CN101296028A - Method and device for special carrier transmitting multimedia broadcast multicast service, and transmission system - Google Patents
Method and device for special carrier transmitting multimedia broadcast multicast service, and transmission system Download PDFInfo
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- CN101296028A CN101296028A CNA2007100987244A CN200710098724A CN101296028A CN 101296028 A CN101296028 A CN 101296028A CN A2007100987244 A CNA2007100987244 A CN A2007100987244A CN 200710098724 A CN200710098724 A CN 200710098724A CN 101296028 A CN101296028 A CN 101296028A
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Abstract
The invention discloses a method for transmitting multimedia broadcast multicast services based on a special carrier. The method comprises the following steps of: configuring the systematic information of MBMS and the control information of the MBMS into a carrier; sending carrier information configured with the systematic information and the control information of the MBMS; sending MBMS data; and intercepting the determined carriers according to the received carrier information, obtaining configuration information of the MBMS according to the intercepted systematic information and the control information of the MBMS, and receiving the MBMS data on the special carriers by users. The invention also discloses a device and system for realizing the method. The invention realizes the binding of the MBMS on the special carriers and accelerates the transmission speed of the MBMS. By intercepting the carriers bearing control signals directly, UE realizes the receiving of services, reducing the meaningless switching of interception and achieving the purpose of electricity saving.
Description
Technical field
The present invention relates to mobile communication system transmitting multimedia broadcast multicast service (MBMS, MultimediaBroadcast Multicast Service) technology relates to method and apparatus and MBMS transmission system based on special carrier MBMS transmission data or rather.
Background technology
In order to effectively utilize the mobile communications network resource, the MBMS of mobile communications network has been proposed among 3G (Third Generation) Moblie global standards tissue (3GPP) Release6, thereby in mobile communications network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, the sharing of the interface resource of especially eating dishes without rice or wine.
Fig. 1 is for supporting the wireless network architecture schematic diagram of broadcasting multicast service, as shown in Figure 1, among the existing 3GPP, support the wireless network architecture of broadcasting multicast service to comprise broadcasting multicast service server (BM-SC) 101, BM-SC 101 is by Gmb interface or Gi interface and critical point GPRS Support Node (GGSN, GatewayGPRS Support Node) 102 link to each other, and a BM-SC 101 can link to each other with a plurality of GGSN 102; GGSN 102 links to each other by Gn/Gp interface and Serving GPRS Support Node (SGSN, Serving GPRSSupport Node) 103, and a GGSN 102 can link to each other with a plurality of SGSN 103; SGSN 103 can pass through Iu interface and universal mobile telecommunications system (UMTS, Universal Mobile TelecommunicationSystem) land radio access web (UTRAN) 104 links to each other, UTRAN 104 links to each other with user terminal (UE) 106 by the Uu interface then, SGSN 103 also can strengthen wireless access network (GERAN) 105 by Iu/Gb interface and global system for mobile communications (GSM) and link to each other, and GERAN 105 links to each other with UE 107 by Um Interface then.Wherein, GGSN and SGSN belong to the node in the core net in the wireless network (CN).
The network configuration that provides from Fig. 1 as can be seen, in order to support the MBMS business, in 3-G (Generation Three mobile communication system), increased mobile network functional entity-broadcast multicast service center, be BM-SC, described BM-SC is content provider's a inlet, be used for authorizing and initiating the MBMS business, and plan transmits the MBMS content to schedule at mobile network.In addition, on functional entitys such as UE, UTRAN, GERAN, SGSN, GGSN, increased the function relevant with MBMS.
The MBMS that 3GPP proposes 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, and this has complied with the trend of following mobile data development undoubtedly.In order further to improve the transmission rate of MBMS data, 3GPP is at present just at Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) and 3.84Mcps time division duplex (TDD, Time Division Duplex) proposed to adopt special-purpose Independent Carrier Wave to carry the scheme of MBMS, promptly build a frequency layer that is exclusively used in MBMS transmission in the existing universal mobile telecommunications system area of coverage in addition, user terminal has the ability that receives common carrier wave and special carrier MBMS transmission simultaneously.
Propose among the 3GPP Release7TR 25.905, the MBMS special carrier system structurally can adopt traditional system architecture, also can adopt new system architecture.At present, there are three kinds of possible system architectures, below describe in detail respectively.
Fig. 2 is one of schematic diagram of MBMS data traffic transmission system configuration.As shown in Figure 2, only show the system architecture of MBMS data division among Fig. 2, it includes SGSN12 that the MBMS data are provided, supports the UTRAN11 and the UE 10 of MBMS data service and common 3G business (clean culture unicast business) simultaneously, be connected by the Uu interface between UE 10 and the UTRAN 11, be connected by the Iu interface between UTRAN 11 and the SGSN12.In this system configuration, the MBMS of special carrier and the business of common carrier wave adopt identical network, and existing UMTS core net and Access Network are upgraded to increase to get final product.
