CN102833684B - A kind of multimedia broadcast multicast service transmission method, system and user equipment - Google Patents
A kind of multimedia broadcast multicast service transmission method, system and user equipment Download PDFInfo
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The present invention provides a kind of MBMS service transmission method, system and user equipmenies, which comprises the instruction information of carrier wave gives user terminal UE where network side transmission is used to indicate MBMS business；UE receives the MBMS business according to the instruction information.The present invention is sent to UE by the instruction information of carrier wave where being used to indicate MBMS business, UE carries out the reception of MBMS business according to the instruction information, when solving the carrier wave difference where the carrier wave and MBMS business that UE is resident or services, the problem of receiving MBMS business, transmission of the MBMS business in multicarrier environment is realized, the demand that UE receives MBMS business in multicarrier environment is met.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a Multimedia Broadcast Multicast Service (MBMS) Service transmission method, system, and user equipment.
Background
With the rapid development of the internet and the popularization of large-screen multifunctional mobile phones, a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferences, television broadcasts, video-on-demand, video advertisements, online education, interactive games, and the like, have emerged. These mobile data multimedia services and various high bandwidth multimedia services not only meet the ever-increasing service demands of mobile users, but also bring new service growth points for mobile operators. These mobile data multimedia services and various high bandwidth multimedia services require that multiple users can receive the same data at the same time, and compared with general data services, the mobile data multimedia services have the characteristics of large data volume, long duration, sensitive time delay and the like.
In order to effectively utilize mobile network resources, the third generation partnership Project (3 GPP) proposes Multimedia Broadcast Multicast Service (MBMS), which is a technology for transmitting data from one data source to a plurality of targets, and implements sharing of network (including core network and access network) resources and improves utilization of network resources (especially air interface resources). The MBMS service defined by 3GPP can not only implement multicast and broadcast of plain text low-rate message types, but also implement broadcast and multicast of high-speed multimedia services, provide various rich video, audio and multimedia services, conform to the trend of future mobile data development, and provide better service prospects for the development of third Generation (3rd Generation, 3G) digital communication.
Currently, MBMS service is introduced in Long Term Evolution (LTE) release 9(R9) system and optimized in LTE release 10 (R10). The MBMS is carried in the system and needs the common transmission of control signaling (also called MBMS control signaling) and user data (also called MBMS) for realization; the control signaling informs a receiving end of corresponding control parameters, such as a terminal, User Equipment (UE), and the like, and directs the receiving end to a corresponding location to receive the MBMS service (i.e., corresponding User data) that the receiving end is interested in. Such MBMS control signaling (control information including configuration information of MBMS service and the like) is transmitted through a Multicast Control Channel (MCCH) in the LTE system, and the MBMS service is transmitted through a Multicast Traffic Channel (MTCH).
The configuration parameters of the MCCH repetition period and the modification period are configured by the network side, and the network side sends the configuration parameters to the UE through a System information block13 (SIB 13) in a Broadcast Control Channel (BCCH); the UE can know the configuration parameters of the MCCH repetition period and the modification period by reading the SIB13 in the BCCH, and the UE can read the MCCH information at the corresponding location.
In the prior art, an MBMS control signaling and an MBMS service are transmitted in a multicast broadcast Single Frequency Network Area (MBSFN Area), and transmitting the control signaling and user data in the MBSFN Area is performed by using an MBSFN technology in units of cells or enbs, so that a UE can obtain a corresponding combining gain when receiving the control signaling and user data, and the MBSFN technology requires that each cell in the MBSFN Area transmits the same data content on the same time-Frequency resource, so that the resource of each cell needs to be uniformly scheduled and planned. Currently, a Multi-cell/Multicast Coordination Entity (MCE) network element is used to perform unified scheduling and planning of radio resources.
