WO2006109900A1 - Mapping of mbms service identifications - Google Patents
Mapping of mbms service identifications Download PDFInfo
- Publication number
- WO2006109900A1 WO2006109900A1 PCT/KR2005/001092 KR2005001092W WO2006109900A1 WO 2006109900 A1 WO2006109900 A1 WO 2006109900A1 KR 2005001092 W KR2005001092 W KR 2005001092W WO 2006109900 A1 WO2006109900 A1 WO 2006109900A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- point
- multipoint
- control layer
- mobile terminal
- multipoint service
- Prior art date
Links
- 238000013507 mapping Methods 0.000 title claims description 54
- 238000000034 method Methods 0.000 claims abstract description 48
- 238000012546 transfer Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 16
- 230000006870 function Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 11
- 238000010295 mobile communication Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 101100521334 Mus musculus Prom1 gene Proteins 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000005477 standard model Effects 0.000 description 1
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
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
Definitions
- the present invention relates to a mobile communication system, and more particularly, to a temporary service identifier (TSI) for identifying a specific point- to-multipoint service among a plurality of point-to-multipoint services being transmitted through a specific transport channel.
- TSI temporary service identifier
- a universal mobile telecommunication system is a third generation mobile communication system that has evolved from a European standard known as Global System for Mobile communications (GSM).
- GSM Global System for Mobile communications
- the UMTS aims to provide improved mobile communication service based on a GSM core network and wideband code division multiple access (W-CDMA) wireless connection technology
- W-CDMA wideband code division multiple access
- Each TSG develops, approves, and manages the standard specification within a related region.
- the radio access network (RAN) group (TSG-RAN) develops the standards for the functions, requirements, and interface of the UMTS terrestrial radio access network (UTRAN), which is a new radio access network for supporting W-CDMA access technology in the UMTS.
- RAN radio access network
- UTRAN UMTS terrestrial radio access network
- FIG. 1 illustrates an exemplary basic structure of a general UMTS network. As shown in Figure 1, the UMTS is roughly divided into a terminal (or user equipment: UE), a UTRAN 100, and a core network (CN) 200.
- UE user equipment
- UTRAN UTRAN
- CN core network
- the UTRAN 100 includes one or more radio network sub-systems (RNS) 110, 120.
- RNS radio network sub-systems
- Each RNS 110, 120 includes a radio network controller (RNC) 111, and a plurality of base stations or Node-Bs 112, 113 managed by the RNC 111.
- the RNC 111 handles the assigning and managing of radio resources, and operates as an access point with respect to the core network 200.
- the Node-Bs 112, 113 receive information sent by the physical layer of the terminal through an uplink, and transmit data to the terminal through a downlink.
- a primary function of the UTRAN 100 is fonning and maintaining a radio access bearer (RAB) to allow communication between the terminal and the core network 200.
- the core network 200 applies end-to-end quality of service (QoS ) requirements to the RAB, and the RAB supports the QoS requirements set by the core network 200.
- QoS quality of service
- the RAB service can be further divided into an Iu bearer service and a radio bearer service
- the Iu bearer service supports a reliable transmission of user data between boundary nodes of the UTRAN 100 and the core network 200.
- the core network 200 includes a mobile switching center (MSC) 210 and a gateway mobile switching center (GMSC) 220 connected together for supporting a circuit switched (CS) service, and a serving GPRS support node (SGSN) 230 and a gateway GPRS support node 240 connected together for supporting a packet switched (PS) service.
- MSC mobile switching center
- GMSC gateway mobile switching center
- SGSN serving GPRS support node
- PS packet switched
- the services provided to a specific terminal are roughly divided into the circuit switched (CS) services and the packet switched (PS ) services
- CS circuit switched
- PS packet switched
- CS circuit switched
- PS packet switched
- the RNCs 111 are connected to the MSC
- the MSC 210 of the core network 200, and the MSC 210 is connected to the GMSC 220 that manages the connection with other networks.
- the RNCs 111 are connected to the SGSN
- the SGSN 230 supports the packet communications going toward the RNCs 111, and the GGSN 240 manages the connection with other packet switched networks, such as the Internet.
- An interface between the RNC 111 and the core network 200 is defined as an Iu interface.
- Iu interface the Iu interlace between the RNCs 111 and the core network 200 for packet switched systems
- Iu-CS the Iu interface between the RNCs 111 and the core network 200 for circuit switched systems
- FIG. 2 illustrates a structure of a radio interface protocol between the terminal and the UTRAN according to the 3GPP radio access network standards.
- the radio interface protocol has horizontal layers comprising a physical layer, a data link layer, and a network layer, and has vertical planes comprising a user plane (U-plane) for transmitting user data and a control plane (C-plane) for transmitting control information.
- U-plane user plane
- C-plane control plane
- the user plane is a region that handles traffic information of the user, such as voice or Internet protocol (IP) packets
- the control plane is a region that handles control information for an interface of a network, maintenance and management of a call, and the like.
