CN102138351A - Transmitting and obtaining method, apparatus and system for multimedia broadcast multicast service (mbms) control information - Google Patents

Transmitting and obtaining method, apparatus and system for multimedia broadcast multicast service (mbms) control information Download PDF

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Publication number
CN102138351A
CN102138351A CN200980123688XA CN200980123688A CN102138351A CN 102138351 A CN102138351 A CN 102138351A CN 200980123688X A CN200980123688X A CN 200980123688XA CN 200980123688 A CN200980123688 A CN 200980123688A CN 102138351 A CN102138351 A CN 102138351A
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cycle
modification cycle
numbering
information
control information
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CN102138351B (en
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余成文
黄曲芳
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XFusion Digital Technologies Co Ltd
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Huawei Technologies Co Ltd
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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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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A transmitting and obtaining method, apparatus and system for multimedia broadcast multicast service (MBMS) control information are provided. Wherein, the obtaining method for MBMS control information includes: receiving a serial number of cycle information corresponding to the modification period of MBMS control information (11); determining the border of the modification period according to the serial number (12); obtaining the control information corresponding to the MBMS in the determined border of the modification period (13). The embodiments of the present invention enable UE to exactly determine the border of the modification period with any length, improve the flexibility for transmitting and obtaining the MBMS control information, and facilitate the UE to obtain the latest MBMS control information in the border of the modification period in time.

Description

The transmission of multimedia broadcast multicast service control information and acquisition methods, device and system
The transmission of multimedia broadcast multicast service control information and acquisition methods, device and system technical field
The present invention relates to wireless communication technology, the transmission of more particularly to a kind of multimedia broadcast multicast service control information and acquisition methods, device and system.Background technology multicast service (Multimedia Broadcast Multicast Service referred to as draw S), which can be saved substantially, relates generally to two class channels in interface-free resources, MBMS transmitting procedures：MBMS control channels (Multicast Control Channel, abbreviation MCCH) and MBMS channel（MBMS Traffic Channel, abbreviation MTCH);Wherein, MCCH is used to transmit MBMS control information, user equipment（User Equipment, abbreviation UE) receive MBMS data according to these control information；MTCH is used for the user data for transmitting MBMS.Because UE can start to receive MBMS information at any time, therefore MBMS control information is cyclical transmission in the prior art.The MBMS control information carried on MCCH（Hereinafter referred to as MCCH message）Transmission cycle include：Repetition period（Repetition Period, abbreviation RP) and modification cycle (modification period, abbreviation MP).MCCH message is typically only capable to change when across the modification cycle, and certainly, MCCH message can not also change when across the modification cycle.Each modification cycle includes multiple repetition periods；In each repetition period, network sends a MCCH message.Each repetition period in the same modification cycle, the content of MCCH transmission is identical.
The modification cycle of MCCH message and the length of repetition period are indicated by system information broadcast；Radio frame number can be used in system broadcasts（System Frame N Let ber, abbreviation SFN) mode, the original position for changing cycle and repetition period is notified into UE.In Long Term Evolution（Long Term Evolution, abbreviation LTE) in system, SFN span is 0-1023, unit is 10ms, and UE can only determine the original position in MCCH cycles according to SFN, therefore, MCCH modification cycle and the length of repetition period are no more than SFN cycle periods (1024 radio frames）, i.e., 10.24 seconds.And UE will receive MBMS data, it is necessary to use newest MBMS control information, this, which is accomplished by UE, can know that MCCH message changes in time, And the MCCH message after changing is read in time.
If MCCH modification cycle and repetition period, UE can not accurately obtain the original position in MCCH cycles more than 10. 24 seconds, newest MCCH control information can not be also obtained.The embodiments of the invention provide a kind of transmission of multimedia broadcast multicast service control information and acquisition methods, device and system for the content of the invention, the flexibility of the corresponding modification cycle boundary of multimedia broadcast multicast service control information is determined to improve UE, so as to be conducive to improving the flexibility that UE obtains multimedia broadcast multicast service control information.
The embodiments of the invention provide a kind of acquisition methods of multimedia broadcast multicast service control information, including：Receive the numbering of the modification cycle corresponding cyclical information of multicast service MBMS control information；The border in the modification cycle is determined according to the numbering；
The corresponding control information of the MBMS is obtained on the border in the modification cycle.
The embodiment of the present invention additionally provides a kind of transmission method of multimedia broadcast multicast service control information, including：For the modification cycle corresponding corresponding numbering of cyclical information generation of multicast service MBMS control information；
The numbering, the border for determining the modification cycle are sent to user equipment.
The embodiment of the present invention additionally provides a kind of base station, including：
Numbering generation module, the modification cycle corresponding corresponding numbering of cyclical information generation for the control information for multicast service MBMS；
Sending module, for sending the numbering, the border for determining the modification cycle to user equipment.
The embodiment of the present invention additionally provides a kind of user equipment, including：
Numbering receiving module, the numbering of the modification cycle corresponding cyclical information for receiving multicast service MBMS control information；
Border determining module, the border for determining the modification cycle according to the numbering；
Control information acquisition module, for obtaining the corresponding control information of the MBMS on the border in the modification cycle. The embodiment of the present invention additionally provides a kind of communication system, including：
Base station, the modification cycle corresponding corresponding numbering of cyclical information generation for the control information for multicast service MBMS, and send the numbering；And,
User equipment, for receiving the numbering that the base station is sent；The border in the modification cycle is determined according to the numbering；The corresponding control information of the MBMS is obtained on the border in the modification cycle.Network side of the embodiment of the present invention is numbered by changing MBMS the cyclical information in cycle, so that UE can be according to the accurate border for changing the cycle for determining random length of corresponding numbering, improve transmission and obtain the flexibility of MBMS control information, so as to be conducive to UE to obtain newest MBMS control information in time on the border in modification cycle.Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the required accompanying drawing used in embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
The acquisition methods flow chart for the MBMS control information that Fig. 1 provides for first embodiment of the invention；The transmission method flow chart for the MBMS control information that Fig. 2 provides for second embodiment of the invention；The transmission for the MBMS control information that Fig. 3 a provide for third embodiment of the invention and acquisition methods flow chart；
The MCCH transmission means schematic diagrames that Fig. 3 b provide for third embodiment of the invention；
The transmission for the MBMS control information that Fig. 4 a provide for fourth embodiment of the invention and acquisition methods flow chart；
The MCCH transmission means schematic diagrames that Fig. 4 b provide for fourth embodiment of the invention；
The transmission for the MBMS control information that Fig. 5 provides for fifth embodiment of the invention and acquisition methods flow chart；
The acquisition methods flow chart for the MBMS control information that Fig. 6 provides for sixth embodiment of the invention；The architecture of base station schematic diagram that Fig. 7 provides for seventh embodiment of the invention； The user device architecture schematic diagram that Fig. 8 provides for eighth embodiment of the invention；
The communication system architecture schematic diagram that Fig. 9 provides for ninth embodiment of the invention.Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The acquisition methods flow chart for the MBMS control information that Fig. 1 provides for first embodiment of the invention.The present embodiment illustrates the technical scheme of the acquisition methods of MBMS control information from user equipment (UE) side.As shown in figure 1, the acquisition methods of the present embodiment MBMS control information include：
Step 11, the numbering for changing cycle corresponding cyclical information for receiving MBMS control information.
Optionally, cycle corresponding cyclical information is changed in this step may include：The repetition period that the modification cycle includes.Wherein, the modification cycle can be the numbering in the specific modification cycle of the corresponding control information of single MBMS, then one or more repetition periods that the numbering in this step can include for the specific modification cycle；Or, the modification cycle can also be the numbering in the common modifications cycle, then one or more repetition periods that the numbering in this step can include for the common modifications cycle of the corresponding control information of multiple MBMS.
Optionally, cycle corresponding cyclical information is changed in this step may include：Modification cycle corresponding radio frame number cycle period；Now, the numbering in this step can be the corresponding numbering of each radio frame number cycle period generation.
