WO2006021148A1

WO2006021148A1 - Method for realizing multimedia broadcast/multicast service

Info

Publication number: WO2006021148A1
Application number: PCT/CN2005/001318
Authority: WO
Inventors: Qiang Sun
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2004-08-24
Filing date: 2005-08-23
Publication date: 2006-03-02
Also published as: CN100334897C; CN1741630A

Abstract

A method for realizing MBMS increases MBMS data load-bearing at UTRAN side and UE side, and increases MBMS processing functional entity. The method includes following steps, A. high level corresponding to UTRAN side delivering MBMS data down to MAC-c/sh/m entity at UTRAN side; B. forwarding MBMS data to MAC-hs entity at UTRAN side via MBMS data load-bearing; C. MAC-hs entity at UTRAN side transmiting MBMS data by HSDPA mechanism; D. MAC-hs entity at UE side receiving MBMS data, and delivering MBMS data to MAC-c/sh/m entity on UE side via configured MBMS data load-bearing; E. transmiting MBMS data to high level corresponding to UE side via MBMS data load-bearing.

Description

Method for realizing multimedia broadcast multicast service

Technical field

The present invention relates to Multimedia Broadcast Multicast Service (MBMS) in Wideband Code Division Multiple Access (WCDMA) systems, and more particularly to a method for implementing MBMS using High Speed Downlink Packet Access (HSDPA). Background of the invention

Current WCDMA systems are capable of delivering data rates up to 2 Mbit/s, support high-speed packet switching and circuit switching, and provide many Internet-based services. However, for services such as download or streaming media, where the uplink and downlink data are asymmetric, the system needs to provide higher transmission rate and less delay. To meet this requirement, WCDMA has improved the air interface and introduced HSDPA technology to support peak rates of up to 10 Mbit/s.

HSDPA technology is an important technology to improve the downlink capacity and data service rate in the later stage of WCDMA network construction, and it is the enhancement and evolution of WCDMA in the wireless part. HSDPA adds a MAC-hs entity to the Medium Access Control (MAC) layer on the NodeB side of the base station. The entity is mainly responsible for handling fast hybrid automatic retransmission (HARQ) and fast scheduling algorithms. In addition, HSDPA is still on the original physical channel. Three new channels have been added, which are responsible for transmitting user data, transmitting control information required for decoding, and transmitting response and feedback information. The basic structure of the WCDMA radio part after the introduction of HSDPA technology is still consistent with R99. Therefore, the terminal supporting HSDPA technology can coexist with the R99 terminal in one carrier without running on a separate carrier.

The HSDPA technology after adding the MAC-hs entity on the NodeB side supports two MAC structures: one for controlling the radio network controller (CRNC) including the MAC-c/sh entity, and the other for the CRNC not including the MAC-c/sh entity. .

As shown in FIG. 1, when the MAC-c/sh entity is included in the CR C, the MAC-hs entity on the NodeB side passes the MAC-c/sh entity on the CRNC side, and then the serving radio network controller MAC-d entity connection on the (SRNC) side. The MAC-c/sh entity provides the relevant functions of the HSDPA technology, and the Frame Protocol (HS-DSCH FP) processes the data from the SRNC to the CRNC and the data transmission between the CRNC and the NodeB.

As shown in FIG. 2, in the case that the MAC-c/sh entity is not included in the CRNC, since the CR C does not contain any content related to the HSDPA technology, the MAC-hs entity on the NodeB side directly communicates with the MAC-d of the SRNC. Entity connection. The high-speed downlink shared channel (HS-DSCH) user plane on the SRNC side is directly connected to the NodeB side, that is, the SRNC is directly connected to the NodeB.

The newly added MAC-hs functional entity on the NodeB side is mainly responsible for fast packet scheduling of HSDPA and real-time control of the HS-DSCH channel. According to the quality of the wireless channel and the amount of data waiting to be transmitted and the priority of the service, the fast packet scheduling algorithm can achieve the optimal allocation of shared resources. In order to better adapt to the rapid changes of the wireless channel, the HSDPA technology places the scheduling function unit on the NodeB side instead of the Radio Network Controller (RNC), and the transmission time interval is thus shortened to less than 2ms.

