CN109286935B - Resource coordination method, related equipment and computer readable storage medium - Google Patents
Resource coordination method, related equipment and computer readable storage medium Download PDFInfo
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Abstract
The invention provides a resource coordination method, related equipment and a computer readable storage medium, and relates to the technical field of communication. The method comprises the following steps: the base station calculates a first average correlation value between each first UE in a first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and other UEs in a second cell; the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects the first UE of which the first difference value is greater than or equal to a threshold value; and the base station selects a target UE corresponding to the largest first difference value from the first UEs with the first difference value being greater than or equal to the threshold value, and switches the target UE to the second cell. The embodiment of the invention can switch the first UE to the second cell with smaller average correlation value, thereby fully utilizing the resources of the first cell and the second cell and improving the effect of resource coordination.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a resource coordination method, a related device, and a computer readable storage medium.
Background
With the development of mobile communication technology, many base stations now start to use Multiple-Input Multiple-Output (MIMO) systems, and MIMO systems can support space division Multiple access (sdma) of the base station, i.e. increase channels for transmitting data, so as to increase the traffic throughput of the cell. Because multiple cells may be included in a base station, there is a coordination problem for the multiple cell resources. In the current technology, only when the resource utilization rate of a cell is very high, a part of User Equipment (UE) of the cell is coordinated to a neighboring cell, which results in that the resource utilization rate of the cell is too high, but the resource utilization rate of the neighboring cell is too low, so that the current resource coordination effect on a plurality of cells is poor.
Disclosure of Invention
The embodiment of the invention provides a resource coordination method, related equipment and a computer readable storage medium, which solve the problem of poor resource coordination effect of a plurality of cells.
The embodiment of the invention provides a resource coordination method, which comprises the following steps:
the base station calculates a first average correlation value between each first UE in a first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and all UEs in a second cell;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects the first UE of which the first difference value is greater than or equal to a threshold value;
and the base station selects a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to a threshold value, and switches the target UE to the second cell.
The embodiment of the invention also provides a resource coordination device, which comprises:
the computing module is used for computing a first average correlation value between each first UE in the first cell and other UEs in the first cell by the base station, and computing a second average correlation value between each first UE and all UEs in the second cell by the base station;
a selection module, configured to calculate a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and select a first UE whose first difference value is greater than or equal to a threshold value;
and the switching module is used for selecting a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to the threshold value by the base station, and switching the target UE to the second cell.
The embodiment of the invention also provides a base station, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the resource coordination method when executing the program.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps in the resource coordination method described above.
One of the above technical solutions has the following advantages or beneficial effects:
the base station calculates a first average correlation value between each first UE in the first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and other UEs in the second cell; then, calculating a first difference value between the first average correlation value and the second average correlation value of each first UE, and selecting the first UE with the first difference value being greater than or equal to a threshold value; and finally, selecting a target UE corresponding to the largest first difference value from the first UEs with the first difference value being greater than or equal to the threshold value, and switching the target UE to the second cell. Through the steps, the average correlation values of the first UE and other UEs in the first cell and the second cell are calculated, and the first UE is switched to the second cell with smaller average correlation value, so that the resources of the first cell and the second cell are fully utilized, and the effect of resource coordination is improved.
Drawings
Fig. 1 is a schematic flow chart of a resource coordination method according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating another resource coordination method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a resource coordination device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another resource coordination device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another resource coordination device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another resource coordination device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another resource coordination device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a resource coordination method, which includes the following steps:
in step S101, the base station calculates a first average correlation value (THp (i)) between each first UE in the first cell and other UEs in the first cell, and calculates a second average correlation value (THs (i)) between each first UE and other UEs in the second cell.
The base station may be a base station applying the MIMO system, where the base station may support the base station to perform space division multiple access operation, and may increase the service throughput of the cell.
The first UE may be a UE capable of performing space division multiple access operation, or may be another UE;
the first cell may be a cell where the primary carrier of the base station is located, and the second cell may be a cell where the secondary carrier of the base station is located.