Step 12, the border for determining according to above-mentioned numbering the modification cycle.
UE is according to above-mentioned numbering, the relevant information obtained with reference to system broadcast message or other manner, you can it is determined that the border in modification cycle.For example：
If the numbering that UE is received is the repetition period numbering included in the modification cycle, the length of the repetition period of MBMS control information and the original position of repetition period can notify UE by system broadcasts or be pre-configured with UE sides, and the modification Cycle Length of MBMS control information can be by system broadcasts or MCCH message UE is notified, now, UE can determine the border in modification cycle according to the above- mentioned information of acquisition, so that UE obtains newest MCCH message in time；
If the number information that UE is received is the numbering of modification cycle corresponding radio frame number cycle period, it is to determine due to the length of each radio frame number cycle period, the modification Cycle Length of MBMS control information can notify UE by the mode of system broadcasts or MCCH message, UE can determine the border in modification cycle according to the above- mentioned information of acquisition, so that UE obtains newest MCCH message in time.
Step 13, it is determined that the border in modification cycle obtain the corresponding control information of MBMS.
Because when across the modification cycle, the MCCH message transmitted on MCCH is likely to occur change.When UE determines the border in modification cycle, can be on the border in modification cycle, original position such as in the modification cycle next time obtains MCCH message, so that UE can know whether MCCH message changes in time, and when MCCH message changes, newest MCCH message can be obtained in time, so that UE is according to newest MCCH message sink MBMS datas.
The present embodiment UE can obtain the cyclical information in the MCCH modification cycles of arbitrary size, add the flexibility of the acquisition of MBMS control information, and the Signalling exchange without increase network side and UE, be conducive to saving interface-free resources.
The transmission method flow chart for the MBMS control information that Fig. 2 provides for second embodiment of the invention.The present embodiment is from network side, such as base station（Evo l ved NodeB, abbreviation eNB) side, illustrate the technical scheme of the transmission method of MBMS control information.As shown in Fig. 2 the transmission method of the present embodiment MBMS control information includes：
Step 21, the modification cycle corresponding corresponding numbering of cyclical information generation for MBMS control information.
Optionally, cycle corresponding cyclical information is changed in this step may include：The repetition period that the modification cycle includes.Wherein, the modification cycle can be the specific modification cycle of the corresponding control information of single MBMS, then one or more repetition periods that eNB can include for the specific modification cycle in this step are numbered.Or, the modification cycle can also be the common modifications cycle of the corresponding control information of multiple MBMS, then one or more repetition periods that eNB can include for the common modifications cycle in this step are numbered. Optionally, cycle corresponding cyclical information is changed in this step may include：Modification cycle corresponding radio frame number cycle period, then eNB can be the corresponding numbering of each radio frame number cycle period generation in this step.
Step 22, to user equipment send above-mentioned numbering, the border for determining the above-mentioned modification cycle.Accordingly, UE can be according to above-mentioned number information, the other information obtained with reference to system broadcast message, you can it is determined that the border in modification cycle, specifically refers to the record of Fig. 1 correspondence embodiment steps 12 step 13, no longer Redundant is stated.
The transmission method of the present embodiment MBMS control information can support the MCCH of arbitrary size to change the cycle, improve the flexibility of realization, and the Signalling exchange without increase network side and UE, be conducive to saving interface-free resources.The MBMS cyclical informations for changing the cycle are numbered by network side equipment for the present embodiment, are conducive to UE accurately to determine the border in modification cycle, so as to be conducive to UE to obtain newest MBMS control information in time on the border in modification cycle.
The transmission for the MBMS control information that Fig. 3 a provide for third embodiment of the invention and acquisition methods flow chart.The MCCH transmission means schematic diagrames that Fig. 3 b provide for third embodiment of the invention.The present embodiment application scenarios are：Network side（Such as eNB) be the corresponding control information of single MBMS the modification cycle, i.e., multiple repetition periods in the specific modification cycle are numbered；UE determines the border in modification cycle according to the numbering of repetition period.As shown in Figure 3 a and Figure 3 b shows, the transmission of MBMS control information of the present invention and acquisition methods include：Step 31, eNB are the corresponding numbering of generation of each repetition period in a modification cycle, send MCCH message to UE and the repetition period numbers accordingly.
MBMS control information is transmitted by MCCH in the present embodiment, as shown in Figure 3 b, the modification cycle of a MBMS control information（MP n repetition period) is included（RP), in each repetition period, eNB sends a MCCH message, and MCCH message carries MBMS control information.The content transmitted in each repetition period that the same modification cycle includes by MCCH is identical, i.e. MCCH message is identical；The MCCH message transmitted in each repetition period that the different modification cycles include may be identical or different.A kind of possible scene for example shown in Fig. 3 b is such as：First MCCH message is identical with the 2nd MCCH message possibility, but the 2nd MCCH message and the possible difference of the 3rd MCCH message, etc.. ENB carries out serial number to the n repetition period in a certain modification cycle in the present embodiment, and while transmitting MCCH message within the corresponding repetition period, transmits the corresponding number information of current repetition period.For example：ENB serial numbers since " 0 " by each repetition period in the modification cycle, then when transmitting MCCH message for the first time within the modification cycle, the numbering " 0 " of simultaneous transmission current repetition period；Within the modification cycle during second of transmission MCCH message, the numbering " 1 " of simultaneous transmission current repetition period；By that analogy.
The mode of the number information of network side equipment, such as eNB transmission repetition period is unrestricted, can individually be sent the number information of repetition period as a new message, can also carry the number information of repetition period and be sent in MCCH message.For example：
The number information of repetition period can be encapsulated in the protocol Data Unit of the different layers of packet by eNB in the packet that encapsulation is sent to UE.For example：The protocol stack that eNB is followed to the UE packet encapsulations sent is：Physical layer/radio resource control (Radio Resource Control, abbreviation RRC)/data link layer/non-access（Non Access, abbreviation NAS) layer；Wherein data link layer includes three sublayers：Packet data convergence protocol（Packet Data Convergence Protocol, abbreviation PDCP) layer, wireless spread-spectrum technology（Radio Link Control, abbreviation RLC) layer and medium plan（Med i Let Access Control, abbreviation MAC) layer.In the scene, eNB can send the number information of repetition period one of in the following ways：
1st, number information is encapsulated in NAS layers or the protocol Data Unit of rrc layer.
2nd, number information is encapsulated in the corresponding protocol Data Unit of any sublayer in a data link layer, such as：Number information is encapsulated in PDCP layers of protocol Data Unit, or rlc layer protocol Data Unit, or in the protocol Data Unit of MAC layer.
3rd, a certain sublayer of data link layer is generated into an independent control data bag, encapsulates number information in the control data bag, such as：The control data bag can be generated by PDCP layers, or rlc layer, or MAC layer.
4th, number information is placed in the message body of any layer or any sublayer, such as：Number information is placed on
In NAS layers of message body or in the message body of rrc layer, or in PDCP bags, or in RLC bags, or MAC In bag.
5th, by the instruction of physical layer, or redundancy version information indicates the number information.
Multiple repetition periods that the MCCH modification cycles of single MBMS control information include are numbered the present embodiment eNB, and number information is sent to UE, thus the present embodiment supports eNB to indicate that the MCCH of random length is changed the cycle to UE, such as supports eNB to indicate less than, greater than or equal to SFN cycle periods length (1 0. 24 seconds）MCCH modification the cycle, hence it is evident that improve MBMS control information transmission flexibility.
Step 32, eNB send the length information, the start position information of repetition period and the length information for changing the cycle of repetition period.
The start position information of length and repetition period for the repetition period, eNB can use BCCH（Broadca s t Con t ro l Channe l, abbreviation BCCH) UE is notified in the way of system broadcasts.The length information in modification cycle can also notify UE by way of system broadcasts, or, the length information in modification cycle is carried in MCCH message.
