CN102036171A - Transmission method and system for subframe identification information - Google Patents
Transmission method and system for subframe identification information Download PDFInfo
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- CN102036171A CN102036171A CN2009101745966A CN200910174596A CN102036171A CN 102036171 A CN102036171 A CN 102036171A CN 2009101745966 A CN2009101745966 A CN 2009101745966A CN 200910174596 A CN200910174596 A CN 200910174596A CN 102036171 A CN102036171 A CN 102036171A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
The invention relates to a transmission method and a system for subframe identification information, belonging to the field of communication. The method comprises the following steps: a transmitting end transmits the subframe identification information to an R10 receiving end in a physical downlink control channel (PDCCH) configured for transmitting a multicast broadcast single-frequency network (MBSFN) subframe of a physical downlink shared channel (PDSCH) for the R10 receiving end, wherein the subframe identification information is used for indicating that the MBSFN subframe is a multicast MBSFN subframe for transmitting PDSCH of the R10 receiving end. With a technical scheme of the invention, aim of an indication subframe can be effectively implemented, rapidity of indication information can be satisfied, and by adopting the method, the system is suitable for transmitting the indication information without increasing complexity of the receiving end.
Description
Technical field
The invention belongs to communication field, particularly a kind of transmission method of subframe identification information 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 (3rd Generation Partnership Project, 3GPP) MBMS (Multimedia Broadcast Multicast Services has been proposed, multimedia broadcast multicast service), 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.
Regulation is used MBSFN (Multicast Broadcast Single Frequency Network in LTE Release 8/9, Multicast Broadcast Single Frequency Network) subframe MBMS transmission business, but not all MBSFN subframe all is used for the MBMS transmission business, the MBSFN subframe also has other purposes, for example positioning service, relay business etc.
At present, regulation among the LTE Release 8/9 uses the dual unit method to dispose the MBSFN radio frames and the MBSFN subframe of carrying MBMS business, specifically describes as follows:
The first order realizes the MBSFN radio frames configuration of carrying MBMS, the equation below satisfying:
SFN?mod?radioFrameAllocationPeriod＝radioFrameAllocationOffset
Wherein SFN is the abbreviation of System Frame Number System Frame Number, is the radio frames numbering of system, from 0 to 1023; RadioFrameAllocationPeriod represents the MBSFN wireless frame period, and it can be got, and { 1,2,4,8,16, any one is worth among the 32}; RadioFrameAllocationOffset represents the skew of MBSFN radio frames, and its value is an integer and less than the numerical value of selected MBSFN wireless frame period, more than or equal to 0; Mod represents that SFN is to radioFrameAllocationPeriod delivery or complementation.
The second level is realized concrete which MBSFN subframe carrying MBMS business that the MBSFN radio frames of carrying MBMS business is interior, use the method indication of bitmap, owing to subframe #0, #4, #5, #9 under the regulation fdd mode among the LTE can not carry the MBMS business, subframe #0, #1, #5, #6 can not carry the MBMS business under the tdd mode, therefore, use the bitmap of 6 bits just can describe which carrying MBMS business of remaining 6 subframes.And the MBSFN sub-frame configuration of the carrying MBMS business in each MBSFN radio frames is identical.Because the dual unit configuration signal sends to terminal on BCCH (Broadcast Control Channel, Broadcast Control Channel), therefore in each BCCH modification cycle, the MBSFN sub-frame configuration in the MBSFN radio frames can not change.
At present, the information that is used for describing the MBSFN sub-frame allocation at LTE Release 8/9 is carried among the SIB2 (System Information Block 2, system information block 2) of BCCH (Broadcast Control Channel, Broadcast Control Channel).The OFDM of MBSFN subframe front (Orthogonal Frequency Division Multiplexing, OFDM) symbol is PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) takies, the OFDM symbol of back is PMCH (Physical Multicast Channel, Physical Multicast Channel) takies, shown in Fig. 1 (a); When MBSFN subframe transmission unicast service, PMCH thereafter becomes PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) accordingly.The detailed description of MBSFN subframe and Non-MBSFN subframe can be with reference to 36.211,36.212 and 36.213 agreements.
And at present, (the R10 receiving terminal can be understood as a class as the R10 receiving terminal to have agreed to use the MBSFN subframe in LTE-Advanced (being also referred to as LTE R10) system, distinguish over the R8/R9 receiving terminal) transmission PDSCH, be to transmit unicast service (unicast) on the PDSCH, just agreed to use the receiving terminal transmission unicast service of MBSFN subframe among the LTE-Advanced as R10.
Consider, in LTE-Advanced, have R10 in the future, R9, the receiving terminal of R8, and adopted new efficient pilot tone in the LTE-Advanced system, R8, the receiving terminal of R9 can not be discerned these new pilot tones, if in a subframe, dispatch R8 simultaneously, R9, the R10 receiving terminal, this subframe must be used old pilot tone, but can cause system effectiveness to descend like this, therefore preferably the receiving terminal of R10 is dispatched in a subframe, this subframe can be used the efficient pilot tone as the design of R10 receiving terminal, and R8, the receiving terminal of R9 does not receive PDSCH on these subframes for the configuration of R10 receiving terminal, directly skip these subframes.According to existing protocol is the PDSCH that directly skips all MBSFN subframes for the R8 receiving terminal, the agreement of R9 is formulated, the R9 receiving terminal also is not receive PDSCH's on the MBSFN subframe so far, therefore can make the MBSFN subframe be R10 receiving terminal transmission PDSCH, but, and do not know which MBSFN subframe can be used for transmitting unicast service into the receiving terminal of R10 because the MBSFN subframe of configuration has more purposes.
Summary of the invention
Technical problem to be solved by this invention is a kind of transmission method and system of subframe identification information to be provided, thereby can be designated as the MBSFN subframe identification information of its transmission unicast service for the R10 receiving terminal.