- the protocol layers in Figure 2 can be divided into a first layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer (Ll ), a second layer
- L2 a third layer
- OSI open system interconnection
- the physical layer is connected to an upper layer called a medium access control (MAC) layer, via a transport channel.
- MAC medium access control
- the MAC layer and the physical layer send and receive data with one another via the transport channel.
- the second layer (L2) includes a MAC layer, a radio link control (RLC) layer, a broadcast/multicast control (BMC) layer, and a packet data convergence protocol (PDCP) layer.
- RLC radio link control
- BMC broadcast/multicast control
- PDCP packet data convergence protocol
- the MAC layer provides an allocation service of the MAC parameters for allocation and re-allocation of radio resources.
- the MAC layer is connected to an upper layer called the radio link control (RLC) layer, via a logical channel.
- RLC radio link control
- Various logical channels are provided according to the kind of transmitted information.
- a control channel when information of the control plane is transmitted, a control channel is used.
- a traffic channel is used.
- a logical channel may be a common channel or a dedicated channel depending on whether the logical channel is shared.
- Logical channels include a dedicated traffic channel (DTCH), a dedicated control channel (DCCH), a common traffic channel (CTCH), a common control channel (CCCH), a broadcast channel (BCCH) and a paging control channel (PCCH) or a Shared Channel Control Channel (SHCCH).
- the BCCH provides information including information utilized by a terminal to access a system.
- the PCCH is used by the UTRAN to access a terminal.
- an MCCH MBMS point-to-multipoint Control Channel
- an MTCH MBMS point-to-multipoint Traffic Channel
- an MSCH MBMS point-to-multipoint Scheduling Channel
- the MAC layer is connected to the physical layer by transport channels and can be divided into a MAC-b sub-layer, a MAC-cl sub-layer, a MAC-c/sh sub-layer, and a M AC-hs sub-layer according to the type of transport channel to be managed.
- the MAC-b sub-layer manages a BCH (Broadcast Channel), which is a transport channel handling the broadcasting of system information.
- the MAC-d sub-layer manages a dedicated channel (DCH), which is a dedicated transport channel for a specific terminal. Accordingly, the MAC-d sub-layer of the UTRAN is located in a serving radio network controller (SRNC) that manages a corresponding terminal, and one MAC-d sub-layer also exists within each terminal (UE).
- SRNC serving radio network controller
- the MAC-c/sh sub-layer manages a common transport channel, such as a forward access channel (FACH) or a downlink shared channel (DSCH), which is shared by a plurality of terminals.
- FACH forward access channel
- DSCH downlink shared channel
- the MAC-c/sh sub-layer is located in a controlling radio network controller (CRNC).
- CRNC radio network controller
- the RLC layer supports reliable data transmissions, and performs a segmentation and concatenation function on a plurality of RLC service data units (RLC SDUs) delivered from an upper layer.
- RLC SDUs RLC service data units
- the RLC layer adjusts the size of each RLC SDU in an appropriate manner upon considering processing capacity, and then creates certain data units with header information added thereto.
- the created data units are called protocol data units (PDUs), which are then transferred to the MAC layer via a logical channel.
- the RLC layer includes a RLC buffer for storing the RLC SDUs and/or the RLC PDUs.
- the BMC layer schedules a cell broadcast message (referred to as a 'CB message', hereinafter) received from the core network, and broadcasts the CB messages to terminals located in a specific cell(s).
- the BMC layer of the UTRAN generates a broadcast/multicast control (BMC) message by adding information, such as a message ID (identification), a serial number, and a coding scheme to the CB message received from the upper layer, and transfers the BMC message to the RLC layer.
- the BMC messages are transferred from the RLC layer to the MAC layer through a logical channel, i.e., the CTCH (Common Traffic Channel).
- the CTCH is mapped to a transport channel, i.e., a FACH, which is mapped to a physical channel, i.e., a S- CCPCH (Secondary Common Control Physical Channel).
- the PDCP (Packet Data Convergence Protocol) layer allows the data transmitted through a network protocol (such as an IPv4 or IPv6) to be effectively transmitted on a radio interface with a relatively small bandwidth.
- a network protocol such as an IPv4 or IPv6
- the PDCP layer performs the function of reducing unnecessary control in- formation used for a wired network, and this type of function is called, header compression.
- the RRC layer is defined only in the control plane, and handles the controlling of logical channels, transport channels, and physical channels with respect to setting, resetting, and releasing of radio bearers.
- the radio bearer service refers to a service that the second layer (L2) provides for data transmission between the terminal and the UTRAN, and in general, setting the radio bearer refers to defining the protocol layers and the channel characteristics of the channels required for providing a specific service, as well as respectively setting substantial parameters and operation methods.
- the RLC layer can belong to the user plane or to the control plane depending upon the type of layer connected at the upper layer of the RLC layer. That is, il the RLC layer receives data from the RRC layer, the RLC layer belongs to the control plane. Otherwise, the RLC layer belongs to the user plane.
- Figure 3 shows a structure of a MAC layer for the UTRAN.
- Figures 4 to 7 show staictures of the M AC-d and MAC-c/sh sublayer of the UTRAN, in which the square blocks show each function of the MAC layer The primary functions thereof will now be described.
