CN101998273A - Method and system for indicating sending, transmitting and receiving of physical downlink control information - Google Patents
Method and system for indicating sending, transmitting and receiving of physical downlink control information Download PDFInfo
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- CN101998273A CN101998273A CN2009101684214A CN200910168421A CN101998273A CN 101998273 A CN101998273 A CN 101998273A CN 2009101684214 A CN2009101684214 A CN 2009101684214A CN 200910168421 A CN200910168421 A CN 200910168421A CN 101998273 A CN101998273 A CN 101998273A
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Abstract
The invention discloses a method and a system for indicating the sending, the transmitting and the receiving of physical downlink control information, wherein information indicating an OFDM (Orthogonal Frequency Division Multiplexing) symbolic number occupied by PDCCHs (Physical Downlink Control Channels) in MBSFN (Multicast Broadcast Single Frequency Network) subframes is sent by being loaded in MBMS (Multimedia Broadcast and Multicast Service) dynamic scheduling information or an MCCH (Multicast Control Channel) or an SIB (System Information Block) 2 so as to avoid that a receiving end for receiving the MBMS detects the PCFICH information in the MBSFN subframes with MBMS, concerned by the receiving end, one by one. When a unicast receiving end receives the OFDM symbolic number occupied by the PDCCHs in the MBSFN subframes in the SIB2, the OFDM symbolic configuration information of the PDCCHs of all MBSFN subframes in a BCCH (Broadcast Control Channel) modification period within a period of time is acquired, and the condition that the receiving end receives and analyzes PHFICH from the MBSFN subframes one by one can be avoided.
Description
Technical field
The present invention relates to LTE (Long Term Evolution) multimedia broadcasting and multicast (Multimedia Broadcast Multicast Service, MBMS) business, be particularly related to multimedia broadcasting single frequency network (the Multimedia Broadcast multicastservice Single Frequency Network of indication bearer service, MBSFN) Physical Downlink Control Channel (Physical Downlink Control Channel in the subframe, the OFDM that PDCCH) takies (Orthogonal Frequency Division Multiplexing, OFDM) carrying of the information of symbol sends, transmission and the method and the transmitting terminal that receive, receiving terminal and system.
Background technology
Along with the fast development of Internet and popularizing of large-screen multi-functional mobile phone, a large amount of mobile data multimedia services and various high bandwidth multimedia service have appearred, for example, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., this has satisfied the business demand that the mobile subscriber constantly rises on the one hand, also brings new business growth point for mobile operator simultaneously.These mobile data multimedia services require a plurality of users can receive identical data simultaneously, compare with general data service, have characteristics such as data volume is big, longer duration, delay sensitive.
In order to effectively utilize mobile network resource, third generation partner program (3rdGeneration Partnership Project, abbreviate 3GPP as) the MBMS business proposed, this business is a kind of technology that transmits data from a data source to a plurality of targets, realize sharing of network (comprising core net and Access Network) resource, improved the utilance of Internet resources (especially air interface resource).The MBMS of 3GPP definition not only can realize the classes of messages multicast and the broadcasting of plain text low rate, but also can realize the broadcasting and the multicast of high-speed multimedia business, multiple rich video, audio frequency and multimedia service are provided, this has complied with the trend of following mobile data development undoubtedly, for the development of 3G provides better professional prospect.
In LTE, use the part of MBSFN subframe to carry the MBMS business about regulation among the Release 9 at present, the collocation method of MBSFN subframe can be with reference to related protocol, for example, have a detailed description among the system information block SIB2 in LTE agreement 36.331 (System InformationBlock).Following MBSFN subframe is meant the MBSFN subframe of carrying MBMS business.The MBSFN subframe structure as shown in Figure 1, the left side is that PDCCH takies the 1st OFDM in front (Orthogonal Frequency Division Multiplexing) schematic symbol diagram, the right takies the 1st, 2 OFDM schematic symbol diagram for PDCCH, has expansion later on.