Fig. 3 be MBMS data traffic transmission system configuration schematic diagram two.As shown in Figure 3, it comprises SGSN 12, the UTRAN 14 that supports the MBMS data service that the MBMS data are provided, UTRAN 13 and the UE 10 that supports common 3G business (unicast business).Be connected by the Uu interface between UE 10 and UTRAN 14 and the UTRAN13, be connected by the Iu interface between UTRAN 14 and UTRAN 13 and the SGSN 12, be connected by the Iur interface between UTRAN 14 and the UTRAN 13, to carry out the control Signalling exchange of general service and MBMS data service, make its service interworking.Compare with structure shown in Figure 2, the system shown in Figure 3 structure has adopted different Access Networks, has promptly used separately and has supported the UTRAN 14 of MBMS data service and the UTRAN 13 of general service.
Fig. 4 be MBMS data traffic transmission system configuration schematic diagram three.As shown in Figure 4, it comprises SGSN 12, the UTRAN 14 that supports the MBMS data service that the MBMS data are provided, UTRAN 13 and the UE 10 that supports common 3G business (unicast business).Be connected by the Uu interface between UE 10 and UTRAN 14 and the UTRAN13, be connected by the Iu interface between UTRAN 14 and UTRAN 13 and the SGSN 12.Compare with structure shown in Figure 3, do not have the Iur interface in the system shown in Figure 4 structure between UTRAN 14 and the UTRAN13, just mean that also general service adopts different access networks with MBMS, need not the signaling exchange, promptly to two kinds of independent networkings of business between the Access Network.
3GPP does not carry out standardization to the MBMS system configuration as yet in Release7 at present, but in 3GPPRelease7 TR 25.905, describe the MBMS special carrier mechanism that is applicable to Wideband Code Division Multiple Access (WCDMA) (WCDMA) and high chip-rate (HCR) TDD system in detail, this special carrier can be descending carrier or the HCR TDD carrier wave (all being descending) of WCDMA.Whether whether for identifying a carrier wave is special carrier, propose to utilize the system information block SIB3 transmission in the system information to support the MBSFN of special carrier to indicate.If a carrier wave is the MBMS data service that is specifically designed to transmission single frequency network (SFN) pattern, on system information block SIB5, transmit its specific MBMS point so to multiple spot control channel (MCCH, the information such as scrambler configuration of configuration MBMS point-to-multipoint Control Channel) and MBMS point-to-multipoint service channel (MTCH, MBMS point-to-multipoint Traffic Channel).Information transmitted has comprised the resource configuration state that is used for the MBMS data traffic transmission basically on SIB3 and SIB5.Such scheme also requires by SIB11 transmission dedicated carrier frequency tabulation and inter-Freq and the tabulation of intra-Freq measurement cell information.Except SIB3, SIB5 and SIB11, does not transmit on the MBMS special carrier other common sub-districts SIB block of information of transmission at present.
In order to simplify the MCCH signaling of special carrier, make no longer directly uplink of special carrier, MBMS transmission ACCESS INFORMATION no longer in the system information.Because MBMS signal at the special carrier transmission, UE need carry out physical layer process as common multipath signal with adjacent area MBSFN multipath signal when receiving data-signal, therefore no longer require the MCCH transmission to be used for multipath and merge purpose adjacent area radio bearer (RB) information, i.e. MBMS NEIGHBOURING CELL P-T-M RB INFORMATION.
A MBMS Independent Carrier Wave system can support a plurality of MBMS SFN networks.Present existing scheme shows can support that MBMS notifies mutually between a plurality of SFN networks, promptly realizes the binding of so-called MBMS notice.But existing scheme is not supported between a plurality of SFN networks or the control signaling between the frequency layer is shared.
Corresponding to above-mentioned MBMS special carrier technical scheme, from receiving the angle of the MBMS business on the special carrier, the cell set (cluster) that user terminal UE can only cover with SFN is that unit carries out resident and selection/reselection.UE is after knowing the dedicated frequency layer of a MBMS business, just can search for this MBMS dedicated frequency layer pointedly, and after realizing system synchronization, read wherein broadcast message, just can intercept MCCH according to broadcast message, determine how to receive oneself signatory MBMS data service according to MCCH control signaling at last.
What above-mentioned MBMS special carrier scheme adopted is the SFN transmission mode, improved the efficiency of transmission of MBMS business to a certain extent, but on system design view, it requires MBMS special carrier system and common carrier system to work alone basically, UE need read the ability that system information on the MBMS special carrier just can be learnt special carrier, therefore need control information on the UE real-time sense special carrier just can learn traffic state on it, be unfavorable for reducing the power consumption of UE.Such scheme is when being used for the stack of a plurality of special carriers and covering, and UE will read system information and the control signaling on a plurality of Independent Carrier Waves, says it is not optimum from terminal complexity, energy-saving mode and system resource overhead.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and apparatus based on special carrier MBMS transmission data, the system information and the control information of MBMS business can be transmitted by a carrier wave, reduced UE and intercepted the quantity of carrier wave, reach purpose of power saving.
