WO2008072691A1 - 通信方法および無線通信システム - Google Patents
通信方法および無線通信システム Download PDFInfo
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- WO2008072691A1 WO2008072691A1 PCT/JP2007/074023 JP2007074023W WO2008072691A1 WO 2008072691 A1 WO2008072691 A1 WO 2008072691A1 JP 2007074023 W JP2007074023 W JP 2007074023W WO 2008072691 A1 WO2008072691 A1 WO 2008072691A1
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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
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/16—Gateway arrangements
Definitions
- the present invention relates to a communication method and a wireless communication system for realizing MBS (Multicast and Broadcast Service).
- MBS Multicast and Broadcast Service
- MBS Multicast and Broadcast
- CID Connection Identifier
- the effective range of one multicast connection identifier is called an MBS zone, and is identified by an MBS identifier (MBS Zone Identifier).
- MBS Zone Identifier MBS identifier
- the radio base station can broadcast an information element including an MBS zone identifier (for example, non-patent document 2 8. 4. 5. 3. 12 or 6. 3. 2. 3. 43 6. See Chapter 9). It is possible to broadcast multiple MBS zone identifiers to cope with cases where the radio base station is at the boundary of multiple MBS zones.
- MBS zone identifier for example, non-patent document 2 8. 4. 5. 3. 12 or 6. 3. 2. 3. 43 6. See Chapter 9. It is possible to broadcast multiple MBS zone identifiers to cope with cases where the radio base station is at the boundary of multiple MBS zones.
- 3GPP 3rd Generation Partnership Project
- MBMS Multimedia Broadcast / Multicast Service
- Non-Patent Document 1 Hattori, Fujioka, edited by “Revised Wireless Broadband Textbook High Speed IP Wireless”, Impress R & D, P190—191, June 21, 2006
- Non-Patent Document 2 IEEE Std 802.16e- 2005, "Amendment 2: Physical and Medium Access ontrol Layers for Combined Fixed and Mobile Operation in License d Bands and Corrigendum, February 28, 2006
- Non-Patent Document 3 edited by Hattori, Fujioka, “Revised Textbook for Wireless Broadband 3.5G / Next Generation Mono,” Impress, P271—280, April 11, 2006
- MBS Mobility Management Function
- a broadcast-type MBS such as terrestrial digital broadcasting for mobile units
- communication-type MBS such as video conferencing with large numbers of people, membership-based broadcasting services, and video “on” demand
- the location range is limited as much as possible from the viewpoint of effective use of frequency resources.
- Service is desirable. Therefore, from the viewpoint of MBS placement, it is desirable to set a wide MBS zone in the case of the former broadcast-type MBS, and a limited range in the case of the latter communication-type MBS. It is desirable to set up an MBS zone with
- the conventional MBS technology cannot have a plurality of MBS zone arrangements at the same time. For this reason, there was a problem that services using a plurality of different MBS zone arrangements could not be performed simultaneously.
- the function of setting a network connection is not considered, and there is a problem that it is difficult to continue using MBS.
- the present invention has been made in view of the above, and a plurality of MBS zone arrangements including an MBS zone arrangement including an MBS zone having a wide range and an MBS zone arrangement including an MBS zone having a limited range.
- MBS zone arrangement including an MBS zone having a wide range
- MBS zone arrangement including an MBS zone having a limited range.
- Can provide MBS in parallel, and at the same time, the mobile station The purpose is to obtain a communication method and a wireless communication system that can continue to use the MBS service even when moving in the MBS zone.
- the present invention provides an MBS zone that has an MBS (Multicast and Broadcast Service) function and uses the same connection identification information.
- a communication method in a wireless communication system comprising: a content classification step of classifying MBS content into a plurality of MBS types based on the characteristics of MBS control device power MBS content; andthe MBS control device includes the MBS control device.
- An MBS zone arrangement management step for managing information in which an MBS identifier corresponding to the MBS zone, a base station configuring the MBS zone, and a gateway device related to the MBS zone are associated with each other, and the MBS control device Power Sends MBS zone configuration information including the managed information to the gateway device.
