CN100433901C - Transmitting-receiving method of multi-media broadcasting business, and realizing apparatus therefor - Google Patents

Abstract

The present invention discloses a method for transmitting a multimedia broadcast multicast service in a WCDMA system, which comprises the following steps: a decentralized dispatching information step is created for creating decentralized dispatching information by a decentralized dispatching information creating device, and the decentralized dispatching information comprises transmission block interval information for representing the intervals among all the transmission blocks of one multimedia broadcast multicast service; a mapping step is used for mapping signals on a multimedia broadcast multicast service channel and signals on a dispatching information channel which loads the dispatching information of the multimedia broadcast multicast service channel onto a secondary common control physical channel according to the decentralized dispatching information; a transmitting step is used for transmitting the signals to the user equipment by utilizing the secondary common control physical channel. The present invention also provides a receiving method corresponding to the transmitting method and equipment for realizing the two methods. Greater receiving gain can be obtained by utilizing the methods and the equipment.

Description

Sending method and receiving method of multimedia broadcast multicast service and equipment for realizing them

technical field

The present invention mainly relates to wideband code division multiple access (WCDMA), in particular to a sending method, a receiving method and a device for realizing multimedia broadcast multicast service (MBMS) in the WCDMA system.

Background technique

MBMS, as the evolution of WCDMA enhanced broadcast service, is defined in the protocol version of 3GPP Release 6. It provides a point-to-multipoint service that sends data from one data source to multiple users in a wireless network, realizes network resource sharing, and improves network resource utilization, especially wireless resource utilization. MBMS realizes the broadcast and multicast of high-speed multimedia services, and enables IP multicast data to be transmitted point-to-multipoint in the wireless access network.

In order to obtain the optimal transmission of MBMS bearer services in the radio access network (RAN), 3GPP has standardized a number of technologies in the RAN, such as point-to-multipoint (p-t-m) transmission, 1/selective combining (L1/Selective combining) and transmission format selection (between p-t-m and p-t-p (point-to-point)).

Point-to-multipoint (p-t-m) transmission allows all users who subscribe to the same MBMS service to receive the same data on a transmission channel - the Forward Access Channel (FACH). In WCDMA systems, the transport channel FACH is mapped onto the Secondary-Common Control Physical Channel (S-CCPCH). Usually, a physical channel can multiplex multiple transport channels. When two or more MBMS services are time-multiplexed on a single S-CCPCH channel, a radio network controller (RNC) is required to implement MBMS traffic channel (MTCH) Scheduling, scheduling these MBMS services to be sent on the scheduled transmission time interval (TTI). MTCH Scheduling Information (MTCH Scheduling Information) records different transmission times of different services, and uses a dedicated channel - MTCH Scheduling Channel (MSCH), which is mapped on the same S-CCPCH channel and sent to the user equipment (UE). After receiving the MSCH data frame, the UE can perform discontinuous reception (DRx) on the S-CCPCH channel according to the MTCH scheduling information, and can perform partial soft combining (partial soft combining) according to the MTCH scheduling information.

According to the results discussed in the current specification, for each scheduling interval, the periodically sent MSCH includes the following information to be transmitted for each service:

- MBMS service identification;

- The start moment and duration of the data transmission.

Following such a rule, Fig. 1 shows an example of MTCH scheduling and S-CCPCH multiplexing in the prior art.

In this example, as shown in Figure 1, a 64kbps S-CCPCH channel (40msTTI) provides three services:

A 32kbps service (MBMS service 1),

A variable rate service, which can tolerate 640ms delay (MBMS service 2),

A low-rate service that tolerates a large delay (MBMS service 3),

Scheduling information is provided every 640 ms, as shown in Figure 1, with system frame numbers (SFNs) of 255, 319, and so on. In this example, the content of the scheduling information is recorded in the table in FIG. 2 .

