WO2007102060A2 - Signalisation montante pour une transmission multidiffusion - Google Patents

Signalisation montante pour une transmission multidiffusion Download PDF

Info

Publication number
WO2007102060A2
WO2007102060A2 PCT/IB2007/000476 IB2007000476W WO2007102060A2 WO 2007102060 A2 WO2007102060 A2 WO 2007102060A2 IB 2007000476 W IB2007000476 W IB 2007000476W WO 2007102060 A2 WO2007102060 A2 WO 2007102060A2
Authority
WO
WIPO (PCT)
Prior art keywords
serving
cell
multicast
uplink message
network element
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2007/000476
Other languages
English (en)
Other versions
WO2007102060A3 (fr
Inventor
Johanna Pekonen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Inc
Original Assignee
Nokia 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
Priority claimed from US11/499,652 external-priority patent/US20080031245A1/en
Application filed by Nokia Inc filed Critical Nokia Inc
Publication of WO2007102060A2 publication Critical patent/WO2007102060A2/fr
Publication of WO2007102060A3 publication Critical patent/WO2007102060A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04L12/1836—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture
    • 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
    • H04L12/1886—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to a method, system, terminal device and network element for signaling uplink control data for a multicast transmission of a cellular network.
  • the present invention relates to - but is not restricted to - uplink signaling in a Multimedia Broadcast and Multicast Service (MBMS).
  • MBMS Multimedia Broadcast and Multicast Service
  • the Universal Mobile Telecommunications System (UMTS) specified by the third generation partnership project (3GPP) shall offer appealing multimedia services. When many users want to receive the same multimedia services at the same time, like news services, even high bandwidth UMTS radio resources might run into shortage. Efficiency of resource allocation can be improved when many radio channels transfer data in parallel to different users within the same radio cell. A resource and therefore cost efficient delivery of multimedia services to a large number of users in parallel is given by broadcast or multicast services.
  • 3GPP defined MBMS as a service which shares network resources, specifically radio resources, when transferring data to many users in parallel.
  • MBMS is an Internet Protocol (IP) datacast type of service that can be offered via existing cellular networks, such as Global System for Mobile Communications (GSM) or UMTS networks.
  • IP Internet Protocol
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • a broadcast service can be generalized to mean a unidirectional point- to-multipoint service in which data is transmitted from a single source to multiple terminals, e.g. user equipment (UE) in third generation terminology, in the associated broadcast service area.
  • broadcast services can be called push-type services.
  • a multicast service can be defined as a unidirectional point-to-multipoint service in which data is transmitted from a single source to a multicast group in the associated multicast service area. Only the users that are subscribed to the specific multicast service and have joined the multicast group associated with the service can receive the multicast services.
  • a broadcast service can be received without separate indication from the customers.
  • This counting procedure can be executed several ways. Typically, the network indicates at the start of the MBMS session during the MBMS Notification procedure, that counting is initiated and the interested terminals (or certain amount of the interested terminals) will respond to the counting request by using uplink signaling resources.
  • the counting (or re-counting) procedure can be used e.g.
  • This counting information can be used to optimize the data transmission: e.g. the radio resources are not allocated to a particular MBMS service in a cell, in which there are no interested users to receive data for that particular MBMS service.
  • multicast users need a return channel for the interaction procedures in order to be able to respond to the counting requests, which are received at the session start as part of the MBMS notifica- tion or then during the MBMS session as a separate procedure.
  • MBMS thus can be defined as a unidirectional point-to-multipoint service in which data is transmitted from a single source entity to a group of users in a specific area.
  • MBMS has two modes in practice: broadcast mode and multicast mode.
  • OFDM Orthogonal Frequency Division Multiple Access
  • the Multimedia Broadcast/Multicast Services have the possibility to optimize the allocated resources for the data transmission by using Point-to-Multipoint transmission in case there is more than one user interested to get certain data flow in the same cell.
  • 3GPP Release 6 MBMS solution it is assumed that the MBMS data and the user specific point-to-point connections are transmitted or routed through the same cell and the terminal device uses the same receiver for unicast and MBMS recep- tion.
  • the separate MBMS receiver in the terminals is an approach similar to DVB-H, where a separate DVB-H receiver is included in a cellular mobile device.
  • the Release 6 MBMS solution contains several procedures which require uplink signalling from the terminal device towards the network.
  • One of these procedures is e.g. response to a counting request at the session start or during recounting.
