CN101953133B - Apparatus and method for transmitting and receiving a frame including control information in a broadcasting system - Google Patents
Apparatus and method for transmitting and receiving a frame including control information in a broadcasting system Download PDFInfo
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- CN101953133B CN101953133B CN200980106092.9A CN200980106092A CN101953133B CN 101953133 B CN101953133 B CN 101953133B CN 200980106092 A CN200980106092 A CN 200980106092A CN 101953133 B CN101953133 B CN 101953133B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/323—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the physical layer [OSI layer 1]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Time-Division Multiplex Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Communication Control (AREA)
Abstract
Apparatus and method for transmitting and receiving a frame including control information in a broadcasting system. A frame for a broadcast service is generated using an in-band signaling scheme, and includes location information of control information in a next frame and indication information indicating a change/no-change in the control information in the next frame. The new frame structure minimizes power consumption of a receiver supporting the broadcast service.
Description
Technical field
The present invention relates generally to broadcast system, more specifically, relate to the apparatus and method that comprise the frame of control information for sending and receiving.
Background technology
Nowadays, along with the development of communication and broadcast technology, just attempting finding the new mode of broadcast service of providing in broadcast system or mobile communication system, and current carrying out about sending on broadcast service channel such as the common broadcast service of voice and image and such as the discussion of the high-level service of the newer service of grouped data.
In addition, broadcast service is by adopting the various communication technologys to meet user and consumer for digitlization, multichannel, broadband, the needs of high-quality etc. and making progress.Particularly, comprise the demand of universal increase recently gradually to the various technology for supporting broadcast service of the portable broadcasting equipment of high definition digital television and portable multimedia player (PMP).
The frame structure of Fig. 1 application broadcast service of the present invention.
With reference to figure 1, frame 101 comprise lead code 102, layer 1 (L1) signaling 103, layer 2 (L2) signaling 104 and at least one physical layer pipe (PLP) 105,106 ..., 107.Lead code 102 comprises for obtaining time between transmitter and receiver and Frequency Synchronization or for obtaining the synchronous information of frame boundaries.Comprise L1 static information 108, the configurable information 109 of L1 and L1 multidate information 110 as the L1 signaling 103 of physical layer signaling.As a reference, L1 signaling sends in P2 code element.
L1 static information 108 comprise in time through substantially static information.For example, L1 static information 108 can comprise the information about cell identifier, network identifier, radio frequency (RF) channel number, frame length, pilot subcarrier position etc.
Although it is not the information based on changing frame by frame, still can changing once in a while that the configurable information 109 of L1 comprises,, generally continues the information of multiple frames that is.For example, the configurable information 109 of L1 can comprise about service identifier, for the information of modulation order (modulation order), the encoding rate etc. of the transfer of data of independent service.Here, the unit that wherein the configurable information 109 of L1 static information 108 and L1 changes is defined as to superframe, it comprises at least one frame.
L1 multidate information 110 comprise can based on frame by frame change information.For example, L1 multidate information 110 can comprise the information relevant to the position that sends each PLP in present frame.More specifically, L1 multidate information 110 can comprise about the starting point of corresponding PLP and the information of end point, that is, and and the positional information of the multiple PLP that send on frame.The position of these PLP experiences change in next frame.
L2 signaling 104 represents media access control (MAC) signaling, and the PLP that sends therein L2 signaling is also referred to as PLP0.L2 signaling comprises the link information of each PLP and broadcast service interchannel., L2 signaling comprises instruction receives the information of specific broadcast service by which PLP.
PLP_1 105, PLP_2 106 and PLP_N 107 send one or more broadcast service channels.Send actual broadcast service data by PLP_1 105, PLP_2 106 and PLP_N 107.Therefore, PLP_1 105, PLP_2 106 and PLP_N 107 also can be called as data PLP.
Below, with reference to Fig. 1, the process that receives broadcast service channel is described.
With reference to figure 1, receiver is obtained and synchronizes with frame 101 by lead code 102, and obtains the information such as data transmission scheme or frame length from L1 signaling 103.Afterwards, based on L2 signaling 104, receiver determines which PLP sends it and expects the broadcast service channel receiving.Afterwards, receiver receives actual broadcast data by the data PLP corresponding with PLP_1 105, PLP_2 106 and PLP_N 107.As mentioned above, in order to receive broadcast service channel, receiver receives lead code 102, L1 signaling 103, L2 signaling 104 and data PLP 105 to 107 successively to each frame.
In communication system, propose in-band signalling and receive successively lead code 102, L1 signaling 103, L2 signaling 104 and data PLP 105 to 107 to prevent receiver every frame in the time that its reception broadcast service channel reaches the time of pre-fixed length.In-band signalling scheme is used special PLP to send the multidate information 110 of L1 signaling in next frame.
Fig. 2 illustrates the frame structure of supporting the broadcast service with traditional in-band signalling scheme.More specifically, Fig. 2 illustrates continuous in time frame.
With reference to figure 2, frame #k 201 has followed frame # (k+1) 202 below.More specifically, send continuously in time frame #k 201 and frame # (k+1) 202 receptions for broadcast service channel.Frame #k 201 and frame # (k+1) 202 comprise respectively lead code 203 and 209, L1 signaling 204 and 210, L2 signaling 205 and 211 and data PLP 206,207,212,213 and 214.