In order to address the above problem, the invention discloses a kind of transmission method of subframe identification information, comprising:
Transmitting terminal sends the subframe identification information to the R10 receiving terminal in the Physical Downlink Control Channel (PDCCH) of Multicast Broadcast Single Frequency Network (MBSFN) subframe that is configured to R10 receiving terminal transmitting physical DSCH Downlink Shared Channel (PDSCH), wherein, to be used to indicate described MBSFN subframe be multicast MBSFN subframe for R10 receiving terminal transmission PDSCH to described subframe identification information.
Further, in the said method, described R10 receiving terminal detects described subframe identification information on the PDCCH of each subframe, when described R10 receiving terminal detects described subframe identification information, on this subframe, detect the schedule information of the PDSCH of oneself again, receive the PDSCH data according to the PDSCH schedule information then.
Wherein, described transmitting terminal is carried on the default search space of PDCCH with described subframe identification information, and the perhaps Catalog Search space of PDCCH is perhaps in the search space that is calculated by default ad Hoc wireless network temporary mark (RNTI).
Described transmitting terminal is carried on the default search space of described PDCCH with described subframe identification information, perhaps during the Catalog Search space of described PDCCH:
The middle reserved bit of described transmitting terminal by a certain descending control information format of arranging among the described PDCCH be as described subframe identification information, perhaps by added bits in a certain DCI form of arranging among the described PDCCH as described subframe identification information.
The invention also discloses a kind of transmission method of subframe identification information, comprising:
The subframe identification information that transmitting terminal will be configured to Multicast Broadcast Single Frequency Network (MBSFN) subframe of R10 receiving terminal transmission Physical Downlink Shared Channel (PDSCH) sends to the R10 receiving terminal with the forms of broadcasting.
Further, in the said method, described subframe identification information is used to indicate the MBSFN subframe that sends PDSCH in a certain cycle for the R10 receiving terminal, perhaps is used in reference to and is shown all MBSFN subframes that the R10 receiving terminal sends PDSCH.
Described R10 receiving terminal receives described subframe identification information, and detects reception PDSCH data on the MBSFN subframe that sends PDSCH for the R10 receiving terminal of described subframe identification information indication.
Wherein, described transmitting terminal is carried on described subframe identification information in Broadcast Control Channel (BCCH) or the dedicated signaling and periodically sends to the R10 receiving terminal with the forms of broadcasting.
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal among the BCCH, the described subframe identification information of carrying in the system information block (SIB) 2 of described transmitting terminal in described BCCH perhaps increases SIB newly to carry described subframe identification information in described BCCH.
Described transmitting terminal in described BCCH newly-increased SIB when carrying described subframe identification information, described transmitting terminal also is described newly-increased SIB config update announcement information, and whether this update notification information is used to notify the described subframe identification information of described R10 receiving terminal to upgrade.
The shared same update notification information of the update notification information of other SIB among the update notification information of described newly-increased SIB and the BCCH perhaps is the update notification information of the update notification information that is different from other SIB among the BCCH of the update notification information setting special use of described newly-increased SIB.
Described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described newly-increased SIB on beep-page message.
Described transmitting terminal is carried on the schedule information of described newly-increased SIB and sends to described R10 receiving terminal among the SIB1.
Described transmitting terminal sends described update notification information-bearing on the position of PDCCH agreement.
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal in the described dedicated signaling, and the sending mode of described dedicated signaling adopts the broadcast mode of point to multiple spot.
Described transmitting terminal also is described dedicated signaling config update announcement information, whether this update notification information is used to notify the described dedicated signaling of described R10 receiving terminal to upgrade, wherein, described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described dedicated signaling in beep-page message or PDCCH.
Described transmitting terminal is that described dedicated signaling configure dedicated signaling is revised the cycle, and sends described update notification information in the described dedicated signaling modification cycle; Perhaps
Described transmitting terminal only periodically sends described dedicated signaling, and sends described update notification information in each cycle that sends described dedicated signaling.
The invention also discloses a kind of transmission system of subframe identification information, comprise transmitting terminal and R10 receiving terminal, wherein:
Described transmitting terminal, in the Physical Downlink Control Channel (PDCCH) of Multicast Broadcast Single Frequency Network (MBSFN) subframe that is configured to R10 receiving terminal transmitting physical DSCH Downlink Shared Channel (PDSCH), send the subframe identification information to the R10 receiving terminal, wherein, to be used to indicate described MBSFN subframe be multicast MBSFN subframe for R10 receiving terminal transmission PDSCH to described subframe identification information;
Described R10 receiving terminal, on the PDCCH of each subframe, detect described subframe identification information, when described R10 receiving terminal detects described subframe identification information, on this subframe, detect the schedule information of own PDSCH again, then according to PDSCH schedule information reception PDSCH data.
Further, in the said system, described transmitting terminal is carried on described subframe identification information the default search space of PDCCH, the perhaps Catalog Search space of PDCCH is perhaps in the search space that is calculated by default ad Hoc wireless network temporary mark (RNTI).
Described transmitting terminal is carried on the default search space of described PDCCH with described subframe identification information, perhaps during the Catalog Search space of described PDCCH:
The middle reserved bit of described transmitting terminal by a certain descending control information format of arranging among the described PDCCH be as described subframe identification information, perhaps by added bits in a certain DCI form of arranging among the described PDCCH as described subframe identification information.
Further, in the said system, described transmitting terminal, the subframe identification information that also is used for being configured to Multicast Broadcast Single Frequency Network (MBSFN) subframe of R10 receiving terminal transmission Physical Downlink Shared Channel (PDSCH) sends to the R10 receiving terminal with the forms of broadcasting;
Described R10 receiving terminal also is used to receive described subframe identification information, and detects reception PDSCH data on the MBSFN subframe that sends PDSCH for the R10 receiving terminal of described subframe identification information indication.
Described subframe identification information is used to indicate the MBSFN subframe that sends PDSCH in a certain cycle for the R10 receiving terminal, perhaps is used in reference to be shown all MBSFN subframes that the R10 receiving terminal sends PDSCH.
Described transmitting terminal is carried on described subframe identification information in Broadcast Control Channel (BCCH) or the dedicated signaling and periodically sends to the R10 receiving terminal with the forms of broadcasting.
