CN102769828B - A kind of multicast control channel information update method and system - Google Patents
A kind of multicast control channel information update method and system Download PDFInfo
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Abstract
The invention discloses a kind of multicast control channel information update method and system, it is ensured that in MBSFN region, associated base stations updates MCCH at same MCCH revises opportunity in cycle simultaneously.Described method includes: the multimedia broadcast-multicast service coordination entity (MCE) in administration Multicast Broadcast Single Frequency Network (MBSFN) region base station in described MBSFN region sends absolute counting value, and described absolute counting value is used for the renewal of the content notifying that described base station carries out MCCH corresponding to described MBSFN region in which multicast control channel (MCCH) the amendment cycle；After after often performing once to update or often performing repeatedly to update, described MCE starts simultaneously at described base station and again counts.The inventive method and system is used simply to be easily achieved, it can be ensured that MCE always uses the absolute value in enumerator to notify base station, it is to avoid to use the error that relative value may bring when notifying base station.
Description
Technical field
The present invention relates to mobile multimedia field, be specifically related to a kind of MBSFN region MCCH information more
New method and system.
Background technology
Along with the fast development of the Internet and popularizing of giant-screen multi-functional mobile phone, occur in that a large amount of mobile number
According to multimedia service and various high bandwidth multimedia service, such as: video conference, television broadcasting, video
Program request, video ads, online education, interactive game etc., not only meet what mobile subscriber constantly rose
Business demand, also brings new business growth point for mobile operator simultaneously.These move data multimedia
The multiple user of business need can receive identical data simultaneously, compared with general data service, has number
According to measuring the features such as big, persistent period length, delay sensitive.In order to effectively utilize mobile network resource, the
Third generation partnership project (3rd Generation Partnership Project, referred to as 3GPP) proposes
MBMS (Multimedia Broadcast Multicast Service, multimedia broadcast-multicast service), should
Business is a kind of technology transmitting data from a data source to multiple targets, it is achieved that network (includes core
Heart net and access network) resource share, improve the profit of Internet resources (especially air interface resource)
By rate.3GPP definition MBMS can not only realize plain text low rate message class multicast and
Broadcast, additionally it is possible to realize broadcast and the multicast of high-speed multimedia service, it is provided that multiple abundant video, sound
Frequency and multimedia service, this has complied with the trend of following mobile data development undoubtedly, for 3G (3rd
Generation, third generation digital communication) development provide better services prospect.
MBMS in LTE uses MBSFN (Multicast Broadcast Single
Frequency Network, Multicast Broadcast Single Frequency Network) mode is transmitted in MBSFN region.
Thus require that the base station that MBSFN region participates in sending all must keep synchronizing, so-called to realize
MBSFN mode is transmitted, it is thus achieved that higher gain.Base station in MBSFN region keeps same
Step has more method, such as GPS mechanism, is not specifically described, is to realize in a word
's.On the basis of associated base stations system-frame synchronizes, all base stations should send identical at synchronization
The information of data and chain of command is to UE (User Equipment, subscriber equipment), LTE (Long Term
Evolution, Long Term Evolution) in the chain of command signaling of the base station MBMS that is sent to UE be mainly carried on
In MCCH (Multicast Control Channel, multicast control channel), so in MBSFN region
Associated base stations send MCCH time need with resource with the time send identical MCCH content.At present
The mechanism that the transmitter of MCCH is made as using the repetition period to add the amendment cycle is transmitted, as shown in Figure 1.
One MCCH amendment cycle comprises several MCCH repetition period, and each MCCH revises the cycle
The information of MCCH several times of interior transmission is all identical, it is impossible to update, only in MCCH amendment week
MCCH information (if needing to update) could be updated after arriving opportunity phase.