In the LTE system, a cell has only one uplink carrier and one downlink carrier. In a Long term evolution-advanced (LTE-a) phase, in order to improve transmission rates of uplink and downlink, the uplink and downlink of one LTE-a cell may be configured with multiple Component Carriers (CCs), the multiple CCs may be aggregated together to form a maximum transmission bandwidth of 100MHz, and a UE may perform data transceiving on one or multiple CCs (depending on the capability of the UE itself), which is called Carrier Aggregation (CA). Assuming that an LTE-a cell has multiple uplink and downlink component carriers, for an idle-mode UE in the cell, in order to simplify the behavior of the idle-mode UE and reduce the power consumption of the UE, the idle-mode UE always resides on one of the component carriers. However, after the UE enters the connected mode, in order to enable the UE to transmit and receive data at a higher rate, a component carrier activation process is required to manage carriers, so that the UE can perform data scheduling on multiple component carriers simultaneously.
In a CA scenario, multiple carriers may be deployed in the same geographic area. For a UE in radio resource Control (RRC Connected) mode, a Primary cell (Pcell) and one or more Secondary cells (scells) may be defined, and the Pcell and the Scell corresponding to the UE are collectively referred to as a Serving cell (Serving cell). A UE with MBMS and CA capabilities in 3GPP Rel-10 can receive MBMS services at least on the Pcell.
Fig. 1 is a flow diagram of MBMS service transmission; the first phase is a service announcement (service announcement), which is intended to send relevant information of the MBMS service, such as service profile, service parameters, service start time, etc., to the user; the second phase is Session Start; the third phase is MBMS service notification (MBMS notification); the fourth phase is Data transfer; the fifth phase is the task end (Session Stop).
The UE may be in Idle mode (RRC Idle) or RRC Connected for receiving the MBMS service; in order to reduce the system load, the MBMS service may be deployed on one component carrier or multiple component carriers.
The following problems exist in transmitting MBMS services in a multi-carrier environment: for idle mode UEs and UEs without CA capability can only reside on one CC, if MBMS is deployed on another CC, the UE may not be able to receive MBMS services; for the UE with limited CA capability, if the MBMS is deployed on a CC other than the CC aggregated by the UE, the UE may also not receive the MBMS service.
Disclosure of Invention
In view of the above, the present invention provides an MBMS transmission method, system and user equipment, which can receive an MBMS service in a multi-carrier environment.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a MBMS service transmission method, the method comprises:
the network side sends indication information for indicating the carrier where the MBMS is located to the UE;
and the UE receives the MBMS according to the indication information.
Further, the sending, by the network side, the indication information for indicating the carrier where the MBMS service is located to the UE is:
the network side sends one or more indication information including Physical Cell Identity (PCI) of MBMS carrier, frequency point information, bandwidth information and component carrier index information to the UE through MBMS announcement information or system information.
Wherein the system message is SIB3, and/or SIB 5.
Further, the sending, by the network side, the indication information for indicating the carrier where the MBMS service is located to the UE is: and the network side sends indication information for indicating the carrier where the MBMS is located on each carrier deployed in the system.
Further, the UE receives the MBMS service according to the indication information, where the receiving the MBMS service is:
when a serving cell of the UE contains a carrier where the MBMS is located, the UE directly receives the MBMS on the carrier where the MBMS is located;
and when the service cell of the UE does not contain the carrier where the MBMS is located, the UE turns to the cell of the carrier where the MBMS is located to receive the MBMS.
Further, the step of the UE turning to the carrier where the MBMS is located to receive the MBMS service is:
and when the UE is in an idle mode, the UE judges whether the MBMS carrier cell meets the cell reselection condition, and if so, the UE enters the MBMS carrier cell through the cell reselection process to receive the MBMS service.
Further, the step of the UE turning to the carrier where the MBMS is located to receive the MBMS service is:
when the UE is in a connection mode, the UE sends a request to a network side;
and after receiving the request, the network side judges whether the MBMS carrier cell meets the switching condition, if so, the network side sends an acceptance response to the UE, switches the UE to the MBMS carrier cell and receives the MBMS service.
Further, the UE sends a request that: the UE bears the request through RRC signaling; the requested content comprises one or more of a request indication, an MBMS service identification, an MBSFN area identification and an MBMS carrier indication.
