WO2011015069A1

WO2011015069A1 - Method and apparatus for sending dynamic scheduling information for multimedia broadcast multicast service

Info

Publication number: WO2011015069A1
Application number: PCT/CN2010/072483
Authority: WO
Inventors: 王斌; 马子江
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-04
Filing date: 2010-05-06
Publication date: 2011-02-10
Also published as: CN101990165A

Abstract

A method and apparatus for sending dynamic scheduling information for Multimedia Broadcast Multicast Service (MBMS) are provided. The method includes: during a dynamic scheduling period, each Multicast Channel (MCH) corresponding to a piece of dynamic scheduling information, and the dynamic scheduling information being sent over at least one multicast subframe prior to the multicast subframe corresponding to the MCH. Applying the invention, the brief loss of the dynamic scheduling information of a user equipment (UE), caused by the delay of the hardware and the terminal decoding data, is avoided, the accuracy of the MBMS reception of the UE is improved, and the power of the UE is saved.

Description

Method and device for transmitting dynamic scheduling information of multimedia broadcast and multicast service

Technical field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting dynamic scheduling information of a multimedia broadcast and multicast service (MBMS).

Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile phones, a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferencing, television broadcasting, video on demand, advertising, online education, interactive games, etc., have emerged. The aspect meets the rising business needs of mobile users and brings new business growth points to mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time. Compared with general data services, mobile data multimedia services have the characteristics of large data volume, long duration, and delay sensitivity.

In order to effectively utilize mobile network resources, the 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) proposed MBMS. MBMS provides a point-to-multipoint service in which data sources send data to multiple users in a mobile network, which realizes network resource sharing and improves utilization of network resources. MBMS defined by 3GPP can not only achieve low-speed message-like multicast and broadcast in plain text, but also enable broadcast and multicast of high-speed multimedia services, providing a variety of rich video, audio and multimedia services.

In a Long Term Evolution (LTE) system, the MBMS data channel and control channel can use a single cell transmission mode and a multi-cell transmission mode. The single cell transmission mode means that the data channel and the control channel of the MBMS are transmitted only in the local cell, and there is no function of multicast diversity single frequency network (MB SFN, Multicast Broadcast Single Frequency Network); and the multi-cell transmission mode refers to Multiple cells transmit the same data on the same time-frequency resource, ie, the MBMS or control information uses the content synchronization method, that is, the MBSFN macro diversity is used. In the multi-cell transmission mode, multiple cells transmit MBMS data or control signaling of the same content at the same time, which can improve the receiving gain of the user equipment (UE, user equipment).

Multicast channel (MCH) is a transport channel for point-to-multipoint transmission, corresponding physical resources. It is the multicast resource allocated by the system for transmitting MBMS services. A carrier frequency can carry multiple MCHs. The physical channel carrying a specific MCH is determined by a set of subframes. These subframes are not necessarily time-continuously allocated. This pattern is called subframe allocation of a multicast channel. A picture (MSAP, MCH subframe allocation pattern), an MSAP describes the physical resources of an MCH channel. In the LTE system, the multicast resources of each MBSFN area may be divided according to a certain pattern in units of subframes, and the resources indicated by each pattern constitute one MCH.

A Multicast Traffic Channel (MTCH) is a logical channel. An MTCH carries data of one or more services (such as a TV program called a service). A service is carried only in one MTCH, and an MTCH is mapped to the MCH. For transmission, one or more MTCHs can be mapped to one or more MCHs, that is, multiple MBMS services can be mapped to one MCH.

The characteristics of the MBMS transmission using the multi-cell transmission mode include synchronous transmission in the MBSFN area; support for combining the multi-cell MBMS transmission data; MTCH and MCCH are mapped to the MCH transmission channel in the p-T-m mode.

Through the MSAP information, the UE can learn the specific multicast resource corresponding to a specific MCH. However, since the MCH includes one or more MBMS service data (such as one or more MTCHs), the MBMS dynamic scheduling information needs to be specified. Indicate the specific physical resources corresponding to a certain MBMS service. In this way, when receiving a certain MBMS service (such as the MBMS service MTCH1 that the UE is interested in), the UE can learn the exact resource of the MBMS service through the indication of the MBMS dynamic scheduling information, thereby achieving accurate reception, and for the MCH. The other multicast subframes (such as multicast subframes carrying non-MTCH1), the UE maintains a silent state and does not receive its subframe information, thereby achieving the purpose of saving energy consumption of the UE.

