CN107105507B - Method and device for sharing spectrum resources - Google Patents
Method and device for sharing spectrum resources Download PDFInfo
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- CN107105507B CN107105507B CN201610095128.XA CN201610095128A CN107105507B CN 107105507 B CN107105507 B CN 107105507B CN 201610095128 A CN201610095128 A CN 201610095128A CN 107105507 B CN107105507 B CN 107105507B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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Abstract
The invention discloses a method and a device for sharing spectrum resources, which are used for solving the problems of high networking cost and easy communication blockage of a TD-LTE system. The method comprises the following steps: the method comprises the steps of configuring a working frequency band for a base station in advance in an authorized frequency band of a wireless television signal supported by an RRU device, detecting whether the wireless television signal exists in the current working frequency band after a cell is activated, screening the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, and allocating a frequency spectrum resource for UE based on an idle frequency band except the working frequency band occupied by the wireless television signal in the current working frequency band. Therefore, the base station can complete the service communication with the UE by using the authorized low frequency band of the wireless television system under the condition of not influencing the wireless television signal transmission, thereby improving the frequency spectrum utilization rate, reducing the communication blockage, increasing the coverage area and reducing the network construction cost.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for sharing spectrum resources.
Background
A Time Division Long Term Evolution (TD-LTE) system becomes a research hotspot in the field of current mobile communication due to the advantages of small network delay, high data rate, strong anti-interference capability, and the like.
In the prior art, a TD-LTE system uses F, D dual bands to implement service communication between User Equipment (UE) and a base station, where the F band is generally 1850 MHz-1990 MHz, and the D band is generally 2010 MHz-2620 MHz. Although the TD-LTE System has high data rate and strong anti-interference capability, the coverage area of the TD-LTE System is small, and if the TD-LTE System is to realize wide coverage in a remote mountain area, it needs to establish a plurality of base stations, which results in high cost For establishing a network in the remote mountain area, and moreover, because the TD-LTE System can only communicate through its own authorized frequency band, when there is large co-frequency interference in the authorized frequency band, the TD-LTE System cannot flexibly utilize the idle frequency bands of other systems For communication, and cannot automatically fall back to a Global System For Mobile Communications (GSM) System or a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) System, which results in communication blockage or interruption.
Disclosure of Invention
The embodiment of the invention provides a method and a device for sharing spectrum resources, which are used for solving the problems of high network establishment cost and easy communication blockage of a TD-LTE system in the prior art.
The embodiment of the invention provides the following specific technical scheme:
a method of sharing spectrum resources, comprising:
after activating a cell managed by a base station, detecting whether a wireless television signal exists in a current working frequency band, and screening out the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, wherein the current working frequency band of the base station is preconfigured based on a working bandwidth supported by the base station in an authorized frequency band of the wireless television signal supported by an RRU device;
and the base station allocates frequency spectrum resources for the UE based on idle frequency bands except the working frequency band occupied by the wireless television signal in the current working frequency band.
In the embodiment of the invention, the base station is configured with the working frequency band in advance in the authorized frequency band of the wireless television signal supported by the RRU device, and after the cell is activated, whether the idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal is automatically detected, and when the idle frequency band exists in the current working frequency band is determined, the service communication between the UE and the base station is completed based on the idle frequency band, so that the base station in the TD-LTE system can flexibly utilize the idle frequency band in the authorized low frequency band of the wireless television system, and the service communication with the UE is completed under the condition of not influencing the transmission of the wireless television signal, thereby improving the frequency spectrum utilization rate of the wireless television system, avoiding the problem of communication blockage caused by the interference of the authorized frequency band of the base station, and further ensuring the overall performance of the TD-LTE system, and after the cell is activated, the wireless television signal is automatically detected, even if the wireless television signal exists in the configured working frequency band, the frequency spectrum can be rapidly avoided, the smooth transmission of the wireless television signal is further ensured, in addition, the service communication between the UE and the base station is completed through the authorized low frequency band of the wireless television system, the coverage range is increased, and the network establishment cost is reduced.
