CN101047438A - Method for transceiving MBMS data using reframe in TD-SCDMA - Google Patents
Method for transceiving MBMS data using reframe in TD-SCDMA Download PDFInfo
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Abstract
A method of utilizing multi-frame to receive and transmit MBMS in TD-SCDMA includes sending multi-frame configuration information of physical channel carrying MBMS service to user device by radio network controller through MBMS point to multipoint control channel, sending out MBMS data by network side according to said multi-frame configuration information and receiving MBMS service data on follow-up secondary pubic control physical channel by user device according to physical channel multi-frame configuration information received from MBMS point to multipoint control channel.
Description
Technical field
The present invention relates to field of wireless communication, particularly the method for TD SDMA (TD-SCDMA) system bearing multimedia broadcast-multicast service (MBMS).
Background technology
Along with popularizing of large-screen multi-functional mobile phone, the application of mobile data services more and more widely, the demand of mobile communication no longer is satisfied with phone, message and surfing Internet with cell phone browse service etc., 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 (Multimedia Broadcast Multicast Service, be called for short 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).The MBMS business 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, the MBMS business 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 PTP or ptp).
The PTM mode of MBMS business uses common logical MTCH (MBMS PTM TrafficChannel, MBMS point multipoint message traffic channel) that all are added multicast service or the interested UE of broadcasting service is sent data; The MTCH logic channel is mapped to transmission channel FACH, sends at wave point by physical channel SCCPCH (Secondary CCPCH, less important Common Control Physical Channel).System side RNC (radio network controller) informs the configuration informations such as physical channel of the relevant MBMS business configuration of UE by MCCH (the MBMS point is to the multiple spot control channel) channel.
The MBMS related news of the last transmission of MCCH comprise: MBMS Access Information (MBMS access information), MBMS Common p-t-m rb Information (the public point to multi-point wireless beared information of MBMS), MBMS Current Cell p-t-m rb Information (MBMS current area P-T-M wireless loading information), MBMS General Information (MBMS general information), MBMS Modified services Information (MBMS revises business information), MBMSUnmodified services Information (the unmodified business information of MBMS) or the like.
In the existing 3GPP agreement, in MBMS Common P-t-m rb Information message, have the configuration information of the physical channel SCCPCH that the MTCH channel shone upon, concrete, in the cell MBMS of this message Secondary CCPCH Info MBMS, embody.
In existing 3GPP agreement, realize that the mode of multi-frame is: be that a physical channel defines its physical channel skew OFFSET, physical channel repetition period Repetition Period, physical channel repeat length Repetition Length.A physical channel takies resource and is: from the SFN (System Frame Number) that satisfies SFN modulo Repetitionperiod=offset, and a continuous Repetition Length system-frame.
Realize that on physical channel multiplexing mode has: the multiplex mode of the multi-frame method of salary distribution, code division multiplexing mode and upper strata transmission channel, but on the SCCPCH channel, can't realize sharing of MBMS business by time-multiplexed multi-frame mode at present, can only be defined as the mode of continuous some channelization code resource that takies certain time slot of physical channel.
Summary of the invention
The technical problem to be solved in the present invention provides the method for utilizing multi-frame transmitting-receiving MBMS data among a kind of TD-SCDMA, and the physical channel that the MBMS Traffic Channel is shone upon is supported the physical source distributing of multi-frame mode.
In order to solve the problems of the technologies described above, the invention provides the method for utilizing multi-frame to receive, send multimedia broadcast and multicast service data among a kind of TD-SCDMA, described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(i) radio network controller sends the multi-frame configuration information of the physical channel of carrying MBMS business to subscriber equipment to the multiple spot control channel by the MBMS point, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame, network side sends the MBMS data according to described multi-frame configuration information;
(ii) described subscriber equipment receives the MBMS business datum according to the multi-frame configuration information of the physical channel that receives from the MBMS point to the multiple spot control channel at follow-up less important Common Control Physical Channel.
Further, said method also can have following characteristics: also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
Further, said method also can have following characteristics: the value of described repetition period is a positive integer; The span of described repeat length: 1≤repeat length≤(repetition period-1).