It can be seen from the table that the scheduling information located at SFN 255 indicates that the start time of MBMS service 1 is a frame with SFN 256, and its duration is 32 frames. If a user is only interested in MBMS service 1, then after SFN 255 receives above-mentioned scheduling information, begin to receive the data of MBMS service 1 in interval (256,256+32).

The next MBMS scheduling message is received at SFN 319. The scheduling information of SFN 319 indicates that the start moment of MBMS service 1 is a frame with SFN of 320, and its duration is 32 frames.

Afterwards, the user receives subsequent frames according to the scheduling information whose SFN is 319 . The reception of other services and their scheduling information is similar to the above process.

In the 3GPP meeting on MBMS, the radio access network working group (RAN 1) has agreed that under the premise of layer 1 combining (soft combining), the UE must be able to combine messages from different cells within the time window of 2TTI+1 slots. transmission link. That is to say, the synchronization time difference between the two links on which the UE can perform soft combining must be within 1 TTI+1 time slot.

Figure 3 shows an example of the time difference of MBMS service transmission in different cells. In this example, the UE chooses to perform soft combining, selective combining or mixed combining.

In this example, the gray long square is a 40ms TTI transmission block, representing that the same MBMS data is sent on the S-CCPCH channels of different cells. It can be seen that the time difference of the neighboring cell 3 exceeds 1 TTI+1 time slot, and the synchronization between the neighboring cell 1 and the neighboring cell 2 and the serving cell is within the receiving window of the UE. Therefore, the UE in the serving cell may select the S-CCPCH channel of the neighboring cell 1 or the neighboring cell 2 to perform soft combining, or may select the S-CCPCH channel of the neighboring cell 3 to perform selective combining. In addition, if the capability of the UE permits, the S-CCPCH channels of each adjacent cell can also be received for hybrid combination.

Regarding the scheduling and synchronization of the serving cell, neighboring cell 1 , neighboring cell 2 and neighboring cell 3 , a schematic diagram of UE receiver performing selective combining and hybrid combining is shown in FIG. 4 . In the selective combination of Figure 4A, the soft bits of the serving cell are stored and decoded with the first Turbo decoder, and the soft bits of the adjacent cell 3 are stored and decoded with the second Turbo decoder, and then both are stored and decoded. Selective Merge. In the hybrid combination of Figure 4B, the soft combined bits of the serving cell and neighboring cell 2 are stored and decoded with the first Turbo decoder, and the soft bits of the neighboring cell 3 are stored and decoded with the second Turbo decoder. Decoding, and then selectively merging the stored and decoded results.

It can be seen from the above description that the existing MTCH channel scheduling technology multiplexes multiple MBMS services onto one physical channel, and the messages carried by the MSCH channel can enable users to receive discontinuously. However, under the definition of the existing MSCH scheduling information, in each scheduling period, an MBMS service can only be sent continuously in pieces, as shown in FIG. 1 . Therefore, although the user can receive discontinuously, thereby turning off the receiver to save energy when not receiving data, but when the user receives data, the receiver must have a large memory space to store the information of multiple receiving branches. For soft symbols, the receiver must be configured with two or more Turbo decoders, as shown in Figure 4.

Although it is defined in the protocol specification that the capability of the UE must be able to support selective combining and soft combining, however, when there are three links with good signal-to-noise ratios, the UE will not be able to implement hybrid combining or three links due to limited capabilities. Selective merging of roads, because the UE does not have enough memory to store a large block of soft bits and wait for free time to process them.

Contents of the invention

Aiming at these shortcomings of the prior art, the present invention proposes a method for transmitting multimedia broadcast multicast services in a WCDMA system, which can make full use of receiver resources at idle times in discontinuous reception. The method for sending multimedia broadcast multicast services according to the present invention includes the following steps: the step of creating distributed scheduling information is used to create distributed scheduling information by the distributed scheduling information creation device, and the distributed scheduling information includes multimedia broadcast multicast service identification, start time and Data transmission duration and transmission block interval information, the transmission block interval information is used to represent the interval between each transmission block in each multimedia broadcast multicast service; the mapping step is used to create a distributed scheduling information for multimedia broadcast multicast For each MBMS service transmitted on the traffic channel, in the form of a transport block, map the MBMS service on the secondary common control physical channel according to the interval indicated by the transport block interval information, so that each MBMS service The transmission blocks are interleaved with each other, and at the same time, the scheduling channel carrying the scheduling information of the multimedia broadcast multicast service channel is mapped on the secondary common control physical channel; and the sending step is used to transmit the mapped signal to the user by using the secondary common control physical channel equipment.