Preferably, further comprising:
when the base station determines that no idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal, in the authorized frequency band of the wireless television signal supported by the RRU device, a new working frequency band is reconfigured again based on the working bandwidth supported by the base station, whether an idle frequency band exists in the new working frequency band except the working frequency band occupied by the wireless television signal is judged, and when the idle frequency band exists in the new working frequency band, spectrum resources are allocated to the UE based on the idle frequency band in the new working frequency band.
Preferably, the reconfiguring the new operating band comprises:
and the base station reconfigures a new central frequency point based on the current central frequency point, and reconfigures a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the base station in the authorized frequency band of the wireless television signal supported by the RRU device.
Preferably, further comprising:
the base station determines that no idle frequency band exists in the authorized frequency bands of the wireless television signals supported by the RRU device except the working frequency band occupied by the wireless television signals, and further judges whether the RRU device supports the authorized high frequency band allocated to the base station by the time-sharing long-term evolution TD-LTE system when judging that the new working frequency band is not configured;
if yes, allocating spectrum resources for the UE based on an authorized high frequency band allocated to the base station by the TD-LTE system;
otherwise, the UE is informed to return to a GSM system or a TD-SCDMA system.
Therefore, even if the base station in the TD-LTE system can not perform service communication in the authorized frequency band of the wireless television system supported by the RRU device, the base station can automatically back to the authorized high frequency band allocated by the TD-LTE system to complete the service communication with the UE, and when the RRU device does not support the authorized high frequency band of the RRU device, the base station in the TD-LTE system can automatically back to the GSM system or the TD-SCDMA system, thereby ensuring that the service communication between the base station and the UE is not interrupted.
Preferably, the base station detects whether there is a wireless television signal in the current operating frequency band, including:
and the base station performs segmentation detection on the current working frequency band according to a set segmentation rule, and determines that the wireless television signal exists in any one segment when the difference value between the total received power of the channel in the any one segment and the signal power is more than or equal to a set threshold value.
Preferably, the allocating, by the base station, the spectrum resource for the UE based on an idle frequency band in the current working frequency band except for the working frequency band occupied by the wireless television signal includes:
and the base station sends downlink data signals to the UE based on the idle frequency band, sends the initial position and the bandwidth corresponding to the idle frequency band to the UE, and indicates the UE to send uplink data signals in the frequency band corresponding to the initial position and the bandwidth.
An apparatus that shares spectrum resources, comprising:
the device comprises a screening unit, a configuration unit and a Remote Radio Unit (RRU), wherein the screening unit is used for detecting whether a wireless television signal exists in a current working frequency band after activating a cell governed by the screening unit, and screening the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, wherein the current working frequency band is pre-configured by the configuration unit based on a working bandwidth supported by the configuration unit in an authorized frequency band of the wireless television signal supported by the RRU;
and the allocation unit is used for allocating frequency spectrum resources to the user equipment UE based on idle frequency bands except the working frequency band occupied by the wireless television signal in the current working frequency band.
In the embodiment of the invention, the base station is configured with the working frequency band in advance in the authorized frequency band of the wireless television signal supported by the RRU device, and after the cell is activated, whether the idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal is automatically detected, and when the idle frequency band exists in the current working frequency band is determined, the service communication between the UE and the base station is completed based on the idle frequency band, so that the base station in the TD-LTE system can flexibly utilize the idle frequency band in the authorized low frequency band of the wireless television system, and the service communication with the UE is completed under the condition of not influencing the transmission of the wireless television signal, thereby improving the frequency spectrum utilization rate of the wireless television system, avoiding the problem of communication blockage caused by the interference of the authorized frequency band of the base station, and further ensuring the overall performance of the TD-LTE system, and after the cell is activated, the wireless television signal is automatically detected, even if the wireless television signal exists in the configured working frequency band, the frequency spectrum can be rapidly avoided, the smooth transmission of the wireless television signal is further ensured, in addition, the service communication between the UE and the base station is completed through the authorized low frequency band of the wireless television system, the coverage range is increased, and the network establishment cost is reduced.