Further, said method also can have following characteristics: described multi-frame configuration information by the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel, be MBMSCommon p-t-m RB Information, perhaps less important MBMS Common Control Physical Channel cell, be Secondary CCPCH Info MBMS, the perhaps public time slot cell of MBMS, promptly CommonTimeslot Info MBMS sends to subscriber equipment.
In order to solve the problems of the technologies described above, the present invention also provides the method for utilizing multi-frame to send multimedia broadcast and multicast service data among a kind of TD-SCDMA, and described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(a) radio network controller sends the multi-frame configuration information of the physical channel of carrying MBMS business to subscriber equipment to the multiple spot control channel by the MBMS point, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame;
(b) network side sends the MBMS data according to described multi-frame configuration information;
Further, said method also can have following characteristics: also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
Further, said method also can have following characteristics: described multi-frame configuration information by the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel, be MBMSCommon p-t-m RB Information, perhaps less important MBMS Common Control Physical Channel cell, be Secondary CCPCH Info MBMS, the perhaps public time slot cell of MBMS, promptly CommonTimeslot Info MBMS sends to subscriber equipment.
In order to solve the problems of the technologies described above, the present invention also provides the method for utilizing multi-frame receiving multimedia broadcast multi-cast business data among a kind of TD-SCDMA, and described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(A) subscriber equipment is preserved the multi-frame configuration information of the physical channel that receives from the MBMS point to the multiple spot control channel, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame;
(B) described subscriber equipment receives the MBMS business datum according to described multi-frame configuration information on follow-up less important Common Control Physical Channel.
Further, said method also can have following characteristics: also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
Further, said method also can have following characteristics: described subscriber equipment passes through the public point to multi-point wireless bearer messages of MBMS at the MBMS point to the multiple spot control channel, be MBMSCommon p-t-m RB Information, perhaps by less important MBMS Common Control Physical Channel cell, be Secondary CCPCH Info MBMS, perhaps by the public time slot cell of MBMS, promptly Common Timeslot Info MBMS receives the multi-frame configuration information.
Adopt the method for the invention, the physical channel Secondary CCPCH of carrying MBMS business can support the time division multiplexing of multi-frame mode to use physical radio resource.Compare the channel multiplexing that adopts sign indicating number branch mode, can not have the interference between channel code, and can save the electric weight of UE; The upper strata of comparing transmission channel is multiplexing, can avoid taking interface-free resources.
Description of drawings
Fig. 1 sends, receives the flow chart of MBMS business in the multi-frame mode for present embodiment;
Fig. 2 exemplary plot that to be present embodiment distribute the physical channel of MBMS business realizing time division multiplexing physical resource in repetition period.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
In the TD-SCDMA system, physical channel is defined as the physical resource on specific system-frame, particular time-slot, the particular channelization code.Therefore, the same channelization codes on the same time slot can realize different physical channels by time division multiplexing.For example, physical channel 1 is defined as the timeslot number 5 that System Frame Number is an odd number, busy channel sign indicating number 1; Physical channel 2 is defined as the timeslot number 5 that System Frame Number is even numbers, busy channel sign indicating number 1.Like this, physical channel 1,2 is defined on the identical timeslot number and channel code by time division multiplexing.
In typical MBMS business configuration demand, need on certain time slot of certain frequency, carry a plurality of MBMS when professional, can there be several different methods to realize the physical resource of the shared same time slot of a plurality of business.And by above-mentioned multi-frame mode, different MBMS Traffic Channel MTCH is carried on the different physical channel Secondary CCPCH, and these different SCCPCH channels are shared same physical resource by the multi-frame mode.The MTCH channel that carries different MBMS business sends in the different system frame of same frequency, same time slot.Like this, UE only need just need to receive wireless signal in its interested professional transmitting time, can reduce the power consumption of UE like this.
Present embodiment is by increasing the information unit of supporting the multi-frame definition in the message of the physical channel SCCPCH that defines carrying MBMS business, realization comes time division multiplexing to share physical resource in the multi-frame mode.
