CN102006557B - Method and base station for avoiding disturbance to enhanced multicast broadcasting services (E-MBS) - Google Patents
Method and base station for avoiding disturbance to enhanced multicast broadcasting services (E-MBS) Download PDFInfo
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Abstract
The invention discloses a method and a base station for avoiding disturbance to enhanced multicast broadcasting services. The method comprises the following steps of: obtaining time-frequency resources used for sending the E-MBS of a macro cell base station by the base station when the E-M B S of the base station overlapped with the coverage area of the macro cell base station are closed; and not sending signaling and/or data on the time-frequency resources; or obtaining the time-frequency resources used for sending the E-MBS of the macro cell base station by the base station overlapped with the coverage area of the macro cell base station, selecting a modulation coding manner by the base station on the time-frequency resources according to a disturbance measurement result, and sending the singlecasting service signaling and/or data by adopting the selected modulation coding manner.
Description
Technical field
The present invention relates to wireless communication field, relate more specifically to a kind of method and base station of avoiding producing Multimedia Broadcast Multicast Service interference.
Background technology
Cordless communication network can provide the macrocell (Macrocell) of service for the public except having, in order to for making up the weakness that macro base station (Macro BS) in-door covering is not enough and throughput is lower, have also appeared as personal user or group user provide the picocell (Femtocell) of service, to provide more high-quality more high efficiency wireless access for the especially indoor user of low speed movement of mobile subscriber and the user of hot zones.User can oneself buy or install femtocell base station (Femto BS), easy-to-use.
MBS (Multicast Broadcast Service, Multimedia Broadcast Multicast Service) be a kind of technology transmitting data from a data source to multiple target, sharing of network (comprising core net and Access Network) resource can be realized, improve the utilance of Internet resources (especially air interface resource).Along with the development of the universal of the Internet and multimedia technology, the application of multimedia shared service is more and more wider, and data volume is also increasing simultaneously, carries out multicast efficiently and broadcast traffic transmissions also becomes unprecedentedly important for next generation mobile communication system.
In the macrocell of wireless communication system, Multimedia Broadcast Multicast Service is provided to be that industry is generally acknowledged and the service that can implement at present, in order to improve the coverage of Multimedia Broadcast Multicast Service, multiple synchronous macrocell can form a multiple cell Multimedia Broadcast Multicast Service (multi-BS MBS) coverage (MBS Zone), by sending identical data acquisition multiple cell macro diversity on same running time-frequency resource, make also can better be served the user of cell edge, simultaneously because now adjacent cell same (co-channel) frequently interference does not exist, therefore base station can by increasing transmitting power, thus the multicast broadcast services of higher rate is provided.For not obtaining base station synchronous very well with multiple cell Multimedia Broadcast Multicast Service coverage, multiple cell Multimedia Broadcast Multicast Service service (frame-level multi-BS MBS) that frame level can be provided synchronous, namely different districts sends identical Multimedia Broadcast Multicast Service in identical radio frames, although macro diversity can not be obtained, the continuity of Multimedia Broadcast Multicast Service can be ensured.
May there is a large amount of Home eNodeB in the overlay area of a macro base station, all types community all can join in multiple cell multicast broadcast services region, by the E-MBS service controller of network side or the resource of other network element United Dispatching Multimedia Broadcast Multicast Service.
But in emerging picocell, how to provide multicast broadcast services to be the current problem needing to inquire into and solve.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of avoid that the Multimedia Broadcast Multicast Service strengthened is produced the method for interference and base station.
For solving the problems of the technologies described above, the invention provides a kind of avoiding and, to the method for the interference that the Multimedia Broadcast Multicast Service strengthened produces, comprising:
With the enhanced multicast of the base station of macro cell base station covering area overlapping broadcast (E-MBS) business close time, described base station obtains described macro cell base station for sending the running time-frequency resource of E-MBS, and described running time-frequency resource does not send signaling and/or data.
Further, described macro cell base station adopts the grand diversity transmission mode of multiple cell to send E-MBS business, and described running time-frequency resource is the running time-frequency resource sending E-MBS business with multiple cell macro diversity mode.
Further, described base station in the following ways in one or both obtain described running time-frequency resource: the broadcast of the overlapping macro cell base station covered with it is monitored in described base station, obtains the running time-frequency resource position that this macro cell base station sends E-MBS business; Described base station obtains by network side the running time-frequency resource position that described macro cell base station sends E-MBS.
Further, the subframe position that oneself is not sent signaling and/or data by described base station is informed to terminal, and described terminal does not receive signaling and/or data in these subframe position.
Further, when E-MBS business is supported in described base station and terminal in current area does not have all terminals in request receiving E-MBS business or current area all to terminate to receive E-MBS business, E-MBS business is closed in described base station.
