CN101166143A - Receiving method and system for multicast broadcast service - Google Patents

Receiving method and system for multicast broadcast service Download PDF

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Publication number
CN101166143A
CN101166143A CNA2006101370478A CN200610137047A CN101166143A CN 101166143 A CN101166143 A CN 101166143A CN A2006101370478 A CNA2006101370478 A CN A2006101370478A CN 200610137047 A CN200610137047 A CN 200610137047A CN 101166143 A CN101166143 A CN 101166143A
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mbs
packet
map
indication information
performance element
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CN101166143B (en
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冯成燕
林志斌
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • 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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Abstract

The disclosed method and system in use for receiving broadcast service of multicast realizes macro diversity of MBS, and enhances receptivity of MBS in communication system. In the invention, management unit of MBS sends parameters of physical layer needed to configure MBS mapping message MBS_MAP to all execution elements of MBS in a MBS domain. After configuring MBS_MAP, based on received parameters of physical layer, execution elements of MBS send the configured MBS_MAP to reception unit of MBS. Based on the MBS_MAP, reception unit of MBS receives MBS service. When the invention is applied to WiMAX network, the management unit of MBS is MBS proxy, the execution element of MBS is base station, and the reception unit of MBS is terminal.

Description

The method of reseptance of Multimedia Broadcast Multicast Service and system thereof
Technical field
The present invention relates to the communications field, particularly the multicast and broadcast technology.
Background technology
Nowadays, fast development along with the internet, people no longer are satisfied with phone and messaging service to the demand of mobile communication, a large amount of multimedia services emerge, the some of them applied business requires a plurality of users can receive identical data simultaneously, as video request program, television broadcasting, video conference, online education, interactive game etc.These mobile multi-media services are compared with general data, have characteristics such as data volume is big, longer duration, delay sensitive.In order to effectively utilize mobile network resource, and, produced multicast broadcast service (Multicast Broadcast Service is called for short " MBS ") better for the client provides service.
MBS is meant that wireless network eating dishes without rice or wine, and point-to-multipoint sends to a plurality of (being multicast) or all (i.e. broadcasting) terminal uses of the same information content.It can realize that Internet resources share, and improves utilization rate of network resource, especially can improve the utilance of interface-free resources, thereby high efficiency for the user provides at a high speed, stable multimedia service.
Based on micro-wave access to global intercommunication (Worldwide Interoperability for MicrowaveAccess, abbreviation " WiMAX ") technology is in the WiMAX network of IEEE802.16e agreement realization, MBS can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize the multicast and the broadcasting of high-speed multimedia business, this has complied with the development trend of following mobile data services undoubtedly.
MBS based on the WiMAX network supports two kinds of access modules: single base station is inserted and many base stations are inserted.Under the access module of many base stations, a MBS territory (MBS Zone, identify by MBS_zone ID) in all base stations with identical multicast connection identifier (CID (Multicast Connection ID, be called for short " MCID ") and MBS group Security Association (MBS Group Security Association, abbreviation " MBS GSA ") sends the content that same MBS flows, the terminal of having registered the MBS service can receive the MBS content by a plurality of base stations in the MBS territory, promptly terminal is supported grand diversity.And when the terminal that is in free time (Idle) pattern moves in interior span base station, MBS district, do not need rebuild to connect, can impregnable receptions MBS, the seamless switching of realization MBS.It is a kind of special case that MBS is inserted in many base stations that MBS is inserted in single base station, and MBS territory scope is defined as in the base station.
In the WiMAX network, IEEE802.16e agreement regulation traffic stream identifier (Service FlowIdentifier, abbreviation " SFID ") identifies an one-way traffic flow, all Business Streams are being eated dishes without rice or wine by medium access control (Medium Access Control, abbreviation " MAC ") connection of layer transmits, be that traffic stream identifier will be mapped on the connection identifier (Connection ID is called for short " CID ").Simultaneously, IEEE802.16e agreement regulation uses multicast connection identifier (Multicast CID is called for short " MCID ") to identify a multicast connection, uses multicast content sign (MBS Contents ID) to identify a multicast content.A MCID goes up the protocol Data Unit (Protocol Data Unit is called for short " PDU ") that transmits and comprises one or more MBS contents.When the link layer of eating dishes without rice or wine connects a plurality of content of carrying, use logical channel identifier (Logical Channel ID is called for short " LCID ") to label at link layer, be used for indicating current link layer message to carry which content.In a PDU, the unique corresponding content identification of LCID.
At present, in IEEE802.16, introduced MBS mapping (MBS-MAP) message, this message is transmitted in the MBS territory, is used for notifying the physical channel resources of distributing for concrete MCID at given MBS territory (MBS Zone), and the information element that it comprised is as shown in table 1.