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal among the BCCH, the described subframe identification information of carrying in the system information block (SIB) 2 of described transmitting terminal in described BCCH perhaps increases SIB newly to carry described subframe identification information in described BCCH.
Wherein, described transmitting terminal in described BCCH newly-increased SIB when carrying described subframe identification information, described transmitting terminal also is described newly-increased SIB config update announcement information, and whether this update notification information is used to notify the described subframe identification information of described R10 receiving terminal to upgrade.
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal in the described dedicated signaling, and the sending mode of described dedicated signaling adopts the broadcast mode of point to multiple spot.
Described transmitting terminal also is described dedicated signaling config update announcement information, whether this update notification information is used to notify the described dedicated signaling of described R10 receiving terminal to upgrade, wherein, described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described dedicated signaling in beep-page message or PDCCH.
Adopt technical solution of the present invention can effectively realize indicating the purpose of subframe, can satisfy the rapidity of indication information, and under the prerequisite of the complexity that does not increase receiving terminal, be fit to send indication information.
Description of drawings
Fig. 1 (a) is the structural representation of existing MBSFN subframe;
Fig. 1 (b) is the structural representation of existing Non-MBSFN subframe;
Fig. 2 (a) is the flow chart of embodiment 1;
Fig. 2 (b) is embodiment 1 figure;
Fig. 3 is the flow chart of embodiment 2;
Fig. 4 is the SIB transmission flow figure among the BCCH;
Fig. 5 is the update mechanism schematic diagram of the SIBnew of BCCH among the embodiment 2;
Fig. 6 is embodiment 3 flow charts.
Embodiment
Below in conjunction with drawings and the specific embodiments technical solution of the present invention is described in further detail.
A kind of transmission system of subframe identification information comprises transmitting terminal and R10 receiving terminal at least.
Transmitting terminal (base station, MCE or relay), the subframe identification information that sends the MBSFN subframe of PDSCH for the R10 receiving terminal that is mainly used in configured in advance sends to the R10 receiving terminal;
Wherein, transmitting terminal, the subframe identification information can be carried on and send to the R10 receiving terminal on the PDCCH, at this moment, the subframe identification information is carried on the default search space of PDCCH, the perhaps Catalog Search space of PDCCH, perhaps utilize default special-purpose RNTI to calculate the search space of subframe identification information carrying, particularly, can be by the reserved bit of DCI form among the PDCCH, perhaps added bits is with carrier frame identification information in arbitrary DCI form in PDCCH, and the RNTI that perhaps uses default special use is as the subframe identification information; After having determined the subframe identification information, can use the RNTI scrambling subframe identification information of default special use, sending by the subframe identification information after the RNTI scrambling of default special use then, thereby realized using the sign of described RNTI as the subframe identification information in PDCCH, receiving terminal is retrieved the subframe identification information by described sign in PDCCH;
Transmitting terminal can also be carried on the subframe identification information and send to the R10 receiving terminal on the BCCH, at this moment, can perhaps increase SIB newly with carrier frame identification information on BCCH in the SIB2 of BCCH; Particularly, when adopting the SIB2 carrier frame identification information on the BCCH, use existing update notification mechanism, and (existing update notification mechanism is seen LTE agreement 36.331_860 to use the existing update notification information of SIB2, update notification information is at PCH (Paging Channel, paging channel) carrying in, detailed in 36.331_860), wherein, more whether update notification information is to be used to notify the subframe identification information of this transmission of R10 receiving terminal and the subframe identification information of transmission last time to upgrade; If when on BCCH, increasing SIB newly with carrier frame identification information, can adopt existing update notification mechanism, and and the shared same update notification information of other existing SIB; Perhaps newly-increased SIB uses existing update mechanism, but and the not shared update notification information of other SIB, but oneself independently update notification information is arranged; Perhaps newly-increased SIB uses new update mechanism and update notification information, and new update mechanism is come the bearer update announcement information by PDCCH.
Transmitting terminal, the subframe identification information can also be carried on a little on the dedicated signaling of broadcast mode of multiple spot and send, at this moment, transmitting terminal also can be subframe identification information config update informing mechanism, the config update announcement information, the dedicated signaling employing cycle sends, perhaps adopt the mode of repetition period and the combination of modification cycle to send, wherein, when transmitting terminal adopts BCCH or dedicated signaling carrier frame identification information, subframe identification information function is so, describing those a little MBSFN subframes is subframes of transmitting PDSCH for the R10 receiving terminal, can be the information of describing a sub-frame configuration rule, for example subframe numbers can for example be that subframe numbers can be by 2 subframes that divide exactly in the one-period by 2 subframes that divide exactly; If the subframe identification information that the PDCCH by each subframe carries, this subframe identification information is whether only identify this subframe be MBSFN subframe for R10 receiving terminal transmission PDSCH so.
The R10 receiving terminal, be meant receiving terminal (as mobile phone terminal, notebook terminal or relay) according to the standard production of LTE-Advanced, by receiving above-mentioned subframe identification information, and, know that or which MBSFN subframe are R10 receiving terminal transmission PDSCH data according to the subframe identification information that is received;
Wherein, when transmitting terminal adopts PDCCH carrier frame identification information, when the R10 receiving terminal receives subframe so, if in the PDCCH of this subframe, received above-mentioned subframe identification information, represent that then current subframe is the MBSFN subframe for R10 receiving terminal transmission PDSCH, at this moment, the R10 receiving terminal continues to detect the schedule information (concrete detection method is with reference to LTE agreement 36.212 and 36.211) that the PDSCH that does not have this receiving terminal is arranged in the PDCCH of this subframe, if have, the R10 receiving terminal is resolved the schedule information of PDSCH, and,, then do not receive the data field of this subframe if there is not the schedule information of PDSCH according to the data field reception data of schedule information in this subframe;
When transmitting terminal adopts BCCH or dedicated signaling carrier frame identification information, when the R10 receiving terminal is received above-mentioned subframe identification information from BCCH or dedicated signaling, can know that those MBSFN subframes are R10 receiving terminal transmission PDSCH, after this class subframe on, the R10 receiving terminal detects the schedule information of the PDSCH whether oneself is arranged in the PDCCH of these subframes, if detect the schedule information of the PDSCH of oneself, then receive the data of resolving among the one's own PDSCH according to schedule information, otherwise, do not receive PDSCH;
The R10 receiving terminal is also wanted real-time Monitoring and Update announcement information, and when renewal has relatively taken place for update notification information notification subframe identification information that monitors and the subframe identification information that receives before, so, the R10 receiving terminal will receive the subframe identification information again.