In prior art, MCE (MBMS coordination entity) uses relative value to notify that the base station being correlated with exists
Which MCCH amendment cycle carries out the renewal of MCCH content, and such as MCE is at some MCCH
Send the relative value of instruction in the amendment cycle to base station, this relative value represents that distance MCE sends institute
Which carry out in MCCH in MCCH amendment cycle after stating the MCCH amendment cycle of instruction numerical value
The renewal held.Use relative value not only to realize fairly simple, and the span of relative value is permissible
Smaller (such signaling consumption is little), is suitable for the MCE of little scope and communicating of base station.But it is this
Using describing of relative value to there are some potential problems, need that MCE guarantees to send each time is described
Instruction numerical value to be received by all associated base stations in the same MCCH amendment cycle.Such as MCE sends out
It is to revise the cycle at the n-th MCCH when sending described instruction numerical value, but when base station receives described finger
The cycle may be revised at (n+1)th MCCH, then now base station can be with (n+1)th during registration value
The individual MCCH amendment cycle is that starting point calculates relative position, thus can make mistakes.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of multicast control channel information update method and is
System, it is ensured that in MBSFN region, associated base stations updates at same MCCH revises opportunity in cycle simultaneously
MCCH。
For solving above-mentioned technical problem, the invention provides a kind of multicast control channel information update method,
Including:
The multimedia broadcast-multicast service coordination entity in administration Multicast Broadcast Single Frequency Network (MBSFN) region
(MCE) base station in described MBSFN region sends absolute counting value, and described absolute counting value is used
In notifying that described base station carries out described MBSFN in which multicast control channel (MCCH) the amendment cycle
The renewal of the content of the MCCH that region is corresponding；
After after often performing once to update or often performing repeatedly to update, described MCE opens with described base station simultaneously
Starting weight New count.
Further, described MCE and base station start simultaneously at counting again and refer to, MCE and base station are simultaneously
Start the MCCH amendment cycle is counted.
Further, the scope of described counting is 0 to 255 for LTE system.
Further, described MCE base station in MBSFN region sends the opportunity of absolute counting value
Following condition should be met: carry out MCE described in the time gap of MCCH content update and send absolute counting
The time difference of the time of value is more than or equal to the propagation delay time of Zhong Ge base station, described MCE Yu MBSFN region
Maximum.
Further, described often perform once to update after or after often performing repeatedly to update, described MCE with
Described base station starts simultaneously at counting again and includes: revise week at the MCCH carrying out MCCH content update
When opportunity phase arrives, described MCE starts simultaneously at base station and again counts；Or, carrying out MCCH
The n-th MCCH after the MCCH amendment cycle arrival of content update revises at opportunity in cycle, described
MCE starts simultaneously at base station and again counts, and n is the positive integer more than or equal to 1.
For solving above-mentioned technical problem, present invention also offers a kind of multicast control channel information and update system,
Including first device, the second device and the 3rd device, wherein:
Described first device, is positioned at the multi-media broadcast in administration Multicast Broadcast Single Frequency Network (MBSFN) region
Broadcast multicast service coordination entity (MCE), send definitely for the base station in described MBSFN region
Count value, described absolute counting value is used for notifying that described base station carries out described in which in MCCH amendment cycle
The renewal of the content of the MCCH that MBSFN region is corresponding；
Described second device, is positioned at described MCE, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described 3rd device and again count；
Described 3rd device, is positioned at described base station, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described second device and again count.
Further, described in start simultaneously at again counting refer to, start simultaneously to MCCH amendment the cycle enter
Row counting.
Further, the scope of described counting is 0 to 255 for LTE system.
Further, the described first device base station in described MBSFN region in the following ways is sent out
Send absolute counting value: described first device is meeting the base in MBSFN region on opportunity of following condition
Stand and send absolute counting value: carry out MCE described in the time gap of MCCH content update and send definitely meter
When the time difference of the time of numerical value is more than or equal to the transmission of Zhong Ge base station, described MCE Yu MBSFN region
Prolong maximum.
Further, described often perform once to update after refer to: carrying out MCCH content update
MCCH revises when arriving opportunity in cycle；Described often perform repeatedly to update after refer to: carrying out MCCH
The n-th MCCH after the MCCH amendment cycle arrival of content update revised at opportunity in cycle, and n is
Positive integer more than or equal to 1.
Described in the embodiment of the present invention, method and system are simply easily achieved, it can be ensured that MCE always uses
Absolute value in enumerator notifies base station, it is to avoid use the mistake that relative value may bring when notifying base station
Difference.
Accompanying drawing explanation
Fig. 1 is that MCCH sends schematic diagram of mechanism；
Fig. 2 is embodiment of the present invention flow chart；
Fig. 3 is embodiment of the present invention schematic diagram.
Detailed description of the invention
The MCCH in one MBSFN region needs each community to update simultaneously, to ensure sending out of each community
The content sending MCCH is identical, sends realizing the MBSFN mode of MCCH.The present invention is MCE
Provide a method that with in the information updating mechanism in MCCH of the base station, to realize MCE control one
Information in the MCCH in this region of associated base stations synchronized update in individual MBSFN region, thus realize
The transmission of the MBSFN mode of MCCH.
The present invention program includes:
The MCE in administration MBSFN region base station in described MBSFN region sends absolute counting
Value, described absolute counting value is used for notifying that described base station carries out described in which in MCCH amendment cycle
The renewal of the content of the MCCH that MBSFN region is corresponding；
After often performing once to update or often perform repeatedly (fixed number of times) update after, described MCE and institute
State base station to start simultaneously at and again count.
