CN102958001B - Method for controlling network congestion and device - Google Patents
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- CN102958001B CN102958001B CN201110246723.6A CN201110246723A CN102958001B CN 102958001 B CN102958001 B CN 102958001B CN 201110246723 A CN201110246723 A CN 201110246723A CN 102958001 B CN102958001 B CN 102958001B
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Abstract
The invention discloses a kind of method for controlling network congestion, including user equipment (UE) to receive the load control information for the multimedia broadcast-multicast service MBMS that base station is sent；The UE is according to the load control information, it is determined that in the cell reselection priority of the UE, if the frequency for using the MBMS is as limit priority.The invention also discloses communicator.According to scheme provided by the invention, frequency that a large amount of UE use the MBMS is can be avoided as limit priority, and causes a large amount of UE within time of concentration to initiate network congestion caused by calling.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a method and an apparatus for controlling network congestion.
Background
In a Multimedia Broadcast Multicast Service (MBMS), a base station may simultaneously transmit the same multimedia data to a User Equipment (UE) in a broadcast or multicast method. The MBMS may be transmitted through a multimedia broadcast multicast service single frequency network (MBSFN), that is, multimedia data is synchronously transmitted in multiple cells at the same time and at the same frequency.
In the prior art, a UE receiving an MBMS or interested in the MBMS may set a frequency of providing the MBMS to a cell reselection highest priority, that is, the UE has a highest priority in cell reselection for providing the MBMS.
According to the method provided by the prior art, when a large number of UEs set the frequency for providing the MBMS to the highest priority for cell reselection, a large number of UEs may reside in a network supporting the frequency of the MBMS, which may easily cause network congestion.
Disclosure of Invention
The invention provides a method, a device and a system for controlling network congestion, which can support the network congestion of an MBMS network.
One aspect of the present invention provides a method for controlling network congestion, including: UE receives the load control information of MBMS sent by a base station; and the UE determines whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the load control information.
Another aspect of the present invention provides a method for controlling network congestion, including: UE receives the load control information of MBMS sent by a base station; and the UE determines whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS according to the load control information.
In another aspect, the present invention provides a method for controlling network congestion, including: the base station determines the load control information of the MBMS; the load control information is used for a User Equipment (UE) to determine whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE, or the load control information is used for the UE to determine whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS; and the base station sends the load control information to the UE. .
Yet another aspect of the present invention provides a UE, including: a receiver for receiving the load control information of the MBMS transmitted by the base station; a processor, configured to determine whether to use the frequency used by the MBMS as a highest priority in a cell reselection priority of the UE according to the load control information received by the receiver.
Yet another aspect of the present invention provides a UE, including: a UE, comprising: a receiver for receiving the load control information of the MBMS transmitted by the base station; and the processor determines whether to migrate out of the frequency used by the MBMS or determine whether to migrate to the frequency used by the MBMS according to the load control information.
Yet another aspect of the present invention provides a base station, including: a determining unit, configured to determine load control information of an MBMS, where the load control information is used by a user equipment UE to determine whether to use a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE, or the load control information is used by the UE to determine whether to migrate out of a frequency used by the MBMS or determine whether to migrate to a frequency used by the MBMS; and a transmitting unit configured to transmit the load control information to the UE.
Still another aspect of the embodiments of the present invention further provides a communication system, which includes the above-mentioned base station or UE.
According to the technical scheme provided by the invention, the network congestion caused by the fact that a large number of UEs initiate calls in a centralized time can be avoided because a large number of UEs all use the frequency used by the MBMS as the highest priority or all migrate to the frequency used by the MBMS.
Drawings
Fig. 1 is a schematic flowchart illustrating a network congestion control method according to an embodiment of the present invention;
fig. 1B is a schematic flowchart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 6 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 7 is a schematic flow chart illustrating another network congestion control method according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 8B is a schematic structural diagram of another UE according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another base station according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution and the object of the present invention more clear, the following description is further made with reference to the specific embodiments and the accompanying drawings.
The technical scheme provided by the embodiment of the invention can be applied to various wireless communication networks, and the terms of the network and the system can be replaced mutually. In the embodiment of the present invention, a Base Station (BS) may be a station that communicates with a User Equipment (UE) or other communication stations, such as a relay station, and the base station may provide communication coverage in a specific physical area. The base station may provide communication coverage for a macrocell, a picocell (pico cell), a femtocell (femtocell), and/or other types of cells. A base station may support one or more cells.
In the embodiments of the present invention, the UEs may be distributed throughout the wireless network, and each UE may be static or mobile. A UE may be referred to as a terminal (terminal), a mobile station (mobile station), a subscriber unit (subscriber unit), a station (station), etc. The UE may be a cellular phone (cellular phone), a Personal Digital Assistant (PDA), a wireless modem (modem), a wireless communication device, a handheld device (hand-held), a laptop computer (laptop computer), a cordless phone (cordless phone), a Wireless Local Loop (WLL) station, or the like. The UE may communicate with a macro base station, pico base station, femto base station, or the like.
In the embodiment of the invention, the cell supported by the base station can provide the MBMS at a specific frequency, and one or more idle-state UEs can reside in the cell providing the MBMS. When setting the priority of cell reselection, a UE receiving an MBMS or interested in an MBMS service may set a frequency used by the MBMS to be the highest priority of cell reselection, that is, the UE considers the frequency first when performing cell reselection. This may result in a frequency camping equivalent of UEs used by MBMS, which may cause network congestion when the UEs collectively originate calls over a period of time.
As shown in fig. 1, a method for controlling network congestion provided in an embodiment of the present invention includes:
step 101: the UE receives the load control information of the MBMS.
