CN114339901A - Service switching, indicating and device, storage medium, base station and terminal - Google Patents
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Abstract
A service switching, indicating and device, storage medium, base station and terminal, the service switching indicating method includes: determining the type of the current service and the type of the service to be switched; if the type of the current service is multicast service and the type of the service to be switched is unicast service, indicating whether to execute switching to all user equipment or carrying the identification of the user equipment needing to execute switching in the downlink control information and sending the identification. The technical scheme of the invention can realize the smooth conversion from the multicast service to the unicast transmission service.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a service switching apparatus, a service indicating apparatus, a service switching method, a service indicating apparatus, a service switching apparatus, a base station, and a terminal.
Background
When a Long Term Evolution (LTE) system version 8/9(release 8/9) is implemented, Multicast service transmission is implemented by a Multicast Single Frequency Network (MBSFN) transmission mechanism, multiple cells need to synchronously schedule the same service on the same time-Frequency domain resource, because the time-Frequency domain resource is reserved, even if there is not so many data scheduling, the MBSFN mechanism cannot be used for other data transmission, so that resource waste is serious. In Release14, a single cell-point to multipoint (SC-PTM) transmission mechanism is introduced for the broadcast multicast service. User Equipment (UE) interested in the broadcast multicast service in one cell can receive the dynamically scheduled broadcast multicast service according to the configuration information, and different cells can flexibly and dynamically schedule the broadcast multicast service without synchronization.
LTE introduces multiple channels, where a Multicast Control Channel (MCCH) is used to carry configuration information of a broadcast Multicast service, a Multicast Traffic Channel (MTCH) is used to carry scheduling data of the broadcast Multicast service, and the MCCH and MTCH are mapped to a Physical Downlink Shared Channel (PDSCH). Introducing a plurality of Radio Network Temporary Identities (RNTIs) for scrambling different data to be scheduled, using a single cell Radio Network Temporary Identity (SC-RNTI) for scrambling a Physical Downlink Control Channel (PDCCH) and scheduled MCCH data, using a group Radio Network Temporary Identity (G-RNTI) for scrambling the PDCCH and the scheduled MTCH data, wherein each broadcast multicast service is associated with one G-RNTI, and the UE can selectively receive different broadcast multicast services. The SC-PTM broadcast multicast transmission mechanism shares the whole resource with the unicast service, and the base station dynamically schedules and supports the transmission of the broadcast multicast service and the unicast service in the same slot.
In a fifth generation mobile communication technology (5th generation mobile networks or 5th generation wireless systems,5G) system, terminals with different bandwidth receiving capabilities are supported. To support terminals of different bandwidth capabilities, the 3rd Generation Partnership Project (3 GPP) organization proposes the definition of a partial carrier Bandwidth (BWP), each BWP having the following Numerology characteristics: subcarrier spacing, Cyclic Prefix (CP) type, frequency domain location, bandwidth length. Meanwhile, in order to save power consumption of the terminal, after the terminal and the network complete Radio Resource Control (RRC) connection, the network configures one or more BWPs for the terminal according to bandwidth receiving capability of the terminal and service requirements. These BWPs need to be limited to the maximum reception bandwidth of the UE. The terminal/network can adaptively adjust the used BWP according to the service requirement and the load condition of the terminal, and can activate and deactivate the BWP through RRC signaling or Downlink Control Information (DCI). Currently BWP conversion is indicated by scheduling DCI, which indicates the target BWP identification to be converted. If the BWP ID is changed in the scheduling DCI, the UE needs to perform BWP conversion, convert the radio frequency center frequency point to the indicated new BWP, and transmit and receive data on the new BWP according to the resource position indicated by the DCI.
Starting from release R17 to support New Radio (NR) broadcast multicast service, LTE may be regarded as having only one BWP, but in NR, the base station configures the UE with different BWPs, including the same or different BWP numbers, the same or different BWP locations, the same or different BWP subcarrier intervals, the same or different BWP bandwidth lengths, and only one BWP is active at a time.
According to the requirements, the new wireless system needs to support the broadcast multicast service of unicast service and point-to-multipoint multicast transmission, and can dynamically switch between unicast and point-to-multipoint multicast transmission. If unicast transmission is adopted, the existing unicast service transmission mechanism can be used, a base station dynamically schedules data through a PDCCH scrambled by a cell radio network temporary identifier (C-RNTI) special for the UE, the data is borne by a PDSCH (physical shared channel), and the data can be only sent to a single UE through scrambling of the C-RNTI or sent to a group of UEs through scrambling of the G-RNTI.