Suppose that receiver is receiving specific broadcast service channel, and in frame #k 201, receiver receives broadcast service channel by PLP_2 207, in the time of application in-band signalling scheme, PLP_2 207 comprises the multidate information of instruction as the position of PLP_2 in frame # (k+1) 202 of next frame.; the in-band signalling information 216 comprising according to the PLP_2 207 receiving in frame #k 201, receiver can obtain the information 217 of the PLP_2 213 of the frame # (k+1) 202 of the next frame for obtaining the broadcast service channel identical as reception.Thereby, the in-band signalling in the PLP_2 207 of dependence present frame, receiver can check or identify the position of the PLP_2 213 that sends broadcast data, and receives L1 signaling 210 without the P2 by next frame # (k+1) 202.
More specifically, according to in-band signalling scheme, completed in frame #k 201 till the receiver of the reception of PLP_2 207 can receive various information (as, lead code 209, L1 signaling 210 and L2 signaling 211) time close its equipment, until it receives the PLP_2 213 of next frame # (k+1) 202.Visible, in-band signalling scheme is intended to reduce the power consumption of receiver.
Summary of the invention
Technical problem
But, about the support to actual broadcast service, use the receiver of in-band signalling scheme may in fact fail directly or obtain in fact the power of expecting to reduce effect.Generally, this is because in traditional in-band signalling scheme, and the P2 of the next frame # (k+1) of transmitter by following present frame #k only sends the multidate information in L1 signaling 210.Due to these reasons, actual receiver must be carried out the operation that receives L1 signaling 210 by the P2 in frame # (k+1) 202, because receiver may normally not receive broadcast service, because it does not have the change/unaltered information about other information except multidate information in L1 signaling 210 (, the configurable information of L1 static information and L1).
Therefore, receiver is opened its receiving element to receive other information except multidate information in L1 signaling 210, that is, and and the configurable information of L1 static information and L1.As a result, traditional in-band signalling scheme fails to cause the power save of the receiver of envisioning.
In addition, because traditional in-band signalling scheme only sends the multidate information of the P2-L1 signaling 210 in next frame for the time period of specific PLP, it may finally cannot provide the change/unaltered information about the information of the L2 signaling 211 of the mapping relations of the each PLP of instruction and broadcast service interchannel.
More specifically, even if the information in the L2 signaling 211 sending by PLP0 changes, if receiver fails to detect this change, in the time that receiving broadcast data after a while, receiver may there is fatal error.Therefore,, even if traditional receiver utilizes in-band signalling scheme, it still has to receive successively lead code 209, L1 signaling 210, L2 signaling 211 and data PLP 212 to 214.
Therefore, current broadcast system need to solve the new in-band signalling scheme of the problem being caused by the application of traditional in-band signalling scheme.In addition, need broadcast service method of sending and receiving more accurately, it still utilizes in-band signalling scheme, but at least prevents some reception mistakes of broadcast data.
Technical scheme
The present invention is designed at least described problem of solution and/or shortcoming and at least following advantage is provided.Therefore, an aspect of embodiments of the invention is, a kind of apparatus and method that send expeditiously the control information of broadcast service in broadcast system by the in-band signalling scheme of application enhancements are provided.
Being on the other hand of embodiments of the invention, provides a kind of and is produced for the frame of broadcast service and sent the apparatus and method of this frame by the in-band signalling scheme of application enhancements in broadcast system.
Being on the other hand of embodiments of the invention, provides a kind of change/unaltered indication information that instruction is included in to the control information in next frame in broadcast system be included in present frame and send the apparatus and method of this frame.
Being on the other hand of embodiments of the invention, provides a kind of and is produced for the superframe of broadcast service and sent the apparatus and method of this superframe by the in-band signalling scheme of application enhancements in broadcast system.
Being on the other hand of embodiments of the invention, provides a kind of change/unaltered indication information that instruction is included in to the control information in next superframe in broadcast system to be included in current superframe and sends the apparatus and method of this superframe.
Being on the other hand of embodiments of the invention, provides a kind of apparatus and method of it having been applied to the control information of the broadcast service of improved in-band signalling scheme that receive expeditiously in broadcast system.
Being on the other hand of embodiments of the invention provides a kind of and in broadcast system, is received as frame that in-band signalling scheme produces and by checking that the in-band signalling signal in the frame receiving receives the apparatus and method of the control information of change.
Being on the other hand of embodiments of the invention, provide a kind of in broadcast system by relying on the change/do not change and carry out the optionally apparatus and method of receiving control information of control information of the in-band signalling signal check next frame in present frame.
Being on the other hand of embodiments of the invention, provides a kind of in-band signalling signal receiving in broadcast system in the superframe producing based on in-band signalling scheme and the superframe receiving by inspection optionally to receive the apparatus and method of the control information changing in next superframe.
Being on the other hand of embodiments of the invention, provides a kind of receiving system and method for optionally controlling the control information in next superframe in broadcast system by the change/unaltered indication information that relies on current superframe inspection instruction to be included in the control information in next superframe.
Being on the other hand of embodiments of the invention, provide a kind of in broadcast system by receiving system and the method for saving the power of receiver about the control information of broadcast service with improved in-band signalling scheme sending and receiving.
According to an aspect of embodiments of the invention, provide a kind of method that sends the frame that comprises control information in system supporting broadcast service.The method comprises: produce the frame that comprises the change/unaltered indication information of the control information of broadcast service at least one physical layer pipe (PLP) and instruction next frame, this indication information is included in one of described at least one PLP; And send the frame that produces.