The present invention also provides a method for receiving multimedia broadcast multicast services for the above method for sending multimedia broadcast multicast services, including the following steps: the step of receiving scheduling information, used for receiving the second time by the receiving device of the multimedia broadcast multicast service receiving device The distributed scheduling information transmitted on the common control physical channel; the step of receiving services is used to, according to the distributed scheduling information, for the required services, within each transmission block interval indicated in the distributed scheduling information, within the interval corresponding to the determined combining method On the cell branch, a transport block corresponding to the transport block interval is received by the receiving device; and a decoding and merging step is used to sequentially send the received transport blocks to the decoding and merging device for decoding and merging.

The present invention also provides a device for transmitting multimedia broadcast multicast services in a WCDMA system, including: a distributed scheduling information creation device for creating distributed scheduling information according to multimedia broadcast multicast services, and the distributed scheduling information includes transmission block interval information The mapping device is used for, according to the created distributed scheduling information, for each MBMS service transmitted on the MBMS service channel, in the form of a transmission block, according to the interval indicated by the transmission block interval information, broadcasting the MBMS The service is mapped on the secondary common control physical channel, so that the transmission blocks of each multimedia broadcast multicast service are interleaved with each other, and at the same time, the scheduling channel carrying the scheduling information of the multimedia broadcast multicast service channel is mapped on the secondary common control physical channel; and the sending device, It is used to transmit the mapped signal to the user equipment by using the secondary common control physical channel.

The present invention also provides a receiving device for receiving multimedia broadcast multicast services in a WCDMA system, including: a receiving device for receiving a signal sent via a secondary public control physical channel, reading the distributed scheduling information therein, and according to According to the distributed scheduling information, within each transmission block interval indicated in the distributed scheduling information, a transmission block corresponding to the transmission block interval is received on the branch of the cell corresponding to the determined combination mode, and the received The transport blocks are sequentially sent to the decoding and merging device; and the decoding and merging device is used for decoding and merging the input transport blocks, and outputting the result.

Utilizing the above-mentioned distributed scheduling sending and receiving method and distributed scheduling sending device and receiving device, the UE can implement hybrid combining or selective combining of three branches without requiring additional capabilities, such as additional memory and Turbo decoder, thereby obtaining Greater receive gain.

Description of drawings

Figure 1 shows an example of MTCH scheduling and S-CCPCH multiplexing in the prior art;

Fig. 2 shows the meaning of scheduling information representation in the example shown in Fig. 1;

Fig. 3 shows a schematic diagram of the time difference of transmission between the serving cell and three neighboring cells in the example shown in Fig. 1;

FIG. 4 shows a schematic diagram of selective combining and hybrid combining performed by a UE receiver in the case of synchronization shown in FIG. 3;

Fig. 5 shows the flowchart of sending MBMS service method according to the present invention;

Figure 6A shows the mapping of MTCH and MSCH to S-CCPCH in the prior art;

FIG. 6B shows the mapping of MTCH and MSCH to S-CCPCH in the method for sending MBMS services according to the present invention;

FIG. 7 shows a flow chart of a method for receiving an MBMS service at a UE in accordance with the present invention;

FIG. 8 shows a schematic structural diagram of an MBMS service sending device according to the present invention;

FIG. 9 shows a schematic structural diagram of an MBMS service receiving device according to the present invention; and

FIG. 10A and FIG. 10B show schematic diagrams of transport block combining performed in the receiving device shown in FIG. 9 .

