CN108271163B - Spectrum resource sharing method and device - Google Patents
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- CN108271163B CN108271163B CN201710000774.8A CN201710000774A CN108271163B CN 108271163 B CN108271163 B CN 108271163B CN 201710000774 A CN201710000774 A CN 201710000774A CN 108271163 B CN108271163 B CN 108271163B
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Abstract
The invention discloses a method and a device for sharing frequency spectrum resources, wherein the method comprises the following steps: judging whether a high-load cell with the frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a predetermined base station of a GSM network, wherein the predetermined base station is a base station in a region for determining frequency spectrum sharing; under the condition that a high-load cell exists, determining a shared area according to an interference neighbor cell of the high-load cell; and allocating the unused preset frequency band of the GSM network to the LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area. The invention judges whether a high-load cell exists in the coverage area of the predetermined base station on the basis of determining the predetermined base station in the frequency spectrum sharing area to be implemented, if so, the sharing area is determined according to the interference neighbor cell of the high-load cell, and then the LTE network is dynamically allocated to use some frequency bands in the sharing area according to the use condition of the frequency points of the GSM network, thereby solving the problems in the prior art.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for sharing spectrum resources.
Background
In a conventional GSM (Global System for Mobile communications) network planning, carrier frequencies and frequency points are generally planned and configured according to the maximum telephone traffic of each cell. However, the traffic distribution in different time periods in different areas in a network is not balanced, the bearable traffic of the network is much larger than the sum of the maximum traffic of each cell, and the traffic tidal effect exists. For an LTE (Long Term Evolution) network, the demand of a user for data service is very strong, and thus there is a greater demand.
For the situation of the tidal effect of the GSM network and the situation of the vigorous data demand of the LTE network in the prior art, a reasonable resource utilization method is not provided, and the problems of the GSM network and the LTE network can be subjected to resource fusion.
Disclosure of Invention
The invention provides a method and a device for sharing spectrum resources, which are used for solving the following problems in the prior art: aiming at the situation that the tide effect of a GSM network and the LTE network have vigorous service data demand, a reasonable resource utilization method is not provided, and the problems of the tide effect and the LTE network can be subjected to resource fusion.
In order to solve the above technical problem, in one aspect, the present invention provides a method for sharing spectrum resources, including: judging whether a high-load cell with the frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a predetermined base station of a GSM network, wherein the predetermined base station is a base station in a region for determining frequency spectrum sharing; under the condition that the high-load cell exists, determining a shared area according to an interference neighbor cell of the high-load cell; and allocating the unused preset frequency band of the GSM network to the LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area.
Optionally, after allocating the unused predetermined frequency band of the GSM network to the LTE network in the shared area for use, the method further includes: and according to a first preset time period, the use condition of the frequency point of the GSM network in the shared area is obtained again, so that the frequency band distributed to the LTE network in the shared area is adjusted again according to the use condition.
Optionally, determining a shared area according to the interfering neighbor cell of the high-load cell includes: judging whether an intersection exists in each interference neighbor coverage area of the high-load cell; and taking the total coverage area of the interference adjacent cells of each high-load cell with the intersection on the coverage area and the coverage area of the high-load cell as the shared area.
Optionally, allocating, according to the use condition of the GSM network frequency point in the shared area, a predetermined frequency band that is not used by the GSM network to the LTE network in the shared area for use, and including: acquiring the use condition of the GSM network frequency point in the shared area; judging whether unused frequency bands exist according to the use condition of the frequency points; and under the condition that the unused frequency band exists, selecting a preset frequency band from the unused frequency band to be allocated to the LTE network in the shared area for use.
Optionally, selecting a preset frequency band from the unused frequency bands to allocate to the LTE network in the shared area for use includes: after the preset frequency band is selected, judging whether the usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold value; under the condition that the usable frequency point is not smaller than the preset GSM network standard frequency point use threshold, the preset frequency band is allocated to the LTE network in the shared area for use; and under the condition that the usable frequency point is smaller than the use threshold of the standard frequency point of the preset GSM network, recovering the preset frequency band used by the LTE network in the shared area.
