CN102291685B - Method and device for transmitting service - Google Patents
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- CN102291685B CN102291685B CN201110266051.5A CN201110266051A CN102291685B CN 102291685 B CN102291685 B CN 102291685B CN 201110266051 A CN201110266051 A CN 201110266051A CN 102291685 B CN102291685 B CN 102291685B
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Abstract
The invention discloses service time division multiplexing method and device, and a method and a device for transmitting a service, which are used for solving the problem in the prior art that a base station cannot effectively notify the sending time of various services and the length of the cyclic prefix of each sub-frame under the condition of the time division multiplexing of the various services. The service time division multiplexing method comprises the following steps of: selecting part or all of wireless frames in a time unit as specific wireless frames; and selecting part or all of sub-frames in the specific wireless frames as specific sub-frames for transmitting specific services; and the specific services are multimedia broadcast multicast services, or unicast services, or one or more services transmitted in a multimedia broadcast multicast way. The method and the device are used for transmitting the various services in the time division multiplexing way, and notifying the sending time information of the various services and the length of the cyclic prefix of each sub-frame, so that a user terminal can accurately know the service for which one sub-frame is used and correctly demodulate the sub-frame.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of service time division multiplex method and device.
Background technology
The third generation organizes partner to plan (3GPP, Third Generation Partnership Projects) in 2005, started the third generation (3G, 3rd Generation) Long Term Evolution research project (LTE, Long Term Evolution), access technology (E-UTRA with evolution, Evolved Universal Terrestrial Radio Access) and access network (E-UTRAN, Evolved Universal Terrestrial Radio Access Network) provide better support for operator and the ever-increasing business demand of user.
In LTE system, downlink communication business can be divided into two large classes, unicast service (Unicast service) and multimedia broadcast-multicast service (MBMS, Multimedia Broadcast Multicast Service), unicast service be a data source to the business of the point-to-point of a user terminal to transmit data, MBMS business refers to that a data source is to the point-to-multipoint business of a plurality of user terminal to transmit data.The introducing of MBMS business, is to share in order to realize Internet resources, and described network comprises core net and wireless access network, with the least possible resource, realizes the media user Terminal Service that has same requirements as much as possible.In wireless access network, MBMS business, by using Common transport channel and public wireless to carry, can realize classes of messages multicast and the broadcast of plain text low rate, also can realize multicast and the broadcast of the multimedia service of higher rate.
At present, for MBMS business, 3GPP standard 25.814 is supported two kinds of cell transmission modes: a kind of mode is many cell transmission (Multi-cell transmission) modes, i.e. a plurality of communities same frequency sending simultaneously MBMS business; Another kind of mode is single cell transmission (Single-cell transmission) mode, and single subdistrict sends MBMS business, and does not consider the transmission situation of other communities.
The data-transmission mode of MBMS business comprises two kinds, a kind of is mixed carrier (MC, Mixed Carrier) pattern, be that MBMS business and unicast service are used same carrier wave transmission data jointly, another kind is single carrier wave (DC, Dedicated Carrier) pattern, MBMS business is independently used carrier transmission data.The in the situation that of MC pattern, MBMS business and unicast service time division multiplexing, according to the decision of 3GPP meeting, these two kinds of business are that subframe (subframe) level is time-multiplexed, every kind of business at least takies a subframe.If which kind of business base station does not send each subframe of signaling for, can cause unicast service user terminal and MBMS user terminal all to attempt to read own service information in the whole transmission time, the electric energy of waste user terminal.If the information of a bit is set to each subframe, notify this subframe for which kind of business, for example than peculiar 0 and 1 two states, distinguish corresponding two business for one, needed amount of information can be very large.