Further, after determining whether the MBMS carrier cell satisfies the handover condition, the method further includes:
and when the MBMS carrier cell does not meet the switching condition, the network side sends a rejection response to the UE, and after receiving the rejection response, the UE sends a request again within the preset time to wait for switching to the MBMS carrier cell.
Further, after the request is sent again within the preset time and the handover to the MBMS carrier cell is waited, the method further includes: and when the number of times of sending the request by the UE exceeds the preset number of allowed requests, or the waiting time exceeds a preset request timer, stopping sending the request.
An MBMS service transmission system, the system comprising: a network side and a UE; wherein,
the network side is used for sending indication information for indicating the carrier where the MBMS is located to the UE;
and the UE is used for receiving the MBMS according to the indication information.
The network side further comprises an indication unit, which is used for sending one or more indication information including the PCI, the frequency point information, the bandwidth information and the component carrier index information of the MBMS carrier to the UE through the MBMS announcement information or the system information.
The UE is specifically used for directly receiving the MBMS on a carrier where the MBMS is located when the serving cell contains the carrier where the MBMS is located; and when the serving cell does not contain the carrier where the MBMS is located, the cell which turns to the carrier where the MBMS is located receives the MBMS.
Wherein the UE further comprises a selection unit, a request unit, and a receiving unit; wherein,
the selection unit is used for judging whether the MBMS carrier cell meets cell reselection conditions or not when the UE is in an idle mode, and if so, entering the MBMS carrier cell through a cell reselection process;
the request unit is used for the UE to be in a connection mode and sending a request to a network side; the receiving unit is also used for sending the request again in the preset time after receiving the rejection response returned by the network side, and waiting for switching to the MBMS carrier cell;
the receiving unit is used for receiving the carrier indication information of the MBMS and the response returned by the network side and receiving the MBMS;
the network side further comprises a response unit and a switching unit; wherein,
the response unit is used for judging whether the MBMS carrier cell meets the switching condition after receiving the request sent by the request unit, and if so, sending an acceptance response to the receiving unit; if not, sending a rejection response to the receiving unit;
the switching unit is used for switching the UE to an MBMS carrier cell.
Further, the request unit is further configured to stop sending the request when the number of times of sending the request exceeds a preset number of allowed requests, or the waiting time exceeds a preset request timer.
An MBMS service transmission user equipment, the user equipment comprising: a selection unit, a request unit, and a reception unit; wherein,
the selection unit is used for judging whether the MBMS carrier cell in the received indication information meets the cell reselection condition when the selection unit is in an idle mode, and if so, entering the MBMS carrier cell through the cell reselection process;
the request unit is used for sending a request to a network side when the mobile terminal is in a connection mode; the terminal is also used for sending the request again in the preset time after receiving the rejection response returned by the network side, and waiting for switching to the MBMS carrier cell;
the receiving unit is used for receiving the carrier indication information of the MBMS and the response returned by the network side and receiving the MBMS.
The request unit is further configured to stop sending the request when the number of times of sending the request exceeds a preset number of allowed requests, or the waiting time exceeds a preset request timer.
According to the invention, the indication information for indicating the carrier where the MBMS is located is sent to the UE, and the UE receives the MBMS according to the indication information, so that the problem of receiving the MBMS when the carrier where the UE resides or serves is different from the carrier where the MBMS is located is solved, the transmission of the MBMS in a multi-carrier environment is realized, and the requirement of the UE for receiving the MBMS in the multi-carrier environment is met.
Drawings
Fig. 1 is a schematic diagram of a transmission phase of a conventional MBMS service;
fig. 2 is a schematic diagram of an implementation flow of the MBMS service transmission method of the present invention;
fig. 3 is a schematic flow chart illustrating an implementation of a MBMS service transmission method according to a first embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating an implementation of a second embodiment of the MBMS service transmission method according to the present invention;
fig. 5 is a schematic diagram of the structure of the MBMS service transmission system according to the present invention;
fig. 6 is a schematic diagram of a structure of a user equipment for MBMS service transmission according to the present invention.
