CN101964943B - Method for acquiring multicast broadcast service - Google Patents

Method for acquiring multicast broadcast service Download PDF

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Publication number
CN101964943B
CN101964943B CN200910089725.1A CN200910089725A CN101964943B CN 101964943 B CN101964943 B CN 101964943B CN 200910089725 A CN200910089725 A CN 200910089725A CN 101964943 B CN101964943 B CN 101964943B
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subframe
superframe
multicast broadcast
indication
subframes
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CN101964943A (en
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姚珂
吕开颖
石晓娟
李楠
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2010/074403 priority patent/WO2011009363A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method for acquiring multicast broadcast service. The method selects the organizing mode of an appropriate enhanced multicast broadcast service map (E-MBS MAP) according to needs, flexibly allocates resources for multicast objects under different conditions, and realizes the optimal compromise between resources allocation flexibility and expenses. In the next generation of WiMAX system, by using the E-MBS MAP indication determined by the invention, the terminal acquires E-MBS resources, thereby ensuring the popularization of multicast broadcast service.

Description

Method for obtaining multicast broadcast service
Technical Field
The present invention relates to multicast broadcasting technology, and is especially method of obtaining multicast broadcasting service in the next generation of worldwide Interoperability for Microwave Access (WiMAX) system.
Background
Multicast Broadcast Service (MBS) is a technology for transmitting data from one data source to multiple targets, and can improve the utilization of network resources, especially air interface resources. With the application and popularization of multimedia sharing services, multicast broadcast service transmission is performed efficiently, which becomes especially important for next generation broadband mobile communication systems.
The MBS service based on WiMAX supports two access modes: single base station access mode and multiple base station access mode. In the multi-base station access mode, an MBS zone (MBS zone) represents a set of base stations, and each MBS zone corresponds to an MBS zone identification (MBS zone ID). One base station may belong to a plurality of MBS zones simultaneously; when sending MBS service, the base stations belonging to the same MBS zone can carry out macro diversity, that is, the MBS service with the same content is sent on the same time-frequency resource, thus, the terminal can obtain macro diversity gain when receiving.
In order to satisfy the service application of high performance and low delay in the next generation broadband mobile communication system, the frame structure in the WiMAX air interface evolution standard 802.16m adopts a three-layer design mode of superframes, frames and subframes. Fig. 1 is a schematic diagram illustrating a frame structure in an existing standard 802.16m, as shown in fig. 1, each super-frame 101 is composed of four frames 102, a frame header 103 is further disposed before a first frame, each frame 102 is composed of eight sub-frames 104, and each sub-frame further includes six symbols 105.
In the next generation WiMAX technology, the Multicast Broadcast Service is called Enhanced-Multicast Broadcast Service (E-MBS), and the MBS zone is called Enhanced MBS zone (E-MBS zone) in the next generation WiMAX technology. In addition, in the next generation WiMAX technology, the system introduces multiple carriers, and the bearer of the E-MBS service can adopt two modes: one is a special carrier mode, i.e. the E-MBS monopolizes all time-frequency resources on a certain carrier; the other is a carrier sharing mode, namely the E-MBS service and the unicast service share the time-frequency resource on the carrier. This document relates to a shared carrier approach.
In the next generation WiMAX technology, the MBS resource allocation indication comprises two parts of an indication of an E-MBS zone (E-MBSregion) and an indication of an E-MBS MAP (E-MBS MAP). The indication of the E-MBS zone is used for describing the distribution of MBS subframes on a plurality of superframes, and the MBS subframes can belong to one E-MBS zone or a plurality of E-MBS zones; the E-MBS MAP is used for further indicating the multicast resource allocation condition and describing the specific resources of each multicast broadcast service or each multicast broadcast service component of one E-MBS zone in one scheduling interval.
Currently, there is no specific implementation on how to determine the E-MBS MAP so that the terminal can obtain the E-MBS resources.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method for acquiring a multicast broadcast service, which can ensure that a terminal acquires an E-MBS resource through a determined E-MBS MAP indication in a next generation WiMAX system.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for obtaining multicast broadcast service, predetermine the multicast broadcast service resource indication; the terminal acquires the multicast broadcast service from the appointed resource position according to the received multicast broadcast service resource indication;
the determining the multicast broadcast service resource indication comprises: indicating location information of an enhanced multicast broadcast service map E-MBSMAP; and indicating the allocation information used for indicating the multicast broadcast service resources in the E-MBS MAP.
The method for indicating the position information of the E-MBS MAP comprises the following steps: and indicating by using the information unit of the secondary super frame header or a default mode.
The allocation information in the E-MBS MAP for indicating the multicast broadcast service resources at least comprises: an indication of resource allocation information for respective objects in the E-MBSMAP describing location information and control information for resources allocated to each object, and,
an indication of a location of a next E-MBS MAP for describing a superframe location of a secondary superframe header of a next E-MBS MAP location.
The allocation information for indicating the multicast broadcast service resources in the E-MBS MAP further includes: and the indication of the resource position allocated by the E-MBS MAP is used for describing the positions of all resources to be allocated by the E-MBS MAP to a subframe level.
The location information of the resource includes:
when the granularity of allocating resources to each object by the E-MBS MAP is a subframe,
the specific location information of the resource allocated to each object includes location information of all subframes of the resource allocated to the object;
when the granularity of allocating resources for each object by the E-MBS MAP is a resource block RB,
the specific position information of the resource allocated to each object comprises the position information of all sub-frames of the resource allocated to the object and the position information of a resource block RB in each sub-frame; the RB position information in the subframe comprises RB start and stop positions in the subframe; or the RB position information in the subframe comprises an RB starting position in the subframe and the number of RBs distributed in the subframe;
the position information of the subframe comprises a superframe offset in an indication range of the E-MBS MAP, a frame number in the superframe and a subframe number in the frame.