In addition, down direction in LTE physical layer, adopted OFDM (OFDM, Orthogonal Frequency Division Multiplexing) technology, OFDM technology is divided into many orthogonal sub-channels by given channel in frequency domain, and allow subcarrier spectrum to partly overlap, as long as meet between subcarrier mutually orthogonal, can isolate data-signal from the subcarrier of aliasing, in the middle of ofdm system operation, first symbol is carried out to serial/parallel conversion, form the sub data flow of a plurality of low speed, each data flow takies a subcarrier, sub data flow can pass through an inverse discrete Fourier transform (IDFT to the mapping of subcarrier, Inverse Discrete Fourier Transform) or inverse fast Fourier transform (IFFT, Inverse Fast Fourier Transform) realize, it uses Cyclic Prefix (CP simultaneously, Cyclic Prefix) as protection interval, greatly reduce and even eliminated intersymbol interference, and guaranteed the orthogonality of each interchannel, thereby greatly reduced interchannel interference.
In unicast traffic, and send in the subframe of MBMS business of single cell transmission, the length of Cyclic Prefix only need to meet the demand of this community, in the MBMS of many cell transmission service subframe, signal demand is through longer transmission path, this just need to overcome intersymbol interference by longer Cyclic Prefix, and user terminal must be known the length of the CP of a subframe, could correctly carry out demodulation.
To sum up, prior art is in the time-multiplexed situation of multiple business, and base station cannot be notified the transmitting time of miscellaneous service effectively, and the length of the Cyclic Prefix of each subframe.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of transport service, and a kind of base station, in order to solve prior art in the time-multiplexed situation of multiple business, base station cannot be notified the transmitting time of miscellaneous service effectively, and the problem of the length of the Cyclic Prefix of each subframe.
The embodiment of the method for a kind of transport service of the present invention, comprising:
Choose the part or all of radio frames in a time quantum, as particular radio frames;
Choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
According to time division multiplexing mode, send business;
Send the positional information of described particular radio frames and the positional information of described specific sub-frame;
Wherein, described time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number;
The positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
The device embodiment of a kind of transport service of the present invention, comprising:
Time-division multiplexing unit, for choosing the part or all of radio frames in a time quantum, as particular radio frames; And, choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions; Wherein, described time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number;
Transmission unit, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit; And, send the positional information of described particular radio frames and the positional information of described specific sub-frame; The positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
A kind of base station embodiment of the present invention, comprising:
The device of transport service, for choosing the part or all of radio frames in a time quantum, as particular radio frames; Choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions; And send business according to time division multiplexing mode, wherein, described time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number; And, sending the positional information of described particular radio frames and the positional information of described specific sub-frame, the positional information of described particular radio frames is the quantity of particular radio frames in described time quantum or is spaced apart 2
m, the quantity of particular radio frames or interval described in each time quantum, and 0≤m≤M.
The embodiment of the present invention, by choosing the part or all of radio frames in a time quantum, as particular radio frames, choose the part or all of subframe in described particular radio frames, as specific sub-frame, be used for sending specific transactions, described specific transactions is multimedia broadcast-multicast service, or unicast service, or the technical scheme of one or more business of transmitting in multimedia broadcasting and multicast mode, a kind of service time division multiplex mode is provided, and, the embodiment of the present invention is by sending business according to this time division multiplexing mode, and send the positional information of described particular radio frames and/or the positional information of described specific sub-frame, wherein, described time quantum comprises several radio frames, the one or more technical schemes that can distribute to the subframe of described specific transactions of described radio frames, realizing base station sends to multiple business in the situation of user terminal by time division multiplexing mode, the user terminal of miscellaneous service can obtain the transmission time of the business self needing exactly, thereby obtain the business datum self needing, saved the electric energy of user terminal, the present invention is simultaneously by sending the length information of the Cyclic Prefix of specific sub-frame in described time quantum, make user terminal can know the length of the CP of each subframe, thereby correctly demodulation.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of service time division multiplex method of the present invention;
Fig. 2 is the schematic flow sheet of the method for a kind of transport service of the present invention;
Fig. 3 is the schematic flow sheet of the embodiment of the method for a kind of transport service of the present invention;
Fig. 4 is specific sub-frame and nonspecific subframe multiplexer mode schematic diagram in the embodiment of the method for a kind of transport service of the present invention;
Fig. 5 is information and business data transmission time delay schematic diagram in the embodiment of the method for a kind of transport service of the present invention;
Fig. 6 is the schematic flow sheet of the embodiment of the method for a kind of transport service of the present invention;
Fig. 7 is the schematic flow sheet of the embodiment of the method for a kind of transport service of the present invention;
Fig. 8 is the schematic flow sheet of the embodiment of the method for a kind of transport service of the present invention;
Fig. 9 is the structural representation of a kind of service time division multiplex device of the present invention embodiment;
Figure 10-A is the structural representation of the device embodiment of a kind of transport service of the present invention;
Figure 10-B is the structural representation of the device embodiment of a kind of transport service of the present invention;
Figure 11-A is the structural representation of transmission unit in the device embodiment of a kind of transport service of the present invention;
Figure 11-B is the structural representation of transmission unit in the device embodiment of a kind of transport service of the present invention;
Figure 12 is the structural representation of a kind of base station embodiment of the present invention.