Above-mentioned MCE and base station start simultaneously at counting again and refer to, it is right that MCE and base station start simultaneously at
The MCCH amendment cycle counts.Enumerator is generally used to count.MCCH is revised the cycle
Carrying out counting to refer to often experience at a MCCH amendment cycle boundary, enumerator adds 1.
When implementing, first configuration MCE and the respective enumerator in base station, and make MCE and base station
Enumerator there is identical counting starting point, such as by operator for the first time MCE and the meter of base station
Number starting point alignment, then the enumerator of MCE and base station each counts, and often one MCCH of experience repaiies
The time long counter changing the cycle adds 1.When needs update, MCE uses the numerical value of enumerator to notify base
Standing in which MCCH amendment cycle carries out the renewal of MCCH, and such as MCE needs base station at counting
Device numerical value is that the MCCH that 18 (assuming that described enumerator starts counting up from 0) is corresponding revises the cycle
Carry out MCCH content update, then MCE just sends 18 to base station.MCE and base station often experience once
Or after the MCCH of fixed number of times updates, there is the MCCH amendment week updated in MCE and base station reference
Phase about counter counts again, i.e. MCE and base station can about be scheduled on and carry out MCCH content update
N-th MCCH amendment opportunity in cycle when arriving or after arriving on MCCH amendment opportunity in cycle at
(n is the positive integer more than or equal to 1), MCE starts simultaneously at base station and again counts.Such as MCE
With base station MCCH amendment cycle (the MCCH amendment that i.e. this absolute counting value is corresponding occurring to update
Cycle) or the next MCCH amendment cycle in the MCCH amendment cycle updated occurs or occurs more
The a certain MCCH amendment cycle after the new MCCH amendment cycle is as new counting starting point, weight
Newly start the MCCH amendment cycle is counted.
Owing to MCCH and MBSFN region is one-to-one relationship.Described base station is described MCCH
The associated base stations of the described MCCH of transmission in corresponding MBSFN region.The transmission mechanism ginseng of MCCH
Examining Fig. 1, in LTE, MCCH has the amendment cycle, and the content in MCCH can only be revised at MCCH
Modifying at opportunity in cycle, each sends repeatedly MCCH in the MCCH amendment cycle, but not
Allow content update.
The count range of above-mentioned enumerator is 0 to 255 for LTE system.
Above-mentioned MCE base station in MBSFN region sends and should ensure that the opportunity of absolute counting value
Base station in MBSFN region has time enough to process, such as, carry out the time of MCCH content update
Distance MCE sends the time difference of the time of absolute counting value at least above the biography equal to MCE Yu each base station
Defeated time delay maximum, the preferably greater than or equal to processing delay of maximum transmitted time delay+base station.
Realize the system of said method, including first device, the second device and the 3rd device, wherein:
Described first device, is positioned at the MCE in administration MBSFN region, for described MBSFN district
Base station in territory sends absolute counting value, and described absolute counting value is used for notifying described base station is at which
The MCCH amendment cycle carries out the renewal of the content of MCCH corresponding to described MBSFN region；
Described second device, is positioned at described MCE, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described 3rd device and again count；
Described 3rd device, is positioned at described base station, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described second device and again count.
The above-mentioned counting again that starts simultaneously at refers to, starts simultaneously at and counts the MCCH amendment cycle.
Preferably, the first device base station in MBSFN region in the following ways sends absolute counting
Value: first device sends absolute counting meeting the base station in MBSFN region on opportunity of following condition
Value: carry out MCE described in the time gap of MCCH content update send absolute counting value time time
Between difference more than or equal to the propagation delay time maximum of Zhong Ge base station, described MCE Yu MBSFN region.
Preferably, refer to after often performing once to update: repair at the MCCH carrying out MCCH content update
Change when arriving opportunity in cycle；Refer to after often performing repeatedly to update: carrying out MCCH content update
The n-th MCCH after MCCH amendment cycle arrival revised at opportunity in cycle, and n is more than or equal to 1
Positive integer.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing
Embodiments of the invention are described in detail.It should be noted that in the case of not conflicting, this Shen
Embodiment in please and the feature in embodiment can mutual combination in any.