However, if switching from multicast transmission to unicast transmission, how to indicate to the UE and what the UE behavior is a technical problem to be solved urgently.
Disclosure of Invention
The technical problem solved by the invention is how to realize the smooth conversion from the multicast service to the unicast transmission service.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a service switching indication method, where the service switching indication method includes: determining the type of the current service and the type of the service to be switched; if the type of the current service is multicast service and the type of the service to be switched is unicast service, indicating whether to execute switching to all user equipment or carrying the identification of the user equipment needing to execute switching in the downlink control information and sending the identification.
Optionally, the indicating, by the downlink control information, whether to perform handover to all the ues includes: and bearing switching indication information at the newly added bit position of the downlink control information and sending the switching indication information, wherein the switching indication information indicates whether to execute switching.
Optionally, the carrying, in the downlink control information, an identifier of the ue that needs to perform handover includes: and carrying the identifier of the user equipment needing to execute the switching in the bitmap or the MAC CE in the downlink control information and sending the identifier.
Optionally, before the downlink control information carries an identifier of the user equipment that needs to perform handover, the method further includes: and transmitting the bit positions in the bitmap or MAC CE corresponding to each user equipment to all the user equipment in a semi-static configuration mode or RRC signaling.
Optionally, before the downlink control information carries an identifier of the user equipment that needs to perform handover, the method further includes: and configuring new LCID for all user equipment so that the user equipment can identify the MAC CE carrying the identification of the user equipment needing to execute the switching by using the new LCID.
In order to solve the above technical problem, an embodiment of the present invention further discloses a service switching method, where the service switching method includes: receiving downlink control information from a base station, wherein the base station indicates whether to execute switching to all user equipment or not through the downlink control information when the type of the current service is multicast service and the type of the service to be switched is unicast service, or the downlink control information carries an identifier of the user equipment needing to execute switching and sends the identifier out; and determining whether to execute the switching from the multicast service to the unicast service according to the downlink control information.
Optionally, the determining whether to perform switching from the multicast service to the unicast service according to the downlink control information includes: and if the new increased bit position in the downlink control information bears the switching indication information to indicate that switching is executed, determining to execute switching and monitoring the PDCCH scrambled by the unicast scheduling C-RNTI.
Optionally, the determining whether to perform switching from the multicast service to the unicast service according to the downlink control information includes: determining the corresponding bit position in the bitmap or MAC CE of the downlink control information according to the self identification; and determining whether to execute switching according to the value of the corresponding bit position.
Optionally, the service switching method further includes: if the switching is determined to be executed, monitoring a PDCCH scrambled by a unicast scheduling C-RNTI; or if the switching is determined to be performed, switching to the PDCCH which is scrambled by the unicast scheduling C-RNTI in the preset partial bandwidth.
Optionally, before determining the bit position corresponding to the bitmap of the downlink control information or the MAC CE according to the identifier of the ue, the method further includes: identifying the MAC CE with a new LCID, the new LCID being preconfigured by the base station.
The embodiment of the invention also discloses a service switching indicating device, which comprises: a service type determining module, configured to determine a type of a current service and a type of a service to be switched; and a switching indication module, configured to indicate whether to perform switching to all user equipments through downlink control information if the type of the current service is a multicast service and the type of the service to be switched is a unicast service, or carry, in the downlink control information, an identifier of a user equipment that needs to perform switching, and send the identifier.
The embodiment of the invention also discloses a service switching device, which comprises: a receiving module, configured to receive downlink control information from a base station, where the base station indicates, through the downlink control information, whether to perform switching to all user equipment when the current service type is a multicast service and the service type to be switched is a unicast service, or carries, in the downlink control information, an identifier of the user equipment that needs to perform switching, and sends the identifier; and the switching determining module is used for determining whether to execute the switching from the multicast service to the unicast service according to the downlink control information.
The embodiment of the invention also discloses a storage medium, wherein a computer program is stored on the storage medium, and the computer program executes the steps of the service switching indication method or the steps of the service switching method when being executed by a processor.