Another object of the present invention is to provide a kind of system of transmitting multimedia broadcast multicast service,, realize the transmission of MBMS business easily changing under the existing transmission system situation seldom.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method based on special carrier transmitting multimedia broadcast multicast service comprises:
The special carrier binding is used for the transmission of multimedia broadcast-multicast service MBMS.
Wherein, special carrier binding and MBMS transmission specifically comprise:
MBMS system information and MBMS control information are configured in the carrier wave;
The carrier information of MBMS system information and control information carrier wave is disposed in transmission; And
Send the MBMS data.
Said method also comprises:
The user intercepts determined carrier wave according to the carrier information that receives, and obtains the configuration information of MBMS business according to MBMS system information that listens to and control information, and receives the MBMS data on the special carrier.
Wherein, described carrier information is sent by the general service carriers carry.
Wherein, described MBMS system information and control information are configured to the MBMS special carrier.
Wherein, described MBMS system information and control information are configured to the general service carrier wave.
Wherein, for carrier wave configuration MBMS system information and control information are that unit carries out with the sub-district, in each sub-district, select the carrier wave of configuration all identical.
Wherein, the user intercepts carrier wave and adopts discontinuous reception DRX mode.
Wherein, described MBMS system information is by system information block SIB carrying transmission.The system information block of carrying MBMS system information comprises SIB5 and Master Information Block at least.
Wherein, described MBMS control information comprises that MBMS change business information, MBMS do not change business information, MBMS general information, the public point to multi-point wireless beared information of MBMS, MBMS current area P-T-M wireless loading information and MBMS neighbor cell P-T-M wireless loading information.
A kind of device based on special carrier transmitting multimedia broadcast multicast service comprises:
The bearing carrier wave dispensing unit is used for MBMS system information and control information are configured to a carrier wave;
The bearing carrier wave information transmitting unit is used to send the information of bearing carrier wave carrier wave that dispensing unit disposes; And
The MBMS data transmission unit is used to send the MBMS data.
Said apparatus also comprises:
The MBMS receiving element is used for intercepting this carrier wave according to the carrier information that receives, and determines the MBMS service configuration information according to MBMS system information that listens to and control information, and receives the MBMS data on the special carrier.
Wherein, described bearing carrier wave information transmitting unit is with general service carriers carry carrier information, and is sent to the MBMS receiving element.
Wherein, described bearing carrier wave dispensing unit is configured to the MBMS special carrier with MBMS system information and control information.
Wherein, described bearing carrier wave dispensing unit is configured to the general service carrier wave with MBMS system information and control information.
Wherein, described bearing carrier wave dispensing unit is that carrier wave configuration MBMS system information and control information are that unit carries out with the sub-district, selects the carrier wave of configuration all identical in each sub-district.
Wherein, described MBMS receiving element is intercepted carrier wave and is adopted discontinuous reception DRX mode.
Wherein, described MBMS system information is by system information block SIB carrying transmission.
Wherein, the system information block of carrying MBMS system information comprises SIB5 and Master Information Block at least.
A kind of system of transmitting multimedia broadcast multicast service, comprise core net CN, be used for the Node B of general service, the Node B that is exclusively used in MBMS and user terminal UE, described UE is connected to general service Node B and MBMS Node B by the Uu interface, and CN is connected to general service Node B and MBMS Node B.
A kind of system of transmitting multimedia broadcast multicast service, core net CN, be used for general service NodeB, be exclusively used in MBMS Node B, be used to control radio network controller (RNC), the user terminal UE of general service Node B and MBMS Node B, described RNC is connected in CN by the Iu interface, described general service Node B and MBMS Node B are connected in RNC by Iub interface, and described UE is connected to general service Node B and MBMS Node B by the Uu interface.
The present invention is based on the method and apparatus of special carrier transmitting multimedia broadcast multicast service, to the system configuration traffic carrier time, except the general service carrier wave, also dispose the MBMS special carrier, by a carriers carry, user terminal is intercepted the reception that can realize MBMS to the carrier wave of this bearing system information and control information with the needed system information of MBMS transmission and control information.MBMS system information and control information are bundled into together, have reduced the bit that these information take, make in the radio frames and can transmit more data, saved valuable frame resource.Can obviously reduce intercepting switching and intercepting frequency of user terminal, user terminal UE economize on electricity obviously.
In addition, MBMS system information and control information by a carriers carry after, remaining special carrier can all carry the MBMS business, obviously improves the efficiency of transmission of MBMS business.During particularly by above-mentioned MBMS system information of common carriers carry and control information, all special carriers of configuration all are used for only MBMS transmission business.Certainly according to actual needs, special carrier also can be used for transmitting a part of control information.