Step 102: and the UE determines whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the load control information.
In this embodiment of the present invention, if the UE determines, according to the load control information, that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UE, the UE may ignore that the frequency used by the MBMS is the highest priority, that is, the frequency used by the MBMS is set to be the highest priority, but the UE ignores the setting, for example, the UE may set the frequency used by the MBMS to be the priority before the highest priority as the highest priority; or, setting the frequency of MBMS use to the lowest priority; or, neglecting the priority configured by the special priority, and using the priority in the current system message; alternatively, a random selection of available frequencies or systems is made ignoring all set priorities.
As shown in fig. 1B, an embodiment of the present invention further provides a method for controlling network congestion, including:
step 101B: and the UE receives the load control information of the multimedia broadcast multicast service MBMS sent by the base station.
Step 102B: and the UE determines whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS according to the load control information.
As shown in fig. 2, another network congestion control method provided in the embodiment of the present invention includes:
step 201: a base station determines load control information of a Multimedia Broadcast Multicast Service (MBMS); the load control information is used for a User Equipment (UE) to determine whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE, or the load control information is used for the UE to determine whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS.
The base station may detect a network condition and set the load control information of the MBMS according to the network condition.
Step 202: and the base station sends the load control information to the UE.
The base station may also directly transmit the network status to an adjacent base station, and the adjacent base station determines the MBMS load control information of the base station according to the network status.
As shown in fig. 3, an embodiment of the present invention further provides a network congestion control method, including:
step 301: the method comprises the steps that a base station receives load control information of an MBMS sent by an adjacent base station or receives a network condition sent by the adjacent base station, wherein the load control information is used for a user equipment UE to determine whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priority of the UE, or the load control information is used for the UE to determine whether the frequency used by the MBMS is migrated or not, or determine whether the frequency used by the MBMS is migrated or not.
And the cell under the adjacent base station provides the MBMS service at a specific frequency. The load control information may be that the neighboring base station is set according to a network condition. If the base station receives the network condition sent by the neighboring base station, the base station may derive the load control information of the neighboring base station according to the network condition.
Step 302: and the base station sends the received load control information or the load control information of the adjacent base station obtained by the base station to the UE covered by the base station.
In the embodiment of the present invention, the MBMS load control information may be used to perform load control on UEs receiving the MBMS or UEs interested in the MBMS. The UE receiving the MBMS or the UE interested in the MBMS may determine whether to take a frequency used by the MBMS as a highest priority among cell reselection priorities of the UEs according to the load control information of the MBMS.
If the frequency used by the MBMS is not taken as the highest priority in the cell reselection priorities of the UEs, when the UE performs cell reselection, if the UE already resides in the frequency used by the MBMS, the UE may migrate the frequency used by the MBMS, that is, may reselect to a cell having a frequency different from the frequency used by the MBMS through cell reselection or in another Radio Access Technology (RAT) system, so as to avoid causing network congestion to the cell providing the MBMS. If the UE does not reside in the frequency used by the MBMS when the UE is performing cell reselection, the UE may not migrate to the frequency used by the MBMS. For example, if the UE under the coverage of the neighboring base station receives the load control information of the MBMS, the UE interested in the MBMS may not use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs according to the load control information of the MBMS, and when the UE performs cell reselection, the UE does not migrate to the frequency used by the MBMS, so that network congestion of the cell using the frequency may be avoided. If the UE determines that the frequency used by the MBMS can be used as the highest priority in the cell reselection priorities of the UE according to the load control information, when the UE performs cell reselection, the UE migrates to the frequency used by the MBMS, and thus, the UE does not cause congestion to a network of a cell providing the MBMS.
As shown in fig. 4, an embodiment of the present invention provides a method for controlling network congestion, where the method may include:
step 401: the base station transmits the load control information of the MBMS.
In this embodiment, the cell supported by the base station may provide MBMS at a specific frequency. The base station may transmit the load control information of the MBMS, and a UE camping in a coverage area of a cell supported by the base station may receive the load control information of the MBMS.
In this embodiment, the MBMS load control information may be a MBMS load control factor, and the MBMS load control factor may be used to control a network load caused by a UE receiving the MBMS or a UE interested in the MBMS. The MBMS load control factor may be a value greater than or equal to 0 and less than or equal to 1, and the value may also be embodied in a percentage form. For example, the load control factor of the MBMS is 0.6 or 60%, and the specific value of the load control factor may be determined by the base station according to the network condition.
Or, the load control information of the MBMS may be a load control index of the MBMS, that is, the base station may indicate the load control factor through the load control index of the MBMS. The UE and the base station can know the load control factor corresponding to the load control index of the MBMS, the base station can directly send the load control index, and the UE can determine the corresponding load control factor after receiving the load control index of the MBMS sent by the base station.
Alternatively, the load control information of the MBMS may be an indicator, where the indicator may be used to indicate whether a UE uses a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE. For example, the indicator may occupy 1 bit, and if the bit is set to "1", it indicates that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UEs, and if the bit is set to "0", it indicates that the frequency used by the MBMS is the highest priority in the cell reselection priorities of the UEs. Alternatively, if a bit is set to "0", it indicates that the frequency used by the MBMS is not the highest priority among the cell reselection priorities of the UEs, and if the bit is set to "1", it indicates that the frequency used by the MBMS is the highest priority among the cell reselection priorities of the UEs.
