WO2009022882A2 - Procédé de communication pour service de diffusion/multidiffusion multimédia - Google Patents

Procédé de communication pour service de diffusion/multidiffusion multimédia Download PDF

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Publication number
WO2009022882A2
WO2009022882A2 PCT/KR2008/004764 KR2008004764W WO2009022882A2 WO 2009022882 A2 WO2009022882 A2 WO 2009022882A2 KR 2008004764 W KR2008004764 W KR 2008004764W WO 2009022882 A2 WO2009022882 A2 WO 2009022882A2
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WO
WIPO (PCT)
Prior art keywords
message
user equipment
communication method
counting
broadcast
Prior art date
Application number
PCT/KR2008/004764
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English (en)
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WO2009022882A3 (fr
Inventor
Sung Duck Chun
Young Dae Lee
Seung Jun Yi
Sung Jun Park
Original Assignee
Lg Electronics Inc.
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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Priority to US12/673,741 priority Critical patent/US20110019604A1/en
Priority claimed from KR1020080079900A external-priority patent/KR20090017995A/ko
Publication of WO2009022882A2 publication Critical patent/WO2009022882A2/fr
Publication of WO2009022882A3 publication Critical patent/WO2009022882A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service

Definitions

  • the present invention relates to a mobile communication system, and more particularly , to a communication method for multimedia broadcast multicast service (MBMS ) counting in a mobile communication system .
  • MBMS multimedia broadcast multicast service
  • the MBMS (multimedia broadcast multicast service) is a kind of broadcast/multicast service, and simultaneously transmits data packets to a plurality of user equipments.
  • a broadcast/multicast service used herein can be replaced with other terminologies such as V MBMS' 'point- to- multipoint service' and "MBS' (multicast and broadcast service) .
  • the MBMS is based on IP multicast, wherein user equipments share resources required for data packet transmission and receive same multimedia data. Accordingly, if a plurality of user equipments, which receive MBMS, exist in the same cell, it is possible to use radio resources efficiently. Since the MBMS is not associated with a RRC connection mode, this service can be provided to even a user equipment which is in an idle mode.
  • the MBMS includes two types of operation modes, i.e., a broadcast mode and a multicast mode.
  • a broadcast mode one transmitter transmits data to all receivers on a single sub-network.
  • the multicast mode one or more transmitters transmit data to one or more specific receivers.
  • a user equipment should transfer its intention to receive data to a network, and can subscribe to a group and leave from the group.
  • the MBMS For effective management of the MBMS, it is necessary to confirm the number of user equipments which desire to receive a specific service. This information can be used to determine an optimized method for broadcast/multicast service. For example, if only a small number of user equipments are interested in the corresponding service, it may be more efficient that a dedicated channel for each user equipment is used to provide the service to each user equipment. On the other hand, if a plurality of user equipments are interested in the corresponding service, it may be more efficient that a common channel is used, wherein the common channel is a point-to-multipoint channel.
  • a counting method (hereinafter, referred to as ⁇ MBMS counting') of user equipments, which desire to receive a specific broadcast/multicast service starts as a network transmits an access information message to the user equipments through an MBMS control channel (MCCH) .
  • MCCH MBMS control channel
  • counting can be performed using a dedicated channel or a RACH.
  • the user equipment which desires to receive the broadcast/multicast service is in an idle state, the user equipment transmits an RRC connection request message to the network according to a random access procedure using the RACH.
  • the RACH is used to transmit data having a short length in an uplink.
  • Some RRC messages such as RRC connection request message, a cell update message, and URA update message are transmitted through the RACH.
  • Logical channels i.e., common control channel (CCCH) , a dedicated control channel (DCCH) , and a dedicated traffic channel (DTCH) can be mapped to the RACH which is a transport channel .
  • the RACH can be mapped to a PRACH which is a physical channel .
  • MAC medium access control
  • the physical layer of the user equipment selects one access slot and one signature and transmits a PRACH preamble in the uplink.
  • the preamble is transmitted for a period of the access slot having a 1.33ms length, and one signature among 16 signatures is selected and transmitted for a first certain length of the access slot.
  • the base station transmits a response signal through an acquisition indicator channel (AICH) which is a downlink physical channel.
  • AICH acquisition indicator channel
  • the AICH transmitted in response to the preamble transmits the signature selected by the user equipment for a first certain period of an access slot corresponding to the access slot for which the preamble is transmitted.