Embodiment
In the time-multiplexed situation of multiple business, in order to make user terminal know that a subframe, for which kind of business, the invention provides a kind of service time division multiplex method and device, and a kind of method of transport service and device.
Referring to Fig. 1, a kind of method of service time division multiplex in the present invention, comprises the following steps:
S101, choose the part or all of radio frames in a time quantum, as particular radio frames;
The size of described time quantum can change, and the quantity of the radio frames that described time quantum comprises can change;
S102, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode; Especially, when described specific transactions is multimedia broadcast-multicast service, or while being unicast service, the problem that the present invention exists for solving described prior art;
According to the characteristic of described specific transactions, can predetermine the distribution of described particular radio frames in described time quantum, such as, base station and user terminal all have mapping table or mapping ruler in advance, make the quantity of particular radio frames in every given described time quantum, described base station and user terminal can be tabled look-up and obtain according to mapping table, or according to mapping ruler, to calculate which radio frames be particular radio frames.For example described mapping ruler can described particular radio frames be to be spacedly distributed, and like this, as long as determine the number of these radio frames or the interval of these radio frames, just can determine the particular location of these radio frames, reaches the object of simplifying reuse plan; Also can not adopt this mode of predetermining, such as the mode etc. that adopts signaling;
In order further to simplify reuse plan, may be required in described in each in particular radio frames, described specific sub-frame distributes identical, like this, as long as determine the position of specific sub-frame in a particular radio frames, just can determine the particular location of all specific sub-frame of described time quantum; Can certainly not require that specific sub-frame distributes identical;
Further, can require the distribution in the radio frames of described specific sub-frame under it is to predetermine, without what notify, such as, base station and user terminal all have mapping table or mapping ruler in advance, make the quantity of specific sub-frame in every given particular radio frames, described base station and user terminal can be tabled look-up and obtain according to mapping table, or according to mapping ruler, calculating which subframe is specific sub-frame, for example, can require described specific sub-frame, in radio frames under it, be that be spacedly distributed or approximate being spacedly distributed, as long as determine quantity or the interval of specific sub-frame in a particular radio frames, just can determine the particular location of specific sub-frame, below will be spacedly distributed and be similar to be spacedly distributed and unify to be called to be spacedly distributed.Also can not adopt this mode of predetermining, such as the mode etc. that adopts signaling.