Preferably, the configuration unit is further configured to:
when determining that no idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal, reconfiguring a new working frequency band in the authorized frequency band of the wireless television signal supported by the RRU device based on the working bandwidth supported by the RRU device, judging whether an idle frequency band exists in the new working frequency band except the working frequency band occupied by the wireless television signal, and allocating spectrum resources to the UE based on the idle frequency band in the new working frequency band when determining that the idle frequency band exists in the new working frequency band.
Preferably, when the new operating frequency band is reconfigured, the configuration unit is configured to:
and reconfiguring a new central frequency point based on the current central frequency point, and reconfiguring a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the RRU device in the authorized frequency band of the wireless television signal supported by the RRU device.
Preferably, the allocation unit is further configured to:
determining that no idle frequency band exists in authorized frequency bands of wireless television signals supported by an RRU device except for a working frequency band occupied by the wireless television signals, and further judging whether the RRU device supports an authorized high frequency band allocated to the RRU device by a TD-LTE system when judging that reconfiguration of a new working frequency band fails;
if yes, allocating spectrum resources to the UE based on the authorized high frequency band of the TD-LTE system;
otherwise, the UE is informed to return to a global system for mobile communication (GSM) system or a time division synchronous code division multiple access (TD-SCDMA) system.
Therefore, even if the base station in the TD-LTE system can not perform service communication in the authorized frequency band of the wireless television system supported by the RRU device, the base station can automatically back to the authorized high frequency band allocated by the TD-LTE system to complete the service communication with the UE, and when the RRU device does not support the authorized high frequency band of the RRU device, the base station in the TD-LTE system can automatically back to the GSM system or the TD-SCDMA system, thereby ensuring that the service communication between the base station and the UE is not interrupted.
Preferably, when detecting whether there is a wireless television signal in the current operating frequency band, the screening unit is configured to:
and according to a set segmentation rule, performing segmentation detection on the current working frequency band, and determining that the wireless television signal exists in any one segment when the difference value between the total received power of the channel in the any one segment and the signal power is larger than or equal to a set threshold value.
Preferably, when allocating spectrum resources to the UE based on an idle frequency band in the current operating frequency band except for the operating frequency band occupied by the wireless television signal, the allocating unit is configured to:
and sending downlink data signals to the UE based on the idle frequency band, sending the initial position and the bandwidth corresponding to the idle frequency band to the UE, and indicating the UE to send uplink data signals in the frequency band corresponding to the initial position and the bandwidth.
Drawings
Fig. 1 is a schematic diagram illustrating an overview of a method for sharing spectrum resources according to an embodiment of the present invention;
fig. 2 is a schematic flowchart illustrating a specific process of a method for sharing spectrum resources according to an embodiment of the present invention;
fig. 3 is a functional structure diagram of a device for sharing spectrum resources according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems of high network establishment cost and easy communication blockage of a TD-LTE system in the prior art, in the embodiment of the present invention, in an authorized frequency band of a wireless television signal supported by an RRU device, based on a working bandwidth supported by a base station in the TD-LTE system, a working frequency band is configured in advance for the base station in the TD-LTE system, and after a cell is activated, whether the wireless television signal exists in the configured working frequency band is detected, and when it is determined that the wireless television signal exists, the working frequency band occupied by the wireless television signal is screened out from the configured working frequency band, and based on an idle frequency band in the current working frequency band except for the working frequency band occupied by the wireless television signal, a downlink data signal is sent to a UE, and a start position and a bandwidth corresponding to the idle frequency band are sent to the UE, when the UE sends an uplink data signal to the base station again, and transmitting an uplink data signal to the base station based on the frequency band corresponding to the start position and the bandwidth.
The present invention will be described in detail with reference to specific examples, but it is to be understood that the present invention is not limited to the examples.