Further, when the terminal in described macrocell initiates handover request, and when described terminal indicates needs to keep receiving Multimedia Broadcast Multicast Service in handover request message, the E-MBS capability state of described macro cell base station and described this base station of base station negotiate; After negotiation, to in the switching command message of terminal response, carry the E-MBS capability state of all candidate target cells, described terminal at least selects a Target cell according to the E-MBS capability state of candidate target cells from candidate target cells, sends switch instruction to described macro cell base station.
Further, described E-MBS capability state comprises: support that E-MBS business and E-MBS business activate; Support E-MBS business and the closedown of E-MBS business; Do not support E-MBS business.
Further, described macro cell base station judges that the E-MBS capability state of the community own base station that described terminal is selected is as supporting E-MBS business and the closedown of E-MBS business, then indicate described base station activation E-MBS business.
Further, described terminal enters enable mode from idle pulley, select administration community, described base station to carry out network to re-access, by network side, described base station knows that terminal will receive E-MBS business, if the E-MBS capability state of described base station is for closing E-MBS business, then described base station activation E-MBS business.
Further, described base station is femtocell base station or the second macro cell base station.
For solving the problems of the technologies described above, the invention provides a kind of avoiding and, to the method for the interference that the Multimedia Broadcast Multicast Service strengthened produces, comprising:
Described macro cell base station to broadcast (E-MBS) business running time-frequency resource for sending enhanced multicast is obtained with the base station of macro cell base station covering area overlapping, modulation coding mode is selected according to interference measurement results in described base station on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
Further, described macro cell base station adopts the grand diversity transmission mode of multiple cell to send E-MBS business, and described running time-frequency resource is the running time-frequency resource sending E-MBS business with multiple cell macro diversity mode.
Further, described base station in the following ways in one or both obtain described running time-frequency resource: the broadcast of the overlapping macro cell base station covered with it is monitored in described base station, obtains the running time-frequency resource position that this macro cell base station sends E-MBS business; Described base station obtains the running time-frequency resource position sending E-MBS by network side.
Further, when the terminal in described macrocell initiates handover request, and when described terminal indicates needs to keep receiving Multimedia Broadcast Multicast Service in handover request message, the E-MBS capability state of described macro cell base station and described this base station of base station negotiate; After negotiation, to in the switching command message of terminal response, carry the E-MBS capability state of all candidate target cells, described terminal at least selects a Target cell according to the E-MBS capability state of candidate target cells from candidate target cells, sends switch instruction to described macro cell base station.
Further, described E-MBS capability state comprises: support that E-MBS business and E-MBS business activate; Support E-MBS business and the closedown of E-MBS business; Do not support E-MBS business.
Further, described macro cell base station judges that the E-MBS capability state of the community own base station that described terminal is selected is as supporting E-MBS business and the closedown of E-MBS business, then indicate described base station activation E-MBS business.
Further, described terminal enters enable mode from idle pulley, select administration community, described base station to carry out network to re-access, by network side, described base station knows that terminal will receive E-MBS business, if the E-MBS capability state of described base station is for closing E-MBS business, then described base station activation E-MBS business.
Further, described base station is femtocell base station or the second macro cell base station.
For solving the problems of the technologies described above, the invention provides a kind of avoiding and, to the base station of the interference that the Multimedia Broadcast Multicast Service strengthened produces, comprising judge module, source obtaining module and sending module, wherein:
Described judge module, for judge this base station enhanced multicast broadcast (E-MBS) business be closed condition time judge that whether the overlay area of this base station overlapping with macro cell base station overlay area further, if so, then described source obtaining module is called;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of E-MBS, sends to sending module by the running time-frequency resource obtained;
Described sending module, for stopping sending signaling and/or data on described running time-frequency resource.