As shown in Figure 3, for each cell supporting HS-DSCH transmission, its UTRAN side contains a MAC-hs entity, which is responsible for processing data on the HS-DSCH, managing the allocation of HSDPA physical resources, and passing MAC- The Control channel receives configuration parameters from the RC layer. The MAC-hs entity includes the following functional entities:

1. Data flow control: According to the transmission capability of the air interface, control the data flow between the MAC-c/sh and MAC-hs entities or the MAC-d entity and the MAC-hs entity, in order to reduce the signaling delay of the L2 layer and Data retransmission caused by congestion of the HS-DSCH channel. Data flow control is done independently by the MAC-d data stream portion of each MAC-hs entity.

2. Scheduling/Class Processing: Manage the resources of the HS-DSCH according to the level of the HARQ entity and the data stream. Based on the status report from the relevant uplink signaling, it is decided whether to perform a new data transmission or a data retransmission.

3. HARQ: Handles hybrid automatic retransmissions for the user.

4. Transport Format and Resource Consolidation (TFRC) Selection: Selecting data on the HS-DSCH channel Choose the right transport format and resources.

Through the MAC-hs entity on the UTRAN side, data from the MAC-d entity is transmitted to the MAC-hs entity on the UE side through data flow control, scheduling/level processing, HARQ, and TFRC selection.

As shown in Figure 4, the MAC-hs entity on the UE side has the following functions:

1. HARQ: Handles all tasks related to HARQ.

2. Reordering Queue distribution: The MAC-hs protocol data unit (PDU) is routed to the corresponding reordering cache according to the queue identifier.

3. Rearrangement: The received MAC-hs PDUs are reordered according to the Transmission Sequence Number (TSN).

4. Decomposition: Decompose the MAC-hs PDU. First, the MAC-hs header is removed, the MAC-d PDU and all padding bits are resolved; then, the MAC-d PDU is transmitted to the upper layer.

The data from the UTRAN side is processed by the UE-side MAC-hs entity and sent to the corresponding upper layer of the UE.

Through FIG. 3 and FIG. 4, the MAC-hs entity completes data transmission from the UTRAN side to the UE side. With the rapid development of the network, a large number of multimedia services have emerged. Some of these application services require multiple users to receive the same data at the same time, such as video on demand, video conferencing, online education, and interactive games. The above mobile multimedia services have the characteristics of large data volume, long duration, and delay sensitivity. In order to implement multimedia services on mobile networks, the WCDMA/Global System for Mobile Communications (GSM) standardization organization proposes MBMS services, which provide point-to-multipoint services for transmitting data to multiple users using one data source in a mobile network, ie via wireless The common channel on the access network (RAN) side performs multimedia service broadcast multicast to all users or group users in the cell, thereby realizing network resource sharing and maximizing the utilization of network resources. For the RNC, if the cell it controls supports the MBMS service, each cell has an MBMS Service ID (MBMS Service ID) and an MBMS service entity corresponding to the MBMS Service Identity. For a cell that has an MBMS user activated, the MBMS service entity of the cell C is saved. Information about the UE of the MBMS service. The above information includes at least UTRAN Radio Network Temporary Identity (U-RNTI) information for all UEs of each MBMS class.

Figure 5 shows the UTRAN-side MAC structure supported by the existing MBMS specified in the 3GPP protocol. In order to complete the MBMS service, the protocol adds a MAC m entity with a multi-media broadcast multipoint function to the original MAC-c/sh entity to become a MAC-c/sh/m entity. The protocol adds two logical channels: MBMS Point-to-Multipoint Control Channel (MCCH) and MBMS Point-to-Multipoint Transmission Channel (MTCH). The MTCH carries MBMS data information, and the control information of the MBMS data carried on the MCCH represents the characteristics of the MBMS data information on the MTCH. The MBMS data is multiplexed and mapped to the forward access channel (FACH) through the MCCH and MTCH channels, and then transmitted to the user through the FACH.