Detailed Description
The basic idea of the invention is as follows: a network side sends indication information for indicating a carrier where an MBMS service is located to User Equipment (UE); and the UE receives the MBMS according to the indication information.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 2 shows an implementation flow of the MBMS service transmission method of the present invention, and as shown in fig. 2, the method includes the following steps:
step 201, a network side sends indication information to a UE;
in this step, the indication information is used to indicate carrier information where the MBMS service is located, and may specifically include one or more of Physical Cell Identifier (PCI), frequency point information, bandwidth information, and component carrier index information of the MBMS carrier;
here, the Network side includes a Radio Access Network (RAN) and a core Network (CoreNetwork, CN);
the network side sending indication information can be sent through the MBMS notification information, that is, before the MBMS Service session starts, all users in the MBMS Service area are broadcasted by a Broadcast Multicast Service center (BM-SC); the UE may also send through a system message, specifically, an evolved node b (eNB) sends to all UEs in a cell under the eNB over an air interface (Uu); here, in order to ensure that all users or UEs can receive the indication information, the MBMS notification information or the system message is transmitted on all carriers deployed by the system, and preferably, the system message is SIB3 and/or SIB 5.
Step 202, the UE receives the MBMS service according to the indication information;
in this step, when the serving cell of the UE contains the carrier where the MBMS service is located, the UE directly receives the MBMS service on the carrier where the MBMS service is located; otherwise, the UE turns to the carrier where the MBMS is located to receive the MBMS service under the assistance of the network side.
Fig. 3 shows an implementation procedure of a first embodiment of the MBMS service transmission method of the present invention, in the first embodiment, a UE is in an idle mode, a component carrier where the UE resides is CC1, an MBMS service is deployed on one or more other CCs except CC1, and the UE receives or is interested in receiving the MBMS service; as shown in fig. 3, one embodiment includes the following steps:
step 301, a network side sends indication information for indicating a carrier where an MBMS service is located to a UE through MBMS notification information or a system message;
here, the network side sends MBMS notification information or a system message on all carriers, where the system message may specifically be SIB3 and/or SIB 5; the indication information is used for indicating carrier information where the MBMS service is located, and may specifically include one or more of PCI, frequency point information, bandwidth information, and component carrier index information of the MBMS carrier;
step 302, the UE receives and reads the indication information;
step 303, the UE determines whether the MBMS carrier cell meets a cell reselection condition; if yes, go to step 304, otherwise go to step 305;
specifically, in this step, the UE first determines whether the MBMS carrier cell meets a cell reselection condition, that is, performs measurement sequencing on neighboring cells according to an S criterion (S-criterion) and an R criterion (R-criterion); when the MBMS carrier cell meets the cell reselection condition, the MBMS carrier cell is taken as the highest priority to carry out cell reselection;
step 304, the UE enters an MBMS carrier cell through a cell reselection process, receives an MBMS service in the MBMS carrier cell, and the current processing flow is finished;
here, the specific cell reselection process refers to that when the MBMS carrier cell satisfies the cell reselection condition, the MBMS service that the UE is interested in receiving is considered, so that the carrier cell providing the MBMS service may be first taken as the cell of the highest priority, and if there are a plurality of such cells, the carrier cell providing the MBMS service that the UE is interested in receiving is further taken as the cell of the highest priority, or the priority is determined according to the ranking of the MBMS carrier indexes, for example, the lowest index value or the highest index value is taken as the highest priority, so that the UE may reselect the MBMS carrier cell;
and after entering the MBMS carrier cell, the UE receives the system message and the MCCH message and then receives the MBMS service according to the messages.
Step 305, the UE resides in the original cell or other non-MBMS carrier cell, and the current processing flow is finished.
Fig. 4 shows a flow of implementing the second embodiment of the MBMS service transmission method of the present invention, in the second embodiment, the UE is in a connected mode and has no CA capability, the UE receives or is interested in receiving the MBMS service on the component carrier CC1, the MBMS service is deployed on one or more other CCs than the CC 1; as shown in fig. 4, the second embodiment comprises the following steps:
step 401, a network side sends indication information for indicating a carrier where an MBMS service is located to a UE through MBMS notification information or a system message;
here, the network side sends MBMS notification information or a system message on all carriers, where the system message may specifically be SIB3 and/or SIB 5; the indication information is used for indicating carrier information where the MBMS service is located, and may specifically include one or more of PCI, frequency point information, bandwidth information, and component carrier index information of the MBMS carrier;
step 402, the UE receives and reads the indication information;
specifically, the UE reads the MBMS notification message or the system message on CC1 to obtain the indication information.
