WO2008068219A1 - Procédé et système pour optimiser des ressources de liaison descendante - Google Patents

Procédé et système pour optimiser des ressources de liaison descendante Download PDF

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Publication number
WO2008068219A1
WO2008068219A1 PCT/EP2007/063147 EP2007063147W WO2008068219A1 WO 2008068219 A1 WO2008068219 A1 WO 2008068219A1 EP 2007063147 W EP2007063147 W EP 2007063147W WO 2008068219 A1 WO2008068219 A1 WO 2008068219A1
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WIPO (PCT)
Prior art keywords
information
resources
combination
selecting
data
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PCT/EP2007/063147
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English (en)
Inventor
Jing He
Chun Hai Yao
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Nokia Siemens Networks Gmbh & Co. Kg
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Application filed by Nokia Siemens Networks Gmbh & Co. Kg filed Critical Nokia Siemens Networks Gmbh & Co. Kg
Publication of WO2008068219A1 publication Critical patent/WO2008068219A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1836—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters

Definitions

  • the present invention relates to the field of telecommunication, and more particularly to a method and a system for optimizing downlink resources for mobile communication .
  • the 3rd Generation Communication Systems (3G) can transmit not only the high-quality, point-to-point multimedia voice and data services, but also the point-to- multipoint broadcast/multicast services which have higher service requirements than the current data services, such as online movie/video on demand, and TV broadcast.
  • Such point-to- point or point-to-multipoint services are called multimedia broadcast/multicast services (MBMS) .
  • MBMS multimedia broadcast/multicast services
  • the downlink resources (such as output power, code set resources, etc.) in the system will be restricted. If there exist a plurality of MBMS services at the same time in the network, since the output power and the code set resources of a base station are limited, when a plurality of users access the system in its circuit domain and packet domain, the number of users allowed will be limited.
  • a fixed data rate for the MBMS service is set by a Wireless Network Controller (RNC) for each cell in which the MBMS service has been provided, and the MBMS service is transmitted to each cell at the same rate.
  • the output power, the code set resources of each cell for the MBMS service in the network are set in advance by the system, so as to avoid exhausting the output power and the code set resources in the cell.
  • the Wireless Network Controller cannot set different rates for the MBMS services according to the load conditions of wireless resources in those cells. Therefore, the following problem will occur: during a MBMS service session, if a plurality of user equipment
  • UE access the network simultaneously, and when the number of user equipment accessing the network reaches a threshold, the network will reject the access by new user equipment or stop the MBMS service.
  • the present invention aims to provide a method and a system for optimizing downlink resources so as to solve the aforementioned problems that during a MBMS service session, when the number of user equipment accessing the network reaches a network threshold, the network will reject the access by new user equipment or stop the MBMS service.
  • the present invention provides a method for optimizing the downlink resources during communication, comprising: dividing broadcast/multicast data to be transmitted into a combination of basic information and enhanced information by broadcast/multicast data providing equipment, and sending the combined information to network equipment downstream thereof; selecting an information combination including at least the basic information from broadcast/multicast data received by the network equipment carrying the broadcast/multicast data currently being transmitted, and sending said selected information combination to at least one other network equipment downstream thereof.
  • said process for selecting the information combination including at least the basic information from the received broadcast/multicast data can comprise: selecting one basic information, or a combination of a basic information and at least one enhanced information according to system resources, transmission resources, wireless resources, terminal resources, or a combination of said resources of its own and of network equipment waiting for receiving the broadcast/multicast data.
  • said selecting step can be performed according to an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system's capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub- carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the network equipment waiting for receiving the broadcast/multicast data .
  • said process for selecting the information combination including at least the basic information from the received broadcast/multicast data can comprise: selecting the basic information, or the information combination comprising at least one basic information and at least one enhanced information according to the number of user(s) currently accessing the network, and the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • said step for sending said selected information combination to at least one other network equipment downstream thereof can comprise: sending at least one selected information to the at least one other network equipment downstream thereof at a speed of the selected information after having been combined.
