CN101964946B - Service data receiving method and system - Google Patents
Service data receiving method and system Download PDFInfo
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- CN101964946B CN101964946B CN200910157636.6A CN200910157636A CN101964946B CN 101964946 B CN101964946 B CN 101964946B CN 200910157636 A CN200910157636 A CN 200910157636A CN 101964946 B CN101964946 B CN 101964946B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
Abstract
The invention discloses a service data receiving method and a service data receiving system. The method comprises the following steps of: determining resource occupation information of control information in a sub-frame to be received by using a receiving end; determining the resource occupation information of service data in the sub-frame according to the resource occupation information of the control information; and receiving and analyzing the service data. By adopting a service receiving method and a service receiving system provided by the invention, the service data of a multimedia broadcast multicast service (MBMS) in a current long term evolution (LTE) R9 system can be received effectively without trying to analyze the service data blindly by using the receiving end or modifying a conventional transmitting end protocol.
Description
Technical field
The present invention relates to LTE (Long Term Evolution, Long Term Evolution) systems technology field, in particular to method of reseptance and the system of a kind of multimedia broadcast multicast services (Multimedia Broadcast Multicast Service is called for short MBMS) business datum.
Background technology
Along with the fast development of Internet (internet) and the universal of large-screen multi-functional mobile phone, a large amount of Mobile data multimedia service and various high bandwidth multimedia service are there is, such as, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., also for mobile operator brings new business growth point while meeting the business demand that mobile subscriber constantly upgrades.The multiple user of these Mobile data multimedia service requirements can receive identical data simultaneously, compared with general data service, has the features such as data volume is large, duration length, delay sensitive.
In order to effectively utilize mobile network resource, third generation partner program (3rd GenerationPartnership Project, referred to as 3GPP) propose MBMS, this business is a kind of technology transmitting data from a data source to multiple target, achieve sharing of network (comprising core net and Access Network) resource, improve the utilance of Internet resources (especially air interface resource).The MBMS of 3GPP definition can not only realize classes of messages broadcast and the multicast of plain text low rate, but also broadcast and the multicast of high-speed multimedia service can be realized, multiple abundant 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 (3rd Generation, G mobile communication) provides better business prospect.
At present, in LTE, MBMS can adopt mixed carrier mode to send, and mixed carrier mode refers to that unicast service (Unicast) and multicast service (MBMS) send in a time multiplexed manner on same carrier wave, and time-multiplexed least unit is subframe.In LTE, by SIB2 (SystemInformation Block, system information block) in about MBSFN (Multimedia Broadcastmulticast service Single Frequency Network, multicast single frequency network) subframe of information configuration of-SubframeConfiguration is called as MBSFN sub-frame, the Main Function of MBSFN sub-frame is used to MBMS transmission business, but not every MBSFN sub-frame is all used for bearing MBMS service.The feature of the MBSFN sub-frame so far in LTE R9 is, use extended cyclic prefix (Extended cyclic prefix), 1 or 2 OFDM (Orthogonal Frequency Division Multiplexing wherein, OFDM) symbol is for carrying the control information of unicast service, namely as PDCCH (Physical Downlink Control CHannel, Physical Downlink Control Channel), serve for the receiving terminal for unicast service, it doesn't matter with MBMS, therefore the receiving terminal receiving MBMS does not need to receive.Likely the OFDM symbol number that the PDCCH in MBSFN sub-frame takies is increased later.For the MBSFN sub-frame for sending MBMS, outside the OFDM symbol resource that removing PDCCH takies, remaining OFDM symbol resource is used for transferring MBMS service data.Due to not unicast traffic data in residue OFDM symbol, but send MBMS data, so after unicast reception end have received the PDCCH of this MBSFN sub-frame, no longer receive the data in OFDM symbol below; And MBMS receiving terminal does not receive the PDCCH in OFDM symbol above, directly receive MBMS data in OFDM symbol below.
There are the following problems in the reception of the MBMS data in current LTE R9 system: because receiving terminal can not determine the resource situation that business datum to be received takies, can blindly attempt resolving business datum when reception, easily because decoding error causes the business datum of reception invalid.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method of reseptance and system of business datum, enables receiving terminal receive receiving the resource situation that takies of business datum business datum according to what determine and to resolve.