Referring to fig. 1, in the embodiment of the present invention, a specific process of the method for sharing spectrum resources is as follows:
step 100: after activating a cell managed by a base station, detecting whether a wireless television signal exists in a current working frequency band, and screening out the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, wherein the current working frequency band of the base station is preconfigured based on a working bandwidth supported by the base station in an authorized frequency band of the wireless television signal supported by a Radio Remote Unit (RRU).
Preferably, in order to implement sharing of spectrum resources with the wireless television system, before activating a cell governed by the RRU device, a working frequency band and a center frequency point need to be configured in advance for a base station in the TD-LTE system based on a working bandwidth supported by the TD-LTE system in an authorized frequency band of wireless television signals supported by the RRU device.
For example: the authorized frequency bands of the wireless television signals supported by the RRU device are: 700MHz to 760MHz, and the operating bandwidth supported by the TD-LTE system is 20MHz, the operating frequency band of the base station may be configured as: 700 MHz-720 MHz, and the central frequency point is configured to be 710 MHz.
Specifically, when step 100 is executed, the following steps may be adopted, but not limited to:
firstly, after activating the cell managed by the base station, the base station performs the segmentation processing on the current working frequency band (namely, the pre-configured working frequency band) according to the set segmentation rule.
The base station then sequentially detects whether there is a wireless television signal in each segment.
Specifically, when the base station detects whether there is a wireless television signal in any one segment, the following methods may be adopted, but are not limited to:
and when the difference value between the total received power of the channel and the signal power in any one of the segments is determined to be greater than or equal to a set threshold value, judging that the wireless television signal exists in any one of the segments.
And finally, when the base station determines that the wireless television signal exists in any one of the segments, screening out the working frequency band occupied by the wireless television signal from the current working frequency band.
For example: continuing to use the above example, after the base station activates the cell governed by itself, based on the working bandwidth (8MHz) of the wireless television signal, the base station may divide the working bandwidth (20MHz) supported by itself into three parts, i.e., 4MHz, 8MHz, and perform the segmentation processing on the current working frequency band based on the different arrangement sequences of 4MHz, 8MHz, and the following description is given only by taking the arrangement sequence of 4MHz, 8MHz, and 8MHz as an example, and may divide the current working frequency band (i.e., the working frequency band configured as above: 700 MHz-720 MHz) into the following three parts:
a first section: 700 MHz-704 MHz (bandwidth of 4 MHz);
a second section: 705 MHz-712 MHz (bandwidth of 8 MHz);
and a third section: 713 MHz-720 MHz (8MHz bandwidth).
Then, when the base station determines that the difference value between the total received power of the channels in the first section and the signal power is greater than or equal to a set threshold value, the base station judges that the wireless television signals exist in the first section; and when the difference value between the total received power of the channels in the second section and the third section and the signal power is smaller than the set threshold value, judging that no wireless television signal exists in the second section and the third section.
Finally, the base station may determine that the current operating frequency band occupied by the wireless television signal is: 700MHz to 704 MHz.
Step 110: and the base station allocates frequency spectrum resources for the UE based on idle frequency bands except the working frequency band occupied by the wireless television signals in the current working frequency band.
Specifically, when the base station allocates spectrum resources for the UE, the following manners may be adopted, but are not limited to:
the base station determines an idle frequency band in the current working frequency band based on the working frequency band occupied by the wireless television signal, transmits a downlink data signal to the UE based on the idle frequency band, further determines an initial position and a bandwidth corresponding to the idle frequency band based on the idle frequency band, transmits the initial position and the bandwidth corresponding to the idle frequency band to the UE, and instructs the UE to transmit an uplink data signal in the frequency band corresponding to the initial position and the bandwidth.
For example: continuing with the above example, the base station determines, based on the current operating frequency band (700 MHz-704 MHz) occupied by the wireless television signal, that the idle frequency band in the current operating frequency band (i.e. the operating frequency band configured as described above: 700 MHz-720 MHz) is: 705 MHz-720 MHz, the base station sends downlink data signals to the UE based on 705 MHz-720 MHz of an idle frequency band, determines 705MHz and 15MHz of bandwidth corresponding to the idle frequency band based on 705 MHz-720 MHz of the idle frequency band, sends 705MHz and 15MHz of bandwidth corresponding to the idle frequency band to the UE, and instructs the UE to send uplink data signals on the frequency band corresponding to the 705MHz of the initial position and the 15MHz of the bandwidth.
