CN101873645B - The method, system and device of informing MBSFN subframe configuration - Google Patents
The method, system and device of informing MBSFN subframe configuration Download PDFInfo
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- CN101873645B CN101873645B CN200910083060.3A CN200910083060A CN101873645B CN 101873645 B CN101873645 B CN 101873645B CN 200910083060 A CN200910083060 A CN 200910083060A CN 101873645 B CN101873645 B CN 101873645B
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Abstract
The present invention proposes the method for a kind of informing MBSFN subframe configuration, comprises the following steps: adjacent cell list is sent to multi-media broadcasting service MBMS coordination entity MCE in M2 interface message by evolution base station eNB；Described MCE configures the MBSFN sub-frame configuration with described eNB and compares the MBSFN sub-frame that each adjacent cell in described adjacent cell list is corresponding, and comparison result is sent to described eNB.By the present invention, Serving cell can be made to may know that the MBSFN sub-frame configuring condition of adjacent area, and according to the rational utilization of resources of configuration mode income, thus effectively reduce the interference of minizone, and improve power system capacity and efficiency.
Description
Technical field
The present invention relates to communication technical field, the side configured particularly to a kind of informing MBSFN subframe
Method, system and device.
Background technology
At present, FDD (Frequency in LTE (Long Term Evolution, Long Term Evolution) system
Division Duplex, FDD) and the frame of TDD (Time Division Duplex, time division duplex)
Structure all uses subframe (subframe) structure of 1ms, wherein, as it is shown in figure 1, be prior art
The frame assumption diagram of LTE-TDD, half radio frames (half-of each TDD radio frames (One radio frame)
Frame) being made up of 5 subframes, each subframe is 1ms, and each subframe is by the Slot structure of two 0.5ms
Become.
Along with the day of frequency resource is becoming tight, SFN (Single Frequency Network, SFN) nothing
Opinion is all to start in DTTB field or in mobile communication technology by more and more
Attention.So-called SFN, if i.e. in certain geographic area cadre's transmitter simultaneously same
Same signal is launched, to realize the reliable covering to this region in frequency range.At MBMS (Multimedia
Broadcast and Multicast Service, multi-media broadcasting service) if in the SFN that realizes be i.e.
Identical signal is launched in butt station simultaneously on a same frequency.Wherein, MBSFN is divided into two
Rank: Radio Frame (radio frames) and Sub Frame (subframe).
Prior art has the drawback that, owing to eNB (evolution base station) cannot learn neighbor cell
MBSFN sub-frame configuration mode, therefore when neighbor cell is due to the community needing to dispose of coverage
During radius difference, the configuration of the MBSFN sub-frame of this neighbor cell it is possible to MBSFN of eNB
Frame configuration differs, thus causes the interference between neighbor cell base station, affects power system capacity and business
Quality.Further, since eNB (evolution base station) cannot learn that the MBSFN sub-frame of neighbor cell is joined
Put mode, the most just cannot notify to UE (User Equipment, subscriber equipment), thus shadow
Ring the cell measurement of UE.
Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency, particularly solves prior art
Middle eNB cannot learn the defect that adjacent cell MBSFN sub-frame configures.
For reaching above-mentioned purpose, one aspect of the present invention proposes the side of a kind of informing MBSFN subframe configuration
Method, comprises the following steps: adjacent cell list is sent in M2 interface message by evolution base station eNB
MCE (MBMS Coordination Entity, multi-media broadcasting service MBMS coordination entity)；Described
The MBSFN sub-frame that each adjacent cell in described adjacent cell list is corresponding is configured and described eNB by MCE
MBSFN sub-frame configuration compare, and comparison result is sent to described eNB.
Another aspect of the present invention also proposes the system of a kind of informing MBSFN subframe configuration, including eNB
And MCE, described eNB, for adjacent cell list being sent to described MCE in M2 interface message；
Described MCE, for the MBSFN sub-frame configuration corresponding to each adjacent cell in described adjacent cell list
Configure with the MBSFN sub-frame of described eNB and compare, and comparison result is sent to described eNB.