Detailed ways

The present invention will be described below with reference to the drawings showing embodiments of the invention. In the drawings, elements and parts that are the same in each view are denoted by the same reference numerals, and repeated descriptions thereof are omitted.

In the following embodiments, the aforementioned three MBMS services are taken as an example to illustrate that there are three neighboring cells besides the serving cell, and the transmission time differences between these four cells are as shown in FIG. 3 .

Fig. 5 shows a flow chart of the method for sending MBMS services according to the present invention. The process shown in FIG. 5 starts at step 501 . In step 502, the distributed scheduling information creating means in the radio network controller creates MSCH distributed scheduling information for each service according to MBMS service conditions. The distributed scheduling information includes the following scheduling information:

- MBMS service identification,

- the start moment and duration of the data transmission,

- transmission block interval,

It can be seen that, in addition to the information about the MBMS service identifier, start time, and data transmission duration included in the scheduling information of the prior art, the distributed scheduling information created in the method for sending MBMS services according to the present invention also includes the transmission block interval this information. It is a newly added information unit based on the method for sending MBMS services of the present invention, and represents the interval between transmission blocks of an MBMS service. If the unit of the transport block is TTI, the above-mentioned interval usually takes at least 3 TTI. This is because, on the one hand, the allowable synchronization time difference of soft combining is 1TTI+1 time slot, and it is necessary to allow time for receiving data transmitted by other cell branches within this time window; on the other hand, enough processing time can be reserved for The selective combination of at least three cell branches makes it possible for the next TTI transport block of the service to be received to arrive only after the selective combination is performed.

After that, the flow goes to step 503 . In step 503, the mapping of MTCH and MSCH to S-CCPCH is performed according to the MSCH scheduling information. Afterwards, in step 504, the mapped signal is sent to the UE through the S-CCPCH. The process shown in FIG. 5 ends at step 505 .

In the above step 503, the mapping of MTCH and MSCH to S-CCPCH is shown in Fig. 6B. Compared with the mapping of MTCH and MSCH to S-CCPCH in the sending method of the prior art shown in FIG. 6A , in the method for sending MBMS services of the present invention, the transport blocks of a service are arranged separately at intervals of the aforementioned transport blocks That is, in each MSCH cycle, in the first transport block interval, the first transport blocks (TTI) of MBMS service 1, MBMS service 2 and MBMS service 3 are arranged in sequence, and in the second transport block interval, sequentially Arrange the second transport blocks (TTI) of MBMS service 1, MBMS service 2 and MBMS service 3, and so on. However, in the existing sending method, each MBMS service is sent sequentially and sequentially in large blocks, as shown in FIG. 6A . The mapping shown in Figure 6B is based on the distributed scheduling information for each service in the MSCH distributed scheduling information created by the distributed scheduling information creation device in step 502 above. It can be seen from this that such mapping reflects the For example, 601 represents the MSCH service identifier, 602 represents the start time, 603 represents the duration of transmission, and 604 represents the transmission block interval.

The present invention also provides a UE-side receiving method for the above-mentioned sending method of the present invention, the flow chart of which is shown in FIG. 7 .

The process shown in FIG. 7 starts at step 701 . In step 702, the receiver at the UE receives the MSCH information on the S-CCPCH, and reads the distributed scheduling information, including:

- MBMS service identification,

- the start moment and duration of the data transmission,

- Transmission block interval.