Embodiment 1
The enforcement scene of the present embodiment is, a certain MBSFN district under certain MCE management in LTE system
Content update in the MCCH in territory, as in figure 2 it is shown, comprise the following steps:
Step 201, the base station in a certain MBSFN region of MCE and its management carries out the most public
The alignment in MCCH amendment cycle, and make on the MCCH amendment cycle rate counter on MCE and base station
MCCH amendment cycle rate counter has identical start time；
The corresponding MCCH in each MBSFN region, belongs to the base station in certain MBSFN region and is responsible for sending out
Give the MCCH that this MBSFN region is corresponding.In LTE, MCCH is used to comprise MBMS phase
The control information closed.
MCCH is revised by MCCH amendment cycle rate counter on step 202, MCE and base station respectively
Cycle counts；
Assume that the MCCH that in the present embodiment, start time is corresponding revises the cycle at MCE and the counting of base station
Device is all designated as 0, the most often one MCCH amendment cycle (border) then MCE of experience and base station
Enumerator adds 1.
Step 203, when needs update MCCH, MCE base station in this MBSFN region sends
Absolute counting value, this absolute counting value is used for notifying that base station was carried out in which in MCCH amendment cycle
The renewal of the content of the MCCH that MBSFN region is corresponding；
While sending this absolute counting value or before sending this absolute counting value, MCE will
The content that MCCH updates is sent to base station.
For LTE system, MCE can pass through parameter MCCH update time (MCCH updates the time)
Absolute counting value is sent to base station, i.e. MCE is that MCCH needing to update MCCH content
Amendment cycle numerical value of correspondence in enumerator is configured to the value of parameter MCCH update time and sends
To base station.If parameter MCCH update time uses 8bits to be described in LTE system,
The count range that then enumerator is corresponding is 0 to 255.For carrying this parameter MCCH update time's
Message includes: MBMSCountingRequest (MBMS Counting requests) message and/or
MBSFNAreaConfiguration (configuration of MBSFN region) message.
Preferably, MCE configure MCCH update time value i.e. determine when base station updates time,
Also need to consider maximum delay, i.e. in the signaling arrival MBSFN region that MCE sends during all base stations
Maximum delay (the most also comprising the processing delay after base station receives MCE signaling), to guarantee
There is base station before the requirement that MCE specifies updates the MCCH amendment cycle arrival of content in MCCH
Time enough is had to process signaling.Maximum delay described here is relatively good to determine, because MBMS
Business is all the configuration that the long period is scheduling information in advance, so general time delay is not over 5
MCCH revises the cycle.
Step 204, after base station receives the absolute counting value that MCE sends, according to the MCCH of self
The counting of amendment cycle rate counter, when this absolute counting value arrives, carries out MCCH content update, i.e.
MCCH sends the content of renewal；
Such as Fig. 3, it is assumed that MCE sent certainly at the MCCH amendment cycle that counter values is 15 correspondences
It is scheduled on the content that the MCCH that counter values is 30 correspondences revises at opportunity in cycle in renewal MCCH,
It is to consider time delay completely.Concrete, MCE is configured to MCCH update time parameter value
30, and it is sent to base station, base station just can be informed in counter values after receiving this parameter be 30 correspondences
The MCCH amendment cycle update the content in MCCH.After the rolling counters forward of base station arrives 30,
Base station updates the content in MCCH within the corresponding MCCH amendment cycle.
Step 205, when the MCCH of agreement revises and arrives opportunity in cycle, MCE and base station are the most right
Respective MCCH amendment cycle rate counter is zeroed out, and returns step 202 and restarts counting.
Such as, MCE and base station are in updating MCCH after that MCCH amendment cycle of content the
The start time of counting is restarted on the border in one MCCH amendment cycle as enumerator, and enumerator is remembered
It is 0.The most original rolling counters forward numerical value be 31 MCCH amendment the cycle again opened by base station and MCE
Beginning to count postscript is 0, thus starts the new counting process for the MCCH amendment cycle.
Repeat the above steps carries out the renewal of MCCH, as long as ensureing that MCE and base station are updating each time
After content in complete MCCH, first MCCH revises and makes enumerator start weight from 0 at opportunity in cycle
New count.
For there is MCCH in the MCCH amendment cycle that in the present embodiment, agreement MCE and base station count again
After the MCCH amendment cycle of content update, first MCCH amendment cycle is only a preferred reality
Example, in reality, can be described after the 2nd, 3, at 4... MCCH amendment opportunity in cycle again
Counting, it is also possible to be to occur the MCCH the updated amendment cycle to begin to again count.Here need only to
Good agreement is carried out between MCE and base station.