Sign (Syntax) Figure place (Size) Note (Notes)
MBS-MAP_Message_Format(){
Management Message Type＝ 4 bits Management message type is 62
Frame number 4 bits Frame number: with frame number in the DL-MAP message low 4 identical
MBS_DIUC_Change_Count 8 bits
#MBS_DATA_IE 4 bits The number of the MBS_DATA_IE that comprises
for(i＝0；i＜n；i++){ n＝#MBS_DATA_IE
MBS_DATA_IE Variable
}
#Extended_MBS_DATA_IE 4 bits The number of the Extended_MBS_DATA_IE that comprises
for(i＝0；i＜n；i++){ n＝#Extended_MBS_DATA_IE
Extended_MBS_DATA_IE() Variable
}
#MBS_DATA_Time_Diversity_IE 4 bits The number of the MBS_DATA_Time_Diversity_IE that comprises
for(i＝0；i＜m；i++){ m＝#MBS_DATA_Time_Diversity_IE
MBS_DATA_Time_Diversity_IE() Variable
}
if！(byte boundary){
Padding Nibble 4 bits Replenish the position, be supplemented to Byte border (Padding to reach byte boundary.)
}
TLV encoding element
}
Table 1
MBS-MAP message is with the position of the further given corresponding service data block of MBS_DATA_IE employed modulation coding mode, power bias (Boosting), next MBS traffic frame and next MBS-MAP message frame on the physical channel resources of appointment.Therefore, as long as can correctly detect MBS-MAP message, terminal just can connect the physical channel resources of pairing business datum piece according to the multicast that this message obtains desired reception, further obtain employed modulation coding mode, power bias etc. on this physical channel resources, comprise the position of the MBS frame of this multicast connection in further definite next frame, thereby carry out the Data Receiving that normal multicast connects.
The information element that MBS_DATA_IE comprised is as shown in table 2:
Sign (Syntax) Figure place (Size) Note (Notes)
MBS_DATA_IE{
MBS_MAP Type＝0 2 bits MBS_MAP type=0
MBS Burst Frame Offset 2 bits Indication will be occurred behind MBS Burst Frame Offset+2 frame by the Burst of this IE location
Next MBS MAP change indication 1 bit Whether indicate the size of MBS MAP message of the next MBS frame of Multicast CID correspondence described herein to compare with this MBS MAP changes
No.of Multicast CID 3 bits
for(i＝0；i＜No.of Multicast CID； i++){
Multicast CID 12 bits Low 12 (12 LSB of CID for multicast) in the multicast hyphen
}
MBS DIUC 4 bits
OFDMA Symbol offset 8 bits OFDMA (OFDM access) symbol offset with respect to next MBS Burst Frame Offset+2 frame MBS zone original position
Subchannel offset 6 bits Subchannel offset with respect to next MBS Burst Frame Offset+2 frame MBS zone original position
Boosting 3 bits 000: do not have enhancing (normal (not boosted)); 001:+6dB; 010:-6dB; 011:+9dB; 100:+3dB; 101:-3dB; 110:-9dB; 111:-12dB;
No.OFDMA Symbols 7 bits The OFDMA number of symbols
No.Subchannels 6 bits Subchannel number
Repetition Coding Indication 2 bits Repeated encoding indication 0b00-does not repeat (No repetition coding) 0b01-and repeats 6 times (Repetition coding of 6 used) of 4 (Repetition coding of 4 used) 0b11-repetitions of 2 (Repetition coding of 2 used) 0b10-repetitions
Next MBS frame offset 8 bits Next MBS vertical shift.The least-significant byte (The Next MBS frame offset value is lower 8 bits of the frame number in which the BS shall transmit the next MBS frame.) of the frame number of next MBS frame will be launched in the base station
Next MBS OFDMA Symbol offset 8 bits Next MBS OFDMA symbol offset.The OFDMA symbol offset of next MBS zone beginning, original position (The offset of the OFDMA symbol in which the next MBS zone starts, measured in OFDMA symbols from the beginning of the downlink frame in which the MBS-MAP is transmitted.) with respect to the downlink frame that comprises the MBS zone
If (Next MBS MAP change indication=1)
Next MBS No.OFDMA symbols 2 bits Indicate the size (It is to indicate the size of MBS_MAP message in Next MBS portion where the BS shall transmit the next MBS frame for multicast CIDs in this IE) of the next MBS_MAP message of the Multicast CID correspondence that this IE comprises
Next MBS No.OFDMA subchannels 6 bits Indicate size (the It is to indicate the size of MBS_MAP message in of the next MBS_MAP message of the Multicast CID correspondence that this IE comprises
Next MBS portion where the BS shall transmit the next MBS frame for multicast CIDs in this IE)
}
}
Table 2
Also comprise Extended_MBS_DATA_IE in the MBS-MAP message.The difference of this IE and MBS_DATA_IE is can comprise a plurality of LCID in a MCID, and the corresponding MBS content identification of each LCID is as shown in table 3:
Sign (Syntax) Figure place (Size) Note (Notes)
No.of MCID 3 bits
for(i＝0；i＜No.of MCID；i++){
MCID 12 bits Low 12 (12 LSB of CID for multicast) among the MCID
No.of LCID 4 bits
for(j＝0；j＜No.of LCID；j++){
LCID 8 bits
}
}
Table 3
Owing in the prior art, only provide base station and terminal according to the flow process of MBS_MAP message at the mutual reception MBS that eats dishes without rice or wine.But scene for the access of many base stations, grand diversity is being eated dishes without rice or wine to realize in all base stations in MBS territory if desired, need MBS_DATA_IE and Extended_MBS_DATA_IE corresponding service data block in each MBS MAP message of each base station configuration identical, and at present, do not provide MBS_DATA_IE and the identical specific implementation method of Extended_MBS_DATA_IE corresponding service data block in each the MBS_MAP message that how to guarantee each base station configuration as yet.