  • the base station transmits a positive acknowledgement (ACK) or a negative acknowledgement (NACK) using the signature transmitted through the AICH.
  • ACK positive acknowledgement
  • NACK negative acknowledgement
  • the user equipment transmits RRC connection request message to the network using allocated radio resources.
  • the network transmits a contention resolution message and a RRC connection setup message to the user equipment.
  • the MAC layer of the user equipment again commands the physical layer of the user equipment to transmit the PRACH after a certain amount of time. Meanwhile, if the user equipment does not receive the AICH corresponding to the transmitted preamble, the user equipment transmits a new preamble at a power higher than that of the previous preamble by one level after a given access slot.
  • a network transmits a RRC access information message for counting in downlink, and a user equipment transmits a RRC connection request message or a RRC cell update message for counting response.
  • a problem occurs in that uplink radio resources are consumed during counting procedure since RRC messages having large overhead are used for counting response.
  • the present invention is directed to a communication method for multimedia broadcast multicast service (MBMS) counting, which substantially obviates one or more problems due to limitations and disadvantages of the related art.
  • MBMS multimedia broadcast multicast service
  • An object of the present invention is to provide a communication method for multimedia broadcast multicast service (MBMS) counting in a mobile communication system, in which overhead and resource waste do not occur during counting procedure of a broadcast/multicast service.
  • MBMS multimedia broadcast multicast service
  • Another object of the present invention is to provide a communication method for multimedia broadcast multicast service (MBMS) counting in a mobile communication system, in which a message having little overhead as compared with the RRC message is used as a response message during counting.
  • MBMS multimedia broadcast multicast service
  • Another object of the present invention is to provide a communication method for multimedia broadcast multicast service (MBMS) counting in a mobile communication system, in which communication related to counting response is performed through an uplink radio resources previously allocated to a user equipment which desires to receive the service .
  • MBMS multimedia broadcast multicast service
  • a communication method for performing communication between a specific user equipment and a network to count the number of user equipments which desire to receive a specific broadcast/multicast service in a mobile communication system is provided.
  • a response message for counting is a lower layer message of an RRC layer not an RRC message during counting procedure related to a broadcast/multicast service.
  • the message is a first layer message and/or second layer message of a network.
  • a communication method for performing communication between a specific user equipment and a network to count the number of user equipments, which desire to receive a specific broadcast/multicast service in a mobile communication system comprises receiving a first message from the network, the first message being transmitted to count the number of user equipments which desire to receive the broadcast/multicast service; and transmitting a second message to the network in response to the first message, the second message being a first layer message or second layer message of the network.
  • a communication method for performing communication in a network of a mobile communication system to count the number of user equipments, which desire to receive a specific broadcast/multicast service comprises transmitting a first message to at least one user equipment, the first message being transmitted to count the number of user equipments which desire to receive the broadcast/multicast service; and receiving a second message from the user equipment in response to the first message, the second message being a first layer message or second layer message of the network.
  • a message having little overhead as compared with a RRC message can be used as a response message during counting procedure.
  • communication for the counting response can be performed using uplink radio resources previously allocated to a user equipment which desires to receive the broadcast/multicast service.
  • FIG. 1 is a diagram illustrating a network structure of an E-UMTS (Evolved-Universal Mobile Telecommunications System) ;
  • FIG. 3 is a diagram illustrating a structure of a radio interface protocol between a user equipment (UE) and E-UTRAN;
  • FIG. 4 is a diagram illustrating an example of a physical channel used in E-UMTS
  • FIG. 5 is a flow chart illustrating a procedure according to the embodiment of the present invention.
  • FIG. 1 illustrates a network structure of an E-UMTS to which the embodiment of the present invention is applied.
  • An E-UMTS is a system evolving from the conventional WCDMA UMTS and its basic standardization is currently handled by the 3GPP (3 rd Generation Partnership Project) .
  • the E-UMTS can also be called an LTE (Long Term Evolution) system. Release 7 and Release 8 of 3GPP technical specifications (3 rd Generation Partnership Project; Technical Specification Group Radio Access Network) can be referred to obtain detailed information about the UMTS and E-UMTS.
  • an E-UMTS includes a user equipment (UE) , a base station and an access gateway (AG) , wherein the access gateway is connected to an external network by being located at an end of the base station.
  • the base station can simultaneously transmit multiple data streams for broadcast service, multicast service and/or unicast service.