In the prior art, the resources scheduled or governed by the MBMS dynamic scheduling information are defined as a dynamic scheduling period, such as 320 ms, 640 ms, and the like. Figure 1 is a schematic diagram showing the logical relationship between the setting of the existing scheduling block in the dynamic scheduling period and the MBMS service. Figure 2 is a schematic diagram showing the relationship between the setting of the existing scheduling block in the dynamic scheduling period and the MBMS service, where both Figure 1 and Figure 2 are shown. It is assumed that there is only one MCH in the dynamic dynamic scheduling period. The bold horizontal line shading in FIG. 1 and FIG. 2 indicates the scheduling block, and other shading indicates different MBMS services, such as MBMS service 1 and MBMS service 2 in the figure. And MBMS service 3, the blank part indicates no data or fill Fill in. The subframes specified by the protocol that cannot be used to carry the MBMS service, such as subframe 0, subframe 4, subframe 5, and subframe 9, are indicated in FIG.

As shown in FIG. 1 and FIG. 2, the network side configures the allocation information of the multicast subframe. Since it is assumed in FIG. 1 and FIG. 2 that there is only one MCH in the dynamic scheduling period, the schedule block in the schedule block includes the present. The scheduling information of all services in the dynamic scheduling period, and the scheduling block is sent at the initial position of the entire dynamic scheduling period, and the range of the scheduling resources is all MBMS services in the dynamic scheduling period. The initial location may be the first multicast subframe of the dynamic scheduling period or a corresponding physical resource.

Figure 3 shows the case where multiple MCHs are included in the dynamic scheduling period. Each MCH is configured with the MBSFN subframe as the granularity. The MBSFN subframes occupied by each MCH are configured according to the BCCH. The multicast subframes of the MBMS service are configured in sequence; therefore, resources occupied by multiple MCHs are also continuously allocated in the time domain.

At present, the network side sends the set MBMS dynamic scheduling information to the UE, and the UE receives the scheduling block that carries the MBMS dynamic scheduling information at the initial position of a dynamic scheduling period; the UE is in the first multicast of the dynamic scheduling period. A scheduling block that carries dynamic scheduling information is received on the frame to learn the resource configuration of each MBMS service in the dynamic scheduling period. The configuration of each MBMS service resource is not part of the content involved in this document. Currently, there are many methods implemented, such as: indicating the starting subframe number of each MBMS service and the multicast multicast of the MBMS service in the MBMS dynamic scheduling information. The number of frames, etc. After obtaining the MBMS service resource configuration information, the UE can receive the MBMS service of interest in the corresponding resource in the dynamic scheduling period.

When the UE obtains the MBMS dynamic scheduling information from the current UE, the delay caused by the hardware device and the terminal decoding data, when the UE receives the multicast subframe including the scheduling block, cannot be in the time of the subframe. The specific MBMS service resource configuration information of the MBMS dynamic scheduling information is immediately known. Generally, the length of the delay from receiving the multicast subframe of the scheduling block to the UE and decoding the specific MBMS service resource configuration information is 2~3ms. That is to say, after the UE receives the multicast subframe including the scheduling block, the specific information of the scheduling block is not known in time. For the UE, there is no indication of the dynamic scheduling time in a period of 2~3ms, which leads to the lack of short-lived dynamic scheduling information of the UE, which reduces the accuracy of the UE receiving the MBMS service. Added energy consumption of the UE.

Summary of the invention

The invention provides a method for transmitting dynamic scheduling information, which solves the problem that the short dynamic scheduling information of the user equipment is missing due to the hardware device and the delay caused by the decoding of the data by the terminal.

In order to solve the above technical problem, the present invention provides a method for transmitting dynamic scheduling information. In a dynamic scheduling period, the method includes: each multicast channel (MCH) corresponding to one dynamic scheduling information, for the dynamic scheduling period Dynamic scheduling information corresponding to an MCH, the dynamic scheduling information is sent on at least one multicast subframe of a multicast subframe corresponding to one MCH.

The above transmission method also has the following characteristics:

The multicast subframe information corresponding to the dynamic scheduling information corresponding to the one MCH is at least one multicast subframe, and the multicast subframe resource belongs to another MCH.

The above transmission method also has the following characteristics:

The multicast subframe resource occupied by the dynamic scheduling information corresponding to the one MCH belongs to the previous MCH adjacent to the MCH.

The above transmission method also has the following characteristics:

The multicast subframe in which the multicast subframe information occupied by the dynamic scheduling information corresponding to the MCH is located is adjacent to the multicast subframe corresponding to the one MCH; or

The multicast subframe in which the multicast subframe information corresponding to the dynamic scheduling information corresponding to the MCH is located is at least one subframe separated from the multicast subframe corresponding to the one MCH.

The above transmission method also has the following characteristics:

The multicast subframe resources occupied by the dynamic scheduling information corresponding to the one MCH are on one or two multicast subframes.