The system of transmitting multimedia broadcast multicast service proposes at above-mentioned transmission method and device among the present invention, common carrier network and the same set of core net of special carrier network using adopt integrated wireless accessing network structure promptly to adopt identical RNC to realize the transmission of general service and MBMS business; And the sub-district of supporting the common carrier network and the special carrier network coverage may be under the jurisdiction of different Node B, and this system group network economy and transfer of data are effective.Consider the continuous evolution of 3G system, the function of Node B is powerful day by day, and RNC can not re-use yet, and so more helps networking.
Description of drawings
Fig. 1 is for supporting the wireless network architecture schematic diagram of broadcasting multicast service;
Fig. 2 is one of schematic diagram of MBMS data traffic transmission system configuration;
Fig. 3 be MBMS data traffic transmission system configuration schematic diagram two;
Fig. 4 be MBMS data traffic transmission system configuration schematic diagram three;
Fig. 5 is the structural representation that the present invention is based on special carrier MBMS transmission device;
Fig. 6 is the flow chart that the present invention is based on special carrier MBMS transmission method;
Fig. 7 is the structural representation of the system of MBMS transmission of the present invention;
Fig. 8 is another structural representation of the system of MBMS transmission of the present invention.
Embodiment
Core concept of the present invention is: when the 3G system carries out MBMS data service transmission, with the sub-district is unit, the MBMS special carrier that disposes in this sub-district is bundled the MBMS transmission data, saved valuable Radio Resource, user terminal has reduced the switching between special carrier when intercepting the MBMS special carrier.Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated.
Fig. 5 is the structural representation that the present invention is based on special carrier MBMS transmission device.As shown in Figure 5, the device that the present invention is based on the special carrier MBMS transmission comprises: carrier wave dispensing unit 50, bearing carrier wave dispensing unit 51, bearing carrier wave information transmitting unit 52, MBMS transmitting element 54 and MBMS receiving element 53.Wherein, carrier wave dispensing unit 50 is used to dispose the carrier wave that the transmission data are used; Bearing carrier wave dispensing unit 51 is used for selecting a carrier wave as carrying MBMS system information and control information at the carrier wave of carrier wave dispensing unit 50 configurations, and soon MBMS system information and control information are configured in the carrier wave in the sub-district; The relevant information that bearing carrier wave information transmitting unit 52 is used for bearing carrier wave dispensing unit 51 has been disposed carrier wave is sent to the MBMS receiving element; MBMS transmitting element 54 is used for utilizing special carrier to send the MBMS data service; MBMS receiving element 53 is used for the configuration information according to MBMS system information that receives and control information acquisition MBMS business, and determine the special carrier of carrying MBMS data service according to these configuration informations, be synchronized to the MBMS data that receive behind this special carrier on it.Above-mentioned configuration information comprises gap information, channel information and modulation system etc.
When carrier wave dispensing unit 50 is finished the configuration of carrier wave, be unit, realize the configuration of MBMS special carrier and 3G general service carrier wave for each sub-district with the sub-district.Carrier wave dispensing unit 50 is general service carrier wave of cell configuration and at least one MBMS special carrier, according to the situation of system's available resources, and general 2 to 3 special carriers of each cell configuration.Correspondingly, bearing carrier wave dispensing unit 51 can be determined a system information and the control information that carrier wave carries MBMS in the carrier wave of carrier wave dispensing unit 50 configurations, is about to a plurality of special-purpose MBMS carrier waves and carries out descending binding and be used as the MBMS transmission.In the sub-district that an overloading covers frequently, BCCH, the MBMS point of only selecting carrying MBMS public information in this sub-district of carriers carry is to common signal channels such as multiple spot scheduling channel (MSCH, MBMS point-to-multipoint SchedulingChannel) and MCCH.Primary Common Control Physical Channel (PCCPCH for this selected carrier wave configuration MBMS transmission system information, Primary Common Control Physical Channel), and the MBMS control information is transmitted by the auxiliary publish control physical channel on this carrier wave (SCCPCH, SecondaryCommon Control Physical Channel).That is to say that necessary descending public control signaling channel is configured on the selected carrier wave, other special carriers are used for configuration service channel MTCH.
The carrier wave of carrying MBMS system information and control information can be common carrier wave, in this case, the PCCPCH of MBMS transmission system information is configured on the common carrier wave, the control information of MBMS is also by this common carriers carry, and the MBMS special carrier just can all be configured to Traffic Channel MTCH, MTCH is carried by auxiliary publish control physical channel, promptly all MBMS special carriers just can all dispose auxiliary publish control physical channel (SCCPCH, Secondary Common Control Physical Channel), certainly, except SCCPCH, these MBMS special carriers can also dispose other channel, as MBMS informing indication channel (MICH, MBMS notification Indicator Channel) etc.