- the MAC layer exists between the RLC and physical layers and its major function is to map the logical channels and transport channels to each other
- the MAC layer needs such channel mapping because a channel handling method of a higher layer of the MAC layer is different from that of a lower layer of the MAC layer
- a channel handling method of a higher layer of the MAC layer is different from that of a lower layer of the MAC layer
- channels are divided into control channels of the control plane and traffic channels of the user plane according to the content of data transferred on the channel.
- channels are divided into common channels and dedicated channels according to how the channels are shared. Therefore, channel mapping between the higher and lower layers of the MAC layer is very significant.
- the relationship of channel mapping is shown in Figure 4, which illustrates a diagram of the channel mapping in a UE.
- Another major function of the MAC layer is logical channel multiplexing.
- MAC layer multiplexes several logical channels into one transport channel, so that a multiplexing gain is attained.
- Multiplexing gain is significant for intermittently transmitted traffic, such as signaling information or packet data.
- signaling information or packet data For circuit data, multiplexing is generally not used because data is continuously transferred, and as a result, the multiplexing gain is relatively not so high.
- the channel mapping and logical channel multiplexing functions of the MAC layer are advantageous in increasing both the flexibility of channel selection and the efficiency of channel resources, but to support these advantages, certain kinds of iden- tification functions are required.
- Identification is classified into two types: UE identification and logical channel identification.
- UE identification is needed for a common transport channel, since it is shared by a plurality of UEs.
- logical channel identification is needed when several logical channel are multiplexed into one transport channel.
- the MAC layer inserts a TCTF (target channel type field), UE-Id Type, UE- Id and/or C/T (Control/Traffic) fields into the header of a MAC PDU.
- TCTF target channel type field
- UE-Id Type UE- Id
- C/T Control/Traffic
- UE identification is required when a dedicated logical channel such as DCCH or DTCH is mapped to a common transport channel such as CPCH, DSCH, or USCH.
- the MAC layer adds a RNTI (radio network temporary identity) to the UE-ID field of the MAC PDU header.
- RNTI radio network temporary identity
- three kinds of RNTI such as U-RNTI (UTRAN RNTI), C-RNTI (cell RNTI), and DSCH-RNTI are used to identify a specific UE. Since there are three kinds of RNTI that are used, a UE-ID type field informing which RNTI is used is also added to the MAC PDU header.
- the first level is logical channel type identification provided by the TCTF (target channel type field), and the second level is dedicated logical channel identification provided by the C/T (Control/Traffic) field.
- the TCTF is required for a common transport channel like the FACH and RACH on which several types of logical channels are multiplexed.
- the BCCH, CCCH, CTCH, and one or more dedicated logical channels can be mapped on the FACH simultaneously, and the CCCH and one or more dedicated logical channels can be mapped on RACH simultaneously. Therefore, the TCTF provides logical channel type identification on the FACH and RACH, i.e., whether the received data on the FACH or RACH belongs to the BCCH, CCCH, CTCH, or one of the dedicated logical channels.
- the TCTF identifies the type of logical channel, it does not identify each of the logical channels.
- the TCTF is required for the transport channel when a dedicated logical channel can be mapped together with other logical channels. Thus, the TCTF identifies whether the logical channel is a dedicated logical channel or other logical channel.
- the TCTF also provides logical channel identification in the case of common logical channels.
- each dedicated logical channel is performed by using the C/T field for the following reasons.
- a dedicated logical channel is handled by the MAC-d in the SRNC, whereas the other common logical channels are handled by the MAC-c/sh.
- a plurality of the dedicated logical channels that are mapped to the same transport channel have their logical channel identities, respectively. Additionally, such value is used as a C/T field value. If only one dedicated logical channel exists for the transport channel, the C/T field is not used.
- Table 1 below shows the different identifiers of a MAC header that are used according to the mapping relationship between logical channels and transport channels for FDD.
- a C/T field exists when several dedicated logical channels (DCCH or DTCH) are mapped.
- N indicates that there is no header
- - indicates that there is no mapping relationship
- UE-ID indicates that both a UE- ID field and a UE-ID type field exist.
- a UE-ID field always exists together with a UE- ID type field.
- MBMS Multimedia Broadcast/Multicast Service
- PS Packet Switched domain service of transferring multimedia data such as audio, pictures, video, etc. to a plurality of terminals using a unidirectional point-to-multipoint bearer service.
- UEs to be provided with the service must first complete a subscription procedure establishing a relationship between a service provider and each UE individually. Thereafter, the subscriber UE receives a service announcement from the core network 200 confirming subscription and including, for example, a list of services to be provided.
- MBMS data Since MBMS data is shared by multiple users, it should be transmitted through a common logical channel as in the related art. However, since MBMS is a multimedia service, multiple services of different QoS or multiple streams of different QoS in the same service may be provided to a single UE or to different UEs. That is, it is expected that multiple common logical channels of the same type need to be mapped to the same transport channel when providing MBMS. Disclosure of Invention
- MBMS service and a common logical channel such as an MTCH (MBMS Traffic Channel).
