CN107615840B

CN107615840B - Data transmission method and device

Info

Publication number: CN107615840B
Application number: CN201580080085.1A
Authority: CN
Inventors: 黄曲芳; 曾清海
Original assignee: Beijing Peihong Wangzhi Technology Co ltd
Current assignee: Beijing Peihong Wangzhi Technology Co ltd; Shenzhen Shangge Intellectual Property Service Co ltd
Priority date: 2015-05-19
Filing date: 2015-05-19
Publication date: 2020-06-02
Anticipated expiration: 2035-05-19
Also published as: WO2016183800A1; CN107615840A

Abstract

The embodiment of the invention provides a data transmission method and a device, wherein a first message is sent to UE, the first message comprises a first corresponding relation, a second corresponding relation is generated according to MBMS data to be sent in a first scheduling period, the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be sent in the first scheduling period and an LCH ID, and the second corresponding relation and the MBMS data to be sent are sent to the UE through an MCH. Thus, the utilization rate of radio resources is improved.

Description

Data transmission method and device

Technical Field

The present invention relates to communications technologies, and in particular, to a data transmission method and apparatus.

Background

In a Long Term Evolution (LTE) system, a Multimedia Broadcast Multicast Service (MBMS) is transmitted using a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). If a certain area uses MBSFN to transmit MBMS, multiple Evolved Node bs (enbs) in the area simultaneously use the same radio resource to transmit the same data block to a User Equipment (UE), and the UE can receive signals from multiple enbs to superimpose the signals, thereby improving signal-to-noise ratio and transmission efficiency.

In the process that multiple enbs transmit the same data block to a UE by using the same radio resource, the enbs transmit Service data through a Multicast Channel (MCH), where each MCH corresponds to a group of MBSFN subframes, each MCH can carry 32 MBMS at most, each MCH can only use one Modulation and Coding Scheme (MCS), and different MCSs can be used to affect the Quality of Service (QoS) of the MBMS, and when the number of MBMS exceeds 32 or the QoS requirements of the MBMS are different, multiple-cell/Multicast Coordination Entity (MCE) needs to configure multiple MCHs to meet the number of MBMS or the QoS requirements of the MBMS.

However, for the situations of high MBMS burstiness, low average MBMS data rate, different QoS requirements of MBMS, etc., only a small number of MBMS have data transmission and a large number of MBSFN subframes are in an idle state in the same time, so that the utilization rate of radio resources is not high.

Disclosure of Invention

The embodiment of the invention provides a data transmission method and a data transmission device, which are used for improving the utilization rate of wireless resources.

In a first aspect, an embodiment of the present invention provides a data transmission method, including:

a base station sends first information to UE, wherein the first information comprises a first corresponding relation, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service single frequency network (MBSFN) subframe;

the base station generates a second corresponding relation according to data of a Multimedia Broadcast Multicast Service (MBMS) to be sent in a first scheduling period, wherein the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be sent in the first scheduling period and a logical channel identifier (LCH ID), and the first scheduling period is the current scheduling period;

and the base station sends the second corresponding relation and the MBMS data to be sent to the UE through the MCH.

With reference to the first aspect, in a first possible implementation manner of the first aspect,

the first information also comprises a service list;

the base station generates a second corresponding relation according to the data of the multimedia broadcast multicast service MBMS to be sent in the first scheduling period, including:

and the base station generates the second corresponding relation according to the sequence of the service list of the service identifier of the MBMS to be sent in the first information in the first scheduling period.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, before the sending, by the base station, the second corresponding relationship and the MBMS data to be sent to the UE through the MCH, the method further includes:

the base station encapsulates the second corresponding relation in a first media access control message MAC CE; or,

and the base station encapsulates the second corresponding relation in MCH scheduling information MSI.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the first MAC CE is carried in a first MBSFN subframe of a first scheduling period of the MCH;

or,

and the first MAC CE is carried in the last MBSFN subframe of a third scheduling period of the MCH, wherein the third scheduling period is the last scheduling period of the first scheduling period.

With reference to the first aspect or any one possible implementation manner of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:

the base station determines whether to send a third corresponding relationship to the UE according to whether the number of MBMS data to be sent or the type of MBMS is the same as the first scheduling period, where the third corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent and an LCH ID in the second scheduling period, and the second scheduling period is a next scheduling period of the first scheduling period.

With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the determining, by the base station, whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period includes:

if the number of the MBMS data to be transmitted in the second scheduling period or the type of the MBMS is different from the first scheduling period, the base station generates the third corresponding relationship according to the MBMS data to be transmitted in the second scheduling period, and transmits the third corresponding relationship to the UE;

and if the quantity of the MBMS data to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period, the base station does not send the third corresponding relation to the UE.

With reference to the first aspect or any one possible implementation manner of the first possible implementation manner to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the method further includes:

and the base station sends a fourth corresponding relation to the UE, wherein the fourth corresponding relation is the corresponding relation between the MCH and the subframe on the special carrier.

With reference to the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the fourth corresponding relationship is represented by a bitmap.