For solving the problems of the technologies described above, the invention provides a kind of avoiding and, to the base station of the interference that the Multimedia Broadcast Multicast Service strengthened produces, comprising judge module and sending module, wherein:
Described judge module, for when judging the covering area overlapping of the overlay area of this base station and macro cell base station, calls described source obtaining module;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of enhanced multicast broadcast (E-MBS), sends to sending module by the running time-frequency resource obtained;
Described sending module, for selecting modulation coding mode according to interference measurement results on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
Pass through the present invention, effectively can reduce the interference of femtocell base station in synchronous multicasting broadcast transmission overlay area, namely picocell is reduced to the interference of macrocell Multimedia Broadcast Multicast Service, femtocell base station opens and closes E-MBS service according to the terminal of oneself serving the need of reception E-MBS business simultaneously, both picocell power saving can be made, save the bandwidth resources that picocell is connected with network side simultaneously, better for privately owned user provides service, the service quality of system can have been improved.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is that femtocell base station sends the frame schematic diagram resource of Multimedia Broadcast Multicast Service not sending signaling and/or data message at macrocell;
Fig. 2 is the handling process schematic diagram of the embodiment of the present invention one femtocell base station to mutual broadcasting service resources;
Fig. 3 is that femtocell base station sends the frame schematic diagram resource of Multimedia Broadcast Multicast Service sending signaling and/or data message with lower-wattage at macrocell;
Fig. 4 is the handling process schematic diagram of the embodiment of the present invention three femtocell base station to mutual broadcasting service resources;
Fig. 5 is that femtocell base station sends the frame schematic diagram different subframes in the radio frames of Multimedia Broadcast Multicast Service sending identical Multimedia Broadcast Multicast Service at macrocell;
Fig. 6 a and 6b is grand diversity and the non-macro diversity transmission mode subframe configuration schematic diagram of multiple cell Multimedia Broadcast Multicast Service;
To be femtocell base station sending the frame schematic diagram of dynamic dispatching list cell multicast broadcasting service on the different position of the running time-frequency resource of Multimedia Broadcast Multicast Service from macrocell to Fig. 7.
Embodiment
A kind of implementation is: with the enhanced multicast of the base station of macro cell base station covering area overlapping broadcast (E-MBS) business close time, described base station obtains described macro cell base station for sending E-MBS running time-frequency resource, and described running time-frequency resource does not send signaling and/or data.
Another kind of implementation is: obtain with the base station of macro cell base station covering area overlapping described macro cell base station to broadcast (E-MBS) business running time-frequency resource for sending enhanced multicast, modulation coding mode is selected according to interference measurement results in described base station on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
Above-mentioned base station is femtocell base station or macro cell base station.
By above scheme, the interference that femtocell base station produces the E-MBS business that macro cell base station sends can be reduced to greatest extent.In addition, employing scheme one also a saving the bandwidth resources (Radio Resource) that picocell is connected with network side.And second scheme makes full use of Radio Resource, save cable resource.
Covering area overlapping as herein described or overlapping covering comprise following situation, the overlay area of picocell in the overlay area of macrocell, the overlay area of picocell and the covering area overlapping of macrocell.
Above-mentioned macro cell base station adopts the grand diversity transmission mode of multiple cell to send E-MBS business, and described running time-frequency resource is the running time-frequency resource sending E-MBS business with multiple cell macro diversity mode.It should be noted that, because macro cell base station adopts multiple cell grand diversity transmission mode, it must be positioned at an E-MBS Zone, but picocell can belong to this E-MBS Zone also can not belong to this E-MBS Zone.
Preferably, described femtocell base station in the following ways in one or both obtain described running time-frequency resource: described femtocell base station monitors the broadcast (such as Resourse Distribute broadcast) of the overlapping macro cell base station covered with it, obtains the running time-frequency resource position that this macro cell base station sends E-MBS business; Described femtocell base station obtains by network side (such as by E-MBS service controller or E-MBS gateway) the running time-frequency resource position that described macro cell base station sends E-MBS.Femtocell base station can adopt above-mentioned two kinds of modes to obtain simultaneously, the resource allocation information of the E-MBS such as sent by network side.
When the terminal in described macrocell initiates handover request, and described terminal indicate in handover request message need keep receive Multimedia Broadcast Multicast Service time, described macro cell base station and described femtocell base station consult the E-MBS capability state (such as being held consultation by handover request and handoff response) of this femtocell base station; After negotiation, to in the switching command message of terminal response, carry the E-MBS capability state (such as by the form of list) of all candidate target cells, described terminal at least selects a Target cell according to the E-MBS ability of candidate target cells from candidate target cells, sends switch instruction to described macro cell base station.
Above-mentioned E-MBS capability state comprises: support that E-MBS business and E-MBS business activate; Support E-MBS business and the closedown of E-MBS business; Do not support E-MBS business.Described macro cell base station judges that the Target cell that described terminal is selected is picocell, and the E-MBS capability state of femtocell base station belonging to described picocell is for supporting E-MBS business and the closedown of E-MBS business, then described macro cell base station indicates described femtocell base station to activate E-MBS business.