Referring to Fig. 2, the method for a kind of transport service of the present invention, comprises the following steps:
S201, choose the part or all of radio frames in a time quantum, as particular radio frames;
Wherein, described time quantum comprises several radio frames, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number;
S202, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
Described specific transactions can be multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode; Especially, when described specific transactions is multimedia broadcast-multicast service, or while being unicast service, the present invention is for solving the problem of prior art;
According to the characteristic of specific transactions, can predetermine the distribution of described particular radio frames in described time quantum, such as, base station and user terminal all have mapping table or mapping ruler in advance, make the quantity of particular radio frames in every given described time quantum, described base station and user terminal can be tabled look-up and obtain according to mapping table, or according to mapping ruler, calculating which radio frames is particular radio frames, for example described mapping ruler can described particular radio frames be to be spacedly distributed, like this, as long as determine the number of these radio frames or the interval of these radio frames, just can determine the particular location of these radio frames, reach the object of simplifying reuse plan, also can not adopt this mode of predetermining, such as the mode etc. that adopts signaling,
In order further to simplify reuse plan, may be required in described in each in particular radio frames, described specific sub-frame distributes identical, like this, as long as determine the position of specific sub-frame in a particular radio frames, just can determine the particular location of all specific sub-frame of described time quantum;
Further, can require the distribution in the radio frames of described specific sub-frame under it is to predetermine, without what notify, such as, base station and user terminal all have mapping table or mapping ruler in advance, make the quantity of specific sub-frame in every given particular radio frames, described base station and user terminal can be tabled look-up and obtain according to mapping table, or according to mapping ruler, calculating which subframe is specific sub-frame, for example, can require described specific sub-frame, in radio frames under it, be that be spacedly distributed or approximate being spacedly distributed, as long as determine quantity or the interval of specific sub-frame in a particular radio frames, just can determine the particular location of specific sub-frame, below will be spacedly distributed and be similar to be spacedly distributed and unify to be called to be spacedly distributed, also can not adopt this mode of predetermining, such as the mode etc. that adopts signaling,
S203, according to above-mentioned time division multiplexing mode, send business;
S204, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame;
Preferably, the positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum;
Preferably, the positional information of described specific sub-frame is the described specific sub-frame quantity in radio frames or interval under it;
Preferably, the positional information of described particular radio frames and/or the positional information of described specific sub-frame are transmitted by broadcast channel;
Positional information hereinafter referred to as described particular radio frames is the first information, and the positional information of described specific sub-frame is the second information;
Described broadcast channel comprises main broadcast channel, inferior broadcast channel and Dynamic Broadcast Channel; The described first information is by any one transmission of described three kinds of broadcast channels, and described the second information exchange is crossed any one transmission of described three kinds of broadcast channels;
Preferably, described the second information exchange is crossed described main broadcast channel transmission, and the described first information transmits by described broadcast channel or Dynamic Broadcast Channel;
The broadcast channel is here transmission channel (transport channel), three kinds of transmission channels need to be mapped to one or more physical channel and transmit, for example, main broadcast channel is mapped to the main broadcast channel of physics, Dynamic Broadcast Channel is mapped to physics and shares data channel, and inferior broadcast channel is mapped to physics time broadcast channel or physics is shared data channel;
Preferably, the method for this transport service further comprises: the length information that sends the Cyclic Prefix of specific sub-frame in described time quantum;
Preferably, the length information of described Cyclic Prefix is placed on broadcast channel and is transmitted;
Take specific transactions MBMS business and unicast service time division multiplexing is example: if the business in all MBMS subframes (sending the specific sub-frame of MBMS business) is all carried out many cell transmission, described MBMS subframe is all used long loop prefix, the MBMS business of carrying out single cell transmission sends in clean culture subframe, the so described first information and described the second information are also for notifying the length of Cyclic Prefix, all MBMS subframes are used long loop prefix, and all clean culture subframes are used short Cyclic Prefix;
If the business in MBMS subframe may be carried out many cell transmission, also may carry out single cell transmission, suppose so in described time quantum, business in all MBMS subframes is all carried out many cell transmission, or all carry out single cell transmission, the method of this transport service further comprises the length information that sends the Cyclic Prefix of specific sub-frame in described time quantum, hereinafter referred to as the 3rd information, only need to increase by a bit signalling, notify these MBMS subframes use long loop prefix or use short Cyclic Prefix, user can be known the CP length of each subframe in whole time quantum, for example this bit signalling is set to the long CP of 0 expression, be set to the short CP of 1 expression, or conversely, this bit signalling is set to the long CP of 1 expression, be set to the short CP of 0 expression.