  • One solution is to send said information combination after having been selected to another network equipment downstream thereof, said network equipment is a terminal, and said sending process comprises: sending at least one selected information to the terminal in at least one region at a speed of the selected information after having been combined. It can also be to send the selected information combination to two or more network equipment downstream thereof, for example a SGSN sends said information combination to a plurality of SGSN downstream thereof; or a SGSN sends said information combination to a plurality of RNC downstream thereof.
  • the method can further comprise: selecting among the received information by the terminal by using its own processing capability, and processing the information selected.
  • the present invention also provides a further method for optimizing the downlink resource, comprising: encoding broadcast/multicast data into a combination of at least two broadcast data streams of different speeds by broadcast/multicast data providing equipment, and sending said combination of data streams to network equipment downstream thereof; selecting among the received combination of broadcast/multicast data streams by the network equipment currently carrying said broadcast/multicast data, and sending the selected data stream or the combination of data streams to at least one other network equipment downstream thereof.
  • said process for selecting among the received combination of broadcast/multicast data streams can comprise: selecting at least one data stream according to the system resources, transmission resources, wireless resource, terminal resources, or a combination of said resources of its own and of the network equipment waiting for receiving the broadcast/multicast data.
  • said selecting step is performed according to an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system's capacities in calculating, dispatching and processing, equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub- carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the network equipment waiting for receiving the broadcast/multicast data, so as to select at least one data stream.
  • said process for selecting among the received combination of broadcast/multicast data streams can comprise: selecting at least one data stream by using the number of user(s) currently accessing the network, and the service quality, service priority, service characteristics or a combination thereof customized by the user(s) in advance.
  • the selected data stream or the combination of data streams can be sent to at least one other network equipment downstream thereof, said network equipment is a terminal, and said sending process comprises: sending at least one selected data stream to the terminal in at least one region .
  • the method can further comprise: selecting among the received data streams by the terminal by using theist own processing capability, and processing the data stream selected.
  • the present invention further provides a system for optimizing downlink resources, comprising: equipment for providing broadcast/multicast data, comprising an information generating unit and an information sending unit, wherein said information generating unit is used for dividing the broadcast/multicast data into a combination of basic information and enhanced information; and said information sending unit is used for sending the information combined in the information generating unit to data transferring network equipment downstream thereof; network equipment for transferring data, comprising an information selecting unit and an information transmitting unit, wherein said information selecting unit is used for selecting an information combination comprising at least the basic information from the received broadcast/multicast data; and said information transmitting unit is used for transmitting the information combination selected by the selecting unit to at least one other network equipment downstream thereof.
  • said information selecting unit is used for selecting the basic information or an information combination including at least one basic information and at least one enhanced information, according to the system resources, transmission resources, wireless resources, terminal resources or a combination of said resources of its own and of the data transferring network equipment downstream thereof.
  • said information selecting unit is used for performing the selection by using an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the data transferring network equipment downstream thereof.
  • said information selecting unit is used for selecting the basic information or for selecting a combination of at least one basic information and at least one enhanced information by using the number of user(s) currently accessing the network or the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • said information transmitting unit is used for transmitting at least one selected information to another network equipment downstream thereof at a speed of the selected information after having been combined.
  • said information transmitting unit is used for transmitting at least one selected information to at least one other network equipment downstream thereof in at least one region at a speed of the selected information after having been combined;
  • said another network equipment downstream thereof is a terminal, which is also used for selecting among the received information by using the processing capability of its own, and for processing the selected information.
  • the present invention also provides a system for optimizing downlink resources, comprising: equipment for providing a broadcast/multicast data stream, comprising a data stream generating unit and a data stream sending unit, wherein said data stream generating unit is used for encoding the broadcast/multicast data into a combination of at least two broadcast/multicast data streams of different speeds; and said data stream sending unit is used for sending the data streams combined by the stream generating unit to data stream transferring network equipment downstream thereof; network equipment for transferring data streams, comprising a data stream selecting unit and a data stream transmitting unit, wherein said data stream selecting unit is used for selecting a data stream or a combination of data streams from the received combination of the broadcast/multicast data streams; and said data stream transmitting unit is used for transmitting the data stream or the combination of data streams selected by the selecting unit to at least one other network equipment downstream thereof.