- MTCH MBMS Traffic Channel
- the different MBMS services are globally identified by an MBMS service identifier
- MBMS service identifier there potentially exist thousands of different services. If the MBMS service identifier is used, then a MAC header, including the MBMS service identifier, for allowing the mobile terminal to distinguish the different services would be very big in size and a large overhead would exist during transmission. Therefore, a method for identifying the different services while keeping the MAC header small in size is needed.
- the present invention is related to a temporary service identifier (TSI) for identifying a point-to-multipoint service among a plurality of point-to-multipoint services being transmitted through a specific transport channel.
- TSI temporary service identifier
- the present invention is preferably embodied in a method for identifying a point-to-multipoint service among a plurality of point-to-multipoint services being transmitted through a transport channel in a wireless communication system, the method comprising allocating to each of the plurality of point-to-multipoint services a point-to-multipoint service identifier identifying the point-to-multipoint service, generating mapping information for indicating the allocation of the point-to-multipoint service identifiers to each of the plurality of point-to-multipoint services, transmitting the mapping information to a mobile terminal, providing a medium access control layer for generating at least one protocol data unit associated with at least one of the plurality of point-to-multipoint services, generating the at least one protocol data unit in the medium access control layer, attaching to the at least one protocol data unit the point-to-multipoint service identifier allocated to the at least one of the plurality of point
- allocation of the point-to-multipoint service identifiers is handled by a radio resource control layer of a network.
- the mapping information is generated in a radio resource control layer of a network.
- the radio resource control layer of the network transfers the mapping information to the medium access control layer of the network. Also, the radio resource control layer of the network transmits the mapping information to a radio resource control layer of the mobile terminal. Preferably, the radio resource control layer of the mobile terminal transfers the mapping information to a medium access control layer of the mobile terminal.
- the transport channel is a FACH.
- the protocol data unit is transmitted through a common logical channel MTCH
- the method further comprises transferring values for the point- to-multipoint service identifiers respectively allocated to each of the point- to-multipoint services to the medium access control layer of a network and transmitting the values for the point-to-multipoint service identifiers to a radio resource control layer of the mobile terminal.
- the radio resource control layer of the mobile terminal transfers the values for the point-to-multipoint service identifiers to a medium access control layer of the mobile terminal.
- the point-to-multipoint service identifier has a length ot 4 bits and a maximum ol 16 point-to-multipoint services are transmitted through the transport channel.
- the point-to-multipoint service identifier is attached to a header ot the at least one protocol data unit.
- a method for identifying a point-to-multipoint service among a plurality of point-to-multipoint services being received through a transport channel by a mobile terminal in a wireless communication system comprises receiving from a network mapping information for indicating an allocation of a point-to-multipoint service identilier to each of the plurality of point-to-multipoint services, receiving in a medium access control layer at least one protocol data unit associated with at least one of the plurality ot point- to-multipoint services, wherein a point-to-multipoint service identifier allocated to the at least one of the plurality of point-to-multipoint services is attached to the at least one protocol data unit, and determining to process the at least one protocol data unit by evaluating the allocated point-to-multipoint service identifier with the mapping information.
- the allocation of the point-to-multipoint service identifiers is handled by a radio resource control layer of the network.
- the mapping information is generated in a radio resource control layer of the network.
- a radio resource control layer of the mobile terminal receives the mapping information from the radio resource control layer of the network Preferably, the radio resource control layer of the mobile terminal transfers the mapping information to a medium access control layer ot the mobile terminal.
- the transport channel is a FACH.
- the method further comprises receiving values for the point- to-multipoint service identifiers respectively allocated to each of the point- to-multipoint services, wherein the values for the point-to-multipoint service identifiers are generated in a radio resource control layer of the network and transmitted to a radio resource control layer of the mobile terminal.
- the radio resource control layer of the mobile terminal transfers the values for the point-to-multipoint service identifiers to a medium access control layer of the mobile terminal
- the point-to-multipoint service identifier has a length of 4 bits and a maximum of 16 point-to-multipoint services are received through the transport channel. Also, the point-to-multipoint service identifier is attached to a header of the at least one protocol data unit.
- the determining step comprises reading the allocated point-to-multipoint service identifier and determining a matching point-to-multipoint service corresponding to the allocated point- to-multipoint service identifier by reading the mapping information, wherein if the matching point-to-multipoint service is a service that the mobile terminal wishes to receive, the at least one protocol data unit is processed, wherein if the matching point- to-multipoint service is a service that the mobile terminal does not wish to receive, the at least one protocol data unit is disregarded
- Figure 1 is a block diagram of a general UMTS network architecture
- Figure 2 is a block diagram of a structure of a radio interface protocol between a terminal and a UTRAN based on 3GPP radio access network standards.
- FIG. 3 is a block diagram of a general architecture of a MAC layer of the
- Figure 4 is a diagram of a general architecture of a MAC-c/sh of the mobile terminal.
- Figure 5 is a diagram of a general architecture of a MAC-c/sh of the UTRAN.