The above transmission method can also have the following characteristics:

And transmitting, in the step of transmitting the dynamic scheduling information corresponding to the one MCH, using a modulation and coding manner corresponding to the MCH to which the multicast subframe occupied by the dynamic scheduling information belongs. Correspondingly, the apparatus for transmitting dynamic scheduling information provided by the present invention includes: a dynamic scheduling information sending module, which is configured to: correspond to dynamic scheduling information corresponding to each MCH in a dynamic scheduling period, before the MCH The transmission is performed on at least one multicast subframe of the multicast subframe.

The above transmitting device also has the following features:

The dynamic scheduling information sending module is configured to: send dynamic scheduling information corresponding to an MCH by using resources on at least one multicast subframe of another MCH.

The above transmitting device also has the following features:

The dynamic scheduling information sending module is configured to: use the resources on one or two multicast subframes to send the dynamic scheduling information corresponding to the one MCH, and the multicast scheduling information corresponding to the one MCH is multicast. The multicast subframe in which the subframe resource is located is adjacent to or spaced apart from the multicast subframe corresponding to the one MCH by at least one subframe.

The above transmitting device also has the following features:

The dynamic scheduling information sending module is configured to: when transmitting the dynamic scheduling information, use a modulation and coding mode corresponding to the MCH to which the multicast subframe resource occupied by the dynamic scheduling information belongs.

The method and device for transmitting dynamic scheduling information provided by the embodiment of the present invention sends the dynamic scheduling information of the MCH on the multicast resource preceding the MCH, so that the terminal learns the at least one multicast subframe in advance before receiving the MCH. The dynamic scheduling information of the MCH avoids the phenomenon that the UE's short dynamic scheduling information is missing due to the hardware device and the delay caused by the decoding of the data of the terminal, which increases the accuracy of the UE receiving the MBMS service and saves the power of the UE.

BRIEF abstract

FIG. 1 is a schematic diagram showing the logical relationship between the setting of an existing scheduling block in a dynamic scheduling period and an MBMS service;

2 is a schematic diagram showing the relationship between the setting of an existing scheduling block in a dynamic scheduling period and an MBMS service; 3 is a schematic diagram of multicast resource allocation of each MCH when multiple MCHs are included in a dynamic scheduling period;

4 is a schematic diagram of the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 1 of the present invention;

FIG. 5 is a schematic diagram of the number and location of a multicast subframe occupied by another dynamic scheduling information according to Embodiment 2 of the present invention; FIG.

6 is a schematic diagram showing the number and location of multicast subframes occupied by another dynamic scheduling information according to Embodiment 3 of the present invention;

FIG. 7 is a schematic diagram of the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 4 of the present invention; FIG.

8 is a schematic diagram of the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 5 of the present invention;

FIG. 9 is a schematic diagram showing the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 6 of the present invention; FIG.

FIG. 10 is a schematic diagram showing the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 7 of the present invention; FIG.

11 is a schematic diagram of the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 8 of the present invention;

FIG. 12 is a schematic diagram showing the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 9 of the present invention; FIG.

FIG. 13 is a schematic diagram showing the number and location of multicast subframes occupied by dynamic scheduling information according to Embodiment 10 of the present invention.

Preferred embodiment of the invention

The embodiment of the invention provides a method for transmitting dynamic scheduling information, which solves the problem that the short dynamic scheduling information of the user equipment is missing due to the hardware device and the delay caused by the decoding of the data by the terminal. Embodiment 1 of the present invention will be described below with reference to the accompanying drawings.

An embodiment of the present invention is described by using three MCHs in a dynamic scheduling period as MCH1, MCH2, and MCH3. In a dynamic scheduling period, the network side sequentially sends MBMS service data to the UE through MCH1, MCH2, and MCH3. The MCH1 corresponding modulation and coding scheme (MCS: Modulation and Coding Scheme) is MCS1, MCH2 corresponds to MCS2, and MCH3 corresponds to MCS3. The length of the dynamic scheduling period is 320ms.

The process of sending dynamic scheduling information by using the method for sending dynamic scheduling information provided by the embodiment of the present invention includes:

Step 1: The network side configures at least one multicast subframe for each MCH.

The network side configures the allocation of multicast subframes through the Broadcast Control Channel (BCCH). These available multicast subframes constitute a multicast subframe resource pool, and the network side needs to occupy the multicast subframes according to MCH1, MCH2, and MCH3. Number, respectively, a part of the multicast subframe in the multicast subframe resource pool is allocated to each MCH, and the information of the multicast subframe corresponding to each MCH (such as the starting subframe and the number of persistent multicast subframes) The MCCH of the MBMS service is sent to the user equipment. The following embodiments 2 to 6 are the same.

Step 2: The network side allocates the multicast subframe resource occupied by the MCH dynamic scheduling information before each MCH.

In this step, first, the number of multicast subframes occupied by the dynamic scheduling information needs to be determined, and then the location of the multicast subframe occupied by the dynamic scheduling information needs to be determined.