The embodiment of the invention also discloses a base station, which comprises a memory and a processor, wherein the memory is stored with a computer program which can be operated on the processor, and the processor executes the steps of the service switching indication method when operating the computer program.
The embodiment of the invention also discloses a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer program which can be operated on the processor, and the processor executes the steps of the service switching method when operating the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the technical scheme of the invention, when the base station needs to switch from the multi-broadcast service to the unicast service, the downlink control information indicates whether to execute the switching to all the user equipment, so that the user equipment can monitor the unicast service after receiving the indication, thereby avoiding continuous monitoring and achieving the purpose of saving electricity; or, the base station may also carry the identifier of the user equipment that needs to perform the switching in the downlink control information, so that only part of the user equipment that needs to perform the switching monitors the unicast service, thereby avoiding all the user equipment from monitoring the unicast service, and reducing unnecessary power consumption of the user equipment.
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Fig. 1 is a flowchart of a service switching indication method according to an embodiment of the present invention;
fig. 2 is a flowchart of a service switching method according to an embodiment of the present invention;
fig. 3 is a structural diagram of a service switching indication apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a service switching apparatus according to an embodiment of the present invention.
Detailed Description
As described in the background art, how to indicate to the UE and what the UE behavior is if switching from multicast transmission to unicast transmission is a technical problem to be solved.
In the technical scheme of the invention, when the base station needs to switch from the multi-broadcast service to the unicast service, the downlink control information indicates whether to execute the switching to all the user equipment, so that the user equipment can monitor the unicast service after receiving the indication, thereby avoiding continuous monitoring and achieving the purpose of saving electricity; or, the base station may also carry the identifier of the user equipment that needs to perform the switching in the downlink control information, so that only part of the user equipment that needs to perform the switching monitors the unicast service, thereby avoiding all the user equipment from monitoring the unicast service, and reducing unnecessary power consumption of the user equipment.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a flowchart of a service switching indication method according to an embodiment of the present invention.
The service switching indication method of the embodiment can be used for the base station side.
It will be appreciated that in 5G systems, or other new technology systems, unicast traffic is point-to-point transmissions; multicast services refer to point-to-multipoint transmissions.
Specifically, the service switching indication method shown in fig. 1 may include the following steps:
step S101: determining the type of the current service and the type of the service to be switched;
step S102: if the type of the current service is multicast service and the type of the service to be switched is unicast service, indicating whether to execute switching to all user equipment or carrying the identification of the user equipment needing to execute switching in the downlink control information and sending the identification.
It should be noted that the sequence numbers of the steps in this embodiment do not represent a limitation on the execution sequence of the steps.
In this embodiment, when service switching is required, the base station may determine the type of the current service and the type of the service to be switched. Specifically, the scenario requiring switching from the multicast service to the unicast service may include the following scenarios: switching from a point-to-multipoint propagation mechanism to a point-to-point transmission; if the Broadcast Multicast Service is transmitted on a specific Broadcast Multicast Service (MBS) BWP, the unicast Service is transmitted on another BWP, the currently activated BWP is the MBS BWP, some UEs have a higher priority unicast Service schedule than the MBS Service, and the base station needs to instruct the UE to perform BWP conversion, i.e., instruct the UE to perform Service switching.
In a specific implementation, the base station may indicate whether to perform handover to all the ues through the downlink control information. In the current multicast service, the base station may simultaneously schedule data to a plurality of user equipments within the group. Under the condition that the number of the user equipment in the current multicast service is smaller than the preset threshold, the base station can select whether to execute the switching or not to indicate all the user equipment through the downlink control information.
Specifically, the UE interested in the same MBS service in the cell receives the DCI, if the DCI indicates that the conversion to point-to-point transmission is needed, the UE starts to monitor the PDCCH scrambled by the unicast scheduling C-RNTI, otherwise, the UE continues to monitor the PDCCH scrambled by the G-RNTI associated with the corresponding MBS service.
Or, the base station may also carry the identifier of the user equipment that needs to perform handover in the downlink control information, and send the identifier. That is, the base station indicates in the DCI which UEs need to do unicast data scheduling. Correspondingly, the user equipment with the identifier starts to monitor the PDCCH scrambled by the C-RNTI for unicast data scheduling after receiving the indication.