- An MBS zone configuration information transfer step in which the gateway device holds the MBS zone configuration information and transfers the MBS zone configuration information to a base station under its own device, and the base station transmits the MBS zone configuration information.
- a terminal that holds an MBS zone identifier for each MBS type based on the configuration information obtains connection identification information corresponding to the MBS zone identifier for each MBS type, and connects the connection identification information to its own station.
- a wireless communication step in which a terminal connected to the base station communicates with the base station based on the MBS type of the MBS content to be serviced and the received connection identification information. It is characterized by that.
- MBS content is classified into MBS types according to the characteristics of MBS, and a plurality of MBS zone arrangements corresponding to the MBS types are provided. Further, when a mobile station moves, between gateways Since mobile station registration information is transferred, MBS using multiple MBS zone arrangements can be provided in parallel, and services can be provided continuously when the mobile station moves. Play.
- FIG. 1 is a diagram illustrating a configuration example of a communication system according to an embodiment of the present invention.
- FIG. 2 is a diagram showing an example of an MBS content management table.
- Fig. 31 shows an example of a communication type MBS zone allocation management table.
- Fig. 3-2 shows an example of a broadcast-type MBS zone allocation management table.
- FIG. 4 is a flowchart of MBS zone initial setting.
- FIG. 5 is a diagram showing a system configuration example of a portion related to an operation when a mobile station participates in a multicast 'group G 2.
- FIG. 6 is a flowchart when the mobile station joins the multicast group G2.
- FIG. 7 is a diagram showing a system configuration example of a portion related to an operation when a mobile station participates in a multicast 'group G3.
- FIG. 8 is a flowchart when the mobile station joins the multicast group G3.
- FIG. 9 is a diagram showing a system configuration example of a portion related to an operation when a mobile station moves in an MBS zone.
- FIG. 10 is a flowchart of zone movement processing.
- FIG. 11 is a flowchart of proxy report processing for a query 1 'message.
- FIG. 1 is a diagram showing an example of a communication system configuration diagram of an embodiment including a gateway device, an MBS control device (control device), and a mobile station (terminal) according to the present invention.
- the communication system functions as a content server 1 storing content to be provided by multicast or broadcast and an entrance for MBS (Multicast and Broadcast Service) content distribution service.
- the MBS control device 2 that controls the entire system, the multicast 'routers 3-1, 3-2', and the wireless access network connected to the IP (Internet Protocol) multicast 'network GW (gateway) 4-1 and 4 2 that realize wireless access service in cooperation with each other, BS (wireless base station) 5—;!
- IP Internet Protocol
- BS wireless base station
- the MBS control device 2 has a service 'announcement function (a function for notifying users of information about services to be provided) and a membership & key management function (retention of information about users, user registration and data) for content distribution services. Key distribution function for protection, etc.) and session & transmission function (function to transmit MBS session and manage its schedule).
- MBS control device 2 has MBS zone allocation and transfer path management functions, and consists of multiple devices. You may be made to do.
- the content server 1 may be configured by a plurality of servers.
- the IP multicast 'network 7 is a network composed of multicast' routers 3-1 and 3-2 that transfer packets based on the IP multicast technology.
- A, B, and C represent examples of three positions when the mobile station 6 moves.
- Communication-type MBS zones 11, 12, 13 are MBS zones corresponding to communication-type MBS, and are assigned Zl l, Z12, Z13 force S as communication-type MBS zone identifiers for identifying communication-type MBS zones, respectively.
- the broadcast MBS zones 21 and 22 are MBS zones corresponding to the broadcast MBS, and are assigned to the broadcast MBS zone identifiers Z21 and Z22 for each broadcast type MBS zone. Shall.
- Multicast participation request messages 41, 42, and 43 are messages for requesting a change in the multicast / gnorepe participation state
- a multicast participation participation response message 44 is a response message to the multicast participation request
- a distribution tree change message is a message for instructing a change of the distribution tree connection
- a route change message 52, 53 is a message for requesting a change of the multicast route.