In this embodiment, in order to ensure that the dynamic scheduling information can be received and decoded by the user equipment before the corresponding MCH arrives, the dynamic scheduling of sending the MCH on the at least one multicast subframe of the multicast subframe corresponding to the MCH is selected. information. In this embodiment, the multicast subframe resource of the dynamic scheduling information of the MCH belongs to a previous MCH adjacent to the MCH. In other embodiments, the first N MCHs of the MCH may also be affiliated. For the first MCH in a dynamic scheduling period, the multicast subframe resource of the dynamic scheduling information corresponding to the MCH is selected in the last dynamic scheduling period.

As shown in FIG. 4, each of MCH1, MCH2, and MCH3 corresponds to one dynamic scheduling information, and is sequentially transmitted in the same dynamic scheduling period. That is, the dynamic scheduling information of MCH2 passes the same dynamic tone. The MCH1 transmission of the degree period occupies part of the resources of one multicast subframe of the MCH1, and the multicast subframe is adjacent to the MCH2; the dynamic scheduling information of the MCH3 is sent through the MCH2 of the same dynamic scheduling period, occupying a multicast of the MCH2. A part of the resources on the subframe, and the multicast subframe is adjacent to the MCH3. The dynamic scheduling information of the MCH1 is sent by the MCH3 of the last dynamic scheduling period, and occupies part of the resources of a multicast subframe of the last dynamic scheduling period MCH3. And the multicast subframe is adjacent to MCH1.

Step 3: The network side sends the dynamic scheduling information on at least one multicast subframe allocated for dynamic scheduling information.

In this embodiment, when the dynamic scheduling period starts, the network side first sends the MBMS service data through the MCH1, and when the network side sends the MBMS service data through the MCH1, the MCH1 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH2. When the network side sends the MBMS service data through the MCH2, the MCH2 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH3. When the network side sends the MBMS service data through the MCH3, the MCH3 carries the scheduling block, and the scheduling block includes the following. Dynamic scheduling information of MCH1 in one cycle.

MCH and MCS are - corresponding, that is, MCH1 is only transmitted by MCS1, MCH2 is only used by MCS2, and MCH3 is only used by MCS3. The dynamic scheduling information of MCH2 carried on MCH1 is modulated and encoded by MCS1, the dynamic scheduling information of MCH3 carried on MCH2 is modulated and encoded by MCS2, and the dynamic scheduling information of MCH1 carried on MCH3 is modulated and encoded by MCS3.

Step 4: The UE receives dynamic scheduling information of the MCH bearer.

First, the UE learns the multicast subframe resource corresponding to each MCH through the MCCH (ie, step 1), and also learns the MBMS service list/information carried on each MCH through the MCCH UE. The purpose of the UE is to receive An MBMS service, so after the UE obtains the service list/information that it cares about from the MCCH, the UE can specifically map the service to a certain MCH; at this time, the UE does not receive other MBMS services that he wants to receive. Unrelated MCH.

Since the dynamic scheduling information is sent in advance, it is only necessary for the UE to be related to it.

It can be received in advance before the MCH. Combining this advance amount with the number of multicast subframes occupied by the dynamic scheduling information, the UE can know how long it takes to read its dynamic scheduling information on the MCH to which it is concerned. Step 5: The UE receives the MBMS service data carried by the MCH corresponding to the dynamic scheduling information. In this step, the user equipment extracts information about the MBMS service of interest according to the dynamic scheduling information of the MCH obtained by decoding, such as the starting subframe number of the MBMS service data and the number of persistent multicast subframes, and correspondingly arrives later. The MCH selectively receives MBMS service data.

Regarding the processing on the terminal side, the respective embodiments are similar and will not be described in detail below.

Embodiment 2 of the present invention will be described below with reference to the accompanying drawings.

An embodiment of the present invention is described by using three MCHs in a dynamic scheduling period as MCH1, MCH2, and MCH3. In a dynamic scheduling period, the network side sequentially sends MBMS service data to the UE through MCH1, MCH2, and MCH3. The modulation and coding mode corresponding to MCH1 is MCS1, MCH2 corresponds to MCS2, and MCH3 corresponds to MCS3. The dynamic scheduling period has a duration of 320ms.

Compared with the first embodiment, in this embodiment, the dynamic scheduling information is transmitted by two multicast subframes earlier than the corresponding MCH.

As shown in FIG. 5, in the embodiment of the present invention, MCH1, MCH2, and MCH3 each correspond to one dynamic scheduling information. In the same dynamic scheduling period, MCH1, MCH2, and MCH3 are sequentially transmitted, and dynamic scheduling information of MCH2 passes the same dynamic scheduling period. The MCH1 sends, and occupies a part of the resources of a multicast subframe, and the multicast subframe is separated from the MCH2 by one subframe (which may be a multicast subframe or a unicast subframe); the dynamic scheduling information of the MCH3 is passed. The MCH2 transmission of the same dynamic scheduling period occupies part of the resources of one multicast subframe, and the multicast subframe is separated from the MCH3 by one subframe. The dynamic scheduling information of the MCH1 is sent by the MCH3 of the last dynamic scheduling period, occupying more than one. A part of the resources on the subframe is broadcast, and the multicast subframe is separated from the MCH1 by one subframe.

