CN101808279B - Method and system for transmitting MBMS (Multimedia Broadcast Multicast Service) control signaling in overlapping region - Google Patents
Method and system for transmitting MBMS (Multimedia Broadcast Multicast Service) control signaling in overlapping region Download PDFInfo
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- CN101808279B CN101808279B CN200910077311.7A CN200910077311A CN101808279B CN 101808279 B CN101808279 B CN 101808279B CN 200910077311 A CN200910077311 A CN 200910077311A CN 101808279 B CN101808279 B CN 101808279B
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Abstract
The invention discloses method and system for transmitting MBMS (Multimedia Broadcast Multicast Service) control signaling in an MBSFN (Multimedia Broadcast Multicast Service Single Frequency Network) overlapping region, used for solving the technical defect that the indication information of a scheduling configuration information of MBMS multi-cell mode control signaling in a plurality of MBSFN areas cannot be indicated simultaneously on the BCCH in a plurality of MBSFN overlapping areas under the restrict of the present protocol. In the invention, the scheduling configuration information of MBMS multi-cell mode control signaling is carried at the relatively identical physical resource position of the MBMS physical resource of each MBSFN area in the MBSFN overlapping areas and sent to a terminal, and the terminal can acquire the mapping position of the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area in the MBSFN overlapping areas according to the relatively identical physical resource position. The invention can realize the technical effects of lowest expenditure and maximized effective combining range of the P-MCCH in the MBSFN area multi-cell mode under the condition of satisfying the present LTE (Long Term Evolution) requirement.
Description
Technical Field
The present invention relates to a Long Term Evolution (LTE) system, and in particular, to a method and a system for transmitting a Multimedia Broadcast/multicast Service (MBMS) control signaling in an MBSFN (Multimedia Broadcast multicast Service) overlapping area.
Background
With the rapid development of the Internet and the popularization of large-screen multifunctional mobile phones, a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as video conferences, television broadcasts, video on demand, advertisements, online education, interactive games, etc., have appeared, which, on the one hand, meet the ever-increasing service demands of mobile users and, at the same time, bring new service growth points for mobile operators. These mobile data multimedia services require that multiple users can receive the same data at the same time, and compared with general data services, the mobile data multimedia services have the characteristics of large data volume, long duration, time delay sensitivity and the like.
In order to effectively utilize mobile network resources, the third generation partnership Project (3 GPP) proposes an MBMS service, which is a technology for transmitting data from one data source to a plurality of destinations, and implements sharing of network (including core network and access network) resources and improves utilization of network resources (especially air interface resources). The MBMS defined by 3GPP can not only implement plain text low-rate message multicast and broadcast, but also implement broadcast and multicast of high-speed multimedia services, and provide various rich video, audio, and multimedia services, which undoubtedly follows the development trend of future mobile data, and provides better service prospects for the development of 3G.
In LTE, MBMS service transmission over an air interface is divided into two modes, a dedicated carrier and a mixed carrier. The main differences between the two transmission modes are: a special carrier mode, wherein the carrier only bears the MBMS service; in the mixed carrier mode, the carrier not only carries the MBMS service, but also carries a non-MBMS service (e.g., unicast service). Thus, in the process of carrying the MBMS service in the mixed carrier manner, there is a case where the two types of services multiplex the same carrier. How to make the two types of services not interfere with each other and to exert the maximum effect in the service transmission process. In the process of using a mixed carrier to carry the MBMS service and the non-MBMS service in LTE, the two types of services use a Time-Division Multiplexing (TDM) method to multiplex the same carrier.
For an MBSFN area, a certain physical resource is allocated to bear the MBMS service of the MBSFN area by an MBMS resource allocation method. As shown in fig. 1, a shaded portion in the figure is an MBMS service resource allocated to a certain MBSFN area by using an existing MBMS service resource allocation scheme, and a horizontal direction is a time coordinate axis and a vertical direction is a frequency coordinate axis. Existing allocation schemes are divided into radio frame level allocation and subframe level allocation. The radio frame adopts MBMS frame period and MBMS frame offset to describe the distribution scheme, and the subframe level uses bitmap to describe which subframes in the distributed MBMS radio frame are used for bearing MBMS service. And one MBMS service repetition period is 32 radio frame durations, and the resource allocation method describes the MBMS resource allocation condition in one MBMS service repetition period at a time.
