CN102202262B - User equipment and method for acquiring multicast control information - Google Patents

User equipment and method for acquiring multicast control information Download PDF

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Publication number
CN102202262B
CN102202262B CN201010143243.2A CN201010143243A CN102202262B CN 102202262 B CN102202262 B CN 102202262B CN 201010143243 A CN201010143243 A CN 201010143243A CN 102202262 B CN102202262 B CN 102202262B
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China
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mcch
information
amendment cycle
subscriber equipment
interested
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CN102202262A (en
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苟伟
艾建勋
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ZTE Corp
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ZTE Corp
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Priority to CN201010143243.2A priority Critical patent/CN102202262B/en
Priority to PCT/CN2011/071797 priority patent/WO2011116661A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides user equipment and a method for acquiring multicast control information. The method comprises that: when the user equipment cannot determine whether the multicast control channel (MCCH) information to be sent contains interested multimedia broadcast and multicast service (MBMS) session starting information, the user equipment acquires the MCCH information. By adopting the technical scheme, the condition that the user equipment misses MBMS receiving can be reduced, a path is provided for receiving the MCCH information by the user equipment, and the acquisition reliability of the MCCH information is improved.

Description

A kind of subscriber equipment and method of obtaining control information of multicast
Technical field
The present invention relates to Long Term Evolution (Long Term Evolution, referred to as LTE) system, be particularly related to one and obtain subscriber equipment and the method for multicast control channel (Multicast Control Channel, referred to as MCCH) information.
Background technology
Along with the fast development of Internet and popularizing of large-screen multi-functional mobile phone, a large amount of Mobile data multimedia services and various high bandwidth multimedia service are there is, for example, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., this has met the business demand that mobile subscriber constantly rises on the one hand, simultaneously also for mobile operator brings new business growth point.These Mobile data multimedia services require multiple users can receive identical data simultaneously, compared with general data service, have the features such as data volume is large, duration length, delay sensitive.
In order to effectively utilize mobile network resource, third generation partner program (3rd GenerationPartnership Project, referred to as 3GPP) multimedia broadcast-multicast service (MultimediaBroadcast Multicast Service proposed, referred to as MBMS), this business is a kind of technology that transmits data from a data source to multiple targets, realize sharing of network (comprising core net and Access Network) resource, improved the utilance of Internet resources (especially air interface resource).The MBMS of 3GPP definition not only can realize classes of messages multicast and the broadcast of plain text low rate, but also can realize broadcast and the multicast of high-speed multimedia business, multiple abundant video, audio frequency and multimedia service are provided, this has complied with the trend of following Mobile data development undoubtedly, for the development of 3G provides better business prospect.
At present, in LTE, the reception of MBMS business is divided into two kinds of situations, one is subscriber equipment (UserEquipment, referred to as UE) interested for MBMS business, and know that own interested MBMS business is at that multimedia broadcast-multicast service single frequency network (Multimedia Broadcastmulticast service Single Frequency Network, referred to as MBSFN) region, when but this business also does not start to play at present (can be understood as this business will play), specify that according to current agreement this UE need to monitor MCCH update notification (MCCH change notifications) message always, until the MCCH in the MBSFN region at the interested MBMS business of this UE place (being below the interested MCCH of UE this MCCH summary) information is upgraded (specifying that in LTE this renewal is to be started to cause by the new MBMS service conversation in this MBSFN region), this UE can read corresponding MCCH information within this MCCH amendment cycle.
Fig. 1 has illustrated the MCCH repetition period (repetitionperiod) of the Nei community, MBSFN region in LTE and the signal in amendment cycle (modificationperiod), meanwhile, also has the transmission schematic diagram of corresponding MCCH update notification message.MCCH information is periodically to send, but the MCCH information repeatedly sending in each MCCH amendment cycle is identical, only within the next MCCH amendment cycle, (being next MCCH amendment place on opportunity in cycle) just can send the MCCH information of renewal, is not allow MCCH information updating in the MCCH amendment cycle.MCCH update notification message sends 2 times or 4 times within a MCCH amendment cycle, concrete number of times is by base station autonomous configuration, MCCH update notification message is whether the MCCH information in the notice UE next MCCH amendment cycle on the horizon is upgraded, the reason that also renewal can be caused is only defined as because MBMS session starts to cause, has new MBMS session start information to start to send.
