CN100505911C - Method and system for distributing wireless resource in MBMS - Google Patents
Method and system for distributing wireless resource in MBMS Download PDFInfo
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- CN100505911C CN100505911C CNB2007100736706A CN200710073670A CN100505911C CN 100505911 C CN100505911 C CN 100505911C CN B2007100736706 A CNB2007100736706 A CN B2007100736706A CN 200710073670 A CN200710073670 A CN 200710073670A CN 100505911 C CN100505911 C CN 100505911C
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Abstract
A method for distributing radio resource in MBMS includes finalizing set-up of physical channel SCCPCH carried with MBMS service by RNC through issuing public transmission channel set-up process to NodeB by Iub interface in TD-SCDMA system, carrying high order modulation and time slot definition information in Iub interface control surface message sent to NodeB by RNC in process of issuing to set up public transmission channel and finalizing high order modulation mode configuration by NodeB according to definition information. The system used for realizing said method is also disclosed.
Description
Technical field
The present invention relates to field of mobile communication, relate in particular in a kind of wireless communication field TD SDMA (TD-SCDMA) system and be the method for multimedia broadcast-multicast service (MBMS, Multimedia Broadcast Multicast Service) distributing radio resource.
Background technology
Along with popularizing of large-screen multi-functional mobile phone, the application of mobile data services more and more widely no longer is satisfied with phone, message and surfing Internet with cell phone browse service etc. to the demand of mobile communication.Because the fast development of Internet, a large amount of multimedia services emerge.Various high bandwidth multimedia services, constantly occur as video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., satisfy the business demand that the mobile subscriber constantly rises on the one hand, also bring new business growth point simultaneously for mobile operator.These mobile multi-media services require a plurality of users can receive identical data simultaneously, compare with general data, have characteristics such as data volume is big, longer duration, delay sensitive.
In order to effectively utilize mobile network resource, 3GPP has proposed multimedia broadcasting and multicast service (being MBMS), in the mobile 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, and improve the utilance of Internet resources (the especially Bao Gui interface resource of eating dishes without rice or wine).MBMS is a kind of shared network resource transmits data to a plurality of targets from a data source a technology.The MBMS of 3GPP definition 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, multiple rich video, audio frequency and multimedia service are provided, this has complied with the trend of following mobile data development undoubtedly, for the development of 3G provides better professional prospect.
In the configuration of radio bearer, MBMS can adopt the bearer types of P-T-M (put multiple spot, also can write a Chinese character in simplified form PTM or ptm) and P-T-P (point-to-point also can be write a Chinese character in simplified form PT or ptm).The PTM mode of MBMS uses common logical MTCH (MBMSPTM Traffic Channel, point multipoint message traffic channel) that all are added multicast service or the interested UE of broadcasting service (User Equipment, subscriber equipment) is sent data; The MTCH logic channel is mapped to transmission channel FACH, sends at wave point by physical channel Sencondary CCPCH (SCCPCH, less important Common Control Physical Channel).System side RNC (Radio Network Controller, radio network controller) informs the configuration informations such as physical channel of the relevant MBMS business configuration of UE by the MCCH channel.
Can there be serious co-channel interference when in the TD-SCDMA multi-carrier frequency system, providing MBMS professional.Logic channel MTCH under the MBMS PTM mode is mapped to transmission channel FACH, and finally is carried on the SCCPCH public physic channel.Public physic channel SCCPCH uses omni-directional antenna transmission.While MBMS business is the mobile TV service of high speed normally, takies many code channels.Like this, when using the SCCPCH channel of omni-directional antenna transmission to carry out the continuous covering of MBMS business, can cause serious minizone co-channel interference, make service quality can not get ensureing in many sub-districts.
The problem of co-channel interference of minizone during for the solution identical networking, a kind of well accepted scheme is single-slot network (UTN) scheme.It requires all sub-districts to use same carrier, time slot, channel code, scrambler and basic midamble sign indicating number to send the wireless signal of identical MBMS business channels.Under the UTN pattern, UE can be considered as multipath signal with the signal that comes from different base station, makes to obtain big performance gain aspect the receiving broadcast service signal, has improved the service quality of MBMS business.This scheme can improve the broadcasting service availability of frequency spectrum, and the realization of UE side is also comparatively simple simultaneously.