- Figure 6 is a diagram of a general architecture of a MAC-d of the mobile terminal.
- Figure 7 is a diagram of a general architecture of a MAC-d of the UTRAN.
- Figure 8 is a diagram of a mapping relationship (at the UE side) between logical and transport channels.
- FIG. 9 and Figure 10 are diagrams of a MAC PDU format in accordance with one embodiment of the present invention.
- FIG. 11 is a diagram oi an architecture ot a MAC of the UTRAN in accordance with one embodiment of the present invention
- Figure 12 is a diagram of an architecture of a MAC of the mobile terminal in accordance with one embodiment ot the present invention.
- FIG. 13 is a diagram of the allocation of TSI (Temporary Service Identifier) field values in accordance with one embodiment ol the present invention.
- TSI Temporal Service Identifier
- Figure 14 is a diagram of a data transmission in accordance with one embodiment of the present invention. Mode for Invention
- the present invention is related to a temporary service identifier (TSI) for identifying a specific MBMS service among a plurality of MBMS services being transmitted through a specific transport channel.
- TSI temporary service identifier
- the present invention is accomplished by inserting a TSI field in a header ol a medium access control (MAC) layer data unit corresponding to the MBMS service and transmitting the data unit to a mobile terminal through the specific transport channel
- the mobile terminal determines to receive the data unit according to mapping information received from a UTRAN, wherein the mapping information informs the mobile terminal of which MBMS service a TSI field value is allocated to.
- mapping information informs the mobile terminal of which MBMS service a TSI field value is allocated to.
- FIGS 9 and 10 illustrate a MAC PDU format in accordance with one embodiment of the present invention, in which the MAC PDU format is used when data of a common logical channel, such as an MTCH, is transferred through a common transport channel, such as a FACH. It is also shown that a TCTF and a TSI field comprise a header of the MAC PDU while a MAC SDU comprises a payload of the MAC PDU.
- the MAC PDU header comprises TCTF and TSI fields, as shown in Figure 9.
- This type of MAC PDU is used when the transport channel, such a FACH, carries different types of logical channels
- the TCTF field identifies the type of logical channel
- the TSI field identities an MBMS service being transmitted on the logical channel.
- the MAC PDU header comprises a TSI field for identifying an
- a TCTF field is not included.
- This type of MAC PDU is used when the transport channel can carry only one type of common logical channel.
- the TSI field is included in the header as in the first type, but the TCTF field is not needed because the transport channel itself identifies the type of logical channel.
- a TCTF field is present in the MAC PDU header when the transport channel can carry more than one type of logical channel Moreover, a TSI field is present in the MAC PDU header when more than one MBMS service is multiplexed to the transport channel.
- Figure 11 illustrates an architecture of a MAC of the UTRAN in accordance with one embodiment of the present invention.
- Figure 12 illustrates an architecture of the MAC of the mobile terminal in accordance with one embodiment of the present invention.
- lhe MAC when common logical channels such as the MTCH are multiplexed, lhe MAC performs a TSI multiplexing (MUX) function.
- MUX TSI multiplexing
- the MAC when the MTCHs are multiplexed to one transport channel, the MAC performs the TSI MUX function.
- the TSI MUX function of the MAC in the UTRAN inserts a TSI field for identifying an MBMS service in a header of the corresponding MAC PDU
- the TSI MUX function of the MAC in the mobile terminal removes the TSI field from the MAC PDU after reading TSI field information identifying the MBMS service from the header of the received MAC PDU
- FIG. 13 is a diagram illustrating the allocation of TSI field values according to one embodiment of the present invention.
- An RRC layer of a UTRAN manages the grouping of several MBMS services for multiplexing to one transport channel, such as a FACH, and allocates a TSI field value to each MBMS service.
- the time during which the TSI is allocated may be given explicitly, or implicitly.
- the allocation may be valid until the mobile terminal changes cells, or until the allocation changes.
- the TSI is preferably transmitted periodically during the lifetime of an active MBMS service.
- MBMS there is a one-to-one relationship between an MBMS service and a common logical channel, such as an MTCH.
- the RRC layer of the UTRAN also manages the grouping of several common logical channels carrying a respective MBMS service for multiplexing to one transport channel. Furthermore, the RRC layer of the UTRAN generates mapping information for indicating which TSI field values are allocated to which MBMS services
- the TSI field may be small in size. As such, the TSI allows to distinguish few services However, given that very few services are actively transmitted at the same time under normal circumstances, a TSI having a small size, such as 4 bits, would be preferable in order to keep overhead low. Furthermore, supposing that a transport block has a size of 336 bits, and the number of possible services is limited to 4000 services, this would imply that a prior art identification field would require a size of 12 bits. This translates into an overhead of 3 57o. However, in the present invention, if the TSI field having a size of 4 bits, for example, were used to identify a maximum of 16 services, the overhead would be reduced to 1.2%.