Figure 6 shows the structure of the MAC-c/sh/m entity on the UTRAN side. This entity is located on the CRNC and has the following functions:

1. Add the MBMS identifier (add MBMS-ID): For the point-to-multipoint type logical channel, the MBMS-ID field located at the MAC header is used to distinguish the MBMS service type;

2. Target channel type domain multiplexing (TCTF MUX): used to indicate the mapping relationship between the logical channel and the transport channel, that is, adding the target channel type field to the data header, and filling in the corresponding value in the type field;

3. Scheduling/Buffering/Priority Handling: Manages the normal transmission resources of the above two data streams according to the MBMS data stream and the non-MBMS data stream level.

4. TFC selection: Select the combination of the transfer formats to map FACH to MCCH and MTCH.

Figure 7 shows the structure of the MAC-c/sh/m entity on the UE side. The function of this entity is:

1. Read the MBMS ID (read MBMS-ID): Identify the type of MBMS data that is passed in;

2. Target channel type domain demultiplexing (TCTF DEMUX): Handling TCTF in the MAC header Detection and deletion of the domain, and distinguishing the mapping relationship between the logical channel MCCH or MTCH and the transmission channel.

In the existing MBMS service, the MBMS data transmission method is:

Step 1. The upper layer on the UTRAN side sends the MBMS data to the MAC-c/sh/m entity on the UTRAN side through the MCCH and MTCH channels.

Step 2. The MAC-c/sh/m entity on the UTRAN side first adds an MBMS-ID to the MBMS data on the MTCH channel; then performs a TCTF multiplexing operation on the data on the MCCH and MTCH channels, and maps the data of the two channels to On the FACH channel; then, the data on the FACH channel is transmitted to the UE side through scheduling/buffer/level processing and TFC selection operations, and the UTRAN side passes the MBMS Notification Indicator Channel (MICH) for each user in the MBMS service level. A broadcast paging indication is sent to the UE side to notify the UE of the time at which the UTRAN side MBMS data is received.

Step 3. After receiving the MBMS data from the UTRAN side, the FACH channel on the UE-side MAC-c/sh/m entity performs a TCTF demultiplexing operation to map the data on the FACH channel to the MCCH and MTCH channels; The disadvantages of the MBMS-ID identification data of the data on the MTCH channel, and the data on the MCCH and MTCH channels are transmitted to the existing MBMS method corresponding to the UE side are:

1. Since there is no channel carrying MBMS data between the MAC-c/sh/m entity and the MAC-hs entity on the UTRAN side, the MBMS data cannot be transmitted through the MAC-hs entity, that is, the MBMS cannot be implemented by using the HSDPA technology, and thus cannot be utilized. The high-speed data transmission characteristics of HSDPA, so the transmission rate of the existing MBMS service is low.

2. Since the UE side receives the MBMS service data according to the time point carried in the broadcast paging indication on the MICH channel, a delay occurs between the transmission time on the UTRA side and the reception time on the UE side. Therefore, the MBMS service data is The transmission time is long, and the processing on the UE side is complicated. Summary of the invention

In view of this, an object of the present invention is to provide a method for implementing MBMS by using HSDPA technology to improve the transmission rate of MBMS.

To achieve the above object, the present invention provides a method for implementing MBMS by using HSDPA technology, which is respectively between a MAC-c/sh/m entity on a UTRAN side and a MAC-hs entity, and a MAC-c/sh/m on the UE side. The MBMS data bearer is added in the entity and the MAC-hs entity, and the MBMS processing function entity is added in the MAC-hs entity on the UTRAN side. The method includes the following steps:

A. After receiving the MBMS data sent by the HVRAN side corresponding to the upper layer, the MAC-c/sh/m entity sends the MBMS data to the MAC of the UTRAN side through the MBMS data bearer added between itself and the MAC-hs entity on the UTRAN side. Hs entity;

B. The MAC-hs entity on the UTRA side sends the MBMS data to the MAC-hs entity on the UE side in HSDPA data transmission mode;

C. The MAC-hs entity on the UE side receives the MBMS data from the UTRAN side, and transmits the MBMS data to the MAC-c/sh/m entity on the UE side through the MBMS data bearer added by itself;

D. The MAC-c/sh/m entity on the UE side transmits the MBMS data to the corresponding upper layer of the UE side through the MBMS data bearer added by itself.

