CN101034921A - Method, network and device for multi-media broadcast and multi-cast service transmission - Google Patents
Method, network and device for multi-media broadcast and multi-cast service transmission Download PDFInfo
- Publication number
- CN101034921A CN101034921A CNA2006100573507A CN200610057350A CN101034921A CN 101034921 A CN101034921 A CN 101034921A CN A2006100573507 A CNA2006100573507 A CN A2006100573507A CN 200610057350 A CN200610057350 A CN 200610057350A CN 101034921 A CN101034921 A CN 101034921A
- Authority
- CN
- China
- Prior art keywords
- signal
- redundancy
- cell
- version
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
This invention discloses a multimedia broadcast and multicast transmission business methods, wireless network controller, user equipment, base stations and wireless networks, to solve the existing broadcast and multicast multimedia business are not high transmission performance problems. The present invention including: A. transmission in the same time interval, all issued by the district adjacent broadcasting business and multicast signals, including at least two versions of the incremental redundancy bits of information; B. user equipment according to redundancy version, the signal will be received combing. Through the using of this invention, the signal after combine contains at least two kinds of incremental redundancy bits of information, which would use more redundancy bits of information in such way to provide the potential coding gain, increase and business MBMS transmission performance.
Description
Technical field
The present invention relates to field of wireless, particularly relate to method, radio network controller, subscriber equipment, base station and the wireless network of a kind of multimedia broadcasting and multicast service transmission.
Background technology
In various mobile Packet Services, comprise video request program, television broadcasting, video conference, online education, and business such as interactive game all has a principal character, the a plurality of users that promptly subscribe to this business receive identical data simultaneously, and should business compare with general data, often have characteristics such as the concurrent user is many, data volume big, longer duration, delay sensitive.Obviously, if this class business is still continued to use common point-to-point transmission method, be very inefficient for the mobile communications network of resource scarcity.For this reason, 3GPP (third generation collaborative project) introduces MBMS (Multimedia Broadcast Multicast Service, multimedia broadcasting and multicast service) technology at the transmission demand of this class broadcasting and multicast service at Release 6.In the MBMS technology, a data source can send to a plurality of users simultaneously and a little arrive the multiple spot data, and realizes that effectively Internet resources are shared, comprises that mobile core network and access network resource are shared, especially air interface resource.
Because the data traffic of MBMS business is bigger, duration is longer, for saving interface-free resources, UMTS (Universal Mobile Telecommunication System, universal mobile telecommunications system) network has been introduced the logic channel of new support point to multicast communication at the MBMS business, be MTCH (MBMSPoint-to-multipoint Traffic Channel, MBMS point-to-multipoint service channel), MCCH (MBMSPoint-to-multipoint Control Channel, the MBMS point is to the multiple spot control channel) and MSCH (MBMS Point-to-multipoint Scheduling Channel, the MBMS point is to multiple spot control scheduling channel), be respectively applied for carrying MBMS business datum, the professional transmitting scheduling information of control information and MBMS.
Standard " TS25.346; Introduction of the MBMS in the Radio AccessNetwork (RAN); V6.7.0; 2005-12 " according to 3GPP, the transmission channel of above-mentioned three logic channels is FACH (Forward Access Channel, forward access channel), FACH then goes up transmission at down physical channel S-CCPCH (Secondary Common Control Physical Channel, S-CCPCH Secondary Common Control Physical Channel).The frame structure of S-CCPCH as shown in Figure 1, S-CCPCH comprises TFCI (TransportFormat Combination Index, transformat combination indication), data and three fields of dedicated pilot, wherein, TFCI is used to indicate this S-CCPCH to go up the information such as transformat of the transmission block of transmission.
For the UMTS system, each down physical channel at first carries out spread spectrum by orthogonal spreading code (channel code), carries out scrambling by the sub-district multiple scrambler of specific down link again.At receiving terminal, the down physical channel of same sub-district mainly by spreading code distinguish, the multipath component of same physical channel then separated by descending scrambler, and the down physical channel of adjacent different districts also can be distinguished even therefore spreading code is identical owing to the multiple scrambler difference of down link.
Because a plurality of users receive identical data simultaneously among the MBMS, so subscriber equipment (UE) that receives the MBMS business, not only can receive the S-CCPCH channel of the carrying MBMS business of this sub-district, also can receive the S-CCPCH channel of the carrying MBMS business of adjacent sub-district, according to the standard TS25.346 of 3GPP, the point of MBMS supports soft merging and selectivity to merge two kinds of receive modes in multicast communication.
In the diversity technique of radio communication, high specific merges and the selectivity merging is two kinds of typical diversity receiving technologies.If there are many receiving branchs in a receiver system,, adopt high specific merging and selectivity to merge this two kinds of diversity reception modes usually for the signal with these receiving branchs merges to obtain better receptivity.Wherein, selectivity merge can from many receiving branchs of this receiver system, select the signal to noise ratio maximum a branch road as output, also can receive processing respectively to each bar receiving branch after, the highest branch road of selective reception quality is as output; As a kind of typical soft folding, it is before each receiving branch is merged that high specific merges, and each receiving branch signal is weighted, and its weight coefficient is proportional to every branch road received signal to noise ratio separately.In these two kinds of diversity reception modes, high specific merges mode and has more performance than selectivity merging mode.