Further aspect of the present invention also proposes a kind of eNB, including adjacent cell list sending module and reception mould
Block, described adjacent cell list sending module, for sending adjacent cell list in M2 interface message
To MCE；Described receiver module, for receiving the comparison result that described MCE sends, described comparison
Result is by MBSFN sub-frame configuration corresponding to each adjacent cell in described adjacent cell list for described MCE
Generation of comparing is configured with the MBSFN sub-frame of described eNB.
Further aspect of the present invention also proposes a kind of MCE, including adjacent cell list receiver module and ratio
To sending module, described adjacent cell list receiver module, it is used for receiving eNB and sends out in M2 interface message
The adjacent cell list sent；Described comparison sending module, for little to each neighbour in described adjacent cell list
MBSFN sub-frame configuration corresponding to district is compared with the configuration of the MBSFN sub-frame of described eNB, and
Comparison result is sent to described eNB.
Further aspect of the present invention also proposes the method for a kind of informing MBSFN subframe configuration, including following
Adjacent cell list is sent to multi-media broadcasting service MBMS in M2 interface message by step: eNB
Coordination entity MCE；Described MCE is by MBSFN corresponding for each adjacent cell in described adjacent cell list
Sub-frame configuration is sent to described eNB.
The present invention also proposes a kind of method reducing presence of intercell interference, comprises the following steps: eNB is at M2
Adjacent cell list is sent to MCE by interface message；Described MCE is by each in described adjacent cell list
Individual adjacent cell corresponding MBSFN sub-frame configuration be sent to described eNB；Described eNB is according to adjacent cell
Corresponding MBSFN sub-frame configuration is scheduling.
By the present invention, Serving cell can be made to may know that the MBSFN sub-frame configuring condition of adjacent area, and
According to the rational utilization of resources of configuration mode income, thus effectively reduce the interference of minizone, and improve
Power system capacity and efficiency.
Aspect and advantage that the present invention adds will part be given in the following description, and part will be from following
Description in become obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Present invention aspect that is above-mentioned and/or that add and advantage are from retouching embodiment below in conjunction with the accompanying drawings
Will be apparent from easy to understand in stating, wherein:
Fig. 1 is the frame assumption diagram of prior art LTE-TDD；
Fig. 2 is the method flow diagram of the informing MBSFN subframe configuration of the embodiment of the present invention；
Fig. 3 is the system construction drawing of the informing MBSFN subframe configuration of the embodiment of the present invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, its
In the most same or similar label represent same or similar element or there is same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
The present invention essentially consist in by eNB and MCE between mutual so that eNB knows adjacent area
MBSFN sub-frame configuring condition, and according to the rational utilization of resources of configuration mode income, thus effectively drop
The interference of low minizone, and improve power system capacity and efficiency.
As in figure 2 it is shown, be the method flow diagram of the informing MBSFN subframe configuration of the embodiment of the present invention,
Comprise the following steps:
Step S201, when cell initial is set up, eNB obtains the adjacent cell list of oneself.
Step S202, adjacent cell list is sent to MCE in M2 interface message by eNB.Wherein make
For one embodiment of the present of invention, specifying information form is as shown in the table:
| Information type | Information describes |
| Base station IDs | The mark of base station |
| Serving cell list | Comprise all Serving cells of base station |
| ＞ service cell information | The mark of community |
| ＞ neighboring BS information | |
| ＞ ＞ ECGI | Unique mark of adjacent cell |
Step S203, the MBSFN sub-frame configuration that MCE is corresponding to each adjacent cell in adjacent cell list
Configure with the MBSFN sub-frame of eNB and compare, and comparison result is sent to eNB.Specifically,
MCE, according to unique mark of adjacent cell, finds corresponding MBSFN sub-frame configuration information, then and
The configuration of Serving cell compares, and finally by response message, comparison result is sent to eNB.Make
For a specific embodiment of the present invention, comparison result is sent to eNB and specifically can use following information
Form:
| Information type | Information describes |
| Base station IDs | The mark of base station |
| Serving cell list | Comprise all Serving cells of base station |
| ＞ service cell information | The mark of community |
| The broadcast message configuration of ＞ adjacent area | BIT STRING(SIZE(2)) |
Wherein, adjacent area broadcast message is configured to two bits, and implication is:
00: represent that not every adjacent cell all uses the MBSFN sub-frame identical with Serving cell to join
Put.