Summary of the invention
The technical problem underlying that the embodiment of the invention will solve provides a kind of method of reseptance and system thereof of Multimedia Broadcast Multicast Service, realizes the grand diversity of MBS in communication system, strengthens the receptivity of MBS.
The invention provides a kind of method of reseptance of Multimedia Broadcast Multicast Service, comprise following steps:
The administrative unit of Multimedia Broadcast Multicast Service MBS performance element to all MBS in a MBS territory sends the required physical layer parameter of configuration MBS mapping message MBS_MAP;
The performance element of described MBS disposes described MBS_MAP according to the described physical layer parameter of receiving, and this MBS_MAP is sent to the receiving element of MBS;
The receiving element of described MBS receives MBS according to described MBS_MAP.
The present invention also provides a kind of receiving system of Multimedia Broadcast Multicast Service, comprises:
Be used in a Multimedia Broadcast Multicast Service MBS territory, sending the administrative unit of the MBS of the required physical layer parameter of configuration MBS mapping message MBS_MAP to the performance element of all MBS;
Be used for disposing according to the described physical layer parameter of receiving the performance element of the MBS of described MBS_MAP message, the performance element of this MBS also is used for this MBS_MAP is sent to the receiving element of MBS; With
Be used for receiving the receiving element of the MBS of MBS according to described MBS_MAP.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, administrative unit by MBS sends the required physical layer parameter of configuration MBS mapping message MBS_MAP at the performance element of all MBS of a MBS territory (MBS Zone) introversion, after the performance element of MBS disposes MBS_MAP according to the physical layer parameter of receiving, the MBS_MAP of configuration is sent to the receiving element of MBS, and the receiving element of MBS receives MBS according to this MBS_MAP.In wireless network, realize the grand diversity of MBS, strengthened the receptivity of MBS.
When being applied in the WiMAX network, the administrative unit of MBS is the MBS agency, and the performance element of MBS is the base station, and the receiving element of MBS is a terminal.The MBS agency is positioned in the access service network (AccessService Network is called for short " ASN "), perhaps is arranged on the ASN gateway or with service flow authorization person SFA binding or as independent functional units to exist.
The administrative unit of MBS is after the performance element to MBS sends physical layer parameter for the first time, can be only when the physical layer parameter of the MBS data that dispose changes, just send new physical layer parameter to the performance element of MBS again, to reduce unnecessary signaling interaction in the network, conserve system resources.
The various information that comprise in the physical layer parameter, MBS_MAP provides foundation for the configuration of the performance element of MBS.The administrative unit of MBS and the performance element of MBS have synchronous time reference, have guaranteed correctness and the uniformity of the performance element configuration MBS_MAP of MBS.
The administrative unit of MBS is added the relevant indication information of this packet for the MBS packet, and the MBS packet that will carry this relevant indication information sends to the performance element of MBS.When the performance element of MBS can clearly should send this MBS packet and the information such as particular location of each MBS packet in a physical frame by this relevant indication information.Guaranteed that the performance element of MBS also can be put into each MBS packet on the correct position when the performance element place of MBS generation packet loss, the packet loss place is sky.Because grand diversity is arranged, so the MBS packet of eating dishes without rice or wine that the receiving element of MBS can send by the performance element to a plurality of MBS merges, and recovers this frame.
The administrative unit of MBS can be according to complexity in different ways to the be correlated with interpolation of indication information of MBS packet, for the present invention program provides numerous embodiments.