Optionally, selecting a preset frequency band from the unused frequency bands includes: sequentially calculating interference values of frequency points of a plurality of unused frequency bands, wherein the interference values are the interference values of the unused frequency points and the high-load cell and the interference values of the unused frequency points and the interference neighbor cell of the high-load cell; and selecting the frequency band with the interference value smaller than a preset interference threshold value from all unused frequency bands as a preset frequency band.
Optionally, the method further includes: and according to a second preset time period, whether a high-load cell with the frequency spectrum utilization rate larger than the preset frequency spectrum utilization rate exists in the coverage range of the preset base station is judged again, so that the shared area is determined again according to the newly determined interference neighbor cell of the high-load cell.
In another aspect, the present invention further provides a spectrum resource sharing apparatus, including: the system comprises a judging module, a frequency spectrum sharing module and a frequency spectrum sharing module, wherein the judging module is used for judging whether a high-load cell with the frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a predetermined base station of a global system for mobile communications (GSM) network, and the predetermined base station is a base station in a region where the frequency spectrum sharing is determined; a determining module, configured to determine a shared area according to an interfering neighbor cell of the high-load cell under the condition that the high-load cell exists; and the allocation module is used for allocating the unused preset frequency band of the GSM network to the long term evolution LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area.
Optionally, the allocating module is further configured to reacquire a usage of the GSM network frequency point in the shared area according to a first predetermined time period, so as to readjust the frequency band allocated to the LTE network in the shared area according to the usage.
Optionally, the determining module includes: a first judging unit, configured to judge whether an intersection exists in coverage areas of interference neighboring cells of the high-load cell; and the determining unit is used for taking the total coverage area of the interference adjacent cells of each high-load cell with the intersection on the coverage area and the coverage area of the high-load cell as the shared area.
Optionally, the allocating module includes: the acquisition unit is used for acquiring the service condition of the GSM network frequency point in the shared area; the second judgment unit is used for judging whether unused frequency bands exist according to the use condition of the frequency points; and the allocation unit is used for selecting a preset frequency band from the unused frequency band to allocate to the LTE network in the shared area for use when the unused frequency band exists.
Optionally, the allocation unit is specifically configured to, after the preset frequency band is selected, determine whether a usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold; under the condition that the usable frequency point is not smaller than the preset GSM network standard frequency point use threshold, the preset frequency band is allocated to the LTE network in the shared area for use; and under the condition that the usable frequency point is smaller than the use threshold of the standard frequency point of the preset GSM network, recovering the preset frequency band used by the LTE network in the shared area.
Optionally, the allocation unit selects a preset frequency band from the unused frequency bands as follows: sequentially calculating interference values of frequency points of a plurality of unused frequency bands, wherein the interference values are the interference values of the unused frequency points and the high-load cell and the interference values of the unused frequency points and the interference neighbor cell of the high-load cell; and selecting the frequency band with the interference value smaller than a preset interference threshold value from all unused frequency bands as a preset frequency band.
Optionally, the determining module is further configured to re-determine, according to a second predetermined time period, whether a high-load cell with a spectrum utilization rate greater than a preset spectrum utilization rate exists in the coverage area of the predetermined base station, so as to trigger the determining module to re-determine the shared area according to an interfering neighboring cell of the newly determined high-load cell.
The invention is based on determining the predetermined base station in the frequency spectrum sharing area to be implemented, judges whether a high load cell exists in the coverage area of the predetermined base station, if yes, determines the sharing area according to the interference adjacent cell of the high load cell, and dynamically allocates the LTE network to use some frequency bands in the sharing area according to the use condition of the frequency point of the GSM network, the method can fully utilize the resources of the GSM network and the LTE network, realizes reasonable allocation, and solves the following problems in the prior art: aiming at the situation that the tide effect of a GSM network and the LTE network have vigorous service data demand, a reasonable resource utilization method is not provided, and the problems of the tide effect and the LTE network can be subjected to resource fusion.
