CN103702379A - Method and device for switching carriers - Google Patents

Abstract

The invention provides a method and a device for switching carriers. The method comprises the steps of starting a main carrier and a standby carrier, wherein the frequency spectrums of the main carrier and the standby carrier are both white frequency spectrums; indicating UE (User Equipment) which is accessed to the main carrier to be switched from the main carrier to the standby carrier when broadcasting interference on the main carrier is detected. According to the method and the device, provided by the invention, by simultaneously starting the main carrier and the standby carrier, the UE which is accessed to the main carrier can be indicated to be switched from the main carrier to the standby carrier when the broadcasting interference on the main carrier is detected, the situation that the main carrier is successfully switched to an interference-free carrier when being subjected to the broadcasting interference is ensured, and the business continuity is ensured.

Description

Carrier switching method and device

technical field

The present invention relates to a spectrum switching technology, in particular to a carrier switching method and device for a cognitive radio service.

Background technique

In recent years, with the gradual digitalization of radio and television signals, a large number of low-frequency bands are idle, and the frequency bands are relatively wide. The idle TV broadcasting frequency bands are called "white spectrum fields". For the scarce long-term evolution (Long Term Evolution, LTE) In terms of spectrum resources, the white spectrum is a very good frequency band, and the frequency band is easy to obtain, which is conducive to greatly improving the access bandwidth. However, the ownership of the frequency band in the white spectrum field belongs to the broadcasting system, and the deployment of the white spectrum for non-broadcasting systems must ensure that the broadcasting Signals are not affected.

The application of white spectrum must use cognitive radio technology (Cognitive Radio, CR). Cognitive radio technology can reliably sense the spectrum environment on a wide frequency band, detect the emergence of legal authorized users (primary users), and can adaptively occupy real-time The available local spectrum, and at the same time, when encountering radio and television signal interference during the entire communication process, the original white spectrum frequency band must take evasive measures and switch to other available carriers.

However, during the handover process, due to the process of searching, activating, and configuring available carriers, the handover time is too long, and the problem of user equipment (User Equipment, UE) disconnection often occurs, causing service interruption.

Contents of the invention

The embodiment of the present invention provides a carrier switching method and device, which solves the problem of service interruption during the switching process when the main carrier encounters radio and television interference and needs to be switched.

In a first aspect, an embodiment of the present invention provides a carrier switching method, including:

enabling the main carrier and the backup carrier, the spectrum of the main carrier and the spectrum of the backup carrier are white spectrum;

When broadcasting interference is detected on the main carrier, instruct a user equipment UE that has accessed the main carrier to switch from the main carrier to the backup carrier.

In a first possible implementation manner of the first aspect, before enabling the main carrier and the backup carrier, further includes:

determining the spectrum of the primary carrier and the spectrum of the backup carrier from available white spectrum;

Resource configuration is performed on the main carrier and the backup carrier, where air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent.

According to the first possible implementation manner of the first aspect, in a second possible implementation manner, the resource configuration includes at least one of the following configurations:

Air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the evolved universal terrestrial radio access network, resource scheduling pre-allocation parameter configuration.

With reference to the first aspect, any one of the first to second possible implementations of the first aspect, in a third possible implementation of the first aspect, the indication is accessed in the The UE of the main carrier switches from the main carrier to the backup carrier, including:

reducing the transmit power of the primary carrier, so that the UE switches from the primary carrier to the standby carrier when detecting a decrease in signal-to-noise ratio on the primary carrier;

or,

Sending a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the standby carrier according to the carrier switching instruction.

In combination with the first aspect, any one of the first to third possible implementations of the first aspect, in the fourth possible implementation of the first aspect, the enabling of the main carrier and the backup carrier ,include:

activating the main carrier and the backup carrier, and both the main carrier and the backup carrier are in a working state;

or,

The main carrier and the backup carrier are enabled, and the main carrier is in a working state, and the backup carrier is in a redundant state, an energy-saving state, or a state to be activated.

According to the fourth possible implementation of the first aspect, in the fifth possible implementation,

Before instructing the UE to switch from the main carrier to the standby carrier, it includes:

When the main carrier is in the working state and the backup carrier is in the redundant state, the energy saving state or the state to be activated, restore the backup carrier to the working state.

With reference to the first aspect and any one of the first to fifth possible implementations of the first aspect, in a sixth possible implementation of the first aspect, the indication is accessed to the After the UE of the primary carrier is switched from the primary carrier to the backup carrier, it also includes:

judging whether the UE has completed carrier switching;

If completed, then release the resources of the primary carrier, set the backup carrier as a new primary carrier, reselect a carrier resource from the available carrier resources as a new backup carrier, and perform resource processing on the new backup carrier. Configuring and enabling the new backup carrier.