Further, when the base station detects that there is no idle frequency band in the current working frequency band other than the working frequency band occupied by the wireless television signal, based on the current central frequency point (i.e., the previously configured central frequency point), a new central frequency point is reconfigured, and in an authorized frequency band of the wireless television signal supported by the RRU device, based on the reconfigured new central frequency point and a working bandwidth supported by the base station, a new working frequency band is reconfigured, and whether there is an idle frequency band in the new working frequency band other than the working frequency band occupied by the wireless television signal is detected, and when it is determined that there is an idle frequency band, the method for allocating spectrum resources is adopted (i.e., the specific method adopted in step 110) to allocate spectrum resources for the UE, which is not described herein again.
Further, the base station determines that no idle frequency band exists in the authorized frequency bands of the wireless television signals supported by the RRU device except for the working frequency band occupied by the wireless television signals, and further determines whether the RRU device supports the authorized high frequency band of the base station when determining that reconfiguration of a new working frequency band fails, and if so, allocates a spectrum resource to the UE based on the authorized high frequency band of the base station; otherwise, the UE is informed to return to the authorized frequency band of the GSM system or the TD-SCDMA system so as to ensure the basic call service.
For example: in the above example, when the base station determines that there is a wireless television signal in the first segment, the second segment, and the third segment, that is, when the base station determines that there is no idle frequency band in the current operating frequency band (that is, the configured operating frequency band: 700 MHz-720 MHz), a new central frequency point is reconfigured based on the current central frequency point (that is, the preconfigured central frequency point 710 MHz): 730MHz, then reconfiguring a new working frequency band according to a reconfigured new central frequency point (730MHz) and a working bandwidth (20MHz) supported by the RRU device in an authorized frequency band (700 MHz-760 MHz) of a wireless television signal supported by the RRU device, namely, reconfiguring the new working frequency band, namely, the reconfigured new working frequency band is 720 MHz-740 MHz, finally, detecting whether an idle frequency band except the working frequency band occupied by the wireless television signal exists in the new working frequency band, and when determining that the idle frequency band exists, allocating the frequency spectrum resource for the UE by adopting the method for allocating the frequency spectrum resource in the above example, which is not described herein again.
If the base station determines that no idle frequency band exists in the new configured operating frequency band (720 MHz-740 MHz), and determines that no idle frequency band exists in the new reconfigured operating frequency band (740 MHz-760 MHz), that is, when it determines that no idle frequency band exists in the authorized frequency band (700 MHz-760 MHz) of the radio television signal supported by the RRU device except the operating frequency band occupied by the radio television signal, it determines that the new reconfiguration fails to the operating frequency band, at this time, it needs to determine whether the RRU device supports the authorized high frequency band of the base station, and if so, spectrum resources are allocated to the UE based on the authorized high frequency band of the base station; otherwise, the UE is informed to return to the authorized frequency band of the GSM system or the TD-SCDMA system so as to ensure the basic call service.
The above embodiment is further described in detail by using a specific application scenario, and referring to fig. 2, a specific flow of the method for sharing spectrum resources in the embodiment of the present invention is as follows:
step 200: the base station configures a working frequency band and a central frequency point for the base station in the TD-LTE system in advance based on the working bandwidth supported by the TD-LTE system in the authorized frequency band of the wireless television signal supported by the RRU device.
Step 201: and after activating the cells managed by the base station, the base station carries out segmentation processing on the preset working frequency band according to a set segmentation rule.
Step 202: the base station sequentially detects whether there is a wireless television signal in each segment.
Preferably, when the base station detects whether there is a wireless television signal in any one of the segments, the following methods can be adopted, but not limited to:
and when the difference value between the total received power of the channel and the signal power in any one of the segments is determined to be greater than or equal to a set threshold value, judging that the wireless television signal exists in any one of the segments.