- Multicast 'group G2 multicast' group G3 is IP This is a multicast 'group based on multicast technology.
- the arrow marked G2 and the bold solid arrow indicate the multicast' group. Shows the flow of IP packets of G2.
- the arrow marked with G3 and the arrow with bold dashed lines show the flow of IP packets of multicast group G3.
- IP multicast technology is a technology that uses a special destination address called a multicast 'group.address' and transmits the same data simultaneously to all terminals participating in the multicast' group corresponding to that address.
- a multicast 'group is identified by a multicast' group address set as the destination in the IP header, and the IP bucket is forwarded to all terminals participating in the multicast group corresponding to that multicast group 'address'.
- Multicast 'Routers 3-1 and 3-2 manage the correspondence of host IP addresses participating in this multicast' group as membership information, and IP packets addressed to the multicast 'group' address are sent to the multicast 'group' Forward to all hosts participating in.
- To join a multicast 'group send a join notification for that host to the multicast router adjacent to the host.
- the multicast 'router then updates the membership information it manages.
- When leaving a multicast group, a deletion notification is sent to the adjacent multicast router.
- terminals participating in a multicast group will be referred to as participating stations.
- the MBS zone is a range that does not need to be registered even if the wireless base station to be wirelessly connected changes! For mobile stations, the wider the MBS zone, the better the usability.
- a mobile station can continue to receive content in the MBS zone without the need for re-registration. All radio base stations that make up the zone must also receive data addressed to the multicast group. For this reason, all radio base stations that make up one MBS zone will receive service delivery using all multicast groups to which mobile stations in that MBS zone are participating. Therefore, if the MBS zone is too wide, it is not preferable in terms of frequency utilization efficiency.
- the content server 1 stores communication-type MBS content X and broadcast-type MBS content Y. Then, the MBS control device 2 sets G2 and G3 as the multicast group address for each content stored in the content server 1, respectively. Further, the MBS control device 2 associates each content stored in the content server 1 with an MBS type provided for distinguishing MBS characteristics.
- MBS there are two types of MBS: communication MBS and broadcast MBS.
- the MBS control device 2 holds information associated with these contents in its own device as an MBS content management table.
- FIG. 2 is an example of an MBS content management table provided in the MBS control device.
- the multicast 'group' address is G2
- the MBS type is associated with the communication MBS.
- the multicast group address is G3
- the MBS type is associated with the broadcast MBS.
- the MBS control device 2 sets the MBS zone allocation for each MBS type, and holds the MBS zone allocation management table in its own device.
- An example of the MBS zone allocation management table is shown in Figures 3-1 and 3-2.
- Figure 3-1 shows an example of the MBS zone allocation management table (communication type MBS zone allocation management table) for managing the allocation of communication-type MBS zones
- Figure 3-2 shows the management of the allocation of broadcast-type MBS zones.
- An example of the MBS zone allocation management table (broadcast MBS zone allocation management table) is shown below.
- the communication-type MBS zone allocation management table includes communication-type MBS zone identifiers and gateways associated with the radio base stations constituting each communication-type MBS zone.
- the communication type MBS zone 12 identified by the communication type MBS zone identifier Z12 is composed of BS5-1 and BS5-2
- the communication type MBS zone identified by the communication type MBS zone identifier Z13. 13 indicates that it is composed of BS5-3 and BS5-4.
- the associated gateway represents a GW that has the BSs that make up each MBS zone.
- the broadcast-type MBS zone allocation management table is composed of broadcast-type MBS zone identifiers and gateways related to the radio base stations that make up each broadcast-type MBS zone.
- the broadcast type MBS zone 22 identified by the broadcast type MBS zone identifier Z22 is composed of BS51, BS5-2, BS53, BS54.
- FIG. 4 shows a flowchart of MBS zone initial setting.
- the MBS control device creates an MBS content management table as shown in FIG. 2 (step S11).
- the MBS control device 2 creates an MBS zone management table as described above for each MBS type included in the MBS content management table (step S12).