In a second aspect, an embodiment of the present invention provides a base station, including:

The activation module is used to activate the main carrier and the backup carrier, the spectrum of the main carrier and the spectrum of the backup carrier are both white spectrum.

A detection module, configured to detect the signal on the main carrier;

An instructing module, configured to instruct the UE to switch from the main carrier to the backup carrier when the detection module detects broadcast interference on the main carrier;

In a first possible implementation manner of the second aspect, the base station further includes:

A determination module, configured to determine the frequency spectrum of the main carrier and the frequency spectrum of the backup carrier from available white spectrum before the activation module activates the main carrier and the backup carrier;

The configuration module is configured to perform resource configuration on the main carrier and the backup carrier before the enabling module activates the main carrier and the backup carrier, wherein the air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent.

According to the first possible implementation manner of the second aspect, in the second possible implementation manner, the configuration module is used for at least one of the following configurations:

Air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the evolved universal terrestrial radio access network, resource scheduling pre-allocation parameter configuration.

In combination with the second aspect, any one of the first to second possible implementations of the second aspect, in a third possible implementation of the second aspect, the indication module is specifically used to : reducing the transmit power of the primary carrier, so that the UE switches from the primary carrier to the standby carrier when detecting a decrease in the signal-to-noise ratio on the primary carrier;

or,

Sending a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the standby carrier according to the carrier switching instruction.

In combination with the second aspect, any one of the first to third possible implementations of the second aspect, in a fourth possible implementation of the second aspect, the enabling module is specifically used to : enabling the main carrier and the backup carrier, and both the main carrier and the backup carrier are in working state;

or,

The main carrier and the backup carrier are enabled, and the main carrier is in a working state, and the backup carrier is in a redundant state, an energy-saving state, or a state to be activated.

According to the fourth possible implementation of the second aspect, the fifth possible implementation also includes:

A recovery module, configured to recover when the main carrier is in a working state and the backup carrier is in a redundant state or an energy-saving state before the instructing module instructs the UE to switch from the main carrier to the backup carrier The backup carrier is in working state.

In combination with the second aspect, any one of the first to fifth possible implementations of the second aspect, the sixth possible implementation of the second aspect further includes:

A judging module, configured to judge whether the UE has completed carrier switching;

A release module, configured to release resources of the primary carrier after the judging module judges that the UE completes carrier switching;

A setting module, configured to set the backup carrier as a new primary carrier after the judging module judges that the UE completes carrier switching;

The determining module is further configured to reselect a carrier resource from available carrier resources as a new backup carrier after the judging module judges that the UE completes carrier switching;

The configuration module is further configured to configure resources for the new backup carrier;

The enabling module is further configured to enable the new backup carrier.

In a third aspect, an embodiment of the present invention provides a base station, including: a baseband processing unit and a first radio frequency processing unit and a second radio frequency processing unit connected to the baseband processing unit;

The baseband processing unit is configured to enable a main carrier on the first radio frequency unit and use the main carrier to communicate with the user equipment UE, enable a backup carrier on the second radio frequency unit, and, when on the main carrier Instructing the UE to switch from the primary carrier to the standby carrier when broadcast interference is detected on the network.

In a first possible implementation manner of the third aspect, the baseband processing unit is specifically configured to:

Before enabling the main carrier on the first radio frequency unit and the standby carrier on the second radio frequency unit, determine the spectrum of the main carrier and the spectrum of the backup carrier from available white spectrum;

Resource configuration is performed on the main carrier and the backup carrier, where air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent.

In a second possible implementation manner of the third aspect, the baseband processing unit performs resource configuration on the main carrier and the backup carrier, including configuring at least one of the following:

Air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the evolved universal terrestrial radio access network, resource scheduling pre-allocation parameter configuration.

In combination with the third aspect, any one of the first to second possible implementations of the third aspect, in the third possible implementation of the third aspect, the baseband processing unit specifically uses In: reducing the transmit power of the main carrier enabled on the first radio frequency processing unit, so that the UE detects that the signal-to-noise ratio on the main carrier decreases The carrier is switched to the standby carrier enabled on the second radio frequency processing unit;

or,

Sending a carrier switching instruction to the UE by the first radio frequency processing unit, so that the UE switches from the main carrier enabled on the first radio frequency processing unit to enabled on the second radio frequency processing unit according to the carrier switching instruction of the backup carrier.

In combination with the third aspect, any one of the first to third possible implementations of the third aspect, in a fourth possible implementation of the third aspect, the main carrier and the standby Carriers are all in working condition;

or,

The main carrier is in working state, and the backup carrier is in any one of the following three types:

Redundant state, energy-saving state and to-be-activated state.