In a second aspect, an embodiment of the present invention provides a data transmission method, including:

user Equipment (UE) receives first information sent by a base station, wherein the first information comprises a first corresponding relation, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service (MBSFN) subframe;

the UE receives a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is the current scheduling period;

the UE acquires the LCH ID corresponding to the MBMS to be received according to the second corresponding relation;

and the UE receives the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the receiving, by the UE, data of the to-be-received MBMS in an MBSFN subframe in which an LCH ID corresponding to the to-be-received MBMS is located includes:

the UE acquires an MBSFN subframe where an LCH ID corresponding to the MBMS to be received is located;

and the UE acquires the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the method further includes:

the UE receives a fourth corresponding relation sent by the base station, wherein the fourth corresponding relation is the corresponding relation between the MCH and a subframe on a special carrier;

the UE acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located comprises the following steps:

and the UE acquires the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe.

In a third aspect, an embodiment of the present invention provides a data transmission apparatus, including:

the device comprises a sending module, a receiving module and a sending module, wherein the sending module is used for sending first information to UE, the first information comprises a first corresponding relation, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service (MBSFN) subframe;

a processing module, configured to generate a second correspondence according to data of a multimedia broadcast multicast service MBMS to be sent in a first scheduling period, where the second correspondence is a correspondence between a service identifier of the MBMS to be sent in the first scheduling period and a logical channel identifier LCH ID, and the first scheduling period is a current scheduling period;

the sending module is further configured to send the second corresponding relationship and the MBMS data to be sent to the UE through the MCH.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the first information further includes a service list;

the processing module is specifically configured to generate the second correspondence according to an order of a service list of the service identifier of the MBMS to be sent in the first scheduling period in the first information.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the sending module is further configured to encapsulate the second correspondence relationship in a first media access control message MAC CE; or, the second corresponding relation is encapsulated in MCH scheduling information MSI.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the first MAC CE is carried in a first MBSFN subframe of a first scheduling period of the MCH;

or,

With reference to the third aspect or any one of the first possible implementation manner to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the processing module is further configured to determine whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent in a second scheduling period or the type of the MBMS is the same as that in the first scheduling period, where the third corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent in the second scheduling period and an LCH ID, and the second scheduling period is a next scheduling period of the first scheduling period.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the processing module is specifically configured to, if the number of MBMS data to be sent in the second scheduling period or the type of the MBMS is different from that in the first scheduling period, generate, by the base station, the third corresponding relationship according to the MBMS data to be sent in the second scheduling period, and send the third corresponding relationship to the UE; and if the quantity of the MBMS data to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period, the base station does not send the third corresponding relation to the UE.

With reference to the third aspect or any possible implementation manner of the first possible implementation manner to the fifth possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, the sending module is further configured to send a fourth corresponding relationship to the UE, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier.

With reference to the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the fourth corresponding relationship is represented by a bitmap.

In a fourth aspect, an embodiment of the present invention provides a data transmission apparatus, including:

the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving first information sent by a base station, the first information comprises a first corresponding relation, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service (MBSFN) subframe; receiving a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is a corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is a current scheduling period;

a processing module, configured to obtain, according to the second correspondence, an LCH ID corresponding to the MBMS to be received;

the receiving module is further configured to receive the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the receiving module is specifically configured to acquire an MBSFN subframe in which an LCH ID corresponding to the MBMS to be received is located; and acquiring the data of the MBMS to be received in the MBSFN subframe where the LCHID corresponding to the MBMS to be received is located.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the receiving module is further configured to receive a fourth corresponding relationship sent by the base station, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier; and acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe.

According to the data transmission method and device provided by the embodiment of the invention, the base station sends first information to the UE, the first information comprises a first corresponding relation, the base station generates a second corresponding relation according to the MBMS data to be sent in the first scheduling period, the second corresponding relation is the corresponding relation between the service identifier of the MBMS to be sent in the first scheduling period and the LCH ID, and the base station sends the second corresponding relation and the MBMS data to be sent to the UE through the MCH. In each scheduling period, the corresponding relation between the MBMS service identifier and the LCH ID is dynamically configured according to the MBMS to be sent in the scheduling period, that is, the corresponding relation between the MBMS and the LCH ID is configured only when the MBMS has data to be sent, and in each scheduling period, the LCH ID is fully utilized, so that the utilization rate of MBSFN subframes is improved, the number of MCHs configured is reduced, the number of MBSFN subframes configured by each MCH is also reduced, and the utilization rate of wireless resources is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a system architecture diagram of the present invention;

FIG. 2 is a flowchart illustrating a data transmission method according to a first embodiment of the present invention;

FIG. 3 is a diagram illustrating a first mapping relationship between an MCH and a subframe according to the present invention;

FIG. 4 is a diagram illustrating a second mapping relationship between an MCH and a subframe according to the present invention;

FIG. 5 is a third diagram illustrating a mapping relationship between an MCH and a subframe according to the present invention;

FIG. 6 is a flowchart illustrating a second data transmission method according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to a first embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a third data transmission apparatus according to the present invention;

fig. 10 is a schematic structural diagram of a fourth data transmission apparatus according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic diagram of a system architecture of the present invention, and as shown in fig. 1, the system of the present invention includes a data source, a Broadcast Multicast Service Center (BM-SC), an MBMS Gateway (MBMS-Gateway, MBMS-GW), a Mobility Management Entity (MME), a Multi-cell/Multicast Coordination Entity (MCE), an eNB1, an. After an MBMS data packet is transmitted from a data source to a BM-SC, the BM-SC shapes and adds a time stamp to the data packet, the processed data packet is transmitted to an MBMS-GW, the MBMS-GW transmits the data packet to all eNBs in one or more MBSFN areas (areas) through IP multicast, and then the data packet is transmitted to UE through a wireless channel by the eNBs. The MCE determines the length of a scheduling period, the MBSFN subframe is divided into a plurality of scheduling periods according to the length of the scheduling period, the eNB schedules the transmission of the data packets by taking the scheduling periods as granularity, and specifically, the eNB determines the scheduling period in which each data packet is transmitted according to a timestamp added to each data packet by the BM-SC.