The concrete application scenarios of following basis is introduced the process of subframe identification information that said system is transmitted as the MBSFN subframe of R10 receiving terminal transmission PDSCH.
Embodiment 1
Present embodiment is an example with the subframe identification information that PDCCH is carried as the MBSFN subframe of R10 receiving terminal transmission PDSCH, and the detailed process of transmission subframe identification information is described, this process may further comprise the steps shown in Fig. 2 (a):
Step 200: system configuration is the MBSFN subframe of R10 receiving terminal transmission PDSCH, and forms the subframe identification information in these subframes;
In this step, transmitting terminal will MBSFN subframe by MBSFN-SubframeConfigList configuration among the SIB2 in one or more MBSFN subframes that are configured to R10 receiving terminal transmission PDSCH, perhaps transmitting terminal is in order to improve the efficient of system, can be by the too much MBSFN subframe of MBSFN-SubframeConfigList configuration among the SIB2, further too much MBSFN subframe is designated as the MBSFN subframe of R10 receiving terminal transmission PDSCH again, can certainly comprise be the subframe of unicast sub before one or more, be configured to transmit the subframe of PDSCH afterwards again into the R10 receiving terminal;
Wherein, system comprises base station, MCE (Multi-cell/multicast Coordination Entity, many sub-districts coordination entity) and relay station (relay).
Step 210: transmitting terminal (for base station or relay station) will be above-mentioned be carried on (shown in Fig. 2 (b)) transmission on the PDCCH for the subframe identification information of the MBSFN subframe of R10 receiving terminal transmission PDSCH, wherein, the subframe identification information represents that promptly whether current subframe is the MBSFN subframe of R10 receiving terminal transmission PDSCH;
In this step, transmitting terminal is carried on the subframe identification information for sending among the PDCCH in the MBSFN subframe of R10 receiving terminal transmission PDSCH, wherein, transmitting terminal can be on PDCCH the search space of prior agreement in carrier frame identification information, for example, can on PDCCH, be numbered 17 to 24 the middle carrier frame identification information of 8 CCEs (Control Channel Element, control channel element); And for example, can be in the Catalog Search space of PDCCH carrier frame identification information because the Catalog Search space is the space of appointing among the PDCCH among the present LTE, be mainly used in the control information of carrying public information, like this, the receiving terminal retrieval rate is very fast; And for example, transmitting terminal can calculate the carrying position of subframe identification information in PDCCH (concrete computational methods can be carried definite mode of position with reference to the PDSCH schedule information of calculating a certain receiving terminal by C-RNTI among the LTE in PDCCH, agreement is 36.212 and 36.211) by the special-purpose RNTI of agreement.Wherein, transmitting terminal can be that transmitting terminal and receiving terminal are appointed in advance at the particular location of PDCCH transmission subframe identification information, also can be that receiving terminal is known by the special-purpose RNTI calculating of agreement;
Particularly, can utilize reservation bit (as the reserved bit among the existing format 1A) the expression subframe identification information of existing a certain DCI form among the PDCCH, perhaps in PDCCH, increase new indicating bit in the existing a certain DCI form and be used for carrier frame identification information, for example, can in existing format0, increase corresponding bit information, be used to indicate this MBSFN subframe whether to be the MBSFN subframe of R10 receiving terminal transmission PDSCH.
The step 220:R10 receiving terminal at first corresponding position on PDCCH receives detection subframe identification information, and according to the subframe identification information after resolving, carries out corresponding operating;
In this step, when the subframe identification information that the R10 receiving terminal is resolved represents that current subframe is not that the R10 receiving terminal no longer continues to detect the schedule information of PDSCH among the PDCCH, does not receive the data field of current subframe when transmitting the MBSFN subframe of PDSCH for the R10 receiving terminal; When the subframe identification information that the R10 receiving terminal is resolved represents that current subframe is the MBSFN subframe for R10 receiving terminal transmission PDSCH, then continuing to detect in the PDCCH of current subframe has the schedule information that does not have this receiving terminal PDSCH, if have, the R10 receiving terminal is resolved the schedule information of PDSCH, and according to the data field reception data of schedule information in this subframe, if there is not the schedule information of PDSCH, then do not receive the data field of this subframe;
Wherein, the subframe identification information of current subframe represents that this subframe is when transmitting the MBSFN subframe of PDSCH for R10, the R10 receiving terminal is handled identical with the data field processing of Non-MBSFN subframe in the LTE system to the data field of this subframe, control domain distributes 2 OFDM symbols at most, and processing uses 2 OFDM symbols identical with Non-MBSFN subframe control domain;
The R10 receiving terminal receives the position of subframe identification information, and is relevant with the mode that transmitting terminal uses, and for example, when transmitting terminal used Catalog Search space carrier frame identification information, the R10 receiving terminal then received the subframe identification information and gets final product in the Catalog Search space;
Wherein, the R10 receiving terminal is mobile phone terminal, notebook terminal or relay.
In other scenes, transmitting terminal is RNTI (the Radio Network Temporary Identifier of subframe identification information configure dedicated, Radio Network Temporary Identifier) time, whether this special-purpose RNTI is used for indicating this MBSFN subframe to receiving terminal is the MBSFN subframe of transmitting PDSCH for the R10 receiving terminal, particularly, when using special-purpose RNTI, can add CRC (Cyclic Redundancy Check for the subframe identification information, cyclic redundancy check (CRC)) check bit, use special-purpose RNTI scrambling CRC check bit then, again the gained data are carried out being carried among the PDCCH behind the modulating-coding, at this moment, transmitting terminal can be carried on the subframe identification information Catalog Search space of PDCCH, perhaps calculate the subframe identification information the search space original position of PDCCH (to calculate the computational methods of carrying the search space original position according to C-RNTI (Cell RNTI) identical for receiving terminal in concrete computational methods and the existing LTE system, can with reference to 36.212) according to the RNTI of special use.
