CN102821362A - Method and system for controlling multicast broadcast service - Google Patents
Method and system for controlling multicast broadcast service Download PDFInfo
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- CN102821362A CN102821362A CN2012102390953A CN201210239095A CN102821362A CN 102821362 A CN102821362 A CN 102821362A CN 2012102390953 A CN2012102390953 A CN 2012102390953A CN 201210239095 A CN201210239095 A CN 201210239095A CN 102821362 A CN102821362 A CN 102821362A
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Abstract
The invention relates to the field of wireless communication, and discloses a method and a system for controlling multicast broadcast service, and therefore, a base station can send the control information of MBS (mobile base system) service accurately, wherein the base station transmits the MBS control information to a terminal through a broadcast channel, a multicast channel, a transport channel or the channel of an MBS multicast group. The MBS control information can be service control information change instructions, service notices, MBS service conversation start/ending identifications, PTP (point to point) and PTM (point to multipoint) mode conversion instructions, statistical instructions and the like.
Description
Technical field
The present invention relates to wireless communication field, particularly the technology of the multicast and broadcast in the WiMAX system.
Background technology
Along with the growth of development of Communication Technique and user's request, data service has obtained developing rapidly, and increasing rapidly of data business volume makes people surging to the demand order benefit of communication bandwidth, and broadband access shows a huge market to industrial circle.For breaking through the bandwidth bottleneck of Access Network, people have released multiple broadband access technology.
IEEE802.16 is (the Institute of Electrical and Electronics Engineers of Institute of Electrical and Electronics Engineers; Be called for short " IEEE ") in promulgation in December calendar year 2001, be used for the standard that provides last kilometer WiMAX to insert at metropolitan area network.The IEEE802.16 standard mainly comprises 802.16a, 802.16RevD and three standards of 802.16e.
Micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access; Be called for short " WiMAX ") be that present industry is to the wireless MAN access technology based on IEEE 802.16 series standards; Its elementary object provides a kind of under some multivendor environment to multiple spot of metropolitan area network, effectively the broadband wireless access means of interoperability.
Specifically, 802.16 series standards have been stipulated the air interface part protocol layer of WiMAX system, mainly comprise physical layer (PHY), and medium access control (Medium Access Control is called for short " MAC ") layer.Wherein, the PHY layer is physically accomplished operations such as the modulation of signal and encoding and decoding, and the MAC layer is mainly accomplished the medium access control function of WiMAX system.
Fig. 1 illustrates the end-to-end reference model of WiMAX.Wherein the R1 interface is a wireless air interface, is mainly defined by IEEE802.16d/e.All the other interfaces are wireline interface.
As scheme visible; WiMAX mainly comprises travelling carriage (Mobile Station; Be called for short " MS ")/subscriber station (Subscribe Station; Abbreviation " SS "), access service network (Access Service Network is called for short " ASN ") and connectivity serving network (Connectivity Service Network is called for short " CSN ").
Wherein, ASN is defined as the network function set that the wireless access service is provided for the WiMAX user terminal, and ASN has comprised BS and ASN gateway (ASN GateWay is called for short " ASN-GW ") network element, and an ASN possibly shared by a plurality of CSN.
The major function of ASN comprises the function of BS and the function of ASN-GW.Wherein, the function of BS has: provide that BS is connected with the L2 of subscriber station SS/MS, the compression and the encryption of RRM, measurement and the power control and the data of eating dishes without rice or wine.The function of ASN-GW has: for SS/MS checking, mandate and billing function provide agency (proxy) function; Support the network of NSP to find and selection; For SS provides relaying (Relay) function of L3 information, like IP address assignment, RRM.
In addition, can also comprise (non-essential function): the ASN intra; SS paging and location management are like paging controller (Paging Controller is called for short " PC ") functional entity; Tunnel management between the ASN-CSN is equivalent to the external agent (FA) in the mobile IP technology; The vision location registration, anchor SFA functional entity.
CSN is defined as to the WiMAX user terminal IP is provided Connection Service.CSN mainly provides the IP address assignment of following function: SS/MS; Internet inserts, checking, mandate, charging protocol (Authentication, Authorization, Account are called for short " AAA ") agency (proxy) or service (server); Authorization control based on the user; ASN is to the tunnel of CSN, WiMAX user's charging and the clearing between the operator, the tunnel under the roaming condition between the CSN; Switching between the ASN and various WiMAX service (like location-based business, multi-medium multi-packet broadcasting and broadcasting service, IP Multimedia System business).