The method further includes: adding, by the upper layer corresponding to the UTRAN side, the MBMS level information of the user in the link establishment signaling of the Iub interface, and transmitting the high speed shared control channel code information to the user through the Iub interface.

The high speed shared control channel code information includes at least MBMS level information and a high speed shared control channel code.

The MBMS processing function entity of the UTRAN side MAC-hs entity addition setting includes: an MBMS level queue allocation function entity, an MCCH level queue function entity, an MTCH level queue function entity, an MBMS identification function entity, a transmission format, and a resource allocation selection function. Body.

The method for transmitting the MBMS data to the MAC-hs entity on the UTRAN side by the UTRAN side MAC-c/sh/m entity in the step A includes the following steps:

The MAC-c/sh/m entity on the UTRAN side adds the channel identifier to the received MBMS data, and then the data on the MTCH and MCCH channels are uploaded and sent in the increased MBMS data in a time-multiplexed manner. MAC-hs entity on the UTRA side;

A2. The MAC-hs entity on the UTRA side distinguishes whether the data is MTCH channel data or MCCH channel data according to the channel identifier carried in the MBMS data;

A3. The MAC-hs entity on the UTRAN side firstly distinguishes the data on the two channels by the MBMS level queue allocation part in the scheduling/level processing function entity, and then stores the MCCH channel data of the same level. In the same queue of the MCCH level queue function entity, the same MTCH channel data is stored in the same queue of the MTCH level queue function entity, and then the MBMS identification function entity is added to increase the MBMS identifier of the data in all the MTCH level queues. Operation

A4. The MAC-hs entity on the UTRAN side transmits data in all MCCH class queues or data in the MTCH class queue with the MBMS identity added to the HS-PDSCH channel.

The step B described includes the following steps:

Bl. The MAC-hs entity on the UTRAN side sends the control information of the MBMS data on the HS-SCCH channel to the UE side;

B2. After the time interval specified by the protocol, the MAC-hs entity on the UTRAN side transmits the MBMS data to the UE side through the HS-PDSCH channel.

The step C described includes the following steps:

The MAC-hs entity on the UE side receives the control information of the MBMS data from the MAC-hs entity on the UTRAN side through the HS-SCCH channel, and parses the control information;

C2. After the time interval specified by the protocol, the MAC-hs entity on the UE side accesses the MBMS data on the HS-PDSCH through the HSDPA mechanism; The MAC-hs entity on the UE side sends the MBMS data on the HS-PDSCH channel to the UE side through the MBMS data bearer between the UE-side MAC-hs entity and the UE-side MAC-c/sh/m entity. In the MAC-c/sh/m entity.

The MBMS data added in the UE-side MAC-c/sh/m entity includes: one data bearer connects the MAC-hs entity on the UE side with the MCCH channel on the UE side, and the other data bearer connects to the MAC on the UE side. The MBS identity function entity is read in the -hs entity and the UE side MAC-c/sh/m entity, and the start ends of the two MBMS data bearers are the same.

The step D described includes the following steps:

Dl. The MAC-c/sh/m entity on the UE side receives the MBMS from the UE-side MAC-hs entity.

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D2. The MTCH or MCCH channel data is distinguished by the UE identity (identity) carried in the control information in the HS-SCCH channel, and if the MCCH channel data is received, the data is sent to the MBMS data to the MCCH channel. Carrying, if the MTCH channel data is received, sending the data to the data bearer of the MBMS identification function entity, and after reading the MBMS identity function entity, transmitting the data to the MTCH channel;

D3. The MAC-c/sh/m entity on the UE side sends the MBMS data to the corresponding upper layer of the UE through the MCCH or MTCH channel.