Drawings
Fig. 1 is a flow chart of a method for sharing spectrum resources according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a spectrum resource sharing apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a shared device determining module for spectrum resources according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a spectrum resource sharing device allocation module according to a second embodiment of the present invention;
FIG. 5 is a system networking diagram in a third embodiment of the invention;
FIG. 6 is a flowchart of the operation of each part of the system networking diagram in the third embodiment of the present invention;
FIG. 7 is a diagram illustrating message interaction in a third embodiment of the present invention;
fig. 8 is a schematic diagram of spectrum allocation of a network according to a third embodiment of the present invention.
Detailed Description
In order to solve the following problems in the prior art: aiming at the situation that the tide effect of a GSM network and the LTE network have vigorous service data requirements, a reasonable resource utilization method is not provided, and the problems of the tide effect and the LTE network can be subjected to resource fusion; the present invention provides a method and an apparatus for sharing spectrum resources, which are described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
A first embodiment of the present invention provides a method for sharing spectrum resources, where the flow of the method is shown in fig. 1, and the method includes steps S102 to S106:
s102, judging whether a high-load cell with a frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a predetermined base station of the GSM network, wherein the predetermined base station is a base station in a region for determining frequency spectrum sharing;
s104, under the condition that a high-load cell exists, determining a shared area according to an interference neighbor cell of the high-load cell;
and S106, allocating the unused preset frequency band of the GSM network to the LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area.
The embodiment of the invention is based on determining the predetermined base station in the frequency spectrum sharing area to be implemented, judging whether a high-load cell exists in the coverage area of the predetermined base station, if so, determining the sharing area according to the interference adjacent cell of the high-load cell, and dynamically allocating the LTE network to use some frequency bands in the sharing area according to the use condition of the frequency points of the GSM network, the method can fully utilize the resources of the GSM network and the LTE network, realizes reasonable allocation, and solves the following problems in the prior art: aiming at the situation that the tide effect of a GSM network and the LTE network have vigorous service data demand, a reasonable resource utilization method is not provided, and the problems of the tide effect and the LTE network can be subjected to resource fusion.
After the unused preset frequency band of the GSM network is allocated to the LTE network in the shared area for use, the use condition of the frequency point of the GSM network in the shared area can be obtained again according to a first preset time period, so that the frequency band allocated to the LTE network in the shared area is adjusted again according to the use condition. The process can dynamically adjust the spectrum resources allocated to the LTE network, and ensure that the performance of the GSM network is not influenced.
Because factors such as a base station or an interference source may be newly added, it is further necessary to re-determine whether a high-load cell having a spectrum utilization rate greater than a preset spectrum utilization rate exists in the coverage area of the predetermined base station according to a second predetermined time period, so as to re-determine the shared area according to an interfering neighboring cell of the newly determined high-load cell. The process can dynamically adjust the shared area, ensure the accuracy of the setting of the shared area and further ensure the reasonability of the frequency spectrum resource allocation.
In the specific implementation process, when a shared area is determined according to the interference adjacent cell of the high-load cell, whether an intersection exists on the coverage area of each interference adjacent cell of the high-load cell is judged; and if so, taking the total coverage area of the interference adjacent cells of the high-load cells with the intersection on the coverage area and the coverage area of the high-load cells as a shared area.
For example, a certain cell has ten interfering neighboring cells, then a set of the ten interfering neighboring cells is the outer boundary of a shared region, a plurality of base stations are located in the shared region, and in the entire shared region, the frequency division multiplexing GSM network and LTE network can share spectrum resources and perform dynamic division. The high-load cell is to count how many spectrum resources are needed in a shared area, and thus how many spectrum resources are needed in the entire shared area to carry the current GSM service, and other bandwidths can be used by the LTE network.
When a preset frequency band which is not used by a GSM network is allocated to an LTE network in a shared area for use according to the use condition of the GSM network frequency point in the shared area, the use condition of the GSM network frequency point in the shared area is firstly obtained; judging whether unused frequency bands exist according to the use condition of the frequency points; under the condition that unused frequency bands exist, selecting preset frequency bands from the unused frequency bands to be allocated to an LTE network in a shared area for use, if the unused frequency bands do not exist, not allocating spectrum resources to the LTE network at the moment, and after waiting for a first preset time period, re-acquiring the use condition of GSM network frequency points in the shared area. Wherein, select preset frequency channel from unused frequency channel, include: sequentially calculating interference values of frequency points of a plurality of unused frequency bands, wherein the interference values are the interference values of unused frequency points and a high-load cell and the interference values of the unused frequency points and an interference adjacent cell of the high-load cell; and selecting a frequency band with an interference value smaller than a preset interference threshold value from all unused frequency bands as a preset frequency band.