When the network side sends the MBMS service data through the MCH1, the MCH1 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH2. When the network side sends the MBMS service data through the MCH2, the scheduling block is carried in the MCH2, and the scheduling block includes the MCH3. Dynamic scheduling information: When the network side sends the MBMS service data through the MCH3, the scheduling block is carried in the MCH3, and the scheduling block includes the dynamic scheduling information of the MCH1 of the next period.

In the embodiment of the present invention, the MCH and the MCS are corresponding to each other, that is, the MCH1 only uses the MCS1. Send, MCH2 only uses MCS2, MCH3 only uses MCS3; MCH2 dynamic scheduling information carried on MCH1 is modulated and encoded by MCS1, MCH3 dynamic scheduling information carried on MCH2 is modulated and encoded by MCS2, MCH1 carried on MCH3 Dynamic scheduling information is modulated and encoded with MCS3.

The third embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 6, in the embodiment of the present invention, MCH1, MCH2, and MCH3 each correspond to one dynamic scheduling information, and MCH1, MCH2, and MCH3 are sequentially transmitted in the same dynamic scheduling period. That is, the dynamic scheduling information of the MCH2 is transmitted through the MCH1 of the same dynamic scheduling period, occupying some resources on two adjacent multicast subframes, and the second multicast subframe is adjacent to the MCH2; the dynamic scheduling information of the MCH3 is passed. The MCH2 transmission of the same dynamic scheduling period occupies part of the resources of two adjacent multicast subframes, and the second multicast subframe is adjacent to the MCH3; the dynamic scheduling information of the MCH1 is sent by the MCH3 of the last dynamic scheduling period. , occupying some resources on two adjacent multicast subframes, and the second multicast subframe is adjacent to MCH1.

At the beginning of a dynamic scheduling period, the network side first sends the MBMS service data through the MCH1. When the network side sends the MBMS service data through the MCH1, the MCH1 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH2. When the MCH2 sends the MBMS service data, the MCH2 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH3. When the network side sends the MBMS service data through the MCH3, the scheduling block is carried in the MCH3, and the scheduling block includes the MCH1 of the next cycle. Dynamic scheduling information.

MCH and MCS are - corresponding, that is, MCH1 is only transmitted by MCS1, MCH2 is only used by MCS2, MCH3 is only used by MCS3; MCH2 dynamic scheduling information carried on MCH1 is modulated and encoded by MCS1, and MCH3 carried on MCH2 The dynamic scheduling information is modulated and encoded by MCS2, and the dynamic scheduling information of MCH1 carried on MCH3 is modulated and encoded by MCS3. Embodiment 4 of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 7, in the embodiment of the present invention, each of MCH1, MCH2, and MCH3 corresponds to one dynamic scheduling information, and MCH1, MCH2, and MCH3 are sequentially transmitted in the same dynamic scheduling period. That is, the dynamic scheduling information of the MCH2 is transmitted through the MCH1 of the same dynamic scheduling period, occupying some resources on two adjacent multicast subframes, and the second multicast subframe is separated from the MCH2 by one subframe; dynamic scheduling of the MCH3 The information is transmitted through MCH2 of the same dynamic scheduling period, occupies part of the resources of two adjacent multicast subframes, and the second multicast subframe is separated from MCH3 by one subframe; the dynamic scheduling information of MCH1 passes the last dynamic scheduling. The periodic MCH3 transmission occupies part of resources on two adjacent multicast subframes, and the second multicast subframe is separated from MCH1 by one subframe.

In the embodiment of the present invention, the MCH and the MCS are corresponding to each other, that is, the MCH1 is only transmitted by the MCS1, the MCH2 is only used by the MCS2, and the MCH3 is only used by the MCS3; the dynamic scheduling information of the MCH2 carried on the MCH1 is modulated and encoded by the MCS1. The dynamic scheduling information of MCH3 carried on MCH2 is modulated and encoded by MCS2, and the dynamic scheduling information of MCH1 carried on MCH3 is modulated and encoded by MCS3.

Embodiment 5 of the present invention will be described below with reference to the accompanying drawings. An embodiment of the present invention is described by using three MCHs in a dynamic scheduling period as MCH1, MCH2, and MCH3. In a dynamic scheduling period, the network side sequentially sends MBMS service data to the UE through MCH1, MCH2, and MCH3. The modulation and coding mode corresponding to MCH1 is MCS1, MCH2 corresponds to MCS2, and MCH3 corresponds to MCS3. The length of the dynamic scheduling period is 320ms.