It is unicast service (unicast service) service that the PDCCH channel is only arranged in the MBSFN subframe of carrying MBMS business at present, data field (Physical Downlink SharedCHannel wherein, PDSCH) data that do not have unicast service in, the back data field is used for sending the MBMS business, so, among the PDCCH of the MBSFN subframe front of carrying MBMS business among the PDSCH of content and back data it doesn't matter, for the receiving terminal that receives MBMS, be actually (foregoing data field is used for sending the MBMS business because of actual, so be also referred to as Physical Multicast Channel PMCH (Physical Multicast CHannel)) that do not need to receive PDCCH.And the OFDM symbol that the PDCCH of the professional MBSFN subframe of each carrying MBMS takies may be inequality.Receiving terminal has only Physical Control Format Indicator Channel (the Physical Control Format Indicator Channel that is positioned in this subframe on first OFDM symbol by receiving at present, PCFICH) information, and just can know the OFDM symbolic number that PDCCH takies in this MBSFN subframe after resolving.For the receiving terminal that receives the MBMS business, after the OFDM symbolic number that PDCCH takies in the MBSFN subframe of the definite carrying of needs MBMS business, further calculate and know the resource that the MBMS business takies in this subframe, therefore the receiving terminal that receives the MBMS business need receive the OFDM symbol that parsing PCFICH wherein determines that PDCCH takies one by one to each MBSFN subframe, thereby deduct the resource that OFDM symbol that PDCCH takies is known PMCH in this subframe with all OFDM symbolic numbers in this subframe then, promptly carry the resource of MBMS business.More loaded down with trivial details when receiving the MBMS business so as can be seen.
For the receiving terminal that receives unicast service, subframe is monitored PDCCH one by one in addition.Detailed process can know after the parsing that at first to receive the PCFICH channel information that is positioned in the subframe on first OFDM symbol this subframe PDCCH takies the OFDM symbolic number, receives then to resolve PDCCH, and retrieval sees if there is the control information of oneself.This section described subframe comprises MBSFN subframe and Non-MBSFN subframe.
Summary of the invention
The present invention is in order to address the above problem, if send the information of the OFDM symbolic number that PDCCH takies in the MBSFN subframe by high-level signaling, also receive this information if receiving the receiving terminal of unicast service, then can avoid this Terminal Type to retrieve the PCFICH channel information of MBSFN subframe one by one.
Be convenient to receive the OFDM symbol numbers that PDCCH takies in the disposable MBSFN subframe of knowing each carrying MBMS business in a period of time of the receiving terminal of MBMS business, also be convenient to the OFDM symbolic number that the unicast service receiving terminal knows that PDCCH takies in the MBSFN subframe of each carrying MBMS business, proposed to be carried on MBMS service dynamic schedule information originally being carried on the indication information that indication PDCCH in the PCFICH channel takies OFDM symbol situation, perhaps MCCH perhaps sends among the SIB2.
The invention provides a kind of sending method of indicating Physical Downlink Control Channel information, the information-bearing of the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe sends in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Above-mentioned MBSFN subframe is the MBSFN subframe of carrying MBMS business; Or do not carry the MBSFN subframe of MBMS business.
Further, the concrete bearing mode of the above-mentioned MBMS of being carried on dynamic scheduling information is, described transmitting terminal is got involved the control unit MAC CE that controls to the OFDM symbolic number that the PDCCH that indicates MBSFN subframe in the dynamic scheduling information takies as one or more independently information units in the dynamic scheduling information or medium, or forms an information unit transmission with other existing information.
Further, the concrete bearing mode of the above-mentioned MCCH of being carried on information is, the OFDM symbolic number that described transmitting terminal takies PDCCH in each MBSFN subframe of carrying MBMS business in carrying one or more dynamic dispatching cycle of indication, perhaps,
MCCH of carrying indication revises PDCCH takies in each the MBSFN subframe of the carrying MBMS business in the cycle OFDM symbolic number as the one or more independently information units in the described MCCH information, or and other existing information form an information unit and send.
Further, the concrete bearing mode of said system block of information SIB2 is, the OFDM symbolic number that described transmitting terminal takies PDCCH in interior all MBSFN subframes of BCCH modification cycle of indication can be used as the one or more independently information units among the SIB2, or sends with information unit of other existing information composition.
Further, above-mentioned MCCH information has repetition period and modification cycle, and each repetition period does not allow MCCH information to make amendment, and each modification cycle can allow to revise MCCH information when arriving;
Wherein, above-mentioned each modification cycle comprises one or more repetition period.