- the MBS controller 2 sends an MBS zone setting message to GW4 1 and 4 2 that are related gateways corresponding to each MBS zone identifier for each MBS type according to the created MBS zone allocation management table.
- the MBS zone setting message is a message for setting an MBS zone, including MBS zone configuration information (MBS zone identifier for each MBS type, information on BS groups constituting each MBS zone, related GWs, etc.). is there.
- GW 4-1 and 4 2 store the MBS zone configuration information (step S 14). Then, the GW 4-1 and 4-2 transfer the MBS zone setting message to the subordinate BS 5 —;! To 5 — 4 (step S 15).
- BS 5—;! To 5—4 upon receiving the MBS zone setting message, sets the MBS zone identifier in the own station for each MBS type (step S16).
- the CID corresponding to each MBS identifier is determined in advance, and each BS5;;! To 5-4 holds the correspondence.
- the CID for each MBS type is BS5—;! To 5—4 needs to transmit to the wireless terminal to its own station.
- BS5— ;! to 5-4 transmits to the wireless terminal in the initial registration process to BS5— ;! to 5-4.
- BS5— ;! to 5-4 are included in the broadcast information 3 including the MBS zone identifier and the corresponding CID for each MBS type and transmitted to each connected wireless line (step S17). .
- BS5-1 transmits the communication type MBS zone identifier Z12 and the broadcast type MBS zone identifier Z22 in the broadcast information.
- MBS zone identifier in the broadcast information, when the mobile station 6 moves, it is determined that the MBS zone has changed by receiving any of the broadcast information 3;! -34. The power to do S.
- the mobile station 6 can know the CID used for each MBS type of the participating multicast group, and can communicate using the CID corresponding to each MBS type.
- FIG. 5 is a system configuration diagram in which parts related to the operation when the mobile station 6 participates in the multicast 'group G 2 are extracted from FIG.
- the mobile station 6 can provide MBS content X (corresponding to multicasting group G2) and MBS content Y (corresponding to multicasting group G3) by the service 'announcement function provided in MBS control device, It is assumed that the multicast group address corresponding to each MBS content is G2 and G3, respectively.
- GW4-1 and 4-2 create a multicast group participation station list that is a list of participating stations participating in the multicast group based on the MBS zone configuration information and the mobile station multicast participation request. It shall be maintained and updated based on the multicast participation request from the mobile station. At this time, GW4-1, 4-2 holds the multicast group participation station list for the contents distributed to the MBS zone to which BS5— ;! to 5-4, which is under its own control, belongs.
- FIG. 6 shows a flowchart when the mobile station 6 joins the multicast group G2.
- Mobile station 6 is in position A, is wirelessly connected to base station BS5-1, and newly joins multicast group G2 to obtain MBS content X.
- the mobile station 6 designates a multicast “group” address (G2 in this case) and transmits a multicast participation request message to the BS 5-1 (step S21).
- BS5-1 forwards this multicast participation request message to MBS controller 2 via GW4-1 (steps S22 and S23).
- the MBS control device 2 receives this multicast participation request message, it performs authentication processing of the participating stations and refers to the MBS content management table shown in FIG.
- the MBS type (in this case, the communication type MBS) corresponding to the less G2 is acquired (step S24).
- the MBS control device 2 sends a multicast participation message that is a response message to the multicast participation message including the information that the MBS type of the multicast group G2 is a communication type MBS together with the authentication result of the participating station.
- Send a response message (step S25).
- GW4-1 forwards this multicast participation response message to BS5-1 (step S26).
- BS5-1 then forwards this multicast participation response message to mobile station 6 (step S27).
- the MBS control device 2 may notify the mobile station 6 of the MBS type of the multicast group by announcing the MBS type using the service announcement function! /.
- GW4-1 Upon receiving the multicast participation response message sent in step S25, GW4-1 adds to the multicast group G2! / And adds the mobile station 6 to the list of multicast group participation stations (step S28).
- GW4-1 refers to the MBS zone configuration information described above if mobile station 6 is the first participating station for multicast group G2 (if GW4-1 is not participating in multicast group G2) Then, a route change message is transmitted to the adjacent upstream multicast 'router 3-1 so that the own device and the mobile station 6 are added to the multicast' group G2 '(step S29).