In different dynamic scheduling periods, the dynamic scheduling information of each MCH occupies the number and location of multicast subframes, which may be unchanged or changed. In the embodiment of the present invention, MCH1, MCH2 and MCH3 each correspond to one dynamic scheduling information, and FIG. 8 shows two dynamic scheduling periods, that is, a first dynamic scheduling period and a second dynamic scheduling period. In the first dynamic scheduling period, MCH1, MCH2, and MCH3 are sequentially transmitted. That is, the dynamic scheduling information of the MCH2 is sent through the MCH1 of the same dynamic scheduling period, occupies part of the resources of one multicast subframe, and the multicast subframe is adjacent to the MCH2. The dynamic scheduling information of the MCH3 is sent through the MCH2 of the same dynamic scheduling period. , occupying some resources on two adjacent multicast subframes, and the second multicast subframe is adjacent to MCH3. The dynamic scheduling information of the MCH1 is transmitted through the MCH3 of the last dynamic scheduling period, occupies part of the resources of two adjacent multicast subframes, and the second multicast subframe is adjacent to the MCH1.

In the second dynamic scheduling period, the dynamic scheduling information of the MCH2 is sent through the MCH1 of the same dynamic scheduling period, occupying some resources on two adjacent multicast subframes, and the second multicast subframe and the next dynamic The MCH1 of the scheduling period is adjacent to each other. The dynamic scheduling information of the MCH3 is transmitted through the MCH2 of the same dynamic scheduling period, and occupies a part of resources on one multicast subframe, and the multicast subframe is adjacent to the MCH3. The dynamic scheduling information of the MCH1 is sent by the MCH3 of the first dynamic scheduling period, and occupies a part of resources on one multicast subframe, and the multicast subframe is adjacent to the MCH1.

Embodiment 6 of the present invention will be described below with reference to the accompanying drawings.

The embodiment of the present invention is described by taking three MCHs in a dynamic scheduling period as MCH1, MCH2, and MCH3. In a dynamic scheduling period, the network side sends MBMS service data to the UE through MCH1, MCH2, and MCH3 in sequence. The modulation and coding mode corresponding to MCH1 is MCS1, MCH2 corresponds to MCS2, and MCH3 corresponds to MCS3. The dynamic scheduling period has a duration of 320ms.

Figure 9 shows two dynamic scheduling periods, referred to as a first dynamic scheduling period and a second dynamic scheduling period. In the embodiment of the present invention, each of MCH1, MCH2, and MCH3 corresponds to one dynamic scheduling information, and MCH1, MCH2, and MCH3 are sequentially transmitted in the same dynamic scheduling period.

In the first dynamic scheduling period, the dynamic scheduling information of the MCH2 passes through the same dynamic scheduling period.

The MCH1 sends, occupies a part of the resources of a multicast sub-frame, and the multicast sub-frame is separated from the MCH2 by one subframe. The dynamic scheduling information of the MCH3 is sent by the MCH2 of the same dynamic scheduling period, occupying two adjacent multicast sub-frames. A part of the resources on the frame, and the second multicast subframe is separated from the MCH3 by one subframe. The dynamic scheduling information of the MCH1 is sent by the MCH3 of the last dynamic scheduling period, and occupies some resources on two adjacent multicast subframes. And the second multicast subframe is adjacent to MCH1.

In the second dynamic scheduling period, the dynamic scheduling information of the MCH2 is sent through the MCH1 of the same dynamic scheduling period, occupying some resources on the two multicast subframes, and the second multicast subframe is separated from the MCH2 by one subframe; The dynamic scheduling information is sent through the MCH2 of the same dynamic scheduling period, occupies part of the resources of one multicast subframe, and the multicast subframe is separated from the MCH3 by one subframe. The dynamic scheduling information of the MCH1 is sent through the MCH3 of the last dynamic scheduling period. A part of the resources on one multicast subframe is occupied, and the multicast subframe is separated from the MCH1 by one subframe.

At the beginning of a dynamic scheduling period, the network side first sends the MBMS service data through the MCH1. When the network side sends the MBMS service data through the MCH1, the MCH1 carries the scheduling block. The scheduling block includes the dynamic scheduling information of the MCH2. When the network side sends the MBMS service data through the MCH2, the MCH2 carries the scheduling block, and the scheduling block includes the dynamic scheduling information of the MCH3. When the network side sends the MBMS service data through the MCH3, the MCH3 The scheduling block is carried, and the scheduling block includes dynamic scheduling information of the MCH1 of the next period.

Embodiment 7 of the present invention will be described below with reference to the accompanying drawings.