MS/SS is (moving) terminal, and the user uses this terminal to insert the WiMAX network.
More than WiMAX and network architecture thereof are illustrated, down carry out brief account in the face of Multimedia Broadcast Multicast Service (Multicast&Broadcast Service is called for short " MBS ").
The usually said communication of people is the communication between a node and another one node; But increase along with user's request; And the introducing of multiple medium; The user need carry out the communication of one-to-many or multi-to-multi, puts the multiple spot transmission mode of (Point to Multipoint is called for short " PTM ") thereby produced.In order on mobile network, to support these patterns to realize the one-to-many multicast broadcasting service, in order to effectively utilize mobile network resource, prior art has defined MBS on the basis of WiMAX professional simultaneously.The MBS business is in the mobile network, to provide a data source to send the point-to-multipoint service of data to a plurality of users, realizes that Internet resources are shared, improves utilization rate of network resource, the interface resource of especially eating dishes without rice or wine.The MBS of WiMAX definition can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize multicast and broadcasting that high-speed multimedia is professional, and this has complied with following mobile data Development Trend undoubtedly.
Two kinds of access modules of MBS business support based on the WiMAX network: single base station is inserted and many base stations are inserted.Under the access module of many base stations, defined the notion of MBS territory (be MBS Zone, identify) with MBS ZoneID; Security Association (MBS Group SecurityAssociation, abbreviation " MBS GSA ") is organized with identical Multicast CID and MBS in all base stations in so-called set that the MBS territory is exactly a base station, MBS territory; Send the content of same MBS Business Stream; The terminal of having registered the MBS service can be through a plurality of base stations reception MBS business datums in this MBS territory, and the terminal that is in Idle state need not rebuild connection when moving in interior span base station, MBS territory; Can be impregnable reception MBS professional, realize the seamless switching that MBS is professional.It is a kind of special case that MBS are inserted in many base stations that MBS is inserted in single base station, and MBS territory scope is defined as in the base station range, and all users of this MBS of reception use same multicast connection identifiers in MBS territory.Prior art does not have detailed description to single base station mode; But under many base station modes, how the base station sends the MBS data, and how the terminal receives the MBS data, and how the base station to notify the transmission of the interested MBS data in terminal, and corresponding description is all arranged.
That eats dishes without rice or wine in the existing system mainly is described below:
At first, broadcasting connects expression (broadcasting CID) goes up the DL-MAP of broadcasting and comprises zero to one or more MBS-MAP-IE, MBS-MAP-IE last each with MBS territory ID as sign;
The second, one MBS-MAP-IE sign eats dishes without rice or wine to go up the physical resource of a MBS-MAP message of broadcasting; If single base station mode is then directly indicated the professional physical resource of MBS;
The three, one MBS-MAP message can comprise zero to one or more MBS-DATA-IE or the MBS-DATA-IE of expansion, the physical parameter between these MBS-DATA-IE can unanimity also can be inconsistent, determine by network side; But a MBS-DATA-IE only has only a physical parameter collection;
Comprise one or more multicasts CID among the four, one MBS-DATA-IE; Why requiring a MBS-DATA-IE to comprise one to a plurality of multicast CID, is that pairing multicast CID indicates in a MBS-DATA-IE the MBS data of identical DIUC from the consideration that reduces the MBS-MAP message-length.On transfer of data; Be exactly the identical Medium Access Control (MAC) Protocol Data Unit of DIUC (Protocol Data Units; Abbreviation " PDU ") all is placed on a physical resource Burst (burst) and goes up transmission; Though the data of different MBS services have mixed in Burst, can on the MAC layer, distinguish through the multicast CID on the MAC-PDU head.Not every multicast CID is professional corresponding to same MBS, but each multicast CID is corresponding to a MBS business.
Among the five, one the expansion MBS-DATA-IE, a multicast CID also comprises one or more logic channels ID.Use during logic channel ID eats dishes without rice or wine, be used for informing whether the MBS data of the current indication in terminal have its interested content;
In addition, DCD is last can carry zero to one or more MBS territory ID.According to the regulation of agreement 802.16e to content identification Content ID: this group information of Content ID and multicast CID and logic channel ID is corresponding one by one.Content ID is used for identifying upper layer data stream that WiMAX Access Network service flow (SF) carries.