- a route change message is transmitted to the multicast' router 3-1 so as to add the mobile station 6 to the multicast 'group G2.
- the path change message e.g., PI M (Protocol Independent Multicast) Purotokonore, IGMP in IPv4 (Internet Gr oup Management Protocol) , J in compliance etc.
- IPv6 I freeze that MLu (Multicast Listener Discovery) protocols 0 i n / The p rune message can be used.
- GW4-1 recognizes that it is a communication-type MBS content participation request based on the MBS type included in the multicast participation response message, and the IP packet addressed to the multicast'drupt address G2 is received.
- the data path is set so as to be transferred to BS5-1 and BS5-2 (step S30).
- the mobile station 6's multicast 'group G2 join process is performed and MBS content X can be distributed to the communication MBS zone 12. Become.
- FIG. 7 is a system configuration diagram extracted from FIG. 1 for parts related to the operation when the mobile station 6 participates in the multicast “Dulp G3” in order to receive the broadcast-type MBS content Y.
- FIG. 8 shows a flowchart when the mobile station 6 joins the multicast group G3.
- the operations up to step S27 are the same as those in the case of participating in the multicast 'group G2 in FIG.
- step S28a mobile station 6 is added to the multicast 'group for G3 multicast' group participating station list.
- Multicast 'Group G3 is a broadcast type MBS, and related gateways include GW4-2 as well as GW4-1.
- GW4-1 sends a distribution tree change message to GW4-2, and requests that GW4-2 also join the multicast group G3 (step S29a).
- step S29b GW4-1 and GW4-2 send a route change message to the upstream multicast router 3-1 so that IP packets addressed to multicast group G3 are delivered to the device (step S29b).
- step S30a GW4-1 and GW4-2 are assigned to the BS-5-1 and 5 under the respective self-registration of the IP packets addressed to the manocast cast group G3 address G3. — Set the data path to forward to 2, BS5- 3, 5— 4
- FIG. 9 is a system configuration diagram in which parts related to the movement of the mobile station 6 are extracted from FIG.
- Multicast participation messages 61 and 62 are multicast participation messages when the mobile station is in the position of C.
- P message zone move notification message 63 is a message notifying that the MBS zone has changed
- zone move response Message 64 shows a response message to zone move notification message 63.
- the mobile station 6 when the mobile station 6 moves to the position B, it receives the broadcast information 32 from BS5-2, and assigns the corresponding MBS zone identifier for each MBS type of the participating multicast group. get.
- the mobile station 6 stores the MBS identifier for each MBS type, and updates the MBS identifier each time the MBS zone identifier is acquired.
- the broadcast information 32 includes Z12 as a communication-type MBS zone identifier and Z22 as a broadcast-type MBS zone identifier. Both MBS types are the same as the stored MBS identifier. It can be determined that the MBS zone has not changed from the position of A.
- the broadcast information 33 includes Z13 as a communication type MBS zone identifier and Z22 as a broadcast type MBS zone identifier. Therefore, when the mobile station 6 participates in the broadcast type multicast group G3, the mobile station 6 determines that the MBS zone has not changed because the position of B and the broadcast type MB S zone identifier are the same. No special processing is performed. On the other hand, when the mobile station 6 joins the communication type multicast group G2, the mobile station 6 determines that the communication type MBS zone has changed because the communication type MBS zone identifier is different from the position B. The following zone movement process is performed.
- FIG. 10 shows a flowchart of the operation (zone movement process) when the mobile station 6 moves across zones.
- FIG. 10 shows the operation when the mobile station 6 receives the service of the multicast 'group G2 and moves from the position B to the position C.
- the mobile station 6 designates G2 as a multicast 'group.
- BS5-3 forwards this message to GW4-2 as a multicast participation message 62 when moving (step S32).
- the multicast participation messages 61 and 62 at the time of movement include the devices (anchor devices) that controlled the processing of the previous multicast request (corresponding to steps S21, S22, and S23 in FIG. 6), BS5-1 and GW4— Contains information that is 1.