According to the present invention, the MBMS data from the higher layer corresponding to the UTRAN side is transmitted to the corresponding upper layer of the UE side according to the HSDPA mechanism, and the transmission rate is high. Specifically, the present invention has the following beneficial effects:

1. The MBSD data is transmitted by the HSDPA mechanism, which improves the transmission rate of the MBMS service. 2. When the data is transmitted on the 1; side, the time division multiplexing is adopted, and the data on the MTCH and MCCH channels are transmitted by using one MBMS data bearer, so that the UE side does not need to perform demultiplexing operation, simplifying The data processing process.

According to the HSDPA mechanism, the MAC-hs entity on the UTRAN side does not need to broadcast the paging indication through the MICH channel when transmitting the MBMS data, indicating the receiving time of the UE side, therefore The UE side can receive the MBMS data at any time, and the processing on the UE side is compressed. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows the system structure diagram of the MAC-c/sh entity supported by HSDPA technology.

Figure 2 shows the system structure diagram of the HSDPA technology that does not include the MAC-c/sh entity.

Figure 3 shows the structure of the MAC-hs entity on the URTAN side.

4 is a structural diagram of a MAC-hs entity on the UE side.

FIG. 5 is a structural diagram of a MAC layer in which MBMS is added to the UTRAN side in the prior art.

FIG. 6 is a structural diagram of a MAC-m entity in which MBMS is added to the UTRAN side in the prior art. FIG. 7 is a structural diagram of a MAC-m entity in which MBMS is added to the UE side in the prior art.

Figure 8 is a flow chart of the present invention for implementing MBMS using HSDPA technology.

FIG. 9 is a diagram showing a MAC layer structure of an MBMS added to the UTRAN side of the present invention.

Figure 10 is a diagram showing the structure of the MAC-hs entity of the MBMS added to the URTAN side of the present invention.

FIG. 11 is a structural diagram of a MAC-hs entity in which an MBMS is added to a UE side according to the present invention.

FIG. 12 is a structural diagram of a MAC-m entity in which an MBMS is added to a UE side according to the present invention. Mode for carrying out the invention

In order to make the objects and technical solutions of the present invention more comprehensible, the present invention will be further described in detail below with reference to the accompanying drawings.

The present invention is a method for implementing MBMS by using HSDPA, and the basic idea is: MAC-c/sh/m entity between the MAC-c/sh/m entity on the UTRAN side and the MAC-hs entity on the UTRAN side, and on the UE side. The MBMS data bearer is added to the MAC-hs entity in the UE side, and the MBMS level processing function entity is added to the UTRAN side MAC-hs entity, and then the MBMS data is sent according to the data transmission manner in the HSDPA mechanism.

Specifically, the present invention adds a name between the MAC-c/sh/m entity on the UTRAN side and the MAC-hs entity on the UTRAN side by means of MAC-m configuration (Configuration with MAC-m). MBMS data bearer, responsible for transmitting MBMS data from the MAC-c/sh/m entity on the UTRAN side to the MAC-hs entity on the UTRAN side; the MAC-c/sh/m entity on the UE side and the MAC-hs entity on the UE side The MBMS data bearer is added internally, and the MBMS data is transmitted from the MAC-hs entity on the UE side to the MAC-c/sh/m entity on the UE side. In addition, the present invention adds an MBMS level processing function entity to the MAC-hs entity on the UTRAN side, including an MBMS level queue allocation function entity, two types of MBMS data queues, an Add MBMS-ID, and a TFRC selection function entity, wherein the MBMS level queue allocation is performed. The functional entity and the two types of MBMS data queues are respectively responsible for allocating and storing data on the MCCH and MTCH channels; and the Add MBMS-ID and TFRC selection function entities complete the processing before the MBMS data is sent to the UE according to the HSDPA mechanism.