DL-MAP message indicates the physical resource that next MBS-MAP message is sent, but does not distinguish multicast CID and the logic channel ID that comprises in the MBS-MAP message; Indication to next MBS-MAP message physical resource is also arranged among the MBS-DATA-IE; Be different with the indication among the DL-MAP; The MBS-MAP message here is a special MBS-MAP message, wherein necessarily comprises a MBS-DATA-IE and has multicast CID and the logic channel ID consistent with current MBS-DATA-IE.Like this, the terminal just need not to receive one by one DL-MAP message, only need just can know the delivery time of the next MBS-MAP message of being concerned about from current MBS-MAP-IE.
In addition, also have one among the MBS-DATA-IE and change indication,, just directly receive the MBS data if do not change; Otherwise need to resolve new MBS-DATA-IE, with the relevant MBS information of new terminal more.
More than be the main description of existing protocol, yet also how do not transmit the professional control information of MBS or the specific descriptions of MBS service control method in the existing protocol eating dishes without rice or wine in the MBS system.
Summary of the invention
The technical problem that the embodiment of the invention will solve is to provide a kind of control method and system thereof of Multimedia Broadcast Multicast Service, makes the base station can correctly send the professional control information of MBS.
For realizing above-mentioned technical problem, the embodiment of the invention provides a kind of control method of Multimedia Broadcast Multicast Service, comprises following steps:
The base station is transferred to the terminal through channel appointed with Multimedia Broadcast Multicast Service MBS control information;
Said terminal is professional according to the corresponding MBS of the control information operation that receives.
Wherein, said channel appointed is a broadcast channel;
Said base station is distributed a MAC layer type of message that is used to transmit the MBS control information at least, and the type of message that passes through to be distributed transmits said MBS control information at the broadcast channel of correspondence;
Said terminal is through monitoring said broadcast channel, and the said type of message of identification receives the MBS control information from the base station.
In this external said method, said channel appointed is a Multicast Channel;
Said MBS control information is transmitted through the Multicast Channel of appointment in said base station;
Said terminal obtains said MBS control information through monitoring said Multicast Channel.
In this external said method, said channel appointed is a transfer channel;
Said MBS control information is transmitted through the transfer channel of appointment in said base station;
Said terminal obtains said MBS control information through monitoring said transfer channel.
In this external said method, said channel appointed is the channel of MBS multi-broadcast group;
Said base station is through the Channel Transmission MBS control information relevant with this multi-broadcast group of MBS multi-broadcast group;
The terminal that adds said multi-broadcast group receives said MBS control information through the channel of this multi-broadcast group.
In this external said method, add the sub-head of expansion at the media access control protocol data unit that is used for transport service of the channel of MBS multi-broadcast group, through the MBS control information of said this multi-broadcast group of expansion head transmission.
In this external said method, said MBS control information is that business control information changes indication;
Said terminal changes indication through said business control information and judges whether the MBS business of at least one appointment changes.
In this external said method, said MBS control information is a service announcement;
Said terminal obtains one of MBS service identification, professional transmitting time, content identification, professional associated description information or its combination in any through said service announcement.
In this external said method, said MBS control information is that the MBS service conversation begins/finish sign;
It is professional that said terminal begins/stop to receive corresponding MBS according to said sign.
In this external said method, said MBS control information is point-to-point and the mode switch indication of putting multiple spot;
Said terminal is changed the professional bearing mode of corresponding MBS according to the indication of this mode switch indication through indicated point-to-point/point to multipoint mode, and it is professional in new carrying, to receive corresponding MBS.
In this external said method, said control information is the statistics indication;
Said terminal responds said base station according to said statistics indication information, supports the statistics of said base station to MBS service-user number.
In this external said method, this control information corresponding MBS service identification and/or this control information length are also transmitted in said base station in the said MBS control information of transmission.
In this external said method; Need send business control information in said base station and change indication; And service announcement, session are when beginning/finishing sign, point-to-point and putting the mode switch indication of multiple spot, in the statistics indication at least one; Said base station is at first sent said business control information and is changed indication, the control information of sending other afterwards;
Said terminal changes indication according to said business control information and confirms whether corresponding MBS service condition changes, if change, then continues to receive control information thereafter, if do not change, then no longer receives remaining control information.
In this external said method, said business control information changes whether the corresponding one or more MBS business control informations of each bit indication change in the indication.