Step 403, the UE sends a request to the network side to request to receive the MBMS service;
the request may be carried in RRC signaling, where the RRC signaling may be RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment complete information, connection establishment complete information, cell update information, random access request information, measurement report, or dedicated signaling;
the requested content comprises one or more of request indication, MBMS service identification, MBSFN area identification and MBMS carrier indication.
Step 404, after receiving the request sent by the UE, the network side determines whether the MBMS carrier cell meets the handover condition, if yes, then step 405 is executed, otherwise step 407 is executed;
specifically, the network side comprehensively considers the factors such as link signal quality, Radio Resource Management (RRM) algorithm, cell load, and the like, and determines whether the MBMS carrier cell can be a target cell of the UE.
Step 405, the network side sends an acceptance response to the UE;
when the network side judges that the MBMS carrier cell can be used as a target cell of the UE, the network side sends acceptance response information to the UE; the accept response message may be carried by RRC signaling, where the RRC signaling may be existing RRC signaling or dedicated RRC signaling.
Step 406, the network side switches the UE to the MBMS carrier cell, and the UE receives the MBMS service in the MBMS carrier cell, and the current processing flow is ended;
here, UE releases RRC connection in original cell, enters target MBMS carrier cell, and receives MBMS service in the MBMS carrier cell; the UE may be in idle mode or connected mode in the target MBMS carrier cell.
Step 407, the network side sends a rejection response to the UE;
when the network side judges that the MBMS carrier cell can not be used as a target cell of the UE, the network side sends rejection response information to the UE; the reject response information may be carried through RRC signaling, where the RRC signaling may be existing RRC signaling or dedicated RRC signaling.
Step 408, the UE continues to send a request to the network side on CC1, waits for switching to the MBMS carrier cell, and ends the current processing flow;
here, the UE continuing to send the request means that the UE waits for a period of time after receiving a response rejection message sent by the network side, and then sends the request again; the time for sending the request by the UE can be randomly determined within a period of time, and if the network side defines a time t, the UE randomly selects a time value to send the request within (0, t);
further, the UE may send a plurality of requests, the network side may preset an allowed request number N or a request timer T to limit the number of times the UE sends the request, and when the request number N or the waiting time is greater than or equal to T and the UE does not yet enter the target MBMS carrier cell, the UE stops sending the request.
It should be understood that, when the UE is a UE with limited CA capability, for example, a serving cell of the UE includes carriers CC1 and CC2, the MBMS service is deployed on one or more other CCs than CC1 and CC2, the UE is in a connected mode, and receives or is interested in receiving the MBMS service, at this time, in the process of MBMS service transmission, except when performing step 402, the UE may read the MBMS notification message or the system message on CC1 or CC2 to obtain the indication information, and other processing procedures are the same as above, and are not described again.
Fig. 5 shows a schematic structure of the MBMS service transmission system of the present invention, and as shown in fig. 5, the system includes: a network side and a UE; wherein,
the network side is used for sending indication information for indicating the carrier where the MBMS is located to the UE;
and the UE is used for receiving the MBMS according to the indication information.
Preferably, the network side further includes an indication unit 50, configured to send, to the UE, indication information including one or more of PCI of the MBMS carrier, frequency point information, bandwidth information, and index information of the component carrier through MBMS notification information or a system message; the system message may specifically be SIB3 and/or SIB 5.
Further, the UE is specifically configured to, when a serving cell includes a carrier where an MBMS service is located, directly receive the MBMS service on the carrier where the MBMS service is located; and when the serving cell does not contain the carrier where the MBMS is located, the cell which turns to the carrier where the MBMS is located receives the MBMS.