Embodiment 2
Present embodiment is an example with the subframe identification information that BCCH is carried as the MBSFN subframe of R10 receiving terminal transmission PDSCH, and the detailed process of transmission subframe identification information is described, this process may further comprise the steps shown in Fig. 3 (a):
Step 300: system configuration forms the subframe identification information for the MBSFN subframe of R10 receiving terminal transmission PDSCH;
In this step, transmitting terminal will MBSFN subframe by MBSFN-SubframeConfigList configuration among the SIB2 in one or more MBSFN subframes that are configured to R10 receiving terminal transmission PDSCH, perhaps transmitting terminal is in order to improve the efficient of system, can be by the too much MBSFN subframe of MBSFN-SubframeConfigList configuration among the SIB2, further too much MBSFN subframe is designated as the MBSFN subframe of R10 receiving terminal transmission PDSCH again, can certainly comprise be the subframe of unicast sub before one or more, be configured to transmit the subframe of PDSCH afterwards again into the R10 receiving terminal;
Wherein, system refers to base station, MCE (Multi-cell/multicast Coordination Entity, many sub-districts coordination entity) or relay station (relay).
Step 310: transmitting terminal (base station or relay) is carried on BCCH with the subframe identification information of above-mentioned MBSFN subframe for R10 receiving terminal transmission PDSCH and goes up and send, wherein, the subframe identification information describes that or which MBSFN subframe is a MBSFN subframe of transmitting PDSCH for the R10 receiving terminal, can be the information of describing a sub-frame configuration rule, for example, the subframe identification information can be indicated and is the MBSFN subframe of R10 receiving terminal transmission PDSCH in certain one-period, perhaps can be designated as all MBSFN subframes of R10 receiving terminal transmission PDSCH;
In this step, can be on BCCH carrier frame identification information among the existing a certain SIB, owing to carried the configuration information of the MBSFN subframe of LTE R8/9 on the SIB2, if in LTE R10, continue to use the SIB2 among the R8/9 to be carried as the subframe identification information that R10 transmits the MBSFN subframe of PDSCH, then need not to increase new SIB, promptly can reduce SIB quantity, the scheduling of simplifying SIB sends, so SIB2 carrier frame identification information among the preferred BCCH in the present embodiment, at this moment, if transmit the subframe identification information of the MBSFN subframe of PDSCH upgrades for the R10 receiving terminal, the SIB2 that then carries this subframe identification information still upgrades according to existing update notification mechanism, and the update notification mechanism of existing SIB2 is with reference to LTE agreement 36.331.
Step 320:R10 receiving terminal receives the SIB of carrier frame identification information among the BCCH, knows that those MBSFN subframes are the subframes for R10 receiving terminal transmission PDSCH, and detects reception PDSCH data on these subframes;
In this step, after the R10 receiving terminal obtains the subframe identification information, know that promptly those MBSFN subframes are R10 receiving terminal transmission PDSCH, after this class subframe on, the R10 receiving terminal further detects among the PDCCH of this class subframe the schedule information that does not have this receiving terminal PDSCH, if have, the R10 receiving terminal is resolved the schedule information of PDSCH again, and according to the data field reception data of schedule information in this subframe, if there is not the schedule information of PDSCH, then do not receive the data field of this subframe, wherein, the R10 receiving terminal adopts corresponding mode to receive the SIB of carrier frame identification information according to the mode of transmitting terminal transmission subframe identification information, wherein, the R10 receiving terminal comprises mobile phone terminal, notebook terminal and relay.
In an embodiment, transmitting terminal can also adopt the SIB (hereinafter abbreviating SIBnew as) that increases newly to be carried as the subframe identification information of the MBSFN subframe of R10 receiving terminal transmission PDSCH, wherein, the scheduling of newly-increased SIBnew can be realized by SIB1, the schedule information that is SIBnew is carried among the SIB1 as the schedule information of other SIB (for example SIB2), should receive the SIBnew of carrier frame identification information for the R10 receiving terminal (UEs in RRC_CONNECTED or RRC_IDLE state) of connection status or idle condition, it only is the relevant information of LTER10 that this SIBnew can also be used for carrying LTE R10 system, promptly can be interpreted as SIBnew is become a system information block that is exclusively used in the distinctive information of carrying LTE R10 system, can accomplish that like this all R10 receiving terminals receive the relevant information that SIBnew obtains LTE R10 system, and the R8/R9 receiving terminal can not receive this SIBnew, thereby realizes the power saving of R8/R9 receiving terminal;
The update mechanism of this SIBnew then can adopt the update notification mechanism of the existing SIB of present LTE R8/9 (for example SIB2), with the shared same update notification information of existing other SIB, be that update notification information is the systemInfoModification parameter among the paging message (beep-page message), whether be used to refer to SIBnew and upgrade, concrete use can be with reference to the description among the LTE agreement 36.331_860.Scheduling about SIBnew sends, a certain (perhaps a plurality of) SIB scheduling that SIBnew and other R8/R9 receiving terminals can be able to be discerned is at same SI (System Information, system message) sends in the window, at this moment, all receiving terminals receive SIBnew and a certain (perhaps a plurality of) SIB simultaneously, like this, though can cause waste of energy for the R8/R9 receiving terminal that can not discern SIBnew, but R10 receiving terminal for ability with compatible R8/R9, then can all discern, and the transmitting terminal scheduling is simple; Transmitting terminal also can be with SIBnew and a certain (perhaps a plurality of) SIB (these SIB, the R8/R9 receiving terminal can be discerned) dispatch respectively in different SI windows and send, the R10 receiving terminal is received in respectively and receives the SIB that sends in two SI windows like this, because the R8/R9 receiving terminal can not be discerned SIBnew, receiving scheduling sends the interior SIBnew of SI window of SIBnew so the receiving terminal of R8/R9 can be selected not, thereby can help the power saving of R8/R9 receiving terminal;
