CN103702379B - Carrier switch method and device - Google Patents
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- CN103702379B CN103702379B CN201310746577.2A CN201310746577A CN103702379B CN 103702379 B CN103702379 B CN 103702379B CN 201310746577 A CN201310746577 A CN 201310746577A CN 103702379 B CN103702379 B CN 103702379B
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- 238000012545 processing Methods 0.000 claims description 60
- 239000000969 carrier Substances 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000013468 resource allocation Methods 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
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- 230000002452 interceptive effect Effects 0.000 description 5
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- 230000001149 cognitive effect Effects 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention provides a kind of carrier switch method and device, and this method includes：Enable main carrier and alternate carrier, the frequency spectrum of the frequency spectrum of the main carrier and the alternate carrier is white frequency spectrum, when detecting broadcasting and TV interference on the main carrier, the user equipment that instruction is linked into the main carrier is switched to the alternate carrier from the main carrier.The present invention by enabling main carrier and alternate carrier simultaneously, when detecting broadcasting and TV interference on the main carrier, the user equipment for indicating to be linked into the main carrier is switched to alternate carrier from main carrier, it ensure that and be smoothly switched on the carrier wave not interfered with when main carrier runs into broadcasting and TV interference, business continuance is protected.
Description
Technical Field
The present invention relates to a spectrum switching technology, and in particular, to a carrier switching method and apparatus for cognitive radio service.
Background
In recent years, along with broadcasting and TV signals are gradually digitalized, a large number of low-frequency sections are in an idle state, the frequency range is wide, the idle television broadcasting frequency range is called as a white spectrum field, and for Long Term Evolution (LTE) spectrum resources which are scarce in the industry, the white spectrum is a good frequency range, and the frequency range is easy to obtain, so that the access bandwidth is favorably and greatly improved, but the frequency range attribution in the white spectrum field is a broadcasting and TV system, and the system for deploying non-broadcasting and TV signals by the white spectrum must ensure that the broadcasting and TV signals are not affected.
The application of the white spectrum needs to use a Cognitive Radio (CR) technology, which can reliably sense the spectrum environment over a wide frequency band, detect the occurrence of a legitimate authorized user (primary user), and adaptively occupy the instant available local spectrum, and meanwhile, when Radio and television signal interference is encountered in the whole communication process, the original white spectrum band needs to be switched to other available carriers by adopting evasive means.
However, in the handover process, due to the searching, activating, configuring and other processes of the available carriers, the handover time is too long, and the problem of UE (User Equipment) disconnection frequently occurs, which interrupts the service.
Disclosure of Invention
The embodiment of the invention provides a carrier switching method and a carrier switching device, which solve the problem that when a main carrier needs to be switched due to radio and television interference, service is interrupted in the switching process.
In a first aspect, an embodiment of the present invention provides a carrier switching method, including:
starting a main carrier and a standby carrier, wherein the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier are both white frequency spectrums;
and when radio and television interference is detected on the main carrier, indicating User Equipment (UE) accessing to the main carrier to switch from the main carrier to the standby carrier.
In a first possible implementation manner of the first aspect, before the enabling the primary carrier and the backup carrier, the method further includes:
determining the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier from available white frequency spectrums;
and performing resource allocation on the main carrier and the standby carrier, wherein the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept 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:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
With reference to the first aspect, or any one of the first to the second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the instructing the UE accessing to the primary carrier to switch from the primary carrier to the backup carrier includes:
reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
With reference to the first aspect, or any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the enabling a primary carrier and a standby carrier includes:
starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states;
or,
and starting the main carrier and the standby carrier, wherein the main 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.
According to a fourth possible implementation form of the first aspect, in a fifth possible implementation form,
before the instructing the UE to switch from the primary carrier to the standby carrier, the method includes:
and when the main 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, restoring the standby carrier to the working state.