- the RRC layer of the UTRAN After the RRC layer of the UTRAN allocates the TSI field values to their respective MBMS services and generates the mapping information, the RRC layer transfers to a medium access control (MAC) layer of the UTRAN, the TSI field values, the mapping information and MBMS service multiplexing information related to multiplexing a plurality of MBMS services to a specific transport channel (SlO).
- MAC medium access control
- the RRC layer of the UTRAN also transfers the TSI field values, the mapping information and the MBMS service multiplexing information to an RRC layer of a mobile terminal or UE (S20).
- the information may be sent either once or periodically.
- the TSI field values, the mapping information and the MBMS service multiplexing information are transferred to the RRC layers of all mobile terminals that are meant to receive the specific transport channel.
- the RRC layer of the mobile terminal having received the TSI field values, the mapping information and the MBMS service multiplexing information transfers the received information to a MAC layer of the mobile terminal (S 30).
- FIG 14 is a diagram of a data transmission according to one embodiment of the present invention.
- the plurality of MBMS services are multiplexed to one common transport channel, such as a FACH.
- each MBMS service is transmitted on a respective common logical channel, such as an MTCH.
- the method comprises multiplexing data units of a plurality of MBMS services to a specific transport channel, transmitting the multiplexed data units to a mobile terminal, and de-multiplexing the transmitted data units in the mobile terminal.
- the multiplexing step comprises multiplexing data received via a plurality of common logical channels, attaching a TSI field to a header of the received data to generate a protocol data unit (PDU), and transmitting the generated PDU through the specific transport channel.
- PDU protocol data unit
- the de-multiplexing step comprises receiving data units through the specific transport channel, checking the TSI field of the received data, determining to demultiplex the received data according to the mapping information, and transmitting the data determined to be received to a higher layer in the mobile terminal through the common logical channel designated by the TSI.
- MBMS services are shown to be transmitted through the same transport channel, preferably a maximum of 16 services can be transmitted through the same transport channel in accordance with one embodiment of the present invention.
- common logical channels MTCH #1 and MTCH #2 carrying MBMS #1 and MBMS #2, respectively are multiplexed to one common transport channel FACH.
- the peer of RLC entity #1 at the UTRAN is RLC entity #1 at the mobile terminal or UE, and the peer of RLC entity #2 at the UTRAN is RLC entity #2 at the mobile terminal.
- a method for transmitting a plurality of MBMS services through a specific transport channel is as follows. First, the RLC entity #1 of the UTRAN generates a MAC SDU #1 for a service MBMS #1 and transfers the MAC SDU #1 to a MAC layer of the UTRAN through the MTCH #1 (S 110). Meanwhile, the RLC entity #2 of the UTRAN generates a MAC SDU #2 for a service MBMS #2 and transfers the MAC SDU #2 to the MAC layer of the UTRAN through the MTCH #2 (S 120).
- the MAC layer of the UTRAN then multiplexes MTCH #1 and MTCH #2, and attaches a MAC header including a TSI field to MAC SDU #1 to construct MAC PDU #1 (S 130).
- a TSI field value included in the header of MAC PDU #1 may indicate the common logical channel MTCH #1 as well as identify that MAC PDU #1 is related to MBMS #1.
- TSI field values along with mapping information are received in the MAC layer from the RRC layer of the UTRAN.
- the MAC layer knows which TSI field value is to be mapped with which MBMS service according to the mapping information.
- the MAC layer in accordance with the mapping information attaches a header having a TSI field value corresponding to MBMS #1 to construct MAC PDU #1.
- a TSI field value included in the header of MAC PDU #2 may indicate the common logical channel MTCH #2 as well as identify that MAC PDU #2 is related to MBMS #2.
- the MAC layer is aware of the mapping relationship between the received TSI field values and any MBMS services.
- the MAC layer in accordance with the mapping information attaches a header having a TSI field value corresponding to MBMS #2 to construct MAC PDU #2.
- the MAC layer of the UTRAN transfers MAC PDU #1 and MAC PDU #2 to a physical layer of the UTRAN through the same transport channel FACH (S 140).
- the MAC PDU #1 and MAC PDU #2 are then transmitted to a physical layer of the mobile terminal through an air interface.
- the physical layer of the mobile terminal transfers the received MAC PDU #1 and MAC PDU #2 to a MAC layer of the mobile terminal through a same transport channel FACH of the mobile terminal.
- the MAC layer of the mobile terminal After receiving the MAC PDU #1 and the MAC PDU #2, the MAC layer of the mobile terminal checks the TSI fields included in the received MAC PDUs and determines to receive the MAC PDUs accordingly (S150). Preferably, the MAC layer detects the TSI field values from the headers of the MAC PDUs, and determines whether the received MAC PDUs are related to MBMS services the mobile terminal has subscribed to. If the MAC PDU is related to an MBMS service subscribed to by the mobile terminal, the mobile terminal continues receiving the MAC PDU. If the MAC PDU is not related to an MBMS service subscribed to the by the mobile terminal, the mobile terminal disregards the MAC PDU.