Wherein, the base station can be a base station which is configured to support both uplink carrier aggregation (Carrier Aggregation, CA) and downlink CA; the base station may be a base station configured with only downstream CA. The specific type of the base station is not limited herein.
Where the correlation value refers to the degree of channel consistency between each first UE and the other UEs, and the first average correlation value (THp (i)) refers to the average value of the degree of channel consistency between each first UE and the other UEs. For example, UE1, UE2, UE3 and UE4 are included in the first cell. The correlation values of UE1 and UE2, UE1 and UE3, and UE1 and UE4 are calculated respectively, specifically, the base station determines the correlation values between the two UEs according to channel sounding reference signals (Sounding Reference Signal, SRS) reported by UE1, UE2, UE3 and UE4, and because different UEs are located at different positions, the transmitted SRS has a difference in direction angle or the like. And then calculating the average value of the three correlation values according to the three obtained correlation values, namely obtaining a first average correlation value (THp (i)) of the UE1 in the first cell. Specifically, if the correlation value between UE1 and UE2 is 0.3, the correlation value between UE1 and UE3 is 0.4, and the correlation value between UE1 and UE4 is 0.5, the first average correlation value is calculated to be (0.3+0.4+0.5)/3=0.4; or the correlation value between UE1 and UE2 is 0.4, the correlation value between UE1 and UE3 is 0.2, and the correlation value between UE1 and UE4 is 0.6, the first average correlation value may be calculated to be (0.4+0.2+0.6)/3=0.4. Similarly, the second average correlation value (THs (i)) of the first UE in the second cell is also obtained, and the specific process is not described herein.
Before step S101, the base station further determines whether or not the function of performing handover based on the correlation value is provided in the base station, and if so, performs the operations of step S101 and thereafter.
In step S102, the base station calculates a first difference (THp (i) -THs (i)) between the first average correlation value (THp (i)) of each first UE and the second average correlation value (THs (i)) of the first UE, and selects a first UE whose first difference (THp (i) -THs (i)) is greater than or equal to a threshold value (THd).
The value of the threshold value (THd) may be 0.1-0.3, preferably 0.2, and the specific value of the threshold value (THd) is not limited herein.
Optionally, before step S102, the method may further include:
the base station selects a first UE for space division multiple access operation;
the base station selects a first UE (DLCAUE) supporting only downlink CA from among first UEs performing space division multiple access operation.
Wherein, optionally, step S102 may include:
the base station calculates a first difference (THp (i) -THs (i)) between a first average correlation value (THp (i)) of each first UE (dlcue) supporting only downlink CA and a second average correlation value (THs (i)) of the first UE, and selects the first UE (dlcue) supporting only downlink CA, the first difference (THp (i) -THs (i)) being greater than or equal to a threshold value (THd).
Wherein, optionally, step S103 may include:
the base station selects a second target UE corresponding to the largest first difference value (THp (i) -THs (i)) from first UE (DLCAUE) which only supports downlink CA and has the first difference value (THp (i) -THs (i)) larger than or equal to a threshold value (THd), and switches the second target UE to the second cell.
In this embodiment, the UE that supports only the downlink CA among the UEs performing the space division multiple access operation is determined, and the UE is switched to the second cell, so that the effect of resource coordination can be more obvious.
Step S103, the base station selects a target UE corresponding to the largest first difference value (THp (i) -THs (i)) from the first UEs whose first difference values (THp (i) -THs (i)) are greater than or equal to a threshold value (THd), and switches the target UE to the second cell.
Wherein, the target UE is handed over to the second cell, and optionally, the steps may include:
the base station sends measurement configuration information of the second cell to a target UE;
and the base station receives a measurement report which is sent by the target UE and comprises measurement configuration information of the second cell, and switches the target UE to the second cell.
The measurement configuration information of the second cell comprises the number or the frequency point and other contents of the second cell, and the target UE measures the second cell according to the contents and sends a measurement report to the base station. And the base station switches the target UE to the second cell according to the measurement report. In this embodiment, the target UE performs measurement on the second cell, so that the target UE can be better switched to the second cell.