In this external said method,, confirm that the professional and said business control information of said MBS changes the corresponding relation of each bit in the indication through said MBS service identification and business control information are changed the total bit number delivery of indication.
In this external said method, said control information is sent according to the corresponding transmission cycle of control information in said base station, changes said control information according to the period of change of correspondence;
When control information changed, said base station changed said control information when a nearest period of change begins;
Said terminal receives said control information according to said transmission cycle or period of change;
Said period of change is greater than the said transmission cycle.
The present invention also provides a kind of control system of Multimedia Broadcast Multicast Service, comprises base station and terminal, and said base station also comprises transmitting element, is used for through channel appointed Multimedia Broadcast Multicast Service MBS control information being sent to the terminal;
Said terminal also comprises processing unit, is used for the corresponding MBS business of control information operation of sending according to the base station.
Wherein, said channel appointed is one of following:
The channel of the broadcast channel of appointment, Multicast Channel, transfer channel and/or MBS multi-broadcast group.
In this external said system, said control information comprises one of following or its combination in any:
Business control information variation indication, service announcement, MBS service conversation begin/finish sign, point-to-point and put the mode switch indication of multiple spot, statistics indication.
Through relatively finding; The main distinction of technical scheme of the present invention and prior art is; The base station is transferred to the terminal through channel appointed with the MBS control information, makes the terminal can correctly receive control information corresponding from the base station, and professional according to the corresponding MBS of the control information operation that receives; Guarantee that efficiently control and management MBS is professional, help the professional enforcement of MBS and carry out.
Channel appointed can be a broadcast channel; Through distributing one or more MAC layer type of message that are used to transmit the MBS control information, make the base station to adopt the type of message that is distributed in the broadcast channel correct transmission MBS of correspondence control information; Corresponding, the terminal can be passed through to monitor broadcast channel, and the identification type of message, conveniently with the MBS control information that receives exactly from the base station.
Channel appointed also can be Multicast Channel or transfer channel; The base station can specify a Multicast Channel or transfer channel to be specifically designed to transmission MBS control information separately; Make all terminals all can obtain its interested MBS control information through monitoring this channel.
Channel appointed can also be the channel of MBS multi-broadcast group; The base station is through the sub-head of newly-increased expansion among the MAC PDU of transport service in the channel of MBS multi-broadcast group; Transmit the MBS control information relevant with this multi-broadcast group; Because this method need not independent channel of specific appointment; Only, saved limited Internet resources through the existing channel control information transmission, very suitable when channel resource is not enough.And, very strong through the specific aim of this method control information transmission, have only the terminal that adds multi-broadcast group normally to receive required MBS control information from the channel of this multi-broadcast group.
Control information can be that business control information changes indication; According to this indication, the terminal can receive other control information corresponding when the MBS service condition changes; When the MBS business does not change; No longer receive other control information, reduced the operation at terminal, reduced the load at terminal.
Control information can be a service announcement; The terminal can obtain MBS service identification, professional transmitting time, content identification, reach professional associated description information etc. according to this service announcement; Make the terminal of just going into this base station can know the MBS business information in this base station, professional so that the terminal can add and receive its interested MBS.
Control information can be that the MBS service conversation begins/finish sign, and the base station to the professional reception of this MBS with stop, being realized the management that MBS is professional through this information synchronization control terminal better.
Control information can be point-to-point (Point to Point; Be called for short " PTP ") and put multiple spot (Point to Multipoint; Abbreviation " PTM ") mode switch indication, the base station is when the bearing mode of needs change MBS business, and PTP or the PTM pattern that can in time notify the terminal to adopt correspondence receive the MBS business; Guarantee that professional reception is unimpeded, improve the quality of reception.
Control information can be the statistics indication; The base station can be through this statistics indication; The terminal of triggering Idle state (generally is to do a position to upgrade to base station feedback; Possibly not carry the content of any relevant MBS business information, the base station is through obtaining its MBS business information that is receiving from the Anchor PC of MS in the position updating process), make the base station correctly to add up the number of users of specifying MBS professional according to the MBS business information at terminal.
The base station sent control information according to the transmission cycle; Change control information according to period of change; And period of change make the terminal that just gets into base station range in time to obtain required control information according to the transmission cycle, and other terminal can be upgraded the content of control information according to period of change greater than the transmission cycle; Reduce the receive frequency at terminal, reduced the burden at terminal.