The invention provides a kind of method of reseptance of indicating Physical Downlink Control Channel information, receive the receiving terminal of MBMS business, on the professional relevant signaling of MBMS, receive indication Physical Downlink Control Channel information, resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
Further, the professional relevant signaling of above-mentioned MBMS is a MBMS service dynamic schedule information, after receiving this information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in the dynamic dispatching cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business;
Wherein, the professional relevant signaling of above-mentioned MBMS is a MCCH information, after this information is resolved in reception, can know that PDCCH takies OFDM symbol situation in each the MBSFN subframe in the MCCH information management cycle.Behind the OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by converting, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business;
Wherein, the above-mentioned MCCH management cycle is that MCCH revises cycle or MCCH repetition period;
Further, stating the professional relevant signaling of MBMS is SIB2 information, for the receiving terminal that receives the MBMS business, after receiving parsing SIB2 information, knowing in the BCCH modification cycle that PDCCH takies OFDM symbol situation in each MBSFN subframe, after the OFDM symbolic number that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
Further, the professional relevant signaling of above-mentioned MBMS is a SIB2 information, professional uninterested or do not receive the receiving terminal of MBMS professional ability to MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
The invention provides a kind of indication Physical Downlink Control Channel transmission of Information method, the information-bearing of the OFDM symbolic number that PDCCH takies in the transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Receive the receiving terminal of MBMS business, on the professional relevant signaling of MBMS, receive indication Physical Downlink Control Channel information, resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business;
Wherein, the professional relevant signaling of above-mentioned MBMS is multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2.
Further, above-mentioned receiving terminal for reception MBMS business is resolved wherein, and data are specially, after resolving the professional relevant signaling information of reception MBMS, the PDCCH that can know each MBSFN subframe of the described MBMS business of carrying takies OFDM symbol situation, after the OFDM symbolic number that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business;
Describedly resolve wherein to the professional receiving terminal uninterested or that do not receive the MBMS professional ability of MBMS that data are specially, after resolving the professional SIB2 information of reception MBMS, the PDCCH that can know each MBSFN subframe of the described MBMS business of carrying takies OFDM symbol situation, can avoid receiving the OFDM symbolic number that the PCFICH channel information determines that the PDCCH in the described subframe takies for this Terminal Type.
The invention provides a kind of transmitting terminal of indicating Physical Downlink Control Channel information, comprise carrier module and sending module, carrier module is used in the relevant signaling of the information-bearing of the OFDM symbolic number of indicating MBSFN subframe PDCCH to take;
Sending module is used to the information-bearing of the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe to send in described relevant signaling.
Further, above-mentioned relevant signaling is multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2.
The invention provides a kind of receiving terminal of indicating Physical Downlink Control Channel information, comprise receiver module and parsing module, receiver module is used for receiving indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS;
Parsing module is used to resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
Wherein, receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or MCCH information management cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
Further, it is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that above-mentioned receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies;
The invention provides a kind of system that indicates Physical Downlink Control Channel information, comprise transmitting terminal, receiving terminal, the information-bearing of the OFDM symbolic number that PDCCH takies in the described transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Further, above-mentioned receiving terminal receives the MBMS business, receives indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS, resolves wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
Wherein, receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or MCCH information management cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
Wherein, it is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that above-mentioned receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
When using MBMS dynamic scheduling information or MCCH or SIB2 to carry described information, the OFDM symbol that can take for the PDCCH of system configuration MBSFN subframe is more flexible, configuration cycle can be shorter, can evade receiving terminal MBSFN subframe reception parsing PCFICH one by one.Professional uninterested or do not receive the receiving terminal of MBMS professional ability to MBMS, after the clean culture receiving terminal has received the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe among the SIB2, thereby can evade receiving terminal MBSFN subframe reception parsing PCFICH one by one.
Description of drawings
Fig. 1 is that the PDCCH in the MBSFN subframe takies the OFDM schematic symbol diagram
Fig. 2 is the figure that spreads that the PDCCH in the MBSFN subframe takies the OFDM symbol transmission
Fig. 3 is the position view of PCFICH in the MBSFN subframe
Fig. 4 is indication physical down control information transmitting terminal and receiving terminal and system
Embodiment
The present invention is in order to address the above problem, send the information of the OFDM symbolic number that PDCCH takies in the MBSFN subframe by high-level signaling, also receive this information if receiving the receiving terminal of unicast service, then can avoid this Terminal Type to retrieve the PCFICH channel information of MBSFN subframe one by one.
Below we provide a kind of symbolic number that takies by PDCCH in the high-level signaling notice terminal MBSFN subframe.Thereby all bring benefit for the reception of unicast service and the reception of MBMS business.
In order to further specify the present invention, be elaborated below in conjunction with drawings and Examples.
Embodiment 1
The content that present embodiment is described is carried the OFDM symbol situation that PDCCH takies in each MBSFN subframe of indicating carrying MBMS business in the dynamic dispatching cycle as shown in Figure 1 in MBMS service dynamic schedule information.