  • said data stream selecting unit is used for selecting at least one data stream according to the system resources, transmission resources, wireless resources, terminal resources, or
  • said data stream selecting unit is used for selecting at least one data stream according to an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the data transferring network equipment downstream thereof.
  • said data stream selecting unit is used for selecting at least one data stream by using the number of user(s) currently accessing the network or the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • said data stream transmitting unit is used for transmitting at least one selected data stream to another network equipment downstream thereof in at least one region (for example, a GGSN sends the data stream to more than two RNC downstream thereof) ; said another network equipment downstream thereof is a terminal, which is further used for selecting among the received data stream by using its own processing capability, and for processing the selected data stream.
  • the method of the present invention can effectively increase the number of users accessing the MBMS service data in the network; the network equipment in the method and system of the present invention can send the MBMS service data by selecting a speed of different information combination according to the conditions of the network resources, or the service quality customized by the user(s), or the number of user(s), and it also can send the MBMS service data by selecting at least one information stream from a group of information streams. Therefore, with certain network resources, the method and system of the present invention can dynamically adapt to the number of users accessing the MBMS service data in the network by adjusting the speed of transmitting the service data, thereby releasing the network pressure and improving the level of the users' experience.
  • Fig.l is a flowchart of an embodiment one of the present invention
  • Fig.2 is a WCDMA system structural diagram of the embodiment one of the present invention
  • Fig.3 is a flowchart of an embodiment two of the present invention.
  • Fig.4 is a WCDMA system structural diagram of the embodiment two of the present invention.
  • Fig.5 is a system structural diagram for realizing the embodiment one of the present invention.
  • Fig.6 is a system structural diagram for realizing the embodiment two of the present invention.
  • the transmitting speed of the MBMS data is fixed, and after the power and code set for transmitting the MBMS data are set in advance in the network, the network will reject the access of new user equipment or stop the MBMS service when the number of user equipment accessing the network reaches a network threshold during a MBMS service session.
  • the present invention provides a method for optimizing the downlink resources.
  • the embodiment one of the present invention comprises :
  • Step SlOl dividing broadcast/multicast data to be transmitted into a combination of basic information and enhanced information by broadcast/multicast data providing equipment, and sending the combined information to network equipment downstream thereof;
  • Step S102 selecting an information combination including at least the basic information from broadcast/multicast data received by the network equipment carrying the broadcast/multicast data currently being transmitted, and sending said selected information combination to at least one other network equipment downstream thereof.
  • Step S102 said selected information combination can be transmitted to one network equipment downstream thereof, and it also can be transmitted to two or more of the network equipment downstream thereof.
  • the provided MBMS service data can be divided into a combination of basic information and enhanced information of different speeds.
  • the basic information divided thereby can be received and used separately by a UE, wherein, in the data of a MBMS video service, the basic information can be played on a user terminal, and the video quality based on the basic information can meet the basic requirements by the user(s), and the basic information is unique in each class of MBMS services;
  • the enhanced information comprises one part or a plurality of parts as a complement to the basic information, and the combination of the basic information and the enhanced information can provide a higher quality video to the user(s) .
  • the current data speed of the MBMS service is 128kbit/s, and there are various combination forms in which the MBMS service data are divided into the basic information and the enhanced information of different speeds, as shown in Table 1, and three preferred combination forms of the present invention are given below:
  • the network equipment for transmitting MBMS data can send the basic information only at a speed of 16kbit/s, or send the information at the speed of 32kbit/s which is the basic information combined with the enhanced information 1, or send the information at the speed of 64kbit/s which is the basic information combined with the enhanced information 1 and the enhanced information 2, or send the combination of the complete information at the speed of 128kbit/s.