Step 33, UE calculate current MCCH transmission times apart from the time difference of current Modification Period end position, and the original position in next modification cycle is determined according to the time difference.
UE can obtain the length information and the start position information of repetition period of MCCH repetition periods by BCCH, and the MCCH message carried on a MCCH is read according to these information, the MCCH message at this moment read is not necessarily the first time transmission in the MCCH modification cycles.MCCH message may include that current MCCH transmits the numbering of corresponding repetition period, may also include the length in modification cycle.The length information in MCCH modification cycles can be known by reception system broadcast mode, can also be obtained by reading MCCH message.
It can be seen that, the information that UE has been obtained includes：
1st, RP length；
2nd, MP length；
3rd, the numbering for the repetition period corresponding to the transmission of MCCH message currently read（count ) .
UE calculates the time difference of current MCCH transmission times and current Modification Period end position according to below equation (1)： (next modification cycle initial position-current time）=[(MP length）/ (RP length）- count] * (RP length） ( 1 )
According to formula（1) result, UE can be accurately positioned the original position in next modification cycle.The original position of step 34, UE in next modification cycle obtains newest MCCH message.
Using the above method, UE can be accurately positioned the original position in modification cycle, so that UE reads newest MCCH message in this position.
Multiple repetition periods that the modification cycle of single MBMS control information includes are numbered by network side equipment (such as eNB) for the present embodiment, UE is conducive to accurately to obtain the border in modification cycle, so as to be conducive to UE to obtain newest MBMS control information on the border in modification cycle.The present embodiment supports network side equipment to change the information in cycle to the MCCH of random length and indicate, adds the flexibility of MBMS control information transmission, and the Signalling exchange without increase network side and UE, is conducive to saving interface-free resources.
The transmission for the MBMS control information that Fig. 4 a provide for fourth embodiment of the invention and acquisition methods flow chart.The MCCH transmission means schematic diagrames that Fig. 4 b provide for fourth embodiment of the invention.The present embodiment application scenarios are：Network side equipment（Such as eNB) a public modification cycle, i.e. common modifications cycle are configured for the corresponding control information of multiple MBMS, it is numbered for multiple repetition periods in the common modifications cycle；UE determines itself to need the border in the modification cycle of the corresponding control information of MBMS of reception according to the numbering of repetition period.As shown in figures 4 a and 4b, the transmission of MBMS control information of the present invention and acquisition methods include：Step 41, eNB are that each self-corresponding control information of multiple MBMS sets the common modifications cycle, the corresponding numbering of generation of multiple repetition periods included for the common modifications cycle, sends MCCH message, repetition period to UE and numbers accordingly and the first deviant.
The deviant of the present embodiment first is used for the skew for representing the original position of the original position relative to the common modifications cycle in the specific modification cycle of the corresponding control information of each MBMS；First deviant can be the integral multiple of repetition period.In the present embodiment, the first deviant is the conversion information between the control information corresponding specific modification cycle of each MBMS and the common modifications cycle of definition.
Due to that may provide a variety of MBMS in network, and each MBMS may have different control information modification frequency.Under the situation, eNB can set the specific modification cycle for each MBMS control information, I.e. every kind of MBMS control information should mutually have the respective specific modification cycle.The every kind of MBMS control information corresponding specific modification cycle is all the integral multiple of the repetition period of MCCH message transmission, and the different MBMS corresponding specific modification cycles can be different.ENB can configure a common modifications cycle for each self-corresponding control information of a variety of MBMS.
As shown in Figure 4 b, it is assumed that the MBMS that network includes has：MBMS-A and MBMS-B, the modification frequency of two kinds of MBMS control information is different, i.e. the specific modification cycle of MBMS-A control information, different from the specific modification cycle of MBMS-B control information.ENB is that MBMS-A control information and MBMS-B control information set a common modifications cycle.The specific modification cycle of common modifications cycle and various MBMS control information is all the integral multiple of repetition period, the corresponding MCCH message in the maximum specific modification cycle, transmitted within a common modifications cycle in the different repetition periods of control information that the common modifications cycle generally may be configured as being more than or equal to each MBMS in network may be identical or different.
The n repetition period in the common modifications cycle can be carried out serial number by eNB, for example：By each repetition period in the common modifications cycle since " 0 " serial number, then when transmitting MCCH message for the first time within the common modifications cycle, the numbering " 0 " of simultaneous transmission current repetition period；Within the common modifications cycle during second of transmission MCCH message, the numbering " 1 " of simultaneous transmission current repetition period；By that analogy.
While eNB transmits MCCH message within the corresponding repetition period, transmission current repetition period is numbered accordingly, and the length information in every kind of MBMS control information corresponding specific modification cycle, in addition, the original position in the control information that can also transmit every kind of MBMS corresponding specific modification cycle and the first deviant of common modifications cycle initial position.Transmitted it should be noted that the information such as the original position and the first deviant in specific modification cycle had both been carried in MCCH message, can also by other means, the mode such as by system broadcast message is transmitted.In two business as shown in Figure 4 b, the length in business MBMS-A corresponding specific modification cycles is 4 times of repetition period length, and the original position in specific modification cycle is identical with the original position in common modifications cycle, and its first deviant is equal to 0;The length in business MBMS-B corresponding specific modification cycles is 6 times of repetition period length, and the original position in specific modification cycle is different from the original position in common modifications cycle, and its first deviant is equal to 1.
Step 42, eNB send the length information of repetition period, the start position information of repetition period, each Specific modification Cycle Length and the first deviant corresponding to the control information of MBMS.
The start position information of length and repetition period for the repetition period, eNB can use BCCH to notify UE in the way of system broadcasts.Specific modification Cycle Length and the first deviant corresponding to the control information of each MBMS are carried in MCCH message and are sent to UE.
Step 43, UE calculate the border in the control information corresponding specific modification cycle for itself wanting the MBMS received.
UE can obtain the length information and the start position information of repetition period of MCCH repetition periods by BCCH, and the MCCH message carried on a MCCH is read according to these information, the MCCH message at this moment read is not necessarily the first time transmission in the MCCH modification cycles.By BCCH and MCCH message, UE awareness informations may include：
1st, RP length and the original position of repetition period；
2nd, public father changes the cycle（Common per i od, abbreviation CP) length；
3rd, UE wishes that MBMS received the corresponding MP of control information length（In units of RP）；
4th, UE wishes the corresponding MP of that MBMS received the first deviant (of f s e t, in units of RP）；
5th, the numbering for the repetition period corresponding to the transmission of MCCH message that UE is currently read（coun t ) .Optionally, UE can store the numbering of the repetition period of reading, often by a repetition period, UE is actively currently stored numbering after the numbering for reading the repetition period corresponding to the MCCH message of current transmission（Count) Jia 1, and modulo operation is carried out to the common modifications cycle.It can for example be judged using following formula (2)：
(MCCH transmits corresponding numbering）Mod (MP length）=the first deviant（2) above-mentioned formula is met（2) repetition period corresponding to numbering when is the border that UE wishes the MBMS received the control information corresponding specific modification cycle, the content of the MCCH message of boundary transmission may send change, i.e. UE and wish that the MBMS received control information may change.
Step 44, UE were defined as in the repetition period corresponding to the numbering on the border in specific modification cycle, obtained newest MCCH message. Using the above method, UE can be accurately positioned the original position in modification cycle, so that UE reads newest MCCH message in this position.
The present embodiment network side can configure the different modification cycles for each MBMS control information, support maximum length to be indicated for the information in the modification cycle of common period, add the flexibility of MBMS control information transmission.When the corresponding change frequency of different MBMS control information is different, the present embodiment can set the different MCCH modification cycles for each MBMS, make UE receive the specific MBMS MCCH control information corresponding modification cycle according to it to read MCCH information；The low MBMS of frequency is changed control information, this embodiment reduces the number of times that UE reads MCCH message, UE power consumption is advantageously reduced.