In combination with any of the fourth possible implementation manners of the third aspect, in a fifth possible implementation manner of the third aspect, the baseband processing unit is further configured to: when the main carrier is working state, when the backup carrier is in a redundant state, an energy-saving state or a state to be activated, restore the backup carrier to a working state.

In combination with the third aspect, any one of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, the baseband processing unit is further configured to :

judging whether the UE has completed carrier switching;

If completed, then release the resources of the main carrier enabled on the first radio frequency processing unit, set the backup carrier as a new main carrier, reselect a carrier resource from the available carrier resources as a new backup carrier, and Perform resource configuration on the new standby carrier and activate the new standby carrier on the first radio frequency processing unit.

The carrier switching method and device provided by the embodiments of the present invention, the method enables the main carrier and the backup carrier at the same time, and when broadcasting interference is detected on the main carrier currently used by the user equipment UE, the UE is instructed to switch from the main carrier The standby carrier ensures that when the main carrier encounters radio and television interference, the UE is smoothly handed over to a carrier without interference, so that service continuity is guaranteed.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic flowchart of Embodiment 1 of a carrier switching method according to the present invention;

FIG. 2 is a flow chart of interactive signaling in Embodiment 2 of the carrier switching method of the present invention;

FIG. 3 is a flow chart of interactive signaling in Embodiment 3 of the carrier switching method of the present invention;

FIG. 4 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention;

FIG. 5 is a schematic structural diagram of Embodiment 2 of the base station of the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

FIG. 1 is a schematic flowchart of Embodiment 1 of a carrier switching method according to the present invention. The execution subject of this embodiment is a long-term evolution (LongTerm Evolution, LTE) base station configured with a spectrum detection engine (Spectrum Sensor Engine, SSE). The base station can be implemented by software and/or hardware. The solution of this embodiment is applied to base stations and Between UEs, the UE can quickly switch from the currently used carrier to the standby carrier. As shown in Figure 1, the method of the present embodiment includes:

Step 101, enabling a main carrier and a backup carrier, where the spectrum of the main carrier and the spectrum of the backup carrier are both white spectrum.

Wherein, before enabling the main carrier and the backup carrier, it also includes: determining the spectrum of the main carrier and the spectrum of the backup carrier from the available white spectrum; performing resource configuration on the main carrier and the backup carrier, wherein, The air interface bearer parameters and synchronization information of the main carrier and the standby carrier are consistent.

Wherein, the resource configuration for the main carrier and the backup carrier may include: air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the Evolved Universal Terrestrial Radio Access Network, resource scheduling At least one of the parameter configurations is preassigned.

Specifically, the activating the main carrier and the standby carrier includes: enabling the main carrier and the standby carrier, and both the main carrier and the standby carrier are in a working state; or, activating the main carrier and the standby carrier, and The primary carrier is in a working state, and the backup carrier is in a redundant state, an energy-saving state, or a state to be activated.

Step 102: Instruct user equipment UE connected to the main carrier to switch from the main carrier to the backup carrier when broadcasting interference is detected on the main carrier.

Wherein, the instructing the UE accessing the primary carrier to switch from the primary carrier to the standby carrier includes: reducing the transmit power of the primary carrier, so that the UE detects that the primary carrier Switch from the primary carrier to the backup carrier when the signal-to-noise ratio of the signal-to-noise ratio decreases; or, send a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the backup carrier according to the carrier switching instruction carrier.

Wherein, before instructing the UE accessing the main carrier to switch from the main carrier to the standby carrier, it includes: when the main carrier is in the working state, the standby carrier is in the redundant state, the energy saving state or When the state is to be activated, restore the backup carrier to the working state.

Wherein, after step 102, it also includes: judging whether the UE has completed carrier switching; if completed, releasing the resources of the primary carrier, setting the backup carrier as a new primary carrier, and reselecting a carrier from available carrier resources. The carrier resource is used as a new backup carrier, resource configuration is performed on the new backup carrier and the new backup carrier is enabled.

In this embodiment, when the SSE configured by the base station detects a signal with a bandwidth of 8MHz on the main carrier, it indicates that there is radio and television signal interference on the main carrier. At this time, when the main carrier and the backup carrier are both in the working state , the base station instructs the UE to switch from the main carrier to the backup carrier by reducing the transmit power and/or sending a switching instruction; when the main carrier is in the working state and the backup carrier is in the redundant state or the energy saving The standby carrier in the redundant state or energy-saving state returns to the normal transmission power, so that the standby carrier is in the working state. For the scenario where the standby carrier activated in this embodiment is in the waiting state, the base station needs to activate the standby carrier first, so that the standby carrier is in the active state. working state, and then instruct the UE to switch from the primary carrier to the standby carrier.