With reference to the first aspect or any one of the first to fifth possible implementation manners of the first aspect, in a sixth possible implementation manner of the first aspect, after the instructing the UE accessing the primary carrier to switch from the primary carrier to the standby carrier, the method further includes:
judging whether the UE completes carrier switching;
and if the standby carrier is finished, releasing the resources of the main carrier, setting the standby carrier as a new main carrier, reselecting a carrier resource from available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier.
In a second aspect, an embodiment of the present invention provides a base station, including:
the starting module is used for starting the main carrier and the standby carrier, and the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier are both white frequency spectrums.
The detection module is used for detecting the signal on the main carrier;
an indicating module, configured to indicate the UE to switch from the primary carrier to the standby carrier when the detecting module detects radio and television interference on the primary carrier;
in a first possible implementation manner of the second aspect, the base station further includes:
a determining module, configured to determine a spectrum of a primary carrier and a spectrum of a backup carrier from available white spectrums before an enabling module enables the primary carrier and the backup carrier;
the device comprises a configuration module and a control module, wherein the configuration module is used for carrying out resource configuration on a main carrier and a standby carrier before the starting module starts the main carrier and the standby carrier, and the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
In a second possible implementation manner, according to the first possible implementation manner of the second aspect, the configuration module is configured to at least one of the following configurations:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
With reference to the second aspect and any one of the first to second possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the indicating module is specifically configured to: reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
With reference to the second aspect and any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the enabling module is specifically configured to: starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states;
or,
and starting the main carrier and the standby carrier, wherein the main 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.
According to a fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the method further includes:
a restoring module, configured to restore the standby carrier to a working state when the main carrier is in the working state and the standby carrier is in a redundant state or an energy-saving state before the indicating module indicates the UE to switch from the main carrier to the standby carrier.
With reference to the second aspect and any one of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the method further includes:
the judging module is used for judging whether the UE completes carrier switching;
a release module, configured to release the resource of the primary carrier after the determination module determines that the UE completes carrier switching;
the setting module is used for setting the standby carrier as a new main carrier after the judging module judges that the UE completes the carrier switching;
the determining module is further configured to reselect a carrier resource from available carrier resources as a new standby carrier after the determining module determines that the UE completes carrier switching;
the configuration module is further configured to perform resource configuration on the new standby carrier;
the enabling module is further configured to enable the new standby carrier.
In a third aspect, an embodiment of the present invention provides a base station, including: the device comprises a baseband processing unit, a first radio frequency processing unit and a second radio frequency processing unit, wherein the first radio frequency processing unit and the second radio frequency processing unit are connected with the baseband processing unit;
the baseband processing unit is configured to enable a main carrier on the first radio frequency unit and communicate with a user equipment UE using the main carrier, enable a backup carrier on the second radio frequency unit, and instruct the UE to switch from the main carrier to the backup carrier when radio and television interference is detected on the main carrier.
In a first possible implementation manner of the third aspect, the baseband processing unit is specifically configured to:
before the main carrier is started on the first radio frequency unit and the standby carrier is started on the second radio frequency unit, determining the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier from available white frequency spectrums;
and performing resource allocation on the main carrier and the standby carrier, wherein the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
In a second possible implementation manner of the third aspect, the performing, by the baseband processing unit, resource configuration on the primary carrier and the standby carrier includes configuring at least one of:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
With reference to the third aspect and any one of the first to second possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the baseband processing unit is specifically configured to: reducing the transmission power of the primary carrier enabled on a first radio frequency processing unit to cause the UE to switch from the primary carrier enabled on the first radio frequency processing unit to the backup carrier enabled on a second radio frequency processing unit when detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE through the first radio frequency processing unit so that the UE is switched from the main carrier started on the first radio frequency processing unit to the standby carrier started on the second radio frequency processing unit according to the carrier switching instruction.
With reference to the third aspect and any one of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the primary carrier and the standby carrier are both in an operating state;
or,
the main carrier is in a working state, and the standby carrier is in any one of the following three states:
a redundant state, a power saving state and a state to be activated.