Description of drawings
Fig. 1 is the schematic network structure of WiMAX in the prior art;
Fig. 2 is the MBS service control method flow chart according to first embodiment of the invention;
Fig. 3 sends the form sketch map according to control information in the MBS service control method of first embodiment of the invention;
Fig. 4 is the MBS service control system structure chart according to third embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
In the present invention; The base station is through the channel of broadcast channel, Multicast Channel, transfer channel or the multi-broadcast group of IEEE802.16e definition; Control information transmission; Comprise that business control information variation indication, service announcement, MBS service conversation begin/finish the mode switch indication of sign, PTP and PTM, statistics indication, operate its MBS business according to the control information that receives at the terminal.
Describe in the face of first embodiment of the invention down, first embodiment of the invention relates to the professional control method of MBS, and is specifically as shown in Figure 2.
In step 201, the base station is provided with corresponding MBS control information according to the professional needs of each MBS, and the channel that defines through IEEE802.16e sends to the terminal with these MBS control informations.
Wherein, the channel that is used for control information transmission can be broadcast channel, Multicast Channel or the transfer channel of IEEE802.16e definition.If through broadcast channel transmission (like CID=0xFFFF), then the MAC layer type of message that at least one is specifically designed to transmission MBS control information need be distributed in the base station, and the type of message that passes through to be distributed is in the broadcast channel transmission MBS of correspondence control information; Perhaps the base station can be through the Multicast Channel or the transfer channel transmission of IEEE802.16e definition, directly at high-rise control information transmission.
The control information of being sent comprises that the MBS business control information changes indication, and service announcement, session begin/finish sign, PTP and PTM the mode switch indication, add up at least one in indicating.
Business control information changes indication: indicating professional all the other four control informations of certain MBS whether variation has taken place, be that then indicating terminal reads again and upgrades control information corresponding, otherwise the terminal does not need to read the MBS control information again.
Service announcement (Service Announce) information: comprise time, content identification and relevant information such as description that MBS service identification, business begin to send.
The mode switch indication of PTM and PTP: the indication base station is current professional through PTP or PTM mode carrying MBS, when the base station adopts PTM to carry, should carry by sign indication PTM, and when the base station adopted PTP to carry, this sign indication PTP carried.Carried when converting PTP into and carrying by indication PTM in this sign, indicating terminal withdraws from the PTM pattern, sets up PTP and connects that to receive this MBS professional, and vice versa.
Session begins/finish (Session start/stop) sign: when session begins or finish, give user's indication information, the indication user begins to receive the MBS business or stops to receive this MBS professional.Carry out in the process in the MBS business, this information is indicated beginning (start) always; Behind conversation end, indication always finishes (stop).
Statistics (Counting) indication information: the indication network side need be added up the number of users or the professional number of users of all reception MBS that receive certain MBS business under the idle pulley now.The terminal is after receiving this indication, by regulation to network-feedback or prepare to receive the professional information of this MBS.Can also comprise a probability threshold in this information, be used for MS after receiving this indication, initiate feedback by certain probability.
The corresponding MBS service identification of this control information and this control information length are transmitted in the base station in control information transmission, as shown in Figure 3.Wherein, the control information of being transmitted can adopt the mode of TLV (that is the value of the length of Type type of data, Length data, Value data) to organize.In each control information, the base station is at first sent business control information and is changed indication, and whether the terminal changes according to definite its interested MBS business of this indication, if do not change then can no longer receive control information thereafter.Business control information changes indication can comprise a plurality of bits, and wherein whether MBS business control information of each bit identification changes, and comprises 8 bits if this business control information changes indication, then can identify 8 MBS business at most.Each MBS business is mapped on certain bit through algorithm; Such as; Can the value of MBS service identification mod8 (business control information changes total bit number of indication) be mapped on the corresponding bit; At the MBS service identification is 17 o'clock, and the professional corresponding business control information of this MBS changes the 1st bit (bit is since 0 counting) of indication.When variation is sent in the professional control information of this MBS, with the 1st bit set (putting 1), otherwise reset this bit (putting 0).Can indicate a plurality of MBS professional because a business control information changes to indicate, therefore when transmission should be indicated, can transmit corresponding a plurality of MBS service identifications thereafter continuously.