  • the information is received by User Equipment
  • the UE selects the information from the received information to perform a combination and thereafter played it to the user(s) .
  • the video quality displayed by the User Equipment is ordinary if the information is the basic information at 16kbit/s; the video quality displayed by the User Equipment would be better if the information is a combination of the basic information and the enhanced information 1 at 32kbit/s; the video quality displayed by the User Equipment would be favourable if the information is a combination of the basic information, the enhanced information 1 and the enhanced information 2 at 64kbit/s; and the video quality displayed by the User Equipment would be more favourable if the information is a combination of the complete information at 128kbit/s.
  • WCDMA Wideband Code Division Multiple Access
  • Step 1 the information of a MBMS service is encoded by the MBMS data content provider.
  • the original information is encoded into the basic information and the enhanced information, wherein the enhanced information can comprise a plurality of information parts, and these information parts can be divided.
  • the basic information can be used independently by UE, while the enhanced information can only be used after having been combined with the basic information;
  • Step 2 when an MBMS service begins, the complete encoded information is transmitted to a Broadcast-Multicast Service Centre (BM-SC) by the MBMS data content provider; the complete encoded information comprises various combinations of the basic information with the enhanced information, and the combination forms can be any one of the aforementioned various forms shown in Table.1; and in this embodiment, the first combination is chosen .
  • BM-SC Broadcast-Multicast Service Centre
  • Step 3 the BM-SC establishes a logic connection with the downstream node as a Gateway GPRS Support Node (GGSN) requiring the transmission of the MBMS service, and transmits the complete encoded information to such downstream nodes GGSN;
  • GGSN Gateway GPRS Support Node
  • Step 4 the GGSN having received the MBMS service establishes a logic connection with the downstream Serving GPRS Support Nodes (SGSNs) requiring the transmission of the MBMS service, selects an proper combination of the basic information and the enhanced information from the received information according to the resources conditions of the GGSN itself and the downstream branch SGSN; and transmits to these SGSNs at 64kbit/s the MBMS data selected by GGSN after having combined the basic information, the enhanced information 1 and the enhanced information 2;
  • SGSNs Serving GPRS Support Nodes
  • Step 5 the SGSN having received the MBMS service establishes a logic connection with the downstream node Wireless Network Controller (RNC) requiring the transmission of the MBMS service, selects a proper combination of the basic information and the enhanced information from the received information to send to RNC according to the resources conditions of the SGSN itself and the downstream branch RNC; and the SGSN transmits at 64kbit/s the information to RNC.
  • RNC Wireless Network Controller
  • Step 6 the RNC having received the MBMS service establishes a wireless carrying connection respectively with each cell requiring the transmission the MBMS, selects a proper combination of the basic information and the enhanced information from the received information according to the conditions of the wireless resources of the RNC itself and the subordinate cell requiring the transmission of the MBMS service, and transmits to these cells; the RNC transmits at 64kbit/s the information to each cell, and in Cell 1 the basic information is transmitted at 16kbit/s, in Cell 2 the information after combining the basic information and the enhanced information 1 is transmitted at 32kbit/s, and in Cell 3 the information after combining the basic information, the enhanced information 1 and the enhanced information 2 is transmitted at 64kbit/s.
  • the information When there are sufficient resources, it is also possible for the information to be transmitted at different speeds after performing various combinations in any one cell.
  • Step 7 the user equipment having received the MBMS service can receive the information transmitted from RNC, and select according to its own capability the basic information or an information combination of the basic information and the enhanced information to play for the user(s); and since the configuration of each user equipment is different, the user equipment can also select the speed corresponding to the data combination to play for the user(s) .
  • the MBMS data content provider of the embodiment provides equipment for said broadcast/multicast data in the method of the present invention, wherein, the MBMS data content provider uses equipment for encoding the MBMS service data, which encodes the MBMS service data into the basic information and the enhanced information, and sends the same to network equipment downstream thereof.