10: the MBSFN of all adjacent cells configuration all uses identical with Serving cell or services
The subset of community.
01: all of adjacent cell does not all have MBSFN sub-frame.
Step S204, eNB broadcasts comparison result in system message, as in system message
SIB3/SIB5 broadcasts this comparison result so that UE can carry out cell measurement according to this comparing result.
As an alternative embodiment of the present invention, MCE also needs to preserve the adjacent cell row that eNB sends
Table, and during the MBSFN sub-frame configuration variation of the adjacent cell in adjacent cell list, regenerate
Comparison result is sent to eNB.
As the preferred embodiments of the present invention, the MBSFN sub-frame corresponding in adjacent cell configures and eNB
MBSFN sub-frame configuration inconsistent time, MCE is by MBSFN corresponding for adjacent cell in adjacent cell list
Sub-frame configuration is sent to eNB.Or, MCE does not compares, directly by adjacent little in adjacent cell list
District corresponding MBSFN sub-frame configuration be sent to eNB.More specifically, can be by following information lattice
Formula is sent to eNB.
| Information type | Information describes |
| Base station IDs | The mark of base station |
| Serving cell list | Comprise all Serving cells of base station |
| ＞ service cell information | The mark of community |
| ＞ neighboring BS information | Optionally |
| ＞ ＞ ECGI | Adjacent cell identifies |
| The ＞ ＞ MBSFN sub-frame method of salary distribution | The MBSFN sub-frame method of salary distribution |
So eNB just can be scheduling according to the MBSFN sub-frame configuration that adjacent cell is corresponding, thus
The interference of minizone be can effectively reduce, and power system capacity and efficiency improved.Such as, corresponding eNB
Around obtaining after adjacent area MBSFN sub-frame concrete configuration mode, according to the configuration mode of each community,
Utilizing Resource Pattern can be defined, owing to the MBSFN sub-frame of adjacent cell can become the most dry to this small-sized photograph
Disturb, therefore according to the adjacent cell MBSFN sub-frame configuring condition recognized, avoid when scheduling as far as possible
Adjacent cell is this community subframe of correspondence of MBSFN sub-frame.Such as, if adjacent cell configures MBSFN
Subframe is 1,3,5, then and this eNB tries one's best use 2,4,6 subframe when scheduling.And be not able to
Then use higher coding protection when using this subframe as far as possible, such as changed into 1/3 coding by 2/3 coding,
Relatively low modulation levels, is such as reduced to QPSK, UE near for chosen distance eNB by 16QAM and carries out
Scheduling, whether such as eNB can confirm UE according to parameters such as RSRP or RSRQ that UE reports
Distance eNB is nearer.Equally, after eNB obtains the configuration of adjacent cell MBSFN sub-frame, it is possible to will
Adjacent cell MBSFN sub-frame configuration broadcast is to UE.
As it is shown on figure 3, be the system construction drawing of the informing MBSFN subframe configuration of the embodiment of the present invention.
This system includes eNB 100 and MCE 200.ENB 100 is for little by neighbour in M2 interface message
District's list is sent to MCE 200.MCE 200 is for corresponding to each adjacent cell in adjacent cell list
The MBSFN sub-frame configuration that MBSFN sub-frame configures with eNB 100 is compared, and by comparison result
It is sent to eNB 100.
Wherein, eNB 100 includes adjacent cell list sending module 110 and receiver module 120.Adjacent cell
List sending module 110 for being sent to MCE 200 in M2 interface message by adjacent cell list.
Receiver module 120 is for receiving the comparison result that MCE 200 sends, and comparison result is by MCE 200
The MBSFN sub-frame configuration corresponding to each adjacent cell in adjacent cell list and the MBSFN of eNB 100
Sub-frame configuration is compared generation.