The transmission for the MBMS control information that Fig. 5 provides for fifth embodiment of the invention and acquisition methods flow chart.The present embodiment application scenarios are：SFN cycle periods are extended, that is, increase k bit（B i t) it is numbered come the number to SFN cycle periods, so that UE determines the border in MBMS control information corresponding modification cycle according to the numbering of SFN cycle periods.As shown in figure 5, the transmission of the present embodiment MBMS control information and acquisition methods include：
Step 51, eNB determine the number of corresponding with MBMS control information modification cycle corresponding SFN cycle periods, are each corresponding numbering of SFN cycle periods generation, transmission is corresponding with the SFN cycle periods belonging to the SFN of current broadcast to number.
The present embodiment is more than SFN cycle periods (1 0. 24 seconds to solve the MBMS control information corresponding modification cycle）Under situation, how UE recognizes the problem of MCCH changes cycle initial position, can be to SFN cycle periods（1 0. 24 seconds）It is extended, that is, the SFN circulations after extending are represented by the connection of the SFN cycle periods before multiple extensions, and the k bit of increase in system message（B i t) it is used to represent the numberings of SFN cycle periods, the numbering of SFN cycle periods is alternatively referred to as system of system frame number（SuperSFN), wherein, k is positive integer.Numbering is carried in broadcast in system information to SFN cycle periods belonging to the SFN of current broadcast accordingly.For the bit needed for SFN cycle periods generate corresponding numbering（B i t) number each MBMS according to present in network control information corresponding possible maximum MCCH modification cycles determine, SFN cycle periods (1 0. 24 * 2 that the possible maximum MCCH modification cycles are less than or equal to after extensionkSecond, k is increased bit number, and its value is positive integer）.For example：Assuming that k=4, The duration needed for SFN cycle periods so after Broadcast Extension is： 1 0. 24 * 24=163. 84 seconds.Step 52, eNB send the length information and the second deviant in modification cycle（of f se t ) .
Relative to SFN is originated in the SFN cycle periods after extension, (SFN is equal to 0 radio frames position to the original position in modification cycle of the deviant of the present embodiment second for representing MBMS in i.e. first SFN cycle period）Skew.In the present embodiment the second deviant and modification the cycle length be that in units of radio frames, the two information is all carried in MCCH message and is sent to UE.If there are multiple MBMS in network, the length information in the modification cycle of the corresponding control information of multiple MBMS may be the same or different, and second deviant in the modification cycle of the corresponding control information of multiple MBMS may be the same or different.
The numbering of the SFN cycle periods of step 53, UE according to belonging to the SFN of current broadcast determines the border in modification cycle.
UE is obtained from system message after the numbering of SFN cycle periods, optionally, and UE stores the numbering of the SFN cycle periods, and often by a SFN cycle period（I.e. 1 0. 24 seconds）, the number value for the SFN cycle periods that UE is actively stored to itself（SuperSFN) Jia 1.UE can use formula（3) determine that MCCH changes the border in cycle：
[(current SFN)+(SuperSFN * 1 024) mod (MP length）The deviant of]=second（3) formula is met（3) the corresponding radio frames of current SFN when are the border that UE wishes the MBMS received the control information corresponding modification cycle, the content of the MCCH message of boundary transmission may change, i.e. UE wishes that the MBMS received control information may change.
Step 54, UE obtain MCCH message within the repetition period being defined as where the radio frames on border in modification cycle.
Using the above method, UE can be accurately positioned the original position in modification cycle, so that UE reads newest MCCH message in this position.
The present embodiment network side can configure the different modification cycles for each MBMS control information, support maximum length to be indicated for the information in the modification cycle of common period, add the flexibility of MBMS control information transmission.When the corresponding change frequency of different MBMS control information is different, the present embodiment can set the different MCCH modification cycles for each MBMS, UE is received specific MBMS MCCH control information according to it The corresponding modification cycle reads MCCH information；The low MBMS of frequency is changed control information, this embodiment reduces the number of times that UE reads MCCH message, UE power consumption is advantageously reduced.
The present embodiment to SFN cycle periods by being extended, it is possible to resolve the MCCH control information corresponding modification cycle of MBMS is more than maximum SFN cycle periods（1024 radio frames, i.e. 10.24s) when, how UE recognizes that MCCH changes cycle boundary, and the problem of such as MCCH changes the original position in cycle adds the flexibility of MBMS control information transmission；The present embodiment be conducive to UE it is determined that MCCH change the cycle border, newest MCCH control information is obtained in time.
In the embodiments of the present invention, UE determines the original position in next modification cycle, the position of such as repetition period where amended MCCH message, can be accurate to read MCCH message further combined with its determination comprising the position in radio frames position of the radio frames in the repetition period of MCCH message and the wireless sub-frame comprising MCCH message.
The acquisition methods for the MBMS control information that sixth embodiment of the invention is provided, it is adaptable to LTE communication system, are applied also in other systems, such as LTE+ communication systems.The acquisition methods flow chart for the MBMS control information that Fig. 6 provides for sixth embodiment of the invention.As shown in fig. 6, the present embodiment illustrates the acquisition methods of MBMS control information from UE sides, the implementation that the acquisition methods of MBMS control information provided in an embodiment of the present invention are applied in other systems is similar to the present embodiment, and no longer Redundant is stated.
MCCH and MTCH in LTE communication systems can use multicast service Single Frequency Network (Multimedia Broadcast multicast service Single Frequency Network, abbreviation MBSFN) pattern transmission, and it is mapped to Multicast Channel（Multicast Channel, abbreviation MCH) on.In this transfer mode, certain area（Referred to as MBSFN regions）Interior multiple cells send identical packet in identical time and identical frequency using identical transmission mode.These signals of transmission carry out the merging of physical layer in receiving terminal, for UE, it is impossible to distinguish the cell source of these message.The respective control message of multiple business in same MBSFN regions is sent by same MCCH.
MBSFN sub-frame refers to for transmitting MBSFN data or base station to the subframe of data between via node.MBSFN frames be include in a kind of radio frames, MBSFN frames can as MBSFN sub-frame subframe.But in MBSFN frames can as MBSFN sub-frame subframe, can basis whether as MBSFN sub-frame in practical application System indicates according to actual needs, for example：System can be according to bitmap（B i tmap) indicate which subframe is used as MBSFN sub-frame in MBSFN frames.May also include part in each MBSFN frames does not allow other subframes as MBSFN subframes.MBSFN frame periods property occurs, and its cycle is referred to as the MBSFN frame periods, and the original position in MBSFN frame periods is the original position of first MBSFN frame containing MBSFN sub-frame in the cycle.One or four continuous MBSFN frame is included within a MBSFN frame period.MBSFN is generally not used for the unicast data transmission between base station and user terminal, therefore, MBSFN frame periods, the 3rd deviant (of f set) and MBSFN sub-frame bitmap（B i tmap) it can be broadcasted in system information, wherein, MBSFN frame periods and the 3rd deviant are all in units of radio frames.The 3rd deviant in the present embodiment is used for skew of the original position relative to SFN cycle periods original position (the radio frames position for being equal to 0 relative to SFN in current SFN cycle periods) for representing first MBSFN frame containing MBSFN sub-frame.UE can obtain these parameters by reading system information.
As shown in fig. 6, the acquisition methods of the present embodiment MBMS control information include：
Step 61, UE determine MBSFN sub-frame position.It can be determined using following methods：
1st, UE obtains the radio frame number of current radio frames by system message（I.e. current SFN), MBSFN frame periods and MBSFN frame start positions, and UE is according to these parameters of acquisition, and equation below is used in each radio frames（4) judged：
(current SFN) mod (MBSFN frame period length）=the three deviant（4) if above-mentioned formula is set up, current radio frames are first MBSFN frames in the MBSFN frame periods；Whether first MBSFN frame includes the subframe in practical application as MBSFN subframes, can be indicated by MBSFN sub-frame bitmap.
2nd, UE is compared by MBSFN sub-frame bitmap and present sub-frame, determines which subframe is MBSFN sub-frame in the MBSFN cycles.