According to embodiments of the invention on the other hand, provide the device that sends the frame that comprises control information in a kind of system supporting broadcast service.This device comprises: frame generator, produces the frame that comprises at least one physical layer pipe (PLP); Transmitting element, for sending produced frame; And controller, comprise the frame of the change/unaltered indication information that is used to indicate the control information of broadcast service in next frame to be created in one of described at least one PLP for control frame generator.
According to embodiments of the invention on the other hand, provide a kind of method that receives the frame that comprises control information in system supporting broadcast service.The method comprises: receive the frame that comprises at least one physical layer pipe (PLP) and be used to indicate the change/unaltered indication information of the control information of broadcast service in next frame, this indication information is included in one of described at least one PLP; Extract this indication information; And determine it is to receive control information in next frame or directly receiving data information and receiving control information not based on extracted indication information.
According to embodiments of the invention on the other hand, provide the device that receives the frame that comprises control information in a kind of system supporting broadcast service.This device comprises: receiving element, reception comprises at least one physical layer pipe (PLP) and is used to indicate the frame of the change/unaltered indication information of the control information of broadcast service in next frame, and this indication information is included in one of described at least one PLP; In-band signalling dector, for extracting this indication information; And controller, determine it is to receive the control information of next frame or directly receiving data information and receiving control information not for the indication information based on extracted, and selectively open or close receiving element.
Beneficial effect
In the past state obviously so known, according to embodiments of the invention, the PLP of transmitter by present frame sends the change/unaltered indication information of the control information that is used to indicate next frame, make thus reception that receiver can optionally control control information with and for the power consumption of data receiver.Here, this frame comprises the frame for broadcast service, and comprises the superframe that comprises at least one frame.
Therefore, receiver relies on this indication information in current superframe, to detect the change/not change of the control information of next superframe, and optionally opens or close its receiving element with receiving control information, makes it possible to accurately receive broadcast service.
In addition, receiver can detect in advance with indication information the change of the control information of next superframe, makes thus to reduce the power consumption of its receiving element and receives broadcast service with fatal error still less.
Brief description of the drawings
By the detailed description below in conjunction with accompanying drawing, above and other aspect, feature and the advantage of embodiments of the invention will be more obvious, wherein:
The frame structure of Fig. 1 application broadcast service of the present invention;
Fig. 2 illustrates the frame structure of supporting the broadcast service with traditional in-band signalling scheme;
The operation of the transmitter of broadcast service is supported in Fig. 3 explanation according to an embodiment of the invention;
The operation of the receiver of broadcast service is supported in Fig. 4 explanation according to an embodiment of the invention;
Fig. 5 illustrates the structure of transmitter according to an embodiment of the invention; And
Fig. 6 illustrates the structure of receiver according to an embodiment of the invention.
In accompanying drawing, identical accompanying drawing reference numerals refers to identical element, feature and structure by being interpreted as.
Embodiment
Be discussed in more detail below different embodiments of the invention referring now to accompanying drawing.In the following description, for clear and succinct therefore, omit the known function that is incorporated to and the detailed description of configuration here.
Embodiments of the invention define the superframe that comprises at least one frame in broadcast system, and the term superframe that uses in the whole text of the specification unit of indicating L1 static information therein or the configurable information of L1 to change.For convenient, in the following description, as example, suppose that superframe only comprises a frame.But embodiments of the invention are also applicable to comprise the superframe of multiple frames.
Embodiments of the invention provide in broadcast system for generation of with the scheme that sends broadcast service frame, wherein transmitter this frame comprise be used to indicate next frame in the change/unaltered indication information of control information, to correctly receive broadcast service at receiver place.Therefore, receiver can rely on the change of control information in next frame/do not change to determine to be open or cut out specific (multiple) in its receiving element by present frame.,, according to embodiments of the invention, receiver carrys out receiving broadcast service data more accurately by checking that the change/of control information changes.
The operation of the transmitter of broadcast service is supported in Fig. 3 explanation according to an embodiment of the invention.
With reference to figure 3, before producing present frame, transmitter is determined the L1 signaling that will send by the P2 in next frame and the L2 signaling information that will send by PLP0 in step 301.Here can comprise that L1 static information, the configurable information of L1 and L1 multidate information are as L1 signaling.Transmitter is determined the positional information that sends the PLP (, PLP0) of L2 signaling by it, as L2 signaling information.Equally, receiver is determined the positional information about the data PLP of broadcast service.
In step 302, whether transmitter determines the configurable information of L1 static information, L1 or the configurable information of L1 static information, L1 from present frame or the change of PLP0 information of PLP0 information that will send at next frame.In the time that L1 static information, the configurable information of L1 or PLP0 information have changed, in step 303, transmitter arranges the indication information of the change of L1 static information, the configurable information of L1 or PLP0 information in instruction next frame, and set indication information is included in the in-band signalling on the particular data PLP in the middle of the data PLP that will send in present frame.
Embodiments of the invention are also applicable to the situation of the change of L1 static information, the configurable information of L1, L1 multidate information or PLP0 information in wherein said indication information instruction next frame.But embodiments of the invention described herein define the indication information that will arrange not containing L1 multidate information, because L1 multidate information is a kind of information variable in each frame.This definition can alternatively be selected by system operator.
Refer back to step 302, in the time that in next frame, L1 static information, the configurable information of L1 or PLP0 information do not change, transmitter arranges in step 304 indication information that in instruction next frame, L1 static information, the configurable information of L1 or PLP0 information do not change, and the indication information not changing arranging is included in the in-band signalling on each data PLP that will send in present frame.