The method for selecting the preset frequency band from the unused frequency bands to be allocated to the LTE network in the shared area for use comprises the following steps: judging whether the usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold value after the preset frequency band is selected; under the condition that the usable frequency point is not less than the preset GSM network standard frequency point use threshold, allocating a preset frequency band to an LTE network in a shared area for use; and under the condition that the usable frequency point is smaller than the preset GSM network standard frequency point use threshold, reselecting the preset frequency band allocated to the LTE network in the shared area for use.
A second embodiment of the present invention provides a spectrum resource sharing device, a structure of which is schematically shown in fig. 2, and the device includes: the system comprises a judging module 10, a spectrum sharing module and a control module, wherein the judging module is used for judging whether a high-load cell with a spectrum utilization rate larger than a preset spectrum utilization rate exists in a coverage range of a predetermined base station of a GSM network, and the predetermined base station is a base station in a region where spectrum sharing is determined; a determining module 20, coupled to the determining module 10, configured to determine, when a high-load cell exists, a shared area according to an interfering neighboring cell of the high-load cell; and the allocating module 30 is coupled with the determining module 20 and configured to allocate, according to the usage of the GSM network frequency point in the shared area, the unused predetermined frequency band of the GSM network to the LTE network in the shared area for use.
The allocation module is further configured to reacquire the use condition of the GSM network frequency point in the shared area according to the first predetermined time period, so as to readjust the frequency band allocated to the LTE network in the shared area according to the use condition.
The structural schematic of the determining module 20 may be as shown in fig. 3, and includes: a first determining unit 201, configured to determine whether an intersection exists in coverage areas of interference neighboring cells of a high-load cell; a determining unit 202, coupled to the first determining unit 201, configured to use a total coverage area of interference neighboring cells of each high load cell having an intersection on a coverage area together with the coverage area of the high load cell as a shared area.
A structural schematic of the dispensing module 30 can be seen in fig. 4, which comprises: an obtaining unit 301, configured to obtain a use condition of a GSM network frequency point in a shared area; a second judging unit 302, coupled to the obtaining unit 301, configured to judge whether there is an unused frequency band according to a use condition of the frequency point; and an allocating unit 303, coupled to the second determining unit 302, configured to select a preset frequency band from the unused frequency bands to allocate to the LTE network in the shared area for use in the case that there is an unused frequency band.
In the implementation process, the allocating unit 303 is specifically configured to determine whether a usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold after the preset frequency band is selected; under the condition that the usable frequency point is not less than the preset GSM network standard frequency point use threshold, allocating a preset frequency band to an LTE network in a shared area for use; and under the condition that the usable frequency point is smaller than the preset GSM network standard frequency point use threshold, reselecting the preset frequency band allocated to the LTE network in the shared area for use.
Specifically, the allocating unit 303 selects a preset frequency band from unused frequency bands as follows: sequentially calculating interference values of frequency points of a plurality of unused frequency bands, wherein the interference values are the interference values of unused frequency points and a high-load cell and the interference values of the unused frequency points and an interference adjacent cell of the high-load cell; and selecting a frequency band with an interference value smaller than a preset interference threshold value from all unused frequency bands as a preset frequency band.
In a preferable case, the determining module 10 is further configured to re-determine whether a high-load cell with a spectrum utilization rate greater than a preset spectrum utilization rate exists in the coverage area of the predetermined base station according to a second predetermined time period, so as to trigger the determining module 20 to re-determine the shared area according to an interference neighboring cell of the newly determined high-load cell.
In the third embodiment of the present invention, the implementation of the method exists in the form of a spectrum sharing server, and the spectrum sharing server utilizes the tidal effect, and according to the situation that the local spectrum is not balanced in occupancy, GSM dynamically allocates and releases spectrum resources to LTE through its own spectrum utilization, so that the spectrum resources can be saved, and the spectrum utilization rate can be improved. The frequency spectrum sharing server dynamically divides and adjusts the sharing area according to respective frequency spectrum characteristics of GSM and LTE and service regionality and time correlation, realizes sharing of partial frequency spectrum resources between GSM and LTE, and effectively improves the frequency spectrum utilization rate.