  • the AG may be classified into a part for handling user traffic and a part for handling control traffic.
  • an AG for handling user traffic may communicate with another AG for handling control traffic via a new interface.
  • At least one cell exists in one eNB.
  • An interface for transmitting user traffic or control traffic may be used between eNBs .
  • a core network (CN) can include the AG and a network node for registering users of User Equipments (UEs) .
  • An interface for discriminating between the E-UTRAN and the CN may also be used.
  • the AG manages mobility of a UE by unit of a tracking area (TA) .
  • the TA comprises a plurality of cells.
  • TA tracking area
  • the user equipment informs the AG that its tracking area has been changed.
  • FIG. 2 is a schematic view illustrating a network structure of an E-UTRAN (UMTS terrestrial radio access network) to which the embodiment of the present invention is applied.
  • the E-UTRAN system is a system evolving from the conventional UTRAN system.
  • the E-UTRAN includes base stations (eNBs) , wherein respective eNBs are connected with each other through a X2 interface. Also, each of eNBs is connected with a user equipment (UE) through a radio interface and connected with an EPC (Evolved Packet Core) through a Sl interface.
  • UE user equipment
  • EPC Evolved Packet Core
  • the physical layer as the first layer provides information transfer service to an upper layer using physical channels.
  • the physical layer (PHY) is connected to a medium access control (hereinafter, abbreviated as ⁇ MAC ) layer above the physical layer via transport channels.
  • ⁇ MAC medium access control
  • Data is transferred between the medium access control layer and the physical layer via the transport channels.
  • data is transferred between different physical layers, and more particularly, between one physical layer of a transmitting side and the other physical layer of a receiving side via the physical channels.
  • the physical channel of the E-UMTS is modulated in accordance with an orthogonal frequency division multiplexing (OFDM) scheme, and time and frequency are used as radio resources .
  • OFDM orthogonal frequency division multiplexing
  • the medium access control (hereinafter, abbreviated as ⁇ MAC ) layer of the second layer provides a service to a radio link control (hereinafter, abbreviated as 'RLC) layer above the MAC layer via logical channels.
  • the RLC layer of the second layer supports reliable data transmission.
  • IP packets e.g., IPv4 or IPv6
  • L2 a PDCP layer of the second layer
  • a radio resource control (hereinafter, abbreviated as VRRC) layer located on a lowest part of the third layer is defined in the control plane only and is associated with configuration, reconfiguration and release of radio bearers (hereinafter, abbreviated as 1 RBs') in charge of controlling the logical, transport and physical channels.
  • the RB means a service provided by the second layer for the data transfer between the UE and the UTRAN.
  • the RRC layer allows messages to be exchanged between the user equipment and the network. If the RRC layer of the user equipment is connected with the RRC layer of the network, the user equipment is in an RRC connected mode. If not so, the user equipment is in an RRC idle mode.
  • a non-access stratum (NAS) layer located above the RRC layer performs session management and mobility management .
  • NAS non-access stratum
  • One cell constituting eNB is set with one of bandwidths of 1.25Mhz, 2.5Mhz , 5Mhz, lOMhz and 20Mhz, and provides downlink or uplink transfer service to several user equipments. At this time, different cells can be set to have different bandwidths.
  • BCH system information
  • PCH paging channel
  • FIG. 4 is a diagram illustrating an example of a physical channel used in the E-UMTS.
  • a physical channel includes a plurality of sub- frames on a time axis and a plurality of sub-carriers on a frequency axis, wherein one sub-frame includes a plurality of symbols on the time axis.
  • One sub- frame includes a plurality of resource blocks, each of which includes a plurality of symbols and a plurality of sub-carriers.
  • each sub-frame can use specific sub- carriers of specific symbols (for example, first symbols) for a physical downlink control channel (PDCCH), i.e., L1/L2 control channel.
  • PDCCH physical downlink control channel
  • L1/L2 control information transmission region (hatching part) and a data transmission region (non-hatching part) are shown in FIG. 4.
  • the evolved universal mobile telecommunications system which is currently being discussed uses a radio frame of 10ms, wherein one radio frame comprises 10 sub-frames. Also, one sub-frame comprises two continuous slots. One slot has a length of 0.5ms. Furthermore, one sub- frame comprises a plurality of OFDM symbols, and a part (for example, first symbol) of the plurality of OFDM symbols can be used to transmit L1/L2 control information.