Arrange in the first method of indication information in step 303 and 304, predetermined bit can be distributed to each change with L1 static information, the configurable information of L1 or PLP0 information in instruction next frame in the configurable information of L1 static information, L1 or the PLP0 information in present frame.For example, for each in L1 static information, the configurable information of L1 or PLP0 information is distributed a bit, to make the bit of the distribution with value ' 1 ' indicate the change of corresponding information, and the bit with value ' 0 ' indicates corresponding information not change, otherwise or.Equally, this specific definition can be selected by system operator.
As the second method that indication information is set, distribute a bit for L1 static information, the configurable information of L1 or PLP0 information are all, indicate any change in the information of the three types being distributed to make the bit of the distribution with value ' 1 ', and the bit with value ' 0 ' indicates and anyly in the information of the three types distributing all do not change, otherwise or.
As the third method that indication information is set, can be the multiple bits of all distribution of L1 static information, the configurable information of L1 or PLP0 information, change with this information of indicating present frame which frame afterwards.
For example, in the time distributing 8 bit, ' 00000000 ' can indicate and in next frame, not have information change, and the configurable information of L1 static information, L1 in the 10th frame after ' 00001010 ' (metric 10) instruction present frame or any one change in PLP0 information.Therefore, can expand for the bit of L1 static information, the configurable information of L1 or PLP0 information and distribute.
Transmitter arrange in present frame according to the present invention instruction next frame in control information change/unaltered indication information with make receiver can check with in-band signalling (, L1 static information, L1 are configurable can information or PLP0 information) the change/do not change of each bit corresponding to indication information, thereby receiver can suitably open or cut out.As a result, receiver can optionally reduce power consumption.
In step 305, transmitter produces or configures present frame so that must can comprise lead code, L1 signaling, L2 signaling and comprise at least one data PLP of the change/unaltered indication information of L1 static information, the configurable information of L1 or PLP0 information in instruction next frame by present frame.Sender to receiver sends the present frame producing.
In step 306, the identical process that transmitter is carried out above-mentioned steps 301 to 305 by the next frame to after present frame produces next frame.
Here in other embodiments of the invention, also can apply the change of indication information with L1 static information, the configurable information of L1, L1 multidate information or PLP0 information in instruction next frame.
The operation of the receiver of broadcast service is supported in Fig. 4 explanation according to an embodiment of the invention.
With reference to figure 4, in step 401, the in-band signalling in the data PLP of receiver from the present frame #k importing into obtains the change/unaltered indication information that is used to indicate L1 static information in next frame, the configurable information of L1 or PLP0 information.In addition, receiver obtains positional information or the L1 multidate information of PLP identical in next frame.That is, in step 401, the change/unaltered indication information of the positional information that is used to indicate identical PLP (L1 multidate information), L1 static information, the configurable information of L1 or PLP0 information that receiver storage obtains.Afterwards, receiver receives broadcast service channel by (multiple) data PLP of the present frame that imports into.
After completing the reception of the broadcast service channel importing in present frame, receiver prepares to receive next frame # (k+1) in step 402.
In step 403, the indication information of receiver based on obtaining determines whether L1 static information, the configurable information of L1 or PLP0 information change at the starting point place of next frame.In the time that indication information instruction L1 static information, the configurable information of L1 or PLP0 information do not change, in step 404, receiver also can directly receive broadcast data and be received L1 signaling or received L2 signaling by PLP0 by P2 in noting be used in next frame # (k+1) in the position of corresponding data PLP.Therefore, receiver cuts out its receiving element at the acceptance point place of L1 signaling or L2 signaling, because it has detected that the L1 signaling sending by P2 or the L2 signaling sending by PLP0 do not change.Afterwards, its receiving element is opened at the acceptance point place of the data PLP that receiver sends after the transmission of L1 signaling or L2 signaling, and receives the broadcast service channel sending by data PLP.
On the contrary, if changed in step S403 indication information instruction L1 static information, the configurable information of L1 or PLP0 information,, in step 405, the indication information of the change of receiver based on instruction L1 static information, the configurable information of L1 or PLP0 information is identified the change of the L1 signaling sending by P2 or the L2 signaling sending by PLP0.Therefore, receiver will receive L1 signaling by P2 in next frame # (k+1), and the L1 static information acquiring change or the configurable information of L1.In addition, receiver receives L2 signaling by PLP0 in next frame # (k+1), and the L2 signaling information acquiring change, because the information being included in L1 signaling or L2 signaling is the important control information that is directly involved in the reception of broadcast service data.
Therefore, after the configurable information of L1 static information, L1 or PLP0 information of the change sending at the acceptance point place that is received in L1 signaling or L2 signaling, the configurable information of L1 static information, L1 or PLP0 information that receiver changes by application receive broadcast service channel.
According to the third method that indication information is set of describing, provide as embodiments of the invention, in the time that the change of receiver identification L1 static information, the configurable information of L1 or PLP0 information will be made after the one or more frames of process, receiver will be received L1 signaling or be received P2 signaling by PLP0 by P2 in the frame of bit instruction that is used to indicate information by distribution.
For example, in the time that the indication information obtaining in step 401 has the value ' 00001010 ' (metric 10) of 8 bits, receiver identification L1 static information, the configurable information of L1 or PLP0 information change the 10th frame after present frame.Therefore, in the time that present frame is assumed that the 10th frame, receiver will be received L1 signaling or be received P2 signaling by PLP0 by P2 in the 10th frame, and until the 9th frame all need not receive L1 signaling or receive P2 signaling by any PLP0 by P2.