In this embodiment, the base station calculates a first average correlation value (THp (i)) between each first UE in the first cell and other UEs in the first cell, and calculates a second average correlation value (THs (i)) between each first UE and other UEs in the second cell; then, calculating a first difference (THp (i) -THs (i)) between the first average correlation value (THp (i)) and the second average correlation value (THs (i)) of each first UE, and selecting the first UE with the first difference (THp (i) -THs (i)) being greater than or equal to a threshold value (THd); and finally, selecting a target UE corresponding to the largest first difference value (THp (i) -THs (i)) from the first UEs with the first difference values (THp (i) -THs (i)) being larger than or equal to a threshold value (THd), and switching the target UE to the second cell. Through the steps, the average correlation values of the first UE performing space division multiple access operation and other UEs in the first cell and the second cell are calculated, and the first UE is switched to the second cell with smaller average correlation value, so that the resources of the first cell and the second cell are fully utilized, and the effect of resource coordination is improved.
As shown in fig. 2, an embodiment of the present invention provides another resource coordination method, which includes the following steps:
in step S201, the base station calculates a first average correlation value (THp (i)) between each first UE in the first cell and other UEs in the first cell, and calculates a second average correlation value (THs (i)) between each first UE and other UEs in the second cell.
In step S202, the base station calculates a first difference (THp (i) -THs (i)) between the first average correlation value (THp (i)) of each first UE and the second average correlation value (THs (i)) of the first UE, and selects a first UE whose first difference (THp (i) -THs (i)) is greater than or equal to a threshold value (THd).
In step S203, the base station selects a target UE corresponding to the largest first difference value (THp (i) -THs (i)) from the first UEs whose first difference value (THp (i) -THs (i)) is greater than or equal to the threshold value (THd), and counts the number of the first UEs whose first difference value (THp (i) -THs (i)) is greater than or equal to the threshold value (THd) as N.
In step S204, the base station calculates a total average correlation value (THmean (i)) according to the first average correlation values (THp (i)) of all the first UEs in the first cell, and obtains a maximum space fraction (Nmmax (i)) according to the total average correlation value (THmean (i)).
The first UE has a plurality of first average correlation values (THp (i)) in the first cell, and the first average correlation values (THp (i)) of the plurality of first UEs are averaged to obtain a total average correlation value (THmean (i)). And obtaining the maximum space fraction (Nmmax (i)) through table look-up according to the total average correlation value (THmean (i)). For example, when the total correlation value is 0, 0.1, 0.2 or 0.3, the maximum space fraction is 16; when the total correlation value is 0.4 or 0.5, the maximum space fraction is 13; when the total correlation value is 0.6 or 0.7, the maximum space fraction is 11; when the total correlation value is 0.8, the maximum space fraction is 9; when the total correlation value is 0.9, the maximum space fraction is 5. Through the steps, the numerical value of the maximum space fraction can be obtained clearly. Of course, if the total correlation value is calculated to be the two digits after the decimal point or the digits of the multiple digits after the decimal point, wherein the digits of the multiple digits after the decimal point comprise the digits of three digits and more than three digits after the decimal point, the digits can be rounded to obtain the digits of only one digit after the decimal point, and then the numerical value of the maximum space fraction is obtained through the corresponding relation.
In step S205, if the current space-division number in the first cell is greater than or equal to the maximum space-division number (Nmmax (i)), the base station calculates a second difference value (Nd) between the current space-division number and the maximum space-division number (Nmmax (i)), where the current space-division number is the number of UEs currently performing space-division multiple access operation.
In step S206, the base station selects the smallest value from the N, the preset handover limiting threshold (THh) and the second difference (Nd) as the number M of UEs to be handed over, where N and M are integers.
The preset handover limiting threshold (THh) may be any integer from 1 to 5, which is not limited herein. Where the expression of M can be denoted as m=min (min (N, nd), THh).
Step S207, the base station switches M first UE to the second cell.