- the MAC layer of the mobile terminal determines whether the MAC PDU is related to a subscribed MBMS service. Specifically, the MAC layer of the mobile terminal matches the received TSI field value with a corresponding MBMS service according to the mapping information. If the corresponding MBMS service is a service that the mobile terminal has subscribed to, then the mobile terminal extracts the MAC SDU and forwards it to higher layers. However, if the corresponding MBMS service is a service that the mobile terminal has not subscribed to, then the mobile terminal disregards the MAC PDU.
- the MAC layer of the mobile terminal also checks the TSI field for information regarding a common logical channel the MAC PDU is to be transferred through.
- the MAC layer of the mobile terminal checks the MAC PDUs' respective TSI fields to determine whether processing of the received MAC PDUs should be performed (S 150).
- a detected TSI field indicates a common logical channel MTCH#1
- a corresponding MAC SDU #1 is transferred to RLC entity #1 of the mobile terminal through MTCH #1 (S 160).
- the mobile terminal confirms that the MAC SDU corresponding to MTCH #1 is the MAC SDU #1.
- a detected TSI field indicates a common logical channel MTCH #2
- a corresponding MAC SDU #2 is transferred to RLC entity #2 of the mobile terminal through MTCH #2 (S 170).
- reception is correct then the mobile terminal confirms that the MAC SDU corresponding to MTCH #2 is the MAC SDU #2.
- the MAC layer of the UTRAN and the mobile terminal respectively perform multiplexing and de-multiplexing functions for a plurality of MBMS services transmitted through respective common logical channels.
- a TSI field value is used to identify each of the MBMS services such that multiplexing of the plurality of MBMS services to the same transport channel becomes possible. Consequently, overhead is reduced because the use of a global MBMS identifier, having a large overhead, is unnecessary.
- multiple services of different QoS or multiple streams of different QoS in the same service can be provided to a single mobile terminal, which is an essential feature for next generation mobile communication systems. As such, the motivation to apply the teachings and suggestions of the present invention to various types of radio (wireless) communication schemes would be clearly understood by those having ordinary skill in the art.
- the present invention is described in the context of mobile communication, the present invention may also be used in any wireless communication systems using mobile devices, such as PDAs and laptop computers equipped with wireless communication capabilities. Moreover, the use of certain terms to describe the present invention should not limit the scope of the present invention to certain type of wireless communication system, such as UMTS. The present invention is also applicable to other wireless communication systems using different air interfaces and/ or physical layers, for example, TDMA, CDMA, FDMA, WCDMA, etc.
- the preferred embodiments may be implemented as a method, apparatus or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof.
- article of manufacture refers to code or logic implemented in hardware logic (e.g., an integrated circuit chip, Field Programmable Gate Array (FPGA), Application Specific Integrated Circuit (ASIC), etc.) or a computer readable medium (e.g., magnetic storage medium (e.g., hard disk drives, floppy disks, tape, etc.), optical storage (CD-ROMs, optical disks, etc.), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, firmware, programmable logic, etc.).
- FPGA Field Programmable Gate Array
- ASIC Application Specific Integrated Circuit
- the code in which preferred embodiments are implemented may further be accessible through a transmission media or from a file server over a network.
- the article of manufacture in which the code is implemented may comprise a transmission media, such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, infrared signals, etc
- a transmission media such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, infrared signals, etc
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNA2005800494405A CN101160752A (en) | 2005-04-15 | 2005-04-15 | Mapping of MBMS service sign |
EP05764868A EP1875636A4 (en) | 2005-04-15 | 2005-04-15 | Mapping of mbms service identifications |
JP2008506357A JP4516621B2 (en) | 2005-04-15 | 2005-04-15 | MBMS service identification mapping |
MX2007012772A MX2007012772A (en) | 2005-04-15 | 2005-04-15 | Mapping of mbms service identifications. |
AU2005330412A AU2005330412B2 (en) | 2005-04-15 | 2005-04-15 | Mapping of MBMS service identifications |
PCT/KR2005/001092 WO2006109900A1 (en) | 2005-04-15 | 2005-04-15 | Mapping of mbms service identifications |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR2005/001092 WO2006109900A1 (en) | 2005-04-15 | 2005-04-15 | Mapping of mbms service identifications |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006109900A1 true WO2006109900A1 (en) | 2006-10-19 |
Family
ID=37087155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2005/001092 WO2006109900A1 (en) | 2005-04-15 | 2005-04-15 | Mapping of mbms service identifications |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1875636A4 (en) |
JP (1) | JP4516621B2 (en) |
CN (1) | CN101160752A (en) |
AU (1) | AU2005330412B2 (en) |
MX (1) | MX2007012772A (en) |
WO (1) | WO2006109900A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2257090A1 (en) | 2009-05-28 | 2010-12-01 | Lg Electronics Inc. | Data unit reception management method and related system and device |