Embodiment mono-:
Referring to Fig. 3, the method for a kind of transport service of the present invention, comprises step:
S301, choose the part or all of radio frames in a time quantum, as particular radio frames;
S302, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
S303, according to above-mentioned time division multiplexing mode, send business;
S304, by sending the value of signaling m, send the positional information of described particular radio frames, wherein 0≤m≤M;
S continuous radio frames formed to a time quantum, S=2
m, can get M and equal 10 or other numerical value;
Described particular radio frames uniformly-spaced, with 2
mrepresent the quantity of particular radio frames in described time quantum, or represent the interval of particular radio frames described in each, if with 2
mthe quantity that represents particular radio frames in described time quantum, described in each, the interval of particular radio frames is 2
m-m; Otherwise, if with 2
mthe interval that represents each particular radio frames, in described time quantum, the quantity of particular radio frames is 2
m-m, wherein, 0≤m≤M;
S305, by sending the value of signaling Np, send the positional information of described specific sub-frame, 0≤Np≤R wherein, Np represents the number of specific sub-frame in particular radio frames;
When Np=0, represent not have specific sub-frame in whole time quantum, in this case, the value of m is without indication;
Wherein R represents that described radio frames comprises R the subframe that can distribute to described specific transactions, a radio frames takies the time of 10ms, when all subframes can be distributed to described specific transactions, in LTE, the value of R is 10 for fixing tentatively, when some subframes cannot be for specific transactions, for example, as synchronizing channel (SCH, when Synchronization Channel) subframe at place can only be for clean culture subframe, the value of above R is the number of all the other subframes in a radio frames, for example a radio frames has in two subframes and has synchronizing channel, and the value of R becomes 8;
In the present embodiment, in the particular radio frames of specific sub-frame under each, distribute identical;
With specific sub-frame approximate being spacedly distributed as example in affiliated particular radio frames, when the value of known Np is described, in particular radio frames of how to confirm, which subframe is specific sub-frame below:
A kind of simple way is,
Sequence number is that the subframe of r is specific sub-frame, and wherein, the value of r is calculated by following formula:
R wherein
0position for first specific sub-frame in described particular radio frames, represents by the sequence number of this subframe, conventionally, can get r
0=0;
When the value of R is not the quantity of all subframes in a radio frames, after the value of known Np, the position of specific sub-frame still can be determined according to said method, but the sequence number that in formula, the sequence number of subframe is described all the other subframes;
As shown in Figure 4, for specific sub-frame in the present embodiment and nonspecific subframe multiplexer mode schematic diagram, for example, notify m=2, represent that particular radio frames is spaced apart 4 radio frames, and first radio frames of this time quantum comprises specific sub-frame; Notice Np=4, is illustrated in particular radio frames, have 4 specific sub-frame, and these 4 specific sub-frame is spacedly distributed, and wherein first subframe is specific sub-frame, i.e. r
0=0.
The information that described step S304 sends is the described first information, and the information that described step S305 sends is described the second information, and the described first information and described the second information exchange are crossed broadcast channel transmission;
Described broadcast channel comprises main broadcast channel, inferior broadcast channel and Dynamic Broadcast Channel; The described first information is by any one transmission of described three kinds of broadcast channels, and described the second information exchange is crossed any one transmission of described three kinds of broadcast channels;
Preferably, when the first information and or the second information exchange cross the transmission of time broadcast channel, need to predetermine described broadcast channel and be placed in the subframe of long loop prefix, or be placed in the subframe of short Cyclic Prefix;
Preferably, when the first information and or the second information exchange spend Dynamic Broadcast Channel when transmission, stipulate that described Dynamic Broadcast Channel is placed in the subframe of long loop prefix, or be placed in the subframe of short Cyclic Prefix;