MBMS service dynamic schedule information is to be used for managing the information that the scheduling of all the MBMS business in the MBMS dynamic dispatching cycle sends, a MBMS dynamic dispatching cycle is generally 160ms or 320ms, do not stipulate in the agreement at present, here be assumed to be 320ms earlier, each MBMS business datum in the 320ms adopts any mode to send on those resources of those MBSFN subframes so, is all managed by dynamic scheduling information.In the present embodiment, the OFDM symbol situation information-bearing that PDCCH in the MBSFN subframe of all carrying MBMS business in indication MBMS dynamic dispatching cycle is taken sends to receiving terminal at dynamic scheduling information.
Concrete bearing mode, the OFDM symbolic number that transmitting terminal takies the PDCCH of MBSFN subframe in dynamic scheduling information of indication gets involved control unit (the Medium AccessControl control element of control as one or more independently information units in the dynamic scheduling information or medium, MAC CE), also can form an information unit with other existing information sends.
According to present embodiment, receive the receiving terminal of MBMS business, before receiving own interested MBMS business datum, at first receive MBMS service dynamic schedule information, to know on own interested business those MBSFN subframes in the dynamic dispatching cycle, the PDCCH that can know each MBSFN subframe of carrying MBMS business simultaneously from dynamic scheduling information takies OFDM symbol situation, the PDCCH that comprises the MBSFN subframe at the professional place of MBMS that oneself will receive takies situation, by simple conversion, promptly deduct the OFDM symbolic number gained that PDCCH takies in this subframe and be the professional resource of using of MBMS with total OFDM symbolic number of MBSFN subframe.The receiving terminal that receives the MBMS business so directly go to receive on the MBMS service resources on the OFDM symbol of own interested professional place data parsing wherein data get final product the described agreement specified process such as channel estimating, decoding that resolve to.
If do not adopt said method, the receiving terminal that then receives MBMS is to receive PCFICH channel information in the MBSFN subframe of resolving the professional place of own interested MBMS one by one, to know PDCCH takies in this subframe OFDM symbolic number.Adopt said method, thereby the receiving terminal of avoiding receiving the MBMS business detects the PCFICH channel information in the MBSFN subframe at the professional place of own interested MBMS one by one.PCFICH position such as Fig. 3 in the MBSFN subframe illustrates.
Notice that for the MBSFN subframe of carrying MBMS business, the OFDM symbol in the subframe except the OFDM symbol that PDCCH takies all is used for carrying the MBMS business.
Transmitting terminal can be base station, relay station, and receiving terminal can be relay station, terminal, notebook computer.
Embodiment 2
The content that present embodiment is described as shown in Figure 1, the OFDM symbol situation that PDCCH takies in each MBSFN subframe of carrying MBMS business in carrying one or more dynamic dispatching cycle of indication in multicast control channel (MCCH, the Multicast Control Channel) information.
MCCH information is dynamic dispatching cycle of management usually, or manage a plurality of dynamic dispatching cycles, this depends primarily on the size in MCCH repetition period (MCCH repetition period) and dynamic dispatching cycle, if the MCCH repetition period is the same with the dynamic scheduling information cycle when big, dynamic dispatching cycle of MCCH information management so, if the dynamic scheduling information cycle is less, a plurality of dynamic dispatching cycles of MCCH information management so.
Suppose that MCCH information is to be used for managing a MBMS dynamic dispatching cycle,, PDCCH in each MBSFN subframe of all carrying MBMS business of this MCCH information management is taken OFDM symbol advisory receiving terminal so according to present embodiment.Concrete bearing mode can be used as the one or more independently information units in the MCCH information, also can form an information unit with other existing information and send.
Suppose that MCCH information is to be used for managing a plurality of MBMS dynamic dispatching cycles, according to present embodiment, PDCCH in each MBSFN subframe of carrying MBMS business in a plurality of dynamic dispatching cycle of this MCCH information management is taken OFDM symbol advisory receiving terminal so.Concrete bearing mode can be used as the one or more independently information units in the MCCH information, also can form an information unit with other existing information and send; Promptly exactly out of Memory and above-mentioned information are placed in the same information unit.
According to present embodiment, receive the receiving terminal of MBMS business, before receiving own interested MBMS business datum, at first receive MCCH information, with the relevant information of the information of knowing the dynamic dispatching cycle and other and MBMS business, indicate that PDCCH takies OFDM symbol situation in each MBSFN subframe in the MCCH information management cycle in addition.Behind the OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by simple conversion, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business.In conjunction with dynamic scheduling information, receiving terminal just can correctly receive the MBMS business datum, resolves wherein data so again.
Thereby avoid receiving terminal to detect PCFICH channel information in the MBSFN subframe at the professional place of own interested MBMS one by one.PCFICH position such as Fig. 3 in the MBSFN subframe illustrates.