In the MBMS system, selectivity merging mode is applicable to the nonsynchronous situation in each sub-district, at this moment UE will receive the MTCH of the identical or close neighbor cell of MBMS radio bearer bit rate, because the Radio Link of MTCH control (RLC) layer adopts UM (Unacknowledged Mode) pattern, therefore UE can utilize the RLCPDU alignment of the MTCH that the sequence number of RLC PDU (protocol Data Unit) will receive from different sub-districts, each sequence number is therefrom being selected the correct PDU of transmission, formed the RLC PDU of the MTCH of quality of reception raising at last.
To FDD (Frequency Division Duplexing, Frequency Division Duplexing (FDD)) system, soft merging mode is applicable to the situation that each sub-district is synchronous, the S-CCPCH channel of the MBMS business datum that each sub-district synchronized transmissions carrying at this moment is identical, the time difference of the signal arrival UE of each sub-district mainly is that the path difference of each cell signal arrival UE causes, not too big for the contiguous this time difference of sub-district, therefore, as long as the signal of adjacent cell is within the multipath reception window of the RAKE receiver of UE, UE just can combine the signal high specific on the S-CCPCH channel of the respective cell that receives, thereby improves the receptivity of MBMS business.
To TDD (Time Division Duplexing, time division duplex) system, because grand diversity reception when UE does not support multi-cell signals, therefore soft merging mode realizes by " SimulcastCombining " (radio hookup merging) mode, the essence of this technology is that UE receives the S-CCPCH channel of the carrying MBMS business datum of different adjacent sub-districts at different time slots, and is different from the S-CCPCH channel that in FDD UE receives the carrying MBMS business datum of all adjacent sub-districts simultaneously.But the grand diversity reception that the radio hookup of TDD merges in essence with FDD is identical, all is adjacent cell signal to be carried out high specific merge diversity reception.
UE receives in order to carry out selectivity merging mode or soft merging mode, need to receive " the MBMS NEIGHBOURING CELL P-T-M RB INFORMATION " information in the relevant RRC message, from this information, obtain to carry out the configuration information of S-CCPCH channel that corresponding merging receives the carrying MBMS business datum of required adjacent sub-district.UE selects suitable participation selectivity to merge or the adjacent sub-district of soft merging mode usually in the following way: the adjacent sub-district that those UE has been obtained to carry the S-CCPCH channel configuration information of MBMS business datum, if the signal to noise ratio (CPICHEc/No) from the downlink common pilot of corresponding adjacent sub-district surpasses certain thresholding, then merge or the adjacent sub-district of soft merging mode as selectivity.
At present, under the synchronous situation of each neighbor cell (FDD), the S-CCPCH channel of the MBMS business datum that the carrying of all neighbor cell synchronized transmissions is identical, promptly the data-signal behind the channel coding that sends of all neighbor cells all comprises identical systematic bits and identical redundant information bits.Although prior art adopts the high specific folding that the signal from each sub-district is carried out soft merging and has obtained the diversity gain benefit, thereby improved the receptivity of the subscriber equipment of cell edge to the MBMS business datum, but, each sub-district transmits and has all adopted identical redundant information bits in the prior art, and the potential coding gain that does not utilize more redundant information bits to provide, therefore, still can not reach optimum transmission performance.
Summary of the invention
The invention provides method, radio network controller, subscriber equipment, base station and the wireless network of a kind of multimedia broadcasting and multicast service transmission, in order to the not high problem of transmission performance that solves present multimedia broadcasting and multicast service.
The inventive method is applied to the synchronous situation of each neighbor cell, comprises the following steps:
A, at same Transmission Time Interval, in broadcasting that all neighbor cells send and the multicast service signal, comprise the incremental redundancy information bit of at least two kinds of versions; B, subscriber equipment carry out soft merging according to redundancy version information with the signal of receiving.
In the described steps A, the version of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends has nothing in common with each other.Described step B comprises the following steps: that B11, subscriber equipment carry out multipath respectively to the signal of each sub-district of receiving and merge; Systematic bits in B12, each cell signal that will receive is carried out high specific and is merged; The redundancy version information of each cell signal that B13, basis are received after the systematic bits combination after incremental redundancy information bit and the high specific merging, is carried out combined decoding, to finish the reception of signal.
Perhaps, in the described steps A, the version part of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends is identical, and the remainder difference.Described step B comprises the following steps: that B21, subscriber equipment carry out multipath respectively to the signal of each sub-district of receiving and merge; B22, the signal that will have a same redundant version carry out high specific and merge; B23, will have systematic bits in the signal of different redundancy versions and carry out high specific and merge; B24, according to the redundancy version information of each cell signal of receiving, after the systematic bits that incremental redundancy information bit and step B23 are obtained makes up, carry out combined decoding, to finish the reception of signal.The signal with different redundancy versions described in the step B23 comprises: among the step B22 signal with same redundant version is carried out after high specific merges the signal of output, and the signal that has different redundancy versions in each cell signal of receiving.
The length of the incremental redundancy information bit that signal comprised of the different redundancy versions that each neighbor cell sends is identical, or different.
The signal that subscriber equipment is received is the signal that send arbitrary sub-district in described each neighbor cell, perhaps the signal that sends for a plurality of sub-districts in described each neighbor cell, the perhaps signal that sends for whole neighbor cells.
Described each neighbor cell is determined by following steps: subscriber equipment obtains the configuration information of the S-CCPCH Secondary Common Control Physical Channel S-CCPCH of the bearing multimedia broadcast of related cell and multicast service MBMS data from the RRC message of receiving; If the signal to noise ratio of the downlink common pilot of related cell surpasses default threshold value, judge that then this sub-district is a neighbor cell.