In order to solve the problem, the invention provides a kind of method of reseptance of business datum, comprising:
Receiving terminal determines the resource occupation information of control information in subframe to be received;
The resource occupation information of business datum in described subframe is determined according to the resource occupation information of described control information;
Receive and resolve described business datum.
Further, described control information is physical downlink control channel PDCCH, and the resource occupation information of described control information refers to the orthogonal frequency division multiplex OFDM symbolic number taking described subframe.
Further, the resource occupation information of described business datum refer to take described subframe OFDM symbol number or OFDM symbol in part resource.
Further, described receiving terminal determines the resource occupation information of control information in subframe to be received in the following way:
Receive and resolve the information on the Physical Control Format Indicator Channel PCFICH in first OFDM symbol of each described subframe, to determine the OFDM symbol number that described PDCCH takies.
Further, described receiving terminal determines the resource occupation information of control information in subframe to be received in the following way:
The information of the OFDM symbol number taken by the described PDCCH of instruction comprised in the high-level signaling that receives, to determine the OFDM symbol number that described PDCCH takies.
Further, described high-level signaling comprises the dynamic scheduling information of multimedia broadcast multicast services MBMS, multicast control channel MCCH information or BCCH channel of broadcast control information.
Further, the described resource occupation information according to described control information determines that the step of the resource occupation information of business datum in described subframe comprises further:
Judge whether there is important system message in described subframe, if do not had, then total OFDM symbol number of described subframe is deducted the OFDM symbol number that described PDCCH takies, namely obtain the OFDM symbol number that described business datum takies; If had, after then total OFDM symbol number of described subframe being deducted the OFDM symbol number that described PDCCH takies, deduct the resource in the OFDM symbol number that described important system message takies or the OFDM symbol taken again, obtain the resource occupation information of described business datum.
Further, described subframe comprises non-multicast multicast single-frequency network network MBSFN sub-frame, or for the MBSFN sub-frame of bearing MBMS service.
Further, described business datum comprises: MBMS data or positioning service data.
Present invention also offers a kind of receiving system of business datum, comprise resource occupation information unit and receiving element, wherein:
Described resource occupation information unit is used for, determine the resource occupation information of control information in subframe to be received, and calculate the resource occupation information of business datum in described subframe according to the resource occupation information of described control information after, the resource occupation information of described business datum is sent to described receiving element;
Described receiving element is used for, and receives and resolves described business datum.
Further, described control information is PDCCH, and the resource occupation information of described control information refers to the OFDM symbol number taking described subframe; The resource occupation information of described business datum refer to take described subframe OFDM symbol number or OFDM symbol in part resource;
Described resource occupation information unit determines the OFDM symbol number that described PDCCH takies in the following way:
Receive and resolve the information on the PCFICH in first OFDM symbol of each described subframe; Or the information of the OFDM symbol number taken by the described PDCCH of instruction comprised in the high-level signaling that receives, to determine the OFDM symbol number that described PDCCH takies.
Further, described resource occupation information unit determines that according to the resource occupation information of described control information the step of the resource occupation information of business datum in described subframe comprises further:
Judge whether there is important system message in described subframe, if do not had, then total OFDM symbol number of described subframe is deducted the OFDM symbol number that described PDCCH takies, namely obtain the OFDM symbol number that described business datum takies; If had, after then total OFDM symbol number of described subframe being deducted the OFDM symbol number that described PDCCH takies, deduct the resource in the OFDM symbol number that described important system message takies or the OFDM symbol taken again, obtain the resource occupation information of described business datum.
Further, described subframe comprises non-MBSFN sub-frame, or for the MBSFN sub-frame of bearing MBMS service.
Further, described business datum comprises: MBMS data or positioning service data.
Adopt the present invention can realize effective reception of the MBMS data in current LTE R9 system, do not need receiving terminal blindly to attempt resolving business datum, and do not need to modify to existing transmitting terminal agreement.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the business datum method of reseptance of the embodiment of the present invention;
Fig. 2 is the composition schematic diagram of the business datum receiving system of the embodiment of the present invention.