For the MBSFN overlapping coverage area, as shown in fig. 3, two MBSFN areas are overlapped, the physical resource allocation of MBSFN area 1 is shown in fig. 1, and the physical resource allocation of MBSFN area 2 is shown in fig. 2, so in the overlapping area shown in fig. 3, the physical resource for carrying the MBMS service is the sum of the resources of MBSFN area 1 and MBSFN area 2, and in the overlapping area, the physical resources from these 2 MBSFN areas are divided in units of subframes without interference. Figure 4 is a schematic diagram of physical resources of an MBMS service in an overlapping area,
physical resources allocated for the MBMS service indicating the MBSFN area 1,
indicating the physical resources allocated by the MBSFN area 2 for the MBMS service. It can be seen that there are 4 MBMS radio frames in MBSFN area 1 in one MBMS service repetition period, each MBMS radio frame includes 3 MBMS subframes, for convenience of describing resources for transmitting MBMS service in one period, the MBMS radio frames in MBSFN area 1 are numbered from left to right according to the figure as #1, #2, #3, #4, and the subframes for MBMS service are numbered as #1 to # 12. Similarly, in the MBSFN area 2 of one MBMS repetition period, the MBMS radio frames are numbered as #1, #2, #3, #4, and the subframes for MBMS service are numbered as #1 to # 8.
The terminal can acquire the number of radio frames used for sending the MBMS in each MBSFN area in an MBMS repetition period (32 radio frame durations); the number of subframes used for transmitting the MBMS service in each MBSFN area can also be known in a MBMS service repetition period (32 radio frame durations).
The Physical resources allocated to one MBSFN area for transmitting the MBMS service constitute a Physical Multicast Channel, which is called PMCH (Physical Multicast Channel), and a transport Channel for carrying the MBMS service is called MCH (Multicast Channel).
In LTE, the design of MCCH (Multicast Control Channel) is divided into P-MCCH (Primary MCCH) and S-MCCH (Secondary MCCH) for respectively carrying Primary and Secondary Multicast Control Channel signaling. Scheduling information indicating one or two P-MCCH (one scheduling configuration information for single cell mode is transmitted on the DL-SCH and one scheduling configuration information for multi-cell mode is transmitted on the MCH) is specified on the BCCH (Broadcast Control CHannel) in LTE.
In the MBSFN overlapping areas, each MBSFN area has the P-MCCH of the multi-cell mode, but according to the existing LTE protocol, the P-MCCH scheduling information of two multi-cell modes cannot be indicated on the BCCH at the same time, so that the cell in the MBSFN overlapping coverage area cannot indicate the P-MCCH scheduling information on the BCCH.
Disclosure of Invention
In view of the above, one of the main objectives of the present invention is to provide a method for transmitting MBMS service overlay area control signaling, which is used to solve the technical defect that the indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling for multiple MBSFN areas cannot be indicated on the BCCH of a cell simultaneously in the multiple MBSFN overlay coverage areas under the constraint specified by the existing protocol.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for transmitting MBMS service overlapping area control signaling, the method includes:
in the MBSFN overlapping coverage area of the MBMS, the scheduling configuration information of the MBMS multi-cell mode control signaling is carried and sent on the relatively consistent physical resource position in the MBMS physical resource of each MBSFN area.
Further, the transmission method further includes:
and forming the same indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling according to the relatively consistent physical resource positions, and sending the indication information on a broadcast control channel BCCH of a cell belonging to the MBSFN overlapping coverage area.
Further, the transmission method further includes:
and acquiring the scheduling configuration information of the MBMS service multi-cell mode control signaling of the MBSFN area in the MBMS service physical resource of each MBSFN area according to the indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling.
Further, the step of sending the scheduling configuration information of the MBMS service multi-cell mode control signaling is:
a1, acquiring MBMS service physical resource information of each MBSFN area in the MBSFN overlapping coverage area;
a2, determining the relatively consistent physical resource position according to the MBMS service physical resource information of the MBSFN area;
a3, the cell belonging to the MBSFN area maps the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area on the MBMS physical resource of the corresponding MBSFN area according to the relatively consistent physical resource position and sends the scheduling configuration information.
Further, the step that the terminal obtains the scheduling configuration information of the MBMS service multi-cell mode control signaling in the MBSFN area is:
c1, obtaining the relative consistent physical resource position from the indication information of MBMS service multi-cell mode control signaling scheduling configuration information sent by BCCH;
c2, converting the relatively consistent physical resource positions into actual physical resource positions of the MBMS in each MBSFN area;
and C3, obtaining the scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area at the position of the actual physical resource.
