CN101237495B - A channel parameter configuration method for TV broadcasting system based on TD-SCDMA - Google Patents
A channel parameter configuration method for TV broadcasting system based on TD-SCDMA Download PDFInfo
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Abstract
The invention discloses a configuration method for communication channel parameters based on a TD-SCDMA television broadcasting system, which is used for realizing loading of television broadcasting services and configuration of the communication channel parameters. The invention adopts a technical proposal that a network side informs a user terminal about the frequency point information of the television service and the configuration information of the communication channel parameters by system message broadcasting. The method comprises the following steps that; the network side maps a television channel to a transport stream, the transport stream to a logic channel, the logic channel to a transmission channel and the transmission channel to a physical channel; the network side informs the user terminal about the frequency point information of the television service and the configuration information of the information channel parameters via system messages, wherein the system information of a subsidiary common controlled physical information channel ( SCCPCH) of system message blocks is subject to non-key extension to be increased; the indication information of television service loading indicates whether the physical channel is specialized in loading television service; the auxiliary frequency point information of the physical channel indicates the frequency point information of the physical channel which is specialized in television service loading; the mapping relation chart of mapping the transport stream to the physical information channel comprising an identification information of the transport stream. The invention is applied to the mobile communication field.
Description
Technical field
The present invention relates to the tv broadcasting technology in TD-SCDMA, relate in particular to the channel parameter configuration method in a kind of TD-SCDMA television broadcasting system.
Background technology
At present, people no longer are satisfied with phone and messaging service to the demand of mobile communication, and a large amount of multimedia services emerge, and wherein television broadcasting even interactive television are one of interested application of people.
Because 3-G (Generation Three mobile communication system) (3G) can provide the speed higher than 2G/2.5G system, the service supporting capacity of the availability of frequency spectrum, therefore, the commercialization of 3G technology has brought further opportunity to develop to mobile communication, for the development mobile phone TV services provide the network platform.
In the 3G system, MBMS (Multimedia Broadcast Multicast Service) technology is to realize an important technology of multimedia (comprising video, audio frequency, data etc.) broadcasting.MBMS is the multimedia broadcasting and multicast function that defines among the 3GPP REL6.Because MBMS realizes complicated, and the REL6 version is not commercial as yet at present, and in addition, this technology is still undefined in the TD-SCDMA system, so we propose a kind of scheme that realizes television broadcasting at TD-SCDMA.
TD-SCDMA is a part of 3G technology standard.The networking mode of TD-SCDMA mainly contains inter-frequency networking, 1.6M identical networking, these three kinds of networking modes of 5M identical networking.At present in 5M identical networking mode, 5M is a N frequency system with system frequently, N=3 here, and promptly there are 1 dominant frequency point and 2 auxilliary frequency resources in a sub-district, and each sub-district is different with the dominant frequency point of its adjacent area.As shown in Figure 1, agreement foremost frequency is the dominant frequency point among the figure, the frequency that uses as sub-district 100 be f1, f2, f3}, its dominant frequency point is f1.As seen from the figure, the dominant frequency point of all adjacent areas of dominant frequency point and its of sub-district 100 is all different.
Realize that based on the television broadcasting system of TD-SCDMA newly-increased one or more auxilliary frequencies in original TD-SCDMA system newly-increased frequency is used for and only is used to carry visual broadcast service, original dominant frequency point and assist that frequency is used for and only be used for communication service.Here we claim the auxilliary frequency that is used for visual broadcast service that increases newly to be the broadcasting frequency, and containing the TD-SCDMA system that broadcasts frequency is the TD-SCDMA television broadcasting system.Fig. 2 shows a TD-SCDMA TV broadcast network, all increases an auxilliary frequency f4 in each sub-district, and original frequency keeps communication service constant, only carries television services on newly-increased frequency f4.The TD-SCDMA television broadcasting system has following characteristics: strict synchronism between each base station, on the broadcasting frequency, form single frequency network (SFN, Single Frequency Net); Frame structure, structure of time slot and the TD-SCDMA of broadcasting frequency correspondence are consistent; TS1～TS6 time slot in every subframe of broadcasting frequency is descending, sends the downlink broadcast business.In user's received television signal process, UE does not do switching when crossing over cell boarder, but is similar to the sub-district gravity treatment under the idle pattern.In addition, UE should be able to normally receive ICQ when received television signal, to guarantee basic communication service function.