Description of drawings
Fig. 1 is according to the flow chart of the base station in the first embodiment of the invention according to the physical layer parameter configuration MBS_MAP of the administrative unit transmission of MBS;
Fig. 2 is the flow chart that sends the MBS packet according to the relevant indication information that add according to the administrative unit of MBS the base station in the second embodiment of the invention;
Fig. 3 is the administrative unit encapsulation MBS packet schematic diagram according to the MBS in the second embodiment of the invention;
Fig. 4 adds relevant indication information to first datagram head schematic diagram afterwards according to the administrative unit of the MBS in the second embodiment of the invention;
Fig. 5 adds relevant indication information to second data header schematic diagram afterwards according to the administrative unit of the MBS in the second embodiment of the invention;
Fig. 6 is the schematic diagram that adds relevant indication information according to the administrative unit of the MBS in the third embodiment of the invention;
Fig. 7 is the schematic diagram that adds relevant indication information according to the administrative unit of the MBS in the four embodiment of the invention;
Fig. 8 is the schematic diagram that adds relevant indication information according to the administrative unit of the MBS in the fifth embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
In the present invention, in a MBS territory, the administrative unit of MBS sends the required physical layer parameter of configuration MBS mapping message MBS_MAP to the performance element of all MBS, the performance element of MBS is according to the physical layer parameter configuration MBS_MAP message of receiving, and this MBS_MAP message is sent to the receiving element of MBS, thereby realize the grand diversity of MBS, increase the receptivity of MBS.The administrative unit of MBS encapsulated the MBS packet earlier before sending the MBS packet, and for the MBS packet adds the relevant indication information of this packet, the MBS packet that will carry this relevant indication information again sends to the performance element of MBS.Make the performance element of MBS clearly should when send this MBS packet and the information such as particular location of each MBS packet in a physical frame by this relevant indication information.Certainly, in the process that the administrative unit of MBS encapsulates the MBS packet, can carry out segmentation and/or packing.
First execution mode of the present invention relates to the method for reseptance of MBS.In the present embodiment, MBS is by the WiMAX Network Transmission, and the administrative unit of MBS is the MBS agency,, the performance element of MBS is the base station, the receiving element of MBS is a terminal.Wherein, the MBS agency is positioned at ASN, perhaps is arranged on the ASN gateway or with service flow authorization person SFA binding or as independent functional units to exist.
Specifically, the performance element of MBS is the base station, according to the administrative unit of MBS be the physical layer parameter configuration MBS_MAP that sends of MBS agency flow process as shown in Figure 1.
In step 110, the MBS proxy configurations is used to construct the required physical layer parameter of MBS_MAP message.This MBS agency is the Centroid that is positioned at ASN territory MBS, can be positioned on the access service network gateway (Access Service Network GateWay is called for short " ASN GW "), or bind with SFA (service flow authorization person), or as independent network element; This MBS agency comprises user's face and chain of command simultaneously; Business is synchronous in the responsible MBS territory.That is to say, in a MBS territory, this MBS agency has synchronous time reference with all base stations, this time reference can be frame number, absolute time or global position system GPS time, perhaps other equivalent information that can convert mutually with above-mentioned information are to guarantee correctness and the uniformity of base station according to the physical layer parameter configuration MBS_MAP that receives.
The physical layer parameter of MBS proxy configurations can comprise one of following information or its combination in any:
(1) downlink interval is used the definition of sign indicating number DIUC, that is to say, (parameter set of downlink or uplink transmission characteristic is described, by DIUC that will be used for the MBS business on all base stations in MBS territory of MBS Agent Definition and corresponding burst configuration service data block profile thereof with use sign indicating number Interval Usage Code is related at interval.The parameter that each configuration comprises has modulation type, forward error correction type, preamble length, guard time etc.) value.The definition of this DIUC can be unified configuration and once be got final product before carrying out the MBS business, send out when the DIUC of MBS or its corresponding service data block profile need change again.
Because a base station may belong to a plurality of MBS territory, so the definition of DIUC, may be an ASN scope domestic demand unified Definition.
Timestamp when (2) MBS_MAP message sends first and cycle, the perhaps transmitting time of the corresponding M BS_MAP message that will send out of base station.Wherein, timestamp and transmitting time are frame number, absolute time or global position system GPS time, perhaps other equivalent information that can convert mutually with above-mentioned information.Preceding a kind of configuration parameter respective base station cycle sends the situation of MBS_MAP message, and being formed in a period of time of MBS_MAP message remains unchanged.When needing change, the MBS agency sends new MBS_MAP Indication message to the base station more again.Each MBS_MAP message that a kind of configuration pin in back sends the base station is all issued the situation of Indication message one by one by the MBS agency.These parameters can be configured according to the multicast service time started that receives from MBS server (MBS Sever) or content supplier place by MBS agency.
Wherein, the transmitting time first of MBS_MAP message can be frame number Frame number (frame number as if all base stations in the MBS territory is synchronous), perhaps time parameter.And, can indicate the base station to issue the frame period of MBS_MAP message by the vertical shift cycle of MBS_MAP message.
(3) position indication information of MBS_MAP message, as by comprising the OFDMA symbol offset, the OFDMA subchannel offset, the OFDMA number of symbols, at least one parameter in the parameters such as OFDMA subchannel number is indicated the position indication information of this MBS_MAP message.
(4) the LCID tabulation (if having a plurality of MBS contents in a PDU) that comprises of the MCID tabulation that comprises of the business datum piece described of each MBS_DATA_IE and each MCID.Wherein, LCID is distributed according to MBS content identification (Contents ID) by the MBS agency, and the two is the relation of shining upon one by one.A LCID can be unique on a MCID, and is perhaps unique on MBS agency, perhaps unique in a MBS territory scope.