Embodiment
Core concept of the present invention is: in LTE system, first receiving terminal determines the occupation condition for control information in subframe to be received, after occupation condition again according to business datum in the occupation condition determination subframe of control information, business datum is received and resolves.
As shown in Figure 1, the present invention specifically adopts following technical scheme:
A) receiving terminal determines the occupation condition for control information in subframe to be received, is specially, and determines the OFDM symbol number for control information (i.e. PDCCH) in subframe to be received;
PCFICH (Physical Control Format Indicator CHannel in subframe, Physical Control Format Indicator Channel) information on channel is used to indicate the OFDM symbol number that PDCCH takies, receiving terminal, by receiving and resolving the information of PCFICH channel, namely can determine the OFDM symbol number of PDCCH.But receiving terminal does not receive the control information itself of resolving in PDCCH, receives only the information of PCFICH channel and resolves.
In addition, the information of the OFDM symbol number that PDCCH in the MBSFN sub-frame of receiving terminal bearing MBMS service of (as 320ms) in some cycles can also be indicated to take by high-level signaling, such as, by the dynamic scheduling information (Dynamic Scheduling Information) of MBMS, MCCH (Multicast Control Channel, multicast control channel) information or BCCH (BroadcastControl Channel, Broadcast Control Channel) information contour level signaling, the symbolic number of the OFDM that the MBSFN sub-frame PDCCH of bearing MBMS service takies in some cycles can be known after then receiving terminal receives high-level signaling.
B) determine the occupation condition of business datum in subframe to be received, be specially, the OFDM symbol number that the OFDM symbol number determination business datum taken according to PDCCH in the subframe of bearing MBMS service takies;
Remove the OFDM symbol for sending PDCCH in the OFDM symbol that subframe to be received is total after, if part resource carries important system message in remaining OFDM symbol, such as when BCCH information, pilot tone, then remove the resource that this part message takies again, remaining resource is the resource for service data transmission; If remaining OFDM symbol does not have above-mentioned BCCH system message, pilot tone in subframe, then in subframe, remaining OFDM symbol is all the resource for service data transmission;
C) receive and resolve business datum, being specially, after the resource of bearer service data receives business datum, to operations such as the decoding datas received, to obtain effective business datum.
Wherein, described business datum comprises MBMS data, positioning service (Positioning) data.
Below in conjunction with drawings and the specific embodiments, technical solution of the present invention is described in further detail.
In order to coordinate embodiment, we suppose the technology of some necessity, explain the concept of some necessity, and the summary of the invention being convenient to us like this describes, and hypothesis is below a kind of concrete situation, do not get rid of the situation that other and hypothesis are similar.
The OFDM symbol of a subframe in LTE is limited, and total OFDM symbol number of the subframe of same type is fixing.There are 12 OFDM symbol when using extended cyclic prefix in subframe, have 14 OFDM symbol when using standard cyclic prefix in subframe.Receiving terminal can obtain the Cyclic Prefix situation of this subframe use by relevant information, therefore receiving terminal can learn the OFDM symbol number altogether of each subframe.
In LTE system, first OFDM symbol of each subframe carries PCFICH channel, the information of this PCFICH channel is used to indicate OFDM symbol number that PDCCH takies, the PCFICH channel of each community is positioned at the fixed position in first OFDM symbol, this fixed position and community ID (mark) have relation, variant because community ID is different.In a word, terminal is the positional information can knowing PCFICH channel in each subframe.
Embodiment one
When present embodiment describes the OFDM symbol number when using PCFICH carrying PDCCH to take, how receiving terminal receives the process of MBMS data in the data field of subframe.
According to prior art, in LTE R9, in the MBSFN subframe, current agreement specifies that before each MBSFN sub-frame 1 or 2 OFDM symbol numbers are that PDCCH uses, so that the normal transmission of unicast service to MBMS carried.Like this, before the MBSFN sub-frame of a bearing MBMS service, maximum 2 OFDM symbol send PDCCH, but not unicast traffic data in residue OFDM symbol below, but send MBMS data.