Notice that for the MBSFN subframe of carrying MBMS business, the OFDM symbol in the subframe except the OFDM symbol that PDCCH takies all is used for carrying the MBMS business.
Embodiment 3
The present embodiment content description carries the OFDM symbol situation that PDCCH takies in each MBSFN subframe of indicating the carrying MBMS business in MCCH modification cycle (MCCH modification period) as shown in Figure 1 in MCCH information.
MCCH information has repetition period and modification cycle, and each repetition period does not allow MCCH information to make amendment, and each modification cycle can allow to revise MCCH information when arriving.Generally, a modification cycle comprises one or more repetition period.
Suppose in the MCCH information that MCCH of carrying indication revises that PDCCH takies OFDM symbol advisory receiving terminal in each the MBSFN subframes of all carrying MBMS business in the cycle.Concrete bearing mode can be used as the one or more independently information units in the MCCH information, also can form an information unit with other existing information and send.And each MCCH in this modification cycle sent in the repetition period described indication information, and each repetition period does not allow to change.The receiving terminal of being convenient to like this insert in the middle of MCCH revises the cycle in time receives described indication information.
According to present embodiment, receive the receiving terminal of MBMS business, before receiving own interested MBMS business datum, at first receive MCCH information, to know in the modification cycle that PDCCH takies OFDM symbol situation in each MBSFN subframe.Behind the OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by simple conversion, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business.In conjunction with dynamic scheduling information, receiving terminal just can correctly receive the MBMS business datum, resolves wherein data so again.
Thereby avoid receiving terminal to detect PCFICH channel information in the MBSFN subframe at the professional place of own interested MBMS one by one.PCFICH position such as Fig. 3 in the MBSFN subframe illustrates.
Notice that for the MBSFN subframe of carrying MBMS business, the OFDM symbol in the subframe except the OFDM symbol that PDCCH takies all is used for carrying the MBMS business.
Embodiment 4
The present embodiment content description carries the information of the OFDM symbolic number situation that PDCCH takies in the indication MBSFN subframe as shown in Figure 1 in SIB2.Indicate information the present invention of the OFDM symbolic number situation that PDCCH takies in the MBSFN subframe to call indication information described.
Indication information can indicate a BCCH and revise the cycle (modificationperiod, BCCH) the OFDM symbolic number that PDCCH takies in interior all MBSFN subframes like this; SIB2 is the part of BCCH information, has identical period of change.
Suppose among the SIB2 that BCCH of carrying indication revises in the cycle that PDCCH takies OFDM symbol situation and notifies receiving terminal in all MBSFN subframes.Concrete bearing mode can be used as the one or more independently information units among the SIB2, also can form an information unit with other existing information and send.
According to existing protocol, carried a lot of important system informations (specifically referring to SIB2 in 36.331 agreements content) among the SIB2, be that all receiving terminals all must receive.Present embodiment, suggestion also is carried on described indication information among the SIB2, will allow all receiving terminals can the described indication information of receiving terminal like this, thereby knows that BCCH revises the OFDM symbolic number that PDCCH takies in the interior MBSFN subframe of cycle.
According to present embodiment, receive the receiving terminal of MBMS business, need to receive SIB2, MCCH information, dynamic scheduling information etc.; SIB2 is the information of Broadcast Control Channel, all receiving terminals all must receive, thereby know the MBSFN sub-frame information at the professional place of own interested MBMS, simultaneously in SIB2 is known the BCCH modification cycle each MBSFN subframe PDCCH take OFDM symbol situation.Behind the OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by converting, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business.In conjunction with dynamic scheduling information, receiving terminal just can correctly receive the MBMS business datum, resolves wherein data so again.
Thereby the receiving terminal of avoiding receiving the MBMS business detects the PCFICH channel information in the MBSFN subframe at the professional place of own interested MBMS one by one.
When using MBMS dynamic scheduling information or MCCH to carry described information, because the two changes with respect to SIB12 (standard is carried in SIB12 at present) is than faster, the OFDM symbol that can take for the PDCCH of system configuration MBSFN subframe is more flexible, and configuration cycle can be shorter.
When using SIB2 to carry described information, with respect to SIB12, SIB2 is that all receiving terminals all need to receive, described receiving terminal comprises unicast service receiving terminal, multicast service receiving terminal, and SIB12 just receives the professional interested receiving terminal of MBMS, and is uninterested or do not have the receiving terminal of MBMS professional ability not receive.Therefore, the information-bearing of the OFDM symbolic number that PDCCH in the described indication MBSFN subframe is taken is in SIB2, the clean culture receiving terminal can be obtained and this information can be received in passing (because SIB2 goes up the information that also has other clean culture receiving terminals to receive, " in passing " thus), after the clean culture receiving terminal has received the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe among the SIB2, just can know Broadcast Control Channel (Broadcast Control Channel in a period of time, BCCH) the OFDM symbol configuration information of the PDCCH of all MBSFN subframes in the modification cycle, thus receiving terminal MBSFN subframe reception parsing PCFICH one by one can be evaded.