Optionally, when the number of the first UEs with the statistical first difference (THp (i) -THs (i)) being greater than or equal to the threshold (THd) is N, adding the N first UEs to the statistical list. And the N first UEs are arranged from large to small according to the first average correlation value (THp (i)). In step S207, the base station switches the first M first UEs arranged from large to small in the statistical list according to the first average correlation value (THp (i)) to the second cell.
In this embodiment, M first UEs satisfying the first difference greater than or equal to the threshold may be handed over to the second cell, so that resources of the first cell and resources of the second cell may be further coordinated, and resources of both the first cell and the second cell may be fully utilized.
Optionally, step S207 may include:
the base station judges whether the resource utilization rate of the second cell reaches a target value;
and if the resource utilization rate of the second cell does not reach the target value, the base station switches M first UE to the second cell.
In this embodiment, the M first UEs are switched to the second cell by determining that the resource usage rate in the second cell does not reach the target value, so that it is ensured that the second cell does not cause resource utilization shortage of the second cell due to the switching of the M first UEs. Wherein the target value may be 70%.
As shown in fig. 3, an embodiment of the present invention provides a resource coordination apparatus 300, including:
a calculating module 301, configured to calculate a first average correlation value (THp (i)) between each first UE in a first cell and other UEs in the first cell, and calculate a second average correlation value (THs (i)) between each first UE and other UEs in the second cell.
A selection module 302, configured to calculate a first difference (THp (i) -THs (i)) between a first average correlation value (THp (i)) of each first UE and a second average correlation value (THs (i)) of the first UE, and select a first UE whose first difference (THp (i) -THs (i)) is greater than or equal to a threshold value (THd).
And a switching module 303, configured to select a target UE corresponding to the largest first difference value (THp (i) -THs (i)) from the first UEs whose first difference values (THp (i) -THs (i)) are greater than or equal to the threshold value (THd), and switch the target UE to the second cell.
Optionally, as shown in fig. 4, the switching module 303 includes:
a first statistics sub-module 3031, configured to count, by the base station, N, the number of first UEs whose first difference (THp (i) -THs (i)) is greater than or equal to the threshold value (THd).
A first calculation submodule 3032, configured to calculate a total average correlation value (THmean (i)) according to the first average correlation values (THp (i)) of all the first UEs in the first cell, and obtain a maximum space fraction (Nmmax (i)) according to the total average correlation value (THmean (i)).
A second calculating submodule 3033, configured to calculate, if the current space-division number in the first cell is greater than or equal to the maximum space-division number (Nmmax (i)), a second difference (Nd) between the current space-division number and the maximum space-division number (Nmmax (i)), where the current space-division number is the number of UEs currently performing the space-division multiple access operation.
A first selection submodule 3034, configured to select, from the N, the preset handover limiting threshold value (THh) and the second difference value (Nd), the smallest value as the number M of UEs to be handed over, where N and M are integers.
And the switching submodule 3035 is used for switching the M first UE to the second cell by the base station.
Optionally, as shown in fig. 5, the switching submodule 3035 includes:
a judging unit 30351, configured to judge whether the resource usage rate of the second cell reaches a target value by using the base station;
a first switching unit 30352, configured to switch M first UEs to the second cell if the resource usage rate of the second cell does not reach the target value.
Optionally, as shown in fig. 6, the resource coordination apparatus 300 further includes:
a first selection module 304, configured to select a first UE performing a space division multiple access operation by the base station;
a second selection module 305, configured to select, from the first UEs performing space division multiple access operation, a first UE that supports only downlink CA.
Optionally, as shown in fig. 7, the switching module 303 includes:
a transmitting submodule 3036, configured to transmit measurement configuration information of the second cell to a target UE by the base station;
a second handover submodule 3037, configured to receive a measurement report including measurement configuration information of the second cell sent by the target UE, and handover the target UE to the second cell.
The respective modules included in the resource coordination device 300 are virtual modules, and functions that the virtual modules can perform are generally performed by a processor included in the base station, so that the respective modules included in the resource coordination device 300 may be embodied in hardware by the processor of the base station.