Further, the scheduling configuration information of the MBMS multi-cell mode control signaling at least includes scheduling configuration information of a main multicast control channel P-MCCH in a multi-cell mode.
Further, the relatively consistent physical resource locations refer to:
the positions of radio frames with the same offset in a radio frame group formed by the MBMS radio frames in each MBMS service repetition period of each MBSFN area are located; or,
the position of a sending time window with the same offset in a wireless frame group formed by MBMS wireless frames in each MBMS repetition period of each MBSFN area; or,
the positions of multicast subframes with the same offset in a multicast subframe group consisting of the multicast subframes in the MBMS wireless frame in each MBMS repetition period of each MBSFN area are located; or,
the positions of the physical resource blocks with the same offset position on the multicast subframes with the same offset in the multicast subframe group consisting of the multicast subframes used for sending the MBMS in each MBMS repetition period of each MBSFN area are located.
Another object of the present invention is to provide a system for transmitting MBMS service overlay area control signaling, in order to achieve the above object, the technical solution of the present invention is implemented as follows:
a system for transmitting MBMS service overlay area control signaling, comprising:
the mapping module is used for bearing the scheduling configuration information of the MBMS multi-cell mode control signaling on the relatively consistent physical resource position in the MBMS physical resources of each MBSFN area;
and the transmission module is used for forming the same indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling according to the relatively consistent physical resource position transmitted by the mapping module and transmitting the indication information on the BCCH of the cell belonging to the MBSFN area.
Further, the mapping module includes:
the position acquisition module is used for acquiring the MBMS physical resource information of each MBSFN area in the MBSFN overlapping coverage area;
a position determining module, configured to determine the relatively consistent physical resource position according to the MBMS service physical resource information of each MBSFN area transmitted by the position acquiring module;
and the position mapping module is used for mapping the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area to the MBMS physical resources of the corresponding MBSFN area by the cell belonging to the MBSFN area according to the relatively consistent physical resource position transmitted by the position determining module.
Further, the relatively consistent physical resource locations refer to:
the positions of radio frames with the same offset in a radio frame group formed by the MBMS radio frames in each MBMS service repetition period of each MBSFN area are located; or,
the position of a sending time window with the same offset in a wireless frame group formed by MBMS wireless frames in each MBMS repetition period of each MBSFN area; or,
the positions of multicast subframes with the same offset in a multicast subframe group consisting of the multicast subframes in the MBMS wireless frame in each MBMS repetition period of each MBSFN area are located; or,
and the positions of the physical resource blocks with the same offset position on the multicast subframes with the same offset position in the multicast subframe group consisting of the multicast subframes used for sending the MBMS in each MBMS repetition period of each MBSFN area.
Further, the scheduling configuration information of the MBMS multi-cell mode control signaling at least includes scheduling configuration information of a main multicast control channel P-MCCH in a multi-cell mode.
Another object of the present invention is to provide a receiving system for MBMS service overlap area control signaling, in order to achieve the above object, the technical solution of the present invention is implemented as follows:
a receiving device for MBMS service overlapping area control signaling comprises:
a relative position obtaining module, configured to obtain the relatively consistent resource position from the indication information of the MBMS multi-cell mode control signaling scheduling configuration information;
a position conversion module, configured to convert the relatively consistent resource positions sent by the relative position acquisition module into actual physical resource positions where the MBMS services in each MBSFN area are located;
and the configuration acquisition module is used for acquiring the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area according to the actual physical resource position sent by the position conversion module.
Further, the relatively consistent physical resource locations refer to:
the positions of radio frames with the same offset in a radio frame group formed by the MBMS radio frames in each MBMS service repetition period of each MBSFN area are located; or,
the position of a sending time window with the same offset in a wireless frame group formed by MBMS wireless frames in each MBMS repetition period of each MBSFN area; or,
the positions of multicast subframes with the same offset in a multicast subframe group consisting of the multicast subframes in the MBMS wireless frame in each MBMS repetition period of each MBSFN area are located; or,
and the positions of the physical resource blocks with the same offset position on the multicast subframes with the same offset position in the multicast subframe group consisting of the multicast subframes used for sending the MBMS in each MBMS repetition period of each MBSFN area.
Further, the scheduling configuration information of the MBMS multi-cell mode control signaling at least includes scheduling configuration information of a main multicast control channel P-MCCH in a multi-cell mode.