The method further comprises the following steps: logically connecting the resources described to the subframe level, and distributing resources for each object in the logically connected subframe set; the location information of the resource comprises:
when the granularity of allocating resources to each object by the E-MBS MAP is a subframe,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the offset of the ending subframe relative to the starting position of the logically connected multicast broadcast service subframe; or,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the number of the allocated subframes;
when the granularity of allocating resources for each object by the E-MBS MAP is a resource block RB,
the resource location information allocated to each object includes: resource starting point position information, resource ending point position information, wherein,
the resource starting position information and the resource ending position information are corresponding sub-frames and RB offsets; or,
the resource starting point position information and the resource ending point position information are as follows: and the corresponding starting point and ending point RB are offset relative to the starting RB of the whole E-MBS MAP to-be-allocated logically-connected subframe resource.
The control information of the resource comprises a power control parameter and a Modulation and Coding Scheme (MCS) parameter.
The indication of the position of the next E-MBS MAP is described by adopting a direct indication mode or an indirect indication mode;
when a direct indication mode is adopted, the indication of the position of the next E-MBS MAP is the specific position information of the next E-MBS MAP; the specific position information comprises the positions and the number of superframes, subframes and resource blocks;
when an indirect indication mode is adopted, the indication of the position of the next E-MBS MAP is the superframe position of the auxiliary superframe head of the position of the next E-MBS MAP; the superframe position information is superframe number or superframe offset relative to the current superframe.
The determined subframe location information includes:
an N-bit superframe bitmap for indicating whether superframes within the indication range of the E-MBS MAP contain multicast broadcast subframes; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
wherein N is the number of superframes of the indication range of the E-MBS MAP and is a positive integer; m is a positive integer.
The determined subframe location information includes:
a start offset of a superframe allocation for indicating an offset from a start position of an E-MBS MAP indication range; the number of superframe allocations; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
the superframe containing multicast broadcast subframes is a number of superframes of a continuous superframe allocation starting from a starting offset position of the superframe allocation.
The determined subframe location information includes:
a start offset of a superframe allocation for indicating an offset from a start position of the E-MBS MAP indication range; a period of superframe allocation; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
the superframe containing the multicast broadcast subframe is a superframe which is distributed at intervals of a superframe distribution period from a starting offset position of the superframe distribution.
The resources in N superframes in the E-MBS MAP indication range are described in a segmented mode, and the length of each segment is L superframes;
the determined subframe location information comprises indication information of all segments in an E-MBS MAP indication range, wherein the indication information of each segment comprises:
an indication that a 1-bit superframe, which indicates whether multicast broadcast subframes are included within the L superframes, includes multicast broadcast subframes; an L-bit superframe level bitmap for indicating which superframes within a segment contain multicast broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
when the superframe contains an indication of multicast broadcast subframes, indicating that no multicast broadcast subframes exist in the segment, the L-bit superframe level bitmap and the M-bit subframe pattern indicate that no multicast broadcast subframes exist;
wherein, L is a positive integer not greater than N, and the value of L is default or configurable; when the value of L is configurable, the each segment indication information further includes the value of L.
The resources in N superframes in the E-MBS MAP indication range are described in a segmented mode, and the length of each segment is L superframes;
the determined subframe position information comprises indication information of all segments in an E-MBS MAP indication range, wherein the indication information of each segment at least comprises the following information: an indication of multicast broadcast subframes contained by the superframe of a number of bits representing different ways of containing multicast broadcast subframes within the superframe;
when the indication information of the multicast broadcast subframe contained in the superframe with a plurality of bits indicates that no multicast broadcast subframe exists in the segment, the indication information of each segment only comprises the indication that the superframe with a plurality of bits contains the multicast broadcast subframe;
when the indication information of the multicast broadcast subframe contained in the superframe of the plurality of bits indicates that all superframes in the segment contain the multicast broadcast service subframe and the configuration of the subframe pattern in each superframe in the segment is the same, the indication information of each segment further includes: an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
when the indication information of the multicast broadcast subframe contained in the superframe of the plurality of bits indicates that only part of the superframe contains the multicast broadcast service subframe in the segment, and the configuration of the multicast broadcast service subframe pattern in the superframe containing the multicast broadcast service subframe is the same, the indication information of each segment further includes: an L-bit superframe level bitmap for indicating which superframes within a segment contain multicast broadcast subframes of a corresponding distribution pattern; and an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
when the superframe of the plurality of bits contains indication information of multicast broadcast subframes, which indicates that the superframe contains a plurality of different subframe pattern configurations of multicast broadcast service in the superframe, the indication information of each segment further includes: the number of sub-frame patterns in the segment is indicated; an L-bit superframe level bitmap corresponding to each subframe pattern for indicating which superframes within a segment contain multicast broadcast subframes of the corresponding distribution pattern; and an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
in the superframe containing the multicast broadcast subframes, all frames in one superframe contain the multicast broadcast subframes in the same subframe distribution pattern;
wherein, L is a positive integer not greater than N, and the value of L is default or configurable; when the value of L is configurable, the each segment indication information further includes the value of L.
The M bits of information in the M bits of subframe pattern indication are:
numbering preset subframe patterns;
or, the M is a bitmap, wherein the value of M is equal to the number of downlink subframes in the frame;
or, the subframe number indication is used for describing the forward or backward continuous subframes from the default position.
It can be seen from the above technical solutions provided by the present invention that a suitable E-MBS MAP organization method is selected as required, resources are flexibly allocated to multicast objects under different conditions, and an optimal compromise between resource allocation flexibility and overhead is achieved. In the next generation WiMAX system, the E-MBS MAP indication determined by the invention ensures that the terminal obtains the E-MBS resources and ensures the popularization of the multicast broadcast service.
Drawings
Fig. 1 is a schematic diagram illustrating a frame structure in a conventional standard 802.16 m;
FIG. 2 is a flow chart of a method for E-MBS MAP indication in accordance with the present invention;
FIG. 3 is a flowchart of a method for acquiring E-MBS MAP according to the present invention;
FIG. 4 is a diagram illustrating a first embodiment of indicating EMBS resource allocation using an E-MBS MAP indicator determined in accordance with the present invention;
FIG. 5 is a first diagram illustrating a first embodiment of indication of subframe locations according to a first embodiment of the present invention;
FIG. 6 is a diagram illustrating a second embodiment of indicating EMBS resource allocation using an E-MBS MAP indicator determined in accordance with the present invention;
fig. 7 is a second diagram illustrating an embodiment of indication of subframe positions according to the first embodiment of the present invention.