  • the terminal device With a response message to the counting request, the terminal device indicates that it is interested to receive the starting MBMS session through a par- ticular MBMS cell which is sending the counting request.
  • This uplink signalling for responding to a counting request can be necessary, if optimization in resource allocation for data transmission is required.
  • the Release 6 based solution in MBMS is, that the terminal device responds through the MBMS cell, which is requesting for the counting. But, as the approach of having more than one transmitter on in the terminal device at the same time is not possible due to the complexity in the terminal implementation, the terminal device cannot respond to the counting request received from the serving MBMS cell.
  • a system for signaling uplink control data for a multicast transmission of a cellular network comprising the steps of:
  • adding means adding an identification of a serving multicast cell to an uplink message
  • transmitting means for transmitting said uplink message in a transparent manner over a serving unicast cell to said cellular network
  • forwarding means for forwarding said uplink message to a serving network element of said serving multicast cell based on said added identification.
  • a terminal device for signaling uplink control data for a multicast transmission of a cellular network, said terminal device being configured to add an identification of a serving multicast cell to an uplink message, and to transmit said uplink message in a transparent manner over a serving unicast cell to said cellular network.
  • a network element for serving a unicast cell of a cellular network said network element being configured to detect a cell identification of a received transparent uplink message and to forward said trans- parent uplink message to a serving network element of a multicast cell based on said detected cell identification.
  • the terminal device can use the serving unicast cell for any multicast- related uplink signalling.
  • the terminal device For any uplink response or other uplink signaling the terminal device sends a message transparently over the serving unicast cell to the serving multicast cell or to the network entity controlling the radio resource allocation of the serving multicast cell (e.g. to RNC in UTRAN) .
  • Uplink signaling can thus be supported, even if the terminal device has a separate multicast receiver in addition to the unicast transceiver.
  • the uplink message may be forwarded via a direct connection from a serving network element of the serving unicast cell to the serving network element the of the serving multicast cell.
  • the uplink message may be forwarded from the serving network element of the serving unicast cell via an access gateway element or serving support node to the serving network element of the serving multicast cell.
  • the uplink message may transmitted in response to a multicast notification received via a common control channel. More specifically, this multicast notification may contain a counting request and the uplink message may be a counting response. Then, the multicast notification may comprise the identification which may comprise, for example, a cell ID of the serving multicast cell or an IP address of the serving network element of the serving multicast cell.
  • Fig. 1A and Fig 1B show alternative schematic block diagrams of an MBMS archi- tecture in which the present invention can be implemented.
  • Fig. 2 shows a schematic signaling diagram for delivery of multicast related uplink signaling according to the preferred embodiment.
  • the preferred embodiment will now be described based on an MBMS service in a UTRAN Release-6 and a UTRAN LTE (UMTS Terrestrial Radio Access Network Long Term Evolution) or 3.9G environment.
  • UTRAN LTE UMTS Terrestrial Radio Access Network Long Term Evolution
  • Fig. 1 A shows a schematic block diagram of a general MBMS architecture in relation to the UTRAN Release-6 MBMS architecture, in which the invention can be implemented.
  • Fig. 1B shows a schematic block diagram of an alternative MBMS architecture in relation to the UTRAN LTE or 3.9G.
  • content sources 70 such as Internet servers or the like, supply MBMS content to a broadcast multicast service center (BM-SC) 60.
  • the BM-SC 60 provides MBMS user service, i.e., delivering service data and performing related control actions.
  • the BM-SC 60 comprises functions for MBMS user service provisioning and delivery. It may serve as an entry point for content provider MBMS transmissions, used to authorize and initiate MBMS bearer services within the cellular network, and can be used to a schedule and deliver MBMS transmissions.
  • the BM-SC 60 is able to schedule MBMS session retransmissions, and label each MBMS session with an MBMS session identifier to allow user equipments (UEs) 10 to distinguish MBMS session retransmissions. These retransmissions are transparent to the radio access network and MBMS user service (MBMS-US).
  • MBMS-US MBMS user service
  • the MBMS-US covers applications for delivering content data to many users, e.g. news services, audio or video clips, etc. It is to a large extent independent from the user transport services, as long as IP multicast is compatible. Moreover, MBMS- US provides means for user authorization, charging and quality of service (QoS) improvement and prevents unauthorized reception by encryption or digital rights management (DRM). On the other hand, the MBMS-BC provides an IP multicast like transport service for MBMS user services. It maintains a one to many data distribution tree into all necessary radio cells and may provide transport related charging.