With reference to any one 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: and when the main 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, restoring the standby carrier to the working state.
With reference to the third aspect and 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 completes carrier switching;
if the standby carrier is finished, releasing the resources of the main carrier started on the first radio frequency processing unit, setting the standby carrier as a new main carrier, reselecting a carrier resource from available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier on the first radio frequency processing unit.
According to the carrier switching method and device provided by the embodiment of the invention, the main carrier and the standby carrier are simultaneously started, and when broadcasting interference is detected on the main carrier currently used by User Equipment (UE), the UE is instructed to switch from the main carrier to the standby carrier, so that the UE is smoothly switched to the carrier without interference when the main carrier encounters the broadcasting interference, and the service continuity is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a carrier switching method according to a first embodiment of the present invention;
fig. 2 is an interactive signaling flowchart of a second embodiment of a carrier switching method according to the present invention;
fig. 3 is an interactive signaling flowchart of a third embodiment of a carrier switching method according to the present invention;
fig. 4 is a schematic structural diagram of a base station according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second base station according to the embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
Fig. 1 is a flowchart illustrating a carrier switching method according to a first embodiment of the present invention. The implementation subject of this embodiment is a Long Term Evolution (LTE) base station configured with a Spectrum Sensor Engine (SSE), and the base station may be implemented by software and/or hardware. As shown in fig. 1, the method of the present embodiment includes:
step 101, starting a main carrier and a standby carrier, wherein the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier are both white frequency spectrums.
Wherein before the activating the primary carrier and the backup carrier, the method further comprises: determining the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier from available white frequency spectrums; and performing resource allocation on the main carrier and the standby carrier, wherein the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
The resource configuration of the primary carrier and the standby carrier may include: at least one of air interface bearing parameter configuration, carrier synchronization information configuration, evolved universal terrestrial radio access network radio access bearing E-RAB pre-establishment parameter configuration and resource scheduling pre-allocation parameter configuration.
Specifically, the enabling of the primary carrier and the standby carrier includes: starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states; or starting the main carrier and the standby carrier, wherein the main 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.
And 102, when radio and television interference is detected on the main carrier, indicating User Equipment (UE) accessed to the main carrier to switch from the main carrier to the standby carrier.
Wherein the instructing the UE accessing to the primary carrier to switch from the primary carrier to the standby carrier comprises: reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier; or sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
Wherein, before the instructing the UE accessing to the primary carrier to switch from the primary carrier to the standby carrier, the method includes: and when the main 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, restoring the standby carrier to the working state.
Wherein, step 102 is followed by: judging whether the UE completes carrier switching; and if the standby carrier is finished, releasing the resources of the main carrier, setting the standby carrier as a new main carrier, reselecting a carrier resource from available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier.
In this embodiment, when an SSE configured by a base station detects a signal with a bandwidth of 8MHz on a main carrier, it indicates that radio and television signal interference exists on the main carrier, and at this time, when both the main carrier and the standby carrier are in a working state, the base station instructs a UE to switch from the main carrier to the standby carrier by reducing transmission power and/or sending a switching instruction; when the main carrier is in a working state and the standby carrier is in a redundant state or an energy-saving state, the base station needs to restore the standby carrier in the redundant state or the energy-saving state to normal transmission power to enable the standby carrier to be in the working state.
In the carrier switching method provided by the embodiment of the invention, the main carrier and the standby carrier are simultaneously started, and when broadcasting interference is detected on the main carrier currently used by User Equipment (UE), the UE is instructed to switch from the main carrier to the standby carrier, so that the main carrier is smoothly switched to the carrier without interference when encountering the broadcasting interference, and the service continuity is ensured.