When using existing update notification machine-processed, certainly SIBnew can also adopt other update notification information, for example, newly-increased update notification information in paging message, whether be used to indicate SIBnew to upgrade, original systemInfoModification sign position is invalid for SIBnew.When using newly-increased update notification information can use 1 bit to describe the more new situation of SIBnew, can represent that SIBnew upgrades when this bit is " 1 ", can represent that SIBnew does not upgrade when this bit is " 0 ";
And for example, for existing BCCH update notification mechanism, owing to comprise a lot of SIB among the BCCH, and the information updating of these SIB is comparatively slow, that is to say that the renewal that can cause SIBnew also is to become slower, whether as shown in Figure 4, so transmitting terminal can use new update notification mechanism, promptly notify the update notification information-bearing receiving terminal SIBnew to upgrade in PDCCH.Be specially the update notification information-bearing (for example is carried on PDCCH Catalog Search space on the position of PDCCH agreement, perhaps other configure dedicated search space in PDCCH), as shown in Figure 5, a certain moment subframe identification information upgrades in the BCCH modification cycle, renewal has taken place in the subframe identification information that transmitting terminal then sends on the PDCCH of subframe among the update notification information notice receiving terminal SIBnew, and transmitting terminal is dispatched the SIBnew that sends after upgrading immediately, after the R10 receiving terminal is received update notification information among the PDCCH that is carried on subframe, if update notification information notification receiving terminal SIBnew upgrades, then receiving terminal receives the SIBnew after the renewal immediately, when adopting this kind machine-processed, the R10 receiving terminal must be monitored the SIBnew update notification information among the PDCCH, after finding that update notification information indication SIBnew upgrades, to receive the SIBnew of renewal immediately, obtain new subframe identification information.
Embodiment 3
Present embodiment is an example with the subframe identification information that dedicated signaling is carried as the MBSFN subframe of R10 receiving terminal transmission PDSCH, and the detailed process of transmission subframe identification information is described, this process may further comprise the steps as shown in Figure 6:
Step 600: system configuration forms the subframe identification information for the MBSFN subframe of R10 receiving terminal transmission PDSCH;
In this step, transmitting terminal will MBSFN subframe by MBSFN-SubframeConfigList configuration among the SIB2 in one or more MBSFN subframes that are configured to R10 receiving terminal transmission PDSCH, perhaps transmitting terminal is in order to improve the efficient of system, can be by the too much MBSFN subframe of MBSFN-SubframeConfigList configuration among the SIB2, further too much MBSFN subframe is designated as the MBSFN subframe of R10 receiving terminal transmission PDSCH again, can certainly comprise be the subframe of unicast sub before one or more, be configured to transmit the subframe of PDSCH afterwards again into the R10 receiving terminal;
Wherein, system refers to base station, MCE (Multi-cell/multicast Coordination Entity, many sub-districts coordination entity) or relay station (relay).
Step 610: transmitting terminal (base station or relay station) is carried on the subframe identification information of above-mentioned MBSFN subframe for R10 receiving terminal transmission PDSCH in the dedicated signaling and sends, wherein, the subframe identification information describes that or which MBSFN subframe is a subframe of transmitting PDSCH for the R10 receiving terminal, can be the information of describing a sub-frame configuration rule;
In this step, in the LTE-Advanced system, increase a dedicated signaling that sends with the broadcast mode of putting multiple spot at the R10 receiving terminal, in this dedicated signaling, be carried as the subframe identification information of the MBSFN subframe of R10 receiving terminal transmission PDSCH, and this dedicated signaling can also carry other information that R10 receiving terminal colony sends that aim at;
Wherein, the dedicated signaling transmit mechanism can be in the following way,
First kind is that the configure dedicated signaling is revised cycle and dedicated signaling repetition period, each modification cycle comprises several repetition periods, each modification cycle is when arriving, the information (comprising the subframe identification information) that allows to be carried in the dedicated signaling is upgraded, and loaded information (comprising the subframe identification information) keeps identical in the dedicated signaling in the repetition period in each modification cycle;
Second kind is that dedicated signaling only periodically sends, and promptly the information (comprising the subframe identification information) that all allows to be carried in the dedicated signaling is upgraded each cycle;
Whether dedicated signaling adopts update notification mechanism is that optionally the update notification mechanism of suggestion is as follows:
If the loaded information data volume is bigger in the dedicated signaling, and when changing slowly, in a preferred embodiment, can also receive the number of times of dedicated signaling for dedicated signaling config update informing mechanism with minimizing R10 receiving terminal, reach the power saving effect, when adopting above-mentioned first kind of transmit mechanism to send dedicated signaling, can further notify the content of the receiving terminal dedicated signaling modification cycle next on the horizon dedicated signaling that the place sends and the content of the dedicated signaling of last time whether to upgrade (comprising whether the subframe identification information upgrades), each dedicated signaling cycle of revising sends update notification information at least one time; When adopting above-mentioned second kind of transmit mechanism to send dedicated signaling, can further notify the dedicated signaling content of receiving terminal dedicated signaling cycle on the horizon place's transmission and the content of the dedicated signaling of last time whether to upgrade, particularly, can be by in paging message, increasing a update notification information, this update notification information uses 1 bit as the sign position, when this set, expression dedicated signaling content is upgraded, during this home position " 0 ", represent that then the dedicated signaling content do not upgrade.Each dedicated signaling sends update notification information at least one time in the cycle.