The carrier switching method provided by the embodiment of the present invention, the method enables the main carrier and the backup carrier at the same time, and when broadcasting interference is detected on the main carrier currently used by the user equipment UE, the UE is instructed to switch from the main carrier to the selected carrier. The backup carrier mentioned above ensures that the main carrier is smoothly switched to a carrier without interference when it encounters radio and television interference, so that business continuity is guaranteed.

FIG. 2 is a flow chart of interactive signaling in Embodiment 2 of the carrier switching method of the present invention. As shown in FIG. 2 , the method in this embodiment is an interactive embodiment corresponding to the combination of the foregoing embodiments. Specific methods include:

Step 201, the base station activates the active and standby carriers.

In this embodiment, before the base station activates the active and standby carriers, the base station first determines the frequency spectrum of the main carrier and the spectrum of the standby carrier from the available white spectrum, and configures resources for the main carrier and the standby carrier, Wherein, air interface bearer parameters and synchronization information of the main carrier and the standby carrier are consistent. Specific resource configuration may include air interface bearer parameter configuration, carrier synchronization information configuration, E-UTRAN Radio Access Bearer (E-UTRAN Radio Access Bearer, E-UTRAN) Evolved Universal Terrestrial Radio Access Network (E-UTRAN) RAB) establishes parameter configuration in advance or resource scheduling pre-allocation parameter configuration, wherein the resource configuration for the backup carrier in advance can improve the switching speed during carrier switching.

In this embodiment, the main carrier and the backup carrier are activated, and the main carrier and the backup carrier can both be in the working state, work according to the normal transmission power, and when the main carrier and the backup carrier are in the working state, the main carrier UEs can be accessed on both the backup carrier; or, the main carrier and the backup carrier are activated, and the main carrier is in the working state, the UE is accessed on the main carrier, and the backup carrier is in the redundant state and energy-saving state or any one of the states to be activated, and when the backup carrier is in the redundant state, energy-saving state or the state to be activated, no UE is connected to the backup carrier, wherein when the backup carrier is in the redundant state, the transmission of the backup carrier The power can be in the normal transmission power or in the low power state. When the standby carrier is in the energy-saving state, the transmission power of the standby carrier is lower than the normal transmission power. When the standby carrier is in the state to be activated, the transmission power of the standby carrier is zero.

Step 202, the UE searches for a carrier.

In this embodiment, after the UE accesses the network, it starts to search for available carriers.

Step 203, the UE sends a carrier access request to the base station.

In this embodiment, after searching for an available carrier in step 202, the UE sends a carrier access request to the base station, requesting the base station to determine the carrier that the UE should currently access.

Step 204, the base station sends a carrier access response to the UE.

In this embodiment, the base station sends a carrier access response to the UE according to the carrier access request, and the carrier access response includes the carrier information that the base station should currently access to the UE. When accessing the UE, the base station determines that the carrier that the UE should currently access is the primary carrier, or the base station determines that the carrier that the UE should currently access is the backup carrier. When the base station determines that the carrier that the UE should currently access is the primary carrier, the carrier access The input response also includes the information of the backup carrier. Correspondingly, when the base station determines that the carrier that the UE should currently access is the backup carrier, the carrier access response also includes the information of the main carrier. For the UE accessing the backup carrier, The standby carrier of the UE is the primary carrier; when only the primary carrier is enabled by the base station to access the UE, the base station determines that the carrier that the UE should currently access can only be the primary carrier. At this time, the carrier access response except the base station The determined carrier information that the UR should currently access, that is, information about the main carrier, also includes information about the backup carrier.

In step 205, the UE completes carrier access.

In this embodiment, the UE accesses the corresponding carrier according to the carrier access response sent by the base station, and stores the information of the backup carrier. In this embodiment, the carrier accessed by the UE may be a main carrier or a backup carrier.

Step 206, the SSE reports the interference to the Operation Maintenance (OM) system.

In this embodiment, when the SSE detects radio and television signal interference on the main carrier, it reports the interference to an operation and maintenance (Operation Maintenance, OM) system.

Step 207, the OM system sends a switching instruction to the base station according to the signal interference message.

Step 208, the base station receives the switching instruction, and reduces the transmit power of the main carrier.