When the described first information and described the second information are transmitted on all by main broadcast channel, because the bit number that main broadcast channel holds is limited, it is generally acknowledged and only have 40～50 bits, therefore described positional information possibly cannot all be placed on a main broadcast channel, this just need to split into many parts by information, every part is transmitted on a main broadcast channel, and main broadcast channel occurs once in each radio frames, therefore described positional information needs the time tranfer of a plurality of radio frames, this time is exactly that information sends period T, as shown in Figure 5, for positional information in the present embodiment and business data transmission time delay schematic diagram, described signaling repeats in a time quantum to send, within first transmission cycle of a time quantum, the position of specific sub-frame sends the signaling in cycle by last of a upper time quantum, therefore signaling content to have a duration be T in the position of the specific sub-frame of its indication relatively in advance,
Because the span of m is 0≤m≤M, the span of Np is 0≤Np≤R, and the bit number that therefore transmitting described positional information needs is log
2(M+1)+log
2(R+1);
User terminal is according to the value of described m, be quantity or the interval of described particular radio frames, determine the position of particular radio frames in this time quantum, according to the value of described Np, be quantity or the interval of specific sub-frame, determine the position of specific sub-frame, and read specific transactions in the subframe of transmission specific transactions, in the subframe of other business of transmission, read other business;
Embodiment bis-:
Referring to Fig. 6, the method for a kind of transport service of the present invention, comprises step:
S601, choose the part or all of radio frames in a time quantum, as particular radio frames;
S602, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
S603, according to above-mentioned time division multiplexing mode, send business;
S604, by sending the value of signaling m, send the positional information of described particular radio frames, wherein 0≤m≤M+1, when m=M+1, represents that whole time quantum does not exist specific sub-frame;
S continuous radio frames formed to a time quantum, S=2
m, can get M and equal 10 or other numerical value;
Described particular radio frames uniformly-spaced, with 2
mrepresent the quantity of particular radio frames in described time quantum, or represent the interval of each particular radio frames, if with 2
mthe quantity that represents particular radio frames in described time quantum, the interval of each particular radio frames is 2
m-m; Otherwise, if with 2
mthe interval that represents each particular radio frames, in described time quantum, the quantity of particular radio frames is 2
m-m, wherein, 0≤m≤M+1, when m=M+1, represents that whole time quantum does not exist specific sub-frame;
S605, by sending the value of signaling Np, send the positional information of described specific sub-frame, 1≤Np≤R wherein, Np represents the number of specific sub-frame in particular radio frames; Wherein R represents that described radio frames comprises R the subframe that can distribute to described specific transactions;
When m=M+1, the value of Np is without indication;
In the present embodiment, in the particular radio frames of specific sub-frame under each, distribute identical;
After the value of known Np, determine that the method for specific sub-frame position is identical with method described in embodiment mono-;
The information that described step S601 sends is the described first information, and the information that described step S602 sends is described the second information, and the described first information and described the second information exchange are crossed broadcast channel transmission; Concrete transmission means is identical with method described in embodiment mono-;
Because the span of m is 0≤m≤M+1, the span of Np is 1≤Np≤R, and the total bit number that therefore transmits described positional information is
Embodiment tri-:
The method of a kind of transport service of the present invention, comprises step:
S701, choose the part or all of radio frames in a time quantum, as particular radio frames;
S702, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
S703, according to above-mentioned time division multiplexing mode, send business;
S704, the value of combining signaling A by transmission, send the positional information of particular radio frames and/or the positional information of described specific sub-frame;
S continuous radio frames forms time quantum, wherein a S=2
m, 2
mthe number that represents described time quantum particular radio frames, or the interval of expression particular radio frames; Np represents the number of specific sub-frame in particular radio frames, and R represents that described radio frames comprises R the subframe that can distribute to described specific transactions;
In order further to save signaling, can adopt associating signaling indication method to indicate the position of specific sub-frame, by signaling A, send the value of Np and m, concrete grammar is as follows:
If 0≤m≤M, 0≤Np≤R, and R≤M+1,
Wherein, when Np=0, represent not exist in whole time quantum specific sub-frame;
If 0≤m≤M, 0≤Np≤R, and M+1≤R,,
Wherein, when Np=0, represent not exist in whole time quantum specific sub-frame;
If 0≤m≤M+1,1≤Np≤R, and R≤M+1,,
Wherein, when m=M+1, represent not exist in whole time quantum specific sub-frame;
If 0≤m≤M+1,1≤Np≤R, and M+1≤R,,
Wherein, when m=M+1, represent not exist in whole time quantum specific sub-frame;
The situation of R=M+1, can in order to upper any method for expressing;