Wherein, eNB 100 also includes broadcast module 130, for the ratio received by receiver module 120
Result is broadcasted in system message.
Wherein, as one embodiment of the present of invention, receiver module 120 is additionally operable to receive MCE 200
The MBSFN sub-frame configuration that in the described adjacent cell list sent, adjacent cell is corresponding.Wherein, eNB 100
Also include scheduler module 140, be scheduling for the MBSFN sub-frame configuration corresponding according to adjacent cell.
Wherein, MCE 200 includes adjacent cell list receiver module 210 and comparison sending module 220.
Adjacent cell list receiver module 210 is for receiving the adjacent cell that eNB 100 sends in M2 interface message
List.Comparison sending module 220 is for the MBSFN corresponding to each adjacent cell in adjacent cell list
The MBSFN sub-frame of sub-frame configuration and eNB 100 configures compares, and is sent to by comparison result
eNB 100。
Wherein, MCE 200 also includes preserving module 230 and judge module 240.Preserve module 230
For preserving the adjacent cell list that eNB 100 sends.Judge module 240 is used for judging to preserve module 230
Whether the MBSFN sub-frame configuration of the adjacent cell in the adjacent cell list preserved changes.Comparison is sent out
When sending the MBSFN sub-frame configuration variation of the adjacent cell that module 220 is additionally operable in adjacent cell list,
Regenerate comparison result and be sent to eNB 100.
Wherein, MCE 200 also includes sending module 250, for as MBSFN corresponding to adjacent cell
When sub-frame configuration is inconsistent with the configuration of the MBSFN sub-frame of eNB 100, by adjacent little in adjacent cell list
District corresponding MBSFN sub-frame configuration be sent to eNB 100.
By the present invention, Serving cell can be made to may know that the MBSFN sub-frame configuring condition of adjacent area, and
According to the rational utilization of resources of configuration mode income, thus effectively reduce the interference of minizone, and improve
Power system capacity and efficiency.
Although an embodiment of the present invention has been shown and described, for those of ordinary skill in the art
For, it is possible to understand that without departing from the principles and spirit of the present invention can be to these embodiments
Carry out multiple change, revise, replace and modification, the scope of the present invention by claims and etc.
With limiting.
Claims (10)
1. the method for an informing MBSFN subframe configuration, it is characterised in that comprise the following steps:
Adjacent cell list is sent to multi-media broadcasting service in M2 interface message by evolution base station eNB
MBMS coordination entity MCE；
Described MCE to each adjacent cell in described adjacent cell list corresponding MBSFN sub-frame configuration with
The MBSFN sub-frame configuration of described eNB is compared, and comparison result is sent to described eNB,
And,
Described MCE is sub with the MBSFN of described eNB in the MBSFN sub-frame configuration that adjacent cell is corresponding
When frame configuration is inconsistent, MBSFN sub-frame configuration corresponding for adjacent cell in described adjacent cell list is sent out
Give described eNB.
2. the method for informing MBSFN subframe configuration as claimed in claim 1, it is characterised in that
Described comparison result is sent to described eNB after, also include:
Described eNB broadcasts described comparison result in system message.
3. the method for informing MBSFN subframe configuration as claimed in claim 1, it is characterised in that
Also include:
Described MCE preserves the adjacent cell list that described eNB sends, and in described adjacent cell list
The MBSFN sub-frame configuration variation of adjacent cell time, regenerate comparison result and be sent to described eNB.
4. the method for informing MBSFN subframe configuration as claimed in claim 1, it is characterised in that
Also include:
Described eNB is scheduling according to the MBSFN sub-frame configuration that adjacent cell is corresponding.
5. the system of an informing MBSFN subframe configuration, it is characterised in that include eNB and MCE,
Described eNB, for being sent to described MCE in M2 interface message by adjacent cell list；
Described MCE, for the MBSFN sub-frame corresponding to each adjacent cell in described adjacent cell list
Configure the configuration of the MBSFN sub-frame with described eNB to compare, and comparison result is sent to described
eNB；And, the MBSFN sub-frame configuration corresponding in adjacent cell is sub with the MBSFN of described eNB
When frame configuration is inconsistent, described MCE is by MBSFN corresponding for adjacent cell in described adjacent cell list
Frame configuration is sent to described eNB.