The carrier wave of carrying MBMS system information and control information also can be a special carrier, in this case, special carrier configuration PCCPCH for carrying MBMS system information, the control information that MBMS is correlated with is also by this carriers carry, certainly, this carrier wave also can dispose MBMS bearer service channels MTCH simultaneously, and remaining MBMS special carrier configuration bearer service channels MTCH in the sub-district.For making system constitute single frequency network SFN, carrier wave dispensing unit 50 is that the number of carriers of all cell configuration in the system and carrier frequency etc. are identical, and bearing carrier wave dispensing unit 51 selects to be used for to carry MBMS system information and control information in each sub-district carrier wave is also all identical.The carrying MBMS system information that bearing carrier wave information transmitting unit 52 will be confirmed and the carrier information of control information are sent to MBMS receiving element 53, so that MBMS receiving element 53 is intercepted this carrier wave, thereby realize that MBMS receives.If the frequency information of this carrier wave of bearing carrier wave information spinner etc., MBMS receiving element 53 can be realized by various user terminals.
Below simple channel relevant and the mapping relations between them introduced with MBMS, to understand the transmission of MBMS data service of the present invention better.
MBMS relates to mainly contains MICH, MCCH, MTCH and MSCH, and wherein, MICH is the physical channel of a similar Paging Control Channel (PICH, Page Indicator Channel), and MCCH, MTCH, MSCH are three logic channels.
MCCH is used between network and user terminal UE descending transmission and puts multiple spot (P-T-M) chain of command information under Radio Resource control (RRC, Radio Resource Control) connection mode or idle pulley.Usually, MCCH is mapped to the specific forward access channel (FACH, Forward Access Channel) of auxiliary publish control physical channel SCCPCH, and is shown in Broadcast Control Channel (BCCH, Broadcast Control Channel).
MTCH is under RRC connection or idle pulley, and the point that is used for downlink transmission user face between network and a plurality of user terminal UE is to multiple spot MBMS business information, and MTCH always is mapped to the specific FACH of SCCPCH, and indicates on MCCH.
MSCH RRC connect or idle pulley under, be used for the professional transmitting scheduling information of MBMS that between network and a plurality of user terminal UE downlink transfer is put multiple spot, MSCH always is mapped to the specific FACH of SCCPCH, and is indicated in MCCH.
Among the present invention, MBMS receiving element 53 is intercepted carrier wave and is adopted discontinuous reception (DRX) mode.In order to understand the MBMS status transmission on the special carrier, MBMS receiving element 53 need periodically be intercepted the control signaling of MCCH on the bearing carrier wave that bearing carrier wave dispensing unit 51 confirms.MBMS receiving element 53 can be intercepted the MBMSMODIFIED SERVICES INFORMATION of MCCH transmission on the carrier wave at each change cycle (Modification period), whether is necessary to continue to read MCCH with decision in the follow-up time of Modification period.The DRX mode can adopt the similar mechanism among the 3GPP Release6.
The transmission of system information in the MBMS special carrier network cell is mainly transmitted by Master Information Block (Masterinformation block), SIB3, SIB5 and SIB11.The information that Master Information Block comprises is identical with Master Information Block among the 3GPPRelease6, can be referring to agreement TS25.331.Transmission parameters is mainly used in cell selecting and gravity treatment among traditional SIB3, and MBMS special carrier network cell does not participate in these processes, and therefore many parameters all can not transmitted.Among the present invention, SIB3 mainly transmits sub-district ID, limiting parameter and MBSFN only indication are inserted in the sub-district.In the MBMS special carrier network cell, SIB5 is used to transmit configuration, frequency band indication and the TDD MBSFN information of SCCPCH on the crack in short-term.SIB11 is used to transmit in short-term measuring control information and adjacent area MBSFN list of frequency (frequency list) on the crack in the MBMS special carrier network cell.Information format about SIB3, SIB5 and SIB11 can be referring to the agreement TS25.331 of 3GPP formulation.Among the present invention, the content that the system information that comprises among Master Information Block and the SIB5 must be transmitted, SIB3 selects transmission with SIB11 according to different business demands.
The MBMS control signaling of transmitting on MCCH has: MBMS changes business information (MBMSMODIFIED SERVICES INFORMATION), MBMS does not change business information (MBMSUNMODIFIED SERVICES INFORMATION), MBMS general information (MBMSGENERAL INFORMATION), the public point to multi-point wireless beared information of MBMS (MBMSCOMMON P-T-M RB INFORMATION), MBMS current area P-T-M wireless loading information (MBMS CURRENT CELL P-T-M RB INFORMATION) and MBMS neighbor cell P-T-M wireless loading information (MBMS NEIGHBOURING CELL P-T-M RBINFORMATIONMBM), below simply introduce MBMS control signaling:
MBMS MODIFIED SERVICES INFORMATION is mainly used in indication MBMS business modification, can be used for the purpose of DRX and notice.To transmit the content of this message simpler than the content of corresponding message among the 3GPP Release6 for the MBMS special carrier system among the present invention, reason mainly is the carrier cell dedicated support that does not comprise selected carrier wave, and the MBMS special carrier system that the present invention carried will adopt specific technical support carrier wave association.In addition, because the MBMS special carrier system all is descending, can't require UE to carry out up feedback, so related cells needn't be transmitted.But when concrete transmission, the business that this MBMS control signaling not only will comprise this sub-district changes situation, also will comprise the adjacent carrier cell dedicated business activity situation of MBMS frequently.System is when carrying out the carrier wave association, requirement to the relevant carrier cell dedicated frequency of MBMS be numbered, therefore indicate concrete professional change situation also to need to carry the frequency of neighbor cell (frequency neighbour) message, it points to the frequency information tabulation of being transmitted among the SIB11 (frequencyinformation list).