Send, receive the method for MBMS data in the multi-frame mode, as shown in Figure 1, may further comprise the steps:
Step 110, RNC sends the multi-frame configuration information of the physical channel of carrying MBMS business to UE by the MCCH channel according to service needed, at least comprise repetition period and repeat length in the described multi-frame configuration information, network side sends the MBMS data according to described multi-frame configuration information;
The cell that defines in the multi-frame configuration information is as shown in table 1, wherein: repetition period (RepetitionPeriod) cell indicates this physical channel to take the Cycle Length of system-frame physical resource, it is one or more business take system-frame on physical channel Cycle Length, in each repetition period, a channel occupancy repeat length system-frame, the value of repetition period is a positive integer, 1,2,4,8,16,32,64...... can get:, be 1 then expression takies the mode of system-frame continuously if the repetition period is set; Repeat length (Repetition Length) cell indicates this physical channel in each repetition period, takies the physical resource of what system-frame time spans continuously, and span is 1≤Repetition Length≤(Repetition Period-1).
In addition, also the physical channel offset information can be set in the multi-frame configuration information, described physical channel skew (0ffset) cell indicates this physical channel to begin to take the side-play amount of the relative repetition period starter system frame number of starter system frame number (SFN) of physical resource in a repetition period.If physical channel skew is not set, then default be since one the repetition period initial frame number place take physical resource.
The information unit of these increases is defined as option, if RNC does not carry above-mentioned cell in message or information unit, thinks that then physical channel is assigned as the method for salary distribution that takies system-frame continuously.
When one or more MBMS business are mapped to different SCCPCH channels respectively, and when these SCCPCH channels are based upon the same time slot of same frequency, RNC can select to use multi-frame to realize the resource allocation of these SCCPCH physical channels, sends the multi-frame configuration information to UE.
RNC can be at the tabulation Phy of MBMS Common P-T-M RB Information message
ChAmong the Information (physical layer message) each list item is increased above-mentioned information unit, perhaps in the cell Secondary CCPCH info MBMS (less important MBMS Common Control Physical Channel) of MBMS Common P-T-M RB Information message definition SCCPCH physical channel, perhaps in the cell Common timeslot info of the concrete time slot allocation of Secondary CCPCH info MBMS element definitions SCCPCH MBMS (the public gap information of MBMS unit), increase the information unit of above-mentioned support multi-frame.
Network side sends the MBMS data according to repetition period in the multi-frame configuration information and repeat length, in n the repetition period that is provided with, in the continuous repeat length system-frame, sends these MBMS data in distributed time slot in each repetition period.
Step 120, UE preserves the multi-frame configuration information of the physical channel that receives from the MCCH channel, receives the MBMS business datum according to this information on follow-up SCCPCH physical channel.
UE in the continuous repeat length system-frame, receives the MBMS data in distributed time slot in the repetition period of configuration, if RNC has also disposed the physical channel offset information, then UE begins to receive data from this deviation post in a repetition period.
Utilize said method to realize two MBMS service time division multiplex physical resources, these two MBMS business take physical channel resources as shown in Figure 2:
MBMS business 1 is distributed frequency 1, time slot 5, physical channel skew offset=0, repetition period Repetition period=64, repeat length Repetition Length=32.
MBMS business 2 is distributed frequency 1, time slot 5, physical channel skew offset=32, repetition period Repetition period=64, repeat length Repetion Length=32.
As seen after adopting the described method of present embodiment, Secondary CCPCH channel can adopt time division multiplexing multi-frame mode to use physical radio resource.
The present invention compares a channel multiplexing that adopts sign indicating number branch mode at the channel multiplexing of same time slot employing multi-frame mode, can not have the interference between channel code, and can save the electric weight of UE; The upper strata of comparing transmission channel is multiplexing, can avoid taking interface-free resources.
Table 1 (overstriking person is for newly-increased in the table)
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 (10)
1, utilize multi-frame to receive, send the method for multimedia broadcast and multicast service data among a kind of TD-SCDMA, described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(i) radio network controller sends the multi-frame configuration information of the physical channel of carrying MBMS business to subscriber equipment to the multiple spot control channel by the MBMS point, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame, network side sends the MBMS data according to described multi-frame configuration information;
(ii) described subscriber equipment receives the MBMS business datum according to the multi-frame configuration information of the physical channel that receives from the MBMS point to the multiple spot control channel at follow-up less important Common Control Physical Channel.