6. an eNB, it is characterised in that include adjacent cell list sending module and receiver module,
Described adjacent cell list sending module, for sending adjacent cell list in M2 interface message
To MCE；
Described receiver module, for receive described MCE send comparison result, described comparison result by
The MBSFN sub-frame that each adjacent cell in described adjacent cell list is corresponding is configured with described by described MCE
The MBSFN sub-frame of eNB configures generation of comparing；And,
Configure the MBSFN sub-frame with described eNB in the MBSFN sub-frame that adjacent cell is corresponding to configure not
Time consistent, receive MBSFN that in the described adjacent cell list that described MCE sends, adjacent cell is corresponding
Frame configures.
7. eNB as claimed in claim 6, it is characterised in that also include broadcast module, being used for will
The comparison result that described receiver module receives is broadcasted in system message.
8. eNB as claimed in claim 6, it is characterised in that also include scheduler module, for root
The MBSFN sub-frame configuration corresponding according to adjacent cell is scheduling.
9. a MCE, it is characterised in that include that adjacent cell list receiver module and comparison send mould
Block,
Described adjacent cell list receiver module is little for receiving the neighbour that eNB sends in M2 interface message
District's list；
Described comparison sending module, for corresponding to each adjacent cell in described adjacent cell list
The MBSFN sub-frame configuration that MBSFN sub-frame configures with described eNB is compared, and comparison is tied
Fruit is sent to described eNB, and, the MBSFN sub-frame corresponding in adjacent cell configures and described eNB
MBSFN sub-frame configuration inconsistent time, described MCE is by corresponding for adjacent cell in described adjacent cell list
MBSFN sub-frame configuration be sent to described eNB.
10. MCE as claimed in claim 9, it is characterised in that also include preserving module and judgement
Module,
Described preservation module, for preserving the adjacent cell list that described eNB sends；
Described judge module, for judging the adjacent cell in the adjacent cell list that described preservation module preserves
MBSFN sub-frame configuration whether change；
Described comparison sending module, the MBSFN of the adjacent cell being additionally operable in described adjacent cell list
During sub-frame configuration change, regenerate comparison result and be sent to described eNB.
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| CN102075866B (en) | 2011-01-19 | 2014-06-25 | 大唐移动通信设备有限公司 | Equipment switching method and device |
| CN102740383B (en) * | 2011-04-02 | 2016-03-16 | 上海贝尔股份有限公司 | Carry out the method and apparatus of cell reselection |
| PL2705685T3 (en) * | 2011-05-03 | 2015-09-30 | Ericsson Telefon Ab L M | Measurements performed by a wireless device |
| CN107205228B (en) * | 2016-03-18 | 2020-09-08 | 成都鼎桥通信技术有限公司 | Method, device and system for sending MBMS (multimedia broadcast multicast service) |
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| CN101159902A (en) * | 2007-10-26 | 2008-04-09 | 中兴通讯股份有限公司 | Time slot configuration method of carrier cell dedicated for multimedia broadcasting multicast system |
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| WO2008118064A2 (en) * | 2007-03-28 | 2008-10-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Measurement of cell-specific reference symbols in the presence of mbms single frequency network transmissions |
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| KR20080015983A (en) * | 2006-08-17 | 2008-02-21 | 삼성전자주식회사 | Apparatus and method for communicating frame data in broadband wireless access communication system |
| US7990912B2 (en) * | 2007-04-02 | 2011-08-02 | Go2Call.Com, Inc. | VoIP enabled femtocell with a USB transceiver station |
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| WO2008118064A2 (en) * | 2007-03-28 | 2008-10-02 | Telefonaktiebolaget Lm Ericsson (Publ) | Measurement of cell-specific reference symbols in the presence of mbms single frequency network transmissions |
| CN101159902A (en) * | 2007-10-26 | 2008-04-09 | 中兴通讯股份有限公司 | Time slot configuration method of carrier cell dedicated for multimedia broadcasting multicast system |
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