Since the MBMS provides multiple types of services, the MBMSs selected by different users are different, that is, the MBMS levels are different. Therefore, the upper layer corresponding to the UTRAN side divides all users into multiples according to the MBMS level of the user before the MBMS data transmission. Group, where each user in the same group has the same MBMS level. For different groups, the upper layer adds the MBMS level information of the user to the link signaling of the Iub interface, and delivers the channel code information of different high speed shared control channels (HS-SCCH) through the Iub interface. The HS-SCCH channel code information includes MBMS level information and an HS-SCCH channel code, etc., wherein the HS-SCCH channel code has two functions: First, indicating group information, that is, users in the same group have the same channel. The code is different, and the channel codes of the users in different groups are different. Another function is to decode the UE identity (UE Identity) carried in the control information in the HS-SCCH channel, and distinguish the data on the MCCH and MTCH channels. For example, after decoding by the HS-SCCH channel code, UE Identity is equal to Oxfiff for MCCH channel data, and UE Identity equal to 0x0000 for MTCH channel data.

As shown in FIG. 8, the method for implementing the MBMS by using the HSDPA includes the following steps: Step 801. The higher layer corresponding to the UTRA side sends the MBMS data to the UTRAN side to increase the MAC-c/sh/m entity of the MBMS.

Here, the upper layer corresponding to the UTRAN side will be the data information and the control information data of the MBMS service. The MAC-c/sh/m entity of MBMS is added to the UTRAN side through the MTCH and MCCH channels respectively, as shown in Figure 9. This step is identical to the outgoing data operation in the existing MBMS service.

Step 802. The MAC-c/sh/m entity of the MBMS is added to the UMRAN side to send data to the UTRAN side through the configured MBMS data bearer to add the MAC-hs entity of the MBMS.

In this step, the MAC-c/sh/m entity of the MBMS added to the UTRAN side first adds a channel identifier to the received MBMS data to distinguish the MTCH and MCCH channel data; then, the data on the MTCH and MCCH channels are divided according to the score. In the time multiplexing mode, the MBMS MAC-hs entity is added to the UTRAN side by adding the MBMS data bearer configured by the MAC-m configuration to the UTRAN side. The so-called time division multiplexing method refers to: transmitting according to the time sequence transmitted from the data on the MTCH and MCCH channels, that is, if the MAC-c/sh/m entity on the UTRAN side first receives the data on the MTCH channel, the MTCH is first used. The data is transmitted on the MBMS data bearer configured by MAC-m. Since the MTCH and MCCH channel data are transmitted at different times, the data of the two channels can be transmitted through a data bearer in a time division multiplexing manner.

The MAC-c/sh/m entity of the MBMS is added to the UTRAN side. The MBMS processing function entity is added to the UTRAN side MAC-hs entity shown in FIG. 3. As shown in FIG. 10, the portion indicated by the dashed box in FIG. Added MBMS processing function entity. After the MAC-c/sh/m entity of the MBMS is added on the UTRAN side to transmit the MBMS data, the MAC-hs entity of the MBMS is added on the UTRAN side to receive and process the MBMS data. First, the MAC-hs entity that adds the MBMS on the UTRAN side distinguishes whether the data is MTCH channel data or MCCH channel data according to the channel identifier carried in the MBMS data; and then allocates the MBMS level queue allocation part in the scheduling/level processing function entity, The data on the two channels are respectively distinguished according to the MBMS level of the user; then, the MCCH channel data of the same level is stored in the same queue of the MCCH level queue function entity, and the MTCH channel data of the same level is stored in the MTCH level queue function entity. In the same queue; increase the MBMS-ID functional entity to add MBMS-ID to all data in the MTCH rank queue; all MCCH rank queues are added The data in all MTCH class queues of the MBMS-ID is selected by the TFRC and transmitted to the HS-DSCH channel.