- GW4-2 has subordinate BS5-1 that has performed multicast participation request processing of mobile station 6 based on multicast participation message 62 at the time of movement acquired in step S32.
- the mobile station 6 transmits a zone move notification message 63 for notifying that the mobile station 6 has moved in the MBS zone (step S33).
- GW4-1 upon receiving the zone movement notification message 63, GW4-1 sends a zone movement response message 64 to GW4-2 (step S34).
- the information (registration information) necessary to participate in multicast 'group G2 of mobile station 6 such as the multicast' group G2 MBS type is communication type MBS ' Included in the response message 64.
- GW4-2 adds mobile station 6 to the list of participating stations in multicast group G2 (step S35).
- GW4-2 sends route change message 53 to multicast' router 3-1 'on the upstream side, and multicast' group G2 Request delivery.
- a data path is established between BS5-3 and BS5-4 that constitute the communication type MBS zone 13 (step S39).
- GW4-1 deletes the mobile station 6 from the list of participating stations in the multicast 'group G2 (step S36).
- GW4-1 checks whether there is a participating station for multicast group G2 in communication MBS zone 12. In the case of Fig. 10, since only the gateway device involved in the communication type MBS zone 12 is itself, it is only necessary to check its own participating station list. When multiple gateway devices are involved, Confirm all stations in communication MBS zone 1 2 by means such as exchanging messages. If there is no participating station for multicast group G2 in communication MBS zone 12, GW4-1 sends a route change message 53 to multicast router 3-1 on the upstream side (step S40). ), Notification of deletion of participation for multicast group address G2.
- step S41 the data path between BS5-1 and BS5-2 configuring the communication MBS zone 12 is deleted (step S41).
- GW4-1 sends a distribution tree change message to the related gateway device, and deletes participation for the multicast group address G2. Instruct to make a notification.
- GW4-1 responds to the participant's proxy in response to the participant's inquiry. In this way, by making a proxy response, GW4-1 can respond to the multicast 'Router 3-1 Query' message, reducing the load on the mobile station and effectively using frequency resources.
- a network based on IP multicast technology is assumed.
- messages conforming to PIM protocol, IGMP, MLD protocol, etc. are used.
- the multicast translator 3-1 compliant with the IGMP and MLD protocols transmits a query 1 'message 54 in order to search for a multicast participating station (step S 51).
- GW4-1 has a participating station list for each multicast group, and manages the presence or absence of participating mobile stations. Accordingly, the GW 4-1 that has received the query message 54 refers to the participating station list (step S 52), and transmits a report message 55 based on the presence / absence of the participating station (step S 53).
- MBS there are two types of MBS types, communication type MBS and broadcast type MBS, and the MBS zone has two types corresponding to each. Furthermore, the MBS zone according to the characteristics of the content An MBS zone with a different range may be provided, and three or more types of MBS zones may be provided. In this case, the number of types increases, but the operation performed for each type is the same as in this embodiment.
- MBS content is classified into a communication type and a broadcast type MBS type, and is used depending on the content. Therefore, it is possible to provide appropriate usability and to effectively use frequency resources.
- multiple MBS zone arrangements corresponding to MBS types are provided, services using MBS zones with a wide range and MBS zones with a limited range can be provided simultaneously.
- the gateway device holds the MBS zone configuration information! /, The intra-zone gateway device can perform processing in a coordinated manner, and the load on the MBS control device can be reduced.
- the gateway device manages the participating station list of the multicast group, it is possible to appropriately determine the necessity of changing the distribution tree.
- the registration information before the movement is transferred between the gateway devices 4 1 and 4 2 without going through the MBS control device 2. I forwarded it. Therefore, the load on the MBS control device 2 can be reduced, the processing time can be reduced, and the service can be continuously provided to the mobile station 6.
- the communication device and the communication method according to the present invention are useful for a wireless communication system that provides an MBS, and in particular, simultaneously provide an MBS zone size service. Suitable for wireless communication systems.