In this embodiment, according to the received handover instruction, when the enabled active and standby carriers are both in the working state, that is, both the active and standby carriers are connected to the UE, at this time, the base station reduces the transmit power of the main carrier to indicate access to the main carrier. The UE of the carrier starts to switch; when the base station activates the main carrier and the main carrier is in the working state, the UE is connected to the main carrier, and the backup carrier is in the redundant state, energy-saving state or to-be-activated state, and the backup carrier is not connected At this time, for the standby carrier in the low power redundancy state and energy-saving state, the base station restores the standby carrier to the working state, that is, it is in the normal transmission power, and can access the UE. For the standby carrier in the state to be activated, the base station Activate the carrier to be activated, restore the standby carrier to the working state, then the base station reduces the transmit power of the main carrier, and instructs the UE accessing the main carrier to start the handover operation.

Step 209, the UE detects that the Signal to Interference plus Noise Ratio (SINR) decreases, and searches for a backup carrier.

In this embodiment, the UE accessing the main carrier detects that the SINR on the main carrier has decreased, and when the SINR on the main carrier is less than the preset SINR threshold value, the UE searches for the backup carrier according to the backup carrier information saved in step 205, And execute step 2010, in this embodiment, the preset SINR threshold value is based on the UE reporting the SINR first to the base station, the base station determines a preset SINR threshold value according to the SINR value reported by the UE, and uses the preset SINR threshold value The threshold value is sent to the UE. When the UE detects that the current SINR is lower than the preset SINR threshold value, it starts to search for the backup carrier on the one hand, and sends a handover request to the base station on the other hand.

Step 2010, the UE sends a handover request to the base station.

Step 2011, the base station sends a handover request response to the UE.

In this embodiment, the base station sends a response allowing the handover to the UE according to the handover request.

Step 2012, the UE switches from the main carrier to the backup carrier.

In this embodiment, the UE switches from the primary carrier to the backup carrier according to the switching request response.

Step 2013, the UE sends a handover completion message to the base station.

Step 2014, the base station releases the resources of the primary carrier, and uses the standby carrier as a new primary carrier.

In this embodiment, when the base station receives the handover completion message sent by the UE, the base station can know that the UE has switched to the standby carrier. At this time, the base station releases the resources of the primary carrier, then closes the primary carrier, and sets the secondary carrier as the new primary carrier. .

Step 2015, the base station sends a handover completion message to the OM system.

In this embodiment, after the base station releases the main carrier resource, it sends a handover completion message to the OM system.

Step 2016, the base station configures a new backup carrier, and activates the new backup carrier.

In this embodiment, after the base station completes carrier switching, a carrier is reselected from the available carrier resources as a new backup carrier, and the new backup carrier is configured. After the configuration is completed, the new backup carrier is enabled, and the new backup carrier The carrier can be in working state, redundant state, energy-saving state or to-be-activated state.

In this embodiment, when the UE detects that the signal-to-noise ratio (SNR) on the main carrier decreases, the UE will search for the backup carrier enabled by the base station, where the backup carrier is activated by the base station while the main carrier is enabled, and the activated backup carrier is in working mode. state, redundant state or energy-saving state, the relevant parameters of the backup carrier have been configured in advance, and when the UE searches for the backup carrier, it can quickly switch over, which solves the problem in the prior art that the main carrier encounters When radio and television interfere, the UE handover time exceeds the system handover guard interval time, which causes the problem of UE disconnection and service discontinuity.

FIG. 3 is a flow chart of interactive signaling in Embodiment 3 of the carrier switching method of the present invention. As shown in FIG. 3 , the specific methods include:

Steps 301 to 307: are the same as steps 201 to 207 of the second embodiment above, please refer to the specific description of steps 201 to 207 of the second embodiment.

Step 308, the base station starts carrier switching.

In this embodiment, the base station receives the switching instruction, starts the carrier switching, and restores the standby carrier to the working state, that is, it is in the normal transmission power, and can access the UE for the standby carrier in the low-power redundancy state and the energy-saving state. For the standby carrier in the state of activation, the base station activates the carrier to be activated, and restores the standby carrier to the working state. For the standby carrier in the working state, when the base station receives the handover instruction, step 309 may be directly performed.

Step 309, the base station sends a switching instruction to the UE;

In this embodiment, the base station sends a handover instruction to the UE, and the handover instruction includes the frequency point information of the standby carrier to be handed over.

Step 3010, the UE switches from the main carrier to the standby carrier;

In this embodiment, the UE switches from the primary carrier to the standby carrier according to the switching instruction.

Step 3011, step 3012, step 3013, and step 3014 are the same as step 2013, step 2014, step 2015, and step 2016 of the second embodiment, and reference may be made to the second embodiment, which will not be discussed again in this embodiment.