One of ordinary skill in the art will appreciate that all or part of step in said method can pass through program
Instructing related hardware to complete, described program can be stored in computer-readable recording medium, as read-only
Memorizer, disk or CD etc..Alternatively, all or part of step of above-described embodiment can also use
One or more integrated circuits realize.Correspondingly, each module/unit in above-described embodiment can use
The form of hardware realizes, it would however also be possible to employ the form of software function module realizes.The present invention is not restricted to appoint
The combination of the hardware and software of what particular form.
Certainly, the present invention also can have other various embodiments, spiritual and essence without departing substantially from the present invention
In the case of, those of ordinary skill in the art work as can make various corresponding change and deformation according to the present invention,
But these change accordingly and deform the protection domain that all should belong to appended claims of the invention.
Claims (8)
1. a multicast control channel information update method, including:
The multimedia broadcast-multicast service coordination entity in administration Multicast Broadcast Single Frequency Network MBSFN region
MCE base station in described MBSFN region sends absolute counting value, and described absolute counting value is used for leading to
Know that described base station carries out described MBSFN region in which multicast control channel MCCH amendment cycle corresponding
The renewal of content of MCCH；
After after often performing once to update or often performing repeatedly to update, described MCE opens with described base station simultaneously
Starting weight New count；
Wherein, should expire the opportunity of described MCE transmission absolute counting value in base station in MBSFN region
Be enough to lower condition: carry out MCE described in the time gap of MCCH content update and send absolute counting value
The time difference of time is maximum more than or equal to the propagation delay time of Zhong Ge base station, described MCE Yu MBSFN region
Value.
2. the method for claim 1, it is characterised in that:
Described MCE and described base station start simultaneously at counting again and refer to, it is right that MCE and base station start simultaneously at
The MCCH amendment cycle counts.
3. method as claimed in claim 1 or 2, it is characterised in that:
The scope of described counting is 0 to 255 for LTE system.
4. method as claimed in claim 1 or 2, it is characterised in that:
Described often perform once to update after or after often performing repeatedly to update, described MCE and described base station with
Time start again to count to include:
Carry out MCCH content update MCCH revise opportunity in cycle arrive time, described MCE with
Described base station starts simultaneously at and again counts；Or
The n-th MCCH amendment after the MCCH carrying out MCCH content update revises cycle arrival
At opportunity in cycle, described MCE starts simultaneously at described base station and again counts, and n more than or equal to 1 is just
Integer.
5. multicast control channel information updates a system, including first device, the second device and the 3rd dress
Put, wherein:
Described first device, is positioned at the multimedia broadcasting in administration Multicast Broadcast Single Frequency Network MBSFN region
Multicast service coordination entity MCE, sends absolute counting value for the base station in described MBSFN region,
Described absolute counting value is used for notifying that described base station carries out described MBSFN in which in MCCH amendment cycle
The renewal of the content of the MCCH that region is corresponding；
Described second device, is positioned at described MCE, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described 3rd device and again count；
Described 3rd device, is positioned at described base station, is used for after often performing once to update or often performs repeatedly
After renewal, start simultaneously at described second device and again count；
Wherein, the described first device base station in described MBSFN region in the following ways sends absolutely
To count value:
Described first device sends definitely meeting the base station in MBSFN region on opportunity of following condition
Count value: carry out MCE described in the time gap of MCCH content update and send the time of absolute counting value
Time difference more than or equal to the propagation delay time maximum of Zhong Ge base station, described MCE Yu MBSFN region.
6. system as claimed in claim 5, it is characterised in that:
The described counting again that starts simultaneously at refers to, starts simultaneously at and counts the MCCH amendment cycle.
7. the system as described in claim 5 or 6, it is characterised in that:
The scope of described counting is 0 to 255 for LTE system.
8. the system as described in claim 5 or 6, it is characterised in that:
Described often perform once to update after refer to: carry out MCCH content update MCCH revise week
When opportunity phase arrives；
Described often perform repeatedly to update after refer to: carry out MCCH content update MCCH revise week
The n-th MCCH after phase arrival revised at opportunity in cycle, and n is the positive integer more than or equal to 1.
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| CN101242552A (en) * | 2007-02-05 | 2008-08-13 | 北京三星通信技术研究有限公司 | Data synchronization method |
| CN101931885A (en) * | 2009-06-19 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for informing updating of multimedia broadcast and mutlicast service control channel |
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| CN101242552A (en) * | 2007-02-05 | 2008-08-13 | 北京三星通信技术研究有限公司 | Data synchronization method |
| CN101931885A (en) * | 2009-06-19 | 2010-12-29 | 中兴通讯股份有限公司 | Method and system for informing updating of multimedia broadcast and mutlicast service control channel |
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