Fig. 2 is an interactive signaling flowchart of a second embodiment of the carrier switching method of the present invention, and as shown in fig. 2, the method of this embodiment is combined with the interactive embodiment corresponding to the above embodiment. The specific method comprises the following steps:
step 201, the base station starts the active/standby carrier.
In this embodiment, before a base station activates an active/standby carrier, the base station first determines a frequency spectrum of the active carrier and a frequency spectrum of the standby carrier from available white frequency spectrums, and performs resource configuration on the active carrier and the standby carrier, where air interface bearer parameters and synchronization information of the active carrier and the standby carrier are consistent. The specific resource configuration may include air interface bearer parameter configuration, carrier synchronization information configuration, and Radio Access bearer (E-UTRAN Radio Access bearer, E-RAB) pre-established parameter configuration or resource scheduling pre-allocated parameter configuration of an Evolved universal terrestrial Radio Access Network (E-UTRAN), where the pre-allocated resource configuration of the standby carrier may improve the switching speed during carrier switching.
In this embodiment, the main carrier and the standby carrier are enabled, and both the main carrier and the standby carrier may be in a working state, and operate according to normal transmission power, and when the main carrier and the standby carrier are in the working state, both the main carrier and the standby carrier may access the UE; or starting the main carrier and the standby carrier, wherein the main carrier is in a working state, the main carrier is accessed with the UE, the standby carrier is in any one of a redundancy state, an energy-saving state or a state to be activated, and the standby carrier is in the redundancy state, the energy-saving state or the state to be activated, the standby carrier is not accessed with the UE, wherein when the standby carrier is in the redundancy state, the transmitting power of the standby carrier can be in a normal transmitting power or a low-power state, when the standby carrier is in the energy-saving state, the transmitting power of the standby carrier is lower than the normal transmitting power, and when the standby carrier is in the state to be activated, the transmitting 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 a carrier that the UE should access currently.
Step 204, the base station sends a carrier access response to the UE.
In this embodiment, a base station sends a carrier access response to a UE according to a carrier access request, where the carrier access response includes carrier information that the base station determines that the UE should currently access, where when both active and standby carriers enabled by the base station can access the UE, the base station determines that the carrier that the UE should currently access is a primary carrier, or the base station determines that the carrier that the UE should currently access is a standby carrier, and when the base station determines that the carrier that the UE should currently access is a primary carrier, the carrier access response also includes information of the standby carrier, correspondingly, when the base station determines that the carrier that the UE should currently access is a standby carrier, the carrier access response also includes information of the primary carrier, and for the UE accessing the standby carrier, the standby carrier of the UE is the primary carrier; when only the main carrier of the main and standby carriers enabled by the base station can be accessed to the UE, the base station determines that the carrier which the UE should be accessed to currently can only be the main carrier, and at the moment, the carrier access response also comprises the information of the standby carrier except the carrier information which the UR determined by the base station should be accessed to currently, namely the main carrier information.
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 information of the spare carrier. In this embodiment, the carrier accessed by the UE may be a primary carrier or a standby carrier.
Step 206, the SSE reports interference to an Operation Maintenance (OM) system.
In this embodiment, when the SSE detects radio and television signal interference on the host carrier, it reports the interference to an Operation Maintenance (OM) system.
Step 207, the OM system sends a switching instruction to the base station according to the signal interference message.
And step 208, the base station receives the switching instruction and reduces the transmitting power of the main carrier.
In this embodiment, according to the received switching instruction, when the enabled active/standby carriers are both in a working state, that is, the active/standby carriers are both accessed to the UE, at this time, the base station reduces the transmission power of the active carrier for instructing the UE accessed to the active carrier to start switching; when a base station starts a main standby carrier, the main carrier is in a working state, the main carrier is accessed with UE, the standby carrier is in a redundant state, an energy-saving state or a state to be activated, and the standby carrier is not accessed with the UE, at the moment, for the standby carrier in a low-power redundant state and an energy-saving state, the base station restores the standby carrier to the working state, namely, the standby carrier is in normal transmitting power and can be accessed with the UE, for the standby carrier in the state to be activated, the base station activates the carrier to be activated and restores the standby carrier to the working state, then the base station reduces the transmitting power of the main carrier, and the UE accessed with the main carrier is indicated to start switching operation.