In the technical scheme of the invention, in the MBSFN overlapping coverage area, the physical resources mapped by the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area are relatively consistent, and the terminal can know the mapping position of the scheduling configuration information of the MBMS multi-cell mode control signaling of all MBSFN areas after knowing the indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling of any MBSFN area to which the terminal belongs.
Drawings
Fig. 1 is a schematic diagram of MBMS service resource allocation of an MBSFN area 1 in one cycle in an embodiment;
fig. 2 is a schematic diagram of MBMS service resource allocation of an MBSFN area 2 in one cycle in the embodiment;
FIG. 3 is a diagram illustrating an embodiment of an overlapping coverage of MBSFN area 1 and MBSFN area 2;
fig. 4 is a schematic diagram of MBMS service resource allocation in an overlapping coverage area in an embodiment;
fig. 5 is a flowchart of a method for transmitting MBMS service overlap area control signaling according to the present invention;
fig. 6 is a structural diagram of a MBMS service overlap area control signaling transmission system according to the present invention.
Detailed Description
Based on the current configuration method of MBMS service resources in LTE, in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.
Fig. 5 is a flowchart of a method for transmitting MBMS service overlap area control signaling according to the present invention, which includes the following specific steps:
step 510, in the MBSFN overlapping coverage area, the network side performs signaling configuration, and carries the scheduling configuration information of the MBMS multi-cell mode control signaling on the relatively consistent physical resource position in the MBMS physical resource of each MBSFN area;
the scheduling configuration information of the MBMS multi-cell mode control signaling comprises scheduling configuration information of a main multicast control channel P-MCCH in a multi-cell mode, a secondary multicast control channel S-MCCH in the multi-cell mode and a multicast control channel MCCH.
The method comprises the following steps:
step 511, acquiring the MBMS physical resource information of each MBSFN area in the MBSFN overlapping coverage area;
in this step, the base station can obtain the number of MBSFN areas in the overlapped coverage area and the physical resource information of the MBMS service allocated to each MBSFN area through a broadcast channel, where the physical resource information of the MBMS service refers to information such as the position and number of MBMS radio frames.
As shown in fig. 3, in the present embodiment, 2 MBSFN areas are taken as an example, one is named as MBSFN area 1, and the other is named as MBSFN area 2. Fig. 4 shows a schematic diagram of physical resource allocation of an MBMS service in an MBSFN overlapping coverage area MBMS service repetition period (32 radio frame durations) in this embodiment, where in an MBMS service repetition period, the physical resources of the MBMS service in an MBSFN area 1 are 4 MBMS radio frames, and each MBMS radio frame includes 3 MBMS multicast subframes; the physical resources of the MBMS service in MBSFN area 2 are 4 MBMS radio frames, each MBMS radio frame contains 2 MBMS multicast subframes.
Step 512, determining a physical resource position relatively consistent to all MBSFN areas in the MBMS overlapping area according to the MBMS physical resource information of each MBSFN area
In this step, a relatively consistent MSMS service physical resource location of scheduling configuration information for carrying MBMS service multi-cell mode control signaling, which meets the MBMS service physical resource allocation requirement of all MBSFN areas, is determined according to the MBMS service physical resource information of each MBSFN area in the MBMS service overlapping area.
For convenience of description, in this embodiment, the MBMS physical resource allocation in fig. 4 is used as an example, and all MBMS radio frames in an MBMS service repetition period of an MBSFN area 1 are sequentially numbered to form a radio frame group, where the numbers are #1, #2, #3, and #4 from left to right, and all MBMS multicast subframes in the MBMS service repetition period in the MBSFN area 1 are extracted to form a multicast subframe group, and the numbers are #1, #2, #3, #4, #5, #6, #7, #8, #9, #10, #11, and #12 from left to right. Similarly, all MBMS radio frames in the MBMS service repetition period of MBSFN area 2 are extracted to form a radio frame group, the numbers are #1, #2, #3 and #4 from left to right, all MBMS multicast subframes in the MBMS service repetition period of MBSFN area 1 are extracted to form a multicast subframe group, and the numbers are #1, #2, #3, #4, #5, #6, #7 and #8 from left to right.
And in the first mode, the position of a radio frame with the same offset in a radio frame group formed by the MBMS radio frames of all MBSFN areas in the MBMS service overlapping area is taken as the relatively consistent physical resource position.