That is, according to embodiments of the invention, receiver can be after present frame directly receives the corresponding data PLP in the 10th frame, and until the 9th frame all need not receive L1 signaling or by any PLP0 reception P2 signaling by P2.Here, receiver can receive or not receive L1 and L2 signaling based on its available horsepower.
After completing steps 404 or 405, receiver returns to step 401 and to next frame repeating step 402 to 405.
As implied above, although only comprise a frame as example superframe described herein, embodiments of the invention are also applicable to comprise the superframe of multiple frames.
In this situation, can by the step 303 of Fig. 3 and 304 and the step 401 of Fig. 4 in the indication information that provides be defined as the change of L1 static information, the configurable information of L1 or PLP0 information in next superframe of instruction/do not change.In other cases, in other example embodiment of the present invention, indication information can be defined as to the change/not change of L1 static information, the configurable information of L1, L1 multidate information or PLP0 information in next superframe of instruction.Therefore,, in step 403, receiver can be determined the change of control information/do not change based on superframe one by one.
Fig. 5 illustrates the structure of transmitter according to an embodiment of the invention.
With reference to figure 5, transmitter comprises scheduler 501, controller 502, in-band signalling signal generator 503, frame generator 504, sends data buffer 505 and frame transmitter 506.Sending data buffer 505 can be for example for the memory of the broadcast service data providing from upper strata is provided.Be stored in the broadcast service data sending in data buffer 505 and send to receiver by several broadcast service channels.
After inspection is stored in the broadcast service data that sends data buffer 505, scheduler 501 operation dispatchings.This scheduling can comprise the broadcast service data that consideration transmitter will send and determine the control information in particular frame, i.e. L1 static information, the configurable information of L1 or L1 multidate information, PLP0 information, and at least one data PLP.
For example, when support broadcast service on wireless communication system time, the L1 static information information of frame length and RF channel number (, such as) can experience change.In addition, comprise that the modulation order of each service and the configurable information of the L1 of data transfer rate are changeable according to specific broadcast service.Equally, the positional information of broadcast service channel and specific PLP is variable.Therefore, scheduler 501 considers that its broadcast service that will send arranges L1 static information, the configurable information of L1, L1 multidate information, PLP0 information and data PLP.Scheduling result is provided for controller 502.
Controller 502 is controlled in-band signalling signal generator 503 and is produced in-band signalling signal.Here, in-band signalling signal generator 503 is distributed to predetermined bit each in L1 static information, the configurable information of L1, L1 multidate information and PLP0 information to be provided for indicating the change/unaltered indication information of this information under controller 502 is controlled.
Alternatively, in-band signalling signal generator 503 can distribute whole for L1 static information, the configurable information of L1, L1 multidate information and PLP0 information of a bit, to use this bit that the change/unaltered indication information of this information of instruction is set.
As another replacement, in-band signalling signal generator 503 can distribute whole for L1 static information, the configurable information of L1, L1 multidate information and PLP0 information of multiple bits, will comprise with which frame arranging after instruction present frame the indication information that information changes.
In addition, the frame that controller 502 control frame generators 504 produce for broadcast service.Here, frame generator 504 produces the L1 signaling that comprises lead code, sends by P2, the L2 signaling (PLP0) sending by PLP0 and the frame of at least one data PLP under the control of controller 502.
Particularly, according to embodiments of the invention, frame generator 504 receives the indication information being arranged by in-band signalling signal generator 503,, be used to indicate the change/unaltered indication information of L1 static information in next frame, the configurable information of L1, L1 multidate information or PLP0 information, and this indication information be included in the specific PLP of present frame., frame generator 504 produces the indication information being arranged by in-band signalling signal generator 503 is included in to the frame in the particular data PLP of present frame.
Afterwards, frame transmitter 506 sends the frame being produced by frame generator 504 to receiver.
According to embodiments of the invention, transmitter can use OFDM (OFDM) to send the frame producing.Equally, according to wireless communication system, transmitter can send the frame producing by code division multiple access (CDMA) or time division multiple access (TDMA).Transmitter also can use multiple-input and multiple-output (MIMO) communication plan to send the frame producing via multiple antennas.
For example, in the time using OFDM, frame transmitter 506 can have the structure identical with ofdm signal transmitter.In this situation, frame transmitter 506 can by for by the information of the broadcast service data PLP of broadcast service (, about) and wherein distribute the signaling PLP of control information to be mapped to the mapper of a specific subcarrier or multiple subcarriers, for time-domain signal being transformed to the inverse fast fourier transform device (IFFT) of frequency-region signal and sending this frame for the inserter that Cyclic Prefix (CP) is inserted into frequency-region signal.
Although the transmitter of Fig. 5 is illustrated and is described as comprising the independent assembly for each function above,, for the scheduler 501 dispatched, for controlling the controller 502 of other assemblies, for carrying out the in-band signalling signal generator 503 of in-band signalling, for generation of the frame generator 504 of frame, for the transmission data buffer 505 that cushions with for sending the frame transmitter 506 of frame, but these assemblies that separate are to provide the restriction being not to be read as so that explain embodiments of the invention.That is, imagination embodiments of the invention also can be realized by such transmitter, and at least some of the function of wherein being carried out by the assembly separating are above carried out by single component, as the task of single component execution scheduler 501 and controller 502.
Fig. 6 illustrates the structure of receiver according to an embodiment of the invention.
With reference to figure 6, receiver comprises data PLP receiving element 601, signaling PLP receiving element 603, in-band signalling dector 602 and controller 604.Data PLP receiving element 601 is corresponding to the wireless signal processor in common wireless communication system.,, in ofdm system, data PLP receiving element 601 uses traditional ofdm signal receiving element to receive the frame sending from transmitter.