In the embodiment of the invention, when the base station needs to switch from the multi-broadcast service to the unicast service, the downlink control information indicates whether to execute the switching to all the user equipment, so that the user equipment can monitor the unicast service after receiving the indication, thereby avoiding the continuous monitoring and achieving the purpose of saving electricity; or, the base station may also carry the identifier of the user equipment that needs to perform the switching in the downlink control information, so that only part of the user equipment that needs to perform the switching monitors the unicast service, thereby avoiding all the user equipment from monitoring the unicast service, and reducing unnecessary power consumption of the user equipment.
In one non-limiting embodiment, step S102 shown in fig. 1 may include the following steps: and bearing switching indication information at the newly added bit position of the downlink control information and sending the switching indication information, wherein the switching indication information indicates whether to execute switching.
In specific implementation, a new bit (bit) field may be introduced in the DCI to carry the handover indication information. In particular, the new bit field may include a new bit that has a different value and is indicated as different. If yes, setting the newly added bit to be 0 to indicate that the current transmission mechanism is unchanged; the new bit is set to 1 indicating that the transmission scheme is changed.
Accordingly, the UE determines whether to perform handover by determining a value of a newly added bit in a new bit field after receiving the DCI.
In another non-limiting embodiment, step S102 shown in fig. 1 may include the following steps: and carrying the identifier of the user equipment needing to execute the switching in the bitmap or the MAC CE in the downlink control information and sending the identifier.
Different from the foregoing embodiments, which indicate whether to switch to all UEs, the embodiment of the present invention indicates whether to switch to some UEs.
In a specific implementation, the base station first determines an identifier of a user equipment that needs to perform handover, and carries the identifier in a bitmap (bitmap) or a Media Access Control (MAC) Control Element (CE) in DCI to transmit the identifier. Since different UEs have different bit positions in the bitmap or MAC CE, the base station needs to set a value corresponding to the bit position to indicate whether to perform handover to the corresponding UE. For example, if the UE needs to perform transmission mechanism conversion, the bit position corresponding to the UE is set to 1; and if the UE does not need to carry out transmission mechanism conversion, setting the bit position corresponding to the UE to be 0. The present invention is not limited to this embodiment.
Correspondingly, after receiving the DCI or the MAC CE, the UE can perform switching from multicast to unicast by comparing the identifier of the UE with the identifier carried by the DCI bitmap or comparing the identifier of the UE with the identifier carried by the MAC CE, namely monitoring the PDCCH scrambled by the C-RNTI in unicast scheduling if the identifiers are consistent, or else, the UE continues monitoring the PDCCH scrambled by the G-RNTI associated with the corresponding MBS service.
Wherein different UEs have different bit (bit) positions in the bitmap or MAC CE. For example, if the corresponding bit position of the UE is set to 1, it indicates that the transmission mechanism conversion is required; if the corresponding bit position of the UE is set to 0, it indicates that no transmission mechanism conversion is required. The present invention is not limited to this embodiment.
Further, the bit positions in the bitmap or MAC CE corresponding to each ue are sent to all ues in a semi-static configuration manner or through RRC signaling.
In this embodiment, in order to enable the UE to know the bit position in the bitmap or the MAC CE in advance, the base station may send the bit position corresponding to each UE to all the UEs in advance in a semi-static configuration manner or through RRC signaling.
Accordingly, the UE may determine whether it needs to perform handover in a bitmap or a MAC CE according to its corresponding bit position in a subsequent step.
Further, configuring a new Logical Channel IDentification (LCID) for all the ue, so that the ue identifies the MAC CE carrying the identifier of the ue that needs to perform handover by using the new LCID.
In this embodiment, the new LCID may indicate a type of the control message, that is, a type of the control message is switching information from a multicast service to a unicast service. Accordingly, the UE may receive the identification MAC CE using the new LCID.
Referring to fig. 2, an embodiment of the present invention further discloses a service switching method, which is used for a user equipment side.
Specifically, the service switching method may include the following steps:
step S201: receiving downlink control information from a base station;
step S202: and determining whether to execute the switching from the multicast service to the unicast service according to the downlink control information.
When the current service type is multicast service and the service type to be switched is unicast service, the base station indicates whether to execute switching to all user equipment or carries the identifier of the user equipment needing to execute switching in the downlink control information and sends the identifier out
In this embodiment, since the base station carries an instruction of whether to perform the handover in the DCI, the UE may determine whether to perform the handover from the multicast service to the unicast service by receiving the DCI.