Realize the MBMS business with the networking of UTN mode, user terminal receives the MBMS business can obtain bigger receiving gain, and has not had the co-channel interference of adjacent area.Therefore, network side can use more the modulation system of high-order that the MBMS service signal is carried out modulation treatment.Modulation system is got over high-order, means in identical wireless frequency bandwidth, can carry more useful information.Just can realize the MBMS business of bigger bandwidth.This is very helpful to improving the availability of frequency spectrum.
In existing 3GPP agreement, RNC (Radio Network Controller, radio network controller), initiate Common transport channel by Iub interface to NodeB (Node B) and set up the foundation that process (Common Transport Channel Setup) is finished the physical channel Secondary CCPCH of carrying MBMS business.RNC tells the physical resource of the relevant channel of NodeB to dispose by message, comprises time slot, channel code, and modulation system, modulation system time slot corresponding form etc.Concrete, the modulation system of specifying a SCCPCH physical channel to use among the cell TDDChannelisation Code LCR that RNC carries in Iub message COMMONTRANSPORT CHANNEL SETUP REQUEST, in the prior art, i.e. the modulation system of existing protocol definition comprises: QPSK and 8PSK.
And in the UTN of MBMS scheme, have demand to use and define the more modulation system of high-order than existing protocol, comprise 16QAM or 64QAM.The prior protocols definition can not be supported in the modulation system of these high-orders of configuration in the public physic channel configuration messages, and the definition of high order modulation time slot corresponding form is not supported in the existing protocol definition equally.Therefore, the method that lacks the distributing radio resource of configuration high-order modulating in the prior art.
Summary of the invention
The object of the present invention is to provide a kind of when in the TD-SCDMA system, using MBMS, RNC configuration NodeB uses high-order modulating to public physic channel SCCPCH, and the method for modulation system time slot corresponding form, thereby remedy the disappearance of this technology in the prior art.
One aspect of the present invention provides the method for distributing radio resource among a kind of MBMS, in the TD-SCDMA system, RNC initiates Common transport channel by Iub interface to NodeB and sets up the foundation that process is finished the physical channel SCCPCH of carrying MBMS business, set up in the process at described initiation Common transport channel, RNC carries the definition information to high order modulation and time slot format sending in the Iub interface chain of command message to NodeB; NodeB finishes the high-order modulating configuration wherein according to described definition information, and described Iub interface chain of command message is Common Transport Channel Setup Request message.
Preferably, described mode of carrying the definition information of high order modulation and time slot format is: in message Common Transport Channel Setup Request, increase by second cell that is used in reference to first cell that is shown in the modulation system that corresponding SCCPCH channel uses and is used to indicate the time slot format that this SCCPCH channel uses; NodeB uses described first cell and the entrained information of second cell to finish the high-order modulating configuration.
Preferably, described mode of carrying the definition information of high order modulation and time slot format is: increase the definition to high-order modulating in the cell TDDChannelisation Code LCR of message Common Transport Channel Setup Request, and increase the definition to high order modulation time slot corresponding form in cell TDD DL DPCH Time Slot Format LCR; The information that NodeB uses above-mentioned two cells to carry is finished the high-order modulating configuration.
The present invention provides the system of distributing radio resource among a kind of MBMS on the other hand, be included in RNC and NodeB in the TD-SCDMA system, described RNC comprise by Iub interface to NodeB initiate Common transport channel set up process finish carrying MBMS business physical channel SCCPCH set up the unit, set up in the process at the described unit initiation Common transport channel of setting up, set up the unit sending in the Iub interface chain of command message, carry definition information high order modulation and time slot format to NodeB; NodeB comprises the dispensing unit of finishing the high-order modulating configuration according to described definition information, and wherein, described Iub interface chain of command message is Common Transport Channel Setup Request message.
Preferably, described mode of carrying the definition information of high order modulation and time slot format is: in message Common Transport Channel Setup Request, increase by second cell that is used in reference to first cell that is shown in the modulation system that corresponding SCCPCH channel uses and is used to indicate the time slot format that this SCCPCH channel uses; The dispensing unit of NodeB uses described first cell and the entrained information of second cell to finish the high-order modulating configuration.
Preferably, described mode of carrying the definition information of high order modulation and time slot format is: increase the definition to high-order modulating in the cell TDDChannelisation Code LCR of message Common Transport Channel Setup Request, and increase the definition to high order modulation time slot corresponding form in cell TDD DL DPCH Time Slot Format LCR; The information that the dispensing unit of NodeB uses above-mentioned two cells to carry is finished the high-order modulating configuration.