In order to receive broadcast service, in the time that receiver receives initial frame, it receives lead code by the lead code receiving element (not shown) by signaling PLP receiving element 603 and comes to obtain and synchronize with this frame.In addition, receiver uses L1 signaling receiving element (not shown) to receive the L1 signaling information sending by P2 code element.More specifically, receiver obtains information about broadcast service network, frame length, quantity for the wireless channel of broadcast service, service identifier information, encoding rate etc. as L1 signaling information, and checks the essential information for supporting its broadcast service that will receive.In addition, the information of each PLP that receiver use L2 signaling receiving element (not shown) acquisition instruction sends by PLP0 code element and the annexation of broadcast service interchannel, and check the information that will receive for broadcast service the position of data PLP about it.Afterwards, the broadcast service channel that receiver usage data PLP receiving element 601 receives in the data PLP sending.
But, according to embodiments of the invention, in the time receiving non-initial frame, utilizing the indication information being extracted by in-band signalling dector 602, receiver can only receive the broadcast service channel in data PLP via data PLP receiving element 601.
More specifically, data PLP receiving element 601 can comprise the equipment of carrying out in conjunction with the inverse operation of the transmitter described in Fig. 5.In this situation, receiver may further include: for the de-mapping device from the specific subcarrier demapping code element corresponding with the information of broadcast service, for frequency-region signal being transformed to the fast Fourier transformer (FFT) of time-domain signal and removing device for the protection interval that removes CP.In the system of use CDMA or TDMA radio communication system, receiver can utilize the structure corresponding with communication plan to receive data PLP.But, because each structure of receiving element is not feature of the present invention, so will save its detailed description here.
In-band signalling dector 602 extracts the change/unaltered indication information that is used to indicate L1 static information in next frame, the configurable information of L1, L1 multidate information or PLP0 information, and this indication information is included in the specific PLP providing from data PLP receiving element 601.; in-band signalling dector 602 extracts instruction as the configurable information of L1 static information, L1 of the L1 signaling information sending by P2 in next frame and the change/unaltered indication information of L1 multidate information from the specific PLP obtaining by data PLP receiving element 601, or extraction conduct is used to indicate the in-band signalling signal of the change/unaltered indication information of the L2 signaling information sending by PLP0.Equally, receiver extracts the change/unaltered indication information of instruction as the L1 multidate information of the positional information of PLP identical in next frame.
The in-band signalling signal being extracted by in-band signalling dector 602 is offered to controller 604.Controller 604 uses the in-band signalling signal at stop signaling PLP receiving element 603 extracting, only to receive data PLP.Alternatively, controller 604 turn-on data PLP receiving elements 601 and signaling PLP receiving element 603 are to receive L1/L2 signaling information and data PLP.
More specifically, in the time that L1 static information, the configurable information of L1, L1 multidate information from the indication information instruction next frame of in-band signalling signal extraction and/or the L2 signaling information that sends by PLP0 change, controller 604 is opened signaling PLP receiving element 603 at the acceptance point place of L1 signaling or L2 signaling, to receive the signaling information of change.The turn-on data PLP of the acceptance point place receiving element 601 of the data PLP that controller 604 sends after the transmission of L1 signaling or L2 signaling, to receive the broadcast data sending by broadcast service channel.That is, controller 604 turn-on data PLP receiving elements 601 and signaling PLP receiving element 603 both to receive necessarily L1 signaling or the L2 signaling of change, make to receive faultless broadcast data.
But, in the time that indication information instruction L1 static information, the configurable information of L1, L1 multidate information and PLP information from in-band signalling signal extraction do not change, controller 604 cuts out signaling PLP receiving element 603 at the acceptance point place of L1 signaling or L2 signaling, and the turn-on data PLP of the acceptance point place receiving element 601 of the data PLP sending after the transmission of L1 signaling or L2 signaling, to receive broadcast data by broadcast service channel.That is, when from in-band signalling input to without change information or change the disappearance of control information time, controller 604 is turn-on data PLP receiving element 601 only, to use existing control information to receive this broadcast data.
As mentioned above, according to the present invention, controller 604 checks the change/unaltered indication information (this indication information is to send by the current data PLP just receiving from in-band signalling dector 602) of control information in instruction next frame, and relies on this indication information selectively to open or close data PLP receiving element 601 or signaling PLP receiving element 603.In other words, controller 604 minimizes the power consumption of receiver by controlling expeditiously receiving element 601 and 603.In addition,, because controller 604 detected the change of control information/do not change before the transmission of next frame, therefore can determining, receiver inerrably receives broadcast service channel.
Although as the transmitter of Fig. 5, the receiver of Fig. 6 is illustrated and is described as comprising the assembly separating for each function above, be data PLP receiving element 601, signaling PLP receiving element 603, in-band signalling dector 602 and controller 604, but these assemblies that separate are to provide the restriction being not to be read as so that explain embodiments of the invention.; imagination embodiments of the invention also can be realized by such receiver; at least some of the function of wherein being carried out by the assembly separating are above carried out by single component, as the task of single component executing data PLP receiving element 601 and in-band signalling dector 602.
Although illustrate and describe the present invention with reference to some embodiment, it will be apparent to those skilled in the art that and can carry out various changes in form and details here and not deviate from the spirit and scope of the present invention that limited by claims and equivalent thereof.