Radio network controller of the present invention is applied to multimedia broadcasting and multicast service transmission, comprising:
Redundancy versions controlled function unit is used to each neighbor cell to mate corresponding redundancy versions, so that comprise the incremental redundancy information bit of respective version in the signal that each neighbor cell sends; The RRC message generation unit is used to generate the RRC message that carries redundancy version information, and cooperates described redundancy versions controlled function unit, and the RRC message that generates is sent from corresponding sub-district.
Described redundancy versions controlled function unit obtains redundancy version parameters from base-station node B applying portion NBAP and/or wireless subsystem applying portion RNSAP.
Subscriber equipment of the present invention is used for receiving multimedia broadcast and multi-cast business data, comprising: the redundancy versions acquiring unit is used for obtaining from the RRC message of receiving the redundancy version information of the signal that corresponding neighbor cell sends; Soft merge cells is used for the redundancy version information obtained according to described redundancy versions acquiring unit, and the signal of receiving is carried out soft merging.
Base station of the present invention is used for transmitting multimedia broadcast and multi-cast business data, comprising: the redundant information generation unit, be used for the redundancy version parameters current according to its coverage cell, and generate the incremental redundancy information bit of respective version.
Described redundant information generation unit generates the incremental redundancy information bit of respective version in the mode of cascade rate-matched again after the Turbo coding.
Wireless network of the present invention, be applied to multimedia broadcasting and multicast service transmission, comprise some neighbor cells, also comprise: radio network controller, be used to each neighbor cell to mate corresponding redundancy versions, and in the RRC message that issues, carry redundancy version information; The base station is used for the redundancy version parameters current according to its coverage cell, generates the incremental redundancy information bit of respective version.Subscriber equipment is used to obtain the redundancy version information of the signal that each neighbor cell sends, and in view of the above the signal of receiving is carried out soft merging.
Beneficial effect of the present invention is as follows:
The inventive method is under the synchronous situation of each neighbor cell, the signal that no longer adopts all neighbor cells to send all comprises the transmission means of the identical systematic bits redundant information bits identical with version, but, comprise the incremental redundancy information bit (systematic bits is all identical) of at least two kinds of versions in the signal that all neighbor cells send at same Transmission Time Interval; Subscriber equipment carries out soft merging according to redundancy version information with the signal of receiving.Be to have comprised at least two kinds of incremental redundancy information bits in the signal after the soft merging, like this with respect to prior art, the potential coding gain that can utilize more redundant information bits to provide, thus improved the transmission performance of MBMS business.
Further, in order to support the inventive method, the incremental redundancy information bit that comprises at least two kinds of versions in the signal that neighbor cell is sent, the present invention provides a kind of enhancement mode RNC again, in described RNC, comprise: redundancy versions controlled function unit, be used to each neighbor cell to mate corresponding redundancy versions, so that comprise the incremental redundancy information bit of respective version in the signal that each neighbor cell sends; The RRC message generation unit is used to generate the RRC message that carries redundancy version information, and cooperates described redundancy versions controlled function unit, the RRC message that generates is sent from corresponding sub-district, so that subscriber equipment is known the redundancy versions of respective cell.
In order to cooperate above-mentioned RNC, make the sub-district can be according to the redundancy version parameters of RNC configuration, generate the incremental redundancy information bit of respective version, the present invention provides a kind of base station again, it comprises: the redundant information generation unit, be used for the redundancy version parameters current, generate the incremental redundancy information bit of respective version according to its coverage cell.
In order to support the inventive method, subscriber equipment had know the function of redundancy versions, and carry out soft merging according to redundancy versions, the present invention also provides a kind of subscriber equipment, comprise: the redundancy versions acquiring unit is used for obtaining from the RRC message of receiving the redundancy version information of the signal that corresponding neighbor cell sends; Soft merge cells is used for the redundancy version information obtained according to described redundancy versions acquiring unit, and the signal of receiving is carried out soft merging.
Because there are two kinds of situations in the redundancy versions of each neighbor cell that the redundancy versions acquiring unit in the described subscriber equipment obtains, and soft merging flow process of the present invention unlike the prior art, so further correspondingly again provide two kinds of soft merging modes.Mode one: the situation that the version of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends has nothing in common with each other comprises the following steps: that subscriber equipment carries out multipath respectively to the signal of each sub-district of receiving and merges; Systematic bits in each cell signal of receiving is carried out high specific to be merged; According to the redundancy version information of each cell signal of receiving, after the systematic bits combination after incremental redundancy information bit and the high specific merging, carry out combined decoding, to finish the reception of signal.Mode two: the version part of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends is identical, and the different situation of remainder, comprises the following steps: that subscriber equipment carries out multipath respectively to the signal of each sub-district of receiving and merges; The signal that will have the same redundant version carries out high specific and merges; To have systematic bits in the signal of different redundancy versions carries out high specific and merges; According to the redundancy version information of each cell signal of receiving, after the systematic bits combination after incremental redundancy information bit and the high specific merging, carry out combined decoding, to finish the reception of signal.
Above-mentioned RNC, base station and user equipment applications in wireless network, have been constituted wireless network of the present invention.
Description of drawings
Fig. 1 is the frame structure schematic diagram of S-CCPCH;
Fig. 2 is a radio network controller structural representation of the present invention;
Fig. 3 is an architecture of base station schematic diagram of the present invention;
Fig. 4 is a user device architecture schematic diagram of the present invention;
Fig. 5 is the inventive method flow chart of steps;
Fig. 6 is the different redundant informations generation schematic diagrames based on the Turbo coding;
Fig. 7 is the soft merging flow chart in the inventive method example one;
Fig. 8 is the soft merging flow chart in the inventive method example two.