The spectrum sharing server of the embodiment mainly relates to the region division of the spectrum scheduling of the GSM and the LTE, and the spectrum allocation and scheduling in the sharing region, wherein the GSM mainly bears voice service, and the LTE mainly bears data service, and the spectrum sharing and recovery principle of the system is that the GSM and the LTE are respectively allocated with certain static resources; the rest is used as dynamic spectrum resources, and is preferentially used for GSM which mainly bears voice services, and is shared for LTE when the GSM spectrum resources are idle. The spectrum sharing process needs the cooperation of the BSC, the spectrum sharing server, and the eNB, and a system networking diagram thereof is shown in fig. 5, and includes:
1. an initial configuration management module: the system runs in a spectrum sharing server and has the main functions of: and managing interface information with the BSC and the eNB, and acquiring GSM, LTE and other initial configuration information.
2. Shared region partitioning module (equivalent to the function of the shared device of spectrum resources in the second embodiment): the method is operated in a frequency spectrum sharing server, and according to the frequency spectrum utilization rate of the GSM cell, the interference adjacent cell of the cell with the frequency spectrum utilization rate exceeding (greater than 1 threshold) of the GSM cell is analyzed, a sharing area is divided, and the sharing area is periodically adjusted (Timer 1).
3. Message relay module (role of transmitting and receiving message): the method runs in a spectrum sharing server and forwards the transparent transmission message with the GSM/LTE.
4. Sharing stage evaluation module (functional module interacting with spectrum sharing server): the method runs in the BSC, performs initial dynamic frequency point allocation, namely which frequency bands can be allocated to LTE for use, and also performs initial sharing stage evaluation and later periodical and emergency sharing stage change processing.
5. Shared area bandwidth adjustment module (functional module interacting with spectrum sharing server): the operations and the eNB manage the shared area and bandwidth allocation of the LTE cell.
Fig. 6 shows the work flow of each part of the system networking diagram, and in fig. 6, the dynamic spectrum resource allocation function implemented by the spectrum sharing server is set at the BSC side in this embodiment, so that it can be seen that the allocation process may be implemented inside the BSC, or data may be transmitted to the spectrum sharing server to be implemented in the spectrum sharing server. The system operates as follows, including the first step to the fourth step:
the first step is as follows: planning and configuring interference adjacent cells of each cell at the BSC, and configuring a spectrum sharing range and a spectrum sharing stage at a spectrum sharing server.
After the spectrum sharing function is started, the spectrum sharing server interacts with the BSC and the eNB so that the spectrum sharing server can obtain required wireless configuration data from both sides of the GSM and the LTE.
The second step is that: after reporting the configuration data, the BSC periodically counts and reports the frequency spectrum utilization condition of each cell. The frequency spectrum sharing server screens high-load cells according to a threshold 1 (frequency spectrum utilization rate over-limit threshold), and analyzes and outputs the sharing area of GSM and LTE through interference adjacent cells of each cell.
The third step: and the frequency spectrum sharing server sends the sharing area information to GSM and LTE. In each sharing region, an initial sharing phase is analyzed according to the spectrum resource requirement of the GSM, and then the GSM spectrum resource requirement is periodically (Timer1) analyzed to adjust the sharing phase. The cell above threshold 1 is allocated with dynamic frequency point, and the cell below threshold 2 (frequency spectrum utilization too low threshold) releases dynamic frequency point. If an emergency is encountered and the GSM spectrum resource demand rises urgently (greater than threshold 3), the sharing phase can be adjusted urgently.
The fourth step: the BSC reports the spectrum utilization to the spectrum sharing server periodically (Timer2), and the spectrum sharing server periodically analyzes and replans the shared area. The Timer1> Timer2, the Timer1 is generally in hours, and the Timer2 is generally in minutes.
In the above process, the message interaction diagram may be as shown in fig. 7, in which the message interactions performed at the various stages are presented.