MBMS UNMODIFIED SERVICES INFORMATION is mainly used in the MBMS business that indication is not changed.To transmit the content of this message simpler than the content of corresponding message among the 3GPPRelease6 for the MBMS special carrier system among the present invention, reason mainly is carrier cell dedicatedly not comprise that the MBMS special carrier system that the present invention carried will adopt specific technical support carrier wave association to the support of selected carrier wave.In addition, because the MBMS special carrier system all is descending, can't require UE to carry out up feedback, so related cells needn't be transmitted.But when concrete transmission, this MBMS control signaling not only will comprise the MBMS business that does not change this sub-district, also will comprise the carrier cell dedicated not MBMS business of change of adjacent MBMS frequently.
MBMS GENERAL INFORMATION, be mainly used in the generic configuration of indication MBMS in carrier cell dedicated, similar among the basic and 3GPP Release6 of content, but increased the indication of carrier wave notice, when the MBSFN of certain carrier wave correspondence services notified is true (TURE), represent that the service announcements on this carrier wave will transmit in this sub-district.
MBMS COMMON P-T-M RB INFORMATION, identical with the form of 3GPP Release6 definition, specifically can be referring to the agreement TS25.331 of 3GPP regulation.
MBMS CURRENT CELL P-T-M RB INFORMATION is mainly used under the indication MBSFN situation RB that is disposed in this is carrier cell dedicated and the information of interrelated logic channel MTCH, MSCH, transmission channel and physical channel SCCPCH.
MBMS NEIGHBOURING CELL P-T-M RB INFORMATIONMBM is mainly used in business activity and the configuring condition of the associated adjacent MBMS frequently of indication in carrier cell dedicated.With compare among the 3GPPRelease6, change has taken place in the purposes of this message.Among the 3GPP Release6, this message is used to transmit the configuration of RB in the adjacent area, merges processing so that UE carries out physical layer; And in the present invention, UE does not require to merge in physical layer and handles.MBMS NEIGHBOUR-ING CELL P-T-M RB INFORMATION content is basic identical among the content of this message and the 3GPP Release6, but increased the frequency indication frequency neighbour to RB information, this frequency neighbour points to the frequency information list that is transmitted among the SIB11.
Fig. 6 is the flow chart that the present invention is based on special carrier MBMS transmission method, and as shown in Figure 6, the method based on the special carrier MBMS transmission among the present invention may further comprise the steps:
Step 601:, select a carrier wave to carry MBMS system information and control information according to the carrier wave configuring condition of system in each sub-district.
Here, the configuration of carrier wave is that unit carries out with the sub-district, and each cell configuration has the special carrier of a general service carrier wave and at least one carrying MBMS, according to the distribution of system's available resources, general each sub-district need dispose 2 to 3 special carriers, to guarantee the high bandwidth of MBMS transmission.Step 601 promptly means: in the sub-district that an overloading covers frequently, only select in this sub-district of carriers carry common signal channels such as BCCH, the MSCH of carrying MBMS public information and MCCH, come MBMS transmission system information and control information.Among the present invention, only the carrier wave for carrying MBMS system information and control information disposes PCCPCH.The present invention carries out a plurality of special-purpose MBMS carrier waves descending binding and is used as the MBMS transmission, all the other special carrier configuration service channel MTCH, MTCH is carried by auxiliary publish control physical channel, promptly except that the carrier wave that has disposed PCCPCH, remaining MBMS special carrier can only dispose SCCPCH, certainly, except SCCPCH, also configurable other channel of above-mentioned MBMS special carrier.The carrier wave of carrying MBMS system information and control information can be common carrier wave, and at this moment all MBMS special carriers are configuration service channel MTCH all, also can dispose other channel as required.The carrier wave of carrying MBMS system information and control information also can be a special carrier, be this special carrier configuration PCCPCH this moment, remaining MBMS special carrier can only dispose SCCPCH, and the special carrier of carrying MBMS system information and control information also can dispose the SCCPCH of carrying MBMS Traffic Channel simultaneously.