Embodiment
In order to improve the transmission performance of multimedia broadcasting and multicast service, the invention provides a kind of radio network controller (RNC), it has the function of existing RNC, and referring to shown in Figure 2, it also comprises: redundancy versions controlled function unit and RRC message generation unit.
Described redundancy versions controlled function unit, be used for sending redundancy version parameters to the transmission point to the multimedia broadcasting of multiple spot and each sub-district of multicast service, so that comprise the incremental redundancy information bit of respective version in the signal that each neighbor cell sends by base-station node B applying portion NBAP and/or wireless subsystem applying portion RNSAP.
Described RRC message generation unit, be used for obtaining redundancy version information from redundancy versions controlled function unit, carry the RRC message of redundancy version information with generation, and cooperate described redundancy versions controlled function unit, the RRC message that generates is sent to subscriber equipment.
Cooperate above-mentioned RNC, the present invention provides a kind of base station again, is used for transmitting multimedia broadcast and multi-cast business data, referring to shown in Figure 3, it comprises: the redundant information generation unit, be used for the redundancy version parameters current according to its coverage cell, and generate the incremental redundancy information bit of respective version.Described redundant information generation unit generates the incremental redundancy information bit of respective version in the mode of cascade rate-matched again after the Turbo coding.
Cooperate above-mentioned RNC, the present invention provides a kind of subscriber equipment again, and it has the function of existing subscriber equipment, and referring to shown in Figure 4, it also comprises: redundancy versions acquiring unit and soft merge cells.
Described redundancy versions acquiring unit is used for obtaining from the RRC message of receiving the redundancy version information of the signal that corresponding neighbor cell sends.
Described soft merge cells is used for the redundancy version information obtained according to described redundancy versions acquiring unit, and the signal of receiving is carried out soft merging.
Use above-mentioned RNC and subscriber equipment, constituted wireless network of the present invention.
Use said apparatus and wireless network, the invention provides the method for a kind of multimedia broadcasting and multicast service transmission,, comprise following key step referring to shown in Figure 5:
S1, RNC are each neighbor cell configuring redundancy version.
S2, determine neighbor cell.
S3, adjacent cell transmission signals.
S4, subscriber equipment received signal, and carry out soft merging.
S5, the signal after the soft merging is decoded.
Below specifically describe the inventive method by two examples.
Method example one: the redundancy versions of each neighbor cell has nothing in common with each other.
S101, RNC are each cell configuration redundancy versions.
RNC of the present invention is each cell configuration redundancy versions of its control by described redundancy versions controlled function unit, and by NBAP (Node B Application Part, node B application part) and/or RNSAP (Radio Network Subsystem Application Part, the wireless subsystem applying portion) sends redundancy versions (RV, Redundancy Version) parameter to corresponding each sub-district.
S102, subscriber equipment are determined neighbor cell, and the redundancy versions of knowing neighbor cell.
Referring to shown in the table one, the RRC message generation unit is the redundancy version information of each cell configuration according to redundancy versions controlled function unit, in the RRC message " MBMS NEIGHBOURING CELLP-T-M RB INFORMATION " that generates, increase new information unit (IE, Information Element), specifically in IE " Neighbouring cell ' s S-CCPCH list ", increase IE " RV Configuration ", the span of this IE is 0～7 integer, subscriber equipment is used to the redundancy versions of indicating respective cell to adopt, so that can obtain to carry out the redundancy version information of S-CCPCH channel that corresponding merging receives the carrying MBMS business datum of required neighbor cell.
| Information Element/Group name | Need | Multi | Type and reference | Semantics description | Version | |
| Message type | MP | Message Type | REL-6 | |||
| Neighbouring cell identity | MP | Integer (0..<max CellMeas -1>) | The intra-frequency cell id of the cell obtained from the IE ′Intra-frequency Cell Info list′in SIB 11. | REL-6 | ||
| Neighbouring cell’s S- | MP | 1 to <maxSC CPCH> | REL-6 | |||
| >Secondary CCPCH info | MP | MBMS Common PhyCh identity 10.3.9a.2 | S-CCPCH configuration used in neighbouring cell.Refers to a configuration in the common RB info of the current cell | REL-6 | ||
| >Secondary CCPCH Power Offset Difference | MD | Integer (-6，-3，3， 6) | Difference(Pn-Of)between the S-CCPCH power offset(Pn)of the neighboring cell S-CCPCH and an arbitrary offset(Of).An arbitary offset(Of)is specific to the current cell and the same for all its neighbouring cells，in dB. Default value is 0. Note 3 and 4. | REL-6 | ||
| >L1 combining | OP | L2-combinihg applies if the IE is absent | REL-6 | |||
| The configuration of RV Configuration redundancy versions | OP is optional | Integer (0..7) integer (0..7) | Partial IR based combining applies if this IE is present adopts the merging based on the part incremental redundancy when this IE occurs | REL-7 the 7th version | ||
| >>CHOICE mode | MP | REL-6 | ||||
| >>>FDD | REL-6 | |||||
| >>>>MBMS Soft Combining Timing Offset | MP | MBMS Soft Combinin g Timing Offset 10.3.9a.1 0a | Timing offset applied in the CFN calculation in subclause 8.5.15.5 | REL-6 | ||
| >>>>MBMS transmission time difference | MP | Integer (0..3) | Indicates the time difference between the TTIs on the current and the neighbouring cell’s SCCPCH that can be L1- combined | REL-6 | ||