By technique scheme, can realize following beneficial effect: the TD-SCDMA system realizes the high-order modulating of Common transport channel is disposed at Iub interface by above-mentioned method.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structure chart of the system of distributing radio resource among a kind of MBMS provided by the invention;
The flow chart of the method for distributing radio resource among Fig. 2 a kind of MBMS provided by the invention.
Embodiment
With reference to figure 1, illustrate the structure of the system of distributing radio resource among a kind of MBMS provided by the invention.As shown in the figure, this system is included in RNC and the NodeB in the TD-SCDMA system, described RNC comprise by Iub interface to NodeB initiate Common transport channel set up process finish carrying MBMS business physical channel SCCPCH foundation set up the unit, set up in the process at the described unit initiation Common transport channel of setting up, set up the unit sending in the Iub interface chain of command message, carry definition information high order modulation and time slot format to NodeB; NodeB comprises the dispensing unit of finishing the high-order modulating configuration according to described definition information.
What deserves to be explained is that the execution mode of described unit can be software, hardware or firmware, is preferably software, promptly on the software systems of RNC and NodeB, realize by newly-increased or change functional module.Therefore the process prescription of the method for the present invention that describes below when promptly to be system of the present invention with the form of software implement, be equal to description to system to the description of method.
With reference to figure 2, illustrate the flow process of the method for distributing radio resource among a kind of MBMS provided by the invention.As shown in the figure, step 201:RNC initiates Common transport channel by Iub interface to NodeB and sets up the foundation that process is finished the physical channel SCCPCH of carrying MBMS business, set up in the process at described initiation Common transport channel, RNC carries the definition information to high order modulation and time slot format sending in the Iub interface chain of command message to NodeB; Step 202:NodeB finishes the high-order modulating configuration according to described definition information.
In the preferred embodiment provided by the invention, described Iub interface chain of command message is the Iub interface chain of command message Common Transport Channel SetupRequest message of existing protocol definition, increases the definition to high order modulation and time slot format therein.The mode that increases has two embodiment divisions as follows:
Embodiment one:
In message Common Transport Channel Setup Request, directly increase cell a (first cell) and cell b (second cell).Wherein the name of cell a is ModulationIndication, the modulation system that this cell indication is used at the SCCPCH of correspondence channel; The name of cell b is Timeslot Format Indication, the time slot format that this cell indicates this SCCPCH channel to use.The mode that cell increases (overstriking person is for newly-increased) as shown in the table:
In embodiment one, the modulation system that disposes the SCCPCH physical channel if desired is 16QAM or 64QAM, and then RNC carries above-mentioned increase cell in message Common Transport Channel Setup.NodeB receives this message, uses the modulation system and the corresponding SCCPCH of time slot format configuration that increase the cell indication newly.
Embodiment two:
In the cell TDDChannelisation Code LCR of message Common Transport Channel Setup Request, increase definition to high-order modulating; And in TDDDL DPCH Time Slot Format LCR, increase definition to high order modulation time slot corresponding form.NodeB receives message, uses the modulation system and the time slot format definition of these two element definitions.
The definition change of cell TDD Channelisation Code LCR is as shown in the table: (overstriking person is a new content)
Agreement/group name | Essential/optional | Scope | Protocol type and reference | Semantic description |
TDD Channelisation Code | 9.2.3.19 | |||
Modulation | ENUMERATED (QPSK, 8PSK,16QAM,64Q AM...) | Modulation options for 1.28Mcps TDD in contrast to 3.84Mcps TDD |
The definition change of cell is as shown in the table: (overstriking person is a new content)
Agreement/group name | Essential/optional | Scope | Protocol type and reference | Semantic description |
CHOICE Modulation | M | |||
>QPSK | ||||
>>QPSK TDD DL DPCH Time Slot Format LCR | M | INTEGER (0..24,...) | ||
>8PSK | ||||
>>8PSK TDD DL DPCH Time Slot Format LCR | M | INTEGER (0..24,...) | ||
>16QAM | ||||
>>16QAM TDD DL DPCH Time Slot Format LCR | M | INTEGER (0..24,...) | ||
>64QAM | ||||
>>64QAM TDD DL DPCH Time Slot Format LCR | M | INTEGER (0..24,...) |
By implementing the technical scheme of the invention described above, can be implemented in Iub interface and realize the high-order modulating of common signal channel is disposed, distribute the Radio Resource of high-order modulating in this way, fill up the blank of prior art.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1, the method for distributing radio resource among a kind of MBMS, in the TD-SCDMA system, RNC initiates Common transport channel by Iub interface to NodeB and sets up the foundation that process is finished the physical channel SCCPCH of carrying MBMS business, it is characterized in that, set up in the process at described initiation Common transport channel, RNC carries the definition information to high order modulation and time slot format sending in the Iub interface chain of command message to NodeB; NodeB finishes the high-order modulating configuration according to described definition information, and wherein, described Iub interface chain of command message is Common Transport Channel Setup Request message.