  • FIG. 5 is a flow chart illustrating a procedure according to the embodiment of the present invention.
  • FIG. 5 illustrates an example in which technical features of the present invention are applied to user equipment which joins MBMS counting.
  • the base station transmits a first message for counting a user equipment, which desires to receive a specific broadcast/multicast service, to the user equipment, thereby providing the specific broadcast/multicast service [S51] .
  • the MBMS counting is initiated by the first message.
  • a method for resolving overhead caused by MBMS counting procedure in accordance with the embodiment of the present invention can be implemented variously depending on the states of the user equipment. Accordingly, there is no specific limitation of the states of the user equipment which receives the first message.
  • uplink radio resources may be allocated from the base station to the user equipment.
  • the user equipment may be in a CELL-DCH state.
  • the uplink radio resources allocated to the user equipment could be an uplink shared channel (UL SCH) or an uplink dedicated channel (PUCCH, physical scheduling channel, etc.) .
  • the uplink radio resources comprise an uplink dedicated channel.
  • the user equipment desires to receive a broadcast/multicast service, there may be no uplink radio resources previously allocated to the user equipment.
  • the user equipment could be in an idle mode, CELL- FACH mode, CELL_PCH mode, and URAJPCH mode.
  • the user equipment can join the MBMS counting by receiving the first message after being allocated with the uplink radio resources in accordance with a general procedure.
  • the user equipment may be on standby without being allocated with the uplink radio resources until it receives the first message.
  • the user equipment can be allocated with the uplink radio resources through a general procedure, for example, a random access procedure, after receiving the first message.
  • the user equipment which desires to receive a specific broadcast/multicast service, can be categorized as following cases.
  • uplink radio resources are allocated from the base station in accordance with a general procedure before MBMS counting is initiated.
  • (2-ii) uplink radio resources are allocated from the base station in accordance with a random access procedure after MBMS counting is initiated.
  • the above cases (2-i) and (2-ii) can be determined adaptively in accordance with a radio environment. For example, if there is a room for uplink radio resources, (2- i) may be preferred for fast and exact counting. If not so, (2-ii) may be preferred. Also, there may be combination of (2-i) and (2-ii) .
  • user equipments which join MBMS counting could be, for example, (1) and (2-i); (1) and (2-ii) ; (1) , (2-i) and (2-ii) .
  • the user equipments which join MBMS counting are (1) and (2-i) .
  • the counting indicator could be a specific bit indicating '0' or ⁇ l' .
  • the counting indicator could be an original specific bit or bit stream constituting the first message.
  • the specific bit can perform a counting indicating function for MBMS counting together with its original function or regardless of its original function.
  • a part of the first message, which is not associated with MBMS counting can be dedicated as a counting indicator, or some bits of a part associated with MBMS counting can be used as a counting indicator.
  • the counting indicator could be different from an original bit or bit stream constituting the first message.
  • the bit or bit stream can be set in a field, which is not associated with MBMS counting, or a field newly added to the first message, among fields constituting the first message.
  • the counting indicator is a terminology randomly defined to describe the embodiment of the present invention and may be designated as other equivalent terminologies.
  • the first message can include information indicating a specific time interval within which a response of a user equipment to the first message should be transmitted.
  • the time interval By defining the time interval, overhead, time delay, etc., which may occur during MBMS counting, can effectively be resolved. Details of the time interval will be described later with reference to a second message.
  • the first message can be transmitted through a DCCH (Dedicated Control Channel) .
  • the first message can be transmitted through a MCCH or a PDCCH. If the first message is transmitted through the PDCCH, the base station transmits the service identifier and the counting indicator together or separately.
  • the first message is exemplified to be transmitted via a DCCH only, it is to be understood that this is only exemplary, and the first message may be transmitted to the MCCH or the PDCCH.
  • the user equipment If the first message is successfully received by the user equipment and includes a user equipment identifier of the user equipment or a service identifier of a desired service, the user equipment transmits a second message in response to the first message so as to join MBMS counting [S52] .
  • the second message is a first layer (physical layer) message or a second layer (radio data link layer) message of the base station.
  • the second message can include at least one of a counting response indicator indicating that the second message is a response of the first message, a user equipment identifier and a service identifier.
  • the counting response indicator could be a specific bit or bit stream.
  • the counting response indicator could be a specific bit indicating "O' or v l' .