| >>>>MBMS L1 combining schedule | OP | MBMS L1 combining schedule 10.3.9a.7 | If included partial layer 1 combining applies，in which case this IE indicates when L1- combining applies.If the IE is absent，L1 combining applies continuously | REL-6 | ||
| >>>TDD | (no data) | REL-6 | ||||
| >CHOICE L23 configuration | MP | REL-6 | ||||
| >>SameAs Current cell | Apart from the physical channel configuration and the MSCH configuration information，the same configuration as for the indicated S-CCPCH used in the current cell applies.The MSCH is mapped on the same transport channel as in the current cell. | REL-6 | ||||
| >>>Current cell′s S-CCPCH | MP | MBMS Current cell S-CCPCH identity 10.3.9a.5 | Reference to the S-CCPCH in the current cell which uses exaclty the same configuration(excluding MSCH configuration). | REL-6 |
| Information Element/Group name | Need | Multi | Type and reference | Semantics description | Version | |
| >>>MSCH configuration information | OP | MSCH configurat ion informatio n 10.3.9a.1 6 | REL-6 | |||
| >>Different | REL-6 | |||||
| >>>TrCh information for common for all TrCh | MD | MBMS Common CCTrCh identity 10.3.9a.1 | Refers to a(TFCS)configuration in the common RB info The default value of the TFCS is specified in subclause 14.10.1 | REL-6 | ||
| >>>TrCH | MP | 1 to <maxFA CHPCH > | List of FACH transport channels carrying one or more MTCH and optionally one MSCH | REL-6 | ||
| >>>>TrCh information | MP | MBMS Common TrCh identity 10.3.9a.4 | Refers to a(TFS)configuration in the common RB info | REL-6 | ||
| >>>>TrCh combining status | MP | BOOLEA N | Value TRUE means that TrCh combining is used for this transport channel(TDD only). |
REL-6 | ||
| >>>>RB | OP | 1 to <maxRB perTrCh > | The IE is only present for the radio bearers for which selection (FDD)or transport channel(TDD) combining applies. | REL-6 | ||
| >>>>>RB information | MP | MBMS p-t-m RB informatio n 10.3.9a.7 a | REL-6 | |||
| >>>>MSCH configuration information | OP | MSCH configurat ion informatio n 10.3.9a.1 6 | Included if the TrCH carries MSCH | REL-6 |
Subscriber equipment of the present invention receives in order to carry out soft merging mode, need to receive " the MBMS NEIGHBOURING CELL P-T-M RB INFORMATION " information in the relevant RRC message, from this information, obtain to carry out the configuration information of S-CCPCH channel that corresponding merging receives the carrying MBMS business datum of required neighbor cell; If the signal to noise ratio of the downlink common pilot of related cell surpasses default threshold value, judge that then this sub-district is a neighbor cell.
Subscriber equipment of the present invention obtains the redundancy version information of the S-CCPCH channel of the carrying MBMS business datum of carrying out the required neighbor cell of corresponding merging reception also by built-in redundancy versions acquiring unit from this information.
S103, adjacent cell transmission signals.
In the 3GPP existing protocol, bearing point transmits on the FACH transmission channel to the MTCH of the MBMS business of multiple spot.At present, the channel coding method of Turbo coding is adopted in the support of FACH channel.Therefore need in existing FACH chnnel coding and multiplexing flow process, provide one to be used to produce the functional unit of specifying the redundancy versions signal, to generate the encoded data bits of each sub-district respective redundant version.
Base station of the present invention is with its built-in redundant information generation unit, the redundancy versions current (by above-mentioned redundancy versions controlled function configuration of cells) according to the sub-district of its covering, and utilize the Turbo coding mode of cascade rate-matched (punching) afterwards, generate the incremental redundancy information bit of respective version.
Based on the generative process of the different editions redundant information of Turbo coding as shown in Figure 6: the Turbo encoder bit rate is 1/3, and convolution coder 1, convolution coder 2 and inner interleaver have been formed the Turbo code primary structure among the figure, if input traffic is X=(x
1, x
2... x
N), then the dateout of this Turbo encoder comprises systematic code code stream X=(x
1, x
2... x
N), 0, redundant information code stream Y
1=(y
11, y
12... y
1N), Y
2=(y
21, y
22... y
2N), Z
2=(z
21, z
22... z
2N), Z
1=(z
11, z
12... z
1N), select different bits in these output code flows by perforation unit, can produce the different coded data block of redundant information bits as required.For example, establishing the signal that needs to transmit is (x
1, x
2, x
3, x
4, x
5, x
6), then first sub-district sends P
1=(x
1, x
2, x
3, y
13, x
4, x
5, x
6, z
16), second sub-district sends P
2=(x
1, x
2, x
3, y
23, x
4, x
5, x
6, z
26), can see that although the code check of two sub-district transmissions is 3/4, the redundant information that sends is different.
In this example, at same Transmission Time Interval (TTI, Transmission Time Interval), the point that adjacent different districts sends is in the broadcasting and multi-cast business data encoding block (signal) of multiple spot, comprise identical systematic bits, also comprise the incremental redundancy information bit that version has nothing in common with each other.
The length of the incremental redundancy information bit that the point that each neighbor cell sends among the present invention has nothing in common with each other to the broadcasting of multiple spot and version that multi-cast business data encoding block (signal) is comprised can identical (being that the point that each neighbor cell sends is identical to the broadcasting of multiple spot and the code check of multi-cast business data encoding block), also can difference (point that is each neighbor cell transmission is different with the code check of multi-cast business data encoding block to the broadcasting of multiple spot).