Then get into step 202, if the channel that terminal monitoring is corresponding is interested in the MBS business; Then the terminal at first receives and comprises the professional business control information variation indication of this MBS, judges according to bit corresponding in the indication whether its interested MBS business changes, if corresponding bit set; Represent that then this MBS business changes, get into step 203, otherwise represent that then this MBS business does not change; The terminal no longer receives control information thereafter, directly process ends.If the terminal has just moved to this base station range, receive business control information first, do not judge that then this business control information changes indication, directly gets into step 203.
In this step; If the base station is through the broadcast channel control information transmission; Then the terminal can judge whether not reception but the professional business control information variation indication of the professional or current MBS that is receiving of interested MBS, if having then reception in time through monitoring the message of broadcast channel specify message type (be and transmit the type of message that the MBS control information distributes); If do not have or these MBS business are all lost interest in or on ability, do not supported, then ignore these message.
If the base station is through Multicast Channel or transfer channel control information transmission; Then the terminal is through monitoring this Multicast Channel or transfer channel; Directly judge whether not reception but the professional business control information variation indication of interested MBS business or the current MBS that is receiving, equally, if having then reception in time; If do not have or these MBS business are all lost interest in or on ability, do not supported, then ignore received indication.
In step 203; Corresponding channel is continued to monitor in the terminal; According to the MBS service identification after the control information; Receive the professional control information of its interested MBS (more than can receiving in the said several kinds of control informations one or more), and get into step 204 in 207 or multinomial according to the control information of receiving.
If the terminal receives the MBS service announcement; And current this MBS of reception that needs is professional at this terminal; Then get into step 204, add this MBS business according to the MBS service identification in this service announcement, professional beginning transmitting time, content identification, professional associated description information.
Begin/finish sign if the terminal receives session, then get into step 205, the terminal receives or stops to receive the MBS business of correspondence according to the indication of this sign.Through this sign; The terminal use will be without the data that whether have it to receive in the continuous detecting MBS-MAP message; Change indication and only need inspect business control information,, then further detect session and begin/finish sign if indication changes; Receive accordingly or stop to receive, help the terminal and reduce power loss.
If the terminal receives PTP and the indication of PTM mode switch, then get into step 206, the terminal is according to this mode switch indication, and it is professional that the PTP/PTM pattern of passing through to be identified receives corresponding MBS.If this sign converts PTM into by PTP and carries; Then the terminal receives corresponding MBS business according to indication through the PTM pattern; If this indication converts PTP into by PTM and carries; It is professional then can directly to carry the MBS that receives correspondence according to indication through PTP for the activated state terminal, and for the process that the Idle state terminal need initiate to exit from idle mode, the connection of setting up PTP receives the MBS business.
If the terminal receives statistics indication, and this terminal is the Idle state terminal, then gets into step 207, and the MBS business information of current reception is fed back to network side in the Idle state terminal, supports the base station statistics to receive the number of users of specifying MBS professional.
What deserves to be mentioned is; Because business control information is not often to change, generally speaking variation is all unhappy, so these information there is no need in each radio frames, all to send; In this execution mode, adopt the different cycles to send to Different control information.Except the transmission cycle, also defined period of change in this execution mode, control information is reseted according to the period of change of correspondence in the base station.That is to say that when control information changed, this control information was reseted in the base station in a nearest period of change, and the control information after beginning to send this and reset from a nearest transmission cycle.Wherein, period of change is greater than the transmission cycle.If the terminal just gets into base station range, need obtain the professional control information of corresponding MBS, then can be according to sending the cycle receiving control information; If the terminal just hopes when the MBS business changes, in time to upgrade, then can be according to the period of change receiving control information.Thereby when guaranteeing that the terminal correctly receives the MBS business, reduced the receive frequency at terminal, reduced the burden at terminal.According to the change frequency of control information, period of change can be the several times in transmission cycle.
Second embodiment of the invention relates to the professional control method of MBS equally; Similar with first execution mode, its difference is, in the first embodiment; The base station is through channel appointed, like broadcast channel, Multicast Channel or the professional control information of all MBS of transfer channel transmission of appointment; And in this execution mode, the base station is through the Channel Transmission MBS control information relevant with this multi-broadcast group of multi-broadcast group.Expansion son head (Extended Subheader) is added in the base station in the MAC of transport service PDU, through the MBS control information of this this multi-broadcast group of expansion head transmission.Specifically, in the prior art, IEEE802.16e has defined the sub-head of a plurality of expansions, is used for the transmission channel control information.In this execution mode, can increase a descending expansion son head (like ES Type=7) newly, be used to transmit the MBS control information of relevant this multi-broadcast group.Through this method, have only the terminal that adds this multi-broadcast group from MAC PDU, to receive control information corresponding through the multi-broadcast group channel of correspondence.In this execution mode, the control information that send the base station does not comprise that business control information changes indication and service announcement, includes only mode switch indication and statistics indication that the MBS service conversation begins/finish sign, PTP and PTM.The operation of being carried out after when above three kinds of control informations are received at the terminal is identical with step 205, step 206 and the step 207 in first execution mode, repeats no more at this.