According to the HSDPA related protocol, the HS-DSCH channel includes two channels: an HS-SCCH channel and an HS-PDSCH channel, wherein the HS-SCCH channel carries control information for transmitting data, and the HS-PDSCH channel carries data to be transmitted. Corresponding to the MBMS service, the MBCH channel carries the MBMS control information data, and the MTCH channel carries the MBMS data. Therefore, when the present invention implements the MBMS according to the HSDPA mechanism, the data in the MCCH class queue and the MTCH level queue in which the MBMS-ID is added are added. Data is sent to the HS-PDSCH channel; control information such as their data size is sent to the HS-SCCH channel.

Step 803. The MAC-hs entity of the MBMS added to the UMRAN side adds the MBMS MAC-hs entity to the UE side according to the HSDPA mechanism to send the MBMS data.

According to the agreement, when transmitting data by the HSDPA mechanism, the control information on the HS-SCCH channel is first sent out, so that the receiving end prepares the real data according to the control information; and then transmits the bearer on the HS-PDSCH channel. data.

In this step, the MAC-hs entity that adds the MBMS on the UTRAN side first sends the control information of the MBMS data on the HS-SCCH channel to the UE side, and the control information includes the MBMS data block size, the data level, the UE identity, and the like; After the time interval specified by the protocol, the MBMS data is sent to the UE through the HS-PDSCH channel. The above method of transmitting MBMS data is the same as the method of transmitting other data by using HSDPA technology.

Step 804. The MAC-hs entity that adds the MBMS on the UE side receives the MBMS data from the UTRAN side, and transmits the MBMS data to the UE side through the configured MBMS data bearer to increase the MAC-c/sh/m entity of the MBMS. .

In this step, the MAC-hs entity that adds the MBMS on the UE side first receives the control information of the MBMS data of the MAC-hs entity added with the MBMS from the UTRAN side through the HS-SCCH channel, and parses various control information, such as MBMS. Data block size, queue level, UE Identity, etc., as shown in Figure 11; after passing the time interval specified by the protocol, through the HSDPA machine The system receives the real MBMS data on the HS-PDSCH. Then, the MBMS control information or the service data is added to the MAC-hs entity of the MBMS and the MAC-c/sh/m entity of the MBMS is added to the UE side through the pre-configured UE side of the system. The MBMS data bearer is sent out.

Step 805. The MAC-c/sh/m entity of the MBMS added by the UE side transmits the MBMS data to the corresponding upper layer of the UE side through the configured MBMS data bearer.

As shown in FIG. 12, the system pre-configures two MBMS data bearers in the MAC-c/sh/m entity on the UE side: one is the data of the MAC-hs entity that adds the MBMS and the MCCH channel of the UE side connected to the UE side. The bearer, the other is the data bearer that reads the MBMS-ID functional entity in the MAC-hs entity that adds the MBMS to the UE side and the MAC-c/sh/m entity that adds the MBMS to the UE side. The start ends of the two MBMS data bearers are the same, and are all connected to the MBMS data of the MAC-hs entity of the MBMS added by the UE side.

In this step, the MAC-c/sh/m entity that adds the MBMS on the UE side first receives the MBMS data from the MAC-hs entity to which the MBMS is added on the UE side; and then, carries the control information data in the HS-SCCH channel. The UE identity distinguishes the MTCH or MCCH channel data. If the MCCH channel data is received, the data is sent to the MBMS data bearer that leads to the MCCH channel. If the MTCH channel data is received, the data is sent. The data bearer of the MBMS-ID functional entity is read, and after the MBMS-ID information in the data is read and the MBMS service type is obtained, the data is transmitted to the MTCH channel; finally, the MAC-c/sh/m of the UE side The entity sends the MBMS data to the corresponding upper layer of the UE through the MCCH or MTCH channel.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are made within the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection.