In one non-limiting embodiment, step S202 shown in fig. 2 may include the following steps: and if the new increased bit position in the downlink control information bears the switching indication information to indicate that switching is executed, determining to execute switching and monitoring the PDCCH scrambled by the unicast scheduling C-RNTI.
In this embodiment, the bit values at the positions of the newly added bits indicate different information. For example, the newly added bit is set to 0, and the UE determines that the current transmission mechanism is unchanged; the newly added bit is set to 1, the UE determines that the transmission mechanism is changed, and the UE performs switching from the multicast service to the unicast service.
In one non-limiting embodiment, step S202 shown in fig. 2 may include the following steps: determining the corresponding bit position in the bitmap or MAC CE of the downlink control information according to the self identification; and determining whether to execute switching according to the value of the corresponding bit position.
In this embodiment, the UE may receive, in advance, a bit position in a bitmap or an MAC CE corresponding to each user equipment sent by the base station. Therefore, after receiving the DCI or the MAC CE, the UE may first search for a bit position corresponding to its identifier, and then determine whether to perform switching from the multicast service to the unicast service according to a bit value at the bit position.
For example, if the corresponding bit position is set to 1, it indicates that the transmission mechanism conversion is required; if the corresponding bit position is set to 0, this indicates that no transport mechanism conversion is required.
Further, the switching of the UE from the multicast service to the unicast service in the embodiment of the present invention refers to: and the UE monitors the PDCCH scrambled by the unicast scheduling C-RNTI, or the UE switches to a preset part of bandwidth to monitor the PDCCH scrambled by the unicast scheduling C-RNTI.
Specifically, the preset partial bandwidth may be a BWP pre-specified by the base station, or may be a BWP pre-agreed by the communication protocol.
Further, the UE may identify the MAC CE with a new LCID, which is pre-configured by the base station.
Referring to fig. 3, an embodiment of the present invention further discloses a service switching indication apparatus, which is used at the base station side. The service switching indication device 30 may include:
a service type determining module 301, configured to determine a type of a current service and a type of a service to be switched;
a switching indication module 302, configured to indicate whether to perform switching to all user equipments through downlink control information if the type of the current service is a multicast service and the type of the service to be switched is a unicast service, or indicate, in the downlink control information, that an identifier of a user equipment that needs to perform switching is carried and send the identifier.
In the embodiment of the invention, when the base station needs to switch from the multi-broadcast service to the unicast service, the downlink control information indicates whether to execute the switching to all the user equipment, so that the user equipment can monitor the unicast service after receiving the indication, thereby avoiding the continuous monitoring and achieving the purpose of saving electricity; or, the base station may also carry the identifier of the user equipment that needs to perform the switching in the downlink control information, so that only part of the user equipment that needs to perform the switching monitors the unicast service, thereby avoiding all the user equipment from monitoring the unicast service, and reducing unnecessary power consumption of the user equipment.
For more contents of the operation principle and the operation mode of the service switching indication device 30, reference may be made to the related descriptions in fig. 1 to fig. 2, which are not described again here.
Referring to fig. 4, an embodiment of the present invention further discloses a service switching indication apparatus, which is used at a user equipment side. The service switching indication means 40 may include:
a receiving module 401, configured to receive downlink control information from a base station, where the base station indicates, through the downlink control information, whether to perform switching to all user equipments when the current service type is a multicast service and the service type to be switched is a unicast service, or carries, in the downlink control information, an identifier of a user equipment that needs to perform switching, and sends the identifier;
a switching determining module 402, configured to determine whether to perform switching from a multicast service to a unicast service according to the downlink control information.
For more contents of the operation principle and the operation mode of the service switching indication device 40, reference may be made to the related descriptions in fig. 1 to fig. 2, which are not described again here.
The embodiment of the present invention also discloses a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium, and when the computer program runs, the steps of the access control method shown in fig. 3 may be executed. The storage medium may include ROM, RAM, magnetic or optical disks, etc. The storage medium may further include a non-volatile memory (non-volatile) or a non-transitory memory (non-transient), and the like.