In this embodiment, there is only one MCH in a cell, and the method for transmitting and receiving dynamic scheduling information of the MCH in a dynamic scheduling period includes:

Step A: The network side configures at least one multicast subframe for the MCH in the dynamic scheduling period; the network side configures allocation of multicast subframes by using a Broadcast Control Channel (BCCH), and the available multicast subframes constitute a multicast The subframe resource pool, the network side allocates a part or all of the multicast subframes in the multicast subframe resource pool to the MCH according to the number of multicast subframes that the MCH needs to occupy, and the MCH occupies the multicast subframe. The information of the frame (such as the starting subframe and the number of persistent multicast subframes) is sent to the user equipment through the MCCH of the MBMS service. The following embodiments are the same.

Step B: The network side allocates a multicast subframe resource for transmitting dynamic scheduling information corresponding to the MCH, before the dynamic scheduling period.

In this step, since there is only one MCH in the dynamic scheduling period, it is sent in the scheduling block of the MCH in the last dynamic scheduling period. In this embodiment, the dynamic scheduling information of the MCH occupies a part of resources in a multicast subframe of the last dynamic scheduling period, and the multicast subframe is adjacent to the multicast subframe corresponding to the MCH in the dynamic scheduling period. , see Figure 10.

Step C: The network side sends the dynamic scheduling information on the multicast subframe resource allocated for the dynamic scheduling information.

In this step, since there is only one MCH in the dynamic scheduling period, when the MCH is sent, The multicast subframe corresponding to the MCH carries a scheduling block, where the scheduling block carries dynamic scheduling information of the MCH in a next dynamic scheduling period.

Step D: The UE receives the dynamic scheduling information carried by the MCH scheduling block, and decodes the MCH scheduling block to obtain dynamic scheduling information of the MCH in the next dynamic scheduling period.

Step E: The UE receives the MBMS service data of the MCH bearer in the next dynamic scheduling period according to the dynamic scheduling information.

In this step, the UE extracts information about the MBMS service of interest according to the dynamic scheduling information of the MCH obtained in the decoding, such as the starting subframe number of the MBMS service data and the number of persistent multicast subframes, in the next dynamic scheduling period. The MCH selectively receives MBMS service data.

Embodiment 8 of the present invention will be described below with reference to the accompanying drawings.

This embodiment has only one MCH in one cell.

Different from the seventh embodiment, in this embodiment, the network side selects two multicast subframes in the multicast resource corresponding to the MCH in the last dynamic scheduling period, and uses the parts on the two multicast subframes. The resource sends the dynamic scheduling information corresponding to the MCH in the dynamic scheduling period, and the second multicast subframe occupied by the dynamic scheduling information is adjacent to the multicast subframe corresponding to the MCH in the dynamic scheduling period, as shown in FIG. 11 . Shown.

The network side sends the dynamic scheduling information corresponding to the MCH in the dynamic scheduling period in the last dynamic scheduling period. After receiving the dynamic scheduling information, the UE receives the MBMS service data carried by the MCH in the dynamic scheduling period.

Embodiment 9 of the present invention will be described below with reference to the accompanying drawings.

This embodiment has only one MCH in one cell.

Different from the seventh embodiment, in this embodiment, the network side selects one multicast subframe in the multicast resource corresponding to the MCH in the last dynamic scheduling period, and uses the partial resource on the multicast subframe to send the packet. The dynamic scheduling information of the MCH in the dynamic scheduling period, the multicast subframe occupied by the dynamic scheduling information is separated from the multicast subframe resource corresponding to the MCH in the dynamic scheduling period by two subframes, as shown in FIG. 12 . The network side sends the dynamic scheduling information corresponding to the MCH in the dynamic scheduling period in the last dynamic scheduling period. After receiving the dynamic scheduling information, the UE receives the MBMS service data carried by the MCH in the dynamic scheduling period.

Embodiment 10 of the present invention will now be described with reference to the accompanying drawings.

This embodiment has only one MCH in one cell.

Different from the seventh embodiment, in this embodiment, the network side selects two multicast subframes in the multicast resource corresponding to the MCH in the last dynamic scheduling period, and uses some resources on the two multicast subframes. The dynamic scheduling information corresponding to the MCH in the dynamic scheduling period is sent, and the second multicast subframe occupied by the dynamic scheduling information is separated from the multicast subframe corresponding to the MCH in the dynamic scheduling period by one subframe, as shown in FIG. Shown.

The network side sends the dynamic scheduling information of the MCH in the dynamic scheduling period in the last dynamic scheduling period. After receiving the dynamic scheduling information, the UE receives the MBMS service data carried by the MCH in the dynamic scheduling period.

The method for transmitting dynamic scheduling information is provided by the foregoing embodiment, and the dynamic scheduling information of the MCH is sent on the multicast resource of the MCH, so that the terminal can learn the dynamic scheduling information of the MCH in advance before receiving the MCH, thereby avoiding The lack of transient dynamic scheduling information of the UE due to the hardware device and the delay caused by the decoding of the data of the terminal increases the accuracy of the UE receiving the MBMS service and saves the power of the UE.