Because each radio frames part subframe does not allow to be used as MBSFN sub-frame, such as：The of each radio frames
0th, 4,5,9 work song frames do not allow to be used as MBSFN sub-frame, therefore 6b i t or 24b i t can be used in network Bitmap（B i tmap) indicate which subframe is MBSFN sub-frame within the MBSFN frame periods, i.e., one or four continuous which subframe of MBSFN frame ins is MBSFN sub-frame, the bitmap is MBSFN sub-frame bitmap.UE receives MBSFN sub-frame bitmap by system message, and by the bit of each subframe in the MBSFN frame periods and MBSFN sub-frame bitmap（B i t) position is compared.If MBSFN sub-frame bitmap bit corresponding with present sub-frame is " 1 ", show that present sub-frame allows as MBSFN sub-frame.
UE can determine that MBSFN sub-frames all in the MBSFN frame periods by this step.
Step 62, UE determine to carry the MBSFN sub-frame position of MCCH message.
Each MCCH repetition periods may include multiple radio frames, the usual transmission primaries MCCH message within a MCCH repetition period.The original position of MCCH repetition periods is in MBSFN frames are constituted in the radio frames included the MCCH repetition periods MBSFN frame periods, first contain MCCH message（Or MCCH message fragments）MBSFN frames original position.The length and the original position of MCCH repetition periods of MCCH repetition periods can be broadcasted in system information, and UE can obtain these parameters by reading system information.Afterwards, UE can determine that each repetition period includes the quantity of radio frames according to the length of MCCH repetition periods, just the blunt original position according to the MCCH repetition periods determine in MBSFN frames are constituted in these radio frames MBSFN cycles, the original position of first MBSFN frame containing MCCH message.If the original position for pre-setting the MCCH repetition periods is identical with the original position in MBSFN frame periods, system message can no longer broadcast the start position information of MCCH repetition periods.
UE determines to include the MBSFN sub-frame of MCCH message in the MCCH repetition periods by step 621 step 62 3.
Step 621, UE determine to carry the MBSFN frames of MCCH message in the MCCH repetition periods.
UE can use formula（5) each radio frames that the MCCH repetition periods include are judged：
(current SFN) mod (RP length）=the four deviant（5) formula（5) in, the 4th deviant is used for the original position for representing the repetition period relative to SFN cycle period original positions（I.e. relative to SFN in current SFN cycle periods be equal to 0 radio frames position) skew.If formula（5) set up, then current radio frames are first MBSFN frames of MCCH repetition periods, and current radio frames carry MCCH message. Step 622, UE determine to include the MBSFN sub-frame of MCCH message according to system configured information in current MBSFN frames.
MCCH message is all carried in not all MBSFN sub-frame.After UE determines first MBSFN frame of MCCH repetition periods, also need to further determine that MCCH message is carried in first MBSFN frame ins which MBSFN sub-frame, or, if MCCH message has carried out segment processing, it needs to be determined that MCCH message is carried in first MBSFN frame ins which MBSFN sub-frame.
System can indicate to include the positional information of the MBSFN sub-frame of MCCH message and the modulation coding mode (Modulat ion and Coding Scheme, abbreviation MCS) for parsing MCCH message using one of following methods：
1st, variable information is broadcasted, the variable information is used to indicate position and MCS information of the MBSFN sub-frame for including MCCH message in the MCCH repetition periods, such as：Serial number is carried out to the subframe in each radio frames in the MCCH repetition periods, the numbering for the subframe for including MCCH message is broadcasted by system message.Under the situation, the subframe that first MBSFN frame in is accordingly numbered is the MBSFN subframes for including MCCH message.
2nd, broadcast bitmap, the bitmap is used to indicate the repetition period（Such as：Previous or preceding four continuous radio frames in repetition period）In include MCCH message or MCCH message fragments subframe position and MCS information.UE can obtain the bitmap by system message, and the bitmap is compared with each subframe in first MBSFN frame in the MCCH repetition periods, if bitmap bit corresponding with present sub-frame is " 1 ", it is the MBSFN sub-frame for including MCCH message to show present sub-frame.
In addition, system can also be according to actual needs, the MCS that the position and parsing MCCH message that the fixation subframe of storage MCCH message is set on network side and UE are used, as first MBSFN sub-frame in first MBSFN frame in the MCCH repetition periods is used to deposit MCCH message, under the situation, the position of the MBSFN sub-frame containing MCCH message and MCS information do not need system information broadcast then.
Step 623, UE read MCCH message in the MBS FN subframes that step 622 is determined.
The resource block location that fixed assets source block locations or system information of the UE in the MBSFN sub-frame that step 622 is determined are indicated obtains MCCH message.UE can obtain the modification of MBMS control information from MCCH message Cycle corresponding cyclical information.For example：
If eNB is numbered for multiple repetition periods in the specific modification cycle of the corresponding control information of single MBMS, UE can obtain the numbering of current repetition period according to the MCCH message of reception, can also obtain the relevant informations such as length, the length of repetition period in specific modification cycle.If it should be noted that carrying above-mentioned numbering and relevant information in MCCH message, UE can obtain above-mentioned numbering and relevant information by MCCH message；Or, UE obtains above-mentioned numbering and relevant information by modes such as system broadcast messages.
If eNB, which is the corresponding control information of multiple MBMS, is configured with a common modifications cycle, it is numbered for multiple repetition periods in the common modifications cycle；UE can obtain the numbering of the repetition period in common modifications cycle according to the MCCH message of reception, can also obtain the original position in specific modification cycle of various MBMS control information relative to relevant informations such as the first deviants of the original position of common period.If it should be noted that carrying above-mentioned numbering and relevant information in MCCH message, UE can obtain above-mentioned numbering and relevant information by MCCH message；Or, UE obtains above-mentioned numbering and relevant information by modes such as system broadcast messages.
If eNB extends SFN cycle periods, that is, increase k bit（B i t) SFN cycle periods are numbered, then UE can obtain the length information in modification cycle according to MCCH message, and obtain the numbering of SFN cycle periods according to system broadcast message, change the original position in cycle relative to information such as the second deviants between first radio frame number position in first radio frame number cycle period.Or, UE obtains the length information in modification cycle by modes such as system broadcast messages.
Step 63, UE determine that MCCH changes the border in cycle, and obtain newest MCCH message on the MCCH borders for changing the cycle.
If eNB is numbered for multiple repetition periods in the modification cycle of the corresponding control information of single MBMS, UE according to modification the cycle repetition period numbering and currently received MCCH message, determining itself needs the concrete methods of realizing on the border in the MBMS of reception control information corresponding modification cycle, reference can be made to Fig. 3 a correspond to the record of step 33 in embodiment；No longer Redundant is stated.
If eNB is multiple MBMS, corresponding control information configures a common modifications cycle, is numbered for multiple repetition periods in the common modifications cycle；UE is according to the volume of the repetition period in common modifications cycle Number and currently received MCCH message, determine itself need receive MBMS the control information corresponding modification cycle border concrete methods of realizing, reference can be made to Fig. 4 a correspondence embodiment in step 43 record；Repeat no more.
If eNB extends SFN cycle periods, that is, increase k bit（Bi t) indicate the numberings of SFN cycle periods, then UE is according to the numbering and currently received MCCH message of SFN cycle periods, the concrete methods of realizing on the border in MCCH modification cycles is determined, the record of step 53 in Fig. 5 correspondence embodiments is referred to；No longer Redundant is stated.
In above-mentioned three kinds of situations, when UE determines the border in modification cycle, during such as next modification cycle initial position, UE then can be in the corresponding repetition period of the position the storage determined with step 622 of first MBSF frame have in the MBSF subframes of MCCH message, the newest MCCH message of reading.