In the present embodiment, suppose that receiving terminal has determined a certain MBMS needing to receive, and determined a series of MBSFN sub-frame at this MBMS place further, then to receive the process of this MBMS data as follows for receiving terminal:
1, receiving terminal determines the OFDM symbol number for PDCCH in MBSFN sub-frame to be received;
Receiving terminal can adopt following methods to determine the OFDM symbol number that PDCCH takies: receiving terminal receives the information of the PCFICH channel in first OFDM symbol of each MBSFN sub-frame to be received, resolve wherein information, thus know the OFDM symbol number that in this subframe, PDCCH takies.
Wherein, receiving terminal, while parsing PCFICH, is continuing to receive OFDM symbol data below, because if receiving terminal does not receive follow-up OFDM symbol in resolving always, then need time delay owing to resolving PCFICH, OFDM symbol loss of data below can be caused.
In addition, by high-level signaling, the present invention can also notify that receiving terminal determines the OFDM symbol that in MBSFN sub-frame to be received, PDCCH takies.Therefore, in other embodiments of the present invention, receiving terminal can also determine according to the high-level signaling received the OFDM symbol number that PDCCH takies, thus indirectly can know the OFDM symbol number for MBMS in subframe, and the OFDM symbol number that in this subframe, PDCCH takies need not be determined in each MBSFN sub-frame received.
Suppose in the present embodiment that PDCCH takies 1 OFDM symbol in the burst.When PDCCH takies an OFDM symbol, in order to utilize resource further, the 2nd OFDM symbol can be used for send MBMS.
2, receiving terminal determines the symbolic number that in MBMS subframe to be received, business datum takies;
Receiving terminal, according to the regulation of agreement, is known that MBSFN sub-frame uses extended cyclic prefix, is therefore had 12 OFDM symbol.Because MBMS data is not used in carrying BCCH, therefore in the present embodiment, without the need to considering whether there is important system message, like this, remove outside first OFDM symbol, this subframe 11 OFDM symbol resources below all for carrying the MBMS data that receiving terminal is about to receive, if having carrying pilot tone in 11 symbols below, then do not comprise the resource that pilot tone takies.
3, receiving terminal continues to receive the data in all OFDM symbol in this subframe, finally resolves the MBMS data received according to the related control information of MBMS, comprises channel estimating, decoding etc., the effective MBMS data of final acquisition.
Embodiment two
When present embodiment describes the OFDM symbol number when using PCFICH carrying PDCCH to take, how receiving terminal receives the process of positioning service data in the data field of subframe.
According to prior art, in LTE R9, positioning service uses the data field of whole subframe to carry, and in the control domain of this subframe, does not send relevant control information.Therefore, the control domain of subframe employs the control domain (PDCCH) that several OFDM symbol is subframe on earth, must know, because this directly has influence on the OFDM symbol number that subsequent data territory takies for the receiving terminal receiving positioning service.
The PDCCH that PCFICH is used to indicate subframe takies several OFDM symbol, also indirectly informs this sub-frame data territory from which OFDM symbol.
In the present embodiment, supposing that receiving terminal has determined needs to receive positioning service data in a certain subframe (non-MBSFN sub-frame), and has known it has been which subframe, then the process of receiving terminal reception positioning service data is as follows:
1, receiving terminal determines the OFDM symbol number for PDCCH in subframe to be received;
Receiving terminal receives the information of the PCFICH channel in the 1st OFDM symbol of subframe, resolves wherein information, thus knows the OFDM symbol number that in this subframe, PDCCH takies.
Wherein, receiving terminal, while parsing PCFICH, is continuing the data receiving OFDM symbol below always.
Suppose in the present embodiment that PDCCH takies 1 OFDM symbol in the burst.
2, receiving terminal determines the symbolic number that subframe inner position business datum to be received takies;
Receiving terminal deducts PDCCH by the OFDM symbol number that subframe is total and takies OFDM symbol number, and remaining OFDM is the OFDM symbol that positioning service data takies.In the OFDM symbol of these carrying positioning services, if there is important system message, such as BCCH, pilot tone, then also will remove this part part resource taken; If there is no important system message in the OFDM symbol of these carrying positioning services, then need not remove this part resource.