In the embodiment of the present invention, the base station may send the load control information of the MBMS when a network condition changes or the network condition reaches a preset threshold. For example, the base station may detect a network condition such as a radio resource congestion condition, or a radio link condition, or a transport network congestion condition, or transport network quality, or a network load condition, and if a change of the network condition reaches a preset threshold, or the network condition reaches a preset threshold, for example, the network load reaches the preset threshold, or the radio link quality is lower than the preset threshold, the base station sends the load control information of the MBMS. Or, if the base station receives a network congestion indication sent by a core network, the base station may also send the load control information of the MBMS. In the embodiment of the present invention, the base station may also periodically send the load control information of the MBMS.
In this embodiment of the present invention, the MBMS load control information may be determined by the base station according to the detected network condition.
In the embodiment of the present invention, the base station may send the load control information of the MBMS in system information, or may send the load control information of the MBMS, for example, an MBMS scheduling information (MBMS scheduling information) message, through a Radio Resource Control (RRC) message.
Step 402: and the UE determines whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the received load control information of the MBMS.
The UE residing in the coverage area of the cell supported by the base station may receive the load control information of the MBMS, and after receiving the MBMS load control information sent by the base station, the UE that is receiving the MBMS or is interested in the MBMS service may determine, according to the received MBMS load control information, whether to use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs.
For example, if the MBMS load control information received by the UE is a load control factor of an MBMS, the UE may determine, by using a derived random number, whether to take a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE. If the MBMS load control information received by the UE is a load control index of the MBMS, the UE may first obtain a corresponding load control factor through the load control index of the MBMS, and then determine whether to use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE through the derived random number. For example, if the load control factor sent by the base station is 0.1, the UE may derive a random number between 0 and 1, if the derived random number is greater than 0.1, the UE determines that, in the cell reselection priorities of the UE, the frequency used by the MBMS may be used as the highest priority, and if the derived random number is less than or equal to 0.1, the UE needs to determine that, in the cell reselection priorities of the UE, the frequency used by the MBMS is not used as the highest priority. Or, if the MBMS load control information received by the UE is an indicator, the UE may determine, according to a rule known to the base station, whether to take a frequency used by the MBMS as a highest priority among cell reselection priorities of the UE.
In this embodiment of the present invention, after receiving the load control information, the UE may immediately determine whether the frequency used by the MBMS is the highest priority in the cell reselection priorities of the UE, or may determine whether the frequency used by the MBMS is the highest priority in the cell reselection priorities of the UE when the UE initiates a unicast service.
In the embodiment of the present invention, if the UE determines that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UE according to the load control information, the UE may ignore the frequency used by the MBMS as the highest priority; or, setting the frequency of MBMS use to the lowest priority; or, neglecting the setting of the special priority, using the priority in the current system message; alternatively, ignoring all priority settings, a random selection of available frequencies or systems is made.
If the UE determines that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UE according to the load control information, when the UE needs to perform cell reselection, the UE may migrate the frequency used by the MBMS, and the UE may migrate to a cell of another frequency different from the specific frequency or another RAT system. When the UE migrates through cell reselection, the frequency used by the MBMS can be ignored as the highest priority; or, setting the frequency of MBMS use to the lowest priority; or, neglecting the setting of the special priority, using the priority in the current system message; alternatively, ignoring all priority settings, a random selection of available frequencies or systems is made.
According to the method provided by this embodiment, in a cell providing an MBMS, a UE receiving the MBMS or a UE interested in the MBMS may determine, through the received load control information of the MBMS, whether to use a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE, and if it is determined that the frequency used by the MBMS is not used as the highest priority in the cell reselection priority of the UE, the UE may migrate the frequency used by the MBMS when performing cell reselection, so that network congestion caused by a large number of UEs initiating calls in a centralized time because a large number of UEs use the frequency used by the MBMS as the highest priority can be avoided.
As shown in fig. 5, another network congestion control method is provided in the embodiment of the present invention. In the method of this embodiment, the MBMS load control information sent by the base station to the UE may be an MBMS dedicated parameter, and the MBMS dedicated parameter may be a threshold related to the MBMS, or may be an offset related to the MBMS. The MBMS-related threshold or MBMS-related offset may be specific to a UE that is receiving MBMS or interested in MBMS to determine whether to migrate out of frequency for use by the MBMS. As shown in fig. 5, the method may include:
step 501: the base station detects a network condition.
The base station may detect network conditions such as radio resource congestion conditions, or radio link conditions, or transport network congestion conditions, or transport network quality, or network load conditions.
Step 502: the base station sets a threshold related to the MBMS or an offset related to the MBMS according to the detected network condition, and sends the threshold related to the MBMS or the offset related to the MBMS to the UE.
In this embodiment, if the UE receiving the MBMS or the UE interested in the MBMS sets the frequency used by the MBMS to the highest priority for cell reselection, the base station may determine whether the UE receiving the MBMS or the UE interested in the MBMS migrates the frequency used by the MBMS by setting a threshold related to the MBMS or an offset related to the MBMS. If the UE receiving the MBMS or the UE interested in the MBMS sets the MBMS service frequency to a low priority, the base station may also determine whether to migrate to the frequency used by the MBMS by setting a threshold related to the MBMS or an offset related to the MBMS.
In the embodiment of the present invention, the UE migrating out of the frequency used by the MBMS may reselect to a cell of another frequency or a RAT system through cell reselection.