Step 209 is to search for a backup carrier by detecting a decrease in Signal to Interference plus noise ratio (SINR).
In this embodiment, the UE accessing the host carrier detects that the SINR on the host carrier is decreased, when the SINR on the host carrier is smaller than the preset SINR threshold, the UE searches for the spare carrier according to the spare carrier information stored in step 205, and performs step 2010.
Step 2010, the UE sends a switching request to the base station.
Step 2011, the base station sends a handover request response to the UE.
In this embodiment, the base station transmits a response to the UE to allow handover according to the handover request.
Step 2012, the UE switches from the primary carrier to the backup carrier.
In this embodiment, the UE switches from the primary carrier to the backup carrier according to the handover request response.
Step 2013, the UE sends a switching completion message to the base station.
Step 2014, the base station releases the main carrier resource and takes the standby carrier as a new main carrier.
In this embodiment, when the base station receives a handover completion message sent by the UE, the base station can know that the UE has handed over to the standby carrier, and at this time, the base station releases the main carrier resource, then closes the main carrier, and sets the standby carrier as a new main carrier.
Step 2015, the base station sends a message of switching completion to the OM system.
In this embodiment, after releasing the main carrier resource, the base station sends a handover completion message to the OM system.
Step 2016, the base station configures the new standby carrier and enables the new standby carrier.
In this embodiment, after the base station completes the carrier switching, a carrier is reselected from available carrier resources as a new standby carrier, and the new standby carrier is configured, and after the configuration is completed, the new standby carrier is enabled, and the new standby carrier may be in a working state, a redundant state, an energy saving state, or a state to be activated.
In this embodiment, when the UE detects that the SNR of the main carrier is reduced, the UE searches for a backup carrier that is activated by the base station, where the backup carrier is activated while the base station activates the main carrier, the activated backup carrier is in a working state, a redundant state, or an energy saving state, and relevant parameters of the backup carrier are configured in advance.
Fig. 3 is an interactive signaling flowchart of a third embodiment of the carrier switching method of the present invention, and as shown in fig. 3, the specific method includes:
step 301-307: as with steps 201 to 207 of the second embodiment, please refer to the detailed 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 carrier switching, and restores the standby carrier in the low power redundancy state and the energy saving state to the working state, that is, at the normal transmission power, the base station can access the UE. For the standby carrier in the active state, when the base station receives the handover command, 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, where the handover instruction includes information of the spare carrier frequency point to be handed over.
Step 3010, the UE switches from the primary carrier to the backup carrier;
in this embodiment, the UE switches from the primary carrier to the backup 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 in embodiment two, and reference may be made to embodiment two, and this embodiment will not be discussed again.
In this embodiment, when the UE receives a switching instruction, the UE switches according to the switching instruction, where the standby carrier is activated while the base station activates the main carrier, the activated standby carrier is in a working state, a redundant state, or an energy-saving state, and relevant parameters of the standby carrier are configured in advance, so that the UE can switch quickly.
Fig. 4 is a schematic structural diagram of a base station according to a first embodiment of the present invention. As shown in fig. 4, the base station 40 provided in the present embodiment includes: an enabling module 401, a detecting module 402 and an indicating module 403.
The enabling module 401 is configured to enable a main carrier and a backup carrier, where a frequency spectrum of the main carrier and a frequency spectrum of the backup carrier are both white frequency spectrums.
A detecting module 402, configured to detect a signal on a main carrier currently used by a UE;
an indicating module 403, configured to instruct a UE accessing to the primary carrier to switch from the primary carrier to the backup carrier when the detecting module 402 detects radio and television interference on the primary carrier.