In order to improve the utilization rate of wireless resources, in each scheduling period, an eNB dynamically configures the corresponding relation between a service identifier and a Logical channel identifier (LCH ID) of an MBMS according to MBMS data to be sent in the scheduling period, namely, the corresponding relation between the service identifier and the LCHID of the MBMS is configured only when the MBMS has data to be sent, a plurality of MBMS data can be carried in the same MBSFN subframe, the Logical channel identifiers are used for distinguishing different MBMS data in the same MBSFN subframe, and in one scheduling period, the service identifiers and the LCH ID of the MBMS are in one-to-one correspondence. Because LCH ID is fully utilized in each scheduling period, the utilization rate of MBSFN subframes is improved, thereby reducing the quantity of MCH configuration, reducing the quantity of MBSFN subframes configured by each MCH, and improving the utilization rate of radio resources.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a schematic flow chart of a first embodiment of a data transmission method according to the present invention, as shown in fig. 2, the present embodiment is executed by a base station, and the method of the present embodiment is as follows:

s201: and the base station sends first information to the UE, wherein the first information comprises the first corresponding relation.

Wherein, the first corresponding relation is the corresponding relation between the MCH and the MBSFN subframe.

The MCE configures one or more MCHs for the base station, configures an MBSFN subframe corresponding to the MCHs, and the base station carries a correspondence between the MCHs and the MBSFN subframe in first information to send the first information to the UE, where the first information may be a Multicast Control Channel (MCCH) message.

And the UE receives the first information at the position of the first information indicated in the system broadcast message and acquires the first corresponding relation.

S202: and the base station generates a second corresponding relation according to the MBMS data to be sent in the first scheduling period.

The second correspondence is the correspondence between the service identifier of the MBMS to be transmitted and the LCH ID in the first scheduling period.

Wherein the first scheduling period is a current scheduling period.

The base station can generate a second corresponding relation according to the MBMS data to be sent in the current scheduling period in a third scheduling period; or in the first scheduling period, a second corresponding relationship may be generated according to MBMS data to be transmitted in the first scheduling period. That is, the base station can know in advance the MBMS to be transmitted in each scheduling period, and as to which scheduling period specifically generates the second corresponding relationship, the present invention is not limited, and the third scheduling period is the previous scheduling period of the first scheduling period.

The service identity may comprise at least one of the following identities: a Temporary Mobile Group Identity (TMGI), Session ID, or other Identity, which is not limited in this respect.

That is, the second corresponding relationship is dynamically generated according to the data condition of the MBMS to be transmitted in the first scheduling period, and if the MBMS to be transmitted in the first scheduling period is different, the second corresponding relationship is also different, and only when there is data to be transmitted in the MBMS, the LCH ID is occupied, that is, the corresponding relationship between the service identifier of the MBMS to be transmitted and the LCH ID is established. Thus, different MBMS may correspond to the same LCH ID in different scheduling periods.

For example: in the first scheduling period, data is transmitted to MBMS1, MBMS3, MBMS5, MBMS6, and MBMS7, the service identifiers corresponding to MBMS1, MBMS3, MBMS5, MBMS6, and MBMS7 are Session 1, Session3, Session5, Session6, and Session7, respectively, and the second correspondence established is shown in table 1:

TABLE 1 second correspondences

In the second scheduling period, data is transmitted to MBMS1, MBMS4, MBMS5, MBMS7, and MBMS8, the service identifiers corresponding to MBMS1, MBMS4, MBMS5, MBMS7, and MBMS8 are Session 1, Session4, Session5, Session7, and Session8, respectively, and the second correspondence established is shown in table 2:

TABLE 2 second correspondences

Service identification	Logical channel identification
		Session
1	LCH 1
		Session 4	LCH 2
Session 5	LCH 3
		Session 7	LCH 4
Session 8	LCH 5

As can be seen from tables 1 and 2, the LCH ID is only occupied when the MBMS has data to transmit. Different MBMS may correspond to the same LCH ID in different scheduling periods. When the MBMS to be transmitted changes, the correspondence between the service identifier of the MBMS and the LCH ID also changes. Therefore, the MBSFN subframe is fully utilized, the number of the MBSFN subframes configured by the MCH is reduced, and the utilization rate of radio resources is improved. For example: there are 64 MBMS, the business label of each MBMS corresponds to an LCH ID, adopt the method of the prior art, because each MCH can only bear 32 MBMS at most, need dispose two MCH at least, MCH1 and MCH2 separately, Session 1 corresponds to LCH ID1, Session2 corresponds to LCH ID2, Session3 corresponds to LCH ID3, … … Session32 corresponds to LCH ID32, Session33 corresponds to LCH ID1, Session 34 corresponds to LCH 2, Session35 corresponds to LCH ID3, MCH … … Session64 corresponds to LCH ID32, when only there are data transmissions of Session 1 and Session33, need to send the data of Session 1 at MCH1, send the data of HID2 at MCH 53933, the rest MBSFN in MCH1 and 2 are in idle state; by adopting the scheme of the invention, the corresponding relation between the service identifier of the MBMS and the LCH ID is generated according to the data of the MBMS to be sent in the scheduling period, when only Session 1 and Session33 have data to send, the corresponding relation between Session 1 and LCH ID1 is generated, and the corresponding relation between Session33 and LCH ID2 can send the data of Session 1 and Session33 in one MCH, thus improving the utilization rate of the LCH ID and the utilization rate of MBSFN subframes, thereby reducing the number of the configured MCHs, reducing the number of subframes configured by each MCH and improving the utilization rate of MBSFN resources.