In this embodiment, when the UE receives the handover instruction, the UE performs handover according to the handover instruction, wherein the backup carrier is activated by the base station while the main carrier is activated, and the activated backup carrier is in a working state, a redundant state, or an energy-saving state. The relevant parameters of the standby carrier have been configured in advance, which can be switched quickly, which solves the problem that in the prior art, when the main carrier encounters radio and television interference, the UE switching time exceeds the system switching guard interval, which causes The problem of service discontinuity due to UE disconnection.

FIG. 4 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention. As shown in FIG. 4 , the base station 40 provided in this embodiment includes: an enabling module 401 , a detecting module 402 and an indicating module 403 .

Wherein, the enabling module 401 is configured to activate a main carrier and a backup carrier, and the spectrum of the main carrier and the spectrum of the backup carrier are both white spectrum.

A detection module 402, configured to detect a signal on the main carrier currently used by the user equipment UE;

The instructing module 403 is configured to instruct a UE connected to the main carrier to switch from the main carrier to the backup carrier when the detection module 402 detects broadcast interference on the main carrier.

The base station provided in this embodiment can be used to implement the technical solution of the first method embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, and will not be repeated here.

FIG. 5 is a schematic structural diagram of Embodiment 2 of the base station of the present invention. The base station 40 provided in this embodiment further includes:

The determination module 404 is used to determine the spectrum of the main carrier and the spectrum of the backup carrier from the available white spectrum before the activation module enables the main carrier and the backup carrier;

The configuration module 405 is configured to perform resource configuration on the main carrier and the backup carrier before the enabling module activates the main carrier and the backup carrier, wherein the air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent.

The configuration module 405 is specifically used for at least one of the following configurations: air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration, resource scheduling pre-allocation parameter configuration.

Optionally, the instructing module 403 is specifically configured to: reduce the transmit power of the primary carrier, so that the UE switches from the primary carrier to the standby carrier when detecting a decrease in the signal-to-noise ratio on the primary carrier ;

or,

Sending a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the standby carrier according to the carrier switching instruction.

Optionally, the activation module 401 is specifically configured to: activate the main carrier and the backup carrier, and both the main carrier and the backup carrier are in a working state;

or,

The primary carrier and backup carrier are activated, and the primary carrier is in working state, and the backup carrier is any one of the following three types:

Redundant state, energy-saving state and to-be-activated state.

Optionally, the base station 40 also includes:

A recovery module, configured to switch from the main carrier to the backup carrier when the main carrier is in the working state and the backup carrier is in the redundant state before the indication module instructs the UE connected to the main carrier to switch from the main carrier to the backup carrier , the energy-saving state or the state to be activated, restore the standby carrier to the working state.

Optionally, the base station 40 also includes:

A judging module 407, configured to judge whether the UE completes carrier switching.

The releasing module 408 is configured to release the resources of the primary carrier after the judging module judges that the UE completes carrier switching.

The setting module 409 is configured to set the backup carrier as a new primary carrier after the judging module judges that the UE completes carrier switching.

Further, the determining module 404 is further configured to reselect a carrier resource from available carrier resources as a new backup carrier.

The configuration module 405 is also configured to configure resources for the new backup carrier.

The enabling module 401 is also used for enabling the new backup carrier.

The base station provided in this embodiment can be used to implement the technical solution of the first method embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, and will not be repeated here.

FIG. 6 is a schematic structural diagram of Embodiment 3 of a base station according to the present invention. The base station 50 provided in this embodiment includes:

A baseband processing unit 501 and a first radio frequency processing unit 502 and a second radio frequency processing unit 503 connected to the baseband processing unit 501 .

Wherein, the baseband processing unit 501 is configured to enable a main carrier on the first radio frequency unit 502 and use the main carrier to communicate with the user equipment UE, enable a backup carrier 503 on the second radio frequency unit, and, when the main carrier is used on the main When radio and television interference is detected on the carrier, instruct the UE connected to the main carrier to switch from the main carrier to the backup carrier.

The base station provided in this embodiment can be used to implement the technical solution of the first method embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, and will not be repeated here.

On the basis of the foregoing embodiments, optionally, the baseband processing unit 501 is specifically configured to:

Before enabling the main carrier on the first radio frequency unit 502 and the standby carrier on the second radio frequency unit 503, determine the spectrum of the main carrier and the spectrum of the backup carrier from the available white spectrum, the main carrier and the backup carrier are both in working status;

or,

The primary carrier is in a working state, and the standby carrier is in a redundant state or an energy-saving state.

The baseband processing unit 501 performs resource configuration on the main carrier and the standby carrier, where air interface bearer parameters and synchronization information of the main carrier and the standby carrier are consistent. The baseband processing unit performs resource configuration on the main carrier and the backup carrier, including configuring at least one of the following:

Air interface bearer parameter configuration, carrier synchronization information configuration, wireless access bearer E-RAB pre-establishment parameter configuration, resource scheduling pre-allocation parameter configuration.