The base station provided in this embodiment may be configured to execute the technical solution of the first method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 5 is a schematic structural diagram of a base station according to a second embodiment of the present invention. The base station 40 provided in this embodiment further includes, on the basis of the embodiment in fig. 4:
a determining module 404, configured to determine a spectrum of the primary carrier and a spectrum of the backup carrier from available white spectrums before the enabling module enables the primary carrier and the backup carrier;
a configuration module 405, configured to perform resource configuration on a main carrier and a standby carrier before a start module starts the main carrier and the standby carrier, where empty bearer parameters and synchronization information of the main carrier and the standby carrier are consistent.
The configuration module 405 is specifically configured to at least one of the following configurations: air interface bearing parameter configuration, carrier synchronization information configuration, radio access bearing E-RAB pre-establishment parameter configuration and resource scheduling pre-allocation parameter configuration.
Optionally, the indicating module 403 is specifically configured to: reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
Optionally, the enabling module 401 is specifically configured to: starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states;
or,
the main carrier and the standby carrier are started, the main carrier is in a working state, and the standby carrier is any one of the following three types:
a redundant state, a power saving state and a state to be activated.
Optionally, the base station 40 further includes:
a recovery module, configured to recover, before the indication module indicates that the UE accessing the main carrier is switched from the main carrier to the standby carrier, the standby carrier to a working state when the main carrier is in the working state and the standby carrier is in a redundant state, an energy saving state, or a state to be activated.
Optionally, the base station 40 further includes:
a determining module 407, configured to determine whether the UE completes carrier switching.
A releasing module 408, configured to release the resource of the primary carrier after the determining module determines that the UE completes carrier switching.
A setting module 409, configured to set the standby carrier as a new primary carrier after the determining module determines 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 configuring module 405 is further configured to perform resource configuration on the new standby carrier.
The enabling module 401 is further configured to enable the new standby carrier.
The base station provided in this embodiment may be configured to execute the technical solution of the first method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of a base station according to a third embodiment of the present invention. The base station 50 provided in this embodiment includes:
a baseband processing unit 501, and a first rf processing unit 502 and a second rf processing unit 503 connected to the baseband processing unit 501.
The baseband processing unit 501 is configured to enable a main carrier on the first radio frequency unit 502 and communicate with a user equipment UE using the main carrier, enable a backup carrier on the second radio frequency unit 503, and instruct a UE accessing the main carrier to switch from the main carrier to the backup carrier when radio and television interference is detected on the main carrier.
The base station provided in this embodiment may be configured to execute the technical solution of the first method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
On the basis of the foregoing embodiment, optionally, the baseband processing unit 501 is specifically configured to:
before a main carrier is enabled on a first radio frequency unit 502 and a spare carrier is enabled on a second radio frequency unit 503, determining a spectrum of the main carrier and a spectrum of the spare carrier from available white spectrums, wherein the main carrier and the spare carrier are both in a working state;
or,
the main 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 allocation 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 standby carrier, including configuring at least one of the following:
air interface bearing parameter configuration, carrier synchronization information configuration, radio access bearing E-RAB pre-establishment parameter configuration and resource scheduling pre-allocation parameter configuration.
Optionally, the baseband processing unit 501 is specifically configured to: reducing the transmission power of the primary carrier enabled on a first radio frequency processing unit to cause the UE to switch from the primary carrier enabled on the first radio frequency processing unit to the backup carrier enabled on a second radio frequency processing unit when detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE through the first radio frequency processing unit so that the UE is switched from the main carrier started on the first radio frequency processing unit to the standby carrier started on the second radio frequency processing unit according to the carrier switching instruction.
Optionally, both the primary carrier and the standby carrier are in a working state;
or,
the main carrier is in a working state, and the standby carrier is in any one of the following three states:
a redundant state, a power saving state and a state to be activated.
Optionally, the baseband processing unit 501 is specifically configured to: and when the main 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, restoring the standby carrier to the working state.