Third embodiment of the invention relates to the MBS service control system, and is as shown in Figure 4, comprises base station and terminal, and wherein, the base station also comprises transmitting element, is used for through the channel of IEEE802.16e definition Multimedia Broadcast Multicast Service MBS control information being sent to the terminal; The terminal also comprises processing unit, is used for the corresponding MBS business of control information operation of sending according to the base station.The base station is through successfully issuing control information, and indicating terminal is professional according to the corresponding MBS of control information operation, guarantees that control and management MBS is professional efficiently, helps the professional enforcement of MBS and carries out.One of the channel of the broadcast channel of the appointment that wherein, transmitting element can be through IEEE802.16e definition, Multicast Channel, transfer channel, MBS multi-broadcast group control information transmission.
The control information of being transmitted comprises one of following or its combination in any: business control information changes mode switch indication that indication, service announcement, MBS service conversation begin/finishes sign, PTP and PTM, adds up and indicate.
The processing unit at terminal is when receiving the MBS service announcement; If current this MBS of reception that needs is professional at this terminal, then add this MBS business according to the MBS service identification in this service announcement, professional beginning transmitting time, content identification, professional associated description information.
The processing unit at terminal receives or to stop to receive corresponding MBS professional according to the indication of this sign when receiving session and begin/finish sign.Through this sign; The terminal use will be without the data that whether have it to receive in the continuous detecting MBS-MAP message; Change indication and only need inspect business control information,, then further detect session and begin/finish sign if indication changes; Receive accordingly or stop to receive, help the terminal and reduce power loss.
The processing unit at terminal is when receiving the indication of PTP and PTM mode switch, and according to the indication of this mode switch indication, it is professional to receive corresponding MBS through indicated PTP/PTM pattern.If this sign converts PTM into by PTP and carries; Then processing unit receives corresponding MBS business according to indication through the PTM pattern; If this sign converts PTP into by PTM and carries, it is professional then can directly to carry the corresponding MBS of reception according to indication through PTP for the activated state terminal, for the Idle state terminal; The process that its processing unit need initiate to exit from idle mode, the connection of setting up PTP receives the MBS business.
The processing unit at terminal if this terminal is the Idle state terminal, then feeds back the MBS business information of current reception to network side when receiving the statistics indication, support the base station statistics to receive the number of users of specifying MBS professional.
Though through reference some preferred implementation of the present invention; The present invention is illustrated and describes; But those of ordinary skill in the art should be understood that and can do various changes to it in form with on the details, and without departing from the spirit and scope of the present invention.
Claims (19)
1. the control method of a Multimedia Broadcast Multicast Service is characterized in that, comprises following steps:
The base station is transferred to the terminal through channel appointed with Multimedia Broadcast Multicast Service MBS control information;
Said terminal is professional according to the corresponding MBS of the control information operation that receives.
2. the control method of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, said channel appointed is a broadcast channel;
Said base station is distributed a MAC layer type of message that is used to transmit the MBS control information at least, and the type of message that passes through to be distributed transmits said MBS control information at the broadcast channel of correspondence;
Said terminal is through monitoring said broadcast channel, and the said type of message of identification receives the MBS control information from the base station.
3. the control method of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, said channel appointed is a Multicast Channel;
Said MBS control information is transmitted through the Multicast Channel of appointment in said base station;
Said terminal obtains said MBS control information through monitoring said Multicast Channel.
4. the control method of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, said channel appointed is a transfer channel;
Said MBS control information is transmitted through the transfer channel of appointment in said base station;
Said terminal obtains said MBS control information through monitoring said transfer channel.
5. the control method of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, said channel appointed is the channel of MBS multi-broadcast group;
Said base station is through the Channel Transmission MBS control information relevant with this multi-broadcast group of MBS multi-broadcast group;
The terminal that adds said multi-broadcast group receives said MBS control information through the channel of this multi-broadcast group.