3, receiving terminal continues to receive the data in all OFDM symbol in this subframe, finally according to the related control information of positioning service data, the positioning service data received is resolved, comprise channel estimating, decoding etc., the effective positioning service data of final acquisition.
As shown in Figure 2, the receiving system of the business datum that the embodiment of the present invention provides, comprises resource occupation information unit and receiving element, wherein:
Resource occupation information unit is used for, determine the resource occupation information of control information in subframe to be received, and according to the resource occupation information of business datum in the resource occupation information determination subframe of control information, and the resource occupation information of described business datum is sent to receiving element;
Receiving element is used for, and receives and resolves business datum.
Further, above-mentioned control information refers to PDCCH, and resource occupation information refers to the orthogonal frequency division multiplex OFDM symbolic number taking described subframe, and resource occupation information unit determines the resource occupation information of business datum in the following way:
Receive and resolve the information on the PCFICH in first OFDM symbol of each subframe; Or the information of the OFDM symbol number taken by the described PDCCH of instruction comprised in the high-level signaling that receives, to determine the OFDM symbol number that PDCCH takies;
Judge whether have important system message, pilot tone in this subframe again, if do not had, then total OFDM symbol number of this subframe is deducted the OFDM symbol number that PDCCH takies, namely obtain the OFDM symbol number that business datum takies; If had, then after total OFDM symbol number of this subframe being deducted the OFDM symbol number that PDCCH takies, then deduct this important system message, resource that pilot tone takies in OFDM symbol, namely obtain the resource that described business datum takies.
This receiving system can be applicable to the receiving terminal etc. of MBMS.
Certainly, the present invention also can have other various embodiments, such as, described subframe is except MBSFN sub-frame, also other non-MBSFN sub-frame can be comprised, the PCFICH of multicast service subframe is present in subframe in first OFDM symbol, and total OFDM symbol number of multicast service subframe is also relatively-stationary, is 12 or 14.In the present invention, citing is applied to MBMS and positioning service, but is not limited to this two classes business.Therefore, flow process of the present invention is applicable equally.When not deviating from the present invention's spirit and essence thereof, those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (8)
1. a method of reseptance for business datum, is characterized in that, comprising:
When receiving terminal receives MBMS data, determine the resource occupation information of the control information of unicast service in subframe to be received;
The resource occupation information of described subframe inner multimedia broadcast multicast services MBMS data is determined according to the resource occupation information of described control information;
Receive and resolve described MBMS data;
Wherein, the control information of described unicast service is physical downlink control channel PDCCH, and the resource occupation information of the control information of described unicast service refers to the orthogonal frequency division multiplex OFDM symbolic number taking described subframe; Described receiving terminal determines the resource occupation information of the control information of unicast service in subframe to be received in the following way:
The information of the OFDM symbol number taken by the described PDCCH of instruction comprised in the high-level signaling that receives, to determine the OFDM symbol number that described PDCCH takies.
2. the method for claim 1, is characterized in that, the resource occupation information of described MBMS data refer to take described subframe OFDM symbol number or OFDM symbol in part resource.
3. the method for claim 1, is characterized in that,
Described high-level signaling comprises the dynamic scheduling information of multimedia broadcast multicast services MBMS, multicast control channel MCCH information or BCCH channel of broadcast control information.
4. the method for claim 1, is characterized in that,
The resource occupation information of the described control information according to described unicast service determines that the step of the resource occupation information of MBMS data in described subframe comprises further:
Judge whether there is important system message in described subframe, if do not had, then total OFDM symbol number of described subframe is deducted the OFDM symbol number that described PDCCH takies, namely obtain the OFDM symbol number that described MBMS data takies; If had, after then total OFDM symbol number of described subframe being deducted the OFDM symbol number that described PDCCH takies, deduct the resource in the OFDM symbol number that described important system message takies or the OFDM symbol taken again, obtain the resource occupation information of described business datum.