The operation in the above step will be described in detail below.
The dividing manner of the shared area in the second step is specifically as follows:
the shared area is determined by the system parameter period Timer1, assuming that the total GSM cell number is C ═ C1,C2,...CnAnd reporting the m cells as the frequency spectrum interest rate over-limit cells in the T time period: ch＝{Ch1,Ch2,...Chm}, over-limit cell i (1)<＝i<M) are h and l respectively. The GSM interference neighborhood of the cell Ci is Gi, Gi＝{Gi1,Gi2...Gih}。
Frequency spectrum interest rate over-limit cell ChCorresponding GSM interference adjacent region GhJudging whether intersection exists or not, and drawing into the same sharing area if the intersection exists, namely, firstly setting the sharing area S1＝Gh1If, if
The shared area S is updated1＝Gh1∪Ghi. And the like, circularly calculating the shared area S1, and then taking S1And ChAnd the reverse set, the shared area S2 is continuously obtained, and the process loops until all the overrun cells are allocated.
The selection and allocation of GSM frequency points and the confirmation process of the sharing stage in the third step are specifically as follows:
in order to reasonably allocate frequency point resources, sharing can be performed in multiple stages according to the actual spectrum situation, for example, Step1, Step2 and … … Stepn sharing, and the priority level sequentially changes from high to low.
In the initial sharing stage after the initial issuing of the sharing region, the number of the dynamic frequency points is required to be calculated according to the number of the enabled dynamic frequency points of the frequency spectrum overrun cells of each sharing region. The basic algorithm is: and sequentially increasing the number of frequency points according to the frequency spectrum utilization rate exceeding the limit. Hypothesis CiThe frequency spectrum utilization rate of the cell is Load _ CiThen, then
Load_Cplus＝Max{Load_Ch1，Load_Ch2,...Load_Chm}，CplusThe dynamic carrier frequency is increased by 1.
The dynamic frequency point selection is based on the principle of minimum interference, namely, each dynamic frequency point is calculatedAnd CplusAnd taking the minimum interference value as a target frequency point of the interference values of the cell and each interference adjacent cell. Interference value of frequency point i, for a certain interference adjacent cell CjThe interference value includes same frequency and upper and lower adjacent frequency interference:
total interference value at frequency point i:
for example, in a sharing stage, if there are l frequency points, the minimum interference value f of the dynamic frequency pointmin＝min{f(1),f(2)....f(l)If fmin<Selecting f as the interference tolerance thresholdminAdding corresponding frequency points CplusAnd (4) a cell.
And re-estimating the spectrum utilization rate after the dynamic frequency points are added, and circulating until the spectrum utilization rate of all the cells is lower than a threshold value. And when the frequency spectrum utilization rate of each cell is lower than a threshold or the maximum physical carrier frequency is reached, ending the frequency spectrum allocation. If frequency point is allocated, GSM overrun area f at this stagemin>And when the threshold of the interference tolerance is met, starting the next stage of sharing the frequency point. And taking the sharing phase in which the GSM is positioned at the end of the final spectrum allocation as an initial sharing phase.
For a network using a frequency hopping system, dynamic MA List may be used to maintain the frequency hopping gain, for example, the original MA List { T1, T2}, and after dynamic frequency point T3 is issued, the dynamic MA List { T1, T2, T3}, corresponding carrier frequencies are enabled, and a frequency hopping sequence is introduced. After the next stage of dynamic frequency point T4 is issued, MA List { f1, f2, f3, f4} is continuously expanded to enable the corresponding carrier frequency, and vice versa.
Taking a certain network as an example, the spectrum resource of 18MHz 1800M can plan a 3M GSM dedicated frequency point and a 3M LTE dedicated bandwidth, and can use a shared range of 12 MHz. The LTE bandwidth is expanded/released in 3 steps of 3M-5M-10M-15M; the GSM bandwidth is released/expanded in 3 steps of "5M-3M, 5M-10M, 10M-15M". In one shared area in a certain period, the utilization rate of GSM frequency spectrum resources is high in the initial stage, all dynamic resources are occupied, and partial dynamic frequency spectrum resources are gradually released for LTE along with load reduction. Fig. 8 is a schematic diagram of spectrum allocation of a network.