S104, subscriber equipment received signal, and carry out soft merging.
Subscriber equipment can receive only the sub-district (as the strongest sub-district of pilot tone) in the neighbor cell carrying this put the broadcasting of multiple spot and the common down channel of multi-cast business data, and independent decoding; Also can receive simultaneously a plurality of or whole neighbor cells carrying this put the broadcasting of multiple spot and the common down channel of multi-cast business data.
Referring to shown in Figure 7, the soft merge cells in the subscriber equipment adopts following strategy to finish soft merging.
Because the redundancy versions of each neighbor cell has nothing in common with each other in this example, so subscriber equipment at first carries out multipath reception and merging respectively to the signal of each sub-district of receiving; Secondly, the systematic bits in the signal of each sub-district is separated with the incremental redundancy information bit; Thereafter, the systematic bits in each cell signal being carried out high specific merges; At last, the redundancy version information of each sub-district of knowing according to step S102, the systematic bits combination after incremental redundancy information bit and high specific merged.Signal after the soft merging has comprised the systematic bits after the high specific merging, and the incremental redundancy information bit of the respective version in each cell signal of receiving.
S105, the signal after the soft merging is decoded.
Signal after the soft merging is carried out combined decoding, owing to utilized the different incremental redundancy information bits in each cell signal, reduced the code rate of the signal after the soft merging, therefore can obtain higher coding gain, thereby improve the receptivity of MBMS business.
Method example two: the version part of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends is identical, and the remainder difference.
S201, RNC are each cell configuration redundancy versions.(S101 is identical with step)
S202, subscriber equipment are determined neighbor cell, and the redundancy versions of knowing neighbor cell.(S102 is identical with step)
S203, adjacent cell transmission signals.
The process and method example one of the redundant information bits of each sub-district generation respective version is identical.
In this example, at same Transmission Time Interval (TTI, Transmission Time Interval), the point that neighbor cell sends is in the broadcasting and multi-cast business data encoding block (signal) of multiple spot, comprise identical systematic bits, it is identical also to comprise the part version, and the different incremental redundancy information bit of remainder version.
The length of the incremental redundancy information bit that the point that each neighbor cell sends among the present invention has nothing in common with each other to the broadcasting of multiple spot and version that multi-cast business data encoding block (signal) is comprised can identical (being that the point that each neighbor cell sends is identical to the broadcasting of multiple spot and the code check of multi-cast business data encoding block), also can difference (point that is each neighbor cell transmission is different with the code check of multi-cast business data encoding block to the broadcasting of multiple spot).
S204, subscriber equipment received signal, and carry out soft merging.
Subscriber equipment can receive only the sub-district (as the strongest sub-district of pilot tone) in the neighbor cell carrying this put the broadcasting of multiple spot and the common down channel of multi-cast business data, and independent decoding; Also can receive simultaneously a plurality of or whole neighbor cells carrying this put the broadcasting of multiple spot and the common down channel of multi-cast business data.
Referring to shown in Figure 8, the soft merge cells in the subscriber equipment adopts following strategy to finish soft merging.
Because the version part of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends in this example is identical, and the remainder difference, so subscriber equipment at first carries out multipath reception and merging respectively to the signal of each sub-district of receiving; Secondly, the signal that will have the same redundant version carries out the high specific merging first time; Thereafter, each road signal being carried out systematic bits respectively separates with redundant information bits; Afterwards, to have systematic bits in the signal of different redundancy versions carries out second time high specific and merges, the signal of described different redundancy versions comprises: the above-mentioned signal that redundancy versions is identical carries out the signal after high specific merges, and the signal that comprises different redundancy versions in the cell signal received of subscriber equipment; At last, the redundancy version information of each sub-district of knowing according to step S202 is with incremental redundancy information bit and systematic bits combination after high specific merges for the second time.Signal after the soft merging has comprised the systematic bits after high specific merges, and the incremental redundancy information bit (the incremental redundancy information bit of identical version is weighted merging when high specific merges in the first time) of different editions in each cell signal of receiving.
S205, the signal after the soft merging is decoded.(S105 is identical with step)
Though embodiment of the present invention are that the MBMS business with 3GPP is that object is described, but, what the present invention proposed arrives the transmission plan of multicast communication at the point of multicast and/or broadcasting service, be applicable to other multicast and/or broadcast system too, as the BCMCS among the 3GPP2 (Broadcast and MulticastService) system etc.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1, the method for a kind of multimedia broadcasting and multicast service transmission is applied to the synchronous situation of each neighbor cell, it is characterized in that, comprises the following steps:
A, at same Transmission Time Interval, in broadcasting that all neighbor cells send and the multicast service signal, comprise the incremental redundancy information bit of at least two kinds of versions;
B, subscriber equipment carry out soft merging according to redundancy version information with the signal of receiving.
2, the method for claim 1 is characterized in that, in the described steps A, the version of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends has nothing in common with each other.
3, method as claimed in claim 2 is characterized in that, described step B comprises the following steps:
B11, subscriber equipment carry out multipath respectively to the signal of each sub-district of receiving and merge;
Systematic bits in B12, each cell signal that will receive is carried out high specific and is merged;
The redundancy version information of each cell signal that B13, basis are received after the systematic bits combination after incremental redundancy information bit and the high specific merging, is carried out combined decoding, to finish the reception of signal.