Preferably, the UE further comprises a selecting unit 53, a requesting unit 54, and a receiving unit 55; wherein,
the selecting unit 53 is configured to, when the UE is in the idle mode, determine whether the MBMS carrier cell meets a cell reselection condition, and if so, enter the MBMS carrier cell through a cell reselection process; specifically, firstly, judging whether an MBMS carrier cell meets a cell reselection condition, namely, measuring and sequencing adjacent cells according to an S criterion (S-criterion) and an R criterion (R-criterion); when the MBMS carrier cell meets the cell reselection condition, the MBMS carrier cell is taken as the highest priority to carry out cell reselection;
the request unit 54 is configured to send a request to the network side when the UE is in the connected mode; the receiving unit 55 is further configured to send a request again within a preset time after receiving a rejection response returned by the network side, and wait for switching to the MBMS carrier cell; here, the request may be carried in RRC signaling, and the RRC signaling may be RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment complete information, connection establishment complete information, cell update information, random access request information, measurement report, or dedicated signaling; the requested content comprises one or more of request indication, MBMS service identification, MBSFN area identification and MBMS carrier indication;
the receiving unit 55 is configured to receive a response returned by the network side, and receive the MBMS service;
the network side further comprises a response unit 52, a switching unit 51; wherein,
the response unit 52 is configured to determine whether the MBMS carrier cell meets the handover condition after receiving the request sent by the request unit 54, and if so, send an acceptance response to the receiving unit 55; if not, sending a rejection response to the receiving unit 55; specifically, the network side comprehensively considers the factors such as link signal quality, RRM algorithm and cell load, and judges whether the MBMS carrier cell can be used as the target cell of the UE; the accept/reject response message may be carried by RRC signaling, where the RRC signaling may be existing RRC signaling or dedicated RRC signaling.
The switching unit 51 is configured to switch the UE to an MBMS carrier cell;
further, the request unit 54 is further configured to stop sending the request when the number of times of sending the request exceeds a preset number of allowed requests, or the waiting time exceeds a preset request timer; here, the requesting unit 54 may send the request multiple times, and the network side may set the number of allowed requests N or the request timer T in advance to limit the number of times the UE sends the request, and stop sending the request when the number of requests N or the waiting time ≧ T still does not enter the target MBMS carrier cell.
Fig. 6 shows a structure of a user equipment for MBMS service transmission according to the present invention, and as shown in fig. 6, the user equipment includes: a selection unit 61, a request unit 62, and a reception unit 63; wherein,
the selecting unit 61 is configured to, when the MBMS ue is in the idle mode, determine whether the MBMS carrier cell in the received indication information meets a cell reselection condition, and if so, enter the MBMS carrier cell through a cell reselection process; specifically, firstly, judging whether an MBMS carrier cell meets a cell reselection condition, namely, measuring and sequencing adjacent cells according to an S criterion (S-criterion) and an R criterion (R-criterion); when the MBMS carrier cell meets the cell reselection condition, the MBMS carrier cell is taken as the highest priority to carry out cell reselection;
the request unit 62 is configured to send a request to a network side when the network side is in the connection mode; the terminal is also used for sending the request again in the preset time after receiving the rejection response returned by the network side, and waiting for switching to the MBMS carrier cell; here, the request may be carried in RRC signaling, and the RRC signaling may be RRC connection reconfiguration complete information, RRC connection reestablishment request information, RRC connection reestablishment complete information, connection establishment complete information, cell update information, random access request information, measurement report, or dedicated signaling; the requested content comprises one or more of request indication, MBMS service identification, MBSFN area identification and MBMS carrier indication;
the receiving unit 63 is configured to receive a response returned by the network side, and receive the MBMS service.