Optionally, the baseband processing unit 501 is specifically configured to: reduce the transmit power of the main carrier enabled on the first radio frequency processing unit, so that the UE detects that the signal-to-noise ratio on the main carrier is reduced switch from the main carrier enabled on the first radio frequency processing unit to the backup carrier enabled on the second radio frequency processing unit;

or,

Sending a carrier switching instruction to the UE by the first radio frequency processing unit, so that the UE switches from the main carrier enabled on the first radio frequency processing unit to enabled on the second radio frequency processing unit according to the carrier switching instruction of the backup carrier.

Optionally, both the main carrier and the backup carrier are in working state;

or,

The main carrier is in working state, and the backup carrier is in any one of the following three types:

Redundant state, energy-saving state and to-be-activated state.

Optionally, the baseband processing unit 501 is specifically configured to restore the standby carrier to the working state when the main carrier is in the working state and the standby carrier is in the redundant state, energy-saving state, or to-be-activated state.

Optionally, the baseband processing unit 501 is specifically configured to: determine whether the UE completes carrier switching;

If completed, release the resources of the main carrier enabled on the first radio frequency processing unit, and set the backup carrier as a new main carrier;

Reselecting a carrier resource from available carrier resources as a new backup carrier, performing resource configuration on the new backup carrier, and enabling the new backup carrier on the first radio frequency processing unit.

In this embodiment, the base station 50 further includes:

The data transceiving unit 500 and the antenna 504, wherein the data transceiving unit is used for interacting UE data with the network side of the LTE system, and the antenna 504 is used for sending and receiving data on the active and standby carriers.

The base station provided in this embodiment can be used to implement the technical solution of the first method embodiment shown in FIG. 1 , and its implementation principle and technical effect are similar, and will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (21)