According to present embodiment as shown in Figure 3,, also can receive the system information among the SIB2, so also known described indication information simultaneously for professional uninterested or do not receive the receiving terminal of MBMS professional ability to MBMS.So, for the receiving terminal that receives unicast service, revise the OFDM symbolic number that PDCCH takies in all MBSFN subframes in the cycle owing to known a BCCH, so for this class receiving terminal, can avoid receiving one by one the PCFICH information of resolving in the MBSFN subframe and determine the OFDM symbolic number that the PDCCH of this subframe takies, thereby, time, electric energy have been saved for this class receiving terminal provides convenience.
Notice that for the MBSFN subframe of carrying MBMS business, the OFDM symbol in the subframe except the OFDM symbol that PDCCH takies all is used for carrying the MBMS business.
The present invention provides a kind of indication Physical Downlink Control Channel transmission of Information method by the above embodiments combination, as shown in Figure 2,
Step 101, the information-bearing of the OFDM symbolic number that PDCCH takies in the transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Wherein, indication information can be used as the one or more independently information units among the SIB2, or and information unit transmission of other existing information composition.
Step 102, the receiving terminal of reception MBMS business, data on the professional place OFDM symbol that receives demand on the MBMS service resources are resolved wherein data.
Wherein, behind the receiving terminal OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business.
For professional uninterested or do not receive the receiving terminal of MBMS professional ability, also can receive the system information among the SIB2, so also known described indication information simultaneously to MBMS.So, for the receiving terminal that receives unicast service, revise the OFDM symbolic number that PDCCH takies in all MBSFN subframes in the cycle owing to known a BCCH.
Transmitting terminal can be base station, relay station, and receiving terminal can be relay station, terminal, notebook computer.
The present invention is by the method combination of the above embodiments 1,2,3,4, as shown in Figure 4
A kind of transmitting terminal of indicating Physical Downlink Control Channel information is provided, comprises carrier module and sending module,
Above-mentioned carrier module is used in the relevant signaling of information-bearing of the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe.
Above-mentioned sending module is used to the information-bearing of the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe to send in described relevant signaling.
Above-mentioned relevant signaling is multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2.
The present invention provides a kind of receiving terminal of indicating Physical Downlink Control Channel information by the method combination of the above embodiments 1,2,3,4, comprises, and receiver module and parsing module,
Above-mentioned receiver module is used for receiving indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS;
Above-mentioned parsing module is used to resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
Further, receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or the MCCH information, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
Further, it is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2 again, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies; Or be used for MBMS professional uninterested or do not receive the receiving terminal of MBMS professional ability owing to must receive the system information among the SIB2, so also received indication information simultaneously.
The method of the present invention by the above embodiments 1,2,3,4 is in conjunction with a kind of indication Physical Downlink Control Channel transmission of Information system is provided, comprise transmitting terminal, receiving terminal, the information-bearing of the OFDM symbolic number that PDCCH takies in the transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Receiving terminal receives the MBMS business, receives indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS, resolves wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
Receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or MCCH information management cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
It is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that above-mentioned receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (22)
1. sending method of indicating Physical Downlink Control Channel information, it is characterized in that the information-bearing of the orthogonal frequency division multiplex OFDM symbolic number that physical downlink control channel PDCCH takies in the indication multimedia broadcasting single frequency network MBSFN subframe sends in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Described MBSFN subframe is the MBSFN subframe of carrying MBMS business; Or do not carry the MBSFN subframe of MBMS business.
2. according to the sending method of the described indication Physical Downlink Control Channel of claim 1 information, it is characterized in that, the concrete bearing mode of the described MBMS of being carried on dynamic scheduling information is, described transmitting terminal is got involved the control unit MAC CE that controls to the OFDM symbolic number that the PDCCH that indicates MBSFN subframe in the dynamic scheduling information takies as one or more independently information units in the dynamic scheduling information or medium, or forms an information unit transmission with other existing information.