In this embodiment, the base station may set a threshold for serving cells associated with MBMS reselection to a low priority RAT system or frequency, such as Thresh, based on the detected network conditionsServing，Low-MBMS，ThreshServing，Low-MBMSIt may be the frequency used for MBMS usage that is set to cell reselection high priority, e.g. highest priority, the threshold of the serving cell when the UE reselects to a low priority RAT system or frequency. The base station may also set a neighbor cell threshold, which may be denoted as Thresh, for example, for reselecting to a low priority RAT system or frequency associated with MBMS based on the detected network conditionsX，Low-MBMS，ThreshX，Low-MBMSIt may be a threshold for setting the frequency used by MBMS to a cell reselection high priority, e.g., highest priority, UE reselection to a neighbor cell of a low priority RAT system or frequency. The base station may also set thresholds for initiating measurements of other RAT systems or frequencies associated with the MBMS based on the detected network conditions, such asTo be recorded as SnonIntraSearch-MBMS，SnonIntraSearch-MBMSIt may be that the frequency used for MBMS is set to cell reselection high priority, e.g. highest priority, and the UE starts a threshold to measure other RAT systems or frequencies. The base station may also set a neighbor cell threshold Thresh for MBMS-related reselection to a high priority RAT system or frequency based on the detected network conditionsX，High-MBMSSaid ThreshX，High-MBMSMay be a threshold for a UE that sets the frequency used by MBMS to a cell reselection low priority to reselect to a high priority RAT system or frequency. The base station can send Thresh through system messageServing，Low-MBMS，ThreshX，Low-MBMS，SnonIntraSearch-MBMSAnd ThreshX，High-MBMSAnd sending the information to the UE.
Alternatively, the base station may set a threshold Thresh for the serving cell when reselecting to a low priority RAT system or frequencyServing，LowThe associated MBMS offset may be referred to as MBMS offset 1. The base station may also set a threshold Thresh with neighbor cells reselected to a low priority RAT system or frequencyX，LowThe associated MBMS offset may be referred to as MBMS offset 2. The base station may also set a threshold S that initiates measurement of other RAT systems or frequenciesnonIntraSearchThe associated MBMS offset may be referred to as MBMS offset 3. The base station may also set a neighbor cell threshold Thresh associated with reselection to a high priority RAT system or frequencyX，HighThe associated MBMS offset may be referred to as MBMS offset 4. The MBMSoffset1, MBMSoffset2 and MBMSoffset3 may be different values, and the base station may send the MBMSoffset1, MBMSoffset2, MBMSoffset3 and MBMSoffset4 to the UE through system messages. The MBMSoffset1, MBMSoffset2, MBMSoffset3 and MBMSoffset4 may also be the same value, such as MBMSoffset, in which case the UE may only need to send MBMSoffset to the UE.
Step 503: and the UE determines whether to migrate the frequency used by the MBMS according to the received threshold related to the MBMS or the offset related to the MBMS.
After receiving the threshold related to the MBMS, if the UE is receiving the MBMS or the UE is interested in the MBMS, the UE determines whether to migrate a frequency used by the MBMS.
For example, in this embodiment, if the priority of the frequency of the current serving cell of the UE is higher than the priority of the frequency of the neighboring cell, the UE receiving the MBMS or interested in the MBMS may be according to the received ThreshServing，Low-MBMS，ThreshX，Low-MBMSAnd SnonIntraSearch-MBMSJudging that the signal quality of the current serving cell is less than or equal to SnonIntraSearch-MBMSCell measurements are made for other RAT systems or other frequencies, if the signal quality of the serving cell is less than or equal to ThreshServing，Low-MBMSAnd the signal quality of the other RAT system or other frequency cell is greater than ThreshX，Low-MBMSThe UE may determine to migrate out of the frequency used by the MBMS.
Alternatively, if the priority of the frequency of the current serving cell of the UE is lower than the priority of the frequency of the neighboring cell, the UE receiving the MBMS or interested in the MBMS may determine whether to migrate the frequency used by the MBMS according to the received MBMS offset1, MBMS offset2, and MBMS offset 3. The signal quality of the UE in the current serving cell is less than or equal to SnonIntraSearchMBMSoffset3, cell measurements of other RAT systems or other frequencies are made if the signal quality of the serving cell is less than or equal to ThreshServing，LowMBMSoffset1, and the signal quality of the other RAT system or cell of other frequency is greater than ThreshX，Low-MBMS offset2, determining the frequency of migration out of the MBMS usage. Wherein, the SnonIntraSearch，ThreshServing，LowAnd ThreshX，LowMay be obtained through system messages.
In this embodiment, if the cell priority of the current serving cell of the UE is lower than the cell priority of the neighboring cell, the UE receiving the MBMS or the UE interested in the MBMS may receive ThreshX，High-MBMSAnd determining whether to migrate out of the frequency used by the MBMS. If it isThe signal quality of the cells of other RAT systems or other frequencies is greater than ThreshX，High-MBMSThe UE may determine to migrate out of the frequency used by the MBMS. Or, if the UE receiving the MBMS or interested in the MBMS can determine whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs according to the received MBMS offset4 sent by the base station, if the signal quality of other RAT systems or other frequency cells is greater than Thresh, the UE can determine whether to use the frequency used by the MBMS as the highest priorityX，High-MBMS offset4 determining the frequency of migration out of the MBMS usage. Wherein said ThreshX，HighMay be obtained through system messages.
In the embodiment of the present invention, after receiving the load control information, the UE may immediately determine whether to migrate the frequency used by the MBMS, or may determine whether to migrate the frequency used by the MBMS when the UE initiates a unicast service.
According to the method provided by the embodiment, the base station can set the threshold related to the MBMS or the offset related to the MBMS according to the network condition, so that the UE receiving the MBMS or the UE interested in the MBMS determines whether to migrate the frequency used by the MBMS through cell reselection, and thus, according to the network condition, network congestion caused by centralized call initiation of a large number of UEs can be avoided.