6. the control method of Multimedia Broadcast Multicast Service according to claim 5; It is characterized in that; The media access control protocol data unit that is used for transport service at the channel of MBS multi-broadcast group adds the sub-head of expansion, through the MBS control information of said this multi-broadcast group of expansion head transmission.
7. according to the control method of each described Multimedia Broadcast Multicast Service in the claim 2 to 4, it is characterized in that said MBS control information is that business control information changes indication;
Said terminal changes indication through said business control information and judges whether the MBS business of at least one appointment changes.
8. according to the control method of each described Multimedia Broadcast Multicast Service in the claim 2 to 4, it is characterized in that said MBS control information is a service announcement;
Said terminal obtains one of MBS service identification, professional transmitting time, content identification, professional associated description information or its combination in any through said service announcement.
9. according to the control method of each described Multimedia Broadcast Multicast Service in the claim 2 to 6, it is characterized in that said MBS control information is that the MBS service conversation begins/finish sign;
It is professional that said terminal begins/stop to receive corresponding MBS according to said sign.
10. according to the control method of each described Multimedia Broadcast Multicast Service in the claim 2 to 6, it is characterized in that said MBS control information is point-to-point and the mode switch indication of putting multiple spot;
Said terminal is changed the professional bearing mode of corresponding MBS according to the indication of this mode switch indication through indicated point-to-point/point to multipoint mode, and it is professional in new carrying, to receive corresponding MBS.
11. the control method according to each described Multimedia Broadcast Multicast Service in the claim 2 to 6 is characterized in that, said control information is the statistics indication;
Said terminal responds said base station according to said statistics indication information, supports the statistics of said base station to MBS service-user number.
12. the control method of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, this control information corresponding MBS service identification and/or this control information length are also transmitted in said base station in the said MBS control information of transmission.
13. control method according to each described Multimedia Broadcast Multicast Service in the claim 2 to 4; It is characterized in that; Need send business control information in said base station and change indication; And service announcement, session be when beginning/finishing sign, point-to-point and putting the mode switch indication of multiple spot, in the statistics indication at least one, and said base station is at first sent said business control information and changed indication, the control information of sending other afterwards;
Said terminal changes indication according to said business control information and confirms whether corresponding MBS service condition changes, if change, then continues to receive control information thereafter, if do not change, then no longer receives remaining control information.
14. the control method of Multimedia Broadcast Multicast Service according to claim 13 is characterized in that, said business control information changes whether the corresponding one or more MBS business control informations of each bit indication change in the indication.
15. the control method of Multimedia Broadcast Multicast Service according to claim 14; It is characterized in that; Through said MBS service identification and business control information are changed the total bit number delivery of indication, confirm that the professional and said business control information of said MBS changes the corresponding relation of each bit in the indication.
16. the control method according to each described Multimedia Broadcast Multicast Service in the claim 1 to 6 is characterized in that, said control information is sent according to the corresponding transmission cycle of control information in said base station, changes said control information according to the period of change of correspondence;
When control information changed, said base station changed said control information when a nearest period of change begins;
Said terminal receives said control information according to said transmission cycle or period of change;
Said period of change is greater than the said transmission cycle.
17. the control system of a Multimedia Broadcast Multicast Service comprises base station and terminal, it is characterized in that, said base station also comprises transmitting element, is used for through channel appointed Multimedia Broadcast Multicast Service MBS control information being sent to the terminal;
Said terminal also comprises processing unit, is used for the corresponding MBS business of control information operation of sending according to the base station.
18. the control system of Multimedia Broadcast Multicast Service according to claim 17 is characterized in that, said channel appointed is one of following:
The channel of the broadcast channel of appointment, Multicast Channel, transfer channel and/or MBS multi-broadcast group.
19. the control system of Multimedia Broadcast Multicast Service according to claim 17 is characterized in that, said control information comprises one of following or its combination in any:
Business control information variation indication, service announcement, MBS service conversation begin/finish sign, point-to-point and put the mode switch indication of multiple spot, statistics indication.
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| CN2006101370590A CN101166174B (en) | 2006-10-17 | 2006-10-17 | Control method and system for multicast broadcast service |
| CN201210239095.3A CN102821362B (en) | 2006-10-17 | 2006-10-17 | The control method of Multimedia Broadcast Multicast Service and system thereof |
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