  • the network equipment in each network source can perform the selection, combine the selected information into the information of different speeds and send to other network equipment according to its own conditions of the resources and that of the network equipment waiting for receiving the MBMS service data, such as an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time- slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof and so on, or also through the number of user(s) currently accessing the network, and the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • the number of users accessing the network for using the MBMS service is increased by selecting the information combinations of different speeds to send the MBMS service data.
  • the present invention also provides another method for optimizing the downlink resources, which method is shown in Fig.3, and the embodiment two of the present invention includes :
  • Step S301 encoding broadcast/multicast data into a combination of at least two broadcast data streams of different speeds by broadcast/multicast data providing equipment, and sending the same to network equipment downstream thereof;
  • Step S302 selecting among the received combination of broadcast/multicast data streams by the network equipment currently carrying said broadcast/multicast data, and sending the selected data stream or the combination of data streams to at least one other network equipment downstream thereof.
  • the MBMS data content provider in the embodiment two provides equipment for said broadcast/multicast data of the method of the present invention, and when the MBMS service data is provided, the provided MBMS data are divided into a plurality of MBMS information streams of different speeds for transmitting to the downstream network equipment, and the different MBMS information streams correspond to different levels of service quality.
  • Step 1 the MBMS data content provider encodes the information of a MBMS service.
  • the initial information is encoded into the independent information streams of different speeds according to the service quality, and these information streams can be received independently and correctly by user equipment and can be played to the user(s) .
  • a plurality of independent information streams of different speeds for a MBMS service form an information stream group of the service. Since the speed of each information stream is different, the information quantity carried in each information stream is different and the display quality at the receiving end of each user is different.
  • Step 2 when a MBMS service starts, the MBMS data content provider sends the encoded information stream group comprising all the independent information streams of different speeds of the service to BM-SC; in this embodiment, the information stream group comprises three information streams at 32kbit/s, 64kbit/s and 128kbit/s.
  • Step 3 the BM-SC establishes at least one logic connection with the downstream nodes GGSNs requiring the transmission of the MBMS service, and transmits the encoded information stream group comprising all the independent information streams to these downstream nodes GGSNs;
  • Step 4 the GGSNs having received the MBMS service establish at least one logic connection with the downstream nodes SGSNs requiring the transmission of the MBMS service, select proper independent information streams in the received information stream group to send to these SGSNs according to conditions of the resources of the GGSNs themselves and that of the downstream branch nodes SGSNs; and transmit the information stream group of three speeds to SGSNs.
  • Step 5 the SGSNs having received the MBMS service establish at least one logic connection with the downstream node RNC requiring the transmission the MBMS service, select a proper independent stream in the received information stream group to send to the RNC according to the resources conditions of SGSN itself and the downstream branch node RNC; and the SGSNs transmit the information stream group of three speeds to the SGSNs.
  • Step 6 the RNC having received the MBMS service establishes at least one wireless carrying connection respectively with each cell requiring the transmission the MBMS, selects a proper independent information stream in the received information group according to the resources conditions of the RNC itself and that of the subordinate cell requiring the transmission the MBMS service, and transmits in these cells; and in the Cell 1 the information stream is transmitted at 32kbit/s and 64kbit/s, in the Cell 2 the information stream is transmitted at 64kbit/s and 128kbit/s, and in the Cell 3 the information stream is transmitted at 128kbit/s.
  • Step 7 the user having received the MBMS service can select to receive a certain information stream transmitted by RNC, and has it played.
  • the network equipment in each network source can make the selection and select the information stream of different speeds in the information group to send to other network equipment, according to the resources conditions of the equipment itself and the network equipment waiting for receiving the MBMS service data, such as an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof and so on, or also through the number of user(s) currently accessing the network, and the service quality, service priority, service characteristics or a combination thereof customized by the user(s) in advance.
  • the network carries a relatively large load due to more user equipment accessing the MBMS
  • the present invention also provides a system for optimizing the downlink resource.