The first information usually further includes a service list, where the service list is a list storing service identifiers, and when the second correspondence is generated, one possible implementation manner is as follows: and the base station generates the MBMS service identification to be sent in the first scheduling period according to the sequence of the service list in the first information.

For example: the sequence of the service list is as follows: session 1, Session2, Session3, Session4, Session5, Session6, Session7, Session8, and Session 9.

The service identifiers of the MBMS to be transmitted in the first scheduling period are respectively: if Session 1, Session3, Session4, Session6, and Session7 are used, the second correspondence relationship is generated as shown in table 3:

TABLE 3 second correspondences

Service identification	Logical channel identification
		Session
1	LCH 1
		Session 3	LCH 2
Session 4	LCH 3
		Session 6	LCH 4
Session 7	LCH 5

As can be seen from table 3, Session 1 precedes Session3, and the logical channel id corresponding to Session 1 also precedes the logical channel id corresponding to Session 3.

Optionally, the service identifier may also be represented by a corresponding index number of the service in the service list.

S203: and the base station sends the second corresponding relation and the MBMS data to be sent to the UE through the MCH.

One possible implementation manner is as follows: the base station encapsulates the second corresponding relation in a first Media Access Control (MAC) element; another possible implementation is: the base station encapsulates the second corresponding relation in the MSI, namely the MSI not only contains the information of the corresponding relation between the LCH ID and the MBSFN subframe, but also contains the second corresponding relation; the second correspondence relationship may also be carried in other information, and the present invention is not limited thereto.

Wherein, MSI is carried in the first MBSFN subframe of each scheduling period of MCH; as shown in fig. 3, the UE obtains the second corresponding relationship by analyzing the MSI in the first MBSFN subframe of each scheduling period of the MCH.

The first MAC CE may be carried in a first MBSFN subframe of the first scheduling period of the MCH, as shown in fig. 4, in fig. 3 or fig. 4, a shaded portion represents an MBSFN subframe corresponding to the MCH; the UE may also be carried in the last MBSFN subframe of the third scheduling period of the MCH, or of course, may also be carried in other MBSFN subframes of the third scheduling period of the MCH, as long as the base station and the UE agree in advance, and which subframe carries the second correspondence, the UE acquires the second correspondence in the corresponding subframe each time, or may also be carried in the first MAC CE in each subframe of a plurality of MBSFN subframes of the first scheduling period, so as to improve the reliability of the transmission of the first MAC CE, or, each time the base station indicates the subframe carried by the second correspondence through other messages, the UE acquires the correspondence in the subframe indicated by the indication message, as long as the base station sends the second correspondence to the UE, the UE may acquire the second correspondence, and the specific form of the present invention is not limited to this.

And after the UE acquires the second corresponding relation in the corresponding subframe, acquiring an LCH ID corresponding to the service identifier of the MBMS to be received according to the second corresponding relation, acquiring an MBSFN subframe where the LCH ID is located according to the corresponding relation between the LCH ID in the MSI and the MBSFN subframe, and acquiring the data of the MBMS to be received in the MBSFN subframe where the LCH ID is located.

In this embodiment, a base station sends first information to a UE, where the first information includes a first corresponding relationship, the base station generates a second corresponding relationship according to MBMS data to be sent in a first scheduling period, where the second corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent and an LCH ID in the first scheduling period, and the base station sends the second corresponding relationship and the MBMS data to be sent to the UE through an MCH. In each scheduling period, the corresponding relation between the MBMS and the LCH ID is dynamically configured according to the data of the MBMS to be sent in the scheduling period, namely, the corresponding relation between the MBMS and the LCH ID is configured only when the MBMS has data to be sent, and in each scheduling period, the LCH ID is fully utilized, so that the utilization rate of MBSFN subframes is improved, the number of MCHs configured is reduced, the number of MBSFN subframes configured by each MCH is also reduced, and the utilization rate of wireless resources is improved.

In the above embodiment, further, the method further includes: and the base station determines whether to send a third corresponding relation to the UE according to whether the quantity of the MBMS data to be sent in a second scheduling period or the type of the MBMS is the same as that in the first scheduling period, wherein the third corresponding relation is the corresponding relation between the service identifier of the MBMS to be sent in the second scheduling period and the LCH ID.

Specifically, if the number of MBMS data to be sent in the second scheduling period or the type of MBMS is different from the first scheduling period, the base station generates the third corresponding relationship according to the MBMS data to be sent in the second scheduling period, and sends the third corresponding relationship to the UE; specifically, the manner of generating the third corresponding relationship and the manner of sending the third corresponding relationship to the UE refer to the manner of generating and sending the second corresponding relationship, which is not described herein again.