As shown in fig. 4, if the #1 MBMS radio frame in the radio frame group is used as the mapping position of the scheduling configuration information of the MBMS service multi-cell mode control signaling, the relatively consistent MBMS service physical resource position may be expressed by an offset 0, because the terminal may acquire the scheduling configuration information of the MBMS service multi-cell mode control signaling from the position of the same offset in the MBMS radio frame group of each MBSFN area by knowing the offset.
The limitation condition of the method is that the offset is required to be smaller than the minimum value in the total number of MBMS radio frames of each MBSFN area in the MBMS service overlapping area. Taking fig. 4 as an example, since the number of MBMS radio frames in both MBSFN areas is 4, the offset must be less than 4, otherwise the MBMS radio frames would exceed the range of the radio frame group during mapping.
And secondly, taking the position of the multicast subframe with the same offset in a multicast subframe group consisting of the multicast subframes in the MBMS wireless frame of each MBSFN area as the relatively consistent physical resource position.
As shown in fig. 4, if the #3 multicast subframe in the multicast subframe group is used as the mapping position of the scheduling configuration information of the MBMS service multi-cell mode control signaling, the relatively consistent MBMS service physical resource position may be expressed by an offset 2, because the terminal may acquire the scheduling configuration information of the MBMS service multi-cell mode control signaling from the position of the same offset in the multicast subframe group of each MBSFN area by knowing the offset.
The limitation condition of the method is that the offset is required to be smaller than the minimum value of the total number of MBMS wireless multicast subframes of each MBSFN area in the MBMS service overlapping area. Taking fig. 4 as an example, the total number of MBMS radio multicast subframes in MBSFN area 1 is 12, while the total number of MBMS radio multicast subframes in MBSFN area 2 is 8, therefore, the offset is necessarily less than 8, otherwise the mapping position would exceed the range of the multicast subframe group in MBSFN area 2.
And thirdly, taking the position of the physical resource block at the same offset position on the multicast subframe group consisting of the multicast subframes used for sending the MBMS service in each MBSFN MBMS wireless frame as the relatively consistent physical resource position.
The only difference between this method and the second method is that the mapping position is selected on a specific physical resource Block in the determined multicast subframe, for example, on the 5 th Physical Resource Block (PRB) on the #1 multicast subframe.
And fourthly, taking the position of the transmission time window with the same offset in the MBMS wireless frame of each MBSFN area as the relatively consistent physical resource position.
The first difference between the method and the first method is that two factors, namely offset and window length of a transmission time window, are required to determine a mapping position, the offset is used for determining a starting position of the transmission time window, and the window length of the transmission time window is used for determining a number range of continuous multicast subframes where scheduling configuration information of MBMS service multi-cell mode control signaling is likely to be mapped. The advantage of adopting the transmission time window is that the transmission time of the scheduling configuration information of the MBMS multi-cell mode control signaling in each MBSFN area is more flexible, the scheduling configuration information can be transmitted only in the time window, and the terminal can detect the scheduling configuration information in the transmission time window.
In order to reduce overhead, in a preferred embodiment of the present invention, the position of the transmission time window is determined by the offset of the MBMS radio frame and the default window start position of the system. For example, if the offset is 1, the default window start position is 1, and the window length is 3, the transmission time window is 3 consecutive multicast subframes beginning with the first multicast subframe of the 2 nd MBMS radio frame.
Step 513, the cell belonging to the MBSFN area maps the scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area on the MBMS service physical resource of the corresponding MBSFN area according to the relatively consistent physical resource position and transmits the mapping configuration information.
Step 520, the base station forms the same indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling according to the relatively consistent physical resource position, and sends the indication information to the terminal on the BCCH of the cell belonging to the MBSFN area;
since the relative positions are consistent, the indication information of the formed scheduling configuration information is also the same, for example, if the relatively consistent physical resource positions are determined in the first mode, only the offset needs to be included in the indication information of the scheduling configuration information.
The method comprises the following steps:
step 531, the terminal obtains the relatively consistent physical resource location from the indication information of the MBMS multi-cell mode control signaling scheduling configuration information sent by the BCCH.
The terminal knows how many MBSFN areas are overlapped and covered under the current scene of overlapped coverage of the MBSFN areas through a broadcast channel, and each MBSFN area is information such as physical resources distributed by MBMS service. The terminal receives the indication information of the MBMS multi-cell mode control signaling scheduling configuration information from the BCCH channel and analyzes the relatively consistent physical resource position of the MBMS multi-cell mode control signaling scheduling configuration information from the indication information.