4, the method for claim 1 is characterized in that, in the described steps A, the version part of the incremental redundancy information bit that comprises in the signal that each neighbor cell sends is identical, and the remainder difference.
5, method as claimed in claim 4 is characterized in that, described step B comprises the following steps:
B21, subscriber equipment carry out multipath respectively to the signal of each sub-district of receiving and merge;
B22, the signal that will have a same redundant version carry out high specific and merge;
B23, will have systematic bits in the signal of different redundancy versions and carry out high specific and merge;
B24, according to the redundancy version information of each cell signal of receiving, after the systematic bits that incremental redundancy information bit and step B23 are obtained makes up, carry out combined decoding, to finish the reception of signal.
6, method as claimed in claim 5, it is characterized in that, the signal with different redundancy versions described in the step B23 comprises: among the step B22 signal with same redundant version is carried out after high specific merges, the signal of output, and the signal that has different redundancy versions in each cell signal of receiving.
As each described method of claim 1 to 6, it is characterized in that 7, the length of the incremental redundancy information bit that signal comprised of the different redundancy versions that each neighbor cell sends is identical, or different.
8, as each described method of claim 1 to 6, it is characterized in that, the signal that subscriber equipment is received is the signal that send arbitrary sub-district in described each neighbor cell, perhaps the signal that sends for a plurality of sub-districts in described each neighbor cell, the perhaps signal that sends for whole neighbor cells.
As each described method of claim 1 to 6, it is characterized in that 9, described each neighbor cell is determined by following steps:
-subscriber equipment obtains the configuration information of the S-CCPCH Secondary Common Control Physical Channel S-CCPCH of the bearing multimedia broadcast of related cell and multicast service MBMS data from the RRC message of receiving;
The signal to noise ratio of the downlink common pilot of-Ruo related cell surpasses default threshold value, judges that then this sub-district is a neighbor cell.
10, a kind of radio network controller is applied to multimedia broadcasting and multicast service transmission, it is characterized in that, comprising:
Redundancy versions controlled function unit is used to each neighbor cell to mate corresponding redundancy versions, so that comprise the incremental redundancy information bit of respective version in the signal that each neighbor cell sends;
The RRC message generation unit is used to generate the RRC message that carries redundancy version information, and cooperates described redundancy versions controlled function unit, and the RRC message that generates is sent from corresponding sub-district.
11, radio network controller as claimed in claim 10, it is characterized in that described redundancy versions controlled function unit mates corresponding redundancy version parameters by base-station node B applying portion NBAP and/or wireless subsystem applying portion RNSAP for each neighbor cell.
12, a kind of subscriber equipment is used for receiving multimedia broadcast and multi-cast business data, it is characterized in that, comprising:
The redundancy versions acquiring unit is used for obtaining from the RRC message of receiving the redundancy version information of the signal that corresponding neighbor cell sends;
Soft merge cells is used for the redundancy version information obtained according to described redundancy versions acquiring unit, and the cell signal of receiving is carried out soft merging.
13, a kind of base station is used for transmitting multimedia broadcast and multi-cast business data, it is characterized in that, comprising:
The redundant information generation unit is used for the redundancy version parameters current according to its coverage cell, generates the incremental redundancy information bit of respective version.
14, base station as claimed in claim 13 is characterized in that, described redundant information generation unit generates the incremental redundancy information bit of respective version in the mode of cascade rate-matched again after the Turbo coding.
15, a kind of wireless network is applied to multimedia broadcasting and multicast service transmission, it is characterized in that, also comprises:
Radio network controller is used to each neighbor cell to mate corresponding redundancy versions, and carries redundancy version information in the RRC message that issues;
The base station is used for the redundancy version parameters current according to its coverage cell, generates the incremental redundancy information bit of respective version;
Subscriber equipment is used to obtain the redundancy version information of the signal that each neighbor cell sends, and in view of the above the cell signal of receiving is carried out soft merging.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100573507A CN101034921B (en) | 2006-03-10 | 2006-03-10 | Method, network and device for multi-media broadcast and multi-cast service transmission |
| PCT/CN2007/000658 WO2007104231A1 (en) | 2006-03-10 | 2007-03-01 | A multimedia broadcast/multicast service communication method, network and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100573507A CN101034921B (en) | 2006-03-10 | 2006-03-10 | Method, network and device for multi-media broadcast and multi-cast service transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101034921A true CN101034921A (en) | 2007-09-12 |
| CN101034921B CN101034921B (en) | 2011-09-14 |
Family
ID=38509038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100573507A Active CN101034921B (en) | 2006-03-10 | 2006-03-10 | Method, network and device for multi-media broadcast and multi-cast service transmission |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101034921B (en) |
| WO (1) | WO2007104231A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414953B (en) * | 2007-10-19 | 2011-05-04 | 上海华为技术有限公司 | Method, base station, relay station and terminal for sending relay system data |