Further, the request unit 62 is further configured to stop sending the request when the number of times of sending the request exceeds a preset number of allowed requests, or the waiting time exceeds a preset request timer; here, the requesting unit 62 may send the request multiple times, and the network side may set the number of allowed requests N or the request timer T in advance to limit the number of times the UE sends the request, and stop sending the request when the number of requests N or the waiting time ≧ T still does not enter the target MBMS carrier cell.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (15)
1. A transmission method of multimedia broadcast multicast MBMS service is characterized in that the method comprises the following steps:
a network side sends indication information for indicating a carrier where an MBMS service is located to User Equipment (UE); the network side sends one or more indication information of Physical Cell Identification (PCI), frequency point information, bandwidth information and component carrier index information containing MBMS carriers to the UE through MBMS announcement information or system information; the MBMS announcement information or the system message is sent on all carriers deployed by the system;
and the UE receives the MBMS according to the indication information.
2. The method of claim 1, wherein the system message is a system message block SIB3, and/or SIB 5.
3. The method of claim 1, wherein the sending, by the network side, the indication information for indicating the carrier where the MBMS service is located to the UE is: and the network side sends indication information for indicating the carrier where the MBMS is located on each carrier deployed in the system.
4. The method of claim 1, wherein the receiving, by the UE, the MBMS service according to the indication information is:
when a serving cell of the UE contains a carrier where the MBMS is located, the UE directly receives the MBMS on the carrier where the MBMS is located;
and when the service cell of the UE does not contain the carrier where the MBMS is located, the UE turns to the cell of the carrier where the MBMS is located to receive the MBMS.
5. The method of claim 4, wherein the step of the UE turning to the carrier where the MBMS is located to receive the MBMS service includes:
and when the UE is in an idle mode, the UE judges whether the MBMS carrier cell meets the cell reselection condition, and if so, the UE enters the MBMS carrier cell through the cell reselection process to receive the MBMS service.
6. The method of claim 4, wherein the step of the UE turning to the carrier where the MBMS is located to receive the MBMS service includes:
when the UE is in a connection mode, the UE sends a request to a network side;
and after receiving the request, the network side judges whether the MBMS carrier cell meets the switching condition, if so, the network side sends an acceptance response to the UE, switches the UE to the MBMS carrier cell and receives the MBMS service.
7. The method of claim 6, wherein the UE sends the request as: the UE bears the request through RRC signaling; the requested content comprises one or more of a request indication, an MBMS service identification, an MBSFN area identification and an MBMS carrier indication.
8. The method of claim 6, wherein after determining whether the MBMS carrier cell satisfies the handover condition, the method further comprises:
and when the MBMS carrier cell does not meet the switching condition, the network side sends a rejection response to the UE, and after receiving the rejection response, the UE sends a request again within the preset time to wait for switching to the MBMS carrier cell.
9. The method of claim 8, wherein the retransmitting the request within a preset time period after waiting for the handover to the MBMS carrier cell, the method further comprises: and when the number of times of sending the request by the UE exceeds the preset number of allowed requests, or the waiting time exceeds a preset request timer, stopping sending the request.
10. An MBMS service transmission system, comprising: a network side and a UE; wherein,
the network side is used for sending indication information for indicating the carrier where the MBMS is located to the UE; the network side further comprises an indication unit, which is used for sending one or more indication information including PCI, frequency point information, bandwidth information and component carrier index information of the MBMS carrier to the UE through MBMS announcement information or system information; the MBMS announcement information or the system message is sent on all carriers deployed by the system;
and the UE is used for receiving the MBMS according to the indication information.
11. The system according to claim 10, wherein the UE is specifically configured to receive the MBMS service directly on a carrier where the MBMS service is located when a serving cell includes the carrier where the MBMS service is located; and when the serving cell does not contain the carrier where the MBMS is located, the cell which turns to the carrier where the MBMS is located receives the MBMS.
12. The system of claim 11, wherein the UE further comprises a selecting unit, a requesting unit, and a receiving unit; wherein,
the selection unit is used for judging whether the MBMS carrier cell meets cell reselection conditions or not when the UE is in an idle mode, and if so, entering the MBMS carrier cell through a cell reselection process;
the request unit is used for the UE to be in a connection mode and sending a request to a network side; the receiving unit is also used for sending the request again in the preset time after receiving the rejection response returned by the network side, and waiting for switching to the MBMS carrier cell;
the receiving unit is used for receiving the carrier indication information of the MBMS and the response returned by the network side and receiving the MBMS;
the network side further comprises a response unit and a switching unit; wherein,
the response unit is used for judging whether the MBMS carrier cell meets the switching condition after receiving the request sent by the request unit, and if so, sending an acceptance response to the receiving unit; if not, sending a rejection response to the receiving unit;
the switching unit is used for switching the UE to an MBMS carrier cell.