Summary of the invention
The object of the present invention is to provide a kind ofly, in existing TD-SCDMA system, realize the carrying and the channel parameter configuration of visual broadcast service comparatively simply based on the channel parameter configuration method in the television broadcasting system of TD-SCDMA.
Technical scheme of the present invention is: the channel parameter configuration method that the invention provides a kind of television broadcasting system based on TD-SCDMA, the mode of network side by system message broadcasting comprises television services frequency points corresponding information and channel parameter configuration information informing user terminal:
Network side is mapped to transport stream with television channel;
Transport stream is mapped to logic channel;
Logic channel is mapped to transmission channel;
Transmission channel is mapped to physical channel;
By the system message informing user terminal;
Wherein the cell auxiliary publish control physical channel system information in the System information block is carried out non-key expansion to increase:
One television services carrying indication information indicates whether this physical channel is the channel that carries television services specially;
The auxilliary frequency point information at one physical channel place, the frequency point information at the physical channel place of the special carrying of indication television services;
One transmission flows to the mapping relations table of physical channel, comprises transport stream identification information.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, the mapping relations table that this transmission flows to physical channel also comprises the channel parameter information of transport stream descriptor, RLC entity information, transmission channel and physical channel.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, described method also comprises: network side is dispatched the transmission of the physical channel of carrying television services, the cell auxiliary publish control physical channel system information in the System information block is being carried out increase relevant schedule information in the non-key expansion accordingly.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, network side sends frequency point information and channel parameter configuration information on the broadcast channel of the dominant frequency point of TD-SCDMA television broadcasting system.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, network side sends frequency point information and channel parameter configuration information on first time slot of broadcasting frequency.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, System information block is being carried out increasing in the non-key expansion: the transmission schedule information of transformat, system message and/or the paging indicating message of system message correspondence on the broadcasting frequency of current area and adjacent area.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, this method also comprises the receiving course of a user terminal:
This user terminal receiving system message, auxilliary frequency point information, each auxilliary frequency of preserving the television broadcasting correspondence come on TV program and channel parameter mapping relations table;
This user terminal obtains the parameter channel configuration of selected TV programme from the television services channel parameter configuration information of preserving, and receives television services on the physical channel of the auxilliary frequency of correspondence.
The channel parameter configuration method of above-mentioned television broadcasting system based on TD-SCDMA, wherein, those mapping relations can be that one or more TV programme are mapped to a transport stream, one or more transport stream are mapped to a transmission channel, and one or more transmission channels are mapped to a physical channel.
The present invention contrasts prior art following beneficial effect: the present invention has finished the mapping of content of TV program to transport stream, flows to the mapping of transmission channel from transmission, and the mapping from the transmission channel to the physical channel again is then by system message notice UE.The present invention simultaneously carries out non-key expansion to cell auxiliary publish control physical channel (SCCPCH) system information in the System information block.The present invention can realize the carrying and the channel parameter configuration of visual broadcast service simply.
Description of drawings
Fig. 1 is the schematic diagram of a preferred embodiment of the N frequency system of TD-SCDMA.
Fig. 2 is the schematic diagram of a preferred embodiment of N frequency system of the TD-SCDMA of the newly-increased frequency that is used to carry visual broadcast service.
Fig. 3 is the flow chart of a preferred embodiment of channel parameter configuration method of the present invention.