| CN102405612A (en) * | 2011-06-28 | 2012-04-04 | 华为技术有限公司 | Method and base station for obtaining combined gains |
| CN102439889A (en) * | 2011-10-14 | 2012-05-02 | 华为技术有限公司 | Method and system for improving multicast reception gain |
| CN104811976A (en) * | 2015-04-02 | 2015-07-29 | 四川大学 | Method and base station for improving group service airinterface analyzing capacity |
| CN106464314A (en) * | 2014-03-31 | 2017-02-22 | 华为技术有限公司 | System and method for resource allocation for sparse code multiple access transmissions |
| US10531432B2 (en) | 2015-03-25 | 2020-01-07 | Huawei Technologies Co., Ltd. | System and method for resource allocation for sparse code multiple access transmissions |
| US10701685B2 (en) | 2014-03-31 | 2020-06-30 | Huawei Technologies Co., Ltd. | Method and apparatus for asynchronous OFDMA/SC-FDMA |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065523B (en) * | 2009-11-18 | 2014-03-12 | 华为技术有限公司 | Method for transmitting information according to target coding rate and base station |
| EP3474604B1 (en) | 2015-04-17 | 2020-09-09 | Panasonic Intellectual Property Corporation of America | Coverage enhancement level signalling and efficient packing of mtc system information |
| CN112640492B (en) * | 2018-10-30 | 2022-05-10 | 华为技术有限公司 | Method and device for transmitting multicast service |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717887A (en) * | 2002-10-25 | 2006-01-04 | 高通股份有限公司 | Method and system for code combining in a communication system |
| KR20050013451A (en) * | 2003-07-28 | 2005-02-04 | 삼성전자주식회사 | Apparatus and method for determining soft handover in a cdma mobile communication system providing mbms service |
| CN1735079A (en) * | 2004-08-09 | 2006-02-15 | 皇家飞利浦电子股份有限公司 | Space channel coding and decoding method and device for realizing multipath parallel transmission |
-
2006
- 2006-03-10 CN CN2006100573507A patent/CN101034921B/en active Active
-
2007
- 2007-03-01 WO PCT/CN2007/000658 patent/WO2007104231A1/en active Application Filing
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414953B (en) * | 2007-10-19 | 2011-05-04 | 上海华为技术有限公司 | Method, base station, relay station and terminal for sending relay system data |
| CN102405612A (en) * | 2011-06-28 | 2012-04-04 | 华为技术有限公司 | Method and base station for obtaining combined gains |
| WO2012103715A1 (en) * | 2011-06-28 | 2012-08-09 | 华为技术有限公司 | Method and base station for obtaining combining gain |
| CN102405612B (en) * | 2011-06-28 | 2014-07-09 | 华为技术有限公司 | Method and base station for obtaining combined gains |
| CN102439889A (en) * | 2011-10-14 | 2012-05-02 | 华为技术有限公司 | Method and system for improving multicast reception gain |
| CN102439889B (en) * | 2011-10-14 | 2014-04-02 | 华为技术有限公司 | Method and system for improving multicast reception gain |
| CN106464314A (en) * | 2014-03-31 | 2017-02-22 | 华为技术有限公司 | System and method for resource allocation for sparse code multiple access transmissions |
| CN106464314B (en) * | 2014-03-31 | 2019-11-15 | 华为技术有限公司 | The device and method of resource allocation for the access transmission of Sparse Code multiple access |
| US10701685B2 (en) | 2014-03-31 | 2020-06-30 | Huawei Technologies Co., Ltd. | Method and apparatus for asynchronous OFDMA/SC-FDMA |
| US10531432B2 (en) | 2015-03-25 | 2020-01-07 | Huawei Technologies Co., Ltd. | System and method for resource allocation for sparse code multiple access transmissions |
| CN104811976A (en) * | 2015-04-02 | 2015-07-29 | 四川大学 | Method and base station for improving group service airinterface analyzing capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007104231A1 (en) | 2007-09-20 |
| CN101034921B (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101034921B (en) | Method, network and device for multi-media broadcast and multi-cast service transmission | |
| TWI361587B (en) | Network signaling for point-to-multipoint service over single frequency network mode | |
| CN1270548C (en) | Equipment and method for supply multimedia broadcasting/multi-broadcasting service for mobile communication system | |
| US20070053336A1 (en) | Method and apparatus for performing inter-frequency measurements | |
| CN101569213B (en) | Method of providing data broadcast/multicast | |
| CN1643820A (en) | Multicast service providing method in mobile communication system | |
| US20060176838A1 (en) | Transmission of control information according to grouping of services in a mobile communication system | |
| CN101032185A (en) | Method and apparatus for partial combining of multimedia broadcast/multicast service data | |
| CN1910839A (en) | Apparatus and method for establishing radio bearer of mobile terminal | |
| JP5199310B2 (en) | Method and apparatus for processing MBMS dynamic scheduling information | |
| CN1486546A (en) | Method and apparatus for multiplexing high-speed packet data transmission with voice/data transmission | |
| AU2005253493B2 (en) | Point-to-multipoint service medium access control entity structure | |
| EP1478198B1 (en) | Method and apparatus for performing inter-frequency measurements | |
| JP2007081574A (en) | Data transmission system and method, base station and mobile terminal | |
| CN1599991A (en) | Method for processing shared sub-packets in a communication system | |
| CN101039459A (en) | Method and apparatus for multimedia broadcast and multicast service information | |
| JP4987728B2 (en) | Data block communication method in wireless communication system | |
| CN109729499A (en) | The voice group call service processing method and system of LTE trunked communication system | |
| EP2798755B1 (en) | Multicast service method and apparatus in mobile communication system | |
| CN1905398A (en) | Broadcasting/multicasting service transmitting method for TDD system | |
| CN101299824B (en) | Method, system and subscriber terminal for acquiring multimedia broadcast and multicast service data | |
| CN101047878A (en) | Method for using single slot network transceiving MBMS in TD-SCDMA | |
| CN1774124A (en) | Business control information transmitting method in multimedia broadcasting/group broadcasting service | |
| CN1951063A (en) | Optimised iub transport | |
| CN100562149C (en) | Adopt the system of single slot network transceiving MBMS among the TD-SCDMA |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211228 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right |