In step 703, according to the above-mentioned scheduling information, the receiver at the UE side, for the required service—MBMS service 1, respectively, within each transport block interval, receives the cell branch corresponding to the determined combination method corresponding to the transport block interval A transmission block, and send the received transmission block to the decoding and merging device for decoding and merging. Wherein, the combining manner includes soft combining, selective combining or mixed combining, and the transport blocks sent to the decoding and combining device include transport blocks that have undergone soft combining. That is to say, when it is determined that the combining mode is selective combining, within the first transport block interval, the receiver receives the first transport block of the serving cell and the first transport block of the neighboring cell 3, and combines the two The transport blocks are sequentially sent to the decoding and merging device for decoding and then selectively combined, and within the interval of the second transport block, the receiver receives the second transport block of the serving cell and the second transport block of the adjacent cell 3, and These two transmission blocks are sequentially sent to the decoding and merging device for decoding, and then selectively combined, and so on; and when it is determined that the merging method is hybrid merging, then within the interval of the first transport block, receive the serving cell and the adjacent For the first transmission block of cell 3 and adjacent cell 1 or adjacent cell 2, the serving cell and the first transmission block of adjacent cell 1 or adjacent cell 2 are soft-combined, and then the soft-combined transport block is combined with the corresponding The first transmission block of the neighboring cell 3 is sequentially sent to the decoding and merging device for decoding and then mixed and combined, and within the second transmission block interval, the serving cell and the neighboring cell 3 and the neighboring cell 1 or the neighboring cell 2 are received. The second transmission block of the serving cell and the second transmission block of the adjacent cell 1 or the adjacent cell 2 are soft-combined, and then the soft-combined transmission block and the second transmission block of the adjacent cell 3 are sequentially sent to the decoding The merging device performs decoding and then performs mixing and merging, and so on. The receiving method shown in FIG. 7 ends at step 704 .

The present invention also provides an MBMS service sending device in the RNC, which is used to implement the MBMS service sending method of the present invention. The structure diagram of MBMS service sending device 800 according to the present invention is shown in FIG. 8 , which includes distributed scheduling information creating means 801 , mapping means 802 and sending means 803 . Wherein, the distributed scheduling information creating means 801 creates distributed scheduling information according to the MBMS service to be transmitted, and the distributed scheduling information includes the information of the transmission block interval. The mapping means 802 completes the mapping of the MSCH and MTCH to the S-CCPCH according to the distributed scheduling information created by the distributed scheduling information creating means 801, so that each MBMS service is interleaved with each other and respectively in the form of transport blocks, according to the information indicated by the transport block interval information. The interval is mapped on the secondary common control physical channel. According to the mapping completed by the mapping means 802, the sending means 803 sends the signal to the UE through the S-CCPCH.

The present invention also provides an MBMS service receiving device at the UE end, which is used for receiving signals sent by the MBMS service sending method of the present invention. The structure diagram of the MBMS service receiving device 900 according to the present invention is shown in FIG. 9 , which includes a receiving device 901 and a decoding and merging device 902 . Wherein, the receiving device 901 receives the signal sent via the S-CCPCH, and reads the distributed scheduling information therein. The distributed scheduling information includes MBMS service identifier, start time, duration of data transmission and information of transmission block interval. Afterwards, according to the distributed scheduling information, the receiving device 901 receives a transport block corresponding to the transport block interval on the cell branch corresponding to the determined combination mode within each transport block interval for the required services, and sends the received The transport blocks are sent to the decoding and merging device 902 in sequence. The decoding and merging device 902 decodes the input transport block or the soft-combined transport block and then combines it, and outputs the result.

A schematic diagram of the combination of transport blocks performed in the above receiver is shown in FIG. 10 , wherein FIG. 10A shows a schematic diagram of selective combination, and FIG. 10B shows a schematic diagram of hybrid combination. In this embodiment, the example of receiving MBMS service 1 is still used for illustration. In addition to the serving cell, there are three adjacent cells, and the transmission time difference between these four cells is shown in FIG. 3 , and the transmission block interval is 3TTI.

As shown in FIG. 10A, when performing selective combination, since the transport block interval is 3TTI, after receiving the MSCH identifier, the receiving device 901, in the first transport block interval, except for receiving the corresponding MBMS service 1 in the serving cell In addition to the first transmission block of the MBMS service 1, the interval time of the transmission block is also used to receive the first transmission block corresponding to the MBMS service 1 of the adjacent cell 3, and the above two transmission blocks are sequentially sent to the Turbo decoder for decoding and then selectivity merge. After the combination processing of the first transport block is completed, within the second transport block interval, the second transport block corresponding to MBMS service 1 in the serving cell and the second transport block corresponding to MBMS service 1 in the neighboring cell 3 are received , which are sequentially sent to the Turbo decoder for decoding and then selectively merged. Follow-up receiving, decoding and merging are performed by analogy.