  • QoS quality of service
  • DRM digital rights management
  • the MBMS content is not delivered to one of the base station devices 20, which may be outside the area specified for the actually transmitted MBMS content.
  • the UEs 10 support functions for activating/deactivating the MBMS bearer service based on a MBMS bearer control signaling (MBMS-BC). Once a particular MBMS bearer service is activated no further explicit user request is required to receive MBMS data, although the user may be notified that data transfer is about to start.
  • the UEs 10 may support security functions as appropriate for MBMS. Depending on terminal capabilities, the UEs 10 may be able to receive MBMS user service announcements, paging information or support simultaneous services. Based on the MBMS session identifier contained in the notification, the UEs 10 are able to decide whether they need to ignore the forthcoming transmission of MBMS session, e.g., because the respective UE has already received this MBMS session.
  • Each UE 10 comprises a user service part (USP) for handling application signaling of MBMS-US and a bearer service part (BSP) for handling MBMS-BC signaling.
  • the BM-SC 60 comprises a USP for application signaling and a BSP for bearer control signaling. This bearer control signaling is routed via the packet switched domain of the core network and the radio access network to the BSP of the UEs 10. It is noted that in Fig. 1A, every UE 10 comprises the USP and BSP, which have been omitted in the other UEs 10 for reasons of simplicity.
  • the bearer control signaling is routed via a General Packet Radio Services (GPRS) support node (GGSN) 50 and a Serving GPRS support node (SGSN) 40 to the UEs 10. Based on this MBMS bearer control signaling, a one to many data distribution tree indicated by the bigger arrows is maintained so as to provide the MBMS content to specific areas or cells of the cellular network.
  • the radio access network (RAN) part comprises base station devices 20, e.g. a node B or base transceiver station (BTS), for providing an air interface for radio transmission to respective UEs 10 within their areas of coverage.
  • the base station devices 20 are connected to network controller devices 30, e.g. a base station controller (BSC) or a radio network controller (RNC) for switching purposes, which are connected to the SGSNs 40.
  • BSC base station controller
  • RNC radio network controller
  • the data stream with the MBMS content is delivered via an access gateway 130, such as an Enhanced UTRAN (E-UTRAN) Access Gateway (aGW) and a radio access network (RAN) part to the respective ones of the UEs 10.
  • E-UTRAN Enhanced UTRAN
  • aGW Access Gateway
  • RAN radio access network
  • the aGW 130 in the E-UTRA architecture has similarities with the SGSN 40 in UTRAN Release-6 architecture of Fig. 1A, which SGSN does not exist in the E-UTRA architecture.
  • the RAN part comprises base station devices 20, e.g. a node B or base transceiver station (BTS), for providing an air interface for radio transmission to respective UEs 10 within their areas of coverage.
  • BTS base transceiver station
  • the UEs 10 at least some of which may have a separate MBMS receiver, will use their serving unicast cell for any MBMS uplink signalling.
  • a "serving unicast cell” means any cell which a concerned terminal device (e.g. UE 10) may use for unicast services.
  • the UE 10 will send a counting response message transparently over the respective serving unicast cell to the respective serving MBMS cell.
  • the UE 10 adds an identification of the MBMS cell (e.g. Cell ID or an IP address of the multicast serving network ele- ment (e.g. MBMS E-UTRAN Node B (MeNB)) to the response message, so that the response message contains this identification.
  • the unicast cell is able to forward the transparent message to the correct multicast serving element (e.g. MeNB).
  • the correct multicast serving element e.g. MeNB
  • this forwarding may be achieved via a direct connection between the unicast serving network element (e.g. E-UTRAN Node B (eNB)) and the multicast serving network element (e.g. MeNB).
  • eNB E-UTRAN Node B
  • MeNB multicast serving network element
  • forwarding may be achieved via a gateway element (e.g. aGW) to the serving network element of the serving multicast cell.
  • a gateway element e.g. aGW
  • GERAN GSM/EDGE Radio Access Network forwarding may be achieved via the SGSN 40 to the serving network element of the serving multicast cell.
  • the serving MBMS cell sends an MBMS notification (e.g. counting request) on a common control channel.
  • a part of this MBMS notification message is a request to respond to the MBMS notification.
  • those UEs 10 which are interested in receiving or have joined the notified MBMS session may respond to this counting request by sending a counting response message via it's serving unicast cell.
  • the identifier defining the target MBMS serving network element (e.g. MeNB) or target MBMS cell can be included in the MBMS notification (e.g. counting request) broadcasted by the MBMS cell and it can be e.g. the Cell ID of the target MBMS cell or the IP address of the MBMS serving network element of the target MBMS cell.