Optionally, the baseband processing unit 501 is specifically configured to: judging whether the UE completes carrier switching;
if the processing is finished, releasing the resources of the main carrier wave started on the first radio frequency processing unit, and setting the standby carrier wave as a new main carrier wave;
and reselecting a carrier resource from the available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier on the first radio frequency processing unit.
In this embodiment, the base station 50 further includes:
a data transceiver 500 and an antenna 504, where the data transceiver is used to interact UE data with a network side of the LTE system, and the antenna 504 is used to send and receive data on the active and standby carriers.
The base station provided in this embodiment may be configured to execute the technical solution of the first method embodiment shown in fig. 1, and the implementation principle and the technical effect are similar, which are not described herein again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. A method for switching carriers, comprising:
starting a main carrier and a standby carrier, wherein the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier are both white frequency spectrums;
when radio and television interference is detected on the main carrier, indicating User Equipment (UE) accessed to the main carrier to switch from the main carrier to the standby carrier;
wherein the enabling of the primary carrier and the backup carrier comprises:
starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states;
or,
starting the main carrier and the standby carrier, wherein the main 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;
before the activating the primary carrier and the standby carrier, the method further includes:
determining the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier from available white frequency spectrums;
and performing resource allocation on the main carrier and the standby carrier, wherein the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
2. The method of claim 1, wherein the resource configuration comprises at least one of the following configurations:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
3. The method of claim 1 or 2, wherein the instructing the UE accessing the primary carrier to switch from the primary carrier to the backup carrier comprises:
reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
4. The method of claim 1 or 2, wherein prior to the indicating the UE accessing the primary carrier to switch from the primary carrier to the backup carrier, the method comprises:
and when the main 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, restoring the standby carrier to the working state.
5. The method of claim 1 or 2, wherein after the indicating the UE accessing the primary carrier switches from the primary carrier to the backup carrier, further comprising:
judging whether the UE completes carrier switching;
and if the standby carrier is finished, releasing the resources of the main carrier, setting the standby carrier as a new main carrier, reselecting a carrier resource from available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier.
6. A base station, comprising:
the system comprises a starting module, a judging module and a judging module, wherein the starting module is used for starting a main carrier and a standby carrier, and the frequency spectrums of the main carrier and the standby carrier are white frequency spectrums;
the detection module is used for detecting the signal on the main carrier;
the indication module is used for indicating the UE accessed to the main carrier to switch from the main carrier to the standby carrier when the detection module detects broadcast and television interference on the main carrier;
the enabling module is specifically configured to: starting the main carrier and the standby carrier, wherein the main carrier and the standby carrier are both in working states;
or,
starting the main carrier and the standby carrier, wherein the main 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;
the base station further comprises:
a determining module, configured to determine a spectrum of a primary carrier and a spectrum of a backup carrier from available white spectrums before an enabling module enables the primary carrier and the backup carrier;
the device comprises a configuration module and a control module, wherein the configuration module is used for carrying out resource configuration on a main carrier and a standby carrier before the starting module starts the main carrier and the standby carrier, and the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
7. The base station of claim 6, wherein the configuration module is configured to at least one of:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
8. The base station of claim 6 or 7, wherein the indication module is specifically configured to: reducing the transmit power of the primary carrier to cause the UE to switch from the primary carrier to the backup carrier upon detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE so that the UE is switched from the main carrier to the standby carrier according to the carrier switching instruction.
9. The base station of claim 6 or 7, further comprising:
a recovery module, configured to recover, before the indication module indicates that the UE accessing the main carrier is switched from the main carrier to the standby carrier, the standby carrier to a working state when the main carrier is in the working state and the standby carrier is in a redundant state, an energy saving state, or a state to be activated.