3. according to the sending method of the described indication Physical Downlink Control Channel of claim 1 information, it is characterized in that, the concrete bearing mode of the described MCCH of being carried on information is, the OFDM symbolic number that described transmitting terminal takies PDCCH in each MBSFN subframe of carrying MBMS business in carrying one or more dynamic dispatching cycle of indication, perhaps
MCCH of carrying indication revises PDCCH takies in each the MBSFN subframe of the carrying MBMS business in the cycle OFDM symbolic number as the one or more independently information units in the described MCCH information, or and other existing information form an information unit and send.
4. according to the sending method of the described indication Physical Downlink Control Channel of claim 1 information, it is characterized in that, the concrete bearing mode of described system information block SIB2 is, the OFDM symbolic number that described transmitting terminal takies PDCCH in interior all MBSFN subframes of BCCH modification cycle of indication can be used as the one or more independently information units among the SIB2, or sends with information unit of other existing information composition.
5. according to the sending method of the described indication Physical Downlink Control Channel of claim 3 information, it is characterized in that, described MCCH information has repetition period and modification cycle, and each repetition period does not allow MCCH information to make amendment, and each modification cycle can allow to revise MCCH information when arriving;
Described each modification cycle comprises one or more repetition period.
6. method of reseptance of indicating Physical Downlink Control Channel information, it is characterized in that, receive the receiving terminal of MBMS business, on the professional relevant signaling of MBMS, receive indication Physical Downlink Control Channel information, resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
7. according to the method for reseptance of right 6 described indication Physical Downlink Control Channel information, it is characterized in that, the professional relevant signaling of described MBMS is a MBMS service dynamic schedule information, after receiving this information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in the dynamic dispatching cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
8. according to the method for reseptance of right 6 described indication Physical Downlink Control Channel information, it is characterized in that, the professional relevant signaling of described MBMS is a MCCH information, after this information is resolved in reception, can know that PDCCH takies OFDM symbol situation in each the MBSFN subframe in the MCCH information management cycle.Behind the OFDM symbol that PDCCH takies in MBSFN subframe of knowing each carrying MBMS business, by converting, promptly from the MBSFN subframe, remove the OFDM symbol that PDCCH takies after, remaining OFDM symbol is the resource of carrying MBMS business;
The described MCCH management cycle is that MCCH revises cycle or MCCH repetition period.
9. according to the method for reseptance of right 8 described indication Physical Downlink Control Channel information, it is characterized in that, the professional relevant signaling of described MBMS is a SIB2 information, for the receiving terminal that receives the MBMS business, after receiving parsing SIB2 information, to know in the BCCH modification cycle that PDCCH takies OFDM symbol situation in each MBSFN subframe, after the OFDM symbolic number that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
10. according to the method for reseptance of the described indication Physical Downlink Control Channel of claim 6 information, it is characterized in that, the professional relevant signaling of described MBMS is a SIB2 information, professional uninterested or do not receive the receiving terminal of MBMS professional ability to MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
11. indication Physical Downlink Control Channel transmission of Information method, it is characterized in that the information-bearing of the OFDM symbolic number that PDCCH takies in the transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Receive the receiving terminal of MBMS business, on the professional relevant signaling of MBMS, receive indication Physical Downlink Control Channel information, resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
12., it is characterized in that the professional relevant signaling of described MBMS is multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2 according to right 11 described transmission methods.
13. according to right 11 described transmission methods, it is characterized in that, described receiving terminal for reception MBMS business is resolved wherein, and data are specially, after resolving the professional relevant signaling information of reception MBMS, the PDCCH that can know each MBSFN subframe of the described MBMS business of carrying takies OFDM symbol situation, after the OFDM symbolic number that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
14. according to right 11,12 described transmission methods, it is characterized in that, describedly resolve wherein to the professional receiving terminal uninterested or that do not receive the MBMS professional ability of MBMS that data are specially, after resolving the professional SIB2 information of reception MBMS, the PDCCH that can know each MBSFN subframe of the described MBMS business of carrying takies OFDM symbol situation, can avoid receiving the OFDM symbolic number that the PCFICH channel information determines that the PDCCH in the described subframe takies for this Terminal Type.
15. a transmitting terminal of indicating Physical Downlink Control Channel information is characterized in that, comprises carrier module and sending module,
Described carrier module is used in the relevant signaling of the information-bearing of the OFDM symbolic number of indicating MBSFN subframe PDCCH to take;
Described sending module is used to the information-bearing of the OFDM symbolic number that PDCCH takies in the indication MBSFN subframe to send in described relevant signaling.
16. transmitting terminal according to claim 14 is characterized in that, described relevant signaling is multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2.