It should be noted that the dynamic scheduling information is sent in the form of a MAC CE. Therefore, for the multicast subframe that sends the dynamic scheduling information, the dynamic scheduling information may be included only in the form of MAC CE. The dynamic scheduling information transmitted in the form of MAC CE includes MBMS service data. In various embodiments of the text, the dynamic scheduling information is part of the resources of the multicast subframe allocated for it, but for other embodiments of the present invention, the dynamic scheduling information may also occupy the multicast allocated for it. All resources of the subframe.

The embodiment of the present invention further provides a device for transmitting dynamic scheduling information, including: a dynamic scheduling information sending module, configured to: before the MCH corresponding to the dynamic scheduling information corresponding to each MCH in the dynamic scheduling period At least one multicast subframe of the corresponding multicast subframe Send it.

Further, the dynamic scheduling information sending module sends the dynamic scheduling information corresponding to each MCH by using resources on at least one multicast subframe of one MCH.

Further, the dynamic scheduling information sending module sends the dynamic scheduling information corresponding to each MCH by using resources on one or two multicast subframes, and the dynamic scheduling information corresponding to each MCH is occupied by multiple The multicast subframe in which the broadcast subframe resource is located is adjacent to or spaced apart from the multicast subframe corresponding to the MCH by at least one subframe.

Further, the dynamic scheduling information sending module is further configured to: when transmitting the dynamic scheduling information corresponding to each MCH, use a modulation code corresponding to the MCH to which the multicast subframe resource occupied by the dynamic scheduling information belongs Way to send.

The device for transmitting the dynamic scheduling information may be an independent device, or may be integrated in a network device such as an eNB (evolved base station) or a BMSC. The foregoing device is only a simple example of a case where a device for transmitting dynamic scheduling information is integrated into a network device. There are many other ways, but the invention is not limited thereto. The apparatus for transmitting dynamic scheduling information according to the embodiment of the present invention may send the dynamic scheduling information of the MCH on the multicast resource of the MCH, so that the terminal can learn the dynamic scheduling information of the MCH in advance before receiving the MCH, thereby avoiding The lack of transient dynamic scheduling information of the UE due to the hardware device and the delay caused by the decoding of the data of the terminal increases the accuracy of the UE receiving the MBMS service and saves the power of the UE.

A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including one or a combination of the steps of the method embodiments.

In addition, each functional unit in each embodiment of the present invention may be implemented in the form of hardware, or may be implemented in the form of a software functional module. The integrated modules, if implemented in the form of software functional modules and sold or used as separate products, may also be stored in a computer readable storage medium.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Industrial Applicability The method and apparatus for transmitting dynamic scheduling information according to an embodiment of the present invention sends dynamic scheduling information of an MCH on a multicast resource preceding the MCH, so that the terminal advances at least one multicast before receiving the MCH. The frame learns the dynamic scheduling information of the MCH, avoids the phenomenon that the short-lived dynamic scheduling information of the UE is lost due to the delay caused by the hardware device and the decoding data of the terminal, increases the accuracy of the UE receiving the MBMS service, and saves the power of the UE.

Claims

Claim

A method for transmitting dynamic scheduling information of a multimedia broadcast and multicast service (MBMS), the method comprising:

During the dynamic scheduling period, each multicast channel (MCH) corresponds to one dynamic scheduling information, and the dynamic scheduling information corresponding to one MCH in the dynamic scheduling period precedes the multicast subframe corresponding to the one MCH. The dynamic scheduling information is sent on at least one multicast subframe.

2. The method for transmitting dynamic scheduling information according to claim 1, wherein

3. The method for transmitting dynamic scheduling information according to claim 2, wherein

4. The method for transmitting dynamic scheduling information according to claim 3, wherein

The method for transmitting dynamic scheduling information according to claim 3 or 4, wherein the multicast subframe resource occupied by the dynamic scheduling information corresponding to the one MCH is on one or two multicast subframes.

6. The method for transmitting dynamic scheduling information according to claim 2, wherein

In the step of transmitting the dynamic scheduling information, the method is performed by using a modulation and coding scheme corresponding to the MCH to which the multicast subframe occupied by the dynamic scheduling information belongs.

A device for transmitting dynamic scheduling information of multimedia broadcast and multicast services, comprising: a dynamic scheduling information sending module, configured to: each multicast channel in a dynamic scheduling period

The dynamic scheduling information corresponding to (MCH) is transmitted on at least one multicast subframe preceding the multicast subframe corresponding to the MCH.

8. The apparatus for transmitting dynamic scheduling information according to claim 7, wherein

9. The apparatus for transmitting dynamic scheduling information according to claim 8, wherein

10. The apparatus for transmitting dynamic scheduling information according to claim 7, wherein