It should be noted that, in the embodiment of the present invention, the above-mentioned resource coordination device 300 may implement the steps in the embodiment of the resource coordination method shown in fig. 1-2 in the embodiment of the present invention, and achieve the same beneficial effects, which are not described herein.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention, and details of the resource coordination method of the embodiments shown in fig. 1 to fig. 2 can be implemented, and the same effects are achieved. As shown in fig. 8, the base station 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804, and a bus interface, wherein:
a processor 801 for reading the program in the memory 803, performs the following process:
the base station calculates a first average correlation value between each first UE in a first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and other UEs in the second cell;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects the first UE of which the first difference value is greater than or equal to a threshold value;
and the base station selects a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to a threshold value, and switches the target UE to the second cell.
Wherein the transceiver 802 is configured to receive and transmit data under the control of the processor 801, the transceiver 802 comprising at least two antenna ports.
In fig. 8, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
Optionally, the switching the target UE to the second cell includes:
the base station counts the number N of the first UE with the first difference value larger than or equal to the threshold value;
the base station calculates a total average correlation value according to the first average correlation values of all the first UE in the first cell, and obtains the maximum space fraction according to the total average correlation value;
if the current space fraction in the first cell is greater than or equal to the maximum space fraction, the base station calculates a second difference value between the current space fraction and the maximum space fraction, wherein the current space fraction is the number of the UEs currently performing space division multiple access operation;
the base station selects the smallest value from the N, the preset switching limiting threshold value and the second difference value as the number M of the UE to be switched, wherein the N and the M are integers;
the base station switches M first UEs to the second cell.
Optionally, the base station switches M first UEs to the second cell, including:
the base station judges whether the resource utilization rate of the second cell reaches a target value;
and if the resource utilization rate of the second cell does not reach the target value, the base station switches M first UE to the second cell.
Optionally, before the base station calculates the first average correlation value between each first UE in the first cell performing the space division multiple access operation and other UEs in the first cell, the method further includes the following steps:
the base station selects a first UE for space division multiple access operation;
the base station selects a first UE which only supports downlink Carrier Aggregation (CA) from first UEs which perform space division multiple access operation;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects a first UE with the first difference value being greater than or equal to a threshold value, and the method comprises the following steps:
the base station calculates a first difference value between a first average correlation value of each first UE only supporting downlink CA and a second average correlation value of the first UE, and selects a first UE only supporting downlink CA, wherein the first difference value is larger than or equal to a threshold value;
the base station selects a target UE corresponding to a largest first difference value from first UEs with the first difference value being greater than or equal to a threshold value, and switches the target UE to the second cell, including:
and the base station selects a second target UE corresponding to the largest first difference value from the first UE which only supports downlink CA and has the first difference value larger than or equal to a threshold value, and switches the second target UE to the second cell.
Optionally, the switching the target UE to the second cell includes:
the base station sends measurement configuration information of the second cell to a target UE;
and the base station receives a measurement report which is sent by the target UE and comprises measurement configuration information of the second cell, and switches the target UE to the second cell.
It should be noted that, in the embodiment of the present invention, the base station 800 in the embodiment of the present invention may implement the steps in the embodiment of the resource coordination method shown in fig. 1-2 in the embodiment of the present invention, and achieve the same beneficial effects, which are not described herein.
Those of ordinary skill in the art will appreciate that all or some of the steps of implementing the methods of the above embodiments may be implemented by hardware associated with program instructions, where the program may be stored on a computer readable medium, the program when executed comprising the steps of:
the base station calculates a first average correlation value between each first UE in a first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and other UEs in the second cell;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects the first UE of which the first difference value is greater than or equal to a threshold value;
and the base station selects a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to a threshold value, and switches the target UE to the second cell.