When described terminal enters into enable mode from idle pulley, described picocell is selected to carry out network when re-accessing, femtocell base station can obtain related control information and/or the data of terminal by other unit (such as E-MB gateway or E-MBS service controller) of paging controller or network, wherein at least comprise the information relevant with E-MBS, make femtocell base station can judge whether this terminal will receive E-MBS business according to this information, if terminal is receiving E-MBS business, then described femtocell base station needs to transfer unlatching (activation) state to from closedown (to be activated) state, or maintenance state of activation.After described femtocell base station activates E-MBS business, obtained control and/or the data message of Multimedia Broadcast Multicast Service by the E-MBS gateway of network side or E-MBS service controller.Can with single cell multicast broadcast mode, or multiple cell multicast and broadcast mode (comprising grand diversity and non-macro diversity mode) provides Multimedia Broadcast Multicast Service service.
Especially, for the first scheme:
The subframe position that oneself is not sent signaling and/or data by described femtocell base station is informed to terminal, and described terminal does not receive signaling and/or data in these subframe position.Further, described femtocell base station can by making an appointment or message informing (express or imply), and terminal is known, and it does not send the subframe position of signaling and/or data.Such as, femtocell base station can pass through broadcast (see table 1) notification terminal expressly, described broadcast comprises one or more in following information: superframe, radio frames, wireless sub-frame, do not indicated by the mode of making an appointment by the content that broadcast is carried.The instruction of described superframe level or radio frames level or sub-frame level can one of in the following manner: bit map (Bit Map), drawing indexing (Bit Map Pattern Index), lookup table mode represent;
The form of table 1 system broadcast message
| syntax | size (bits) | notes |
| system information IE Format{ | ||
| superframe bitmap indication | tBD | do not send the superframe position indication information of any signaling and/or data. |
| frame bitmap indication | 4 | do not send the frame position indication information of any signaling and/or data. |
| subframe bitmap indication | tBD | do not send the subframe position indication information of any signaling and/or data. |
When described femtocell base station supports E-MBS business and terminal in current picocell does not have all terminals in request receiving E-MBS business or current picocell all to terminate to receive E-MBS business, described femtocell base station is selected to close its E-MBS business.
For first scheme:
The modulation coding mode of described selection at least should ensure this femtocell base station cover under the signal quality of unicast user.
The base station realizing such scheme one comprises judge module, source obtaining module and sending module, wherein:
Described judge module, for judge this base station enhanced multicast broadcast (E-MBS) business be closed condition time judge that whether the overlay area of this base station overlapping with macro cell base station overlay area further, if so, then described source obtaining module is called;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of E-MBS, sends to sending module by the running time-frequency resource obtained;
Described sending module, for stopping sending signaling and/or data on described running time-frequency resource.
The base station realizing such scheme two comprises judge module and sending module, wherein:
Described judge module, for when judging the covering area overlapping of the overlay area of this base station and macro cell base station, calls described source obtaining module;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of enhanced multicast broadcast (E-MBS), sends to sending module by the running time-frequency resource obtained;
Described sending module, for selecting modulation coding mode according to interference measurement results on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
For picocell, the present invention is further described below, identical therewith to the processing method of macrocell.
Macrocell and picocell can be there is in the region of multiple cell synchronous transmission Multimedia Broadcast Multicast Service, the E-MBS business service controller of network side or scheduler United Dispatching mutual broadcasting service resources, and control information and data are sent in each base station in multiple cell multicast and broadcast region.When the current institute in picocell service-user does not have Multimedia Broadcast Multicast Service demand, picocell can not send Multimedia Broadcast Multicast Service, when terminal activates Multimedia Broadcast Multicast Service or network side activates Multimedia Broadcast Multicast Service, picocell can send Multimedia Broadcast Multicast Service according to scene with different sending modes, described sending mode comprises: the grand diversity transmission mode of multiple cell, multiple cell non-macro diversity transmission mode, single community send mode; Then Multimedia Broadcast Multicast Service can not be sent when there is no the Multimedia Broadcast Multicast Service activated.
Embodiment 1
When the capability state of the Multimedia Broadcast Multicast Service of femtocell base station is closed condition, and this femtocell base station is in the overlay area of a macro cell base station, and this macro cell base station and femtocell base station belong in territory, a multiple cell synchronized transmission multicast broadcasting service area.When all terminals taking femtocell base station as serving BS do not receive the demand of Multimedia Broadcast Multicast Service, femtocell base station can not send any multicast broadcast service data.
Fig. 1 gives the frame schematic diagram that femtocell base station does not send signaling and/or data message in the resource of macrocell transmission Multimedia Broadcast Multicast Service.Fig. 2 gives the handling process schematic diagram of femtocell base station to mutual broadcasting service resources, comprises the following steps:
Step 110, in macrocell Multimedia Broadcast Multicast Service by network side isochronous schedules in all or part of sub-carrier resources of some wireless sub-frame time, femtocell base station obtains the resource location information of these Multimedia Broadcast Multicast Service from the Multimedia Broadcast Multicast Service service controller of network side or scheduler;
Step 120, femtocell base station does not then send any signaling and/or data on these running time-frequency resources;
That is, femtocell base station only sends signaling and/or data on the running time-frequency resource except those running time-frequency resources, and in other words, femtocell base station stops sending signaling and/or data on those running time-frequency resources.