As shown in fig. 6, an embodiment of the present invention further provides a network congestion control method, in which a base station providing an MBMS through a specific frequency may send load control information of the MBMS to an adjacent base station, or notify a network condition to the adjacent base station, and the adjacent base station may send the received load control information to a UE under coverage of the adjacent base station, or obtain the load control information of the MBMS of the base station providing the MBMS according to the received network condition, and then send the obtained load control information to the UE under the adjacent base station. After receiving the load control information of the MBMS, the UE residing in an adjacent base station and interested in the MBMS may determine, according to the load control information of the MBMS, whether to use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE. As shown in fig. 6, the method may include:
step 601: the first base station detects a network condition of a cell providing an MBMS.
And the cell supported by the first base station transmits the MBMS by using a specific frequency, and the first base station detects the network condition of the cell.
Step 602: the first base station transmits load control information of the MBMS to an adjacent base station, or transmits the detected network status to an adjacent base station.
The MBMS load control information may be determined by the detected network condition.
In this embodiment, the load information of the MBMS may be a load control factor of the MBMS, or a load control index of the MBMS, or an indicator, and specifically, the load control information of the MBMS in step 401 in the method embodiment shown in fig. 4 may be referred to, which is not described herein any more.
The network condition may include a radio resource congestion condition, or a radio link condition, or a transport network congestion condition, or a transport network quality, or a network load condition, etc.
The first base station may send the load control information of the MBMS to the neighboring base station through an X2 interface, or send the detected network condition to the neighboring base station, for example, may be sent in a resource status reporting (resource status reporting) procedure.
Step 603: and the adjacent base station sends the load control information of the MBMS to the UE under the adjacent base station, or sends the load control information of the MBMS and the information of the frequency used by the MBMS.
If the neighboring base station directly receives the load control information of the MBMS from the base station providing the MBMS, the neighboring base station may directly transmit the load control information of the MBMS to the UE. If the neighboring base station receives the network status information from the MBMS providing base station, the neighboring base station may derive the load control information of the MBMS according to the network status information, and then transmit the obtained load control information of the MBMS to the UE.
In this embodiment, the neighboring base station may transmit the load control information of the MBMS and the frequency information providing the MBMS through a system message or an RRC dedicated message, for example, an MBMS scheduling information message.
When the neighboring cell of the neighboring base station has only one frequency, the neighboring base station may send only the load control information of the MBMS, and if the neighboring cell of the neighboring base station has multiple frequencies, the neighboring base station may send the coverage control information of the MBMS and the information of the frequencies used by the MBMS.
Step 604: and the UE determines whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the received MBMS load control information.
If the UE is interested in the MBMS, the UE may determine whether to take a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE according to the received load control information of the MBMS.
For example, if the MBMS load control information received by the UE is a load control factor, the UE may determine, by using a derived random number, whether to use a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE. If the MBMS load control information received by the UE is the MBMS load control index, the UE may first obtain a corresponding load control factor through the MBMS load control index, and then determine whether to use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE through the derived random number. For example, if the load control factor received by the UE is 0.1, the UE may derive a random number from 0 to 1, and if the derived random number is greater than 0.1, the UE determines that, in the cell reselection priorities of the UE, the frequency used by the MBMS is not the highest priority. If the load control information of the MBMS received by the UE is an indicator, the UE may determine, according to a rule known to the base station, that the frequency used by the MBMS is not used as the highest priority in the cell reselection priorities of the UE.
According to the scheme provided by this embodiment, a base station where a cell providing an MBMS using a specific frequency is located sends load control information or network status of the MBMS to an adjacent base station, and the adjacent base station sends the load control information of the MBMS to a UE under coverage, so that the UE interested in the MBMS does not determine the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs according to the MBMS load control information, and thus, it is possible to avoid that all UEs interested in the MBMS migrate to a cell using the frequency of the MBMS, and thus, network congestion of the cell using the frequency can be avoided.
As shown in fig. 7, an embodiment of the present invention further provides a network congestion control method. In the method of the present embodiment, a base station providing an MBMS through a specific frequency may transmit load control information of the MBMS to an adjacent base station. When the UE residing in the neighboring base station is interested in the MBMS, the UE may determine whether to migrate to the frequency used by the MBMS according to the load control information of the MBMS. In this embodiment, the MBMS load control information may be a threshold associated with the MBMS, or may be an offset associated with the MBMS. As shown in fig. 7, the method may include:
step 701: the first base station detects a network condition of a cell providing an MBMS.
Step 702: and the first base station transmits the load control information of the MBMS to the adjacent base station.
In this embodiment, the MBMS load control information may include an MBMS-related threshold or an MBMS-related offset, and the MBMS-related threshold or the MBMS-related offset may refer to the related load control information described in step 502 in the embodiment shown in fig. 5.
The first base station may send the load control information of the MBMS to the neighboring base station through an X2 interface, for example, in a resource status reporting (resource status reporting) procedure.
Step 703: and the adjacent base station sends the load control information of the MBMS to the UE under the adjacent base station, or sends the load control information of the MBMS and the information of the frequency used by the MBMS to the UE under the adjacent base station.
In this embodiment, the neighboring base station may transmit the load control information of the MBMS and the frequency information providing the MBMS through a system message or an RRC dedicated message, for example, an MBMS scheduling information message.
When the neighboring cell of the neighboring base station has only one frequency, the neighboring base station may send only the load control information of the MBMS, and if the neighboring cell of the neighboring base station has multiple frequencies, the neighboring base station may send the coverage control information of the MBMS and the information of the frequencies used by the MBMS.
Step 704: the UE may determine whether to migrate to a frequency used by the MBMS according to the received MBMS load control information.
If the UE is interested in the MBMS, the UE may determine whether to migrate to a frequency used by the MBMS according to the received load control information of the MBMS.