Detailed Description
FIG. 2 is a flowchart of a method for indicating E-MBS MAP according to the present invention, as shown in FIG. 2, including:
step 200: indicating location information of the E-MBS MAP.
The E-MBS MAP is used to indicate the multicast resource allocation over several consecutive frames. The corresponding relation between the E-MBS zone and the E-MBS MAP can be one-to-one or one-to-many.
When the corresponding relation between the E-MBS zone and the E-MBS MAP is one-to-one, the E-MBS MAP is used for indicating the resource positions of all multicast broadcast services in the E-MBS zone; when the corresponding relation between the E-MBS zone and the E-MBSMAP is one-to-many, the E-MBS MAP is used for indicating the resource position of part of multicast broadcast services in one E-MBS zone, and the multicast broadcast service sets of the E-MBS MAP have no intersection.
In this step, determining the location information of the E-MBS MAP includes: the location of the E-MBS MAP is indicated by the information element of the secondary superframe header or by default. And the information unit of the auxiliary super frame header is positioned in the super frame where the E-MBS MAP is positioned, or positioned in the super frame header before the E-MBS MAP.
When the auxiliary super frame header indicates the E-MBS zone in a mode of not distinguishing the E-MBS zone, the position of the E-MBS MAP is indicated by the information unit of the auxiliary super frame header; when the auxiliary super frame header indicates the E-MBS zone in a mode of distinguishing the E-MBS zone, the position of the E-MBS MAP is at the predetermined position of the E-MBS zone, and the position is the default position.
The location of the same E-MBS MAP may be indicated by information elements of one or more secondary superframe headers.
Step 201: and indicating the allocation information used for indicating the multicast broadcast service resources in the E-MBS MAP.
In this step, the allocation information in the E-MBS MAP for indicating the multicast broadcast service resources includes, but is not limited to: an indication of the resource location of each object in the E-MBS MAP, an indication of the location of the next E-MBS MAP. The object of the E-MBS MAP allocated resource may be one or more multicast broadcast services.
The indication of the resource allocation information of each object in the E-MBS MAP is used to describe the location information and the control information of the resource allocated to each object, where the allocation information includes control parameters such as a modulation and coding scheme of the resource, and location information parameters of the resource allocated to each object. The resource allocation and control information of each object can be independently coded, or the resource allocation and control information of a plurality of objects can adopt a joint coding mode. It may be location information for a set of resources for each object, and control information for a set of resources for each object or for a plurality of objects.
In this step, the granularity of allocating resources to each object by the E-MBS MAP may be a subframe or a Resource Block (RB).
When the granularity of allocating resources to each object by the E-MBS MAP is a subframe, the specific location information of the resources allocated to each object includes location information of all subframes of the resources allocated to the object. The position information of the subframe may include a superframe offset within the indication range of the E-MBS MAP, a frame number within the superframe, and a subframe number within the frame.
When the granularity of allocating resources to each object by the E-MBS MAP is RB, the specific position information of the resources allocated to each object comprises the position information of all subframes of the resources allocated to the object and the RB position information in each subframe. The RB position information in the subframe includes an RB start/stop position in the subframe, or the RB position information in the subframe includes an RB start position in the subframe and the number of RBs allocated in the subframe.
One way to indicate the location information of the next E-MBS MAP is in an indirect way, i.e., a superframe location where the secondary superframe header describing the location of the next E-MBS MAP is located. The superframe position information may be a superframe number or a superframe offset from the current superframe. And the terminal can obtain the location information of the next E-MBS MAP in the secondary superframe header information element of the corresponding superframe.
The indication of the location information of the next E-MBS MAP can also adopt a direct indication mode, namely, the specific location information of the next E-MBS MAP, including the location and the number of superframes, subframes and resource blocks, is indicated.
Furthermore, the resource location information in the E-MBS MAP for indicating the multicast broadcast service resources may further include an indication of the resource location allocated by the E-MBS MAP, which is used to describe the subframe location where all resources to be allocated by the E-MBS MAP are located, and describe to the subframe level, and the multicast user receiving the E-MBS MAP records the location information of the subframe, and obtains the location information of the E-MBS service through the indication of the resource location of each object, thereby obtaining the required E-MBS service. At this time, the method further includes: and logically connecting the resources described to the subframe level, and distributing resources for each object in the subframe set which is logically connected. The location information of the resource comprises:
when the granularity of allocating resources to each object by the E-MBS MAP is a subframe,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the offset of the ending subframe relative to the starting position of the logically connected multicast broadcast service subframe; or,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the number of the allocated subframes.
When the granularity of allocating resources for each object by the E-MBS MAP is a resource block RB,
the resource location information allocated to each object includes: resource starting point position information, resource ending point position information, wherein,
the resource starting position information and the resource ending position information are corresponding sub-frames and RB offsets; or,
the resource starting point position information and the resource ending point position information are as follows: and the corresponding starting point and ending point RB are offset relative to the starting RB of the whole E-MBS MAP to-be-allocated logically-connected subframe resource.
In the multicast broadcast service subframe described by the indication of the resource location allocated by the E-MBS MAP, there may be only the multicast broadcast service, or multiple services in which the multicast broadcast service and other services are multiplexed in a Frequency Division Multiplexing (FDM) manner.
The indication of the resource location allocated by the E-MBS MAP may flexibly select a suitable description method of the subframe location according to the distribution characteristics of the subframe, and the specific determination method includes, but is not limited to, the following methods:
the first method for determining the position of the subframe comprises the following information: an N-bit superframe bitmap, a 4-bit frame-level bitmap, and an M-bit subframe pattern indication. Wherein N is the superframe number of the indication range of the E-MBS MAP and is a positive integer; m is a positive integer. The N-bit superframe bitmap is used for indicating whether the superframe in the indication range of the E-MBS MAP contains the multicast broadcast subframe or not; a 4-bit frame level bitmap to indicate which frames in a superframe containing multicast broadcast subframes contain multicast broadcast subframes; an M-bit subframe pattern to indicate a distribution of multicast broadcast subframes in a frame containing the multicast broadcast subframes.