By not sending signaling and/or data on these running time-frequency resources, thus avoid mutually disturbing with the Multimedia Broadcast Multicast Service under macrocell, the macro cell base station user affected around femtocell base station receives the quality of Multimedia Broadcast Multicast Service.
Step 130, femtocell base station is by broadcast, and as system configuration descriptor, notification terminal does not send the indication information of the subframe position of any signaling and/or data.
Step 140, macro cell base station judges whether have terminal to prepare to switch to picocell in its macrocell of administering, and this terminal needs to keep receiving multicast broadcast services, if so, performs step 150, otherwise terminates;
If macro cell base station receives the handover request information (MSHO-REQ) that terminal sends, and comprise E-MBS service request in this information, or by alternate manner, macro cell base station knows that terminal is receiving E-MBS business, then think that above-mentioned condition is set up, perform step 150.
Step 150, macro cell base station, by the target BS of network side to candidate, comprises femtocell base station, sends handover request message (HO-REQ), comprises E-MBS service request in this message;
Step 160, picocell responds after receiving this message, feeds back the capability state of its EMBS business;
Step 170, macro cell base station sends candidate target cell list (candidate target BSs) in the switching command message sent to terminal (BSHO-CMD), and carries the E-MBS capability state of candidate target cells;
Aforementioned capabilities state can only comprise to be supported and does not support E-MBS business, and the community access of E-MBS business is supported in terminal screening.Or also can not carry this ability, and directly be screened the Target cell supporting E-MBS business by macro cell base station, be added in candidate target cell list.
Step 180, terminal selects suitable final goal community transmission switching instruction (HO-IND) to switch;
Step 190, macro cell base station judges that final goal community is picocell, if its E-MBS is in closed condition, then this macro cell base station indicates this femtocell base station to activate EMBS business.
In other embodiments, if macro cell base station does not carry the E-MBS capability state of candidate target cells in target cell list, if EMBS business is not supported in the target picocell that then terminal is selected, the EMBS business of terminal will stop.
Embodiment 2
When femtocell base station does not support Multimedia Broadcast Multicast Service, and this femtocell base station is in the overlay area of a macro cell base station, and this macro cell base station and femtocell base station belong in territory, a multiple cell synchronized transmission multicast broadcasting service area.
When all terminals taking femtocell base station as serving BS do not receive the demand of Multimedia Broadcast Multicast Service, the signaling of unicast traffic and/or data on the running time-frequency resource of the Multimedia Broadcast Multicast Service that femtocell base station can distribute at network side, but transmitted power is limited, femtocell base station can decide the modulation coding mode that unicast traffic on the resource adopts according to the interference of measuring in the resource of macro cell base station transmission EMBS business, to reduce femtocell base station receiving the interference of EMBS data and macro cell base station EMBS data to the interference of the unicast data of the terminal under femtocell base station to macro cell base station terminal.
Fig. 3 gives femtocell base station sends signaling and/or data message in the resource of macrocell transmission Multimedia Broadcast Multicast Service frame schematic diagram with lower-wattage.Fig. 4 gives the handling process schematic diagram of femtocell base station to mutual broadcasting service resources, comprises the following steps:
Step 210, femtocell base station can by monitoring the broadcast of the overlapping macro cell base station covered with it, obtain the resource location information of Multimedia Broadcast Multicast Service, or, when femtocell base station also belongs to a base station in territory, a multiple cell synchronized transmission multicast broadcasting service area, obtain the resource location information of Multimedia Broadcast Multicast Service by network side;
Step 220, femtocell base station reduces transmitting power in these sub-carrier resources, namely selects more reliable modulating-coding speed to be signaling and/or the data of its user's unicast traffic in these resources with lower data rate.
When preparing when there being terminal in macrocell to switch to picocell, and this terminal needs to keep receiving Multimedia Broadcast Multicast Service, whether supports Multimedia Broadcast Multicast Service, performs different process, see embodiment 1 according to femtocell base station.