Similarly, for the hybrid combination in Figure 10B, the corresponding transport blocks of the serving cell and the corresponding neighboring cells are received respectively within 3TTI of the transport block interval, and after the soft combination is completed, the soft combined transport block and the time difference exceeds The transport blocks on the cell branches of the time window are sequentially sent to the Turbo decoder for decoding, and then mixed and combined, and the subsequent corresponding transport blocks are received in the following transport block intervals for decoding and combining.

Although the UE may collide when receiving data from different branches, for example, a TTI data block has not been received yet, and data from another merged branch has arrived, but this kind of collision can be resolved only with a small data buffer of the receiver. In the definition of UE capabilities in 3GPP TS 25.302, it has been stipulated that a UE can support receiving more than one S-CCPCH channel at the same time at the same frequency point. Therefore, while receiving the soft merging branch, the UE can receive the 1 TTI data block of the selective merging branch and store it in the TTI buffer. The cached data can be processed immediately once the Turbo decoder is released from decoding the soft-merge branch data. For example, for the selective combination and mixed combination of continuous transmission shown in FIG. 3 , only 1 TTI of soft symbol value buffer space and 1 Turbo decoder are required.

It can be seen from this that after the above-mentioned decentralized scheduling transmission is implemented, the processing of the UE receiver can be like a pipeline operation, first receive the data of the branch of the cell (including the data after soft combining), and send it to the Turbo decoder for decoding. It can also receive the branch data of the adjacent cell 1 and send it to the Turbo decoder for decoding. If the interval time is long enough, the branch data of the adjacent cell 2 can also be received and sent to the Turbo decoder for decoding. Therefore, the MBMS service transmission method of the present invention can enable the UE to implement hybrid combination or selective combination of three branches without additional capabilities, such as additional memory and Turbo decoder, so as to obtain greater receiving gain.

While the invention has been described with reference to what are presently considered to be embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. On the contrary, the invention is to cover various modifications and equivalents included within the spirit and scope of the appended claims. The scope of the following claims is intended to be given the broadest interpretation thereby encompassing all such modifications and equivalent structures and functions.

Claims (12)