Fig. 4 a～4c is the form schematic diagram of an example of channel parameter configuration of the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 3 shows the flow process of a preferred embodiment of channel parameter configuration method of the present invention.See also Fig. 3, in the TD-SCDMA television broadcasting system, the mode of network side by system message broadcasting is with television services frequency points corresponding information, channel parameter configuration information informing user terminal (UE, User Equipment).
At first finish television channel to transport stream (TS stream by application layer, Transport Stream) mapping, finish by radio network controller (RNC) again and flow to the mapping of logic channel from TS (the logic channel here can be used the common service logic channel (CTCH of existing system, Common Traffic Channel), the completion logic channel is to the mapping of transmission channel FACH (Forward Access Channel) then, finish the mapping of from transmission channel FACH to physical channel SCCPCH (Secondary Common Control Physical Channel) at last, and by system message notice UE.
In above-mentioned mapping relations, can be that one or more television channels are mapped to a transport stream, one or more transport stream are mapped to a transmission channel FACH, and one or more transmission channel FACH are mapped to a physical channel SCCPCH.
Based on the TD-SCDMA grid of REL4 or REL5, (Secondary CCPCH system information) carries out non-key expansion to the cell SCCPCH system information in the System information block 5 (SIB 5), increases following content at present:
A) television services carrying indication information indicates whether this SCCPCH is the channel that carries television services specially;
B) the auxilliary frequency point information at SCCPCH place, the frequency point information (Frequency information) at the SCCPCH place of the special carrying of indication television services;
C) flow to the mapping relations table of SCCPCH from TS, comprising TS traffic identifier (ID) information and the optional channel parameter information of TS descriptor, RLC entity information, transmission channel FACH and physical channel SCCPCH;
D) alternatively, if network side is dispatched the transmission of SCCPCH, need to increase relevant schedule information so;
E) alternatively, if at the TS0 time slot transmitting system message and/or the paging information of broadcasting frequency, needing to increase transformat, system message and/or the PICH of system message correspondence on the broadcasting frequency of current area and adjacent area so, network side sends schedule information (for example sending cycle, each transmitting time etc.).
Be the processing procedure of UE end below: promptly be in the IDLE pattern after the UE start, preserve the auxilliary frequency point information of television broadcasting correspondence after the UE receiving system message, each auxilliary frequency come on TV program and channel parameter mapping relations table.In case the user selects a TV programme by MMI (Man to Machine Interface) operation, UE will obtain the parameter channel configuration of this TV programme from the television services channel parameter configuration information of preserving, and will receive television services on the physical channel SCCPCH of the auxilliary frequency of correspondence.
Below in conjunction with the example of Fig. 4 description based on said method, this example is realized television broadcasting system channel parameter allocation plan in the REL4 version of not supporting MBMS (Multimedia Broadcast Multicast Service).On the basis of RRC agreement 3GPP 25.331, System information block SIB5 is carried out non-key expansion, increase thes contents are as follows:
A) in cell " SCCPCH system information " (Secondary CCPCH system information), increase cell " television services beared information " (TV Broadcasting info), shown in Fig. 4 a, be used to indicate this SCCPCH whether to carry visual broadcast service specially.If this SCCPCH carrying visual broadcast service, this cell will appear among the SIB5 so, otherwise not occur;
B) content that comprises of cell " television services beared information " (TV Broadcasting info) is shown in Fig. 4 b, wherein cell " frequency point information " (Frequency info) is indicated the frequency at this SCCPCH place, cell " transport stream " (Transport Stream info) indication transport stream, the professional RLC entity patterns that uses of cell " RLC information " (RLC info) indication TV uses RLC UM pattern here;
C) content that comprises of cell " transport stream " (Transport Stream info) is shown in Fig. 4 c, comprise transport stream identification (ID) information (Transport stream identity) and optionally Non-Access Stratum (NAS) to the descriptor " NAS descriptor " of TS stream;
D) optional, in cell " SCCPCH system information ", increase the SCCPCH schedule information on the broadcasting frequency, such as increasing optional cell " timeslot scheduling information " (Time Slot Scheduling information);
E) optional, the transformat of system message correspondence, system message and/or PICH send schedule information (transmission cycle, each transmitting time etc.) on the broadcasting frequency of increase current area and adjacent area in SIB5.