According to the embodiment of the invention, the frequency spectrum resources are dynamically allocated according to the region, so that the frequency spectrum utilization rate is effectively improved; the frequency point and occupation of GSM and the bandwidth of LTE adopt a step increase or reduction mode, thereby ensuring the continuity of the service when sharing occurs and effectively avoiding the interference between GSM and LTE.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, and the scope of the invention should not be limited to the embodiments described above.
Claims (14)
1. A method for sharing spectrum resources, comprising:
judging whether a high-load cell with the frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a global system for mobile communications (GSM) network preset base station, wherein the preset base station is a base station in a region for determining frequency spectrum sharing;
under the condition that the high-load cell exists, determining a shared area according to an interference neighbor cell of the high-load cell;
and allocating the unused preset frequency band of the GSM network to the long term evolution LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area.
2. The sharing method of claim 1, wherein after allocating the predetermined frequency band not used by the GSM network to the LTE network in the shared area, the method further comprises:
and according to a first preset time period, the use condition of the frequency point of the GSM network in the shared area is obtained again, so that the frequency band distributed to the LTE network in the shared area is adjusted again according to the use condition.
3. The sharing method of claim 1, wherein determining a shared area according to the interfering neighbor of the high load cell comprises:
judging whether an intersection exists in each interference neighbor coverage area of the high-load cell;
and taking the total coverage area of the interference adjacent cells of each high-load cell with the intersection on the coverage area and the coverage area of the high-load cell as the shared area.
4. The sharing method of claim 1, wherein allocating the unused predetermined frequency band of the GSM network to the LTE network in the shared area according to the usage of the frequency point of the GSM network in the shared area comprises:
acquiring the use condition of the GSM network frequency point in the shared area;
judging whether unused frequency bands exist according to the use condition of the frequency points;
and under the condition that the unused frequency band exists, selecting a preset frequency band from the unused frequency band to be allocated to the LTE network in the shared area for use.
5. The sharing method of claim 4, wherein selecting a preset frequency band from the unused frequency bands to be allocated for the LTE network in the shared area to use comprises:
after the preset frequency band is selected, judging whether the usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold value;
under the condition that the usable frequency point is not smaller than the preset GSM network standard frequency point use threshold, the preset frequency band is allocated to the LTE network in the shared area for use;
and under the condition that the usable frequency point is smaller than the use threshold of the standard frequency point of the preset GSM network, recovering the preset frequency band used by the LTE network in the shared area.
6. The sharing method of claim 4, wherein selecting the predetermined frequency band from the unused frequency bands comprises:
sequentially calculating interference values of frequency points of a plurality of unused frequency bands, and selecting the frequency band with the interference value smaller than a preset interference threshold value from all the unused frequency bands as a preset frequency band; the interference value is an interference value between an unused frequency point and the high-load cell, and an interference value between the unused frequency point and an interference neighboring cell of the high-load cell.
7. The sharing method of any one of claims 1 to 6, wherein the method further comprises:
and according to a second preset time period, whether a high-load cell with the frequency spectrum utilization rate larger than the preset frequency spectrum utilization rate exists in the coverage range of the preset base station is judged again, so that the shared area is determined again according to the newly determined interference neighbor cell of the high-load cell.
8. An apparatus for sharing spectrum resources, comprising:
the system comprises a judging module, a frequency spectrum sharing module and a frequency spectrum sharing module, wherein the judging module is used for judging whether a high-load cell with the frequency spectrum utilization rate larger than a preset frequency spectrum utilization rate exists in the coverage range of a predetermined base station of a global system for mobile communications (GSM) network, and the predetermined base station is a base station in a region where the frequency spectrum sharing is determined;
a determining module, configured to determine a shared area according to an interfering neighbor cell of the high-load cell under the condition that the high-load cell exists;
and the allocation module is used for allocating the unused preset frequency band of the GSM network to the long term evolution LTE network in the shared area for use according to the use condition of the frequency point of the GSM network in the shared area.
9. The sharing device of claim 8,
the allocation module is further configured to reacquire a use condition of the GSM network frequency point in the shared area according to a first predetermined time period, so as to readjust a frequency band allocated to the LTE network in the shared area according to the use condition.