Step 620:R10 receiving terminal receives above-mentioned dedicated signaling, resolves this dedicated signaling, obtaining subframe identification information wherein, thereby knows the MBSFN subframe of those subframes for R10 receiving terminal transmission PDSCH, and detects on these subframes and receive the PDSCH data;
In this step, if transmitting terminal is for having adopted above-mentioned first kind of transmit mechanism, then receiving terminal only need get final product by the reception dedicated signaling when each dedicated signaling modification cycle, the place arrived, whether receive the dedicated signaling that the repetition period sends in the modification cycle, can be by receiving terminal oneself decision (promptly can receive also and can not receive) if receive, 2 repetition periods send same dedicated signaling and realize soft merging decoding before and after can using, and improve the receiving terminal performance;
If transmitting terminal adopts above-mentioned second kind of transmit mechanism to send dedicated signaling, then receiving terminal all needs to receive dedicated signaling one time in each cycle.
The R10 receiving terminal receives and resolves subframe identification information wherein, thereby know that those MBSFN subframes are R10 receiving terminal transmission PDSCH, after this class subframe on, the R10 receiving terminal need detect the schedule information (method of detection is identical with the detection of R8/R9 receiving terminal, and concrete detection method is with reference to LTE agreement 36.212 and 36.211) of the PDSCH whether oneself is arranged in the PDCCH of these subframes.If what detect oneself is the schedule information of PDSCH, receiving terminal then receives the data of resolving among the one's own PDSCH according to schedule information so.Otherwise, do not receive PDSCH.
If transmitting terminal has adopted update notification mechanism, when transmitting terminal adopts above-mentioned first kind of transmit mechanism to send dedicated signaling, receiving terminal is after having received dedicated signaling for the first time, only needing to keep monitoring update notification information gets final product, if update notification information notification receiving terminal dedicated signaling upgrades, just arrive the new dedicated signaling of modification cycle place's reception; When transmitting terminal adopts above-mentioned second kind of transmit mechanism to send dedicated signaling, after receiving terminal receives dedicated signaling for the first time, monitor update notification information always, if update notification information notification receiving terminal dedicated signaling upgrades, receiving terminal just receives new dedicated signaling when next cycle arrives so.
In the LTE-Advanced system, also introduced the multipoint cooperative transmission (Coordinated multiple point transmition and reception, COMP).The foregoing description all can be applicable to the transmission of the configuration indication information of COMP subframe, be that those subframes are the subframe identification informations that are used for carrying out the COMP transmission, after receiving terminal is received this information, can know which subframe is used for the COMP transmission, receive so that carry out the receiving terminal of COMP transmission.The subframe that promptly is used for the COMP transmission sends to receiving terminal by system information, perhaps sends by dedicated signaling, perhaps sends in PDCCH.
From the foregoing description as can be seen, technical solution of the present invention indicates the subframe which MBSFN subframe is configured to transmit into the R10 receiving terminal PDSCH, like this for the R10 receiving terminal, after it finds subframe configuration information, the unicast data of attempting reception oneself on this subframe gets final product, promptly directly skip the MBSFN subframe that is not used in the R10 receiving terminal, thus can power saving.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (27)
1. the transmission method of a subframe identification information is characterized in that, this method comprises:
Transmitting terminal sends the subframe identification information to the R10 receiving terminal in the Physical Downlink Control Channel (PDCCH) of Multicast Broadcast Single Frequency Network (MBSFN) subframe that is configured to R10 receiving terminal transmitting physical DSCH Downlink Shared Channel (PDSCH), wherein, to be used to indicate described MBSFN subframe be multicast MBSFN subframe for R10 receiving terminal transmission PDSCH to described subframe identification information.
2. the method for claim 1 is characterized in that,
Described R10 receiving terminal detects described subframe identification information on the PDCCH of each subframe, when described R10 receiving terminal detects described subframe identification information, on this subframe, detect the schedule information of the PDSCH of oneself again, receive the PDSCH data according to the PDSCH schedule information then.
3. method as claimed in claim 1 or 2 is characterized in that,
Described transmitting terminal is carried on the default search space of PDCCH with described subframe identification information, and the perhaps Catalog Search space of PDCCH is perhaps in the search space that is calculated by default ad Hoc wireless network temporary mark (RNTI).
4. method as claimed in claim 3 is characterized in that,
Described transmitting terminal is carried on the default search space of described PDCCH with described subframe identification information, perhaps during the Catalog Search space of described PDCCH:
The middle reserved bit of described transmitting terminal by a certain descending control information format of arranging among the described PDCCH be as described subframe identification information, perhaps by added bits in a certain DCI form of arranging among the described PDCCH as described subframe identification information.
5. the transmission method of a subframe identification information is characterized in that, this method comprises:
The subframe identification information that transmitting terminal will be configured to Multicast Broadcast Single Frequency Network (MBSFN) subframe of R10 receiving terminal transmission Physical Downlink Shared Channel (PDSCH) sends to the R10 receiving terminal with the forms of broadcasting.
6. method as claimed in claim 5 is characterized in that,
Described subframe identification information is used to indicate the MBSFN subframe that sends PDSCH in a certain cycle for the R10 receiving terminal, perhaps is used in reference to be shown all MBSFN subframes that the R10 receiving terminal sends PDSCH.
7. as claim 5 or 6 described methods, it is characterized in that,
Described R10 receiving terminal receives described subframe identification information, and detects reception PDSCH data on the MBSFN subframe that sends PDSCH for the R10 receiving terminal of described subframe identification information indication.
8. as claim 5 or 6 described methods, it is characterized in that,
Described transmitting terminal is carried on described subframe identification information in Broadcast Control Channel (BCCH) or the dedicated signaling and periodically sends to the R10 receiving terminal with the forms of broadcasting.
9. method as claimed in claim 8 is characterized in that,
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal among the BCCH, the described subframe identification information of carrying in the system information block (SIB) 2 of described transmitting terminal in described BCCH perhaps increases SIB newly to carry described subframe identification information in described BCCH.
10. method as claimed in claim 9 is characterized in that,
Described transmitting terminal in described BCCH newly-increased SIB when carrying described subframe identification information, described transmitting terminal also is described newly-increased SIB config update announcement information, and whether this update notification information is used to notify the described subframe identification information of described R10 receiving terminal to upgrade.