The second method for determining the position of the subframe comprises the following information: a start offset of the superframe allocation, a number of superframe allocations, a 4-bit frame level bitmap, and an M-bit subframe pattern indication. The starting offset of the superframe allocation and the number of the superframe allocations are used for indicating the position of a superframe containing multicast broadcast subframes, specifically, the starting offset of the superframe allocation is used for indicating the offset relative to the starting position of an E-MBS MAP indication range, and the superframe position is the number of superframes of continuous superframe allocation from the offset position; a 4-bit frame level bitmap to indicate which frames in a superframe containing multicast broadcast subframes contain multicast broadcast subframes; an M-bit subframe pattern to indicate a distribution of multicast broadcast subframes in a frame containing the multicast broadcast subframes.
A third method for determining the position of the subframe, which comprises the following information: a start offset of the superframe allocation, a period of the superframe allocation, a 4-bit frame level bitmap, and an M-bit subframe pattern indication. The starting position of superframe allocation and the period of superframe allocation are used for indicating the position of a superframe containing multicast broadcast subframes, specifically, the starting offset of superframe allocation is used for indicating the offset relative to the starting position of an E-MBS MAP indication range, and the superframe position is a superframe which is distributed at intervals of the period of superframe allocation from the offset position; a 4-bit frame level bitmap to indicate which frames in a superframe containing multicast broadcast subframes contain multicast broadcast subframes; an M-bit subframe pattern to indicate a distribution of multicast broadcast subframes in a frame containing the multicast broadcast subframes.
The method four for determining the subframe position comprises the following steps: corresponding to L superframes for describing the segment length of the E-MBS zone in the secondary superframe header, the indication information of each segment comprises: the 1-bit superframe contains an indication of a multicast broadcast subframe, an L-bit superframe level bitmap, and an M-bit subframe pattern indication. Wherein the indication information of each segment may be different.
In the fourth method, the 1-bit superframe contains the indication of the multicast broadcast subframe, which is used for indicating whether the multicast broadcast subframe is contained in the L superframes; only in case the indication that the 1-bit superframe contains multicast broadcast subframes indicates that the L superframes contain multicast broadcast subframes, there are two parameters indicated by the L-bit superframe level bitmap and the M-bit subframe pattern. When the L superframes are indicated to contain the multicast and broadcast subframes, the L-bit superframe-level bitmap is used for indicating which superframes in the segments contain the multicast and broadcast subframes, and in the superframes containing the multicast and broadcast subframes, each frame contains the multicast and broadcast subframes in the same subframe distribution pattern; an M-bit subframe pattern to indicate a distribution of multicast broadcast subframes in a frame containing the multicast broadcast subframes.
And a fifth method for determining the position of the subframe: corresponding to L superframes for describing the segment length of the E-MBS zone in the secondary superframe header, the indication information of each segment comprises: the superframe of several bits contains an indication of the multicast broadcast subframe, the number of subframe patterns contained within the segment, an L-bit superframe level bitmap corresponding to each subframe pattern, and an M-bit subframe pattern indication. Wherein, the indication information of the plurality of segments of the E-MBS MAP may be different.
In the method five, an L-bit superframe level bitmap is used for indicating which superframes in the segments contain multicast broadcast subframes of corresponding distribution patterns, and in the indicated superframes, each frame contains the multicast broadcast subframes in the same subframe distribution patterns; an M-bit subframe pattern to indicate a distribution of multicast broadcast subframes in frames of a multicast broadcast subframe in a corresponding frame.
The indication of the multicast broadcast subframe contained in the superframe with a plurality of bits is used for representing various situations of different modes of containing the multicast broadcast subframe in the superframe. But are not limited to the following:
when the indication information of the multicast broadcast subframe contained in the superframe with a plurality of bits indicates that no multicast broadcast subframe exists in the segment, the indication information of each segment only comprises the indication that the superframe with a plurality of bits contains the multicast broadcast subframe, and other parameters do not exist.
When the indication information of the multicast broadcast subframe contained in the superframe with a plurality of bits indicates that all superframes in the segment contain the multicast broadcast service subframe, and the subframe patterns are configured in each superframe in the segment in the same way, the indication information of each segment comprises the indication that the superframe with a plurality of bits contains the multicast broadcast subframe and the indication of the subframe patterns with M bits.
When the indication information of the multicast broadcast subframe contained in the superframe with a plurality of bits indicates that only part of the superframe contains the multicast broadcast service subframe in the segment and the configuration of the multicast broadcast service subframe pattern in the superframe containing the multicast broadcast service subframe is the same, the indication information of each segment comprises the indication that the superframe with a plurality of bits contains the multicast broadcast subframe, an L-bit superframe-level bitmap and an M-bit subframe pattern indication.
When the superframe with a plurality of bits contains indication information of multicast broadcast subframes, and indication sections contain various different subframe pattern configurations of the multicast broadcast service in the superframe, the indication information of each section comprises indication that the superframe with a plurality of bits contains multicast broadcast subframes, indication of the number of subframe patterns contained in the section, L-bit superframe-level bitmap corresponding to each subframe pattern and M-bit subframe pattern indication.
In the superframe containing multicast broadcast subframes, all frames within one superframe contain multicast broadcast subframes in the same subframe distribution pattern.
The M-bit information in the indication of the M-bit subframe pattern may be the numbers of several preset subframe patterns; or can be a bitmap, wherein the value of M is equal to the number of downlink subframes in a frame; it may also be a subframe number indication for describing a consecutive number of subframes forward or backward from a default position.
Through the multiple methods for determining the EMBS MAP indication provided by the invention, a proper E-MBS MAP organization mode is selected according to the needs, resources are flexibly allocated to the multicast objects under different conditions, and the optimal compromise between the resource allocation flexibility and the overhead is realized. FIG. 3 is a flowchart of a method for obtaining E-MBS MAP according to the present invention, as shown in FIG. 3, in a next generation WiMAX system, a terminal obtains a multicast broadcast service from a specified resource location (step 301) according to a received multicast broadcast service resource indication by a predetermined E-MBS MAP indication (step 300) of the present invention, so that the terminal obtains E-MBS resources, thereby ensuring the popularization of the multicast broadcast service.