  • the system is shown in Fig.5, which comprises : equipment 501 for providing broadcast/multicast data, comprising an information generating unit 502 and an information sending unit 503, wherein said information generating unit 502 is used for dividing the broadcast/multicast data into a combination of basic information and enhanced information; and said information sending unit 503 is used for sending the information combined in the information generating unit 502 to data transferring network equipment downstream thereof; network equipment 504 for transferring data, comprising an information selecting unit 505 and an information transmitting unit 506, wherein said information selecting unit 505 is used for selecting an information combination comprising at least the basic information from the received broadcast/multicast data; and said information transmitting unit 506 is used for transmitting the information combination selected by the selecting unit to another network equipment downstream thereof.
  • said information selecting unit 505 is used for selecting the basic information or an information combination including at least one basic information and at least one enhanced information, according to the system resources, transmission resources, wireless resources, terminal resources or a combination of said resources of its own and of the data transferring network equipment downstream thereof.
  • said information selecting unit 505 is used for performing the selection by using an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time- slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the data transferring network equipment downstream thereof .
  • said information selecting unit 505 is used for selecting the basic information or for selecting a combination of at least one part of basic information and at least one part of enhanced information by using the number of user(s) currently accessing the network or the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • said information transmitting unit 506 is used for transmitting at least one selected information to another network equipment downstream thereof at a speed of the selected information after having been combined.
  • said information transmitting unit 506 is used for transmitting at least one selected information to another network equipment downstream thereof in at least one region at a speed of the selected information after having been combined; said another network equipment downstream thereof is a terminal, which is also used for selecting among the received information by using the processing capability of its own, and for processing the selected information.
  • the system of the embodiment one of the present invention is used in a WCDMA system, and the broadcast/multicast data providing equipment 501 can be used in the MBMS data content provider, so as to realize the generating and transmitting functions of the basic information and the enhanced information in the broadcast/multicast data, and the data transferring equipment 504 can be used in GGSN, SGSN, and RNC, to realize the selecting and transferring functions of the basic information and the enhanced information.
  • the present invention also provides a system for optimizing the downlink resources, comprising: equipment 601 for providing a broadcast/multicast data stream, comprising a data stream generating unit 602 and a data stream sending unit 603, wherein said data stream generating unit 602 is used for encoding the broadcast/multicast data into a combination of at least two broadcast/multicast data streams of different speeds; and said data stream sending unit 603 is used for sending the data streams combined by the stream generating unit to data stream transferring network equipment downstream thereof; network equipment 604 for transferring data streams, comprising a data stream selecting unit 605 and a data stream transmitting unit 606, wherein said data stream selecting unit 605 is used for selecting a data stream or a combination of data streams from the received combination of the broadcast/multicast data streams; and said data stream transmitting unit 606 is used for transmitting the data stream or the combination of data streams selected by the selecting unit 605 to at least one other network equipment downstream thereof.
  • equipment 601 for providing a broadcast/multicast data stream comprising a data stream
  • said data stream selecting unit 605 can be used for selecting at least one data stream according to the system resources, transmission resources, wireless resources, terminal resources, or a combination of said resources of its own and of the data transferring network equipment downstream thereof.
  • said data stream selecting unit 605 is used for selecting at least one data stream according to an internal system bandwidth, a transmission bandwidth between equipment, a wireless bandwidth, an equipment system' s capacities in calculating, dispatching and processing, the equipment's memory/cache, the system's maximum data flow rate, output power, code set resources, time-slot resources, sub-carrier resources, impulse electric wave resources, number of channels, quality of channels, number of connections to be carried, number of circuit connections, number of IP connections, or a combination thereof of its own and of the data transferring network equipment downstream thereof.
  • said data stream selecting unit 605 can be used for selecting at least one data stream by using the number of user(s) currently accessing the network or the service quality, service priority, service characteristics, or a combination thereof customized by the user(s) in advance.
  • said data stream transmitting unit 606 can be used for transmitting at least one selected data stream to at least one other network equipment downstream thereof in at least one region; said another network equipment downstream thereof is a terminal, which is further used for selecting among the received data stream by using its own processing capability, and for processing the selected data stream.