The embodiment of the invention also discloses user equipment which can comprise a memory and a processor, wherein the memory is stored with a computer program which can run on the processor. The processor, when running the computer program, may perform the steps of the access control method shown in fig. 2. The user equipment includes but is not limited to a mobile phone, a computer, a tablet computer and other terminal equipment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A method for indicating service switching is characterized by comprising the following steps:
determining the type of the current service and the type of the service to be switched;
if the type of the current service is multicast service and the type of the service to be switched is unicast service, indicating whether to execute switching to all user equipment or carrying the identification of the user equipment needing to execute switching in the downlink control information and sending the identification.
2. The method of claim 1, wherein the indicating whether to perform handover to all ues through downlink control information comprises:
and bearing switching indication information at the newly added bit position of the downlink control information and sending the switching indication information, wherein the switching indication information indicates whether to execute switching.
3. The method of claim 1, wherein the step of carrying, in the downlink control information, the identifier of the ue that needs to perform handover comprises:
and carrying the identifier of the user equipment needing to execute the switching in the bitmap or the MAC CE in the downlink control information and sending the identifier.
4. The method of claim 3, wherein before the downlink control information carries the identifier of the ue that needs to perform handover, the method further comprises:
and transmitting the bit positions in the bitmap or MAC CE corresponding to each user equipment to all the user equipment in a semi-static configuration mode or RRC signaling.
5. The method of claim 3, wherein before the downlink control information carries the identifier of the ue that needs to perform handover, the method further comprises:
and configuring new LCID for all user equipment so that the user equipment can identify the MAC CE carrying the identification of the user equipment needing to execute the switching by using the new LCID.
6. A method for switching services, comprising:
receiving downlink control information from a base station, wherein the base station indicates whether to execute switching to all user equipment or not through the downlink control information when the type of the current service is multicast service and the type of the service to be switched is unicast service, or the downlink control information carries an identifier of the user equipment needing to execute switching and sends the identifier out;
and determining whether to execute the switching from the multicast service to the unicast service according to the downlink control information.
7. The method of claim 6, wherein the determining whether to perform the switching from the multicast service to the unicast service according to the downlink control information comprises:
and if the new increased bit position in the downlink control information bears the switching indication information to indicate that switching is executed, determining to execute switching and monitoring the PDCCH scrambled by the unicast scheduling C-RNTI.
8. The method of claim 6, wherein the determining whether to perform the switching from the multicast service to the unicast service according to the downlink control information comprises:
determining the corresponding bit position in the bitmap or MAC CE of the downlink control information according to the self identification;
and determining whether to execute switching according to the value of the corresponding bit position.
9. The method of claim 8, further comprising:
if the switching is determined to be executed, monitoring a PDCCH scrambled by a unicast scheduling C-RNTI;
or if the switching is determined to be performed, switching to the PDCCH which is scrambled by the unicast scheduling C-RNTI in the preset partial bandwidth.
10. The method of claim 8, wherein before determining the bit position in the bitmap or MAC CE of the downlink control information according to the identifier of the ue, the method further comprises:
identifying the MAC CE with a new LCID, the new LCID being preconfigured by the base station.
11. A service switching indication device, comprising:
a service type determining module, configured to determine a type of a current service and a type of a service to be switched; and a switching indication module, configured to indicate whether to perform switching to all user equipments through downlink control information if the type of the current service is a multicast service and the type of the service to be switched is a unicast service, or carry, in the downlink control information, an identifier of a user equipment that needs to perform switching, and send the identifier.
12. A service switching apparatus, comprising:
a receiving module, configured to receive downlink control information from a base station, where the base station indicates, through the downlink control information, whether to perform switching to all user equipment when the current service type is a multicast service and the service type to be switched is a unicast service, or carries, in the downlink control information, an identifier of the user equipment that needs to perform switching, and sends the identifier;
and the switching determining module is used for determining whether to execute the switching from the multicast service to the unicast service according to the downlink control information.
13. A storage medium having a computer program stored thereon, wherein the computer program when executed by a processor performs the steps of the service switching indication method of any one of claims 1 to 5 or performs the steps of the service switching method of any one of claims 6 to 10.
14. A base station comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor executes the computer program to perform the steps of the traffic switching indication method according to any of claims 1 to 5.
15. A terminal comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the service switching method according to any of claims 6 to 10.
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