(5) the MBS DIUC of the business datum piece use of each MBS_DATA_IE description.
(6) timestamp that sends first of the business datum piece described of each MBS_DATA_IE and each sends the cycle of this business datum piece later on, the perhaps transmitting time of corresponding business data block.These parameters can be configured according to the multicast service time started that obtains by the MBS agency.Wherein, timestamp and transmitting time are frame number, absolute time or global position system GPS time, perhaps other equivalent information that can convert mutually with above-mentioned information.
(7) position indication information of the business datum piece of each MBS_DATA_IE description, as by comprising the OFDMA symbol offset, OFDMA subchannel offset, OFDMA number of symbols, at least one parameter in the parameters such as OFDMA subchannel number is indicated the position indication information of this business datum piece.
(8) power (Boosting) of the business datum piece of each MBS_DATA_IE description and repeated encoding indication (Repetition Coding Indication).
(9) the PDU size restriction of the business datum piece of each MBS_DATA_IE description.
(10) the packing chopping rule of the business datum piece of each MBS_DATA_IE description: be used to indicate each base station physical layer how to pack/segmentation.Wherein, the packing chopping rule can for: forbid the packing and segmentation; Perhaps allow packing, forbid segmentation; Perhaps allow segmentation, forbid packing; Perhaps allow packing and segmentation.
(11) MBS_DATA_IE sequence number.
(12) PDU sequence number.
The various information that comprise in the physical layer parameter, MBS_MAP provides foundation for the configuration of the performance element of MBS.
Then, MBS agency all base stations in being in same MBS territory send the physical layer parameter that is disposed, as step 120 and step 120 '.MBS agency can set up message by the MBS Business Stream with physical layer parameter is handed down to the base station, also can issue with message bearing independently.
Then, receive that the base station of this physical layer parameter can return the affirmation message of whether receiving this physical layer parameter to MBS agency, the MBS agency can adjust the MBS_MAP message of appointment in the physical layer parameter and/or the transmitting time of business datum piece according to this confirmation, this step is an optional step, as step 130 and step 130 '.
Then, all base stations of receiving this physical layer parameter are according to this physical layer parameter configuration MBS_MAP message, and the MBS_MAP message that disposed is sent to the receiving element of MBS in the time of appointment by eating dishes without rice or wine, as step 140 and step 140 '.
Need to prove that the MBS agency needn't issue the physical layer parameter indication at each MBS frame.After for the first time issuing indication, only when the physical layer parameter of the MBS data that dispose changes, just need issue indication again.Otherwise the multicast configuration can be carried out according to the physical layer parameter indication that the last time receives in the base station, to reduce unnecessary signaling interaction in the network, conserve system resources.
Then, terminal is according to the MBS_MAP message sink MBS that receives.Make the grand diversity that in the WiMAX network, has realized MBS, strengthened the receptivity of MBS.
Second execution mode of the present invention relates to the method for reseptance of MBS.Present embodiment has increased the relevant indication information that adds this packet for the MBS packet on the basis of first execution mode, the base station sends the flow process of MBS packet according to relevant indication information.
Specifically, as shown in Figure 2, in step 210, the MBS agency who is positioned at ASN is configured the MBS packet, and adds and go up relevant indication information.Wherein, to the configuration of MBS packet can for: the MBS packet that receives directly added goes up relevant indication information; Perhaps the multicast packet of receiving is encapsulated, be packaged into Payload (net load) form of a MAC PDU, perhaps be packaged into a MAC PDU form, perhaps directly be packaged into the business datum piece form that a plurality of MAC PDU form, add then and go up indication information.In the present embodiment, the MBS packet that the MBS proxy interfaces is received directly adds goes up relevant indication information, as frame number or temporal information, so that the base station can learn when this packet sends after receiving this MBS packet.
Specifically, as shown in Figure 3, the MBS agency encapsulates the MBS packet of receiving, the relevant indication information of this MBS packet can add to after first datagram head, as shown in Figure 4, also can be added on after second data header, as shown in Figure 5.
Wherein, the relevant indication information parameter of interpolation can have:
(1) length of the relevant indication information of Tian Jiaing, if the relevant indication information that adds is a regular length, then this field can be omitted.
(2) timestamp of indicating this MBS packet when to send is as frame number or time value.
(3) sequence number (optional) of indication MBS packet.The sequence of data packet default value can be from " 0 " open numbering, MBS packet of every transmission (based on identical multicast ip address and port numbers), and this value adds 1.
(4) MBS_DATA_IE sequence number (optional), being used to indicate this multi-cast business data piece is to belong to the business datum piece which MBS_DATA_IE describes.
(5) PDU sequence number (optional) is used to indicate this MBS packets need to be placed into which corresponding PDU.