  • the system of the embodiment two of the present invention is used in a WCDMA system, and the equipment 601 for providing a broadcast/multicast data stream can be used in the MBMS data content provider, so as to realize the generating and transmitting functions of the broadcast/multicast data stream group, and the equipment 604 for transferring data stream can be used in, for example, GGSN, SGSN, RNC, to realize the selecting and transferring functions of the data stream or data stream group.
  • the MBMS service is taken as an example, and as to the method and system of the present invention, not only the MBMS service can be realized, but also various broadcast, multicast services can be realized in the present invention.
  • the method of the present invention and the system for realizing the method can be applied in various mobile communication systems for providing broadcast/multicast services, and they can be applied extendedly in many other wireless communication applications.

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  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne un procédé et un système pour optimiser les ressources de liaison descendante dans le domaine de la communication. Le procédé comprend les étapes suivantes : - un équipement pour fournir des données en diffusion/multidiffusion qui divise les données en diffusion/multidiffusion transmises dans une combinaison d'informations de base et des informations améliorées et envoie les informations combinées à son flux descendant de l'équipement réseau, - un équipement réseau pour transporter les données en diffusion/multidiffusion actuellement transmises qui sélectionne une combinaison d'informations comprenant au moins les informations de base des données en diffusion/multidiffusion reçues et envoie la combinaison d'informations sélectionnées sur au moins son flux descendant d'un autre équipement réseau. L'invention concerne également un système correspondant. Le réglage de la vitesse de transmission des données de service permet au procédé et au système d'ajuster dynamiquement les ressources allouées aux services de diffusion/multidiffusion, de sorte que le même service envoie des données à différentes vitesses, ce qui libère la charge du réseau, améliore les capacités de fonctionnement et les capacités de service de l'opérateur et augmente en même temps le niveau d'expérience de l'utilisateur.
PCT/EP2007/063147 2006-12-06 2007-12-03 Procédé et système pour optimiser des ressources de liaison descendante WO2008068219A1 (fr)

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CNA2006101640392A CN101198158A (zh) 2006-12-06 2006-12-06 一种下行链路资源优化的方法和系统
CN200610164039.2 2006-12-06

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WO2008068219A1 true WO2008068219A1 (fr) 2008-06-12

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CN102905225A (zh) * 2012-09-17 2013-01-30 南京邮电大学 一种mbms系统的自适应调度方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1039661A1 (fr) * 1999-03-03 2000-09-27 Sony International (Europe) GmbH Canal multidestinataire pour un système AMRC
US20040248603A1 (en) * 2003-06-03 2004-12-09 Canoy Michael-David N. Method and apparatus for controlling a broadcast communication data rate in a wireless communication system
EP1519614A1 (fr) * 2003-09-29 2005-03-30 Lucent Technologies Inc. Procédé de distribution dynamique de débit
US20060030330A1 (en) * 2004-07-20 2006-02-09 Black Peter J Methods and systems for variable rate broadcast with soft handoff
WO2006107744A2 (fr) * 2005-04-01 2006-10-12 Interdigital Technology Corporation Procede et appareil permettant de fournir des services de diffusion a debits multiples

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1039661A1 (fr) * 1999-03-03 2000-09-27 Sony International (Europe) GmbH Canal multidestinataire pour un système AMRC
US20040248603A1 (en) * 2003-06-03 2004-12-09 Canoy Michael-David N. Method and apparatus for controlling a broadcast communication data rate in a wireless communication system
EP1519614A1 (fr) * 2003-09-29 2005-03-30 Lucent Technologies Inc. Procédé de distribution dynamique de débit
US20060030330A1 (en) * 2004-07-20 2006-02-09 Black Peter J Methods and systems for variable rate broadcast with soft handoff
WO2006107744A2 (fr) * 2005-04-01 2006-10-12 Interdigital Technology Corporation Procede et appareil permettant de fournir des services de diffusion a debits multiples

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