  • the unicast cell will forward the response message directly to the serving network element (e.g. MeNB) of the respective MBMS cell, if there is a connection interface between the unicast serving network element (e.g. eNB) and MBMS serving net- work element (e.g. MeNB), or alternatively via the gateway element(s) (e.g. aGW(s)) or SGSN(s) 40, depending on the network environment.
  • the gateway element(s) e.g. aGW(s)
  • SGSN(s) 40 depending on the network environment.
  • the content of the response message is transparent for the serving unicast cell and for the gateway element (e.g. aGW) or SGSN 40 (if involved in the delivery path).
  • the gateway element e.g. aGW
  • SGSN 40 if involved in the delivery path.
  • the present invention is not restricted to the counting mechanism.
  • the solution may as well be used in connection with other solutions, such as a case where the UE 10 enters a new MBMS cell after MBMS cell reselection, if the new MBMS cell belongs to the service area of the ongoing session, but the data transmission through the new MBMS cell is not on.
  • the UE 10 can then indicate it's existence to the new MBMS cell by using the proposed uplink signalling via the serving unicast cell.
  • using the common control channels is only one possible solution for delivery of the identifier defining the target MBMS serving network element (e.g. MeNB) or target MBMS.
  • the target MBMS serving network element e.g. MeNB
  • target MBMS e.g.
  • other signaling solutions based on alternative channels or methods might be used as well.
  • Fig. 2 shows a schematic diagram indicating signaling steps for delivery of the MBMS related uplink signaling in the architecture of Fig. 1B via the serving unicast cell during a MBMS notification in an MeNB approach with counting (e.g. MBMS Multicast).
  • the aGW 130 sends an MBMS session start request to an MeNB 122 of a serving MBMS cell 120 of a UE 10.
  • the MeNB 122 transmits in step 2 an MBMS notification including a counting request on a common control channel in the MBMS cell 120.
  • a response message to the counting is transmitted from the UE 10 to a serving unicast cell 140, wherein the UE 10 would be in LTE RRC (Radio Resource Control) active state to transmit the response message.
  • the target MeNB 122 is identified in the response message, e.g., with the Cell ID of the MBMS cell 120.
  • a transparent transmission of the response message to the MeNB 122 or to the RRM (Radio Resource Management) entity controlling the MBMS radio resources is performed by the respective eNB 142 in step 4a.
  • a transparent transmission of the response message is performed in step 4b from the eNB 142 via the aGW 130 to the MeNB 122 or to the entity controlling the radio resources of the MBMS cell 140.
  • uplink control signaling related to the MBMS transmission can be initiated through a second cell, which is used for unicast traffic by the terminal.
  • a method, system, network element and terminal device have been described, which are used for signaling uplink control data for a multicast transmission of a cellular network, wherein an identification of a serving multicast cell is added to an uplink message which is transmitted in a transparent manner over a serving unicast cell to the cellular network. Based on this added identification, the uplink message can be forwarded to a serving network element of the serving multicast cell.
  • uplink messages such as counting responses, can be supported, even if a terminal devices has a separate multicast receiver in addition to the unicast transceiver.
  • the present invention is not restricted to the above predetermined embodiment with its specific network elements.
  • the present invention is applicable to the UTRAN MBMS, which is using Release 6 network architecture and MBMS procedures and to the MBMS using Evolved UTRA (i.e., UTRAN LTE (UMTS Terrestrial Radio Access Network Long Term Evolution) (E-UTRA, 3GPP TR 25.813: Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Radio interface protocol aspects).
  • E-UTRA UMTS Terrestrial Radio Access Network Long Term Evolution
  • 3GPP TR 25.813 Evolved Universal Terrestrial Radio Access Network
  • the present invention is not restricted to the MBMS service, but can be used for any multicast or broadcast service an uplink control signaling is required. The preferred embodiments may thus vary within the scope of the attached claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé, un système, un dispositif terminal et un élément de réseau servant à la signalisation de données de commande en sens montant pour une transmission multidiffusion dans un réseau cellulaire. Selon l'invention, une identification d'une cellule multidiffusion de desserte (120) est ajoutée à un message montant qui est transmis au réseau cellulaire de manière transparente par le biais d'une cellule unidiffusion de desserte (140). Grâce à cette identification ajoutée, le message montant peut être réacheminé vers un élément de réseau de desserte (122) de la cellule multidiffusion de desserte (120). Ainsi, les messages montants, tels que les réponses de comptage, peuvent être pris en charge même si un dispositif terminal (10) possède un récepteur multidiffusion distinct en plus de l'émetteur unidiffusion.
PCT/IB2007/000476 2006-03-06 2007-02-27 Signalisation montante pour une transmission multidiffusion Ceased WO2007102060A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP06004510 2006-03-06
EP06004510.1 2006-03-06
US11/499,652 US20080031245A1 (en) 2006-03-06 2006-08-07 Uplink signaling for multicast transmission
US11/499,652 2006-08-07