Claims (40)
1. a method that sends the frame that comprises control information in the system of supporting broadcast service, this system comprises frame generator and frame transmitter, the method comprises:
Produce the frame that comprises at least one physical layer pipe (PLP) and be used to indicate the change/unaltered indication information of the control information of broadcast service in next frame by frame generator, this indication information is included in one of described at least one PLP; And
Send the frame producing by frame transmitter,
Wherein this indication information is included in and will sends in the data PLP of broadcast data of broadcast service by it, and
Wherein the control information of which frame after this indication information instruction present frame changes.
2. method according to claim 1, wherein taking according to the superframe of broadcast service as this control information of Unit alteration, this superframe comprises at least one frame.
3. method according to claim 2, wherein this control information is included in the configurable information that can change in each superframe.
4. method according to claim 3, also comprises that the multiple bits that are utilized as its distribution arrange this indication information,
Wherein the plurality of bit is indicated the superframe that will change.
5. method according to claim 1, also comprises that a bit that is utilized as its distribution arranges this indication information.
6. method according to claim 1, also comprises according to broadcast service based on changing frame by frame this control information.
7. method according to claim 6, wherein this control information comprises multidate information.
8. method according to claim 7, wherein this multidate information comprises the positional information of described at least one PLP.
9. method according to claim 1, wherein this control information comprises the map information between the service channel of described at least one PLP and the broadcast data by its transmission broadcast service.
10. supporting in the system of broadcast service that, for sending a device for the frame that comprises control information, this device comprises:
Frame generator, produces the frame that comprises at least one physical layer pipe (PLP); With
Transmitting element, for sending produced frame,
One of wherein said at least one PLP comprises the change/unaltered indication information that is used to indicate the control information of broadcast service in next frame,
Described one in wherein said at least one PLP comprises the data PLP that will send by it broadcast data of broadcast service, and
Wherein the control information of which frame after this indication information instruction present frame changes.
11. devices according to claim 10, wherein this frame comprises the superframe that comprises at least one frame.
12. devices according to claim 11, also comprise scheduler, for operation dispatching to change configurable information based on superframe one by one.
13. devices according to claim 12, also comprise:
In-band signalling signal generator, for distributing multiple bits to indication information,
Wherein the plurality of bit is indicated the superframe that will change.
14. devices according to claim 10, also comprise:
In-band signalling signal generator, for distributing a bit to indication information.
15. devices according to claim 10, also comprise:
Scheduler, for scheduling result is provided, with according to broadcast service based on changing frame by frame this control information.
16. devices according to claim 15, wherein this control information comprises multidate information.
17. devices according to claim 16, wherein this control information also comprises the multidate information of the positional information that comprises described at least one PLP.
18. devices according to claim 10, also comprise:
Scheduler, for providing scheduling result to change control information, wherein this control information comprises the map information between the service channel of described at least one PLP and the broadcast data by its transmission broadcast service.
19. 1 kinds supporting in the system of broadcast service that, for receiving the method for the frame that comprises control information, this system comprises receiver and dector, and the method comprises:
Receive the frame that comprises at least one physical layer pipe (PLP) and be used to indicate the change/unaltered indication information of the control information of broadcast service in next frame by receiver, this indication information is included in one of described at least one PLP;
Extract this indication information by dector; And
Indication information based on extracting determines it is the control information of reception in next frame or receiving data information and do not receive the control information in next frame,
Wherein this indication information is included in and will sends in the data PLP of broadcast data of broadcast service by it, and
Wherein the control information of which frame after this indication information instruction present frame changes.
20. methods according to claim 19, wherein this frame comprises the superframe that comprises at least one frame according to broadcast service.
21. methods according to claim 20, wherein this control information comprises configurable information, it is based on superframe change one by one.
22. methods according to claim 21, also comprise that the multiple bits that are utilized as its distribution arrange this indication information,
Wherein the plurality of bit is indicated the superframe that will change.
23. methods according to claim 19, also comprise that a bit that is utilized as its distribution arranges this indication information.
24. methods according to claim 19, also comprise according to broadcast service based on changing frame by frame this control information.
25. methods according to claim 24, wherein this control information comprises multidate information.
26. methods according to claim 25, wherein this multidate information comprises the positional information of described at least one PLP.
27. methods according to claim 19, wherein this control information comprises the map information between the service channel of described at least one PLP and the broadcast data by its transmission broadcast service.
28. methods according to claim 19, also comprise:
In the time that control information does not change in the indication information instruction next frame extracting, be closed in the receiving element of its place's receiving control information; And
Be open at the receiving element of its place's receiving data information.
29. methods according to claim 19, also comprise:
In the time that control information changes in the indication information instruction next frame extracting, be open at the receiving element of its place's receiving control information;
Receive the control information changing; And
Be open at the receiving element that its place receives the data message corresponding with the control information changing.
30. 1 kinds supporting in the system of broadcast service that, for receiving the device of the frame that comprises control information, this device comprises:
Receiving element, receives the frame that comprises at least one physical layer pipe (PLP) and be used to indicate the change/unaltered indication information of the control information of broadcast service in next frame, and this indication information is included in one of described at least one PLP;
In-band signalling dector, for extracting this indication information; And
Controller, determines it is the reception control information of next frame or receiving data information and receiving control information not for the indication information based on extracting, and selectively opens or cut out receiving element,
Described one in described at least one PLP comprises the data PLP that will send by it broadcast data of broadcast service, and
Wherein the control information of which frame after this indication information instruction present frame changes.
31. devices according to claim 30, wherein this frame comprises the superframe that comprises at least one frame.