17. a receiving terminal of indicating Physical Downlink Control Channel information is characterized in that, comprises, and receiver module and parsing module,
Described receiver module is used for receiving indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS;
Described parsing module is used to resolve wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
18. receiving terminal according to claim 17, it is characterized in that, receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or MCCH information management cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
19. receiving terminal according to claim 17, it is characterized in that, it is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that described receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
20. a system that indicates Physical Downlink Control Channel information comprises transmitting terminal, receiving terminal, it is characterized in that,
The information-bearing of the OFDM symbolic number that PDCCH takies in the described transmitting terminal indication MBSFN subframe sends to receiving terminal in multimedia broadcasting and multicast MBMS dynamic scheduling information or multicast control channel MCCH or system information block SIB2;
Described receiving terminal receives the MBMS business, receives indication Physical Downlink Control Channel information on the professional relevant signaling of MBMS, resolves wherein data, with the OFDM symbolic number of knowing that PDCCH takies in the MBSFN subframe.
21. system according to claim 20, it is characterized in that, receiving the professional relevant signaling of described MBMS, after receiving the described relevant signaling information of parsing, can be informed in the position of the concrete MBSFN subframe at the interested MBMS business of institute place in dynamic dispatching cycle or MCCH information management cycle, the PDCCH of knowing each MBSFN subframe of the described MBMS business of carrying simultaneously takies OFDM symbol situation, behind the OFDM symbol that PDCCH takies in the MBSFN subframe of knowing each carrying MBMS business, by converting, promptly remove the OFDM symbol that PDCCH takies from the MBSFN subframe after, remaining OFDM symbol is the resource of carrying MBMS business.
22. system according to claim 20, it is characterized in that, it is that MBMS is professional uninterested or do not receive the receiving terminal of MBMS professional ability that described receiving terminal receives the professional relevant signaling of described MBMS, after receiving parsing SIB2, after the OFDM symbolic number that PDCCH takies in the described MBSFN subframe in the BCCH modification cycle of knowing, directly receive and resolve PDCCH, no longer need to receive the Physical Control Format Indicator Channel PCFICH that resolves in the described MBSFN subframe, know the OFDM symbolic number that the PDCCH in the described MBSFN subframe takies.
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| CN2009101684214A CN101998273A (en) | 2009-08-16 | 2009-08-16 | Method and system for indicating sending, transmitting and receiving of physical downlink control information |
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| CN2009101684214A CN101998273A (en) | 2009-08-16 | 2009-08-16 | Method and system for indicating sending, transmitting and receiving of physical downlink control information |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014040299A1 (en) * | 2012-09-17 | 2014-03-20 | 华为技术有限公司 | Method and relative device for indicating and identifying physical resource block (prb) |
| CN104349431A (en) * | 2013-07-25 | 2015-02-11 | 北京久华信信息技术有限公司 | Transmission method for wireless communication system downlink indication information |
| CN106538009A (en) * | 2014-05-22 | 2017-03-22 | 华为技术有限公司 | Signal transmission method and apparatus |
| WO2018188095A1 (en) * | 2017-04-14 | 2018-10-18 | 华为技术有限公司 | Communication method and device |
| CN110832907A (en) * | 2017-05-04 | 2020-02-21 | 诺基亚技术有限公司 | Communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014040299A1 (en) * | 2012-09-17 | 2014-03-20 | 华为技术有限公司 | Method and relative device for indicating and identifying physical resource block (prb) |
| CN103828403A (en) * | 2012-09-17 | 2014-05-28 | 华为技术有限公司 | Method and relative device for indicating and identifying physical resource block (prb) |
| US9692610B2 (en) | 2012-09-17 | 2017-06-27 | Huawei Technologies Co., Ltd. | Method and related device for indicating and identifying physical resource block PRB |
| CN104349431A (en) * | 2013-07-25 | 2015-02-11 | 北京久华信信息技术有限公司 | Transmission method for wireless communication system downlink indication information |
| CN106538009A (en) * | 2014-05-22 | 2017-03-22 | 华为技术有限公司 | Signal transmission method and apparatus |
| US10419892B2 (en) | 2014-05-22 | 2019-09-17 | Huawei Technologies Co., Ltd. | Base station signal transmission method, base station and terminal |
| WO2018188095A1 (en) * | 2017-04-14 | 2018-10-18 | 华为技术有限公司 | Communication method and device |
| CN110832907A (en) * | 2017-05-04 | 2020-02-21 | 诺基亚技术有限公司 | Communication system |
| CN110832907B (en) * | 2017-05-04 | 2021-05-25 | 诺基亚技术有限公司 | Communication system |
| CN113259080A (en) * | 2018-08-24 | 2021-08-13 | Oppo广东移动通信有限公司 | Method and apparatus for indicating PDCCH resources |
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