Embodiment 3
Femtocell base station is in the overlay area of a macro cell base station, and this macro cell base station and femtocell base station belong in territory, a multiple cell synchronized transmission multicast broadcasting service area, when Multimedia Broadcast Multicast Service by network side isochronous schedules in all or part of sub-carrier resources of some wireless sub-frame time, femtocell base station and macro cell base station can provide Multimedia Broadcast Multicast Service with the send mode of grand diversity or non-macro diversity.Femtocell base station obtains resource location, control information and/or the data message of Multimedia Broadcast Multicast Service by network side.Under grand diversity transmission mode, picocell and macrocell synchronized transmission Multimedia Broadcast Multicast Service, namely picocell sends identical Multimedia Broadcast Multicast Service sending with macrocell in the identical subframe in the radio frames of Multimedia Broadcast Multicast Service.Under non-macro diversity transmission mode, picocell sends identical Multimedia Broadcast Multicast Service content sending in subframes different in the radio frames of Multimedia Broadcast Multicast Service from macrocell.Fig. 5 gives the frame schematic diagram different subframes of femtocell base station in the radio frames of macrocell transmission Multimedia Broadcast Multicast Service sending identical Multimedia Broadcast Multicast Service.
The multiple cell synchronized transmission Multimedia Broadcast Multicast Service of grand diversity, i.e. grand diversity transmission mode, send identical multicast broadcast service data at identical running time-frequency resource in a synchronous manner by multiple macrocell, thus acquisition macro diversity, to improve covering, increase the Multimedia Broadcast Multicast Service throughput of Cell Edge User, the data simultaneously sent in this resource due to multiple cell are identical, therefore there is not interference, thus can launch with higher power, improve power system capacity further.
Do not support that the multiple cell of grand diversity sends Multimedia Broadcast Multicast Service, i.e. non-macro diversity transmission mode, to send identical multicast broadcast service data an inter-sync mode of radio frames by multiple macrocell, each macrocell does not need strict sign synchronization, and each macrocell the different subframes in same radio frames can send identical multicast broadcast content, terminal can by receiving multiple multicast broadcast service data bag with identical content, thus obtain alternative amalgamate gain, to improve the Multimedia Broadcast Multicast Service reception reliability of Cell Edge User.
Fig. 6 a and Fig. 6 b sets forth the sub-frame configuration mode of the multiple cell Multimedia Broadcast Multicast Service supporting grand diversity, and does not support the sub-frame configuration mode of multiple cell Multimedia Broadcast Multicast Service of grand diversity.As shown in the figure, for the multiple cell Multimedia Broadcast Multicast Service send mode supporting grand diversity, each macro cell base station configures identical multicast and broadcast subframe, and for not supporting the multiple cell Multimedia Broadcast Multicast Service send mode of grand diversity, each macro cell base station in identical radio frames, but can configure different multicast and broadcast subframes.
Under non-macro diversity transmission mode, taking picocell as the Multimedia Broadcast Multicast Service service that the user of Serving cell can obtain this community, simultaneously by receiving the identical Multimedia Broadcast Multicast Service content that macrocell sends in other subframe, optionally merging.Be simultaneously the Multimedia Broadcast Multicast Service service that the user of Serving cell can obtain this community with macrocell, simultaneously by the identical Multimedia Broadcast Multicast Service content that picocell near receiving sends in other subframe, optionally merge.Thus improve the service quality of Multimedia Broadcast Multicast Service.
When picocell enters low energy consumption mode of operation (low-duty mode), Multimedia Broadcast Multicast Service still continues to send.The parameters such as the resource allocation cycle of Multimedia Broadcast Multicast Service do not affect the parameter configuration in available (available) under low energy consumption mode of operation and unavailable (unavailable) cycle.Available (available) under low energy consumption mode of operation and the parameter configuration in unavailable (unavailable) cycle also can adjust according to the resource allocation cycle of Multimedia Broadcast Multicast Service by picocell.
Embodiment 4
Suppose that femtocell base station and macro cell base station use different carrier frequency, or the terminal that femtocell base station is being served only has minority to receive Multimedia Broadcast Multicast Service, and the mode that femtocell base station can send with single community provides Multimedia Broadcast Multicast Service for its service-user.Femtocell base station obtains the data message of Multimedia Broadcast Multicast Service by network side, sends these multicast broadcast service datas by femtocell base station dynamic dispatching.Fig. 7 gives femtocell base station and is sending the frame schematic diagram of dynamic dispatching list cell multicast broadcasting service on the different position of the running time-frequency resource of Multimedia Broadcast Multicast Service from macrocell.
It is send Multimedia Broadcast Multicast Service by the flexible dynamic dispatching resource in base station that single community sends Multimedia Broadcast Multicast Service, there is no the grand diversity of multiple cell and alternative amalgamate gain, but base station without the need to other base station coordinated scheduling resource, therefore can flexible dispatching resource, under being applicable to the scene of scene that some cannot be synchronous very well with other base station and pilot frequency point work more.