And if the quantity of the MBMS data to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period, the base station does not send the third corresponding relation to the UE. Because the third corresponding relationship is the same as the second corresponding relationship when the number of the MBMS to be transmitted in the second scheduling period or the type of the MBMS is the same as the first scheduling period, the UE may refer to the second corresponding relationship obtained in the previous scheduling period, or the base station may directly transmit the second corresponding relationship in the second scheduling period to the UE.

In order to further improve the resource utilization rate, an embodiment of the present invention further provides that, in each scheduling period, a subframe of a dedicated carrier is dynamically configured for the MCH according to the data size of the MBMS to be received, and a fourth corresponding relationship is sent to the UE, where the fourth corresponding relationship refers to a corresponding relationship between the MCH and the subframe of the dedicated carrier, so that the UE obtains, according to the fourth corresponding relationship and the corresponding relationship between the LCH ID and the MBSFN subframe, an MBSFN subframe in which the LCH ID corresponding to the MBMS to be received is located, and obtains data of the MBMS to be received in the MBSFN subframe in which the LCH ID corresponding to the MBMS to be received is located. Taking fig. 5 as an example, the upper diagram in fig. 5 represents a non-dedicated carrier, the lower diagram in fig. 5 represents a dedicated carrier, wherein the diagonal line shading represents a subframe corresponding to MCH1, the grid shading represents a subframe corresponding to MCH2, and it can be seen from the figure that MCH1 corresponds to the 2 nd subframe and the 3 rd subframe of the non-dedicated carrier and the 4 th subframe, the 5 th subframe and the 6 th subframe of the dedicated carrier; the MCH2 corresponds to the 4 th and 7 th subframes of a non-dedicated carrier and the 7 th and 8 th subframes of a dedicated carrier; the corresponding relation between the subframe of the non-dedicated carrier and the MCH is configured in a semi-static mode and cannot be changed dynamically, the corresponding relation between the subframe of the dedicated carrier and the MCH is in each scheduling period, and the base station is configured dynamically according to the size of data of the MBMS to be sent.

After determining the number of subframes for allocating dedicated carriers to each MCH, the base station allocates the subframes for dedicated carriers according to a predefined rule, for example: the subframe occupied by MCH1 is always ahead and the subframe occupied by MCH2 is always behind. According to this rule, the 4 th, 5 th, and 6 th subframes in the first scheduling period are divided into MCH1, and the 7 th and 8 th subframes are divided into MCH 2. The sub-frames of the special carrier are distributed according to a preset rule, so that the decision of a plurality of base stations can be ensured to be the same, the transmission behaviors of the base stations are ensured to be the same, and the UE can combine wireless signals.

After the base station allocates the subframes corresponding to the MCHs, the fourth corresponding relationship is established, and the fourth corresponding relationship is represented by a bitmap, which may be encapsulated in the MSI or in the second MAC CE. For example: the MSI of MCH1 contains a bitmap "0011100" corresponding to the 2 nd to 8 th sub-frames in the dedicated carrier, respectively, and 1 indicates that the sub-frame is applied to this MCH 1. The MSI of MCH2 contains a bitmap "00011" corresponding to the 4 th to 8 th subframes in the dedicated carrier, respectively, and 1 indicates that the subframe is applied to this MCH 2. And after receiving the fourth corresponding relation, the UE acquires the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe. For example: the correspondence between the LCH ID indicated in the MSI of MCH1 and the MBSFN subframe is shown in table 4:

TABLE 4 second correspondences

Logical channel identification	Sub-frame
		LCH
1	1
		LCH 2	2
LCH 3	3
		LCH 4	4
LCH 5	5

The UE may obtain, according to the fourth correspondence, the 4 th subframe of the dedicated carrier corresponding to LCH 3, the 5 th subframe of the dedicated carrier corresponding to LCH 4, and the 6 th subframe of the dedicated carrier corresponding to LCH 5. And the UE acquires the data to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

In this embodiment, the subframe on the dedicated carrier is allocated to the MCH according to the data size of the MBMS to be transmitted in the first scheduling period, so as to achieve the purpose of flexibly allocating resources, further improve the utilization rate of resources, and better support services with strong burstiness, such as MBMS.

Fig. 6 is a flowchart illustrating a second data transmission method according to the present invention, as shown in fig. 6, the present embodiment is executed by a UE, and the method of the present embodiment is as follows:

s601: and the UE receives first information sent by the base station, wherein the first information comprises a first corresponding relation.

The first corresponding relation is the corresponding relation between a multicast channel MCH and an MBSFN subframe.

S602: and the UE receives a second corresponding relation sent by the base station on the MCH according to the first corresponding relation.

The second corresponding relation is the corresponding relation between the service identification of the MBMS to be received in the first scheduling period and the LCH ID.

S603: and the UE acquires the LCH ID corresponding to the MBMS to be received according to the second corresponding relation.

S604: and the UE receives the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

Specifically, the UE acquires an MBSFN subframe in which an LCH ID corresponding to the MBMS to be received is located; and the UE acquires the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

For a detailed description of the technical solution of this embodiment, refer to the detailed description of the embodiment shown in fig. 2, which is not repeated herein.

In this embodiment, a UE receives a first message sent by a base station, where the first message includes a first corresponding relationship, receives a second corresponding relationship sent by the base station on an MCH according to the first corresponding relationship, obtains an LCH ID corresponding to an MBMS to be received according to the second corresponding relationship, and receives data of the MBMS to be received in an MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located, and because, in each scheduling period, the base station dynamically configures a corresponding relationship between an MBMS and an LCH ID according to the MBMS to be sent in the scheduling period, that is, only when there is data to be sent in the MBMS, the corresponding relationship between the MBMS and the LCH ID is configured, and in each scheduling period, the LCH ID is fully utilized, so that a utilization rate of MBSFN subframes is improved, thereby reducing a number of configured MCHs, and a number of MBSFN subframes configured for each MCH, the utilization rate of wireless resources is improved.