Claims

Claim

A method for implementing MBMS for multimedia broadcast multicast service, characterized in that MAC-c/sh/m between the MAC-c/sh/m entity and the MAC-hs entity on the UTRAN side and the MAC-c/m on the UE side respectively An MBMS data bearer is added to the entity and the MAC-hs entity, and an MBMS processing function entity is added to the MAC-hs entity on the UTRAN side. The method includes the following steps:

A. After receiving the MBMS data sent by the HVRAN side corresponding to the upper layer, the MAC-c/sh/m entity sends the MBMS data to the MAC of the UTRAN side through the MBMS data bearer added between the MBMS data and the UTOAN side MAC-hs entity. Hs entity;

B. The MAC-hs entity on the UTRAN side sends the MBMS data to the MAC-hs entity on the UE side in the HSDPA data transmission manner;

The MAC-hs entity on the UE side receives the MBMS data from the UTTRAN side, and transmits the MBMS data to the MAC-c/sh/m entity on the UE side through the MBMS data bearer added by itself;

D. The MAC-c/sh/m entity on the UE side transmits the MBMS data to the corresponding upper layer of the UE side through its own MBMS data bearer.

The method of claim 1, wherein the method further comprises: adding, by the upper layer corresponding to the UTRAN side, the MBMS level information of the user in the link establishment signaling of the Iub interface, and sending the high speed to the user through the Iub interface. Share control channel code information.

3. The method according to claim 2, wherein the high speed shared control channel code information comprises at least MBMS level information and a high speed shared control channel code.

The method according to claim 1, wherein the MBMS processing function entity of the UTRAN-side MAC-hs entity addition setting comprises: an MBMS level queue allocation function entity, an MCCH level queue function entity, and an MTCH level queue function entity. The MBMS identity function entity, transport format, and resource allocation selection function entity are added.

5. The method of claim 4, wherein the UTRAN side of step A The method for the MAC-c/sh/m entity to transmit the MBMS data to the MAC-hs entity on the UTRAN side includes the following steps:

The MAC-c/sh/m entity on the UTRAN side adds the channel identifier to the received MBMS data, and then the data on the MTCH and MCCH channels are uploaded to the added MBMS data bearer in a time-multiplexed manner. MAC-hs entity on the UTRAN side;

A2. The MAC-hs entity on the UTRAN side distinguishes whether the data is MTCH channel data or MCCH channel data according to the channel identifier carried in the MBMS data;

A3. The MAC-hs entity on the UTRAN side firstly distinguishes the data on the two channels by the MBMS level queue allocation part in the scheduling/level processing function entity, and then stores the MCCH channel data of the same level. In the same queue of the MCCH level queue function entity, the MTCH channel data of the same level is stored in the same queue of the MTCH level queue function entity, and then the MBMS identification function entity is added to perform the operation of adding the MBMS identifier to the data in all the MTCH level queues. ;

A4. The MAC-hs entity on the UTRAN side sends the data in the MCCH class queue or the data in the MTCH class queue with the MBMS identifier added to the HS-PDSCH channel.

6. The method of claim 5, wherein the step B comprises the following steps:

7. The method of claim 6, wherein the step C comprises the following steps:

C2. After the time interval specified by the protocol, the MAC-hs entity on the UE side passes HSDPA. The mechanism receives MBMS data on the HS-PDSCH;

C3. The MAC-hs entity on the UE side transmits the MBMS data on the HS-PDSCH channel to the MAC-c/sh/m entity on the UE side through the system data bearer.

The method according to claim 4 or 7, wherein the MBMS data bearer added in the UE-side MAC-c/sh/m entity comprises: a data bearer connected to the MAC-hs entity on the UE side The MCCH channel on the UE side, the other data bearer is connected to the MAC-hs entity on the UE side, and the MBMS identity function entity is read in the MAC-c/sh/m entity on the UE side, and the start ends of the two MBMS data bearers are the same.

9. The method of claim 8, wherein the step D comprises the following steps:

Dl. The MAC-c/sh/m entity on the UE side receives the MBMS data from the MAC-hs entity on the UE side;

D2. The MTCH or MCCH channel data is distinguished by the UE identity carried by the control information in the HSMS data HS-SCCH channel, and if the MCCH channel data is received, the data is sent to the MBMS data bearer to the MCCH channel. If the MTCH channel data is received, the data is sent to the data bearer of the MBMS identification function entity, and after the MBMS identification function entity is read, the data is transmitted to the MTCH channel;