After System information block SIB5 is carried out non-key expansion, the basic process that network side carries out visual broadcast service respective channels parameter configuration is: network side is mapped to a transport stream TS with a television channel, then a TS stream is mapped to a logic channel, here logic channel is used the existing C TCH of system, then a CTCH is mapped to a transmission channel FACH, again a FACH is mapped to a SCCPCH.In above-mentioned mapping relations, the mapping from the television channel to the physical channel all is one to one.
Inventive point of the present invention is the cell SCCPCH system information of System information block SIB5 is carried out non-key expansion, increase some contents, and the mapping from content of TV program to TS stream, logic channel, transmission channel and physical channel in the parameter configuration process.
The foregoing description provides to those of ordinary skills and realizes or use of the present invention; those of ordinary skills can be under the situation that does not break away from invention thought of the present invention; the foregoing description is made various modifications or variation; thereby protection scope of the present invention do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (7)
1. the channel parameter configuration method based on the television broadcasting system of TD-SCDMA is characterized in that, the mode of network side by system message broadcasting comprises television services frequency points corresponding information and channel parameter configuration information informing user terminal:
Network side is mapped to transport stream with television channel;
Transport stream is mapped to logic channel;
Logic channel is mapped to transmission channel;
Transmission channel is mapped to physical channel;
By the system message informing user terminal;
Wherein the cell auxiliary publish control physical channel system information in the System information block is carried out non-key expansion to increase:
One television services carrying indication information indicates whether this physical channel is the channel that carries television services specially;
The auxilliary frequency point information at one physical channel place, the frequency point information at the physical channel place of the special carrying of indication television services;
One transmission flows to the mapping relations table of physical channel, comprises transport stream identification information.
2. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 1, it is characterized in that the mapping relations table that this transmission flows to physical channel also comprises the channel parameter information of transport stream descriptor, RLC entity information, transmission channel and physical channel.
3. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 1, it is characterized in that, described method also comprises: network side is dispatched the transmission of the physical channel of carrying television services, the cell auxiliary publish control physical channel system information in the System information block is being carried out increase relevant schedule information in the non-key expansion accordingly.
4. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 1 is characterized in that network side sends frequency point information and channel parameter configuration information on the broadcast channel of the dominant frequency point of TD-SCDMA television broadcasting system.
5. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 1 is characterized in that, network side sends frequency point information and channel parameter configuration information on first time slot of broadcasting frequency.
6. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 5, it is characterized in that, System information block is being carried out increasing in the non-key expansion: the transmission schedule information of transformat, system message and/or the paging indicating message of system message correspondence on the broadcasting frequency of current area and adjacent area.
7. the channel parameter configuration method of the television broadcasting system based on TD-SCDMA according to claim 1 is characterized in that this method also comprises the receiving course of a user terminal:
This user terminal receiving system message, auxilliary frequency point information, each auxilliary frequency of preserving the television broadcasting correspondence come on TV program and channel parameter mapping relations table;
This user terminal obtains the parameter channel configuration of selected TV programme from the television services channel parameter configuration information of preserving, and receives television services on the physical channel of the auxilliary frequency of correspondence.
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| CN1852592A (en) * | 2005-10-31 | 2006-10-25 | 华为技术有限公司 | Method for avoiding interference of residence multi-cast business |
| CN1867086A (en) * | 2005-11-24 | 2006-11-22 | 华为技术有限公司 | Realization method and apparatus of designating SCCPCH for user terminal |
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| CN1852592A (en) * | 2005-10-31 | 2006-10-25 | 华为技术有限公司 | Method for avoiding interference of residence multi-cast business |
| CN1867086A (en) * | 2005-11-24 | 2006-11-22 | 华为技术有限公司 | Realization method and apparatus of designating SCCPCH for user terminal |
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