32. devices according to claim 31, wherein arrange this indication information to change configurable information, and in-band signalling dector extracts this indication information based on superframe one by one.
33. devices according to claim 32, wherein this indication information comprises multiple bits of the superframe that instruction will change.
34. devices according to claim 30, wherein this indication information comprises a bit.
35. devices according to claim 30, wherein arrange this indication information with based on changing frame by frame this control information.
36. devices according to claim 35, wherein this control information comprises multidate information.
37. devices according to claim 36, wherein this multidate information comprises the positional information of described at least one PLP.
38. devices according to claim 30, wherein this control information comprises the map information between the service channel of described at least one PLP and the broadcast data by its transmission broadcast service.
39. devices according to claim 30, wherein, in the time that in this indication information instruction next frame, control information does not change, controller is closed in the receiving element of its place's receiving control information, and is open at the data receiver unit of its place's receiving data information.
40. devices according to claim 30, wherein in the time that in this indication information instruction next frame, control information changes, controller is open at the signaling receiving element of its place's receiving control information, and is open at the data receiver unit of its place's reception data message corresponding with the control information of the change receiving by signaling receiving element.
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| KR1020080024086A KR101162805B1 (en) | 2008-02-21 | 2008-03-14 | Apparatus and method for transmitting/receiving control information in a wireless digital broadcasting system |
| KR10-2008-0024086 | 2008-03-14 | ||
| PCT/KR2009/000825 WO2009104927A2 (en) | 2008-02-21 | 2009-02-20 | Apparatus and method for transmitting and receiving a frame including control information in a broadcasting system |
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| KR101636578B1 (en) * | 2010-01-27 | 2016-07-05 | 엘지전자 주식회사 | Apparatus and method for chanel controlling in image display device |
| GB2483238B (en) * | 2010-08-31 | 2017-07-19 | Samsung Electronics Co Ltd | Method and apparatus for signalling in digital radio systems |
| WO2012176457A1 (en) * | 2011-06-24 | 2012-12-27 | パナソニック株式会社 | Transmission device, transmission method, receiving device and receiving method |
| EP2908453B1 (en) * | 2011-06-24 | 2016-11-23 | Sun Patent Trust | Transmission device, transmission method, receiving device and receiving method |
| CN102427576B (en) * | 2011-08-26 | 2017-02-15 | 中兴通讯股份有限公司 | Transmitting and receiving method and device for broadcasting control frame |
| US20160227274A1 (en) * | 2013-09-15 | 2016-08-04 | Lg Electronics Inc. | Broadcast receiving device and method for operating the same |
| WO2016125990A1 (en) * | 2015-02-04 | 2016-08-11 | 엘지전자(주) | Apparatus and method for transreceiving broadcast signals |
| KR101889798B1 (en) | 2015-03-24 | 2018-08-20 | 엘지전자 주식회사 | Apparatus and method for sending and receiving broadcast signals |
| MX2017013958A (en) * | 2015-05-08 | 2018-01-16 | Sony Corp | Communication device and communication method. |
| WO2016203750A1 (en) * | 2015-06-19 | 2016-12-22 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ | Transmission method, reception method, transmission device, and reception device |
| JP2017011689A (en) * | 2015-06-19 | 2017-01-12 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | Transmission method, reception method, transmission device and reception device |
| CA3028941A1 (en) | 2016-07-08 | 2018-01-11 | Sony Semiconductor Solutions Corporation | Reception device, transmission device, and data processing method |
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| US5404355A (en) * | 1992-10-05 | 1995-04-04 | Ericsson Ge Mobile Communications, Inc. | Method for transmitting broadcast information in a digital control channel |
| KR20050101006A (en) * | 2004-04-16 | 2005-10-20 | 삼성전자주식회사 | Method for the efficient transmission of the control message for mbms in mobile communication |
| KR101029812B1 (en) * | 2004-10-18 | 2011-04-18 | 엘지전자 주식회사 | Method of feedback of MIMO mode and permutation type in OFDM/OFDMA mobile communications system |
| KR100664178B1 (en) * | 2004-11-13 | 2007-01-04 | 엘지전자 주식회사 | Channel information update method for digital multimedia broadcasting receiver |
| KR100698273B1 (en) * | 2005-06-03 | 2007-03-22 | 엘지전자 주식회사 | A multi media broadcasting system and a multi media broadcasting channel management method |
| CN101022329A (en) * | 2006-02-15 | 2007-08-22 | 华为技术有限公司 | Signal transmitting method and system used for digital multimedia broadcasting |
| US8185726B2 (en) * | 2006-04-27 | 2012-05-22 | Qualcomm Incorporated | Sleep optimization based on system information block scheduling |
| JP4776451B2 (en) * | 2006-06-19 | 2011-09-21 | 株式会社エヌ・ティ・ティ・ドコモ | Base station, mobile station and communication method |
| CN100456659C (en) * | 2006-08-09 | 2009-01-28 | 北京泰美世纪科技有限公司 | Method for sending control information to indicate operation of receiver |
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| CN101953133A (en) | 2011-01-19 |
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| ES2677344T3 (en) | 2018-08-01 |
| RU2450474C2 (en) | 2012-05-10 |
| AU2009216037B2 (en) | 2013-05-02 |
| JP2011517377A (en) | 2011-06-02 |
| MY157527A (en) | 2016-06-15 |
| RU2010134894A (en) | 2012-02-27 |
| JP5175942B2 (en) | 2013-04-03 |
| KR101162805B1 (en) | 2012-07-05 |
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