MCCH update notification message is only effective to an amendment cycle, whether the MCCH update notification message in i.e. N the MCCH amendment cycle only notifies N+1 the MCCH information in the MCCH amendment cycle to upgrade, and whether the MCCH update notification message in N+1 MCCH amendment cycle is for notifying N+2 the MCCH information in the MCCH amendment cycle to change with respect to the MCCH information in N+1 MCCH amendment cycle.
Specify according to LTE agreement, when an interested MBMS business of UE with MBMS ability does not start, this UE monitors the update notification message of the MCCH in the MBSFN region at this MBMS business place always, until MCCH update notification message is informed UE, MCCH information is upgraded, now, within the MCCH amendment cycle on the horizon, UE needs to receive MCCH information.The object of making is like this to avoid the UE that does not receive MBMS business to receive MCCH information within each MCCH amendment cycle, check and whether have own interested MBMS session start information to send, because MCCH information data amount is far longer than the data volume of MCCH update notification message, and MCCH information does not often change, do not receive if allowed the waste that each amendment cycle of the UE of MBMS business receives MCCH information and can cause UE electric energy.
Shown in Fig. 2, according to current LTE agreement, when UE has missed after the MCCH update notification message in N MCCH amendment cycle, UE will continue to receive MCCH update notification message within N+1 MCCH amendment cycle, and do not receive MCCH information, so just may cause UE to miss the opportunity that receives MBMS.
By analysis, in this class UE can scene below time, likely miss and receive the interested MCCH information of UE, miss and receive own interested MBMS thereby can have influence on this UE.
Scene 1, monitoring MCCH update notification message UE, waiting for that own interested MBMS session starts, but because network is disturbed suddenly, cause UE to miss the reception of the repeatedly MCCH update notification message of the interested MCCH of UE within the current amendment cycle, finally, in the time that the next amendment cycle of the interested MCCH of UE arrives, UE still can not determine whether the MCCH information in the next MCCH amendment cycle renewal has occurred, specify according to agreement, in UE can not determine the next MCCH amendment cycle, whether MCCH there is more news, UE continued to receive MCCH update notification message within the next MCCH amendment cycle, and do not receive MCCH information.If base station is exactly to have sent the interested MCCH of notice UE will to upgrade within the next MCCH amendment cycle within the current MCCH amendment cycle, so, according to LTE agreement regulation, UE can only continue to receive MCCH update notification message, and the MCCH update notification message in next MCCH amendment cycle does not reinform the interested MCCH information of UE and upgrades, because the upper MCCH amendment cycle was notified, will cause like this UE to miss and receive MCCH with interest, finally make UE miss and receive interested MBMS.
2 scenes and above-mentioned scene comparing class seemingly, just cause that UE misses the reason difference of MCCH update notification message, simply describes below below:
Scene 2, monitoring the UE of MCCH update notification, waiting for that own interested MBMS session starts, but due to the movement of UE, need to carry out community switching or gravity treatment, but transmission cycle, the positional information of MCCH update notification message that UE starts to obtain to UE Target cell in the process of carrying out community switching or gravity treatment needs the regular hour, likely make during this period of time UE miss the reception of the MCCH update notification message in one or more MCCH amendment cycle, thereby cause following possibility situation:
Likely cause UE in the time that the next MCCH amendment cycle arrives, can not receive the MCCH information in the next MCCH amendment cycle owing to having missed all MCCH update notification messages in this MCCH amendment cycle, the subsequent scenario of this UE is with scene 1.
Scene 3, because MCCH update notification message is that the Block Error Rate that single sends is 2%, Block Error Rate is higher, this is because MCCH update notification message is to adopt single cell pattern to send, do not support the MBSFN of neighbor cell to merge, so MCCH update notification message just may receive mistake when UE channel quality is poor, but MCCH information and MBMS adopt MBSFN mode to send, support neighbor cell MBSFN to merge, MCCH information and MBMS reliability are more much higher than MCCH update notification message like this.The UE that will make monitoring like this MCCH update notification message, misses MCCH update notification message, finally misses the chance that receives MCCH information within the MCCH amendment cycle, thereby has missed the chance that receives MBMS.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of subscriber equipment and method of obtaining control information of multicast, can reduce upper UE and miss the generation that receives MBMS, provides a kind of path for UE receives MCCH information, and MCCH acquisition of information reliability is improved.
In order to address the above problem, the invention provides a kind of method of obtaining control information of multicast, comprising:
Whether comprise own interested multimedia broadcast-multicast service (MBMS) service conversation start information in subscriber equipment cannot be determined by multicast control channel (MCCH) information sending time, described subscriber equipment obtains MCCH information.
Further, before arriving the opportunity in amendment cycle of the interested MCCH of subscriber equipment, subscriber equipment can not determine that when whether MCCH information is upgraded in the described MCCH amendment cycle on the horizon, described subscriber equipment receives MCCH information within the described MCCH amendment cycle on the horizon.
Further, before arriving the opportunity in amendment cycle of the interested MCCH of subscriber equipment, subscriber equipment can not determine in the described MCCH on the horizon amendment cycle that MCCH information is while upgrading due to the MCCH that has new MBMS service conversation start information to cause, and described subscriber equipment receives MCCH information within the described MCCH amendment cycle on the horizon.
Further, when whether the MCCH information in subscriber equipment be can not determine the interested MCCH amendment cycle comprises interested MBMS session start information, subscriber equipment MCCH on the horizon repetition period within this MCCH amendment cycle locates to receive MCCH information.
Further, describedly within the MCCH amendment cycle on the horizon, receive MCCH information and refer to, first MCCH repetition period within the MCCH amendment cycle on the horizon locates to receive MCCH information;
In the MCCH amendment cycle, comprise multiple MCCH repetition periods.
Further, when whether the MCCH information in subscriber equipment be can not determine the interested MCCH amendment cycle comprises interested MBMS session start information, subscriber equipment MCCH on the horizon repetition period within this MCCH amendment cycle locates to receive MCCH information.
Further, described subscriber equipment is to monitor MCCH update notification message to know whether the MCCH information in the MBSFN region at interested MBMS place the subscriber equipment upgrading occurs.
The present invention also provides a kind of subscriber equipment that obtains control information of multicast:
Described subscriber equipment, while whether comprising its interested multimedia broadcast-multicast service (MBMS) service conversation start information, obtains MCCH information for determining by multicast control channel (MCCH) information sending.
Further, described subscriber equipment cannot be determined in the MCCH information that is about to send while whether comprising its interested MBMS service conversation start information, obtain MCCH information and refer to:
Subscriber equipment opportunity in amendment cycle of its interested MCCH at hand, and can not determine when in this MCCH amendment cycle on the horizon, whether MCCH information is upgraded, within the described MCCH amendment cycle on the horizon, receive MCCH information.
Further, described subscriber equipment cannot be determined in the MCCH information that is about to send while whether comprising its interested MBMS service conversation start information, obtain MCCH information and refer to:
Subscriber equipment opportunity in amendment cycle of its interested MCCH at hand, and can not determine in the described MCCH on the horizon amendment cycle that MCCH information is while upgrading due to the MCCH that has new MBMS service conversation start information to cause, receives MCCH information within the described MCCH amendment cycle on the horizon.
Further, described subscriber equipment is also in the time that whether the MCCH information in the interested MCCH amendment cycle can not determine comprises interested multimedia broadcast-multicast service (MBMS) session start information, and within this MCCH amendment cycle, the MCCH on the horizon repetition period locates to receive MCCH information.
Further, receive MCCH information and refer in the described MCCH amendment cycle on the horizon, any one the MCCH repetition period within the MCCH amendment cycle on the horizon locates to receive MCCH information.
Further, described subscriber equipment cannot be determined in the MCCH information that is about to send while whether comprising its interested MBMS service conversation start information, obtain MCCH information and refer to:
MCCH information in subscriber equipment be can not determine the interested MCCH amendment cycle is when it comprises interested MBMS session start information, and within this MCCH amendment cycle, the MCCH on the horizon repetition period locates to receive MCCH information.
Further, described subscriber equipment is to monitor MCCH update notification message to know whether the MCCH information in the MBSFN region at interested MBMS place the subscriber equipment upgrading occurs.
In sum, adopt technical scheme of the present invention, can ensure the UE by monitoring MCCH update notification message, avoid because underlying cause is missed the own interested MBMS business of reception: in the time that UE moves in minizone, wait switching or gravity treatment in the process of Target cell; When UE is after by of short duration interference; In the time that UE is positioned at channel quality poor position, can not correctly resolve MCCH update notification message time.Promote the reliability of MCCH acquisition of information.
Brief description of the drawings
Fig. 1 is the MCCH of prior art and the transmission schematic diagram of MCCH update notification message;
Fig. 2 is for illustrating that UE can not determine the schematic diagram of the MCCH information content in the next MCCH amendment cycle;
Fig. 3 is for illustrating that UE is at schematic diagram that can not determine the MCCH information content in the current MCCH amendment cycle.
Embodiment
In order to further illustrate the present invention, be elaborated below in conjunction with drawings and Examples.
The invention provides a kind of subscriber equipment that obtains control information of multicast, while whether comprising its interested MBMS service conversation start information for determining by the MCCH information sending, obtain MCCH information.
Subscriber equipment cannot be determined in the MCCH information that is about to send while whether comprising its interested MBMS service conversation start information, obtaining MCCH information refers to: subscriber equipment opportunity in amendment cycle of its interested MCCH at hand, and can not determine when whether MCCH information is upgraded in this MCCH amendment cycle on the horizon, within this MCCH amendment cycle on the horizon, receive MCCH information.
Subscriber equipment cannot be determined in the MCCH information that is about to send while whether comprising its interested MBMS service conversation start information, obtaining MCCH information refers to: subscriber equipment opportunity in amendment cycle of its interested MCCH at hand, and can not determine in this MCCH on the horizon amendment cycle that whether MCCH information be while upgrading due to the MCCH that has new MBMS service conversation start information to cause, receives MCCH information within this MCCH amendment cycle on the horizon.
Subscriber equipment is also in the time that whether the MCCH information in the interested MCCH amendment cycle can not determine comprises interested MBMS session start information, and within this MCCH amendment cycle, the MCCH on the horizon repetition period locates to receive MCCH information.
In the MCCH amendment cycle on the horizon, receive MCCH information and refer to, any one the MCCH repetition period within the MCCH amendment cycle on the horizon locates to receive MCCH information.
Above-mentioned subscriber equipment is to monitor MCCH update notification message to know whether the MCCH information in the MBSFN region at interested MBMS place the subscriber equipment upgrading occurs.
The invention provides a kind of method of obtaining control information of multicast, whether comprise own interested MBMS service conversation start information in UE cannot determine by the MCCH information sending time, UE obtains MCCH information.
Concrete, the present invention is mainly for not starting to receive MBMS business, but potential in the interested UE of MBMS business, specifies that according to LTE agreement this class UE need to determine whether MCCH upgrades by monitoring MCCH update notification message.
This class UE can determine by monitoring MCCH update notification message whether the MCCH information that is about to send renewal has occurred (in LTE, MCCH update notification message only notifies the MCCH causing due to MBMS service conversation start information to occur), then UE receives MCCH information within the next MCCH amendment cycle, detects wherein whether comprise own interested MBMS service conversation start information.
The UE the following describes under several typical scenes can not determine the solution of whether upgrading by the MCCH information sending.
Embodiment mono-
The present embodiment provides a kind of method of obtaining control information of multicast, before arriving the opportunity in amendment cycle of the interested MCCH of UE, UE can not determine that when whether MCCH information is upgraded in the MCCH amendment cycle on the horizon, UE need to receive MCCH information within the MCCH amendment cycle on the horizon; Or, before arriving the opportunity in amendment cycle of the interested MCCH of UE, UE can not determine in this MCCH on the horizon amendment cycle that MCCH information is while upgrading due to the MCCH that has new MBMS service conversation start information to cause, and UE receives MCCH information within this MCCH amendment cycle on the horizon.
As shown in Figure 2, for various reasons, UE does not obtain MCCH update notification message accurately within certain MCCH amendment cycle, MCCH information in next MCCH amendment cycle of this MCCH update notification message notice UE is upgraded (or MCCH information whether due to the MCCH renewal that has new MBMS service conversation start information to cause) in next MCCH amendment cycle of this MCCH update notification message notice UE, and the session that is the interested MBMS business of this UE starts to cause, therefore, UE need to receive MCCH information within the next MCCH amendment cycle on the horizon, position as shown in thick line in figure receives MCCH information.
Adopt after this scheme, for the UE that monitors MCCH update notification message, when having missed for various reasons after the reception of the MCCH update notification message in some or multiple MCCH amendment cycles, before the next MCCH amendment cycle arrives, UE can not determine whether MCCH information wherein more news occurs, and UE need to receive MCCH information within the MCCH amendment cycle on the horizon.Can reduce so above-mentioned UE and miss the generation that receives MBMS, provide a kind of path for UE receives MCCH information, MCCH acquisition of information reliability is improved.
Embodiment bis-
The present embodiment provides a kind of method of obtaining control information of multicast, when UE can not determine that while whether comprising the interested MBMS session of UE start information in the MCCH information of interested MCCH within the current amendment cycle, UE can locate to receive MCCH information the MCCH repetition period within the current MCCH amendment cycle.
Cause UE to can not determine that the reason that whether comprises the interested MBMS session of UE start information in the current MCCH amendment cycle in MCCH information has:
UE may just carry out the switching of complete primary school district or cell reselection to be caused, for example a certain UE that is monitoring MCCH update notification message carries out community switching or cell reselection, when behind UE access Target cell, obtain after the system information (being SIB13 system information block in LTE) of Target cell, UE has known that the MCCH of Target cell sends cycle, positional information, also the MCCH update notification message of having known Target cell sends cycle, positional information, but does not know the content of the MCCH information of Target cell.Simultaneously, likely UE access Target cell obtain system information after, miss several MCCH amendment cycle, UE is within the current MCCH amendment cycle of Target cell like this, be can not know Target cell MCCH information whether the MCCH information contrast of He Yuan community there is renewal, according to the present invention, UE should be within the current MCCH amendment cycle, locate to receive MCCH information opportunity repetition period at MCCH, detect and wherein whether comprised the interested MBMS service conversation of UE start information.If missed all MCCH repetition periods and MCCH update notification message in the current MCCH amendment cycle, UE receives MCCH information within the next MCCH amendment cycle so; If missed all MCCH update notification messages in the current MCCH amendment cycle, also have the part MCCH repetition period not miss, the MCCH that UE should receive within the current MCCH amendment cycle so locates to receive MCCH information opportunity repetition period, and receives MCCH information within the next MCCH amendment cycle; If in the current MCCH amendment cycle, all there are part MCCH update notification message and MCCH repetition period not to miss, so UE should be within the current MCCH amendment cycle MCCH locate to receive MCCH information opportunity repetition period, and receive the MCCH update notification message of not missing, further, if the MCCH update notification message that UE does not have accurate parsing not miss, UE receives MCCH update notification message and MCCH information within the next MCCH amendment cycle so.
When UE is positioned at cell edge, due to the transmit mechanism of MCCH update notification message different with the transmit mechanism of MCCH (having specific descriptions in background technology), so also may cause UE to miss continuously MCCH update notification message, cause can not determine in the current MCCH amendment cycle whether comprise the interested MBMS service conversation of UE start information in MCCH information.Operate the samely, repeat no more here.