The process of the present invention is described in detail below with reference to examples:
fig. 4 is a diagram illustrating a first embodiment of indicating EMBS resource allocation by applying the E-MBS MAP indication determined in the present invention, and as shown in fig. 4, one frame 202 includes 8 subframes, the first 5 subframes are downlink subframes (DL), and the last 3 subframes are uplink subframes (UL). In the downlink frame, some subframes such as the subframe 203 belong to the multicast broadcast service subframes within the indication range 2011 of the E-MBS MAP with the length of several superframes (assumed to be 8 superframes), the subframe 203 is indicated by the identifier 1, and the subframe 208 with the identifier of other numbers is not within the indication range 2011 of the E-MBS MAP with the length of several superframes. The specific location of the E-MBS MAP 204 within the multicast broadcast service sub-frame within its indicated range may be indicated by the super-frame header at the beginning of the currently indicated range. One subframe includes a number of RBs, and in the first embodiment, it is assumed that 4 RBs, for example, RB205, RB206, RB207, are included in one subframe.
In this embodiment, it is assumed that the E-MBS MAP indication includes 3 parts of content: indicating the positions of all multicast broadcast service subframes 203 to be allocated in the indication range of the E-MBS MAP; logically connecting all the indicated subframes 203, and then allocating resources such as RB205, RB206 and RB207 for each object in the logically connected subframe region and indicating; the superframe location 209 where the secondary superframe header describing the location of the next E-MBS MAP indication is located is indicated.
There may be various ways to determine the location of the multicast broadcast service subframe, and the description here only takes the method of segment indication (corresponding to the method four in step 2011 in fig. 2) as an example. Fig. 5 is a first schematic diagram of an embodiment of indication of subframe positions in the first embodiment of the present invention, and as shown in fig. 5, it is assumed that the indication range of the E-MBS MAP is 8 superframes, denoted as i to i +7, within which the distribution of the subframes of the multicast broadcast service is segment-ordered, and the segment length is 4 superframes. Wherein the small shaded boxes 401 and 402 indicate that the superframe contains the multicast broadcast service subframe to be indicated by the E-MBS MAP.
In this embodiment, it is assumed that the subframe distribution description information in the first segment is X: 1; y: 1100, 1100; z: 000. wherein, X is 1bit, which indicates whether the segment contains the multicast broadcast service subframe, 1 indicates containing, and 0 indicates not containing; y represents a bit map of segment length, each bit represents the distribution situation of the multicast broadcast service subframe in a superframe, 1 represents that the multicast broadcast service subframe is contained in the superframe, and 0 represents that the multicast broadcast service subframe is not contained; when a multicast broadcast service subframe is included in a super frame, the multicast broadcast service subframe is included in each of the frames 403 and 405 by default and is included in the same subframe pattern. Z represents a subframe distribution pattern in a frame, and the meaning of Z can be preset, and in this embodiment, it is assumed that 000 represents the last downlink subframe in a frame, and 001 represents the last two downlink subframes in a frame, and the like.
As shown in fig. 5, in this embodiment, the values of the subframe distribution description information in the first segment mean: x is 1 indicating that a multicast broadcast service subframe is included in the first segment; y is 1100 indicating that the multicast broadcast traffic sub-frame is distributed over each frame 403 in the first two superframes (superframe i and superframe i +1 as shown in fig. 5) of the first segment. A Z of 000 indicates that the last downlink subframe in the frame is the multicast broadcast service subframe 404.
Assuming that the subframe distribution description information in the second segment is X: 1; y: 0010; z: 001. the value of the subframe distribution description information on the second segment is as follows: x is 1 indicating that a multicast broadcast service subframe is contained within the second segment; y of 0010 indicates that the multicast broadcast service sub-frame is distributed over each frame 405 in the third superframe of the second segment (superframe i +6 as shown in fig. 4). Z is 001 indicating that the last two downlink subframes in the frame are multicast broadcast service subframes 406.
In this embodiment, the two pieces of indication information of the E-MBS MAP indicate the positions of 16 multicast broadcast service subframes in total. In the method for determining the E-MBS MAP indication of the present invention, the control information of the allocated resource and the location information of the resource in the E-MBS MAP indication may further allocate to each object (assuming that three objects, object 1, object 2 and object 3, are included in this embodiment) after logically connecting the 16 subframes of the multicast broadcast service. The concrete implementation is as follows:
the control information of the resource includes, but is not limited to, MCS scheme and the like. The correspondence between the control information and the location information of the resource may be one-to-one or one-to-many. It is assumed that a one-to-one manner is adopted in the present embodiment, that is, the resource description information of each object has both control information and location information.
First, the control information for the resource of each object includes:
control information of object 1: MCS: QPSK (3/4) STBC;
control information of object 2: MCS: 16QAM (1/2) SM;
control information of object 3: MCS: 16QAM (3/4) STBC.
Second, the location information of the resource includes:
in the first case, the granularity of E-MBS MAP allocated resources is a subframe.
In the present embodiment, it is assumed that all RBs in the multicast broadcast service subframe are used for the multicast broadcast service; when the granularity of the E-MBS MAP allocated resources is a subframe, the resource position information allocated by each object comprises: the offset of the starting subframe relative to the starting position of the logically-connected multicast broadcast service subframe, and the offset (or the number of allocated subframes) of the ending subframe relative to the starting position of the logically-connected multicast broadcast service subframe.
As shown in FIG. 4, the E-MBS MAP allocates resources for three objects with a granularity of subframes. An object may refer to either a single multicast broadcast service connection or a group of multicast broadcast service connections. The resource indication for each object in the first case is as follows:
the resources (e.g., 205 in FIG. 4) of object 1 include:
the starting subframe offset is 0; the offset of the termination subframe is 0 (or the number of allocated subframes is 1);
the resources (e.g., 206 in FIG. 4) of object 2 include:
the starting subframe offset is 1; the offset of the terminating subframe is 2 (or the number of allocated subframes is 2);
the resources (207 in fig. 4) of object 3 include:
the starting subframe offset is 3; the terminating subframe offset is 3 (or the number of allocated subframes is 1).
