PHR value received last time from the PHR values received in the set time period or calculating the average value of the PHR values received in the set time period, and comparing the PHR value or the average value received last time with a preset PHR threshold value to adjust the current OI threshold value of the cell.
14. The access network device of claim 13, wherein the statistics unit comprises:
a smoothing unit, configured to determine, for a terminal that reports a PHR value in the cell, an average value of PHR values reported by the terminal in the set time period;
a curve solving unit, configured to form a cumulative distribution function CDF curve according to each average value determined by the smoothing unit, where a first coordinate of a point on the CDF curve is a PHR value, and a second coordinate is a ratio of the number of terminals having values less than or equal to the PHR value to the total number of terminals reporting the PHR value in the cell;
and the comparison unit is used for determining a first coordinate value of a point on the CDF curve, wherein the second coordinate value of the point is a first set numerical value, comparing the first coordinate value with a preset first PHR threshold value, and determining that a preset OI threshold value adjustment condition is met if the comparison result shows that the first coordinate value is inconsistent with the first PHR threshold value.
15. The access network device of claim 14, wherein the execution unit is to:
when the first coordinate value is smaller than a first PHR threshold value, the current OI threshold value of the cell is adjusted to be low; and when the first coordinate value is larger than a first PHR threshold value, increasing the current OI threshold value of the cell.
16. The access network device of claim 15, wherein the execution unit is further to:
before the current OI threshold of the cell is reduced, judging whether the first coordinate value is smaller than a second PHR threshold, and reducing the current OI threshold of the cell when the first coordinate value is smaller than the second PHR threshold;
before the current OI threshold of the cell is increased, judging whether the first coordinate value is larger than a second PHR threshold, and increasing the current OI threshold of the cell when the first coordinate value is larger than the second PHR threshold; the second PHR threshold is greater than the first PHR threshold.
17. The access network device of claim 13, wherein the access network device further comprises:
a first sending unit, configured to send OI threshold adjustment decision information made according to a set OI threshold adjustment rule to a first operation and maintenance device to which the access network device belongs;
and the execution unit is used for receiving a new OI threshold adjustment decision made by the first operation and maintenance equipment according to the neighbor cell related information of the cell and the OI threshold adjustment decision information, and adjusting the current OI threshold of the cell according to the new OI threshold adjustment decision.
18. The access network device of claim 13, wherein the access network device further comprises:
a second sending unit, configured to send the statistical result of the probability distribution to the first operation and maintenance device to which the access network device belongs;
and the execution unit is used for receiving an OI threshold adjustment decision made by the first operation and maintenance device according to the neighbor cell related information of the cell and the statistical result of the probability distribution, and adjusting the current OI threshold of the cell according to the OI threshold adjustment decision.
19. The access network device of claim 13, wherein the adjustment unit further comprises:
a selecting unit, configured to select, from the PHR values received in the set time period, a PHR value reported by a terminal located in the cell edge area and/or a terminal whose service request bandwidth meets a preset bandwidth requirement;
and the statistical unit is used for counting the probability distribution of the PHR value selected by the selection unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910080972 CN101854636B (en) | 2009-03-30 | 2009-03-30 | Confirming method, system and equipment of OI (Overload Indication) threshold value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910080972 CN101854636B (en) | 2009-03-30 | 2009-03-30 | Confirming method, system and equipment of OI (Overload Indication) threshold value |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101854636A CN101854636A (en) | 2010-10-06 |
| CN101854636B true CN101854636B (en) | 2013-09-04 |
Family
ID=42805842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910080972 Active CN101854636B (en) | 2009-03-30 | 2009-03-30 | Confirming method, system and equipment of OI (Overload Indication) threshold value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101854636B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102724677B (en) * | 2012-07-02 | 2015-03-11 | 厦门大学 | Overload indication threshold value dynamic adjusting system and adjusting method |