11. method as claimed in claim 10 is characterized in that,
The shared same update notification information of the update notification information of other SIB among the update notification information of described newly-increased SIB and the BCCH perhaps is the update notification information of the update notification information that is different from other SIB among the BCCH of the update notification information setting special use of described newly-increased SIB.
12. as claim 10 or 11 described methods, it is characterized in that,
Described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described newly-increased SIB on beep-page message.
13. as claim 10 or 11 described methods, it is characterized in that,
Described transmitting terminal is carried on the schedule information of described newly-increased SIB and sends to described R10 receiving terminal among the SIB1.
14. as claim 10 or 11 described methods, it is characterized in that,
Described transmitting terminal sends described update notification information-bearing on the position of PDCCH agreement.
15. method as claimed in claim 7 is characterized in that,
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal in the described dedicated signaling, and the sending mode of described dedicated signaling adopts the broadcast mode of point to multiple spot.
16. method as claimed in claim 15 is characterized in that,
Described transmitting terminal also is described dedicated signaling config update announcement information, whether this update notification information is used to notify the described dedicated signaling of described R10 receiving terminal to upgrade, wherein, described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described dedicated signaling in beep-page message or PDCCH.
17. method as claimed in claim 16 is characterized in that,
Described transmitting terminal is that described dedicated signaling configure dedicated signaling is revised the cycle, and sends described update notification information in the described dedicated signaling modification cycle; Perhaps
Described transmitting terminal only periodically sends described dedicated signaling, and sends described update notification information in each cycle that sends described dedicated signaling.
18. the transmission system of a subframe identification information is characterized in that, this system comprises transmitting terminal and R10 receiving terminal, wherein:
Described transmitting terminal, in the Physical Downlink Control Channel (PDCCH) of Multicast Broadcast Single Frequency Network (MBSFN) subframe that is configured to R10 receiving terminal transmitting physical DSCH Downlink Shared Channel (PDSCH), send the subframe identification information to the R10 receiving terminal, wherein, to be used to indicate described MBSFN subframe be multicast MBSFN subframe for R10 receiving terminal transmission PDSCH to described subframe identification information;
Described R10 receiving terminal, on the PDCCH of each subframe, detect described subframe identification information, when described R10 receiving terminal detects described subframe identification information, on this subframe, detect the schedule information of own PDSCH again, then according to PDSCH schedule information reception PDSCH data.
19. system as claimed in claim 18 is characterized in that,
Described transmitting terminal is carried on the default search space of PDCCH with described subframe identification information, and the perhaps Catalog Search space of PDCCH is perhaps in the search space that is calculated by default ad Hoc wireless network temporary mark (RNTI).
20. system as claimed in claim 18 is characterized in that,
Described transmitting terminal is carried on the default search space of described PDCCH with described subframe identification information, perhaps during the Catalog Search space of described PDCCH:
The middle reserved bit of described transmitting terminal by a certain descending control information format of arranging among the described PDCCH be as described subframe identification information, perhaps by added bits in a certain DCI form of arranging among the described PDCCH as described subframe identification information.
21. system as claimed in claim 18 is characterized in that,
Described transmitting terminal, the subframe identification information that also is used for being configured to Multicast Broadcast Single Frequency Network (MBSFN) subframe of R10 receiving terminal transmission Physical Downlink Shared Channel (PDSCH) sends to the R10 receiving terminal with the forms of broadcasting;
Described R10 receiving terminal also is used to receive described subframe identification information, and detects reception PDSCH data on the MBSFN subframe that sends PDSCH for the R10 receiving terminal of described subframe identification information indication.
22. system as claimed in claim 21 is characterized in that,
Described subframe identification information is used to indicate the MBSFN subframe that sends PDSCH in a certain cycle for the R10 receiving terminal, perhaps is used in reference to be shown all MBSFN subframes that the R10 receiving terminal sends PDSCH.
23. as claim 21 or 22 described systems, it is characterized in that,
Described transmitting terminal is carried on described subframe identification information in Broadcast Control Channel (BCCH) or the dedicated signaling and periodically sends to the R10 receiving terminal with the forms of broadcasting.
24. system as claimed in claim 23 is characterized in that,
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal among the BCCH, the described subframe identification information of carrying in the system information block (SIB) 2 of described transmitting terminal in described BCCH perhaps increases SIB newly to carry described subframe identification information in described BCCH.
25. system as claimed in claim 24 is characterized in that,
Described transmitting terminal in described BCCH newly-increased SIB when carrying described subframe identification information, described transmitting terminal also is described newly-increased SIB config update announcement information, and whether this update notification information is used to notify the described subframe identification information of described R10 receiving terminal to upgrade.
26. system as claimed in claim 23 is characterized in that,
Described transmitting terminal is carried on described subframe identification information when sending to described R10 receiving terminal in the described dedicated signaling, and the sending mode of described dedicated signaling adopts the broadcast mode of point to multiple spot.
27. system as claimed in claim 26 is characterized in that,
Described transmitting terminal also is described dedicated signaling config update announcement information, whether this update notification information is used to notify the described dedicated signaling of described R10 receiving terminal to upgrade, wherein, described transmitting terminal sends to described R10 receiving terminal with the update notification information-bearing of described dedicated signaling in beep-page message or PDCCH.
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| CN200910174596.6A CN102036171B (en) | 2009-09-30 | 2009-09-30 | Transmission method and system for subframe identification information |
| PCT/CN2010/077056 WO2011038644A1 (en) | 2009-09-30 | 2010-09-17 | Method and system for transmitting subframe identifier information |
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| CN200910174596.6A CN102036171B (en) | 2009-09-30 | 2009-09-30 | Transmission method and system for subframe identification information |
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| CN103201972A (en) * | 2010-11-08 | 2013-07-10 | 三星电子株式会社 | Method and device for receiving a subframe in different forms in a wireless communication system |
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| CN101309523B (en) * | 2008-06-23 | 2014-09-10 | 中兴通讯股份有限公司 | Method for transmitting physical downlink channel control signal |
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Also Published As
| Publication number | Publication date |
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| CN102036171B (en) | 2015-07-22 |
| WO2011038644A1 (en) | 2011-04-07 |
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