In the foregoing embodiment, further, to improve the resource utilization, in each scheduling period, the base station dynamically configures, according to the data size of the MBMS to be transmitted, a subframe of the dedicated carrier for the MCH, and transmits a fourth corresponding relationship to the UE, and accordingly, the UE acquires, according to the fourth corresponding relationship and the corresponding relationship between the LCH ID and the MBSFN subframe, the MBSFN subframe in which the LCH ID corresponding to the MBMS to be received is located.

The base station allocates the sub-frames on the special carrier for the MCH according to the data size of the MBMS to be sent in each scheduling period, so that the aim of flexibly allocating resources is achieved, the utilization rate of the resources is further improved, and the MBMS with strong burstiness is better supported.

Fig. 7 is a schematic structural diagram of a first embodiment of a data transmission apparatus according to the present invention, where the apparatus includes a sending module 701 and a processing module 702, where the sending module 701 is configured to send first information to a UE, where the first information includes a first corresponding relationship, and the first corresponding relationship is a corresponding relationship between a multicast channel MCH and a multimedia broadcast multicast service single frequency network MBSFN subframe; the processing module 702 is configured to generate a second corresponding relationship according to data of a multimedia broadcast multicast service MBMS to be sent in a first scheduling period, where the second corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent in the first scheduling period and a logical channel identifier LCH ID, and the first scheduling period is a current scheduling period; the sending module 701 is further configured to send the second corresponding relationship and the MBMS data to be sent to the UE through the MCH.

In the above embodiment, the first information further includes a service list; the processing module 702 is specifically configured to generate the second corresponding relationship according to an order of a service list of service identifiers of the MBMS to be sent in the first scheduling period in the first information.

In the above embodiment, the sending module 701 is further configured to encapsulate the second correspondence relationship in a first media access control message MAC CE; or, the second corresponding relation is encapsulated in MCH scheduling information MSI.

In the foregoing embodiment, the first MAC CE is carried in a first MBSFN subframe of a first scheduling period of the MCH;

or,

In the above embodiment, the processing module 702 is further configured to determine whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent in a second scheduling period or the type of the MBMS is the same as that in the first scheduling period, where the third corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent in the second scheduling period and an LCH ID, and the second scheduling period is a next scheduling period of the first scheduling period.

In the foregoing embodiment, the processing module 702 is specifically configured to, if the number of MBMS data to be sent in the second scheduling period or the type of the MBMS is different from that in the first scheduling period, generate the third corresponding relationship according to the MBMS data to be sent in the second scheduling period, and send the third corresponding relationship to the UE; and if the quantity of the MBMS data to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period, the base station does not send the third corresponding relation to the UE.

In the foregoing embodiment, the sending module 701 is further configured to send a fourth corresponding relationship to the UE, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier.

In the above embodiment, the fourth correspondence is represented by a bitmap.

In the above embodiment, the bitmap is encapsulated in the MSI or the second MAC CE.

The apparatus of the above embodiment may be correspondingly used to implement the technical solution of the method embodiment shown in fig. 2, and the implementation principle is similar.

The device of this embodiment sends first information to the UE through the sending module, where the first information includes a first corresponding relationship, the processing module generates a second corresponding relationship according to data of an MBMS to be sent in a first scheduling period, where the second corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent and an LCH ID in the first scheduling period, and the sending module sends the second corresponding relationship and the data of the MBMS to be sent to the UE through the MCH. In each scheduling period, the corresponding relation between the MBMS and the LCH ID is dynamically configured according to the data of the MBMS to be sent in the first scheduling period, namely, the corresponding relation between the MBMS and the LCH ID is configured only when the MBMS has data to be sent, and in each scheduling period, the LCH ID is fully utilized, so that the utilization rate of MBSFN subframes is improved, the number of MCHs configured is reduced, the number of MBSFN subframes configured by each MCH is also reduced, and the utilization rate of wireless resources is improved.

Fig. 8 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present invention, where the apparatus includes a receiving module 801 and a processing module 802, where the receiving module 801 is configured to receive first information sent by a base station, where the first information includes a first corresponding relationship, and the first corresponding relationship is a corresponding relationship between a multicast channel MCH and a multimedia broadcast multicast service single frequency network MBSFN subframe; receiving a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is a corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is a current scheduling period; the processing module is used for acquiring the LCH ID corresponding to the MBMS to be received according to the second corresponding relation; the receiving module 801 is further configured to receive data of the to-be-received MBMS in an MBSFN subframe where an LCH ID corresponding to the to-be-received MBMS is located.

In the above embodiment, the receiving module 801 is specifically configured to acquire an MBSFN subframe where an LCHID corresponding to the MBMS to be received is located; and acquiring the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

In the foregoing embodiment, the receiving module 801 is further configured to receive a fourth corresponding relationship sent by the base station, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier; and acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe.

The apparatus of the above embodiment may be correspondingly used to implement the technical solution of the method embodiment shown in fig. 6, and the implementation principle is similar.