5. the method as described in claim 1,2,3 or 4, is characterized in that,
Described subframe comprises non-multicast multicast single-frequency network network MBSFN sub-frame, or for the MBSFN sub-frame of bearing MBMS service.
6. a receiving system for business datum, is characterized in that, comprises resource occupation information unit and receiving element, wherein:
Described resource occupation information unit is used for, when receiving MBMS data, determine the resource occupation information of the control information of unicast service in subframe to be received, and calculate the resource occupation information of described subframe inner multimedia broadcast multicast services MBMS data according to the resource occupation information of the control information of described unicast service after, the resource occupation information of described MBMS data is sent to described receiving element;
Described receiving element is used for, and receives and resolves described MBMS data;
Wherein, described control information is PDCCH, and the resource occupation information of the control information of described unicast service refers to the OFDM symbol number taking described subframe; The resource occupation information of described MBMS data refer to take described subframe OFDM symbol number or OFDM symbol in part resource;
Described resource occupation information unit determines the OFDM symbol number that described PDCCH takies in the following way:
Receive and resolve the information on the PCFICH in first OFDM symbol of each described subframe; Or the information of the OFDM symbol number taken by the described PDCCH of instruction comprised in the high-level signaling that receives, to determine the OFDM symbol number that described PDCCH takies.
7. system as claimed in claim 6, is characterized in that,
Described resource occupation information unit determines that according to the resource occupation information of the control information of described unicast service the step of the resource occupation information of MBMS data in described subframe comprises further:
Judge whether there is important system message in described subframe, if do not had, then total OFDM symbol number of described subframe is deducted the OFDM symbol number that described PDCCH takies, namely obtain the OFDM symbol number that described MBMS data takies; If had, after then total OFDM symbol number of described subframe being deducted the OFDM symbol number that described PDCCH takies, deduct the resource in the OFDM symbol number that described important system message takies or the OFDM symbol taken again, obtain the resource occupation information of described MBMS data.
8. system as claimed in claims 6 or 7, is characterized in that,
Described subframe comprises non-MBSFN sub-frame, or for the MBSFN sub-frame of bearing MBMS service.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157636.6A CN101964946B (en) | 2009-07-21 | 2009-07-21 | Service data receiving method and system |
| PCT/CN2010/074098 WO2011009354A1 (en) | 2009-07-21 | 2010-06-18 | Method and system for receiving service data |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910157636.6A CN101964946B (en) | 2009-07-21 | 2009-07-21 | Service data receiving method and system |
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| CN101964946A CN101964946A (en) | 2011-02-02 |
| CN101964946B true CN101964946B (en) | 2015-07-22 |
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| WO (1) | WO2011009354A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325684A (en) * | 2007-06-14 | 2008-12-17 | 中兴通讯股份有限公司 | Method and system for transmitting ciphering control message based on mobile multimedia broadcast |
| CN101483510A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system |
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| CN1933379A (en) * | 2005-09-13 | 2007-03-21 | 华为技术有限公司 | Broadcasting business distributing method and system |
| CN1941687A (en) * | 2005-09-29 | 2007-04-04 | 华为技术有限公司 | Method for duplicating broadcasting service channel and non-broadcasting service channel |
| CN100578980C (en) * | 2008-03-05 | 2010-01-06 | 北京创毅视讯科技有限公司 | Document receiving method of mobile multimedia broadcasting system |
| CN101309120B (en) * | 2008-04-17 | 2010-12-08 | 中兴通讯股份有限公司 | Method and apparatus for terminal acquiring decrypt and de-disturbing information |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101325684A (en) * | 2007-06-14 | 2008-12-17 | 中兴通讯股份有限公司 | Method and system for transmitting ciphering control message based on mobile multimedia broadcast |
| CN101483510A (en) * | 2008-01-07 | 2009-07-15 | 大唐移动通信设备有限公司 | Notification method and apparatus for uplink and downlink time slot proportion information in time division duplex system |
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| CN101964946A (en) | 2011-02-02 |
| WO2011009354A1 (en) | 2011-01-27 |
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