For making system constitute single frequency network SFN, the number of carriers of all cell configuration and carrier frequency etc. are identical in the system, and the carrier wave of selecting to be used for to carry MBMS system information and control information in each sub-district is also all identical.
About channel relevant and the mapping relations between them,, repeat no more here referring to the description of preamble based on special carrier MBMS transmission device relevant portion with MBMS.About Master Information Block, SIB3, SIB5, SIB11 and the relevant control command of carrying MBMS system information and control information, same referring to the description of preamble based on special carrier MBMS transmission device relevant portion.
Step 602: the carrier information that will carry MBMS system information and control information carrier wave is sent to user terminal.Among the present invention, adopt the general service carrier wave to transmit described carrier information, carrier information mainly is the frequency information of carrier wave.
Step 603: user terminal is intercepted corresponding carriers according to the carrier information in the step 602 that receives, and obtain the configuration information of MBMS data service according to the MBMS system information that listens to and control information, determine the special carrier of carrying MBMS business datum according to configuration information, be synchronized on this special carrier and receive MBMS data on it.Above-mentioned configuration information comprises gap information, channel information and modulation system etc.
UE for the double-receiver of supporting general service and MBMS, before being synchronized to the MBMS special carrier system, at first to be synchronized to the common carrier wave related with the MBMS special carrier system, utilize the MBSFN ID of MBMS special carrier system indicated on the common carrier wave then, be synchronized to the MBMS special carrier system rapidly.
After being synchronized to the MBMS special carrier system, the UE PCCPCH physical channel of at first decoding reads the content among the BCCH, and utilizes the MBSFN only among the SIB3 to indicate whether this carrier wave of verification is the MBMS special carrier system; UE utilizes the frequency band indication of SIB5 and the SCCPCH physical channel configuration decision of MCCH correspondence how to intercept the MCCH channel then.
UE indicates and knows the optional business in this sub-district by receiving business on the MCCH, can also learn the business activity situation of adjacent MBMS frequently on carrier cell dedicated.UE can determine whether this sub-district has the carrier cell dedicated ability that goes up the business activity situation of the adjacent MBMS frequently of notice according to the MBSFN services notified on the MBMS GENERALINFORMATION.
If UE finds no business interested, then adopt the DRX pattern to intercept MCCH; If the interested business of UE is in this sub-district, then directly according to answering related service at this professional RB configuration and channel parameter on the MBMS CURRENT CELL P-T-M RBINFORMATION, after the business of answering, UE can select to intercept suitable MCCH in the DRX mode, so that understand the active situation of MBMS business.
If the interested business of UE is on neighbour's frequency MBMS is carrier cell dedicated, then directly according to answering related service at this professional RB configuration and channel parameter on the MBMSNEIGHBOURING CELL P-T-M RB INFORMATIONMBMS content, after the business of answering, UE can select to intercept suitable MCCH in the DRX mode, so that understand the active situation of MBMS business.Depend on that as for intercepting which MCCH UE is the most relevant with this UE to the setting and the carrier cell dedicated business that can notify of which MBMS of MBMS business.
Fig. 7 is the structural representation of the system of MBMS transmission of the present invention.As shown in Figure 7, transmitting multimedia broadcast multicast service of the present invention system, include core net CN 74, be used for general service Node B 71, be exclusively used in MBMS Node B 72, be used to control radio network controller (RNC) 73 and the user terminal UE 70 of general service Node B and MBMS Node B.RNC 73 is connected in CN 74 by the Iu interface, and general service Node B 71 and MBMS Node B 72 are connected in RNC 73 by Iub interface, and UE 70 is connected to general service Node B 71 and MBMS Node B 72 by the Uu interface.
Fig. 8 is another structural representation of the system of MBMS transmission of the present invention.As shown in Figure 8, transmitting multimedia broadcast multicast service of the present invention system includes core net CN 74, is used for the NodeB 71 of general service, the Node B 72 that is exclusively used in MBMS and user terminal UE 70.Compare with structure shown in Figure 7, the structure shown in Fig. 8 has not had RNC, and along with the continuous development speech of 3G network, the function of Node B is experienced more powerful more, and the function of RNC moves down among the Node B.Structure shown in Figure 8 will more help realizing the realization of the professional networking of MBMS of the present invention.
Because the Node B in the 3G system includes control unit, therefore, transmitting multimedia broadcast multicast service of the present invention system can realize existing 3G system bearing high speed MBMS data service only by independent MBMS Node B is set.Control unit by Node B inside, can realize the carrying MBMS system information of aforementioned transmission method of the present invention and device and the selection of control information carrier wave, thereby realize the binding of MBMS special carrier, improved the speed of system transmissions MBMS data service, and make intrasystem terminal need not to intercept all special carriers, greatly reduce the power consumption of terminal.