Step 203: the base station judges whether the wireless television signals exist in each segment or not based on the detection result, if so, the step 207 is executed; otherwise, step 204 is performed.
Step 204: and the base station screens out the working frequency band occupied by the wireless television signal from the current working frequency band.
Step 205: and the base station determines an idle frequency band in the current working frequency band based on the working frequency band occupied by the wireless television signal, and transmits a downlink data signal to the UE based on the idle frequency band.
Step 206: and the base station further determines the initial position and the bandwidth corresponding to the idle frequency band based on the idle frequency band, sends the initial position and the bandwidth corresponding to the idle frequency band to the UE, and indicates the UE to send an uplink data signal in the frequency band corresponding to the initial position and the bandwidth.
Step 207: and the base station reconfigures a new central frequency point based on the current central frequency point, and reconfigures a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the base station in the authorized frequency band of the wireless television signal supported by the RRU device.
Step 208: the base station detects whether there is an idle frequency band except the working frequency band occupied by the wireless television signal in the reconfigured working frequency band, if yes, step 205 is executed; otherwise, step 207 is performed.
Step 209: the base station judges whether an idle frequency band except for a working frequency band occupied by the wireless television signal exists in an authorized frequency band of the wireless television signal supported by the RRU device, if so, the step 205 is executed; otherwise (i.e. at this time, in the authorized frequency band of the wireless television signal supported by the RRU device, there is no idle frequency band), step 210 is executed.
Step 210: the base station judges whether the RRU device supports the authorized high frequency band of the base station, if yes, step 211 is executed; otherwise, step 212 is performed.
Step 211: and the base station allocates the frequency spectrum resource for the UE based on the authorized high frequency band.
Step 212: and the base station informs the UE to back to an authorized frequency band of a GSM system or a TD-SCDMA system for service communication.
Based on the foregoing embodiments, referring to fig. 3, in an embodiment of the present invention, an apparatus for sharing spectrum resources at least includes:
a screening unit 300, configured to detect whether a wireless television signal exists in a current working frequency band after activating a cell governed by the screening unit, and screen out a working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, where the current working frequency band is preconfigured by the configuration unit 310 based on a working bandwidth supported by the screening unit in an authorized frequency band of the wireless television signal supported by the RRU device;
an allocating unit 320, configured to allocate a spectrum resource to the user equipment UE based on an idle frequency band in the current operating frequency band, except for the operating frequency band occupied by the foregoing wireless television signal.
Preferably, the configuration unit 310 is further configured to:
when determining that no idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal, reconfiguring a new working frequency band in the authorized frequency band of the wireless television signal supported by the RRU device based on the working bandwidth supported by the RRU device, judging whether an idle frequency band exists in the new working frequency band except the working frequency band occupied by the wireless television signal, and allocating the spectrum resource to the UE based on the idle frequency band in the new working frequency band when determining that the idle frequency band exists in the new working frequency band.
Preferably, when reconfiguring a new operating band, the configuration unit 310 is configured to:
and reconfiguring a new central frequency point based on the current central frequency point, and reconfiguring a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the RRU device in the authorized frequency band of the wireless television signal supported by the RRU device.
Preferably, the distribution unit 320 is further configured to:
determining that no idle frequency band exists in authorized frequency bands of wireless television signals supported by an RRU device except for a working frequency band occupied by the wireless television signals, and further judging whether the RRU device supports an authorized high frequency band allocated to the RRU device by a TD-LTE system when judging that reconfiguration of a new working frequency band fails;
if so, allocating spectrum resources for the UE based on the authorized high frequency band allocated to the TD-LTE system;
otherwise, the UE is informed to return to the global system for mobile communication GSM system or the TD-SCDMA system.
Preferably, when detecting whether there is a wireless television signal in the current operating frequency band, the screening unit 300 is configured to:
and according to a set segmentation rule, performing segmentation detection on the current working frequency band, and determining that the wireless television signal exists in any one segment when the difference value between the total received power of the channel in the any one segment and the signal power is larger than or equal to a set threshold value.