Abstract
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US12/514,462 US20100054167A1 (en) | 2006-12-14 | 2007-12-13 | Communication method and wireless communication system |
EP07850543.5A EP2093902A4 (en) | 2006-12-14 | 2007-12-13 | COMMUNICATION METHOD AND RADIO COMMUNICATION SYSTEM |
JP2008549355A JP4712095B2 (ja) | 2006-12-14 | 2007-12-13 | 通信方法および無線通信システム |
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Cited By (5)
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WO2010093196A2 (en) * | 2009-02-13 | 2010-08-19 | Samsung Electronics Co., Ltd. | Intelligent assisted transmission method for multicast broadcast service |
JP5136646B2 (ja) * | 2008-09-04 | 2013-02-06 | 富士通株式会社 | 通信制御方法、無線装置、基地局 |
JP2014158172A (ja) * | 2013-02-15 | 2014-08-28 | Japan Radio Co Ltd | マルチキャスト通信方法 |
JP2014158171A (ja) * | 2013-02-15 | 2014-08-28 | Japan Radio Co Ltd | マルチキャスト通信方法 |
JP2015065701A (ja) * | 2010-08-05 | 2015-04-09 | 日本電気株式会社 | マシンタイプ通信におけるグループセキュリティ |
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US20100157870A1 (en) * | 2008-12-19 | 2010-06-24 | Qualcomm Incorporated | Managing a multicast group membership table at an access network within a wireless communications system |
WO2013005935A2 (ko) * | 2011-07-07 | 2013-01-10 | 한국전자통신연구원 | 이동통신에서 모바일 iptv 서비스 지역의 동적 구성을 위한 기지국 선택 방법과 그를 위한, 시스템, 장치 및 컴퓨터로 읽을 수 있는 기록매체 |
KR101830616B1 (ko) * | 2011-07-07 | 2018-02-21 | 한국전자통신연구원 | 이동통신에서 모바일 iptv 서비스 지역의 동적 구성을 위한 기지국 선택 방법과 그를 위한, 시스템, 장치 및 컴퓨터로 읽을 수 있는 기록매체 |
WO2014073866A1 (ko) * | 2012-11-06 | 2014-05-15 | 엘지전자 주식회사 | 무선 통신 시스템에서 접근 제어 방법 및 이를 지원하는 장치 |
US11411760B2 (en) * | 2020-08-13 | 2022-08-09 | Skylo Technologies, Inc. | Configuring multicast communication |
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- 2007-12-13 US US12/514,462 patent/US20100054167A1/en not_active Abandoned
- 2007-12-13 KR KR20097012256A patent/KR20090080127A/ko active IP Right Grant
- 2007-12-13 WO PCT/JP2007/074023 patent/WO2008072691A1/ja active Application Filing
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5136646B2 (ja) * | 2008-09-04 | 2013-02-06 | 富士通株式会社 | 通信制御方法、無線装置、基地局 |
WO2010093196A2 (en) * | 2009-02-13 | 2010-08-19 | Samsung Electronics Co., Ltd. | Intelligent assisted transmission method for multicast broadcast service |
WO2010093196A3 (en) * | 2009-02-13 | 2010-11-18 | Samsung Electronics Co., Ltd. | Intelligent assisted transmission method for multicast broadcast service |
US8654697B2 (en) | 2009-02-13 | 2014-02-18 | Samsung Electronics Co., Ltd. | Intelligent assisted transmission method for multicast broadcast service |
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JP2014158172A (ja) * | 2013-02-15 | 2014-08-28 | Japan Radio Co Ltd | マルチキャスト通信方法 |
JP2014158171A (ja) * | 2013-02-15 | 2014-08-28 | Japan Radio Co Ltd | マルチキャスト通信方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008072691A1 (ja) | 2010-04-02 |
US20100054167A1 (en) | 2010-03-04 |
EP2093902A1 (en) | 2009-08-26 |
KR20090080127A (ko) | 2009-07-23 |
EP2093902A4 (en) | 2013-10-09 |
JP4712095B2 (ja) | 2011-06-29 |
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