If the priority of the frequency of the adjacent base station is lower than that of the frequency of the first base station, the UE interested in the MBMS receives ThreshX，High-MBMSIf the signal quality of the MBMS-providing cell supported by the first base station is less than or equal to ThreshX，High-MBMSThe UE determines not to migrate to the frequency used by the MBMS. If it is MBMS offset4, if the signal quality of the MBMS-providing cell supported by the first base station is less than or equal to ThreshX，High+ MBMS offset4, the UE determines not to migrate to the frequency used by the MBMS. Wherein said ThreshX，HighMay be obtained through system messages.
If the priority of the frequency of the adjacent base station is higher than that of the first base stationThe frequency of the station is higher in priority, and the signal quality of the serving cell of the UE interested in the MBMS is less than or equal to SnonIntraSearch-MBMSThe UE performs measurement of the different frequency or different RAT system, if the signal quality of the serving cell is less than ThreshServing，Low-MBMSAnd the signal quality of the MBMS-providing cell supported by the first base station is greater than ThreshX，Low-MBMSThe UE determines to migrate to the frequency used by the MBMS, otherwise, determines not to migrate to the frequency used by the MBMS. If the base station sends the offset, the signal quality of the UE in the current serving cell is less than or equal to SnonIntraSearch+ MBMSoffset3, the UE makes inter-frequency or inter-RAT system measurements if the serving cell's signal quality is less than or equal to ThreshServing，low+ MBMSoffset1, and the signal quality of the MBMS-providing cell supported by the first base station is greater than ThreshX，Low+ MBMS offset2, determining the frequency of migration to the MBMS usage. If the signal quality of the cell providing the MBMS supported by the first base station is less than ThreshX，Low+ MBMS offset2, determining the frequency of non-migration to the MBMS usage. Wherein, the SnonIntraSearch，ThreshServing，LowAnd ThreshX，LowMay be obtained through system messages.
According to the scheme provided by the embodiment, the base station where the cell providing the MBMS with the specific frequency is located sends the load control information of the MBMS to the neighboring base station, and the neighboring base station sends the load control information of the MBMS to the UE under coverage, so that the UE interested in the MBMS can determine whether to migrate to the frequency used by the MBMS according to the MBMS load control information, and thus, a large number of UEs can be controlled to migrate to the frequency used by the MBMS, thereby avoiding network congestion caused by centralized call initiation of the large number of UEs.
Corresponding to the network congestion control method provided by the embodiment of the present invention, the embodiment of the present invention further provides a UE capable of implementing the method. As shown in fig. 8, an embodiment of the present invention provides a UE80, where the UE80 may be the UE in the above method embodiment. The UE80 may include: a receiver 820 for receiving the load control information of the MBMS transmitted by the base station; a processor 840, configured to determine whether to use the frequency used by the MBMS as a highest priority in cell reselection priorities of the UEs according to the load control information received by the receiver 820.
Further, the receiver 820 can be configured to receive a load control index, a load control factor or indicator, an MBMS-related threshold, or an MBMS-related offset transmitted by a base station. The load control index, the load control factor and the indicator may refer to the description of the embodiment shown in fig. 4.
If it is determined that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UEs, the determining that the frequency used by the MBMS is not the highest priority includes: ignoring the frequency used by the MBMS as the highest priority; or, setting the frequency of the MBMS use as the lowest priority; or, neglecting the priority configured by the special priority, and using the priority in the current system message; alternatively, the available frequencies or systems are randomly selected, ignoring all configured priorities.
The processor 840, when determining whether to use the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs according to the load control information received by the receiver, may refer to the content described in step 402 in the embodiment shown in fig. 4 or the content described in step 604 in the embodiment shown in fig. 6, which is not described herein again.
As shown in fig. 8B, an embodiment of the present invention further provides a UE 80B, where the UE 80B may include: a receiver 820B, configured to receive load control information of a multimedia broadcast multicast service MBMS sent by a base station; the processor 840B determines whether to migrate out of the frequency used by the MBMS or determine whether to migrate to the frequency used by the MBMS according to the load control information.
The load control information transmitted by the base station and received by the receiver 820B may include: an MBMS-associated threshold or an MBMS-associated offset; the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS; the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS. The MBMS-associated threshold and the MBMS-associated offset may be as described above with reference to the embodiment shown in fig. 5.
When determining whether to migrate the frequency used by the MBMS or determining whether to migrate the frequency used by the MBMS according to the load control information, the processor 840B may refer to the content described in step 503 in the embodiment shown in fig. 5 or step 704 in the embodiment shown in fig. 7, which is not described in detail herein.
Corresponding to the network congestion control method provided by the embodiment of the invention, the embodiment of the invention also provides a base station capable of realizing the method. As shown in fig. 9, an embodiment of the present invention provides a base station 90, where the base station 90 may be as in the embodiments shown in fig. 4 or fig. 5, and the base station 90 may include: a determining unit 920, configured to determine load control information of an MBMS, where the load control information is used by a user equipment UE to determine whether to use a frequency used by the MBMS as a highest priority in a cell reselection priority of the UE, or the load control information is used by the UE to determine whether to migrate out of a frequency used by the MBMS or determine whether to migrate to a frequency used by the MBMS; a sending unit 940, configured to send the load control information to the UE.
The determining unit 920 is further configured to determine a load control index, a load control factor, an indicator, an MBMS-related threshold, or an MBMS-related offset; the indicator is used for indicating that the UE takes the frequency used by the MBMS as the highest priority or does not take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE; the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS; the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS.