In the second case, the granularity of E-MBS MAP allocated resources is RB.
In this embodiment, it is assumed that all RBs in the multicast broadcast service subframe are used for the multicast broadcast service; when the granularity of the E-MBS MAP allocated resources is RB, the resource position information allocated by each object comprises the following contents in a group mode, and each combination can be independently indicated:
resource starting point position information and resource end point position information. The resource starting point position information and the resource ending point position information refer to corresponding sub-frames and RB offsets.
(II) resource starting point position information and the number of RBs allocated.
(III) resource starting position information, the number of allocated subframes, and a resource block offset of the ending RB with respect to the starting position of the ending subframe.
As shown in FIG. 4, the E-MBS MAP allocates resources for three objects (object 1, object 2, and object 3) with a granularity of RB in this embodiment. In this embodiment, an object may refer to either a single multicast connection or a group of multicast connections; all RBs in each multicast broadcast service subframe are for multicast broadcast services. In this way, in the present embodiment, when resources are indicated, only the start/end subframe position, the start RB position of the start subframe, and the end RB position of the end subframe are described, and a subframe located in the middle of the start/end subframe is assigned to the target by default to all RBs.
The resource indication for each object in the first case in fig. 4 is as follows:
according to the mode (one):
resource of object 1 (as 205 in fig. 4): the starting subframe offset is 0; the terminating subframe offset is 0; the starting RB position of the starting subframe is 0; the terminating RB position of the terminating subframe is 2;
resource of object 2 (206 in fig. 4): the starting subframe offset is 0; the terminating subframe offset is 3; the starting RB position of the starting subframe is 3; the terminating RB position of the terminating subframe is 0;
resource of object 3 (207 in fig. 4): the starting subframe offset is 3; the terminating subframe offset is 3; the starting RB position of the starting subframe is 1; the termination RB position of the termination subframe is 3.
According to the mode (II):
resource of object 1 (as 205 in fig. 4): the starting subframe offset is 0; the starting RB position of the starting subframe is 0; the number of distributed RBs is 3;
resource of object 2 (206 in fig. 4): the starting subframe offset is 0; the starting RB position of the starting subframe is 3; the number of the distributed RBs is 10;
resource of object 3 (207 in fig. 4): the starting subframe offset is 3; the starting RB position of the starting subframe is 1; the number of allocated RBs was 3.
According to the third mode:
resource of object 1 (as 205 in fig. 4): the starting subframe offset is 0; the number of the allocated subframes is 1; the starting RB position of the starting subframe is 0; the terminating RB position of the terminating subframe is 2;
resource of object 2 (206 in fig. 4): the starting subframe offset is 0; the number of the allocated subframes is 4; the starting RB position of the starting subframe is 3; the terminating RB position of the terminating subframe is 0;
resource of object 3 (207 in fig. 4): the starting subframe offset is 3; the number of the allocated subframes is 1; the starting RB position of the starting subframe is 1; the termination RB position of the termination subframe is 3.
Finally, the E-MBS MAP indication also needs to determine the position of the next E-MBS MAP indication describing the resources of the same object set (at least comprising one of object 1, object 2, object 3). In this embodiment, it is assumed that the superframe offset method is used for indicating, the superframe position 209 where the secondary superframe head of the next E-MBS MAP indication position is located is taken as 8 in the superframe of the E-MBS MAP, which means that the secondary superframe head will indicate the position of one E-MBS MAP in the superframe after offsetting 8 superframes, and the E-MBS MAP at least indicates the resource of one object among the object 1, the object 2, and the object 3.
Fig. 6 is a diagram illustrating a second embodiment of indicating EMBS resource allocation by applying the E-MBS MAP indication determined by the present invention, and as shown in fig. 6, one frame 302 includes 8 subframes, the first 5 subframes are downlink subframes, and the last 3 subframes are uplink subframes. In the downlink frame, some subframes such as the subframe 303 are multicast broadcast service subframes belonging to the indication range 3011 of the E-MBS MAP having a length of several superframes, the subframe 303 is indicated by the flag 1, and the subframe 304 identified by other numbers is not in the indication range of the E-MBS MAP. The E-MBS MAP 305 is located within the multicast broadcast service sub-frame within its indicated range, and its specific location may be indicated by the super-frame header at the beginning of the currently indicated range. One subframe contains several RBs, and it is assumed in this example that one subframe contains 4 RBs, e.g., RB307, RB308, RB 309.
In this embodiment, it is assumed that the E-MBS MAP indication at least includes: a description of the resources allocated to each object, and a superframe position 306 indicating where a secondary superframe header describing the next E-MBS MAP position is located. Wherein the description of the resources allocated to each object includes: control parameters such as modulation and coding schemes of the resources, and specific location information of the resources allocated to each object. The control parameter and the location information parameter of the resource may be in a one-to-one correspondence relationship or may be in a one-to-many correspondence relationship. Assume a one-to-one correspondence in this embodiment.
As shown in fig. 5, assuming that there are three objects, object 1, object 2, and object 3, the description of the resources allocated to each object is as follows:
first, control information of resources is described as follows:
control information of object 1: MCS: QPSK (3/4) STBC;
control information of object 2: MCS: 16QAM (1/2) SM;
control information of object 3: MCS: 16QAM (3/4) STBC.
Secondly, the description of the resource location information is divided into the following two cases according to the different granularity of each object resource:
in the first case, the granularity at which the E-MBS MAP allocates resources for each object is a subframe.
When the granularity of allocating resources to each object by the E-MBS MAP is a subframe, the specific position information of the resources allocated to each object comprises: location information of all subframes of the resource assigned to the object. As shown in fig. 4, the resource allocation for each object is as follows:
the resources of object 1 (e.g., 307 in FIG. 5) include:
the number of subframes is 2; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 0; subframe number of subframe 1 in the frame is 3; superframe offset of subframe 2 is 0; the frame number of the subframe 2 in the superframe is 0; subframe number of subframe 2 in the frame is 4;
the resources (e.g., 308 in FIG. 5) of object 2 include:
the number of subframes is 1; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 1; subframe number of subframe 1 in the frame is 3;
the resources (309 in fig. 5) of object 3 include:
the number of subframes is 1; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 1; subframe 1 has a subframe number of 4 within the frame.