In this embodiment, a receiving module receives first information sent by a base station, where the first information includes a first corresponding relationship, and according to the first corresponding relationship, receiving the second corresponding relation sent by the base station on the MCH, acquiring the LCH ID corresponding to the MBMS to be received by the processing module according to the second corresponding relation, receiving the data of the MBMS to be received by the receiving module at the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is positioned, in each scheduling period, the base station dynamically configures the corresponding relationship between the MBMS and the LCH ID according to the MBMS to be transmitted in the first scheduling period, that is, the corresponding relationship between the MBMS and the LCH ID is configured only when the MBMS has data to be transmitted, in each scheduling period, the LCH ID is fully utilized, the number of MCH is reduced, and the number of MBSFN subframes configured for the MCH is also reduced, so that the utilization rate of radio resources is improved.

Fig. 9 is a schematic structural diagram of a third embodiment of a data transmission apparatus according to the present invention, where the apparatus includes a transmitter 901 and a processor 902, where the transmitter 901 is configured to transmit first information to a UE, where the first information includes a first correspondence, and the first correspondence is a correspondence between a multicast channel MCH and a multimedia broadcast multicast service single frequency network MBSFN subframe; the processor 902 is configured to perform the following operations: generating a second corresponding relation according to data of a Multimedia Broadcast Multicast Service (MBMS) to be sent in a first scheduling period, wherein the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be sent in the first scheduling period and a logical channel identifier (LCH ID); the transmitter 901 is further configured to transmit the second correspondence and the MBMS data to be transmitted to the UE through the MCH.

In the above embodiment, the first information further includes a service list;

the processor is configured to generate a second correspondence according to data of a multimedia broadcast multicast service MBMS to be sent in a first scheduling period, and the second correspondence includes:

and generating the second corresponding relation according to the sequence of the service list of the service identifier of the MBMS to be sent in the first scheduling period in the first information.

In the foregoing embodiment, before the transmitter is configured to send the second corresponding relationship and the MBMS data to be sent to the UE through an MCH, the method further includes:

the processor encapsulates the second corresponding relation in a first media access control message MAC CE; or,

and the processor encapsulates the second corresponding relation in MCH scheduling information MSI.

or,

In the foregoing embodiment, the processor is further configured to determine whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent in a second scheduling period or the type of the MBMS is the same as that in the first scheduling period, where the third corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent in the second scheduling period and an LCH ID, and the second scheduling period is a next scheduling period of the first scheduling period.

In the foregoing embodiment, the determining, by the processor, whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period includes:

The transmitter is further configured to transmit a fourth correspondence to the UE, where the fourth correspondence is a correspondence between the MCH and a subframe on a dedicated carrier.

In the above embodiment, the fourth correspondence is represented by a bitmap.

The device of this embodiment sends first information to the UE through the sender, where the first information includes a first corresponding relationship, the processor generates a second corresponding relationship according to data of an MBMS to be sent in a first scheduling period, where the second corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent in the first scheduling period and an LCH ID, and the sender sends the second corresponding relationship and the data of the MBMS to be sent to the UE through the MCH. In each scheduling period, the corresponding relation between the MBMS and the LCH ID is dynamically configured according to the data of the MBMS to be sent in the first scheduling period, namely, the corresponding relation between the MBMS and the LCH ID is configured only when the MBMS has data to be sent, and in each scheduling period, the LCH ID is fully utilized, so that the utilization rate of MBSFN subframes is improved, the number of MCHs configured is reduced, the number of MBSFN subframes configured by each MCH is also reduced, and the utilization rate of wireless resources is improved.

Fig. 10 is a schematic structural diagram of a fourth data transmission apparatus according to the present invention, and as shown in fig. 10, the apparatus according to the present embodiment includes a receiver 1001 and a processor 1002, where the receiver 1001 is configured to receive first information sent by a base station, where the first information includes a first corresponding relationship, and the first corresponding relationship is a corresponding relationship between a multicast channel MCH and a multimedia broadcast multicast service single frequency network MBSFN subframe; receiving a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is the current scheduling period; the processor 1002 is configured to perform the following operations: acquiring an LCH ID corresponding to the MBMS to be received according to the second corresponding relation; the receiver 1001 is further configured to receive data of the to-be-received MBMS in an MBSFN subframe where an LCH ID corresponding to the to-be-received MBMS is located.

In the above embodiment, the receiving unit is configured to receive the data of the to-be-received MBMS in the MBSFN subframe where the LCH ID corresponding to the to-be-received MBMS is located, and includes:

acquiring an MBSFN subframe where an LCH ID corresponding to the MBMS to be received is located; and acquiring the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

In the foregoing embodiment, the receiver is further configured to receive a fourth corresponding relationship sent by the base station, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier;

the receiver acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located, including:

and acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe.