(6) skew (Offset) (optional) comprises under the PDU sequence number situation at relevant indication information, and this skew can be used for the position that this MBS packet is positioned at PDU.Such as, be deviant with the load section start of PDU, perhaps the MAC head with PDU is a section start, unit is bit or byte.
This shows that when the base station can clearly should send this MBS packet and the information such as particular location of each MBS packet in a physical frame by the relevant indication information of MBS packet.Guaranteed that the base station also can be put into each MBS packet on the correct position when place, base station generation packet loss, the packet loss place is sky.Because grand diversity is arranged, so terminal can merge by the MBS packet of eating dishes without rice or wine that a plurality of base stations are sent, and recovers this frame.
Then, MBS agency all base stations in same MBS territory send the MBS packet that this carries relevant indication information, as step 220 and step 220 '.
Then, all base stations of receiving this MBS packet encapsulate this MBS packet, according to the relevant indication information in this packet this packet is put on the assigned address of specifying physical frame, and sends to terminal by eating dishes without rice or wine in the corresponding time, as step 230 and step 230 '.
Need to prove that whether synchronous the performance element of MBS can also send to MBS agency and be used for designation data affirmation message, so that the MBS agency can adjust the transmission opportunity of MBS data according to this acknowledge message.
The 3rd execution mode of the present invention relates to the method for reseptance of MBS.The present embodiment and second execution mode are roughly the same, its difference only is, in second execution mode, the MBS packet that the MBS proxy interfaces is received directly adds goes up relevant indication information, and in the present embodiment, the MBS agency dresses up the form of the Payload of MAC PDU with the MBS data envelope of receiving, and then adds relevant indication information, as shown in Figure 6.
Wherein, the relevant indication information parameter of interpolation can have:
(1) length of the relevant indication information of Tian Jiaing, if the relevant indication information that adds is a regular length, then this field can be omitted.
(2) timestamp of indicating this MBS packet when to send is as frame number or time value.
(3) sequence number (optional) of indication MBS packet.The sequence of data packet default value can be from " 0 " open numbering, MBS packet of every transmission (based on identical multicast ip address and port numbers), and this value adds 1.
(4) MBS_DATA_IE sequence number (optional), being used to indicate this multi-cast business data piece is to belong to the business datum piece which MBS_DATA_IE describes.
(5) corresponding relation (optional) of this MBS packet and MCID is used to indicate this MBS packet is will be put into which MCID to go up transmission.The indication added can be MCID, perhaps Dui Ying PDU sequence number etc.
The 4th execution mode of the present invention relates to the method for reseptance of MBS.Present embodiment and the 3rd execution mode are roughly the same, its difference only is, in the 3rd execution mode, the MBS agency dresses up the MBS data envelope of receiving the form of the Payload of MAC PDU, and then add relevant indication information, and in the present embodiment, the MBS agency dresses up the MBS data envelope of receiving the form of MAC PDU, and then add relevant indication information, as shown in Figure 7.Wherein, the relevant indication information of interpolation is identical with the 3rd execution mode, does not repeat them here.
The 5th execution mode of the present invention relates to the method for reseptance of MBS.Present embodiment and the 4th execution mode are roughly the same, its difference only is, in the 4th execution mode, the MBS agency dresses up the form of MAC PDU with the MBS data envelope of receiving, and then adds relevant indication information, and in the present embodiment, the MBS agency dresses up the MBS data envelope of receiving the form of a plurality of MAC PDU, be the form of the business datum piece that MBS_MAP_IE describes in the MBS-MAP message, and then add relevant indication information, as shown in Figure 8.
Wherein, the relevant indication information parameter of interpolation can have:
(1) length of the relevant indication information of Tian Jiaing, if the relevant indication information that adds is a regular length, then this field can be omitted.
(2) timestamp of indicating this MBS packet when to send is as frame number or time value.
(3) MBS_DATA_IE sequence number (optional), being used to indicate this multi-cast business data piece is to belong to the business datum piece which MBS_DATA_IE describes.
If in the relevant indication information parameter of adding the MBS_DATA_IE sequence number is arranged, and the MBS agency also has this parameter in the physical layer parameter that the base station sends, then the base station just can learn which MBS_DATA_IE corresponding service data block this is from relevant indication information, has not separated the interior specifying information of business datum piece and do not spend.
The 6th execution mode of the present invention relates to the receiving system of MBS, comprises:
Be used in a MBS territory, sending the administrative unit of the MBS of the required physical layer parameter of configuration MBS mapping message MBS_MAP to the performance element of all MBS; Be used for the performance element according to the MBS of the physical layer parameter configuration MBS_MAP message of receiving, the performance element of this MBS also is used for this MBS_MAP is sent to the receiving element of MBS; With the receiving element that is used for receiving the MBS of MBS business according to MBS_MAP.Thereby in network, realized the grand diversity of MBS, strengthened the receptivity of MBS.