In the second case, the granularity at which the E-MBS MAP allocates resources for each object is RB.
When the granularity of allocating resources to each object by the E-MBS MAP is RB, the specific position information of the resources allocated to each object comprises: position information of all subframes of the resource allocated to the object, RB position within each subframe. The position information of the subframe may include a superframe offset within the segment, a frame number within the superframe, and an intra subframe number. The RB position information within each subframe may include an RB start-stop position within the subframe.
The resources of object 1 (e.g., 307 in FIG. 5) include:
the number of subframes is 1; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 0; subframe number of subframe 1 in the frame is 3; the RB initial position in the subframe 1 is 0; the RB termination position in the subframe 1 is 2;
the resources (e.g., 308 in FIG. 5) of object 2 include:
the number of subframes is 4; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 0; subframe number of subframe 1 in the frame is 3; the RB initial position in the subframe 1 is 3; the RB termination position in the subframe 1 is 3; superframe offset of subframe 2 is 0; the frame number of the subframe 2 in the superframe is 0; subframe number of subframe 2 in the frame is 4; the RB initial position in the subframe 2 is 0; the RB termination position in the subframe 2 is 3; superframe offset of subframe 3 is 0; the frame number of the subframe 3 in the superframe is 1; subframe number of subframe 3 in the frame is 3; the RB initial position in the subframe 3 is 0; the RB termination position in the subframe 3 is 3; superframe offset of subframe 4 is 0; the frame number of the subframe 4 in the superframe is 1; subframe 4 has a subframe number of 4 within the frame; the RB initial position in the subframe 4 is 0; the RB termination position in the subframe 4 is 0;
the resources of object 3 (e.g., 309 in FIG. 5) include:
the number of subframes is 1; superframe offset of subframe 1 is 0; the frame number of the subframe 1 in the superframe is 1; subframe number of subframe 1 in the frame is 4; the RB initial position in the subframe 1 is 3; the RB termination position in subframe 1 is 3.
The E-MBS MAP indication also needs to determine the position of the next E-MBS MAP indication which describes the resources of the same object set (at least comprising one of the object 1, the object 2 and the object 3). In the present embodiment, a method indication of superframe offset is adopted. The superframe position 306 where the auxiliary superframe head of the next E-MBS MAP indication position is located is a value of 4 in the superframe of the E-MBS MAP, which means that the auxiliary superframe head can indicate the position of one E-MBS MAP in the superframe after offsetting 4 superframes, and the E-MBS MAP at least indicates the resource of one object of the object 1, the object 2 and the object 3.
In the first embodiment, it is assumed that the E-MBS MAP indication further includes location information of the multicast broadcast service subframe, and in this embodiment, the description is given by taking a periodic indication manner (corresponding to the third method in step 2011 in fig. 2) as an example. Fig. 7 is a second schematic diagram of an embodiment of indication of subframe locations in the first embodiment of the present invention, and as shown in fig. 7, it is assumed that the indication range of the E-MBS MAP is 8 superframes, denoted as i to i +7, in which superframes including subframes of multicast broadcast services are periodically distributed. Wherein the shaded small box 501 indicates that the superframe contains the multicast broadcast service subframe to be indicated by the E-MBS MAP.
In this embodiment, the period means that superframes including subframes of the multicast broadcast service are periodically distributed. The subframe distribution information in the E-MBS MAP indication includes a superframe level, a frame level, and a subframe level. As shown in fig. 7, the superframe level is further divided into a superframe allocation start and a superframe allocation period, respectively indicating from which superframe the period distribution starts and the size of the period. In fig. 7, it is assumed that the superframe allocation start and superframe allocation periods are 0 and 2, respectively, which indicate that the superframe i, superframe i +2, superframe i +4, and superframe i +6 include the multicast broadcast service subframe. A frame-level bitmap of 0110 indicates that the multicast broadcast service subframe is included in frame 1 and frame 2 (e.g., 502 in fig. 7) of the superframe including the multicast broadcast service subframe. The meaning of the subframe level pattern 000 is to carry multicast broadcast traffic in the last downlink subframe 503 in the frame 502.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims (12)

1. A method for obtaining multicast broadcast service is characterized in that a multicast broadcast service resource indication is predetermined; the terminal acquires the multicast broadcast service from the appointed resource position according to the received multicast broadcast service resource indication;
the determining the multicast broadcast service resource indication comprises: indicating location information of an enhanced multicast broadcast service map E-MBSMAP; indicating the distribution information used for indicating the multicast broadcast service resource in the E-MBS MAP; wherein, the allocation information in the E-MBS MAP for indicating the multicast broadcast service resource at least comprises: an indication of resource allocation information for respective objects in the E-MBSMAP describing location information and control information for resources allocated to each object, and,
an indication of a location of a next E-MBS MAP for describing a superframe location of a secondary superframe header of the next E-MBS MAP location;
wherein the location information of the resource includes:
when the granularity of allocating resources to each object by the E-MBS MAP is a subframe,
the specific location information of the resource allocated to each object includes location information of all subframes of the resource allocated to the object;
when the granularity of allocating resources for each object by the E-MBS MAP is a resource block RB,
the specific position information of the resource allocated to each object comprises the position information of all sub-frames of the resource allocated to the object and the position information of a resource block RB in each sub-frame; the RB position information in the subframe comprises RB start and stop positions in the subframe; or the RB position information in the subframe comprises an RB starting position in the subframe and the number of RBs distributed in the subframe;
the position information of the subframe comprises a superframe offset in an indication range of the E-MBS MAP, a frame number in the superframe and a subframe number in the frame.
2. The method of claim 1, wherein the method for indicating the location information of the E-MBS MAP is as follows: and indicating by using the information unit of the secondary super frame header or a default mode.
3. The method of claim 1, wherein the allocation information in the E-MBS MAP for indicating multicast broadcast service resources further comprises: and the indication of the resource position allocated by the E-MBS MAP is used for describing the positions of all resources to be allocated by the E-MBS MAP to a subframe level.