13. The system of claim 12, wherein the requesting unit is further configured to stop sending the request when the number of sending the request exceeds a preset number of allowed requests or the waiting time exceeds a preset request timer.
14. An MBMS service transmission user equipment, wherein the user equipment comprises: a selection unit, a request unit, and a reception unit; wherein,
the selection unit is used for judging whether the MBMS carrier cell in the received indication information meets the cell reselection condition when the selection unit is in an idle mode, and if so, entering the MBMS carrier cell through the cell reselection process; when the MBMS carrier cell meets the cell reselection condition, the MBMS carrier cell is taken as the highest priority to carry out cell reselection; the indication information is one or more of Physical Cell Identification (PCI), frequency point information, bandwidth information and component carrier index information which indicate a carrier where the MBMS is located and contain the MBMS carrier; the indication information is sent by the network side through MBMS announcement information or system information; the MBMS announcement information or the system message is sent on all carriers deployed by the system;
the request unit is used for sending a request to a network side when the mobile terminal is in a connection mode; the terminal is also used for sending the request again in the preset time after receiving the rejection response returned by the network side, and waiting for switching to the MBMS carrier cell;
the receiving unit is used for receiving the carrier indication information of the MBMS and the response returned by the network side and receiving the MBMS.
15. The UE of claim 14, wherein the requesting unit is further configured to stop sending the request when the number of sending the request exceeds a preset number of allowed requests or the waiting time exceeds a preset request timer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110164457.2A CN102833684B (en) | 2011-06-17 | 2011-06-17 | A kind of multimedia broadcast multicast service transmission method, system and user equipment |
| PCT/CN2011/081280 WO2012171293A1 (en) | 2011-06-17 | 2011-10-25 | Method, system and user equipment for transmitting multimedia broadcast and multicast service |
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| CN201110164457.2A CN102833684B (en) | 2011-06-17 | 2011-06-17 | A kind of multimedia broadcast multicast service transmission method, system and user equipment |
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| CN105519191B (en) * | 2013-05-22 | 2019-05-03 | 华为技术有限公司 | A kind of residence reselecting and a kind of terminal |
| WO2015046939A1 (en) * | 2013-09-26 | 2015-04-02 | Lg Electronics Inc. | Method and apparatus for transmitting interest indication for group communication in wireless communication system |
| CN106900033B (en) * | 2015-12-17 | 2020-02-21 | 中国电信股份有限公司 | Carrier reselection method and system and flexible bandwidth terminal |
| CN107734463B (en) * | 2016-08-12 | 2019-12-20 | 电信科学技术研究院 | Method for receiving multicast service, method and device for sending multicast service |
| EP4044631A4 (en) * | 2020-01-02 | 2022-10-26 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information indication method and apparatus, terminal device, and network device |
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| CN101262635A (en) * | 2007-03-09 | 2008-09-10 | 中兴通讯股份有限公司 | A method for enhancing MBMS service in multi-carrier cell |
| CN101374252A (en) * | 2007-08-21 | 2009-02-25 | 中国移动通信集团公司 | Terminal feedback method, counting method and apparatus based on MBMS special carrier system |
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| CN102083004B (en) * | 2010-02-26 | 2014-04-02 | 电信科学技术研究院 | Method and device for receiving and dispatching traffic data of multimedia broadcast\multicast service |
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| CN101262635A (en) * | 2007-03-09 | 2008-09-10 | 中兴通讯股份有限公司 | A method for enhancing MBMS service in multi-carrier cell |
| CN101374252A (en) * | 2007-08-21 | 2009-02-25 | 中国移动通信集团公司 | Terminal feedback method, counting method and apparatus based on MBMS special carrier system |
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