2, the method for distributing radio resource among the MBMS as claimed in claim 1, it is characterized in that, described mode of carrying the definition information of high order modulation and time slot format is: in message Common Transport Channel Setup Request, increase by second cell that is used in reference to first cell that is shown in the modulation system that corresponding SCCPCH channel uses and is used to indicate the time slot format that this SCCPCH channel uses; NodeB uses described first cell and the entrained information of second cell to finish the high-order modulating configuration.
3, the method for distributing radio resource among the MBMS as claimed in claim 1, it is characterized in that, described mode of carrying the definition information of high order modulation and time slot format is: increase the definition to high-order modulating in the cell TDD ChannelisationCode LCR of message Common Transport Channel Setup Request, and increase the definition to high order modulation time slot corresponding form in cell TDD DL DPCHTime Slot Format LCR; The information that NodeB uses above-mentioned two cells to carry is finished the high-order modulating configuration.
4, the system of distributing radio resource among a kind of MBMS, comprise RNC and NodeB in the TD-SCDMA system, described RNC comprise by Iub interface to NodeB initiate Common transport channel set up process finish carrying MBMS business physical channel SCCPCH set up the unit, it is characterized in that, set up in the process at the described unit initiation Common transport channel of setting up, set up the unit sending in the Iub interface chain of command message, carry definition information high order modulation and time slot format to NodeB; NodeB comprises the dispensing unit of finishing the high-order modulating configuration according to described definition information, and wherein, described Iub interface chain of command message is CommonTransport Channel Setup Request message.
5, the system of distributing radio resource among the MBMS as claimed in claim 4, it is characterized in that, described mode of carrying the definition information of high order modulation and time slot format is: in message Common Transport Channel Setup Request, increase by second cell that is used in reference to first cell that is shown in the modulation system that corresponding SCCPCH channel uses and is used to indicate the time slot format that this SCCPCH channel uses; The dispensing unit of NodeB uses described first cell and the entrained information of second cell to finish the high-order modulating configuration.
6, the system of distributing radio resource among the MBMS as claimed in claim 4, it is characterized in that, described mode of carrying the definition information of high order modulation and time slot format is: increase the definition to high-order modulating in the cell TDD ChannelisationCode LCR of message Common Transport Channel Setup Request, and increase the definition to high order modulation time slot corresponding form in cell TDD DL DPCHTime Slot Format LCR; The information that the dispensing unit of NodeB uses above-mentioned two cells to carry is finished the high-order modulating configuration.
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WO2009065273A1 (en) * | 2007-11-21 | 2009-05-28 | Zte Corporation | A method for supporting the high order modulation and synchronization in the time division synchronous code division multiple access system |
CN101488826B (en) * | 2008-01-17 | 2012-12-05 | 展讯通信(上海)有限公司 | HS-SCCH signaling encoding and processing method in HSDPA of TD-SCDMA system |
CN101459873B (en) * | 2008-02-26 | 2011-04-20 | 中兴通讯股份有限公司 | Access method for MBMS service |
CN101742687B (en) * | 2008-11-14 | 2012-05-09 | 中兴通讯股份有限公司 | Resource allocation method during concurrence of HSDPA (high speed downlink packet access) service and MBMS (multimedia broadcast multicast service) service |
CN102026376B (en) * | 2009-09-23 | 2014-03-12 | 中兴通讯股份有限公司 | Method and system for realizing common transmission channel reconfiguration |
EP3079273B1 (en) | 2011-05-03 | 2019-01-09 | Samsung Electronics Co., Ltd. | Method and apparatus for user equipment receiving mbms service processing semi-permanent scheduling from mbsfn subframe in wireless communication system |
MX2020007459A (en) | 2018-01-12 | 2020-09-14 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Resource configuration method and apparatus, and computer storage medium. |
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