Optionally, when the program is executed, the switching the target UE to the second cell includes:
the base station counts the number N of the first UE with the first difference value larger than or equal to the threshold value;
the base station calculates a total average correlation value according to the first average correlation values of all the first UE in the first cell, and obtains the maximum space fraction according to the total average correlation value;
if the current space fraction in the first cell is greater than or equal to the maximum space fraction, the base station calculates a second difference value between the current space fraction and the maximum space fraction, wherein the current space fraction is the number of the UEs currently performing space division multiple access operation;
the base station selects the smallest value from the N, the preset switching limiting threshold value and the second difference value as the number M of the UE to be switched, wherein the N and the M are integers;
the base station switches M first UEs to the second cell.
Optionally, when the program is executed, the base station switches M first UEs to the second cell, including:
the base station judges whether the resource utilization rate of the second cell reaches a target value;
and if the resource utilization rate of the second cell does not reach the target value, the base station switches M first UE to the second cell.
Optionally, before the base station calculates the first average correlation value between each first UE in the first cell and other UEs in the first cell, the method further includes the following steps:
the base station selects a first UE for space division multiple access operation;
the base station selects a first UE which only supports downlink Carrier Aggregation (CA) from first UEs which perform space division multiple access operation;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects a first UE with the first difference value being greater than or equal to a threshold value, and the method comprises the following steps:
the base station calculates a first difference value between a first average correlation value of each first UE only supporting downlink CA and a second average correlation value of the first UE, and selects a first UE only supporting downlink CA, wherein the first difference value is larger than or equal to a threshold value;
the base station selects a target UE corresponding to a largest first difference value from first UEs with the first difference value being greater than or equal to a threshold value, and switches the target UE to the second cell, including:
and the base station selects a second target UE corresponding to the largest first difference value from the first UE which only supports downlink CA and has the first difference value larger than or equal to a threshold value, and switches the second target UE to the second cell.
Optionally, when the program is executed, the switching the target UE to the second cell includes:
the base station sends measurement configuration information of the second cell to a target UE;
and the base station receives a measurement report which is sent by the target UE and comprises measurement configuration information of the second cell, and switches the target UE to the second cell.
The computer readable storage medium is, for example, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, an optical disk, or the like.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (12)
1. A method of resource coordination, comprising:
a base station of the MIMO system calculates a first average correlation value between each first user terminal UE in a first cell and other UEs in the first cell, and calculates a second average correlation value between each first UE and all UEs in a second cell, wherein the first average correlation value refers to an average value of the degree of channel consistency between each first UE in the first cell and other UEs in the first cell, and the second average correlation value refers to an average value of the degree of channel consistency between each first UE and all UEs in the second cell;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects the first UE of which the first difference value is greater than or equal to a threshold value;
and the base station selects a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to a threshold value, and switches the target UE to the second cell.
2. The method of claim 1, wherein the switching the target UE to the second cell comprises:
the base station counts the number N of the first UE with the first difference value larger than or equal to the threshold value;
the base station calculates a total average correlation value according to the first average correlation values of all the first UE in the first cell, and obtains the maximum space fraction according to the total average correlation value;
if the current space fraction in the first cell is greater than or equal to the maximum space fraction, the base station calculates a second difference value between the current space fraction and the maximum space fraction, wherein the current space fraction is the number of the UEs currently performing space division multiple access operation;
the base station selects the smallest value from the N, the preset switching limiting threshold value and the second difference value as the number M of the UE to be switched, wherein the N and the M are integers;
the base station switches M first UEs to the second cell.
3. The method of claim 2, wherein the base station handing over M first UEs to the second cell comprises:
the base station judges whether the resource utilization rate of the second cell reaches a target value;
and if the resource utilization rate of the second cell does not reach the target value, the base station switches M first UE to the second cell.