In the present embodiment, when UE just starts to receive MBMS, relevant parameter need to be obtained by step 61 and step 62；Afterwards, during UE normally receives MBMS data, newest MCCH message only need to be obtained by step 63.If system information changes, the relevant parameter for causing UE to obtain changes, then UE can perform step 61 and step 62 herein to update the relevant parameter of itself acquisition, and normally receiving using the follow-up MBMS data of the relevant parameter progress after renewal.
In the present embodiment, the length information and the 4th deviant of repetition period can be transmitted in network side equipment, determines to include the radio frames of MCCH message for user equipment；4th deviant is used for skew of the original position relative to radio frame number cycle period original position for representing the repetition period.Further, network side equipment can also broadcast variable information or broadcast bitmap, wherein, the broadcast variable information or bitmap are used to indicate positional information and modulation coding information of the subframe for including MCCH message in the repetition period.Accordingly, the length information and the 4th deviant for the repetition period that the UE reception modification cycles include；According to the length information of repetition period and the 4th deviant, it is determined that including the radio frames of MCCH message；The positional information of subframe in the repetition period that the reception modification cycle includes where MCCH message and the modulation coding information for parsing MCCH message；It is determined that radio frames in above-mentioned MCCH message is read in subframe corresponding with above-mentioned positional information and above-mentioned MCCH message is parsed using above-mentioned modulation coding information.Wherein, the positional information of the subframe in the repetition period that the modification cycle includes where MCCH message and the modulating-coding for parsing MCCH message Information is carried in variable information or bitmap.
The present embodiment is in LTE communication system, UE can obtain the cyclical information in the MCCH modification cycles of arbitrary size, add the flexibility of the acquisition of MBMS control information, and the Signalling exchange without increase network side and UE, be conducive to saving interface-free resources, and can timely and accurately obtain newest MCCH message.It should be noted that the acquisition methods of MBMS control information provided in an embodiment of the present invention are also applied in other systems, such as LTE+ communication systems, its implementation is similar to the present embodiment, and no longer Redundant is stated.
The embodiment of the present invention, which is also provided, a kind of can realize the base station of above-mentioned each method embodiment.
The architecture of base station schematic diagram that Fig. 7 provides for seventh embodiment of the invention.As shown in fig. 7, the present embodiment base station includes：Numbering generation module 71 and sending module 72.
Numbering generation module 71 is used to be multicast service（MBMS the modification cycle corresponding corresponding numbering of cyclical information generation of control information).
Sending module 72 is used to send above-mentioned numbering, the border for determining the above-mentioned modification cycle to user equipment.
The operation principle of base station with numbering generation module and sending module function, reference can be made to the record of Fig. 2 correspondence embodiments, no longer Redundant is stated.
In above-mentioned technical proposal, optionally, cyclical information can further comprise：Repetition period or modification the cycle corresponding radio frame number cycle period that the modification cycle includes；Wherein, the above-mentioned modification cycle is specific modification cycle or common modifications cycle.
When corresponding cyclical information of above-mentioned modification cycle is the repetition period that the specific modification cycle includes, numbering generation module 71 may include the first numbering generation unit 71 1;Accordingly, sending module 72 may include the first transmitting element 721.
First numbering generation unit 71 1 is used for the number for the repetition period for determining that the above-mentioned specific modification cycle includes, and is the corresponding numbering of repetition period generation included in the above-mentioned specific modification cycle.
First transmitting element 721 is used to number accordingly to the repetition period that the user equipment transmission above-mentioned specific modification cycle includes.The border in specific modification cycle is determined for the ease of user equipment, optionally, the first transmitting element 721 can also be used to send the length information in above-mentioned specific modification cycle and above-mentioned specific modification The length information for each repetition period that cycle includes.
The operation principle of base station with the first numbering generation unit and the first transmitting element function, reference can be made to the record in Fig. 3 a embodiments corresponding with Fig. 3 b on eNB；No longer Redundant is stated.
When corresponding cyclical information of above-mentioned modification cycle is the repetition period that the common modifications cycle includes, numbering generation module 71 may include the second numbering generation unit 71 2;Accordingly, sending module 72 may include the second transmitting element 722.
Second numbering generation unit 712 is used for the number for the repetition period for determining that the above-mentioned common modifications cycle includes, and is the corresponding numbering of repetition period generation included in the above-mentioned common modifications cycle.
Second transmitting element 722 is used to number accordingly to the repetition period that the user equipment transmission above-mentioned common modifications cycle includes.The border in specific modification cycle is determined for the ease of user equipment, optionally, the second transmitting element 722 can be additionally used in first deviant of the original position relative to the original position in common modifications cycle for sending the length information in above-mentioned common modifications cycle, the length information in each MBMS control information corresponding specific modification cycle and each specific modification cycle.
The operation principle of base station with the second numbering generation unit and the second transmitting element function, reference can be made to the record in Fig. 4 a embodiments corresponding with Fig. 4 b on eNB；No longer Redundant is stated.
When above-mentioned ^ ' fathers change cycle corresponding cyclical information and change cycle corresponding radio frame number cycle period for above-mentioned ^ ' fathers, numbering generation module 71 may include the 3rd numbering generation unit 71 3;Accordingly, sending module 72 may include the 3rd transmitting element 72 3.
3rd numbering generation unit 71 3 is used for the number for determining corresponding radio frame number cycle period of above-mentioned modification cycle, is the corresponding corresponding numbering of radio frame number cycle period generation of above-mentioned modification cycle.
3rd transmitting element 72 3 is used to number accordingly to the above-mentioned modification cycle corresponding radio frame number cycle period of user equipment transmission.The border in specific modification cycle is determined for the ease of user equipment, optionally, the 3rd transmitting element 723 can be additionally used in the length information for sending the above-mentioned modification cycle and the original position in above-mentioned modification cycle relative to the second deviant between first radio frame number position in first radio frame number cycle period.
The operation principle of base station with the 3rd numbering generation unit and the 3rd transmitting element function, reference can be made to Record in Fig. 5 correspondence embodiments on eNB, no longer Redundant is stated.
The present embodiment base station is numbered by changing MBMS the cyclical information in cycle, so that UE can be according to the accurate border for changing the cycle for determining random length of corresponding numbering, improve transmission and obtain the flexibility of MBMS control information, so as to be conducive to UE to obtain newest MBMS control information in time on the border in modification cycle.
The embodiment of the present invention, which is also provided, a kind of can realize the user equipment of above-mentioned each method embodiment.The user device architecture schematic diagram that Fig. 8 provides for eighth embodiment of the invention.As shown in figure 8, the present embodiment user equipment includes：Numbering receiving module 81, border determining module 82 and control information acquisition module 83.
Numbering receiving module 81 is used to receive multicast service（MBMS) the numbering of the modification cycle corresponding cyclical information of control information.
Border determining module 82 is used for the border that the above-mentioned modification cycle is determined according to above-mentioned numbering.
The border that control information acquisition module 83 was used in the above-mentioned modification cycle obtains the corresponding control information of above-mentioned MBMS.
The operation principle of user equipment with above three functions of modules, reference can be made to the record of Fig. 1 correspondence embodiments, no longer Redundant is stated.
In above-mentioned technical proposal, optionally, cyclical information can further comprise：Repetition period or modification the cycle corresponding radio frame number cycle period that the modification cycle includes；Wherein, the above-mentioned modification cycle is specific modification cycle or common modifications cycle.
When corresponding cyclical information of above-mentioned modification cycle is the repetition period that the specific modification cycle includes, numbering receiving module 81 includes：First numbering receiving unit 81 1;Accordingly, border determining module 82 may include：First relevant information acquiring unit 821 1, the first computing unit 8212 and first start bit put determining unit 821 3.
The repetition period that first numbering receiving unit 81 1 includes for receiving the above-mentioned specific modification cycle numbers accordingly.
First relevant information acquiring unit 821 1 be used for obtain the above-mentioned specific modification cycle length information and The length information of above-mentioned repetition period.
First computing unit 8212 is used for length information and the length information of repetition period according to above-mentioned numbering, specific modification cycle, calculates the time difference of the original position apart from the current transmission moment in next specific modification cycle.
First start bit, which puts determining unit 8213, to be used for according to the above-mentioned time difference, determined the original position in next specific modification cycle.
Accordingly, control information acquisition module 83 is additionally operable to the original position in next specific modification cycle, receives the control information transmitted on MCCH.
The realization principle of the user equipment of the function such as determining unit and control information acquisition module is put with the first numbering receiving unit, the first relevant information acquiring unit, the first computing unit and first start bit, the record on UE in Fig. 3 a correspondence embodiments is referred to, no longer Redundant is stated.
When corresponding cyclical information of above-mentioned modification cycle is the repetition period that the common modifications cycle includes, numbering receiving module 81 includes：Second numbering receiving unit 812;Accordingly, border determining module 82 may include：Second relevant information acquiring unit 8221 and the second original position determining unit 8223.
The repetition period that second numbering receiving unit 812 includes for receiving the above-mentioned common modifications cycle numbers accordingly.
Second relevant information acquiring unit 8221 is used to obtain the length information in above-mentioned common modifications cycle, the length information in related to current user equipment MBMS control information corresponding specific modification cycle and the first deviant of the original position of the original position relative to the above-mentioned common modifications cycle in above-mentioned specific modification cycle.
Second original position determining unit 8223 is used to, when the mould of above-mentioned numbering and the length in specific modification cycle is equal to the first deviant, be defined as to the original position in next specific modification cycle the above-mentioned numbering corresponding repetition period.
Accordingly, control information acquisition module 83 is additionally operable to the original position in the next specific modification cycle related to current user equipment, receives the control information transmitted on MCCH.
Determined with the second numbering receiving unit, the second relevant information acquiring unit, the second original position single The realization principle of the user equipment of function such as member and control information acquisition module, refers to the record on UE in Fig. 4 a correspondence embodiments, and no longer Redundant is stated.
In corresponding cyclical information of above-mentioned modification cycle radio frame number cycle period corresponding for the modification cycle, numbering receiving module 81 includes：3rd numbering receiving unit 81 3;Accordingly, border determining module 82 may include：Third phase closes the original position determining unit 8233 of information acquisition unit 82 31 and the 3rd.
3rd numbering receiving unit 81 3 is numbered accordingly for receiving corresponding radio frame number cycle period of above-mentioned modification cycle.
Third phase closes the second deviant of length information and the original position in above-mentioned modification cycle relative to first radio frame number position in first radio frame number cycle period that information acquisition unit 8231 is used to obtain the above-mentioned modification cycle.
3rd original position determining unit 8233 is used to, when first radio frame number of first radio frame number cycle period is to the time span between current radio frame number, with changing the mould of Cycle Length equal to the second deviant, the corresponding radio frames of current frame number be defined as to the original position in next modification cycle.
Accordingly, control information acquisition module 83 is additionally operable to the original position in next modification cycle, receives the control information transmitted on MCCH.
The realization principle of the user equipment of the functions such as information acquisition unit, the 3rd original position determining unit and control information acquisition module is closed with the 3rd numbering receiving unit, third phase, the record on UE in Fig. 5 correspondence embodiments is referred to, no longer Redundant is stated.
The MBMS cyclical informations for changing the cycle are numbered by network side for the present embodiment, so that UE can be according to the accurate border for changing the cycle for determining random length of corresponding numbering, improve transmission and obtain the flexibility of MBMS control information, so as to be conducive to UE to obtain newest MBMS control information in time on the border in modification cycle.
The communication system architecture schematic diagram that Fig. 9 provides for ninth embodiment of the invention.As shown in figure 9, the present embodiment communication system includes：Base station 91 and user equipment 92.
Base station 91 is used to be multicast service（MBMS the modification cycle corresponding corresponding numbering of cyclical information generation of control information)；Send above-mentioned numbering. User equipment 92 is used for the numbering for receiving the transmission of base station 91；The border in above-mentioned modification cycle is determined according to the numbering；The corresponding control information of above-mentioned MBMS is obtained on the border in above-mentioned modification cycle.
The MBMS cyclical informations for changing the cycle are numbered by base station for the present embodiment, so that UE can be according to the accurate border for changing the cycle for determining random length of corresponding numbering, improve transmission and obtain the flexibility of MBMS control information, so as to be conducive to UE to obtain newest MBMS control information in time on the border in modification cycle.The record that functional structure can be found in Fig. 7 correspondence embodiments is refined on base station in the present embodiment, the record that functional structure can be found in Fig. 8 correspondence embodiments is refined on user equipment；The method that base station interacts transmission and the acquisition of realizing MBMS control information with user equipment, refers to the record of Fig. 3 a to Fig. 6 correspondence embodiments, and no longer Redundant is stated.
One of ordinary skill in the art will appreciate that：Accompanying drawing is necessary to module or flow in the schematic diagram of one embodiment, accompanying drawing not necessarily implements the present invention.
One of ordinary skill in the art will appreciate that：The module in device in embodiment can be distributed in the device of embodiment according to embodiment description, can also be carried out respective change and be disposed other than in one or more devices of the present embodiment.The module of above-described embodiment can be merged into a module, can also be further split into multiple submodule.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can be completed by the related hardware of programmed instruction, foregoing program can be stored in a computer read/write memory medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage medium includes：R0M, RAM, magnetic disc or CD etc. are various can be with the medium of store program codes.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although the present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It can still modify to the technical scheme described in previous embodiment, or carry out equivalent substitution to which part technical characteristic；And these modifications or replacement, the essence of appropriate technical solution is departed from the spirit and scope of technical scheme of the embodiment of the present invention.

Claims (1)

  1. Claims
    1st, a kind of acquisition methods of multimedia broadcast multicast service control information, it is characterised in that including：Receive the numbering of the modification cycle corresponding cyclical information of multicast service MBMS control information；The border in the modification cycle is determined according to the numbering；
    The corresponding control information of the MBMS is obtained on the border in the modification cycle.
    2nd, the acquisition methods of multimedia broadcast multicast service control information according to claim 1, it is characterised in that modification cycle, corresponding cyclical information was：Repetition period or the modification cycle corresponding radio frame number cycle period that the modification cycle includes；Wherein, the modification cycle is specific modification cycle or common modifications cycle.
    3rd, the acquisition methods of multimedia broadcast multicast service control information according to claim 2, it is characterized in that, it is described to determine that the border in the modification cycle includes according to the numbering during repetition period that modification cycle corresponding cyclical information included for the specific modification cycle：
    Obtain the length information and the length information of the repetition period in the specific modification cycle；According to the numbering, the length information and the length information of the repetition period in the specific modification cycle, the time difference of the original position apart from the current transmission moment in next specific modification cycle is calculated；
    According to the time difference, the original position in next specific modification cycle is determined.
    4th, the acquisition methods of multimedia broadcast multicast service control information according to claim 2, it is characterized in that, it is described to determine that the border in the modification cycle includes according to the numbering during repetition period that modification cycle corresponding cyclical information included for the common modifications cycle：
    Obtain the length information, the length information in related to current user equipment MBMS control information corresponding specific modification cycle and the first deviant of the original position of the original position relative to the common modifications cycle in the specific modification cycle in the common modifications cycle；
    If the mould of the numbering and the length in the specific modification cycle is equal to first deviant, be defined as to the original position in next specific modification cycle the numbering corresponding repetition period.
    5th, the acquisition methods of multimedia broadcast multicast service control information according to claim 2, it is characterised in that ^ fathers ι change cycle corresponding cyclical information and change cycle corresponding radio frame number cycle period for ^ fathers ι When, it is described to determine that the border in the modification cycle includes according to the numbering：
    Obtain second deviant of length information and the original position in the modification cycle relative to first radio frame number position in first radio frame number cycle period in the modification cycle；
    If first radio frame number of first radio frame number cycle period is equal to second deviant to the time span between current radio frame number, with the mould of the modification Cycle Length, the corresponding radio frames of the current radio frame number are defined as the original position that next ^ ' fathers change the cycle.
    6th, according to the acquisition methods of any described multimedia broadcast multicast service control information of claim 35, it is characterised in that obtain the corresponding control information of the MBMS on the border in the modification cycle, including：In the original position in next specific modification cycle, the control information transmitted on MCCH is received.7th, a kind of transmission method of multimedia broadcast multicast service control information, it is characterised in that including：For the modification cycle corresponding corresponding numbering of cyclical information generation of multicast service MBMS control information；
    The numbering, the border for determining the modification cycle are sent to user equipment.
    8th, the transmission method of multimedia broadcast multicast service control information according to claim 7, it is characterised in that modification cycle, corresponding cyclical information was：Repetition period or the modification cycle corresponding radio frame number cycle period that the modification cycle includes；Wherein, the modification cycle is specific modification cycle or common modifications cycle.
    9th, the transmission method of multimedia broadcast multicast service control information according to claim 8, it is characterised in that for the modification cycle corresponding corresponding numbering of cyclical information generation, the numbering is sent to user equipment, including：
    The number for the repetition period that the specific modification cycle includes is determined, is the corresponding numbering of repetition period generation included in the specific modification cycle, the repetition period that sending the specific modification cycle to the user equipment includes numbers accordingly；Or
    The number for the repetition period that the common modifications cycle includes is determined, is the corresponding numbering of repetition period generation included in the common modifications cycle, the repetition period that sending the common modifications cycle to the user equipment includes numbers accordingly；Or Determine the number of the modification cycle corresponding radio frame number cycle period, for the modification cycle corresponding corresponding numbering of radio frame number cycle period generation, send the modification cycle corresponding radio frame number cycle period to the user equipment and number accordingly.
    10th, the transmission method of multimedia broadcast multicast service control information according to claim 9, it is characterised in that
    If the repetition period that sending the specific modification cycle includes numbers accordingly, in addition to：The length information for each repetition period that the length information and the specific modification cycle for sending the specific modification cycle include；
    If the repetition period that sending the common modifications cycle includes numbers accordingly, in addition to：Send the first deviant of the length information, the length information in each MBMS control information corresponding specific modification cycle and the original position of the original position relative to the common modifications cycle in each specific modification cycle in the common modifications cycle；
    If the modification cycle corresponding radio frame number cycle period is sent to number accordingly, in addition to：The length information and the original position in the modification cycle in the modification cycle are sent relative to the second deviant between first radio frame number position in first radio frame number cycle period.
    11st, a kind of user equipment, it is characterised in that including：
    Numbering receiving module, the numbering of the modification cycle corresponding cyclical information for receiving multicast service MBMS control information；
    Border determining module, the border for determining the modification cycle according to the numbering；
    Control information acquisition module, for obtaining the corresponding control information of the MBMS on the border in the modification cycle.
    12nd, user equipment according to claim 11, it is characterised in that when the modification cycle corresponding cyclical information is the repetition period that the specific modification cycle includes,
    The numbering receiving module includes：First numbering receiving unit, the repetition period included for receiving the specific modification cycle numbers accordingly；
    The border determining module includes： First relevant information acquiring unit, length information and the length information of the repetition period for obtaining the specific modification cycle；
    First computing unit, for according to the numbering, the length information and the length information of the repetition period in the specific modification cycle, calculating the time difference of the original position apart from the current transmission moment in next specific modification cycle；
    First start bit puts determining unit, for according to the time difference, determining the original position in next specific modification cycle.
    13, user equipment according to claim 11, it is characterised in that when the modification cycle corresponding cyclical information is the repetition period that the common modifications cycle includes,
    The numbering receiving module includes：Second numbering receiving unit, the repetition period included for receiving the common modifications cycle numbers accordingly；
    The border determining module includes：
    Second relevant information acquiring unit, length information, the length information in related to current user equipment MBMS control information corresponding specific modification cycle and the first deviant of the original position of the original position relative to the common modifications cycle in the specific modification cycle for obtaining the common modifications cycle；
    Second original position determining unit, for when the mould of the numbering and the length in the specific modification cycle is equal to first deviant, to be defined as to the original position in next specific modification cycle the numbering corresponding repetition period.
    14th, user equipment according to claim 11, it is characterised in that when the modification cycle corresponding cyclical information is that ^ fathers ι change cycle corresponding radio frame number cycle period,
    The numbering receiving module includes：3rd numbering receiving unit, is numbered accordingly for receiving the modification cycle corresponding radio frame number cycle period；
    The border determining module includes：
    Third phase closes information acquisition unit, for obtaining the length information and the original position in the modification cycle in the modification cycle relative to first radio frame number institute in first radio frame number cycle period The second deviant in position；
    3rd original position determining unit, for first radio frame number in first radio frame number cycle period to the time span between current radio frame number, when being equal to second deviant with the mould of the modification Cycle Length, the corresponding radio frames of the current radio frame number are defined as to the original position in next modification cycle.
    15th, any user equipment according to claim 12 14, it is characterised in that the control information acquisition module is additionally operable to the original position in next specific modification cycle, receives the control information transmitted on MCCH.
    16th, a kind of base station, it is characterised in that including：
    Numbering generation module, the modification cycle corresponding corresponding numbering of cyclical information generation for the control information for multicast service MBMS；
    Sending module, for sending the numbering, the border for determining the modification cycle to user equipment.
    17th, base station according to claim 16, it is characterised in that when the modification cycle corresponding cyclical information is the repetition period that the specific modification cycle includes,
    The numbering generation module includes：First numbering generation unit, the number for determining repetition period that the specific modification cycle includes, is the corresponding numbering of repetition period generation included in the specific modification cycle；
    The sending module includes：First transmitting element, the repetition period included for sending the specific modification cycle to the user equipment numbers accordingly.
    18th, base station according to claim 17, it is characterised in that the length information for each repetition period that first transmitting element is additionally operable to send the length information in the specific modification cycle and the specific modification cycle includes.
    19th, base station according to claim 16, it is characterised in that when the modification cycle corresponding cyclical information is the repetition period that the common modifications cycle includes,
    The numbering generation module includes：Second numbering generation unit, for determining the common modifications week The number for the repetition period that phase includes, is the corresponding numbering of repetition period generation included in the common modifications cycle；
    The sending module includes：Second transmitting element, the repetition period included for sending the common modifications cycle to the user equipment numbers accordingly.
    20th, base station according to claim 19, characterized in that, second transmitting element is additionally operable to send the first deviant of original position of the original position relative to the common modifications cycle of the length information in the common modifications cycle, the length information in each MBMS control information corresponding specific modification cycle and each specific modification cycle.
    21st, base station according to claim 16, it is characterised in that when the modification cycle corresponding cyclical information is that ^ fathers ι change cycle corresponding radio frame number cycle period,
    The numbering generation module includes：3rd numbering generation unit, the number for determining the modification cycle corresponding radio frame number cycle period is the modification cycle corresponding corresponding numbering of radio frame number cycle period generation；
    The sending module includes：3rd transmitting element, is numbered accordingly for sending the modification cycle corresponding radio frame number cycle period to the user equipment.
    22nd, base station according to claim 21, characterized in that, the 3rd transmitting element is additionally operable to send the length information in the modification cycle and the original position in the modification cycle relative to the second deviant between first radio frame number position in first radio frame number cycle period.
    23rd, a kind of communication system, it is characterised in that including：
    Base station, the modification cycle corresponding corresponding numbering of cyclical information generation for the control information for multicast service MBMS, and send the numbering；And
    User equipment, for receiving the numbering that the base station is sent；The border in the modification cycle is determined according to the numbering；The corresponding control information of the MBMS is obtained on the border in the modification cycle.
CN200980123688.XA 2009-04-27 2009-04-27 Transmitting and obtaining method, apparatus and system for multimedia broadcast multicast service (mbms) control information Active CN102138351B (en)

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