4. The method of claim 3, further comprising: logically connecting the resources described to the subframe level, and distributing resources for each object in the logically connected subframe set;
the location information of the resource comprises:
when the granularity of allocating resources to each object by the E-MBS MAP is a subframe,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the offset of the ending subframe relative to the starting position of the logically connected multicast broadcast service subframe; or,
the resource location information allocated to each object includes: the offset of the starting subframe relative to the starting position of the logically connected multicast broadcast service subframe and the number of the allocated subframes;
when the granularity of allocating resources for each object by the E-MBS MAP is a resource block RB,
the resource location information allocated to each object includes: resource starting point position information, resource ending point position information, wherein,
the resource starting position information and the resource ending position information are corresponding sub-frames and RB offsets; or,
the resource starting point position information and the resource ending point position information are as follows: and the corresponding starting point and ending point RB are offset relative to the starting RB of the whole E-MBS MAP to-be-allocated logically-connected subframe resource.
5. The method of claim 1 or 3, wherein the control information of the resource comprises a power control parameter and a Modulation and Coding Scheme (MCS) parameter.
6. The method according to claim 1 or 3, wherein the indication of the location of the next E-MBS MAP is described in a direct indication manner or an indirect indication manner;
when a direct indication mode is adopted, the indication of the position of the next E-MBS MAP is the specific position information of the next E-MBS MAP; the specific position information comprises the positions and the number of superframes, subframes and resource blocks;
when an indirect indication mode is adopted, the indication of the position of the next E-MBS MAP is the superframe position of the auxiliary superframe head of the position of the next E-MBS MAP; the superframe position information is superframe number or superframe offset relative to the current superframe.
7. The method of claim 3, wherein the determined subframe location information comprises:
an N-bit superframe bitmap for indicating whether superframes within the indication range of the E-MBS MAP contain multicast broadcast subframes; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
wherein N is the number of superframes of the indication range of the E-MBS MAP and is a positive integer; m is a positive integer.
8. The method of claim 3, wherein the determined subframe location information comprises:
a start offset of a superframe allocation for indicating an offset from a start position of an E-MBS MAP indication range; the number of superframe allocations; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
the superframe containing multicast broadcast subframes is a number of superframes of a continuous superframe allocation starting from a starting offset position of the superframe allocation.
9. The method of claim 3, wherein the determined subframe location information comprises:
a start offset of a superframe allocation for indicating an offset from a start position of the E-MBS MAP indication range; a period of superframe allocation; a 4-bit frame-level bitmap for indicating which frames in a superframe containing multicast-broadcast subframes contain multicast-broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
the superframe containing the multicast broadcast subframe is a superframe which is distributed at intervals of a superframe distribution period from a starting offset position of the superframe distribution.
10. The method of claim 3,
the resources in N superframes in the E-MBS MAP indication range are described in a segmented mode, and the length of each segment is L superframes;
the determined subframe location information comprises indication information of all segments in an E-MBS MAP indication range, wherein the indication information of each segment comprises:
an indication that a 1-bit superframe, which indicates whether multicast broadcast subframes are included within the L superframes, includes multicast broadcast subframes; an L-bit superframe level bitmap for indicating which superframes within a segment contain multicast broadcast subframes; and an M-bit subframe pattern indication for indicating a distribution of multicast broadcast subframes in a frame containing multicast broadcast subframes;
when the superframe contains an indication of multicast broadcast subframes, indicating that no multicast broadcast subframes exist in the segment, the L-bit superframe level bitmap and the M-bit subframe pattern indicate that no multicast broadcast subframes exist;
wherein, L is a positive integer not greater than N, and the value of L is default or configurable; when the value of L is configurable, the each segment indication information further includes the value of L.
11. The method of claim 3,
the resources in N superframes in the E-MBS MAP indication range are described in a segmented mode, and the length of each segment is L superframes;
the determined subframe position information comprises indication information of all segments in an E-MBS MAP indication range, wherein the indication information of each segment at least comprises the following information: an indication of multicast broadcast subframes contained by the superframe of a number of bits representing different ways of containing multicast broadcast subframes within the superframe;
when the indication information of the multicast broadcast subframe contained in the superframe with a plurality of bits indicates that no multicast broadcast subframe exists in the segment, the indication information of each segment only comprises the indication that the superframe with a plurality of bits contains the multicast broadcast subframe;
when the indication information of the multicast broadcast subframe contained in the superframe of the plurality of bits indicates that all superframes in the segment contain the multicast broadcast service subframe and the configuration of the subframe pattern in each superframe in the segment is the same, the indication information of each segment further includes: an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
when the indication information of the multicast broadcast subframe contained in the superframe of the plurality of bits indicates that only part of the superframe contains the multicast broadcast service subframe in the segment, and the configuration of the multicast broadcast service subframe pattern in the superframe containing the multicast broadcast service subframe is the same, the indication information of each segment further includes: an L-bit superframe level bitmap for indicating which superframes within a segment contain multicast broadcast subframes of a corresponding distribution pattern; and an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
when the superframe of the plurality of bits contains indication information of multicast broadcast subframes, which indicates that the superframe contains a plurality of different subframe pattern configurations of multicast broadcast service in the superframe, the indication information of each segment further includes: the number of sub-frame patterns in the segment is indicated; an L-bit superframe level bitmap corresponding to each subframe pattern for indicating which superframes within a segment contain multicast broadcast subframes of the corresponding distribution pattern; and an M-bit subframe pattern indication for indicating distribution of multicast broadcast subframes in a corresponding frame;
in the superframe containing the multicast broadcast subframes, all frames in one superframe contain the multicast broadcast subframes in the same subframe distribution pattern;
wherein, L is a positive integer not greater than N, and the value of L is default or configurable; when the value of L is configurable, the each segment indication information further includes the value of L.
12. The method according to any one of claims 7 to 11, wherein the M bits of information in the M bits of subframe pattern indication are:
numbering preset subframe patterns;
or, the M is a bitmap, wherein the value of M is equal to the number of downlink subframes in the frame;
or, the subframe number indication is used for describing the forward or backward continuous subframes from the default position.
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