Publications (2)

Publication Number Publication Date
WO2007102060A2 true WO2007102060A2 (fr) 2007-09-13
WO2007102060A3 WO2007102060A3 (fr) 2007-11-08

Family

ID=38326400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/000476 Ceased WO2007102060A2 (fr) 2006-03-06 2007-02-27 Signalisation montante pour une transmission multidiffusion

Country Status (1)

Country Link
WO (1) WO2007102060A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022915A1 (fr) * 2006-08-24 2008-02-28 Nokia Siemens Networks Gmbh & Co. Kg Procédé et entités de réseau pour la synchronisation de radiocommunications
WO2008066467A1 (fr) * 2006-12-01 2008-06-05 Telefonaktiebolaget Lm Ericsson (Publ) Gestion d'accès en liaison montante

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20012256A0 (fi) * 2001-11-20 2001-11-20 Nokia Corp Matkaviestintäverkot ja digitaaliset yleislähetyspalvelut
US7606587B2 (en) * 2002-09-20 2009-10-20 Nokia Corporation Multicast transmission in a cellular network
US8170556B2 (en) * 2003-07-09 2012-05-01 Samsung Electronics Co., Ltd. Method for initiating uplink signaling proactively by MBMS UE
US8081999B2 (en) * 2004-09-14 2011-12-20 Nokia Corporation Enhanced assisted cell change

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022915A1 (fr) * 2006-08-24 2008-02-28 Nokia Siemens Networks Gmbh & Co. Kg Procédé et entités de réseau pour la synchronisation de radiocommunications
WO2008066467A1 (fr) * 2006-12-01 2008-06-05 Telefonaktiebolaget Lm Ericsson (Publ) Gestion d'accès en liaison montante
US8081975B2 (en) 2006-12-01 2011-12-20 Telefonaktiebolaget L M Ericsson (Publ) Uplink access management

Also Published As

Publication number Publication date
WO2007102060A3 (fr) 2007-11-08

Similar Documents

Publication Publication Date Title
CN1806412B (zh) 用于无线通信系统中的广播应用的方法和设备
US9866919B2 (en) Method of transmitting MBMS data in an E-UTRAN-system
KR101176260B1 (ko) 무선 통신 시스템에서 멀티미디어 브로드캐스트 멀티캐스트서비스를 위한 멀티-셀 코디네이션
US7680109B2 (en) Mobile multipoint service
US7903593B2 (en) Multicast transmission in packet based cellular networks
EP2046090A1 (fr) Gestion de signalisation de contrôle de session pour services de multidiffusion/radiodiffusion
US9030989B2 (en) Method and apparatus for broadcasting/multicasting content from mobile user equipment over an MBMS network
EP1777873B1 (fr) Procédé et appareil pour la transmission de données faisant partie d'un service de diffusion/multidiffusion multimedia
US20080031245A1 (en) Uplink signaling for multicast transmission
US9277434B2 (en) Identification of UE counting results in eMBMS
EP1553721A1 (fr) Procédé et système de convergence d'un service de diffusion et d'un service multicast dans un système de communications mobiles
CA2593845A1 (fr) Utilisation de ressources amelioree pour des services de diffusion selective multimedia (mbms)
JP6321830B2 (ja) 基地局、ユーザ端末及び装置
WO2005018116A1 (fr) Procede d'etablissement d'un canal de transport commun pour un service mbms
KR100733911B1 (ko) Ｍｂｍｓ 제공 시스템 및 그 방법
GB2449797A (en) Broadcast or multicast service in a mobile telecommunications system
WO2007102060A2 (fr) Signalisation montante pour une transmission multidiffusion
Anis et al. Overview of evolved Multimedia Broadcast Multicast Services (eMBMS)
CN101588537A (zh) WiMAX网络中实现广播/组播的方法、装置和系统
KR100874549B1 (ko) Ｂｃｍｃｓ 네트워크를 활용한 긴급 정보 서비스 시스템 및방법과 이를 위한 이동통신 단말기
Nguyen et al. LTE Broadcast for Public Safety
KR20090120260A (ko) 광대역 무선통신 시스템에서 다이나믹 멀티캐스트 전송을위한 장치 및 방법
HK1153585A (en) Method and apparatus for broadcast application in a wireless communication system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07713079

Country of ref document: EP

Kind code of ref document: A2