1. A carrier switching method, characterized in that, comprising: enabling the main carrier and the backup carrier, the spectrum of the main carrier and the spectrum of the backup carrier are white spectrum; When broadcasting interference is detected on the main carrier, instruct a user equipment UE that has accessed the main carrier to switch from the main carrier to the backup carrier. 2. The method according to claim 1, further comprising: before enabling the main carrier and the backup carrier: determining the spectrum of the primary carrier and the spectrum of the backup carrier from available white spectrum; Resource configuration is performed on the main carrier and the backup carrier, where air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent. 3. The method according to claim 2, wherein the resource configuration includes at least one of the following configurations: Air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the evolved universal terrestrial radio access network, resource scheduling pre-allocation parameter configuration. 4. The method according to any one of claims 1-3, wherein the instructing the UE accessing the primary carrier to switch from the primary carrier to the standby carrier comprises: reducing the transmit power of the primary carrier, so that the UE switches from the primary carrier to the standby carrier when detecting a decrease in signal-to-noise ratio on the primary carrier; or, Sending a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the standby carrier according to the carrier switching instruction. 5. The method according to any one of claims 1-4, wherein the enabling of the main carrier and the backup carrier includes: activating the main carrier and the backup carrier, and both the main carrier and the backup carrier are in a working state; or, The main carrier and the backup carrier are enabled, and the main carrier is in a working state, and the backup carrier is in a redundant state, an energy-saving state, or a state to be activated. 6. The method according to claim 5, wherein before instructing the UE accessing the main carrier to switch from the main carrier to the standby carrier, the step comprises: When the main carrier is in the working state and the backup carrier is in the redundant state, the energy saving state or the state to be activated, restore the backup carrier to the working state. 7. The method according to any one of claims 1-6, characterized in that, after the UE that instructs to access the main carrier switches from the main carrier to the standby carrier, further comprising: judging whether the UE has completed carrier switching; If completed, then release the resources of the primary carrier, set the backup carrier as a new primary carrier, reselect a carrier resource from the available carrier resources as a new backup carrier, and perform resource processing on the new backup carrier. Configuring and enabling the new backup carrier. 8. A base station, characterized in that, comprising: The activation module is used to activate the main carrier and the backup carrier, the spectrum of the main carrier and the spectrum of the backup carrier are both white spectrum. A detection module, configured to detect the signal on the main carrier; An instructing module, configured to instruct a UE connected to the main carrier to switch from the main carrier to the backup carrier when the detection module detects broadcast interference on the main carrier. 9. The base station according to claim 8, wherein the base station further comprises: A determination module, configured to determine the frequency spectrum of the main carrier and the frequency spectrum of the backup carrier from available white spectrum before the activation module activates the main carrier and the backup carrier; The configuration module is configured to perform resource configuration on the main carrier and the backup carrier before the enabling module activates the main carrier and the backup carrier, wherein the air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent. 10. The base station according to claim 9, wherein the configuration module is used for at least one of the following configurations: Air interface bearer parameter configuration, carrier synchronization information configuration, radio access bearer E-RAB pre-establishment parameter configuration of the evolved universal terrestrial radio access network, resource scheduling pre-allocation parameter configuration. 11. The base station according to claims 8-10, wherein the indication module is specifically configured to: reduce the transmit power of the main carrier, so that the UE detects the signal on the main carrier switching from the main carrier to the backup carrier when the noise ratio is reduced; or, Sending a carrier switching instruction to the UE, so that the UE switches from the primary carrier to the standby carrier according to the carrier switching instruction. 12. The base station according to claims 8-11, wherein the activation module is specifically configured to: activate the main carrier and the backup carrier, and both the main carrier and the backup carrier are in a working state; or, The main carrier and the backup carrier are enabled, and the main carrier is in a working state, and the backup carrier is in a redundant state, an energy-saving state, or a state to be activated. 13. The base station according to claim 12, further comprising: A recovery module, configured to switch from the main carrier to the backup carrier when the main carrier is in the working state and the backup carrier is in the redundant state before the indication module instructs the UE connected to the main carrier to switch , the energy-saving state or the state to be activated, restore the standby carrier to the working state. 14. The base station according to claims 8-13, further comprising: A judging module, configured to judge whether the UE has completed carrier switching; A release module, configured to release resources of the primary carrier after the judging module judges that the UE completes carrier switching; A setting module, configured to set the backup carrier as a new primary carrier after the judging module judges that the UE completes carrier switching; The determining module is further configured to reselect a carrier resource from available carrier resources as a new backup carrier after the judging module judges that the UE completes carrier switching; The configuration module is further configured to configure resources for the new backup carrier; The enabling module is further configured to enable the new backup carrier. 15. A base station, comprising: a baseband processing unit and a first radio frequency processing unit and a second radio frequency processing unit connected to the baseband processing unit; The baseband processing unit is configured to enable a main carrier on the first radio frequency unit and use the main carrier to communicate with the user equipment UE, enable a backup carrier on the second radio frequency unit, and, when on the main carrier When radio and television interference is detected on the Internet, the UE that has accessed the main carrier is instructed to switch from the main carrier to the backup carrier. 16. The base station according to claim 15, wherein the baseband processing unit is specifically used for: Before enabling the main carrier on the first radio frequency unit and the standby carrier on the second radio frequency unit, determine the spectrum of the main carrier and the spectrum of the backup carrier from available white spectrum; Resource configuration is performed on the main carrier and the backup carrier, where air interface bearer parameters and synchronization information of the main carrier and the backup carrier are consistent. 17. The base station according to claim 15, wherein the baseband processing unit configures resources for the primary carrier and the backup carrier, including configuring at least one of the following: Air interface bearer parameter configuration, carrier synchronization information configuration, E-RAB wireless access bearer E-RAB pre-establishment parameter configuration, resource scheduling pre-allocation parameter configuration. 18. The base station according to any one of claims 15-17, wherein the baseband processing unit is specifically configured to: reduce the transmit power of the main carrier enabled on the first radio frequency processing unit, so that the The UE switches from the main carrier enabled on the first radio frequency processing unit to the backup carrier enabled on the second radio frequency processing unit when detecting that the signal-to-noise ratio on the main carrier decreases; or, Sending a carrier switching instruction to the UE through the first radio frequency processing unit, so that the UE switches from the main carrier enabled on the first radio frequency processing unit to enabled on the second radio frequency processing unit according to the carrier switching instruction of the backup carrier. 19. The base station according to any one of claims 15-18, characterized in that: Both the main carrier and the backup carrier are in working state; or, The primary carrier is in a working state, and the standby carrier is in a redundant state, an energy-saving state, or a state to be activated. 20. The base station according to claim 19, wherein the baseband processing unit is specifically configured to: when the main carrier is in a working state and the backup carrier is in a redundant state, an energy-saving state or a state to be activated , restore the backup carrier to the working state. 21. The base station according to any one of claims 15-20, wherein the baseband processing unit is further configured to: judging whether the UE has completed carrier switching; If completed, release the resources of the main carrier enabled on the first radio frequency processing unit, set the backup carrier as a new main carrier, reselect a carrier resource from the available carrier resources as a new backup carrier, and Perform resource configuration on the new standby carrier and activate the new standby carrier on the first radio frequency processing unit.

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