  • the counting response indicator could be an original specific bit or bit stream constituting the second message.
  • the specific bit or bit stream can perform a counting response function for MBMS counting together with its original function or regardless of its original function.
  • a part of the second message, which is not associated with MBMS counting can be dedicated as a counting indicator, or some bits of a part associated with MBMS counting can be used as a counting response indicator.
  • the counting response indicator could be different from an original bit or bit stream, which constitutes the second message.
  • the bit or bit stream can be set in a field, which is not associated with MBMS counting, or a field newly added to the second message, among fields constituting the second message.
  • the counting response indicator is a terminology randomly defined to describe the embodiment of the present invention and may be designated as other equivalent terminologies .
  • a method for using the first layer message or second layer message of the base station as the second message can be classified depending on that information of a specific time interval is included in the first message. Hereinafter, the method will be described in detail.
  • the user equipment transmits the second message to the base station for the specific time interval only.
  • the second message transmitted for the time interval could be a message originally used for MBMS counting or another message for other purpose of use.
  • the base station can interpret the message transmitted for the specific time interval as a response to MBMS counting.
  • a bit, bit stream, bit command or parameter of an uplink message for other purpose of use (for example, scheduling request) can be interpreted as a response to counting for the specific time interval.
  • a specific bit, bit stream, bit command or specific parameter of the uplink message transmitted for the specific time interval can be interpreted as a counting response indicator indicating a response to the first message regardless of its original function.
  • the base station interprets the scheduling request information received for the specific time interval as the response to the MBMS counting.
  • the base station receives scheduling request information for a time interval other than the specific time interval, the base station performs an original scheduling procedure.
  • MAC layer message for example, a specific bit of a MAC header or a MACH control element can be used as the response to the MBMS counting for the specific time interval.
  • a message for buffer status reporting is used for buffer status reporting for a certain time interval other than the specific time interval
  • the message can be used as the response to the MBMS counting for the specific time interval.
  • the message is not used for buffer status reporting for the specific time interval.
  • the message transmitted for the specific time interval is a physical layer signal. If the information of the specific time interval within which the response to the MBMS counting will be transmitted is included in the first message, it is sufficient to notice the physical layer for the specific time interval only, in order to identify the presence of counting response.
  • the base station can quickly identify the response to the MBMS counting.
  • the uplink radio resources established for the user equipment comprise an uplink physical channel dedicated to the user equipment. More preferably, the uplink radio resources established for the user equipment is a PUCCH or a physical scheduling channel.
  • FIG. 6 is a diagram illustrating a structure of MAC PDU according to the embodiment of the present invention.
  • the MAC PDU 600 includes a MAC header 610, MAC control elements 621 and 622, and MAC SDU 630. Also, the MAC PDU 600 optionally includes padding 640. The other parts except for the MAC header 610 constitute MAC payload. Although the MAC control elements 621 and 622 and the MAC SDU 630 are illustrated in FIG. 6, they may not be included in the MAC PDU 600, or a plurality of MAC control elements and MAC SDUs may be included therein.
  • the MAC header 610 can include a plurality of MAC PDU subheaders corresponding to the MAC control elements and MAC SDUs.
  • the MAC PDU subheaders are not shown.
  • the MAC PDU subheaders can be comprised of R/R/E/LCID fields or R/R/E/LCID/F/L fields. In this case, R represents reserved bits, E represents an extension field, LCID represents a logical channel ID field, L represents a length field, and F represents a format field.
  • the MAC control elements 621 and 622 can include buffer status report MAC control element, C-RNTI MAC control element, DRX command MAC control element, UE contention resolution identity MAC control element, timing advance MAC control element, and power headroom MAC control element.
  • the user equipment can include, in the MAC header 610, at least one of the counting response indicator, the user equipment identifier and the service identifier, and can transmit the MAC PDU 600 to the base station.
  • at least one of the counting response indicator, the user equipment identifier and the service identifier is included in at least one of the R/R/E/LCID/F/L fields constituting the MAC header 610.
  • the information of counting response can be included in the field continuously or separately.
  • the information of counting response may be included in a new field added to the R/R/E/LCID or R/R/E/LCID/F/L fields.
  • the user equipment can include at least one of the counting response indicator, the user equipment identifier, and the service identifier in the MAC control elements 621 and 622, and can transmit the MAC PDU 600 for uplink transmission to the base station, wherein the MAC PDU 600 includes the MAC control elements 611 and 612.