Step 532, the terminal converts the relatively consistent physical resource positions into actual physical resource positions of the MBMS services in each MBSFN area;
step 533, the terminal obtains scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area at the actual physical resource location.
The terminal can convert the relative consistent physical resource position into the actual physical resource position in each MBSFN area, and obtains the scheduling configuration information of the MBMS multi-cell mode control signaling through the actual physical resource position.
The method can realize the indication of the scheduling configuration information of the MBMS service multi-cell mode control signaling in a plurality of MBSFN overlapping coverage areas of the MBMS service, and because the mapping of the scheduling configuration information of the MBMS service multi-cell mode control signaling in each MBSFN area in the overlapping areas has consistency, the terminal can know the mapping positions of the scheduling configuration information of the MBMS service multi-cell mode control signaling in all MBSFN areas only by the indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling in one MBSFN area on the BCCH, thereby reducing the signaling overhead on the BCCH.
Fig. 6 is a structural diagram of a transmission system for MBMS service overlap area control signaling according to the present invention, where the system includes a mapping module, a transmission module, and an acquisition module. The mapping module and the transmission module are positioned at a network side, and the acquisition module is positioned at a terminal side.
The mapping module is used for bearing the scheduling configuration information of the MBMS multi-cell mode control signaling on a relatively consistent physical resource position in MBMS physical resources of the MBSFN area; the transmission module is used for forming the same indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling according to the relatively consistent physical resource position transmitted by the mapping module and transmitting the indication information on the BCCH of the cell belonging to the MBSFN area; the acquiring module is used for acquiring the scheduling configuration information of the MBMS service multi-cell mode control signaling of the MBSFN areas in the MBMS service physical resources of the MBSFN areas according to the indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling transmitted by the transmitting module.
The mapping module comprises a position obtaining module, a position determining module and a position mapping module. The position acquisition module is used for acquiring the MBMS physical resource information of each MBSFN area in the MBSFN overlapping coverage area; the position determining module is used for determining the relatively consistent physical resource position according to the MBMS service physical resource information of each MBSFN area transmitted by the position acquiring module; the position mapping module is used for mapping the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area to the MBMS physical resources of the corresponding MBSFN area by the cell belonging to the MBSFN area according to the relatively consistent physical resource position transmitted by the position determining module.
The acquisition module comprises a relative position acquisition module, a position conversion module and a configuration acquisition module. The relative position acquisition module is used for acquiring the relatively consistent resource position from the indication information of the MBMS service multi-cell mode control signaling scheduling configuration information sent by the transmission module; the position conversion module is used for converting the relatively consistent resource positions transmitted by the relative position acquisition module into actual physical resource positions where the MBMS of each MBSFN area is located; the configuration acquisition module is used for acquiring the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area according to the actual physical resource position sent by the position conversion module.
The system of the invention can ensure that the terminal in the MBSFN overlapping coverage area can acquire the scheduling configuration information of the MBMS multi-cell mode control signaling of all MBSFN areas through the indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling of any MBSFN area received on the BCCH of the cell belonging to the MBSFN, thereby ensuring the effective merging range maximization of the P-MCCH of the multi-cell mode of each MBSFN area with the minimum cost on the premise of meeting the requirement of the existing LTE protocol and avoiding the generation of MBSFN merging edges.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for transmitting MBMS service overlapping area control signaling is characterized in that the method comprises:
in the MBSFN overlapping coverage area of the multimedia broadcast multicast service single frequency network, carrying and sending scheduling configuration information of MBMS multi-cell mode control signaling on relatively consistent physical resource positions in multimedia broadcast/multicast service MBMS physical resources of each MBSFN area;
the step of sending the scheduling configuration information of the MBMS multi-cell mode control signaling comprises the following steps:
a1, acquiring MBMS service physical resource information of each MBSFN area in the MBSFN overlapping coverage area;
a2, determining the relatively consistent physical resource position according to the MBMS service physical resource information of the MBSFN area;
a3, the cell belonging to the MBSFN area maps the scheduling configuration information of the MBMS multi-cell mode control signaling of each MBSFN area on the MBMS physical resource of the corresponding MBSFN area according to the relatively consistent physical resource position and sends the scheduling configuration information;
the A2 is as follows:
taking the position of a sending time window with the same offset in the MBMS wireless frame of each MBSFN area as the relatively consistent physical resource position;
the method further comprises the following steps: and determining the position of the transmission time window according to the offset of the MBMS wireless frame and the default window starting position of the system.