Preferably, when allocating a spectrum resource to the UE based on an idle frequency band of the current operating frequency band except the operating frequency band occupied by the wireless television signal, the allocating unit 320 is configured to:
and sending a downlink data signal to the UE based on the idle frequency band, sending an initial position and a bandwidth corresponding to the idle frequency band to the UE, and indicating the UE to send an uplink data signal in the frequency band corresponding to the initial position and the bandwidth.
To sum up, in the embodiment of the present invention, a working frequency band is configured for a base station in advance in an authorized frequency band of a wireless television signal supported by an RRU device, and after a cell is activated, whether an idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal is automatically detected, and when the idle frequency band exists in the current working frequency band is determined, service communication between a UE and the base station is completed based on the idle frequency band, so that the base station in the TD-LTE system can flexibly utilize the idle frequency band in the authorized low frequency band of the wireless television system, and complete service communication with the UE without affecting wireless television signal transmission, thereby improving the spectrum utilization rate of the wireless television system, avoiding the problem of communication blocking due to co-frequency interference in the authorized frequency band of the base station, and ensuring the overall performance of the TD-LTE system, and after the cell is activated, the wireless television signal is automatically detected, even if the wireless television signal exists in the configured working frequency band, the frequency spectrum can be rapidly avoided, the smooth transmission of the wireless television signal is further ensured, in addition, the service communication between the UE and the base station is completed through the authorized low frequency band of the wireless television system, the coverage range is increased, and the network establishment cost is reduced.
Further, the base station determines that no idle frequency band exists in the authorized frequency bands of the wireless television signals supported by the RRU device, and determines that reconfiguration of a new working frequency band fails, allocates a spectrum resource to the UE based on the authorized high frequency band after determining that the RRU device supports the authorized high frequency band of the RRU device, or notifies the UE to back to the GSM system or the TD-SCDMA system after determining that the RRU device does not support the authorized high frequency band of the RRU device. Therefore, even if the base station in the TD-LTE system can not perform service communication in the authorized frequency band of the wireless television system supported by the RRU device, the base station can automatically back to the authorized high frequency band of the base station to complete the service communication with the UE, and when the RRU device does not support the authorized high frequency band of the RRU device, the base station in the TD-LTE system can automatically back to the GSM system or the TD-SCDMA system, so that the service communication between the base station and the UE is not interrupted.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments 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 encompass such modifications and variations.
Claims (10)
1. A method of sharing spectrum resources, comprising:
after activating a cell managed by a base station, detecting whether a wireless television signal exists in a current working frequency band, and screening out the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, wherein the current working frequency band of the base station is preconfigured based on a working bandwidth supported by the base station in an authorized frequency band of the wireless television signal supported by a Radio Remote Unit (RRU);
the base station allocates frequency spectrum resources for User Equipment (UE) based on idle frequency bands except the working frequency band occupied by the wireless television signals in the current working frequency band;
the method for detecting whether the wireless television signal exists in the current working frequency band by the base station comprises the following steps:
and the base station performs segmentation detection on the current working frequency band according to a set segmentation rule, and determines that the wireless television signal exists in any one segment when the difference value between the total received power of the channel in the any one segment and the signal power is more than or equal to a set threshold value.
2. The method of claim 1, further comprising:
when the base station determines that no idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal, in the authorized frequency band of the wireless television signal supported by the RRU device, a new working frequency band is reconfigured again based on the working bandwidth supported by the base station, whether an idle frequency band exists in the new working frequency band except the working frequency band occupied by the wireless television signal is judged, and when the idle frequency band exists in the new working frequency band, spectrum resources are allocated to the UE based on the idle frequency band in the new working frequency band.
3. The method of claim 2, wherein reconfiguring the new operating band comprises:
and the base station reconfigures a new central frequency point based on the current central frequency point, and reconfigures a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the base station in the authorized frequency band of the wireless television signal supported by the RRU device.