4. A method according to claim 2 or 3, wherein before the base station calculates the first average correlation value of each first UE in a first cell with other UEs in the first cell, the method further comprises:
the base station selects a first UE for space division multiple access operation;
the base station selects a first UE which only supports downlink Carrier Aggregation (CA) from first UEs which perform space division multiple access operation;
the base station calculates a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and selects a first UE with the first difference value being greater than or equal to a threshold value, and the method comprises the following steps:
the base station calculates a first difference value between a first average correlation value of each first UE only supporting downlink CA and a second average correlation value of the first UE, and selects a first UE only supporting downlink CA, wherein the first difference value is larger than or equal to a threshold value;
the base station selects a target UE corresponding to a largest first difference value from first UEs with the first difference value being greater than or equal to a threshold value, and switches the target UE to the second cell, including:
and the base station selects a second target UE corresponding to the largest first difference value from the first UE which only supports downlink CA and has the first difference value larger than or equal to a threshold value, and switches the second target UE to the second cell.
5. The method of claim 1, wherein the switching the target UE to the second cell comprises:
the base station sends measurement configuration information of the second cell to a target UE;
and the base station receives a measurement report which is sent by the target UE and comprises measurement configuration information of the second cell, and switches the target UE to the second cell.
6. A resource coordination device, comprising:
the computing module is used for computing a first average correlation value of each first UE in the first cell and other UEs in the first cell by the base station of the MIMO system, and computing a second average correlation value of each first UE and all UEs in the second cell, wherein the first average correlation value refers to an average value of the degree of channel consistency between each first UE in the first cell and other UEs in the first cell, and the second average correlation value refers to an average value of the degree of channel consistency between each first UE and all UEs in the second cell;
a selection module, configured to calculate a first difference value between a first average correlation value of each first UE and a second average correlation value of the first UE, and select a first UE whose first difference value is greater than or equal to a threshold value;
and the switching module is used for selecting a target UE corresponding to the largest first difference value from the first UEs with the first difference value being larger than or equal to the threshold value by the base station, and switching the target UE to the second cell.
7. The resource coordination device of claim 6, wherein the switching module comprises:
the first statistics sub-module is used for the base station to count the number of the first UE with the first difference value larger than or equal to the threshold value as N;
a first calculation sub-module, configured to calculate a total average correlation value according to first average correlation values of all first UEs in the first cell, and obtain a maximum space score according to the total average correlation value;
a second calculation sub-module, configured to calculate, if the current space fraction in the first cell is greater than or equal to the maximum space fraction, a second difference value between the current space fraction and the maximum space fraction, where the current space fraction is the number of UEs currently performing space division multiple access operation;
a first selecting sub-module, configured to select, by the base station, a value with the smallest value from the N, a preset handover limiting threshold value, and the second difference value as a number M of UEs to be handed over, where N and M are integers;
and the switching sub-module is used for switching the M first UE to the second cell by the base station.
8. The resource coordination device of claim 7, wherein the handover submodule includes:
a judging unit, configured to judge, by the base station, whether a resource usage rate of the second cell reaches a target value;
and the first switching unit is used for switching the M first UE to the second cell if the resource utilization rate of the second cell does not reach the target value.
9. The resource coordination device according to claim 7 or 8, characterized in that the resource coordination device further comprises:
a first selection module, configured to select a first UE performing a space division multiple access operation by the base station;
a second selection module, configured to select, from first UEs performing space division multiple access operation, a first UE that supports only downlink CA from the base stations;
the selection module is configured to calculate a first difference value between a first average correlation value of each first UE supporting only downlink CA and a second average correlation value of the first UE, and select a first UE supporting only downlink CA, where the first difference value is greater than or equal to a threshold value;
the switching module is configured to select a second target UE corresponding to the largest first difference from first UEs only supporting downlink CA, where the first difference is greater than or equal to a threshold, and switch the second target UE to the second cell.
10. The resource coordination device of claim 6, wherein the switching module comprises:
a transmitting sub-module, configured to transmit measurement configuration information of the second cell to a target UE by using the base station;
and the second switching sub-module is used for receiving a measurement report which is sent by the target UE and comprises the measurement configuration information of the second cell by the base station and switching the target UE to the second cell.
11. A base station comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the resource coordination method of any of claims 1-5 when the program is executed by the processor.
12. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the resource coordination method of any of claims 1-5.
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