10. The sharing device of claim 8, wherein the determining module comprises:
a first judging unit, configured to judge whether an intersection exists in coverage areas of interference neighboring cells of the high-load cell;
and the determining unit is used for taking the total coverage area of the interference adjacent cells of each high-load cell with the intersection on the coverage area and the coverage area of the high-load cell as the shared area.
11. The sharing device of claim 8, wherein the allocation module comprises:
the acquisition unit is used for acquiring the service condition of the GSM network frequency point in the shared area;
the second judgment unit is used for judging whether unused frequency bands exist according to the use condition of the frequency points;
and the allocation unit is used for selecting a preset frequency band from the unused frequency band to allocate to the LTE network in the shared area for use when the unused frequency band exists.
12. The sharing device of claim 11,
the allocation unit is specifically configured to determine whether a usable frequency point of the GSM network is smaller than a preset GSM network standard frequency point use threshold after the preset frequency band is selected; under the condition that the usable frequency point is not smaller than the preset GSM network standard frequency point use threshold, the preset frequency band is allocated to the LTE network in the shared area for use; and under the condition that the usable frequency point is smaller than the use threshold of the standard frequency point of the preset GSM network, recovering the preset frequency band used by the LTE network in the shared area.
13. The sharing device according to claim 11, wherein the allocation unit selects a preset frequency band from the unused frequency bands as follows:
sequentially calculating interference values of frequency points of a plurality of unused frequency bands, and selecting the frequency band with the interference value smaller than a preset interference threshold value from all the unused frequency bands as a preset frequency band; the interference value is an interference value between an unused frequency point and the high-load cell, and an interference value between the unused frequency point and an interference neighboring cell of the high-load cell.
14. The sharing device according to any one of claims 8 to 13,
the determining module is further configured to re-determine whether a high-load cell with a spectrum utilization rate greater than a preset spectrum utilization rate exists in the coverage area of the predetermined base station according to a second predetermined time period, so as to trigger the determining module to re-determine the shared area according to an interfering neighbor cell of the newly determined high-load cell.
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| PCT/CN2017/112435 WO2018126810A1 (en) | 2017-01-03 | 2017-11-22 | Spectrum resource sharing method and device |
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| CN109831787B (en) * | 2018-12-21 | 2023-07-14 | 中国科学院上海微系统与信息技术研究所 | Method for coordinating resources among base stations in power wireless communication system |
| CN111385800B (en) * | 2018-12-29 | 2024-07-19 | 北京亿阳信通科技有限公司 | Carrier scheduling method and device for LTE capacity equalization |
| CN111698686B (en) * | 2019-03-11 | 2023-01-13 | 中国移动通信有限公司研究院 | Wireless communication method and frequency allocation device |
| CN112436864B (en) * | 2019-08-26 | 2023-04-18 | 中兴通讯股份有限公司 | Frequency hopping frequency point sharing method, frequency hopping frequency point recycling method, controller and base station system |
| CN112584419B (en) * | 2019-09-29 | 2022-11-22 | 中国移动通信集团湖北有限公司 | Inter-system detection method and device, computing equipment and computer storage medium |
| CN112584384A (en) * | 2019-09-30 | 2021-03-30 | 大唐移动通信设备有限公司 | Spectrum sharing method and device |
| CN113038537B (en) * | 2019-12-24 | 2022-11-22 | 中国移动通信集团四川有限公司 | Method and electronic equipment for allocating mobile network spectrum resources |
| CN113347696B (en) * | 2020-03-02 | 2023-04-11 | 华为技术服务有限公司 | Power distribution method and device |
| CN113766515B (en) * | 2020-06-05 | 2023-10-27 | 大唐移动通信设备有限公司 | Cell shared frequency band allocation method and device |
| CN112055362B (en) * | 2020-08-19 | 2023-04-07 | 中通服咨询设计研究院有限公司 | 4G and 5G cooperative dynamic frequency sharing method and system |
| US11968541B2 (en) * | 2020-09-08 | 2024-04-23 | Qualcomm Incorporated | Spectrum sharing with deep reinforcement learning (RL) |
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