1. A method for sending multimedia broadcast multicast services in a WCDMA system, wherein said WCDMA system includes a serving cell and a plurality of adjacent cells, the method may further comprise the steps: The step of creating distributed scheduling information is used to create distributed scheduling information by the distributed scheduling information creation device, the distributed scheduling information includes multimedia broadcast multicast service identification, start time and data transmission duration and transmission block interval information, the transmission block interval information It is used to indicate the interval between each transport block in each MBMS service; The mapping step is used for, according to the created distributed scheduling information, for each MBMS service transmitted on the MBMS service channel, in the form of a transmission block, according to the interval indicated by the transmission block interval information, the multimedia broadcast The multicast service is mapped on the secondary common control physical channel, so that the transmission blocks of each multimedia broadcast multicast service are interleaved with each other, and at the same time, the scheduling channel carrying the scheduling information of the multimedia broadcast multicast service channel is mapped on the secondary common control physical channel; and The sending step is used to use the secondary common control physical channel to transmit the mapped signal to the user equipment. 2. The method for sending MBMS services according to claim 1, wherein the transmission block interval is at least the time corresponding to 3 transmission blocks. 3. The method for sending multimedia broadcast multicast services according to claim 1, wherein said mapping transmission step maps signals on said multimedia broadcast multicast service channels on secondary public control physical channels as follows: In each transmission block interval of a scheduling period, one transmission block of each MBMS service is arranged in sequence. 4. A method for receiving a multimedia broadcast multicast service for sending the multimedia broadcast multicast service method according to claim 1, comprising the steps of: The step of receiving scheduling information is used for receiving the distributed scheduling information transmitted on the secondary common control physical channel by the receiving device of the multimedia broadcast multicast service receiving device; The step of receiving services is used to, according to the distributed scheduling information, for the required services, respectively within each transmission block interval indicated in the distributed scheduling information, on the cell branch corresponding to the determined combination mode, by the receiving means for receiving a transport block corresponding to said transport block interval; and The decoding and merging step is used to sequentially send the received transport blocks to the decoding and merging device for merging after decoding. 5. The method for receiving multimedia broadcast multicast services according to claim 4, wherein the combining method is any one of soft combining, selective combining and hybrid combining. 6. The method for receiving multimedia broadcast multicast services according to claim 5, wherein in the step of receiving services, when the multimedia broadcast multicast service receiving device determines that the combination mode is selective combination, the multimedia broadcast multicast service receiving device The receiving device receives the transmission block of the serving cell, and also receives the transmission block on the branch of the cell outside the receiving time window, and the length of the receiving time window is the sum of the time of two transmission blocks and the time of one time slot. 7. The method for receiving multimedia broadcast multicast services according to claim 5, wherein in the step of receiving services, when the combination method determined by the multimedia broadcast multicast service receiving device is hybrid combination, the multimedia broadcast multicast service receiving device Receive the transmission block of the serving cell, and also receive the transmission blocks of the other cell branches synchronized with the serving cell within a receiving time window, and perform soft combination of the transmission blocks of the serving cell and other cells, and receive the transmission blocks outside the receiving time window A transport block on a cell branch, wherein the length of the receiving time window is the sum of two transport block times and one time slot. 8. A device (800) for sending multimedia broadcast multicast services in a WCDMA system, comprising: A distributed scheduling information creating device (801), configured to create distributed scheduling information according to a multimedia broadcast multicast service, where the distributed scheduling information includes transmission block interval information; Mapping means (802), configured to, according to the created distributed scheduling information, for each MBMS service transmitted on the MBMS service channel, in the form of a transport block, according to the interval indicated by the transport block interval information, The MBMS service is mapped on the secondary common control physical channel, so that the transmission blocks of each MBMS service are interleaved with each other, and at the same time, the scheduling channel carrying the scheduling information of the MBMS service channel is mapped on the secondary common control physical channel; as well as The sending device (803), configured to use the secondary common control physical channel to transmit the mapped signal to the user equipment. 9. The device for sending multimedia broadcast multicast services according to claim 8, wherein the mapping means (802) maps the signals on the multimedia broadcast multicast service channels on the secondary public control physical channel as follows: In each transmission block interval of a scheduling period, one transmission block of each MBMS service is arranged in sequence. 10. A receiving device (900) for receiving multimedia broadcast multicast services in a WCDMA system, comprising: The receiving device (901) is configured to receive the signal sent via the secondary common control physical channel, read the distributed scheduling information therein, and according to the distributed scheduling information, target the required services respectively in each of the distributed scheduling information indicated in the distributed scheduling information Within a transport block interval, on the cell branch corresponding to the determined combination mode, receive a transport block corresponding to the transport block interval, and send the received transport blocks to the decoding and combining device in sequence (902); and A decoding and merging device (902), configured to decode and combine the input transport blocks, and output the result. 11. The receiving device (900) for receiving multimedia broadcast multicast services according to claim 10, wherein when it is determined that the combining mode is hybrid combining, the receiving means (901) receives the transport block of the serving cell, and also receives and combines the transport blocks of the serving cell synchronizing transport blocks on other cell branches within a receiving time window, soft combining the transport blocks of the serving cell and other cells, and receiving transport blocks on cell branches outside the receiving time window, wherein the receiving time The window length is the sum of two transport block times and one slot time. 12. The receiving device (900) for receiving multimedia broadcast multicast services according to claim 11, wherein the decoding and merging device (902) decodes the input transport block and the transport block after soft combining, and combines the result output.

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