The determining unit 920 may refer to the content described in step 401 in the embodiment described in fig. 4 above, or the content described in steps 501 and 502 in the embodiment shown in fig. 5 above, and details of determining the load control information and the content of sending the load control information by the sending unit 940 are not repeated here.
An embodiment of the present invention further provides a base station 100, where the base station 100 may be the base station in the embodiments shown in fig. 6 and fig. 7, and the base station 100 may include an obtaining unit 1020, configured to receive load control information of an MBMS sent by an adjacent base station or receive a network condition sent by an adjacent base station, and determine the load control information of the MBMS according to the network condition, where the load control information of the MBMS is used by a user equipment UE to determine whether a frequency used by the MBMS is used as a highest priority in a cell reselection priority of the UE. And a sending unit 1040, configured to send the load control information of the MBMS obtained by the obtaining unit 1020 to a UE.
The embodiment of the present invention further provides a communication system, which may include the UE80, or the UE 80B, or the base station 90, or the base station 100 provided in the foregoing embodiment. The specific communication method of the network device in the communication system may refer to the contents in the method embodiment provided by the present invention.
Those skilled in the art will appreciate that information may be represented using any technical means (technical technologies), such as data (data), instructions (instructions), commands (command), information (information), signals (signal), bits (bit), symbols (symbol) may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles (magnetic particles), optical fields or particles (optical particles), or any combination thereof.
Those of skill in the art will further appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the invention may be implemented in electronic hardware, computer software, or combinations of both. To clearly illustrate the interchangeability of hardware and software, various illustrative components and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present embodiments.
The various illustrative logical blocks, modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a digital signal processor, an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. For example, a storage medium may be coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may be located in a user terminal. In the alternative, the processor and the storage medium may reside in different components in a user terminal.
In one or more exemplary designs, the functions described above in connection with the embodiments of the invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media that facilitate transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. For example, such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store program code in the form of instructions or data structures and which can be read by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Additionally, any connection is properly termed a computer-readable medium, and, thus, is included if the software is transmitted from a website, server, or other remote source over a coaxial cable, fiber optic computer, twisted pair, Digital Subscriber Line (DSL), or wirelessly, e.g., infrared, radio, and microwave. Such discs (disk) and disks (disc) include compact disks, laser disks, optical disks, DVDs, floppy disks and blu-ray disks where disks usually reproduce data magnetically, while disks usually reproduce data optically with lasers. Combinations of the above may also be included in the computer-readable medium.
The foregoing description of the invention is provided to enable any person skilled in the art to make or use the invention, and any modifications based on the disclosed content should be considered obvious to those skilled in the art, and the general principles defined by the present invention may be applied to other variations without departing from the spirit or scope of the invention. Thus, the disclosure is not intended to be limited to the embodiments and designs described, but is to be accorded the widest scope consistent with the principles of the invention and novel features disclosed.
Claims (19)
1. A method for network congestion control, comprising:
user Equipment (UE) receives load control information of a Multimedia Broadcast Multicast Service (MBMS) sent by a base station, wherein the load control information of the MBMS sent by the base station is sent by an adjacent base station of the base station; or the load control information of the MBMS sent by the base station is obtained according to the network status information sent by the neighboring base station, or the load control information of the MBMS sent by the base station is set by the base station according to the network status where the base station is located, or the load control information of the MBMS sent by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network; the load control information is used for the UE to determine whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE;
and the UE determines whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the load control information.
2. The method of claim 1, wherein the load control information comprises: a load control index, a load control factor, or an indicator, where the indicator is used to indicate that the UE takes the frequency used by the MBMS as the highest priority or does not take the frequency used by the MBMS as the highest priority in a cell reselection priority of the UE.
3. The method of claim 1 or 2, wherein if the UE determines that the frequency used by the MBMS is not the highest priority in the cell reselection priorities of the UE, the not taking the frequency used by the MBMS as the highest priority comprises:
ignoring the frequency used by the MBMS as the highest priority; or,
setting a frequency used by the MBMS to a lowest priority; or,
ignoring the priority of the dedicated priority configuration, using the priority in the current system message; or,
ignoring all configured priorities, a random selection of available frequencies or systems is made.
4. The method of claim 1 or 2, wherein the UE determining whether to use the frequency used by the MBMS as the highest priority among the cell reselection priorities of the UEs according to the load control information comprises:
and when the UE initiates a unicast service, determining whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the load control information.
5. The method of claim 3, wherein the UE determining whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UEs according to the load control information comprises:
and when the UE initiates a unicast service, determining whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE according to the load control information.
6. A method for network congestion control, comprising:
user Equipment (UE) receives load control information of a Multimedia Broadcast Multicast Service (MBMS) sent by a base station, wherein the load control information of the MBMS sent by the base station is sent by an adjacent base station of the base station; or the load control information of the MBMS sent by the base station is obtained according to the network status information sent by the neighboring base station, or the load control information of the MBMS sent by the base station is set by the base station according to the network status where the base station is located, or the load control information of the MBMS sent by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network; the load control information is used for the UE to determine whether to migrate out of the frequency used by the MBMS, or the load control information is used for determining whether to migrate the UE into the frequency used by the MBMS;
and the UE determines whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS according to the load control information.
7. The method of claim 6, wherein the load control information comprises: an MBMS-associated threshold or an MBMS-associated offset;
the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS;
the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS.
8. The method of claim 7 or 6, wherein the UE determining whether to migrate out of the frequency used by the MBMS according to the load control information comprises:
and when the UE initiates a unicast service, the UE determines whether the frequency used by the MBMS is migrated or not according to the load control information.