4. The method of claim 2, further comprising:
the base station determines that no idle frequency band exists in the authorized frequency bands of the wireless television signals supported by the RRU device except the working frequency band occupied by the wireless television signals, and further judges whether the RRU device supports the authorized high frequency band allocated to the base station by the time-sharing long-term evolution TD-LTE system when judging that the new working frequency band is not configured;
if yes, allocating spectrum resources for the UE based on an authorized high frequency band allocated to the base station by the TD-LTE system;
otherwise, the UE is informed to return to a global system for mobile communication (GSM) system or a time division synchronous code division multiple access (TD-SCDMA) system.
5. The method as claimed in claim 1, 2 or 3, wherein the base station allocates spectrum resources for the UE based on the free frequency band except the working frequency band occupied by the wireless television signal in the current working frequency band, comprising:
and the base station sends downlink data signals to the UE based on the idle frequency band, sends the initial position and the bandwidth corresponding to the idle frequency band to the UE, and indicates the UE to send uplink data signals in the frequency band corresponding to the initial position and the bandwidth.
6. An apparatus for sharing spectrum resources, comprising:
the device comprises a screening unit, a configuration unit and a Remote Radio Unit (RRU), wherein the screening unit is used for detecting whether a wireless television signal exists in a current working frequency band after activating a cell governed by the screening unit, and screening the working frequency band occupied by the wireless television signal from the current working frequency band when the wireless television signal exists, wherein the current working frequency band is pre-configured by the configuration unit based on a working bandwidth supported by the configuration unit in an authorized frequency band of the wireless television signal supported by the RRU;
the allocation unit is used for allocating frequency spectrum resources to the user equipment UE based on idle frequency bands except the working frequency band occupied by the wireless television signals in the current working frequency band;
wherein, when detecting whether there is a wireless television signal in the current working frequency band, the screening unit is configured to:
and according to a set segmentation rule, performing segmentation detection on the current working frequency band, and determining that the wireless television signal exists in any one segment when the difference value between the total received power of the channel in the any one segment and the signal power is larger than or equal to a set threshold value.
7. The apparatus of claim 6, wherein the configuration unit is further to:
when determining that no idle frequency band exists in the current working frequency band except the working frequency band occupied by the wireless television signal, reconfiguring a new working frequency band in the authorized frequency band of the wireless television signal supported by the RRU device based on the working bandwidth supported by the RRU device, judging whether an idle frequency band exists in the new working frequency band except the working frequency band occupied by the wireless television signal, and allocating spectrum resources to the UE based on the idle frequency band in the new working frequency band when determining that the idle frequency band exists in the new working frequency band.
8. The apparatus as claimed in claim 7, wherein said configuration unit is configured to, when reconfiguring the new operating band:
and reconfiguring a new central frequency point based on the current central frequency point, and reconfiguring a new working frequency band based on the reconfigured new central frequency point and the working bandwidth supported by the RRU device in the authorized frequency band of the wireless television signal supported by the RRU device.
9. The apparatus of claim 7, wherein the allocation unit is further to:
determining that no idle frequency band exists in authorized frequency bands of wireless television signals supported by an RRU device except for a working frequency band occupied by the wireless television signals, and further judging whether the RRU device supports an authorized high frequency band allocated to the RRU device by a time-sharing long-term evolution TD-LTE system when judging that the new working frequency band is not configured;
if yes, allocating spectrum resources for the UE based on the authorized high frequency band allocated to the TD-LTE system;
otherwise, the UE is informed to return to a global system for mobile communication (GSM) system or a time division synchronous code division multiple access (TD-SCDMA) system.
10. The apparatus according to claim 6, 7 or 8, wherein when allocating spectrum resources for the UE based on a free frequency band other than the operating frequency band occupied by the wireless television signal in the current operating frequency band, the allocating unit is configured to:
and sending downlink data signals to the UE based on the idle frequency band, sending the initial position and the bandwidth corresponding to the idle frequency band to the UE, and indicating the UE to send uplink data signals in the frequency band corresponding to the initial position and the bandwidth.
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