CN101931872A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Method for transmitting logical channel identification in MBMS and system thereof |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101637584B1 (en) * | 2009-04-21 | 2016-07-07 | 엘지전자 주식회사 | METHOD OF MAINTAINING A QUALITY OF SERVICE(QoS) IN A WIRELESS COMMUNICATION SYSTEM |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030194992A1 (en) * | 2002-04-09 | 2003-10-16 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting control information for multimedia broadcast/multicast service in a mobile communication system |
US20040017809A1 (en) * | 2002-05-18 | 2004-01-29 | Jin-Young Park | Selective service method in multicast system |
US20040022218A1 (en) * | 2002-07-31 | 2004-02-05 | Samsung Electronics Co., Ltd. | Apparatus and method for providing MBMS sevice in a mobile communication system |
US20040057387A1 (en) * | 2002-06-22 | 2004-03-25 | Lg Electronics, Inc. | Multimedia service providing method for radio mobile communication system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6839565B2 (en) * | 2002-02-19 | 2005-01-04 | Nokia Corporation | Method and system for a multicast service announcement in a cell |
KR100893070B1 (en) * | 2002-09-19 | 2009-04-17 | 엘지전자 주식회사 | Method and apparatus for providing and receiving multicast service in a radio communication system |
EP1467586B1 (en) * | 2003-04-09 | 2010-05-19 | Samsung Electronics Co., Ltd. | Method for cell reselection in an MBMS mobile communication system |
KR100964684B1 (en) * | 2003-09-29 | 2010-06-21 | 엘지전자 주식회사 | Method for providing broadcast and multicast service in mobile communication system |
US20050076369A1 (en) * | 2003-10-06 | 2005-04-07 | Zhijun Cai | Method and apparatus for assigning temporary mobile group identity in a multimedia broadcast/multicast service |
-
2005
- 2005-04-15 CN CNA2005800494405A patent/CN101160752A/en active Pending
- 2005-04-15 JP JP2008506357A patent/JP4516621B2/en not_active Expired - Fee Related
- 2005-04-15 MX MX2007012772A patent/MX2007012772A/en active IP Right Grant
- 2005-04-15 WO PCT/KR2005/001092 patent/WO2006109900A1/en active Application Filing
- 2005-04-15 AU AU2005330412A patent/AU2005330412B2/en not_active Ceased
- 2005-04-15 EP EP05764868A patent/EP1875636A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030194992A1 (en) * | 2002-04-09 | 2003-10-16 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting control information for multimedia broadcast/multicast service in a mobile communication system |
US20040017809A1 (en) * | 2002-05-18 | 2004-01-29 | Jin-Young Park | Selective service method in multicast system |
US20040057387A1 (en) * | 2002-06-22 | 2004-03-25 | Lg Electronics, Inc. | Multimedia service providing method for radio mobile communication system |
US20040022218A1 (en) * | 2002-07-31 | 2004-02-05 | Samsung Electronics Co., Ltd. | Apparatus and method for providing MBMS sevice in a mobile communication system |
Non-Patent Citations (1)
Title |
---|
See also references of EP1875636A4 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2257090A1 (en) | 2009-05-28 | 2010-12-01 | Lg Electronics Inc. | Data unit reception management method and related system and device |
US8447338B2 (en) | 2009-05-28 | 2013-05-21 | Lg Electronics Inc. | Data unit reception management method and related system and device |
CN101931872A (en) * | 2009-06-26 | 2010-12-29 | 中兴通讯股份有限公司 | Method for transmitting logical channel identification in MBMS and system thereof |
US8649311B2 (en) | 2009-06-26 | 2014-02-11 | Hui Xu | Method and system for transmitting logical channel identifier in MBMS |
CN101931872B (en) * | 2009-06-26 | 2015-04-01 | 中兴通讯股份有限公司 | Method for transmitting logical channel identification in MBMS and system thereof |
Also Published As
Publication number | Publication date |
---|---|
MX2007012772A (en) | 2008-01-14 |
AU2005330412B2 (en) | 2009-06-25 |
AU2005330412A1 (en) | 2006-10-19 |
JP4516621B2 (en) | 2010-08-04 |
CN101160752A (en) | 2008-04-09 |
EP1875636A1 (en) | 2008-01-09 |
JP2008537869A (en) | 2008-09-25 |
EP1875636A4 (en) | 2012-05-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7394778B2 (en) | Mapping of point of multipoint service identifications | |
EP1559214B1 (en) | Method of multiplexing logical channels in mobile communication system and apparatus thereof | |
JP4205058B2 (en) | Processing data units for transmission through the same channel | |
US7864722B2 (en) | Multicast service providing method in mobile communication system | |
US7647429B2 (en) | Providing multicast services in a point-to-multipoint manner for a radio communication system | |
US8433346B2 (en) | Method of processing control information messages for point-to-multipoint services | |
AU2005330412B2 (en) | Mapping of MBMS service identifications | |
RU2388151C2 (en) | Display of multimedia broadcast and multicast services (mbms) identification |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200580049440.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2008506357 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005330412 Country of ref document: AU Ref document number: MX/a/2007/012772 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2005330412 Country of ref document: AU Date of ref document: 20050415 Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2005330412 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005764868 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007132245 Country of ref document: RU |
|
WWP | Wipo information: published in national office |
Ref document number: 2005764868 Country of ref document: EP |