2, the method for claim 1, it is characterized in that, also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
3, the method for claim 1 is characterized in that, the value of described repetition period is a positive integer; The span of described repeat length: 1≤repeat length≤(repetition period-1).
4, method as claimed in claim 1 or 2, it is characterized in that, described multi-frame configuration information by the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel, be MBMS Common p-t-m RB Information, perhaps less important MBMS Common Control Physical Channel cell, i.e. Secondary CCPCH Info MBMS, the perhaps public time slot cell of MBMS, be Common Timeslot Info MBMS, send to subscriber equipment.
5, utilize multi-frame to send the method for multimedia broadcast and multicast service data among a kind of TD-SCDMA, described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(a) radio network controller sends the multi-frame configuration information of the physical channel of carrying MBMS business to subscriber equipment to the multiple spot control channel by the MBMS point, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame;
(b) network side sends the MBMS data according to described multi-frame configuration information;
6, method as claimed in claim 5, it is characterized in that, also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
7, as claim 5 or 6 described methods, it is characterized in that, described multi-frame configuration information by the MBMS point to the public point to multi-point wireless bearer messages of the MBMS on the multiple spot control channel, be MBMS Common p-t-m RB Information, perhaps less important MBMS Common Control Physical Channel cell, i.e. Secondary CCPCH Info MBMS, the perhaps public time slot cell of MBMS, be Common Timeslot Info MBMS, send to subscriber equipment.
8, utilize the method for multi-frame receiving multimedia broadcast multi-cast business data among a kind of TD-SCDMA, described multimedia broadcast-multicast service may further comprise the steps hereinafter to be referred as MBMS:
(A) subscriber equipment is preserved the multi-frame configuration information of the physical channel that receives from the MBMS point to the multiple spot control channel, comprise repetition period and repeat length in the described multi-frame configuration information, the described repetition period represents that physical channel takies the Cycle Length of system-frame physical resource, in each repetition period, the described repeat length of a channel occupancy system-frame;
(B) described subscriber equipment receives the MBMS business datum according to described multi-frame configuration information on follow-up less important Common Control Physical Channel.
9, method as claimed in claim 8, it is characterized in that, also comprise the physical channel offset information in the described multi-frame configuration information, described physical channel offset information represents that this physical channel begins to take the side-play amount of the starter system frame number of physical resource with respect to described repetition period starter system frame number in a repetition period.
10, method as claimed in claim 8 or 9, it is characterized in that, described subscriber equipment passes through the public point to multi-point wireless bearer messages of MBMS at the MBMS point to the multiple spot control channel, be MBMS Common p-t-m RB Information, perhaps by less important MBMS Common Control Physical Channel cell, promptly Secondary CCPCH Info MBMS perhaps passes through the public time slot cell of MBMS, be Common Timeslot Info MBMS, receive the multi-frame configuration information.
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| WO2009111988A1 (en) * | 2008-03-14 | 2009-09-17 | 中兴通讯股份有限公司 | Configuration and indication method of a single frequency network mbms frame and a terminal obtaining method |
| WO2010015135A1 (en) * | 2008-08-07 | 2010-02-11 | 中兴通讯股份有限公司 | A method for transmitting resource configuration information of multimedia broadcast multicast service |
| CN101465800B (en) * | 2007-12-21 | 2011-06-15 | 鼎桥通信技术有限公司 | Resource configuration method |
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| CN101577858B (en) * | 2008-05-09 | 2012-06-06 | 中兴通讯股份有限公司 | Method and device for indicating attribute of wireless subframe in multicast/broadcast MBSFN frame |
| WO2012130024A1 (en) * | 2011-03-31 | 2012-10-04 | 北京新岸线无线技术有限公司 | Method and device for data transmission |
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| CN101742410B (en) * | 2008-11-21 | 2013-02-27 | 中兴通讯股份有限公司 | Method for receiving and transmitting multimedia broadcast/multicast service control message |
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| US7546132B2 (en) * | 2004-04-19 | 2009-06-09 | Lg Electronics, Inc. | Communication of point to multipoint service information in wireless communication system |
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| WO2009111988A1 (en) * | 2008-03-14 | 2009-09-17 | 中兴通讯股份有限公司 | Configuration and indication method of a single frequency network mbms frame and a terminal obtaining method |
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