As mentioned above, by means of the sending method of Multimedia Broadcast Multicast Service in picocell provided by the invention, terminal reliably can receive Multimedia Broadcast Multicast Service efficiently.Solve the interference coordination problem that Multimedia Broadcast Multicast Service is provided between picocell and macrocell in system, by the present invention, the multicast broadcast services performance of system can be improved.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. avoid, to a method for the interference that the Multimedia Broadcast Multicast Service strengthened produces, it is characterized in that,
With the enhanced multicast of the base station of macro cell base station covering area overlapping broadcast E-MBS business close time, described base station obtains described macro cell base station for sending the running time-frequency resource of E-MBS, described running time-frequency resource does not send signaling and/or data, and described base station only sends signaling and/or data on the running time-frequency resource except described running time-frequency resource.
2. the method for claim 1, is characterized in that,
Described macro cell base station adopts the grand diversity transmission mode of multiple cell to send E-MBS business, and described running time-frequency resource is the running time-frequency resource sending E-MBS business with multiple cell macro diversity mode.
3. the method for claim 1, is characterized in that,
Described base station in the following ways in one or both obtain described running time-frequency resource:
The broadcast of the overlapping macro cell base station covered with it is monitored in described base station, obtains the running time-frequency resource position that this macro cell base station sends E-MBS business;
Described base station obtains by network side the running time-frequency resource position that described macro cell base station sends E-MBS.
4. the method for claim 1, is characterized in that,
The subframe position that oneself is not sent signaling and/or data by described base station is informed to terminal, and described terminal does not receive signaling and/or data in these subframe position.
5. the method for claim 1, is characterized in that,
When E-MBS business is supported in described base station and terminal in current area does not have all terminals in request receiving E-MBS business or current area all to terminate to receive E-MBS business, E-MBS business is closed in described base station.
6. the method for claim 1, is characterized in that,
When the terminal in described macrocell initiates handover request, and when described terminal indicates needs to keep receiving Multimedia Broadcast Multicast Service in handover request message, the E-MBS capability state of described macro cell base station and described this base station of base station negotiate; After negotiation, to in the switching command message of terminal response, carry the E-MBS capability state of all candidate target cells, described terminal at least selects a Target cell according to the E-MBS capability state of candidate target cells from candidate target cells, sends switch instruction to described macro cell base station.
7. method as claimed in claim 6, is characterized in that,
Described E-MBS capability state comprises: support that E-MBS business and E-MBS business activate; Support E-MBS business and the closedown of E-MBS business; Do not support E-MBS business.
8. method as claimed in claim 7, is characterized in that,
Described macro cell base station judges that the E-MBS capability state of the community own base station that described terminal is selected is as supporting E-MBS business and the closedown of E-MBS business, then indicate described base station activation E-MBS business.
9. the method for claim 1, is characterized in that,
Terminal enters enable mode from idle pulley, select administration community, described base station to carry out network to re-access, by network side, described base station knows that terminal will receive E-MBS business, if the E-MBS capability state of described base station is for closing E-MBS business, then described base station activation E-MBS business.
10. the method as described in claim arbitrary in claim 1-9, is characterized in that,
Described base station is femtocell base station or the second macro cell base station.
Avoid for 11. 1 kinds, to the method for the interference that the Multimedia Broadcast Multicast Service strengthened produces, it is characterized in that,
Described macro cell base station to broadcast E-MBS business running time-frequency resource for sending enhanced multicast is obtained with the base station of macro cell base station covering area overlapping, modulation coding mode is selected according to interference measurement results in described base station on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
12. methods as claimed in claim 11, is characterized in that,
Described macro cell base station adopts the grand diversity transmission mode of multiple cell to send E-MBS business, and described running time-frequency resource is the running time-frequency resource sending E-MBS business with multiple cell macro diversity mode.
13. methods as claimed in claim 11, is characterized in that,
Described base station in the following ways in one or both obtain described running time-frequency resource:
The broadcast of the overlapping macro cell base station covered with it is monitored in described base station, obtains the running time-frequency resource position that this macro cell base station sends E-MBS business;
Described base station obtains the running time-frequency resource position sending E-MBS by network side.
14. methods as claimed in claim 11, is characterized in that,
When the terminal in described macrocell initiates handover request, and when described terminal indicates needs to keep receiving Multimedia Broadcast Multicast Service in handover request message:
The E-MBS capability state of described macro cell base station and described this base station of base station negotiate; After negotiation, to in the switching command message of terminal response, carry the E-MBS capability state of all candidate target cells, described terminal at least selects a Target cell according to the E-MBS capability state of candidate target cells from candidate target cells, sends switch instruction to described macro cell base station.
15. methods as claimed in claim 11, is characterized in that,
Described E-MBS capability state comprises: support that E-MBS business and E-MBS business activate; Support E-MBS business and the closedown of E-MBS business; Do not support E-MBS business.