| CN103338521B (en) * | 2013-06-20 | 2016-05-25 | 中国联合网络通信集团有限公司 | Inter-cell interference coordination method and device |
| CN113938992B (en) * | 2020-07-13 | 2023-08-22 | 中国联合网络通信集团有限公司 | Threshold determining method and device |
| CN112004249B (en) * | 2020-08-10 | 2022-03-18 | 中国联合网络通信集团有限公司 | Method and device for determining channel resource load distribution state |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747359A (en) * | 2005-09-12 | 2006-03-15 | 北京邮电大学 | Self-adaptive rate control based on load in mobile telecommunication system |
| CN101272549A (en) * | 2008-05-09 | 2008-09-24 | 中兴通讯股份有限公司 | Relay network over-loading indication reporting method |
| CN101299891A (en) * | 2008-06-25 | 2008-11-05 | 中兴通讯股份有限公司 | Method for transmitting overload indicator report and method for encoding physics resource block interference state |
-
2009
- 2009-03-30 CN CN 200910080972 patent/CN101854636B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747359A (en) * | 2005-09-12 | 2006-03-15 | 北京邮电大学 | Self-adaptive rate control based on load in mobile telecommunication system |
| CN101272549A (en) * | 2008-05-09 | 2008-09-24 | 中兴通讯股份有限公司 | Relay network over-loading indication reporting method |
| CN101299891A (en) * | 2008-06-25 | 2008-11-05 | 中兴通讯股份有限公司 | Method for transmitting overload indicator report and method for encoding physics resource block interference state |
Non-Patent Citations (2)
| Title |
|---|
| Nokia Siemens Networks, Nokia.3GPP TSG RAN WG1 #50bis meeting，R1-074349，Overload Indicator handling for LTE.《3GPP TSG RAN WG1 #50bis meeting，R1-074349，Overload Indicator handling for LTE》.2007,全文. * |
| NTT DoCoMo, NEC, Panasonic, Sharp, Toshiba Corporation.3GPP TSG RAN WG1 Meeting #47bis,R1-070108,Transmission Power Control in E-UTRA Uplink.《3GPP TSG RAN WG1 Meeting #47bis,R1-070108,Transmission Power Control in E-UTRA Uplink》.2007,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101854636A (en) | 2010-10-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101854665B (en) | Method, device and system for controlling load of LTE system | |
| EP3101934B1 (en) | Interference control methods and apparatus therefor in an heterogeneous system | |
| KR101660351B1 (en) | Load balancing method and network control node | |
| EP2269415B1 (en) | Estimating and limiting inter-cell interference | |
| US8660092B2 (en) | Method and apparatus for handover in wireless communication system | |
| US8725079B2 (en) | System and method for determining the severity of interference in different areas of a cellular radio network and coordinating radio resource management features in response | |
| US8880088B2 (en) | Signalling for interference management in HETNETs | |
| US9980218B2 (en) | System and method for user terminal-aware cell switch-off | |
| WO2011119249A1 (en) | Uplink power control for channel aggregation in a communication network | |
| CN102625336B (en) | Interference management method and device in heterogenous network | |
| US20170134970A1 (en) | Network optimization method and apparatus, and base station | |
| CN102387525B (en) | Carrier wave configuring method, device and system | |
| TW201540108A (en) | Method and server for dynamically determining a reference signal (RS) power boost level | |
| CN111246531A (en) | Switching method and base station | |
| CN101854636B (en) | Confirming method, system and equipment of OI (Overload Indication) threshold value | |
| CN104640149A (en) | Self-adaptive cell expansion and bias adjusting method used in heterogeneous network | |
| US10555248B2 (en) | Method, system and devices for enabling a network node to perform a radio operation task in a telecommunication network | |
| US9363762B2 (en) | Method and device for determining transmission power | |
| JP2013192056A (en) | Base station, radio communication system, radio resource control method and program | |
| US20170272970A1 (en) | Network node and a method performed thereby for congenstion control of a radio base station | |
| EP2094037A1 (en) | Base station for a mobile network and method of operate a base station | |
| CN104244260B (en) | A kind of resource allocation methods and device | |
| US8761042B2 (en) | Method and system for indicating overload indicator report | |
| CN105379393B (en) | Coordinating multi-cell dispatching method and device | |
| CN111294346B (en) | VoLTE voice service optimization method and optimization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20110422 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20110422 Address after: 100191 Haidian District, Xueyuan Road, No. 40, Applicant after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100083 Haidian District, Xueyuan Road, No. 29, Applicant before: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210623 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |