WO2012137078A2 - Procédé et appareil de transmission et de réception de messages relatifs à un service mbms - Google Patents

Procédé et appareil de transmission et de réception de messages relatifs à un service mbms Download PDF

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Publication number
WO2012137078A2
WO2012137078A2 PCT/IB2012/000902 IB2012000902W WO2012137078A2 WO 2012137078 A2 WO2012137078 A2 WO 2012137078A2 IB 2012000902 W IB2012000902 W IB 2012000902W WO 2012137078 A2 WO2012137078 A2 WO 2012137078A2
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WO
WIPO (PCT)
Prior art keywords
mbms service
cell
information
service
information element
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Application number
PCT/IB2012/000902
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English (en)
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WO2012137078A3 (fr
Inventor
He Wang
Chandrika Worrall
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Alcatel Lucent
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel Lucent filed Critical Alcatel Lucent
Publication of WO2012137078A2 publication Critical patent/WO2012137078A2/fr
Publication of WO2012137078A3 publication Critical patent/WO2012137078A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present invention relates to multimedia broadcast multicast service (MBMS)
  • the present invention relates to a method and apparatus for transmitting and receiving MBMS service -related messages, so as to ensure that a MBMS capable user equipment receives MBMS services.
  • the third generation partnership project (3GPP) has defined MBMS that is for delivering multimedia contents simultaneously to a large set of receivers. 3GPP has disclosed a MBMS
  • Carrier aggregation is a type of technology in LTE-A, which serves a user equipment (UE) through aggregating a plurality of carriers. It is well known that in a multicast broadcast single frequency network (MBSFN), all UEs may receive MBMS (multimedia broadcast multicast service) services.
  • MBSFN multicast broadcast single frequency network
  • SA Service Area
  • MBSFN area it defines a geographic area that provides a MBMS service.
  • MBSFN area it combines service area and frequency layer (or component carrier (CC) under the carrier aggregation (CA)), wherein MBSFN transmission defines the geographic area and frequency band for the MBMS service. Therefore, it may be clear that MBSFN area and service area are both service-specific, instead of UE-specific. Further, both of MBSFN area and service area correspond to specific geographic areas.
  • a plurality of CCs may be arranged in a same service area (same geographic area).
  • a primary cell (PCell) and secondary cell(s) (SCell) are defined for a UE.
  • PCell primary cell
  • SCell secondary cell(s)
  • Different UEs in a service area have different primary cells according to their respective channel conditions. Therefore, it is clear that the PCell and the SCell in a service area are UE specific.
  • the current MBMS service provision is always pre -configured in a determined frequency carrier.
  • such solution has the following problems. Different UEs are connected to different primary cells (different CC cells) due to different channel conditions, and different CCs will be arranged in different neighboring cells, it would be impossible to enable all MBMS capable UEs in a geographic area to receive all MBMS services. Further, a UE connected to a CC cell cannot obtain the full knowledge of the MBMS service provision information in the service area (geographic location area).
  • a UE connected to its primary cell can only obtain the MBMS service -related message provided by its primary cell and further receives the MBMS service (in the case of existence) provided by its primary cell, but cannot obtain the relevant message of the MBMS service (in case of existence) provided by a secondary cell to which it is not connected, and thus cannot receive the MBMS service provided by the secondary cell.
  • an objective of the present invention is to provide a solution so as to provide a method and apparatus for transmitting and receiving a MBMS service-related message, thereby ensuring that a MBMS capable UE may obtain relevant information of all MBMS services in its service area
  • the information element is a new element of the MBMS control channel MCCH message.
  • the information element is included in a system information block SIB5 or SIB 13.
  • a MBMS capable user equipment is enabled to obtain all MBMS service-related MBMS service information in the service area where it is located and to further receive the interested MBMS service based on the MBMS service information.
  • FIG. 1 schematically illustrates an environment in which the present invention may be implemented
  • FIG. 2 schematically illustrates a flow chart of a method for transmitting a message to a UE according to an embodiment of the present invention
  • FIG. 3 schematically illustrates an apparatus of a method for transmitting a message to a UE according to an embodiment of the present invention
  • FIG. 4 schematically illustrates a flow chart of a method for receiving a message according to embodiments of the present invention
  • FIG. 5 schematically illustrates a block diagram of an apparatus for receiving a message according to embodiments of the present invention.
  • Fig. 1 schematically illustrates an environment in which the present invention may be implemented.
  • service area 1 includes MBSFN area 1 that provides MBMS service 1, non-MBSFN area 2 that provides no MBMS services, and MBSFN area 3 that provides MBMS service 2. It should be understood that the service area may comprise any number of MBFN areas or non-MBSFN areas.
  • Cell 1 and cell 2 form the MBSFN area 1 in the service area 1, in which MBSFN area 1 the MBMS service 1 is provided to a UE connected to node B of cell 1 or cell 2 through CC 1.
  • the cell 3 forms a non-MBSFN area in the service area 1, in which non-MBSFN area a non-MBFN service is provided to a UE connected to node B of cell 3 through CC 2, without providing any MBMS services.
  • Cell 4 and cell 5 form the MBSFN area 2 in the service area 1, in which MBSFN area 2 the MBMS service 2 is provided to a UE of node B of cell 4 or cell 5 through CC 3. It should be understood that in the MBSFN area or in the non-MBSFN area, any number of cells may be included, and each cell may comprise any number of UEs. In order not to confuse the present invention, node B is not shown in this figure.
  • user equipment UE 11 connected to node B of cell 1 can only obtain MBMS service information on MBMS service 1 and receive the MBMS service 1.
  • UE 11 is located in the service area 1, it cannot obtain information on other MBMS services (for example, MBMS service 2) in the service area 1, and then cannot receive MBMS service 2.
  • user equipment UE 41 connected to node B of cell 4 can only obtain MBMS service information on MBMS service 2 and receive the MBMS service 2.
  • UE 41 is located in the service area 1, it cannot obtain information on other MBMS services (for example, MBMS service 1) in the service area 1, and then cannot receive MBMS service 1.
  • cell 3 is a non-MBMS service cell, although user equipment UE 31 is located in service area 1, it cannot obtain MBMS service information related to any MBMS services (for example, MBMS service 1 and MBMS service 2) in the service area 1 or receive any MBMS services.
  • MBMS service 1 and MBMS service 2 for example, MBMS service 1 and MBMS service 2.
  • the information on MBMS service of other neighboring cells may be directly transmitted over the MCCH of cell 1 of the current CC 1.
  • an MBMS service may be uniquely identification by MBMS service ID information, preferably, according to the embodiments of the present invention, only a message of the MBMS service ID information of the other neighboring CC cell, not the whole MBMS service configuration information itself, is transmitted to a UE (for example, user equipment UE11).
  • a UE for example, user equipment UE11
  • FIG. 2 schematically illustrates a flow chart of a method for transmitting a message to a UE according to one embodiment of the present invention.
  • the method 200 as shown in Fig. 2 is implemented in the environment as for example illustrated in Fig. 1.
  • the service area in which the method 200 is applied comprises a plurality of CC cells with carrier aggregation, wherein the current cell where the UE is located is a cell of the plurality of CC cells, and the message is a message of MBMS service information of one or more neighboring cells which are located in a service area of the same geographic area as the current cell.
  • the method 200 comprises: step S210, defining an information element of the message, wherein the information element comprises MBMS service ID information of the MBMS service and corresponding cell ID information; and step S220, transmitting the information element to the UE.
  • the message as defined according to the method of the present invention is transmitted to the user equipment UE11 in the service area 1, wherein the user equipment UE11 is located in the current cell, and the current cell 1 where the user equipment UE 11 is located is a cell of the plurality of CC cells.
  • the message is a MBMS service -related message of one or more neighboring cells (cell 2, cell 3, cell 4 and/or cell 5, etc.) in the service area 1 which are located in the same geographic area as the current cell 1 ; different MBMS services (for example, MBMS service 1 or 2, etc.) are provided in the cell 1 and the neighboring cells through different CCs (for example, CC 1, 2, or 3) or no MBMS service is provided (for example, cell 3).
  • the information element of the message is defined, wherein the information element may comprise MBMS service ID information of a MBMS service (for example, MBMS service 2) of a neighboring cell.
  • the information element may further comprise cell ID information of a neighboring cell (for example, cell 4 and cell 5) to which the corresponding CC belongs. Then, the information element is transmitted to the user equipment UE11.
  • the information element is a new information element of the MCCH message, for example
  • neighborCellMbmsInfoList information element, for indicating MBMS service information of the neighboring cell.
  • the information element is transmitted to a UE of the cell over the MCCH channel, so as to enable the UE to obtain the MBMS service information of the neighboring cell.
  • the new MCCH information element may comprise MBMS service ID information and the corresponding ID information.
  • the MBMS service ID information may comprise inter-cell neighboring cell MBMS service ID information and intra-frequency neighboring cell MBMS service ID information.
  • the "neighCellMbmsInfoList” information element may be defined in detail as follows:
  • mbms-ServiceldList SEQUENCE (SIZE(1.. maxMB SFN-Area*maxPMCH-PerMB SFN*maxSessionPerPMCH))
  • the method according to the present invention further comprises: modifying the definition of the current SIB 13 to indicate MCCH configuration information to a cell that does not belong to any MBSFN area (namely, not providing the MBMS service); of course, SIB 13 may also directly comprise the MBMS service-related information of other neighboring cells. More specifically, the method according to the present invention may modify the value range of the information element "MBSFN-ArealnfoList" of SIB 13, such that the SIB 13 comprises an empty MBSFN area information list indicating that the CC cell does not belong to any MBSFN area.
  • a default value may be defined for a MBSFN area-related information element in system information block SIB 13, where the default value indicates that the CC cell does not belong to any MBSFN area, wherein the MBSFN area being an area which provides a MBMS service.
  • the default value indicates that the CC cell does not belong to any MBSFN area, wherein the MBSFN area being an area which provides a MBMS service.
  • the default value is transmitted to the current cell, such that the current cell has a MCCH channel; therefore, the user equipment UE 31 obtains information element of the MBMS service ID of a cell of other neighboring CC and receives the corresponding MBMS service based on the information element.
  • the information element related to the MBMS service in the neighboring cell might not be transmitted over the MCCH channel; instead, the information element related to the MBMS service in the neighboring cell is included in system information block to be signalled to a UE of a CC cell in the service area.
  • the method 200 comprises: including a new information element in SIB 13 to signal the information of the MBMS service provided by the neighboring cell, where the information element, for example, may be indicated as
  • the method 200 comprises: including the information element related to the MBMS service provided by the neighboring cell in SIB 5 to be signaled.
  • SIB 5 system information block type 5
  • SIB 5 may be utilized to notify a user in the CC cell of relevant information of the MBMS service of the neighboring cell.
  • SIB 5 may comprise the inter-frequency carrier-related information of all neighboring cells comprising the CC.
  • SIB 5 comprises detailed definition of "mbms-ServiceldList”:
  • InterFreqCarrierFreqList :: SEQUENCE (SIZE (L.maxFreq)) OF InterFreqCarrierFreqlnfo
  • InterFreqNeighCellList SEQUENCE (SIZE (l..maxCellInter)) OF InterFreqNeighCelllnfo
  • InterFreqBlackCellList :: SEQUENCE (SIZE (l..maxCellBlack)) OF PhysCellldRange
  • the newly added field "mbms-ServiceldList” indicates the MBMS service ID information list of the MBMS service provided by the inter-frequency neighboring cell.
  • SIB 5 or SIB 13 In the service area, when a service session starts or stops, information element modification of SIB 5 or SIB 13 is triggered.
  • the node B updates SIB 5 or SIB 13 (dependent on whether SIB 5 or SIB 13 is modified), and the update is transmitted to the UE through a paging message. Additionally, the node B also transmits the modified SIB 5 or SIB 13 to the UE.
  • FIG. 3 schematically illustrates a block diagram of an apparatus for transmitting a message to a UE according to an embodiment of the present invention.
  • the apparatus 300 as illustrated in Fig. 3 is implemented in the environment as for example illustrated in Fig. 1.
  • the service area in which the apparatus 300 is applied comprises a plurality of CC cells with carrier aggregation, wherein the current cell where the UE is located is a cell of the plurality of CC cells, and the message is a message of MBMS service information of one or more neighboring cells that are located in the service area of the same geographic area as the current cell.
  • the apparatus 300 comprises means 310 for defining an information element of the message, wherein the information element comprises MBMS service ID information of the MBMS service and corresponding cell ID information; and means 320 for transmitting the information element to the UE.
  • the information element is a new information element of a MBMS control channel MCCH message.
  • the apparatus 300 may further comprise means 325 for modifying a system information block SIB 13 so as to indicate MCCH configuration information to a CC cell that does not belong to any MBSFN area, wherein the MBSFN area is an area that provides the MBMS service.
  • the apparatus 300 may further comprise means (not shown) for modifying value range of information element "MBSFN-ArealnfoList" of the system information block 13, such that the system information block SIB 13 comprises an empty MBSFN area information list which indicates that the CC cell does not belong to any MBSFN area.
  • the apparatus 300 further comprises means for defining a default value for a MBSFN area - related information element in system information block SIB 13, the default value indicating that the CC cell does not belong to any MBSFN area, wherein the MBSFN area is an area that provides the MBMS service, and for transmitting the default value to the current cell if the current cell does not belong to any MBSFN area, such that the current cell has a MCCH channel.
  • the message is transmitted over the MCCH channel of the current cell.
  • the apparatus 300 further comprises means 345 for including the information element in system information block SIB 5.
  • the apparatus 300 further comprises means 350 for triggering SIB 5 information element modification at the start or stop of a service session and means for updating SIB 5 and transmitting the update to the UE through a paging message.
  • the apparatus 300 further comprises means for including the information element in system information block SIB 13.
  • the apparatus 300 further comprises means for triggering SIB 13 information element modification at the start or stop of a service session and means for updating SIB 13 and transmitting the update to the UE through a paging message.
  • the apparatus 300 of the present invention corresponds to the method 200. Therefore, in order to confuse the present invention, details of the technical features identical to those of method 200 are omitted. For example, the field definitions about system information block SIB 5, etc.
  • Fig. 4 schematically illustrates a flow chart of a method for receiving a message according to embodiments of the present invention.
  • the method 400 according to Fig. 4 is implemented in the environment as for example illustrated in Fig. 1.
  • the service area in which the method 400 is applied comprises a plurality of CC cells with carrier aggregation, wherein the current cell where the UE is located is a cell of the plurality of CC cells, and the message is a message of MBMS service information of one or more neighboring cells that are located in a service area of the same geographic area as the current cell.
  • the method 400 comprises step S410 of receiving the information element, wherein the information element comprises MBMS service ID information of the MBMS service and corresponding cell ID information; and step S420 of obtaining MBMS service ID of the neighboring cell based on the information element; and step S430 of acquiring a corresponding MBMS service based on the MBMS service ID.
  • the step S430 of acquiring a corresponding to MBMS service based on the MBMS service ID further comprises step S435 of searching for an interested MBMS service of a neighboring cell based on the MBMS service ID; step s440 of determining whether the interested MBMS service of the neighboring cell exists; in the case of existing, switching to the neighboring cell to obtain the corresponding MBMS service. In the case of not existing, the UE continues staying in the current cell (step S465).
  • the switching step further comprises: step S450 of measuring channel condition of the neighboring cell providing the interested MBMS service.
  • step S445 of checking a wireless resource management policy to preliminarily determine whether to switch. In the case of not switching, the UE continues staying in the current cell (step S465). If the channel condition is measured and it is determined whether to perform switching, then at step S445, it is determined whether the measured channel condition exceeds a switching threshold. If the channel condition exceeds the switching threshold, then the switching operation is performed at step S460. In the case of not exceeding, the UE continues staying in the current cell (step S465).
  • the UE is a MBMS capable UE.
  • Fig. 5 schematically illustrates a block diagram of an apparatus for receiving a message according to embodiments of the present invention.
  • the apparatus 500 as illustrated in Fig. 5 is implemented in the environment as for example illustrated in Fig. 1.
  • the service area in which the apparatus 500 is applied comprises a plurality of CC cells with carrier aggregation, wherein the current cell where the UE is located is a cell of the plurality of CC cells, and the message is a message of MBMS service information of one or more neighboring cells that are located in a service area of the same geographic area as the current cell.
  • the apparatus 500 comprises means 510 for receiving the information element, wherein the information element comprises MBMS service ID information of the MBMS service and corresponding cell ID information; and means 520 for obtaining MBMS service ID of the neighboring cell based on the information element; and means 530 for acquiring the information element.
  • the means 530 for acquiring a corresponding to MBMS service based on the MBMS service ID further comprises means for searching for an interested MBMS service of a neighboring cell based on the MBMS service ID; means for determining whether the interested MBMS service of the neighboring cell exists; and means for switching to the neighboring cell to obtain the corresponding MBMS service in the case of existing.
  • the means for switching further comprises means for measuring channel condition of a neighboring cell providing an interested MBMS service. Means for determining whether the measured channel condition exceeds the switching threshold; in the case of exceeding, the means for switching performs the switching.
  • the apparatus is a UE.
  • the UE is a MBMS capable UE.
  • the apparatus 500 of the present invention corresponds to the method 400. Therefore, in order to confuse the present invention, details of the technical features similar to those of method 400 are omitted.
  • the program storage means may be a magnetic storage medium, for example, a disc, a tape, a hard disk driver, or an optical readable digital data storage medium.
  • the embodiments also intend to cover a computer that is programmed to perform the steps of the method.

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

Abstract

La présente invention porte sur des procédés et des appareils pour transmettre et recevoir des informations relatives à un service MBMS. Dans une zone de desserte, une pluralité de cellules à porteuses composantes à agrégation de porteuses sont comprises, une cellule courante dans laquelle se trouve l'équipement utilisateur étant une cellule de la pluralité de cellules à porteuses composantes et le message étant un message pour des informations de service MBMS d'une ou plusieurs cellules voisines qui se trouvent dans une zone de desserte d'une même zone géographique que la cellule courante. Le procédé de transmission consiste à définir un élément d'informations du message, l'élément d'informations comprenant des informations d'identificateur (ID) de service MBMS du service MBMS et des informations ID de cellule correspondante ; recevoir un élément d'informations, l'élément d'informations comprenant des informations ID de service MBMS du service MBMS et des informations ID de cellule correspondante ; obtenir un ID de service MBMS de la cellule voisine sur la base de l'élément d'informations ; et acquérir un service MBMS correspondant sur la base de l'ID de service MBMS.
PCT/IB2012/000902 2011-04-04 2012-03-30 Procédé et appareil de transmission et de réception de messages relatifs à un service mbms WO2012137078A2 (fr)

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Application Number Priority Date Filing Date Title
CN201110085886.0 2011-04-04
CN201110085886.0A CN102740232B (zh) 2011-04-04 2011-04-04 发送和接收mbms业务相关消息的方法和设备

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WO2012137078A3 WO2012137078A3 (fr) 2012-11-29

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US9980247B2 (en) 2012-10-26 2018-05-22 Qualcomm Incorporated Primary cell signaling for eMBMS in carrier aggregation
EP3373605A4 (fr) * 2015-11-02 2018-09-12 ZTE Corporation Procédé et appareil de transfert de service
US10111049B2 (en) 2012-10-26 2018-10-23 Qualcomm Incorporated Multiband eMBMS enhancement using carrier aggregation
CN109429185A (zh) * 2017-08-30 2019-03-05 成都鼎桥通信技术有限公司 Mbsfn群组信令发送方法及装置
US10257813B2 (en) 2012-10-05 2019-04-09 Qualcomm Incorporated Apparatus and method for deferring cell update messages from user equipment
US10575042B2 (en) 2015-11-27 2020-02-25 British Telecommunications Public Limited Company Media content synchronization
US10728714B2 (en) 2016-03-31 2020-07-28 British Telecommunications Public Limited Company Mobile communications network
US10771298B2 (en) 2016-08-04 2020-09-08 British Telecommunications Public Limited Company Mobile communications network
US10924892B2 (en) 2015-11-05 2021-02-16 Huawei Technologies Co., Ltd. Group communications method, device, and system
US11234240B2 (en) 2018-06-08 2022-01-25 British Telecommunications Public Limited Company Wireless telecommunications network
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Cited By (14)

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Publication number Priority date Publication date Assignee Title
US10257813B2 (en) 2012-10-05 2019-04-09 Qualcomm Incorporated Apparatus and method for deferring cell update messages from user equipment
US10111049B2 (en) 2012-10-26 2018-10-23 Qualcomm Incorporated Multiband eMBMS enhancement using carrier aggregation
US9980247B2 (en) 2012-10-26 2018-05-22 Qualcomm Incorporated Primary cell signaling for eMBMS in carrier aggregation
EP3373605A4 (fr) * 2015-11-02 2018-09-12 ZTE Corporation Procédé et appareil de transfert de service
US10924892B2 (en) 2015-11-05 2021-02-16 Huawei Technologies Co., Ltd. Group communications method, device, and system
US10575042B2 (en) 2015-11-27 2020-02-25 British Telecommunications Public Limited Company Media content synchronization
US11477700B2 (en) 2016-03-31 2022-10-18 British Telecommunications Public Limited Company Mobile communications network
US10728714B2 (en) 2016-03-31 2020-07-28 British Telecommunications Public Limited Company Mobile communications network
US11589269B2 (en) 2016-03-31 2023-02-21 British Telecommunications Public Limited Company Mobile communications network
US11510116B2 (en) 2016-06-29 2022-11-22 British Telecommunications Public Limited Company Multicast-broadcast mobile communications network
US10771298B2 (en) 2016-08-04 2020-09-08 British Telecommunications Public Limited Company Mobile communications network
CN109429185A (zh) * 2017-08-30 2019-03-05 成都鼎桥通信技术有限公司 Mbsfn群组信令发送方法及装置
CN109429185B (zh) * 2017-08-30 2021-08-03 成都鼎桥通信技术有限公司 Mbsfn群组信令发送方法及装置
US11234240B2 (en) 2018-06-08 2022-01-25 British Telecommunications Public Limited Company Wireless telecommunications network

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WO2012137078A3 (fr) 2012-11-29
TW201246967A (en) 2012-11-16
TWI468045B (zh) 2015-01-01
CN102740232A (zh) 2012-10-17
CN102740232B (zh) 2017-06-23

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