The system of transmitting multimedia broadcast multicast service of the present invention proposes at above-mentioned transmission method and device, common carrier network and the same set of core net of special carrier network using, adopt integrated wireless accessing network structure promptly to adopt identical RNC to realize the transmission of general service and MBMS business, and support the sub-district of the common carrier network and the special carrier network coverage may be under the jurisdiction of different Node B.The system that it will be appreciated by those skilled in the art that transmitting multimedia broadcast multicast service of the present invention is for the usefulness that illustrates, not should be understood to limitation of the invention.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (22)
1, a kind of method based on special carrier transmitting multimedia broadcast multicast service is characterized in that:
The special carrier binding is used for the transmission of multimedia broadcast-multicast service MBMS.
2, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 1 is characterized in that: special carrier binding and MBMS transmission specifically comprise:
MBMS system information and MBMS control information are configured in the carrier wave;
The carrier information of MBMS system information and control information carrier wave is disposed in transmission; And
Send the MBMS data.
3, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 2 also comprises:
The user intercepts determined carrier wave according to the carrier information that receives, and obtains the configuration information of MBMS business according to MBMS system information that listens to and control information, and receives the MBMS data on the special carrier.
4, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 2 is characterized in that, described carrier information is sent by the general service carriers carry.
5, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 2 is characterized in that, described MBMS system information and control information are configured to the MBMS special carrier.
6, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 2 is characterized in that, described MBMS system information and control information are configured to the general service carrier wave.
7, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 2 is characterized in that, for carrier wave configuration MBMS system information and control information are that unit carries out with the sub-district, selects the carrier wave of configuration all identical in each sub-district.
8, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 3 is characterized in that, the user intercepts carrier wave and adopts discontinuous reception DRX mode.
According to each described method in the claim 1 to 8, it is characterized in that 9, described MBMS system information is by system information block SIB carrying transmission based on special carrier transmitting multimedia broadcast multicast service.
10, the method based on special carrier transmitting multimedia broadcast multicast service according to claim 9 is characterized in that, the system information block of carrying MBMS system information comprises SIB5 and Master Information Block at least.
11, according to each described method in the claim 1 to 8 based on special carrier transmitting multimedia broadcast multicast service, it is characterized in that described MBMS control information comprises that MBMS change business information, MBMS do not change business information, MBMS general information, the public point to multi-point wireless beared information of MBMS, MBMS current area P-T-M wireless loading information and MBMS neighbor cell P-T-M wireless loading information.
12, a kind of device based on special carrier transmitting multimedia broadcast multicast service comprises:
The bearing carrier wave dispensing unit is used for MBMS system information and control information are configured to a carrier wave;
The bearing carrier wave information transmitting unit is used to send the information of bearing carrier wave carrier wave that dispensing unit disposes; And
The MBMS data transmission unit is used to send the MBMS data.
13, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 12 also comprises:
The MBMS receiving element is used for intercepting this carrier wave according to the carrier information that receives, and determines the MBMS service configuration information according to MBMS system information that listens to and control information, and receives the MBMS data on the special carrier.
14, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 12 is characterized in that, described bearing carrier wave information transmitting unit is with general service carriers carry carrier information, and is sent to the MBMS receiving element.
15, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 12 is characterized in that, described bearing carrier wave dispensing unit is configured to the MBMS special carrier with MBMS system information and control information.
16, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 12 is characterized in that, described bearing carrier wave dispensing unit is configured to the general service carrier wave with MBMS system information and control information.
17, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 12, it is characterized in that, described bearing carrier wave dispensing unit is that carrier wave configuration MBMS system information and control information are that unit carries out with the sub-district, selects the carrier wave of configuration all identical in each sub-district.
According to each described device of claim 12 to 17, it is characterized in that 18, described MBMS receiving element is intercepted carrier wave and adopted discontinuous reception DRX mode based on special carrier transmitting multimedia broadcast multicast service.
According to each described device in the claim 12 to 17, it is characterized in that 19, described MBMS system information is by system information block SIB carrying transmission based on special carrier transmitting multimedia broadcast multicast service.
20, the device based on special carrier transmitting multimedia broadcast multicast service according to claim 19 is characterized in that, the system information block of carrying MBMS system information comprises SIB5 and Master Information Block at least.
21, a kind of system of transmitting multimedia broadcast multicast service, it is characterized in that, this system comprises core net CN, be used for the Node B of general service, be exclusively used in Node B and the user terminal UE of MBMS, described UE is connected to general service Node B and MBMS Node B by the Uu interface, and CN is connected to general service Node B and MBMS Node B.
22, a kind of system of transmitting multimedia broadcast multicast service, it is characterized in that, this system comprises core net CN, be used for the Node B of general service, be exclusively used in MBMS Node B, be used to control radio network controller (RNC), the user terminal UE of general service Node B and MBMS Node B, described RNC is connected in CN by the Iu interface, described general service Node B and MBMS Node B are connected in RNC by Iub interface, and described UE is connected to general service Node B and MBMS NodeB by the Uu interface.
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