In this embodiment, a receiver receives first information sent by a base station, where the first information includes a first corresponding relationship, and receives a second corresponding relationship sent by the base station on an MCH according to the first corresponding relationship, a processor obtains an LCH ID corresponding to an MBMS to be received according to the second corresponding relationship, and the receiver receives data of the MBMS to be received in an MBSFN subframe where an LCH ID corresponding to the MBMS to be received is located, because, in each scheduling period, the base station dynamically configures the corresponding relationship between the MBMS and the LCH ID according to an MBMS to be sent in the first scheduling period, that is, only when the MBMS has data to be sent, the corresponding relationship between the MBMS and the LCH ID is configured, and in each scheduling period, the LCH ID is fully utilized, so that the utilization rate of MBSFN subframes is increased, thereby reducing the number of MCH configurations and the number of MBSFN subframes, the utilization rate of wireless resources is improved.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method of data transmission, comprising:

a base station sends first information to User Equipment (UE), wherein the first information comprises a first corresponding relation and a service list, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service single frequency network (MBSFN) subframe;

the base station generates a second corresponding relation according to the sequence of a service list of MBMS service identification to be sent in a first scheduling period in the first information, wherein the second corresponding relation is the corresponding relation between the MBMS service identification to be sent in the first scheduling period and a logic channel identification (LCH ID), and the first scheduling period is the current scheduling period;

2. The method of claim 1, wherein before the base station sends the second mapping relationship and the MBMS data to be sent to the UE through the MCH, the method further comprises:

3. The method of claim 2, wherein a first MAC CE is carried in a first MBSFN subframe of a first scheduling period of the MCH;

or,

4. The method according to any one of claims 1 to 3, further comprising:

5. The method of claim 4, wherein the determining, by the base station, whether to send the third mapping relationship to the UE according to whether the number of data of the MBMS to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period comprises:

6. The method according to any one of claims 1 to 3, further comprising:

7. The method of claim 6, wherein the fourth correspondence is represented by a bitmap.

8. A method of data transmission, comprising:

user Equipment (UE) receives first information sent by a base station, wherein the first information comprises a first corresponding relation and a service list, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service single frequency network (MBSFN) subframe;

the UE receives a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is the corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is the current scheduling period; the second corresponding relation is generated by the base station according to the sequence of the service list of the service identifier of the MBMS to be sent in the first information in the first scheduling period;

9. The method of claim 8, wherein the receiving, by the UE, the data of the to-be-received MBMS in the MBSFN subframe in which the LCH ID corresponding to the to-be-received MBMS is located comprises:

10. The method of claim 9, further comprising:

11. A data transmission apparatus, comprising:

the system comprises a sending module, a receiving module and a processing module, wherein the sending module is used for sending first information to User Equipment (UE), the first information comprises a first corresponding relation and a service list, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service single frequency network (MBSFN) subframe;

a processing module, configured to generate a second correspondence according to an order of a service list of a service identifier of an MBMS to be sent in a first scheduling period in first information, where the second correspondence is a correspondence between the service identifier of the MBMS to be sent in the first scheduling period and a logical channel identifier LCH ID, and the first scheduling period is a current scheduling period;

12. The apparatus of claim 11, wherein the sending module is further configured to encapsulate the second correspondence relationship in a first medium access control message (MAC CE); or, the second corresponding relation is encapsulated in MCH scheduling information MSI.

13. The apparatus of claim 12, wherein a first MAC CE is carried in a first MBSFN subframe of a first scheduling period of the MCH;

or,

14. The apparatus of any one of claims 11 to 13, wherein the processing module is further configured to determine whether to send a third corresponding relationship to the UE according to whether the number of data of the MBMS to be sent or the type of the MBMS in a second scheduling period is the same as that in a first scheduling period, where the third corresponding relationship is a corresponding relationship between a service identifier of the MBMS to be sent and an LCH ID in the second scheduling period, and the second scheduling period is a next scheduling period of the first scheduling period.

15. The apparatus of claim 14, wherein the processing module is specifically configured to, if the number of MBMS data to be sent in the second scheduling period or the type of MBMS is different from that in the first scheduling period, generate the third mapping relationship by the base station according to the MBMS data to be sent in the second scheduling period, and send the third mapping relationship to the UE; and if the quantity of the MBMS data to be sent in the second scheduling period or the type of the MBMS is the same as that in the first scheduling period, the base station does not send the third corresponding relation to the UE.

16. The apparatus according to any one of claims 11-13,

the sending module is further configured to send a fourth corresponding relationship to the UE, where the fourth corresponding relationship is a corresponding relationship between the MCH and a subframe on a dedicated carrier.

17. The apparatus of claim 16, wherein the fourth correspondence is represented by a bitmap.

18. A data transmission apparatus, comprising:

the system comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving first information sent by a base station, the first information comprises a first corresponding relation and a service list, and the first corresponding relation is the corresponding relation between a Multicast Channel (MCH) and a multimedia broadcast multicast service single frequency network (MBSFN) subframe; receiving a second corresponding relation sent by the base station on the MCH according to the first corresponding relation, wherein the second corresponding relation is a corresponding relation between a service identifier of the MBMS to be received and a logical channel identifier (LCH ID) in a first scheduling period, and the first scheduling period is a current scheduling period; the second corresponding relation is generated by the base station according to the sequence of the service list of the service identifier of the MBMS to be sent in the first information in the first scheduling period;

19. The apparatus of claim 18, wherein the receiving module is specifically configured to acquire an MBSFN subframe in which an LCH ID corresponding to the MBMS to be received is located; and acquiring the data of the MBMS to be received in the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located.

20. The apparatus according to claim 19, wherein the receiving module is further configured to receive a fourth mapping relationship sent by the base station, where the fourth mapping relationship is a mapping relationship between the MCH and a subframe on a dedicated carrier; and acquiring the MBSFN subframe where the LCH ID corresponding to the MBMS to be received is located according to the fourth corresponding relation and the corresponding relation between the LCH ID and the MBSFN subframe.