9. A method for network congestion control, comprising:
a base station determines the load control information of a Multimedia Broadcast Multicast Service (MBMS), and the load control information of the MBMS determined by the base station is sent by an adjacent base station of the base station; or the load control information of the MBMS determined by the base station is obtained by the network condition information sent by the adjacent base station; or the load control information of the MBMS determined by the base station is set by the base station according to the network condition of the base station, or the load control information of the MBMS determined by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network; the load control information is used for a User Equipment (UE) to determine whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE, or the load control information is used for the UE to determine whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS;
and the base station sends the load control information to the UE.
10. The method of claim 9, wherein if the load control information is used for a UE to determine whether to use the frequency used by the MBMS as a highest priority among cell reselection priorities of the UE, the load control information comprises: a load control index, load control factor, or indicator; the indicator is used for indicating that the UE takes the frequency used by the MBMS as the highest priority or does not take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE.
11. The method of claim 9, wherein if the load control information is used by the UE to determine whether to migrate out of the frequency used by the MBMS or whether to migrate to the frequency used by the MBMS, the load control information comprises an MBMS-associated threshold or an MBMS-associated offset;
the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS;
the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS.
12. A User Equipment (UE), comprising:
the system comprises a receiver and a base station, wherein the receiver is used for receiving the load control information of the Multimedia Broadcast Multicast Service (MBMS) sent by the base station, and the load control information of the MBMS sent by the base station is sent by an adjacent base station of the base station; or the load control information of the MBMS sent by the base station is obtained according to the network status information sent by the neighboring base station, or the load control information of the MBMS sent by the base station is set by the base station according to the network status where the base station is located, or the load control information of the MBMS sent by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network; the load control information is used for the UE to determine whether the frequency used by the MBMS is taken as the highest priority in the cell reselection priorities of the UE;
a processor, configured to determine whether to use the frequency used by the MBMS as a highest priority in a cell reselection priority of the UE according to the load control information received by the receiver.
13. The UE of claim 12, wherein the load control information sent by the receiver comprises a load control index, a load control factor, or an indicator indicating whether the UE uses the MBMS frequency as the highest priority or does not use the MBMS frequency as the highest priority in the cell reselection priorities of the UEs.
14. The UE of any of claims 13 or 12, wherein the processor determines that a frequency used by the MBMS is not to be a highest priority among cell reselection priorities of UEs, and wherein the not using the frequency used by the MBMS as the highest priority comprises:
ignoring the frequency used by the MBMS as the highest priority; or,
setting a frequency used by the MBMS to a lowest priority; or,
ignoring the priority of the dedicated priority configuration, using the priority in the current system message; or,
ignoring all configured priorities, a random selection of available frequencies or systems is made.
15. A User Equipment (UE), comprising:
the receiver is used for receiving the load control information of the multimedia broadcast multicast service MBMS sent by the base station;
the processor is used for determining whether the frequency used by the MBMS is migrated or not according to the load control information, and the load control information of the MBMS sent by the base station is sent by an adjacent base station of the base station; or the load control information of the MBMS sent by the base station is obtained according to the network status information sent by the neighboring base station, or the load control information of the MBMS sent by the base station is set by the base station according to the network status where the base station is located, or the load control information of the MBMS sent by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network.
16. The UE of claim 15, wherein the receiver is configured to receive the load control information transmitted by the base station comprises: an MBMS-associated threshold or an MBMS-associated offset;
the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS;
the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS.
17. A base station, comprising:
a determining unit, configured to determine load control information of a multimedia broadcast multicast service MBMS, where the load control information of the MBMS determined by the base station is sent by an adjacent base station of the base station; or the MBMS load control information determined by the base station is obtained from the network status information sent by the neighboring base station, or the MBMS load control information determined by the base station is set by the base station according to the network status where the base station is located, or the MBMS load control information determined by the base station is determined by the base station according to the network congestion indication sent by the corresponding core network; the load control information is used for a User Equipment (UE) to determine whether to take the frequency used by the MBMS as the highest priority in the cell reselection priorities of the UE, or the load control information is used for the UE to determine whether to migrate the frequency used by the MBMS or determine whether to migrate the frequency used by the MBMS;
and a transmitting unit configured to transmit the load control information to the UE.
18. The base station of claim 17, wherein the determining unit is further configured to determine load control information used by a user equipment UE to determine whether to use the frequency used by the MBMS as a highest priority in a cell reselection priority of the UE, and wherein the load control information comprises: a load control index, a load control factor, or an indicator to indicate that the UE has the frequency used by the MBMS as the highest priority or does not have the frequency used by the MBMS as the highest priority in a cell reselection priority of the UE.
19. The base station of claim 17, wherein the determining unit is further configured to determine load control information for the UE to determine whether to migrate out of the frequency used by the MBMS or whether to migrate to the frequency used by the MBMS, and wherein the load control information comprises: including an MBMS-associated threshold or an MBMS-associated offset;
the MBMS-related threshold comprises a threshold used for a UE receiving the MBMS or a UE interested in the MBMS to determine whether to migrate out or migrate to a frequency used by the MBMS;
the MBMS-related offset comprises an offset for a UE that is receiving MBMS or is interested in MBMS to determine whether to migrate out of or to a frequency used by the MBMS.
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| CN107211335B (en) * | 2015-10-12 | 2020-02-14 | 华为技术有限公司 | Cell reselection method and user terminal |
| CN109328473B (en) * | 2016-05-03 | 2021-09-14 | 瑞典爱立信有限公司 | Network node and terminal device and method of operating the same |
| CN114071369B (en) * | 2020-08-06 | 2023-06-02 | 维沃移动通信有限公司 | Information transmission method, device, terminal and network equipment |
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