The administrative unit of MBS and the performance element of MBS have synchronous time reference, as frame number, absolute time or global position system GPS time, perhaps other equivalent information that can convert mutually with above-mentioned information are to guarantee correctness and the uniformity of base station according to the physical layer parameter configuration MBS_MAP that receives.
In the WiMAX network, the administrative unit of MBS is the MBS agency, and the performance element of MBS is the base station, and the receiving element of MBS is a terminal.Wherein, the MBS agency is positioned at ASN, perhaps is arranged on the ASN gateway or with service flow authorization person SFA binding or as independent functional units to exist.That is to say that send the required physical layer parameter of configuration MBS_MAP by MBS agency all base stations in being in same MBS territory, this physical layer parameter can comprise one of following information or its combination in any:
Downlink interval is used the definition of sign indicating number DIUC, the stamp of transmitting time first of base station transmission MBS_MAP message and business datum piece and cycle or base station send the time of corresponding MBS_MAP and this business datum piece, the position indication information of MBS_MAP and this business datum piece, the LCID tabulation that the MCID tabulation that the business datum piece that each " MBS_DATA_IE " describes comprises and each MCID comprise, the MBS DIUC that this business datum piece uses, the power of this business datum piece and repeated encoding indication, the PDU size restriction of this business datum piece, the packing chopping rule of this business datum piece, " MBS_DATA_IE " sequence number, PDU sequence number etc.
The various information that comprise in the physical layer parameter, MBS_MAP provides foundation for the configuration of the performance element of MBS.
What deserves to be mentioned is that MBS agency also can be used for adding for the MBS packet the relevant indication information of this packet, and the MBS packet that will carry this relevant indication information sends to the base station, the base station is according to sending this MBS packet by relevant indication information.Wherein, relevant indication information comprises one of following parameter or its combination in any:
The corresponding relation of sequence number, " MBS_DATA_IE " sequence number, the PDU sequence number of the length of relevant indication information, timestamp that the MBS packet sends, MBS packet, the skew, MBS packet and the MCID that are used to indicate the MBS packet to be positioned at the PDU position.
This shows that when the base station can clearly should send this MBS packet and the information such as particular location of each MBS packet in a physical frame by the relevant indication information of MBS packet.Guaranteed that the base station also can be put into each MBS packet on the correct position when place, base station generation packet loss, the packet loss place is sky.Because grand diversity is arranged, so terminal can merge by the MBS packet of eating dishes without rice or wine that a plurality of base stations are sent, and recovers this frame.
Though pass through with reference to some of the preferred embodiment of the 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 the form and details, and without departing from the spirit and scope of the present invention.

Claims (17)

1. the method for reseptance of a Multimedia Broadcast Multicast Service is characterized in that, comprises following steps:
The administrative unit of Multimedia Broadcast Multicast Service MBS performance element to all MBS in a MBS territory sends the required physical layer parameter of configuration MBS mapping message MBS_MAP;
The performance element of described MBS disposes described MBS_MAP according to the described physical layer parameter of receiving, and this MBS_MAP is sent to the receiving element of MBS;
The receiving element of described MBS receives MBS according to described MBS_MAP.
2. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, described MBS transmits by microwave access global intercommunication network; The administrative unit of described MBS is the MBS agency; The performance element of described MBS is the base station; The receiving element of described MBS is a terminal;
Described MBS agency is positioned at access service network ASN, perhaps is arranged on the ASN gateway, perhaps with service flow authorization person SFA binding, perhaps exists as independent functional units.
3. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 1 is characterized in that, the administrative unit of described MBS and the performance element of described MBS have synchronous time reference.
4. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 3 is characterized in that, described time reference is frame number, absolute time or global position system GPS time.
5. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 1, it is characterized in that, the administrative unit of described MBS is after the performance element to described MBS sends described physical layer parameter for the first time, only when the physical layer parameter of MBS data of configuration changes, just again to the new physical layer parameter of performance element transmission of described MBS.
6. according to the method for reseptance of each described Multimedia Broadcast Multicast Service in the claim 1 to 5, it is characterized in that described physical layer parameter comprises one of following information or its combination in any:
Downlink interval is used the definition of sign indicating number DIUC, the performance element of described MBS sends MBS_MAP and the performance element of the stamp of transmitting time first of the business datum piece be made up of protocol Data Unit PDU and cycle or this MBS sends time of corresponding MBS_MAP and described business datum piece, the position indication information of MBS_MAP and described business datum piece, the Logic Channel Identifier LCID tabulation that the multicast connection identifier MCID tabulation that the business datum piece that each " MBS_DATA_IE " describes comprises and each MCID comprise, the MBS DIUC that described business datum piece uses, the power of described business datum piece and repeated encoding indication, the PDU size restriction of described business datum piece, the packing chopping rule of described business datum piece, " MBS_DATA_IE " sequence number, the PDU sequence number.
7. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 6 is characterized in that,
The time of described timestamp and corresponding MBS_MAP of transmission and described business datum piece is frame number, absolute time or global position system GPS time;
The position indication information of described MBS_MAP and described data block comprises one of following parameter or its combination in any: OFDM inserts OFDMA symbol offset, OFDMA subchannel offset, OFDMA number of symbols, OFDMA subchannel number;
The packing chopping rule of described data block is for allowing packing and/or segmentation.
8. according to the method for reseptance of each described Multimedia Broadcast Multicast Service in the claim 1 to 5, it is characterized in that, also comprise following steps:
The administrative unit of described MBS is added the relevant indication information of this packet for the MBS packet, and the MBS packet that will carry this relevant indication information sends to the performance element of described MBS;
The performance element of described MBS sends described MBS packet according to described relevant indication information.
9. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 8 is characterized in that, the administrative unit of described MBS is added described relevant indication information for the MBS packet in the following manner:
The MBS packet that receives is directly added described relevant indication information;
The MBS packet of receiving is packaged as the form of the net load form of a medium Access Layer MAC PDU or a medium Access Layer MAC PDU or the form of the business datum piece that MAC PDU forms, again the MBS packet after the packing is added described relevant indication information.
10. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 8 is characterized in that, described relevant indication information comprises one of following parameter or its combination in any:
The corresponding relation of sequence number, " MBS_DATA_IE " sequence number, the PDU sequence number of the length of relevant indication information, timestamp that the MBS packet sends, MBS packet, the skew, MBS packet and the MCID that are used to indicate the MBS packet to be positioned at the PDU position.
11. the method for reseptance of Multimedia Broadcast Multicast Service according to claim 8 is characterized in that, also comprises following steps:
Whether synchronous the performance element of described MBS send to the administrative unit of described MBS and be used for designation data affirmation message;
The administrative unit of described MBS is adjusted the MBS data according to described acknowledge message and is sent opportunity.
12. the receiving system of a Multimedia Broadcast Multicast Service is characterized in that, comprises:
Be used in a Multimedia Broadcast Multicast Service MBS territory, sending the administrative unit of the MBS of the required physical layer parameter of configuration MBS mapping message MBS_MAP to the performance element of all MBS;
Be used for disposing according to the described physical layer parameter of receiving the performance element of the MBS of described MBS_MAP message, the performance element of this MBS also is used for this MBS_MAP is sent to the receiving element of MBS; With
Be used for receiving the receiving element of the MBS of MBS according to described MBS_MAP.
13. the receiving system of Multimedia Broadcast Multicast Service according to claim 12 is characterized in that, described MBS transmits by microwave access global intercommunication network; The administrative unit of described MBS is the MBS agency; The performance element of described MBS is the base station; The receiving element of described MBS is a terminal;
Described MBS agency is positioned at access service network ASN, perhaps is arranged on the ASN gateway, perhaps with service flow authorization person SFA binding, perhaps exists as independent functional units.
14. the receiving system of Multimedia Broadcast Multicast Service according to claim 12 is characterized in that, the administrative unit of described MBS and the performance element of described MBS have synchronous time reference;
Described time reference is frame number, absolute time or global position system GPS time.
15. the receiving system according to each described Multimedia Broadcast Multicast Service in the claim 12 to 14 is characterized in that, described physical layer parameter comprises one of following information or its combination in any:
Downlink interval is used the definition of sign indicating number DIUC, the performance element of described MBS sends MBS_MAP and the performance element of the stamp of transmitting time first of the business datum piece be made up of protocol Data Unit PDU and cycle or this MBS sends time of corresponding MBS_MAP and described business datum piece, the position indication information of MBS_MAP and described business datum piece, the Logic Channel Identifier LCID tabulation that the multicast connection identifier MCID tabulation that the business datum piece that each " MBS_DATA_IE " describes comprises and each MCID comprise, the MBS DIUC that described business datum piece uses, the power of described business datum piece and repeated encoding indication, the PDU size restriction of described business datum piece, the packing chopping rule of described business datum piece, " MBS_DATA_IE " sequence number, the PDU sequence number.
16. receiving system according to each described Multimedia Broadcast Multicast Service in the claim 12 to 14, it is characterized in that, the administrative unit of described MBS also is used to the MBS packet to add the relevant indication information of this packet, and the MBS packet that will carry this relevant indication information sends to the performance element of described MBS;
The performance element of described MBS also is used for sending described MBS packet according to described relevant indication information.
17. the receiving system of Multimedia Broadcast Multicast Service according to claim 16 is characterized in that, described relevant indication information comprises one of following parameter or its combination in any:
The corresponding relation of sequence number, " MBS_DATA_IE " sequence number, the PDU sequence number of the length of relevant indication information, timestamp that the MBS packet sends, MBS packet, the skew, MBS packet and the MCID that are used to indicate the MBS packet to be positioned at the PDU position.
CN2006101370478A 2006-10-18 2006-10-18 Receiving method and system for multicast broadcast service Expired - Fee Related CN101166143B (en)

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