  • the information of counting response can be included in at least one of buffer status report MAC control element, C-RNTI MAC control element, DRX command MAC control element, UE contention resolution identity MAC control element, timing advance MAC control element, and power headroom MAC control element.
  • the information of counting response can be included in one MAC control element or several MAC control elements .
  • the uplink radio resources established for the user equipment could be an uplink physical channel dedicated to the user equipment or a shared channel with another user equipment.
  • the uplink radio resources comprise a shared channel, more preferably, UL SCH.
  • the user equipment can include, in the MAC control elements, at least one of the counting response indicator, the user equipment identifier and the service identifier, and can transmit the MAC control elements to the UL SCH, wherein the MAC control elements are included in the MAC PDU for uplink transmission.
  • the user equipment can retransmit the second message at least twice or more within the maximum retransmission count of HARQ.
  • the base station may not transmit HARQ ACK or NACK with respect to the second message.
  • the second message can be transferred to the RRC layer directly after it is received in the first layer and/or the second layer.
  • additional information required for MBMS counting, control information, and counting information related to change of an inner setup value can additionally be interpreted in a physical layer
  • the interpreted counting information is transmitted to the upper layer of the first and second layers of the base station, preferably, to the RRC layer.
  • MBMS counting which is transmitted from the user equipment, is a message of the first layer or the second layer, which is a lower layer, and thus overhead related to the MBMS counting and waste of uplink radio resources can be resolved and fast MBMS counting can be performed.
  • the embodiments of the present invention have been described based on the data transmission and reception between the base station and the user equipment.
  • a specific operation which has been described as being performed by the base station may be performed by an upper node of the base station as the case may be.
  • various operations performed for communication with the user equipment in the network which includes a plurality of network nodes along with the base station can be performed by the base station or network nodes other than the base station.
  • the base station may be replaced with terms such as a fixed station, Node B, eNode B (eNB) , and access point.
  • the embodiments according to the present invention may be implemented by various means, for example, hardware, firmware, software, or their combination. If the embodiment according to the present invention is implemented by hardware, the random access method in the wireless communication system according to the embodiment of the present invention may be implemented by one or more application specific integrated circuits (ASICs) , digital signal processors (DSPs) , digital signal processing devices (DSPDs) , programmable logic devices (PLDs) , field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, etc.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGAs field programmable gate arrays
  • processors controllers, microcontrollers, microprocessors, etc.

Abstract

L'invention concerne un procédé de communication destiné à établir une communication entre un équipement utilisateur spécifique et un réseau pour compter le nombre d'équipements utilisateurs qui souhaitent recevoir un service de diffusion/multidiffusion spécifique dans un système de communication mobile, qui comprend la réception d'un premier message provenant du réseau, le premier message étant transmis pour compter le nombre d'équipements utilisateurs qui souhaitent recevoir le service de diffusion/multidiffusion ; et la transmission d'un second message au réseau en réponse au premier message, le second message étant un message de première couche ou un message de seconde couche du réseau.
PCT/KR2008/004764 2007-08-16 2008-08-14 Procédé de communication pour service de diffusion/multidiffusion multimédia WO2009022882A2 (fr)

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US60/956,302 2007-08-16
KR1020080079900A KR20090017995A (ko) 2007-08-16 2008-08-14 방송/멀티캐스트 서비스 카운팅을 위한 통신 방법
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WO2010027215A2 (fr) * 2008-09-05 2010-03-11 Electronics And Telecommunications Research Institute Procédé et dispositif de gestion d'un service en diffusion et multidiffusion
EP2302960A1 (fr) * 2009-09-24 2011-03-30 NEC Corporation Procédé de comptage pour diffusion de système hétérogène
WO2011147239A1 (fr) * 2010-05-25 2011-12-01 刘建 Procédé et système de mise en œuvre de mécanisme de rétroaction en liaison montante de service de diffusion/multidiffusion multimédia
US8804592B2 (en) 2008-09-05 2014-08-12 Electronics And Telecommunications Research Institute Method and device for managing of multicast and broadcast service
US8908713B2 (en) * 2010-09-30 2014-12-09 China Academy Of Telecommunications Technology Methods for requesting and responding to multimedia broadcast multicast service (MBMS) counting
US8937895B2 (en) 2010-01-08 2015-01-20 Fujitsu Limited Method and apparatus for performing carrier management in carrier aggregation system

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