Adopt after this scheme, for the UE that monitors MCCH update notification message, in the time that whether the MCCH information in the current MCCH amendment cycle can not determine for various reasons comprises the information that own interested MBMS session starts, UE should receive MCCH information as early as possible in the time that the MCCH repetition period arrives.Can make like this UE obtain as early as possible MCCH information one time, and the own interested MBMS of judgement whether session start, there is certain promptness.
Further describe the present invention by several application examples below
Application example 1
This application example is described because the UE that switch community or cell reselection causes misses MCCH update notification message, and the reception of missing MCCH information causing is missed MBMS and received.
Can be in idle condition (RRC_IDLE) or connection status (RRC_CONNECTED) when LTE agreement regulation UE receives MBMS business, when the UE of idle pulley moves in minizone, need to carry out cell reselection, when the UE of connection status moves in minizone, need to carry out community switching.UE is in carrying out community switching or gravity treatment, cannot obtain Target cell (community at the current place of UE to be called to former community, the community that UE will be switched to calls Target cell) MCCH update notification message, can only be behind target approach community, by obtaining the system information of carrying MCCH update notification message configuration of Target cell, (in LTE, this information is carried on SystemInformationBlockType13, referred to as SIB13) after, just can know the transmission cycle of the MCCH update notification message of Target cell, the information such as position, could start the MCCH update notification message of receiving target community, but during due to the SIB13 of UE receiving target community, need certain time delay, like this, this time delay may cause UE to miss all MCCH update notification messages in the MCCH amendment cycle of Target cell, thereby make UE can not determine whether MCCH information on the horizon is upgraded, whether comprise the session start information of the interested MBMS of UE.
According to the present invention, in these cases, UE is can not judge while whether having comprised the interested MBMS session of UE start information in MCCH information in the interested MCCH current amendment cycle, UE should receive MCCH information within this amendment cycle, concrete can locate to receive MCCH information opportunity repetition period at MCCH on the horizon; Or, UE is before the next amendment cycle of interested MCCH arrives, can not determine while whether comprising the interested MBMS session of UE start information in the MCCH information in the next MCCH amendment cycle, UE should receive MCCH information within the next MCCH amendment cycle on the horizon, concrete can be within the next MCCH amendment cycle first MCCH locate to receive MCCH information opportunity repetition period.
Concrete, when behind UE target approach community, in the time of the MCCH repetition period, obtain MCCH information; Or, behind UE target approach community, while can not determine the content in the MCCH information in the current MCCH amendment cycle, as shown in Figure 3, even if received the MBMS relevant information in SIB13 within this MCCH amendment cycle, also can only know the transmission cycle of its interested MCCH information, and can not determine whether the interested MCCH sending in this cycle comprises the interested MBMS session of UE start information, therefore, UE need to obtain MCCH information in the next one MCCH on the horizon repetition period;
When behind UE target approach community, can determine the MCCH information content in the current MCCH amendment cycle time, and while thering is no the interested MBMS session of UE start information in current MCCH information, UE also needs to monitor MCCH update notification message, but UE has missed all MCCH update notification messages in the current MCCH amendment cycle, now, UE should receive MCCH information within the MCCH amendment cycle on the horizon.When behind UE target approach community, UE can not determine that, when whether the MCCH information in the next MCCH amendment cycle on the horizon is upgraded, UE should obtain MCCH information within the next MCCH amendment cycle.
According to the method processing of introducing above, can make UE behind target approach community unclear switch or gravity treatment during MCCH information whether occurred more under news, be conducive to UE and obtain in time MCCH information, check and wherein whether comprised the interested MBMS session of UE start information, if had, can make so UE obtain in time MBMS data.
Application example 2
This application example is described the UE being caused by of short duration interference due to UE and is missed MCCH update notification message, and the reception of missing MCCH information causing is missed MBMS and received.
For waiting for the UE that receives MBMS, monitor MCCH update notification message according to LTE agreement regulation always, as MCCH update notification message notice UE, when MCCH information occurs to upgrade, UE will receive MCCH information within the next one MCCH amendment cycle on the horizon, check the session start information that whether comprises the MBMS oneself waiting in MCCH information.
If but UE is subject to of short duration interference, cause this class UE in all MCCH update notification messages of having missed in one or more MCCH amendment cycle, UE just can not determine in the MCCH amendment cycle on the horizon, whether MCCH information renewal has occurred like this, so UE should obtain MCCH information within the next MCCH amendment cycle in such cases.
Particularly, in LTE system, when in UE can not determine the next MCCH amendment cycle, MCCH information is upgraded due to the MCCH that has new MBMS service conversation start information to cause, UE should at least receive one time MCCH information within the next MCCH amendment cycle, in confirmation MCCH information, whether comprises own interested MBMS session start information;
UE can be being that any one MCCH in the next MCCH amendment cycle locates to receive MCCH information opportunity repetition period, and preferably, UE can be within the next MCCH amendment cycle first MCCH locate reception MCCH information opportunity repetition period.
Whether comprise own interested MBMS session start information in MCCH information in UE can not determine the current MCCH amendment cycle time, UE should receive the MCCH information that in the current MCCH amendment cycle, the next MCCH repetition period is located, further, UE can also at least receive one time MCCH information within the next MCCH amendment cycle.
According to the method processing of introducing above, can make UE be subject to after of short duration interference, in the situation that MCCH update notification message is missed, obtain in time MCCH information and judge the MBMS session start information that whether has comprised oneself needs in MCCH information, if had, can make so UE obtain in time MBMS data.
Application example 3
This application example is described because UE present position is positioned at cell edge or shadow region, causes UE to miss MCCH update notification message, and the reception of missing MCCH information causing is missed MBMS and received.
For waiting for the UE that receives MBMS, monitor MCCH update notification message according to LTE agreement regulation always, as MCCH update notification message notice UE, when MCCH information occurs to upgrade, UE will receive MCCH information within the next one MCCH amendment cycle on the horizon, check the session start information that whether comprises the MBMS oneself waiting in MCCH information.
But, according to current LTE agreement regulation, MCCH update notification message is by Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH) issue, do not support the MBSFN of neighbor cell to merge, so be 2% according to its average Block Error Rate of LTE Simulation Evaluation, particularly in cell edge and shadow region, UE receives probability that MCCH update notification message makes mistakes or sizable.Contrary MCCH information and MBMS data are by Physical Multicast Channel (PhysicalMulticast Channel, referred to as PMCH) issue, and support the MBSFN of neighbor cell to merge, so in cell edge and shadow region, still have good signal quality.
So work as a UE who is monitoring MCCH update notification message, if in cell edge or shadow region, due to the decline of the signal quality of MCCH update notification message, make it may often can not correctly receive MCCH update notification message, cause in the current MCCH amendment cycle and can not correctly know MCCH update notification message, and make to can not determine whether MCCH information is upgraded in the time that the next MCCH amendment cycle arrives.
Like this, according to the present invention, when UE is in the time that the next MCCH amendment cycle arrives, can not determine when in the next MCCH amendment cycle, whether MCCH information is upgraded, should within the next MCCH amendment cycle, receive MCCH information, to determine whether there is own interested MBMS session start information in MCCH information.
According to the method processing of introducing above, can make UE in the time being positioned at cell edge or shadow region, in the situation that MCCH update notification message can not correctly receive, obtain in time MCCH information and judge the MBMS session start information that whether has comprised oneself needs in MCCH information, if had, can make so UE obtain in time MBMS data.
Dang Yuan community is or/and while having multiple MCCH in Target cell, the MCCH amendment cycle of the present invention is the MCCH amendment cycle in the MBSFN region at the interested MBMS of UE place; MCCH of the present invention and relevant information are the interested MCCH of described UE and relevant information, comprise the MCCH of the interested MBMS business of UE, instead of the uninterested MCCH of UE and relevant information thereof.

Claims (10)

1. a method of obtaining control information of multicast, comprising:
Whether comprise own interested multimedia broadcast-multicast service (MBMS) service conversation start information in subscriber equipment cannot be determined by multicast control channel (MCCH) information sending time, described subscriber equipment obtains MCCH information:
Before arriving the opportunity in amendment cycle of the interested MCCH of subscriber equipment, subscriber equipment can not determine that when whether MCCH information is upgraded in the described MCCH amendment cycle on the horizon, described subscriber equipment receives MCCH information within the described MCCH amendment cycle on the horizon;
Or, before arriving the opportunity in amendment cycle of the interested MCCH of subscriber equipment, subscriber equipment can not determine in the described MCCH on the horizon amendment cycle that MCCH information is while upgrading due to the MCCH that has new MBMS service conversation start information to cause, and described subscriber equipment receives MCCH information within the described MCCH amendment cycle on the horizon.
2. the method for claim 1, is characterized in that, described method also comprises:
When whether the MCCH information in subscriber equipment be can not determine the interested MCCH amendment cycle comprises interested MBMS session start information, subscriber equipment MCCH on the horizon repetition period within this MCCH amendment cycle locates to receive MCCH information.
3. the method for claim 1, is characterized in that:
Within the described MCCH amendment cycle on the horizon, receive MCCH information and refer to, first MCCH repetition period within the MCCH amendment cycle on the horizon locates to receive MCCH information;
In the MCCH amendment cycle, comprise multiple MCCH repetition periods.
4. the method for claim 1, is characterized in that, described method also comprises:
When whether the MCCH information in subscriber equipment be can not determine the interested MCCH amendment cycle comprises interested MBMS session start information, subscriber equipment MCCH on the horizon repetition period within this MCCH amendment cycle locates to receive MCCH information.
5. the method for claim 1, is characterized in that:
Described subscriber equipment is to monitor MCCH update notification message to know whether the MCCH information in the MBSFN region at interested MBMS place the subscriber equipment upgrading occurs.
6. a subscriber equipment that obtains control information of multicast, is characterized in that:
Described subscriber equipment, while whether comprising its interested multimedia broadcast-multicast service (MBMS) service conversation start information for determining by multicast control channel (MCCH) information sending, obtain MCCH information: opportunity in amendment cycle of interested MCCH at hand, and can not determine when in this MCCH amendment cycle on the horizon, whether MCCH information is upgraded, within the described MCCH amendment cycle on the horizon, receive MCCH information, or, opportunity in amendment cycle of interested MCCH at hand, and can not determine in the described MCCH on the horizon amendment cycle that MCCH information is while upgrading due to the MCCH that has new MBMS service conversation start information to cause, within the described MCCH amendment cycle on the horizon, receive MCCH information.
7. subscriber equipment as claimed in claim 6, is characterized in that:
Described subscriber equipment is also in the time that whether the MCCH information in the interested MCCH amendment cycle can not determine comprises interested multimedia broadcast-multicast service (MBMS) session start information, and within this MCCH amendment cycle, the MCCH on the horizon repetition period locates to receive MCCH information.
8. subscriber equipment as claimed in claim 6, is characterized in that:
In the described MCCH amendment cycle on the horizon, receive MCCH information and refer to, any one the MCCH repetition period within the MCCH amendment cycle on the horizon locates to receive MCCH information.
9. subscriber equipment as claimed in claim 6, is characterized in that:
Described user establishes, also for:
In the time that whether the MCCH information in the interested MCCH amendment cycle can not determine comprises interested MBMS session start information, within this MCCH amendment cycle, the MCCH on the horizon repetition period locates to receive MCCH information.
10. subscriber equipment as claimed in claim 6, is characterized in that:
Described subscriber equipment is to monitor MCCH update notification message to know whether the MCCH information in the MBSFN region at interested MBMS place the subscriber equipment upgrading occurs.
CN201010143243.2A 2010-03-25 2010-03-25 User equipment and method for acquiring multicast control information Expired - Fee Related CN102202262B (en)

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