16. methods as claimed in claim 15, is characterized in that,
Described macro cell base station judges that the E-MBS capability state of the community own base station that terminal is selected is as supporting E-MBS business and the closedown of E-MBS business, then indicate described base station activation E-MBS business.
17. methods as claimed in claim 11, is characterized in that,
Terminal enters enable mode from idle pulley, select administration community, described base station to carry out network to re-access, by network side, described base station knows that terminal will receive E-MBS business, if the E-MBS capability state of described base station is for closing E-MBS business, then described base station activation E-MBS business.
Method as described in 18. claims as arbitrary in claim 11-16, is characterized in that,
Described base station is femtocell base station or the second macro cell base station.
Avoid for 19. 1 kinds, to the base station of the interference that the Multimedia Broadcast Multicast Service strengthened produces, it is characterized in that, comprising judge module, source obtaining module and sending module, wherein:
Described judge module, for judging that whether the overlay area of this base station is overlapping with macro cell base station overlay area further when the enhanced multicast broadcast E-MBS business judging this base station is closed condition, if so, then calls described source obtaining module;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of E-MBS, sends to sending module by the running time-frequency resource obtained;
Described sending module, for stopping sending signaling and/or data, also for only sending signaling and/or data on the running time-frequency resource except described running time-frequency resource on described running time-frequency resource.
Avoid for 20. 1 kinds, to the base station of the interference that the Multimedia Broadcast Multicast Service strengthened produces, it is characterized in that, comprising judge module, source obtaining module and sending module, wherein:
Described judge module, for when judging the covering area overlapping of the overlay area of this base station and macro cell base station, calls described source obtaining module;
Described source obtaining module, for obtaining described macro cell base station for sending the running time-frequency resource of enhanced multicast broadcast E-MBS, sends to sending module by the running time-frequency resource obtained;
Described sending module, for selecting modulation coding mode according to interference measurement results on described running time-frequency resource, adopts signaling and/or the data of the modulation coding mode unicast traffic selected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172871.0A CN102006557B (en) | 2009-08-31 | 2009-08-31 | Method and base station for avoiding disturbance to enhanced multicast broadcasting services (E-MBS) |
| PCT/CN2010/073829 WO2011023019A1 (en) | 2009-08-31 | 2010-06-11 | Mehod and base station for providing enhanced multicast broadcast service(e-mbs) |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910172871.0A CN102006557B (en) | 2009-08-31 | 2009-08-31 | Method and base station for avoiding disturbance to enhanced multicast broadcasting services (E-MBS) |
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| CN102006557A CN102006557A (en) | 2011-04-06 |
| CN102006557B true CN102006557B (en) | 2015-05-13 |
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| CN102932836B (en) * | 2011-08-12 | 2017-11-10 | 邳州高新区生物医药研究院有限公司 | A kind of switching handling method and system |
| CN104541485B (en) * | 2012-05-02 | 2017-11-10 | Lg电子株式会社 | The method and device for the method for channel are estimated in wireless access system |
| CN103546259B (en) * | 2012-07-09 | 2017-04-19 | 华为技术有限公司 | Transmission signal transmitting and receiving method, terminal and base station |
| US9723455B2 (en) * | 2012-10-22 | 2017-08-01 | Acer Incorporated | Method of transmitting multicast signal and unicast signal simultaneously and related communication device |
| CN110582110B (en) * | 2018-06-07 | 2021-08-17 | 中国移动通信集团山东有限公司 | Optimal cell selection method for NB-IoT network overlapping coverage area |
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| US5884145A (en) * | 1996-08-28 | 1999-03-16 | Telefon Akmebolget Lm Ericsson | Method and system for autonomously allocating a cellular communications channel for communication between a cellular terminal and a telephone base station |
| GB2390953A (en) * | 2002-07-15 | 2004-01-21 | King S College London | Controlling a micro cell transmit power to maintain quality of service for nearby devices served by an overlapping macro cell |
| US8369859B2 (en) * | 2006-05-22 | 2013-02-05 | Alcatel Lucent | Controlling transmit power of picocell base units |
| US20080037460A1 (en) * | 2006-08-14 | 2008-02-14 | Muthaiah Venkatachalam | Broadband wireless access network and method for providing multicast broadcast services within multicast broadcast service zones |
| CN101166143B (en) * | 2006-10-18 | 2012-05-23 | 华为技术有限公司 | Receiving method and system for multicast broadcast service |
| CN101466071B (en) * | 2007-12-17 | 2010-11-10 | 华为技术有限公司 | Method and apparatus for distributing time frequency resource |
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| WO2011023019A1 (en) | 2011-03-03 |
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