2. The method of claim 1,
the method further comprises the following steps:
and forming the same indication information of the scheduling configuration information of the MBMS multi-cell mode control signaling according to the relatively consistent physical resource positions, and sending the indication information on a broadcast control channel BCCH of a cell belonging to the MBSFN overlapping coverage area.
3. The method of claim 2, further comprising:
and acquiring the scheduling configuration information of the MBMS service multi-cell mode control signaling of the MBSFN area in the MBMS service physical resource of each MBSFN area according to the indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling.
4. The method of claim 3, wherein the step of the terminal obtaining the scheduling configuration information of the MBMS service multi-cell mode control signaling of the MBSFN area comprises:
c1, obtaining the relative consistent physical resource position from the indication information of MBMS service multi-cell mode control signaling scheduling configuration information sent by BCCH;
c2, converting the relatively consistent physical resource positions into actual physical resource positions of the MBMS in each MBSFN area;
and C3, obtaining the scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area at the position of the actual physical resource.
5. The method of claim 1, wherein the scheduling configuration information of the MBMS service multi-cell mode control signaling at least comprises scheduling configuration information of a primary multicast control channel P-MCCH in multi-cell mode.
6. A system for transmitting MBMS service overlap area control signaling, comprising:
the mapping module is used for bearing the scheduling configuration information of the MBMS multi-cell mode control signaling on the relatively consistent physical resource position in the MBMS physical resources of each MBSFN area;
a transmission module, configured to form the same indication information of the scheduling configuration information of the MBMS service multi-cell mode control signaling according to the relatively consistent physical resource location transmitted by the mapping module, and send the indication information on the BCCH of the cell belonging to the MBSFN area;
the mapping module includes:
the position acquisition module is used for acquiring the MBMS physical resource information of each MBSFN area in the MBSFN overlapping coverage area;
a position determining module, configured to determine the relatively consistent physical resource position according to the MBMS service physical resource information of each MBSFN area transmitted by the position acquiring module;
a position mapping module, configured to map, by the cell belonging to the MBSFN area, the scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area onto the MBMS service physical resource of the corresponding MBSFN area according to the relatively consistent physical resource position transmitted by the position determining module;
the position determining module is specifically configured to use a position where a transmission time window with the same offset is located in an MBMS radio frame of each MBSFN area as the relatively consistent physical resource position; and the method is also used for determining the position of the transmission time window according to the offset of the MBMS wireless frame and the default window starting position of the system.
7. The transmission system according to claim 6, wherein the scheduling configuration information of the MBMS service multi-cell mode control signaling comprises at least scheduling configuration information of a primary multicast control channel P-MCCH of a multi-cell mode.
8. A receiving apparatus for MBMS service overlap area control signaling, comprising:
a relative position obtaining module, configured to obtain a relatively consistent physical resource position from the indication information of the MBMS multi-cell mode control signaling scheduling configuration information;
a position conversion module, configured to convert the relatively consistent physical resource position sent by the relative position acquisition module into an actual physical resource position where the MBMS service in each MBSFN area is located;
a configuration obtaining module, configured to obtain scheduling configuration information of the MBMS service multi-cell mode control signaling of each MBSFN area according to the actual physical resource location sent by the location converting module;
wherein the relatively consistent physical resource locations refer to:
the positions of radio frames with the same offset in a radio frame group formed by the MBMS radio frames in each MBMS service repetition period of each MBSFN area are located; or,
the position of a sending time window with the same offset in a wireless frame group formed by MBMS wireless frames in each MBMS repetition period of each MBSFN area; or,
the positions of multicast subframes with the same offset in a multicast subframe group consisting of the multicast subframes in the MBMS wireless frame in each MBMS repetition period of each MBSFN area are located; or,
and the positions of the physical resource blocks with the same offset position on the multicast subframes with the same offset position in the multicast subframe group consisting of the multicast subframes used for sending the MBMS in each MBMS repetition period of each MBSFN area.
9. The receiving apparatus of claim 8, wherein the scheduling configuration information of the MBMS service multi-cell mode control signaling at least comprises scheduling configuration information of a primary multicast control channel P-MCCH in multi-cell mode.
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