10. The base station according to claim 6 or 7, characterized in that the base station further comprises:
the judging module is used for judging whether the UE completes carrier switching;
a release module, configured to release the resource of the primary carrier after the determination module determines that the UE completes carrier switching;
the setting module is used for setting the standby carrier as a new main carrier after the judging module judges that the UE completes the carrier switching;
the determining module is further configured to reselect a carrier resource from available carrier resources as a new standby carrier after the determining module determines that the UE completes carrier switching;
the configuration module is further configured to perform resource configuration on the new standby carrier;
the enabling module is further configured to enable the new standby carrier.
11. A base station, comprising: the device comprises a baseband processing unit, a first radio frequency processing unit and a second radio frequency processing unit, wherein the first radio frequency processing unit and the second radio frequency processing unit are connected with the baseband processing unit;
the baseband processing unit is configured to enable a main carrier on the first radio frequency unit and communicate with a User Equipment (UE) using the main carrier, enable a standby carrier on the second radio frequency unit, and instruct, when radio and television interference is detected on the main carrier, the UE accessing the main carrier to switch from the main carrier to the standby carrier;
the main carrier and the standby carrier are both in working states;
or,
the main 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;
the baseband processing unit is specifically configured to:
before the main carrier is started on the first radio frequency unit and the standby carrier is started on the second radio frequency unit, determining the frequency spectrum of the main carrier and the frequency spectrum of the standby carrier from available white frequency spectrums;
and performing resource allocation on the main carrier and the standby carrier, wherein the air interface bearing parameters and the synchronization information of the main carrier and the standby carrier are kept consistent.
12. The base station of claim 11, wherein the baseband processing unit performs resource configuration on the primary carrier and the backup carrier, and the resource configuration includes configuring at least one of:
the method comprises the steps of air interface bearing parameter configuration, carrier synchronization information configuration, advanced establishment parameter configuration of a radio access bearer E-RAB of an evolved universal terrestrial radio access network, and resource scheduling pre-allocation parameter configuration.
13. The base station according to claim 11 or 12, wherein the baseband processing unit is specifically configured to: reducing the transmission power of the primary carrier enabled on a first radio frequency processing unit to cause the UE to switch from the primary carrier enabled on the first radio frequency processing unit to the backup carrier enabled on a second radio frequency processing unit when detecting a reduction in signal-to-noise ratio on the primary carrier;
or,
and sending a carrier switching instruction to the UE through the first radio frequency processing unit so that the UE is switched from the main carrier started on the first radio frequency processing unit to the standby carrier started on the second radio frequency processing unit according to the carrier switching instruction.
14. The base station according to claim 11 or 12, wherein the baseband processing unit is specifically configured to: and when the main 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, restoring the standby carrier to the working state.
15. The base station of claim 11 or 12, wherein the baseband processing unit is further configured to:
judging whether the UE completes carrier switching;
if the standby carrier is finished, releasing the resources of the main carrier started on the first radio frequency processing unit, setting the standby carrier as a new main carrier, reselecting a carrier resource from available carrier resources as a new standby carrier, performing resource configuration on the new standby carrier, and starting the new standby carrier on the first radio frequency processing unit.
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| US9615269B2 (en) * | 2014-10-02 | 2017-04-04 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
| CN107710822B (en) * | 2015-12-15 | 2022-03-15 | Oppo广东移动通信有限公司 | Carrier hopping method, terminal and base station |
| CN105722099B (en) * | 2016-04-08 | 2019-04-02 | 江苏中科羿链通信技术有限公司 | The anti-interference cut-in method of wireless chain-shaped network |
| CN109152016B (en) | 2017-06-16 | 2022-04-05 | 华为技术有限公司 | Communication method and device |
| CN109889740A (en) * | 2019-03-26 | 2019-06-14 | 深圳市海拓达电子技术有限公司 | A kind of novel intelligent RF switch |
| WO2021035595A1 (en) * | 2019-08-29 | 2021-03-04 | Qualcomm Incorporated | Configuring guard intervals for multiple uplink carriers |
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