The following describes after the value of known signaling A the value of how to confirm m and Np:
Suppose given two integer variable X and Y, wherein a
1≤ X≤a
2, b
1≤ Y≤b
2, a
2-a
1≤ b
2-b
1;
Function A is by formula:
A＝(b2-b1+1)(X-a1)+(Y-b1+1)(5)
Obtain, the value of given A, can be obtained by following Formula Solution the value of X and Y:
Y＝Amod(b2-b1+1)(7)
When the coding of signaling A use be formula (1) or (3) time, Np=X, m=Y, utilizes formula (6) (7) can obtain the value of Np and m;
When the coding of signaling A use be formula (2) or (4) time, m=X, Np=Y, utilizes formula (6) (7) can obtain the value of Np and m;
Can obtain thus, when the signaling of transmission is A, the bit number that transmitting described positional information needs is
amount of information that may be when sending respectively signaling m and Np
or
few;
For example, work as R=10, M=8,9,10,11,16,17 ... time, by this associating signaling, can save simply 1 bit, for example, when M=1,0≤A≤121, A can represent with 7 bits, and m and Np need respectively 4 bits to represent, so adopt associating signaling can save 1 bit information;
In the present embodiment, particular radio frames uniformly-spaced;
In the present embodiment, in the particular radio frames of specific sub-frame under each, distribute identical;
After the value of known Np, determine that the method for specific sub-frame position is identical with method described in embodiment mono-;
The information that described signaling A sends comprises the first information and the second information, and the described first information and described the second information exchange are crossed broadcast channel transmission; Concrete transmission means is identical with method described in embodiment mono-;
Embodiment tetra-:
Referring to Fig. 8, the method for a kind of transport service of the present invention, comprises step:
S801, choose the part or all of radio frames in a time quantum, as particular radio frames;
S802, choose the part or all of subframe in described particular radio frames, as specific sub-frame, for sending specific transactions;
S803, according to above-mentioned time division multiplexing mode, send business;
S804, by sending the value of signaling m, send the positional information of described particular radio frames, wherein 0≤m≤M+1, when m=M+1, represents that whole time quantum does not exist specific sub-frame;
S continuous radio frames formed to a time quantum, S=2
m, can get M and equal 10 or other numerical value;
Described particular radio frames uniformly-spaced, with 2
mrepresent the quantity of particular radio frames in described time quantum, or represent the interval of each particular radio frames, if with 2
mthe quantity that represents particular radio frames in described time quantum, the interval of each particular radio frames is 2
m-m; Otherwise, if with 2
mthe interval that represents each particular radio frames, in described time quantum, the quantity of particular radio frames is 2
m-m, wherein, 0≤m≤M+1, when m=M+1, represents that whole time quantum does not exist specific sub-frame;
S805, by sending the value of signaling Np, send the positional information of described specific sub-frame, 0≤Np≤R wherein, Np represents the number of specific sub-frame in this signaling place radio frames, wherein R represents that described radio frames comprises R the subframe that can distribute to described specific transactions;
In the present embodiment, in the particular radio frames of specific sub-frame under each, distribute identical;
The information that step S804 sends is the first information, and the information that step S805 sends is the second information, and the described first information and described the second information exchange are crossed broadcast channel transmission; Concrete transmission means is identical with method described in embodiment mono-;
Preferably, described the second information is placed on main broadcast channel and is transmitted, the described first information is placed on time broadcast channel or Dynamic Broadcast Channel and is transmitted;
With the first information, be placed on time broadcast channel and transmit below, the second information is placed on and on bamboo broadcast channel, is transmitted as example and describes:
Described user terminal first receives main broadcast channel, obtain the value of Np, learn thus the CP length of each subframe in this main broadcast channel place radio frames, if current radio frames comprises time broadcast channel, described user terminal can solve the value of m, otherwise described user terminal receives continuously main broadcast channel and checks, until find time broadcast channel, solve the value of m;
When Np ≠ 0, in conjunction with the value of m, described user terminal can obtain the position of specific sub-frame in described time quantum; When Np=0, if m=M+1 represents that described time quantum does not have specific sub-frame, described user terminal has also obtained interior each subframe of described time quantum for the information of which kind of business; When Np=0, if m ≠ M+1, described user terminal can be learnt the position of the radio frames of Np ≠ 0 according to the value of m, then in such radio frames, reads the Np value on main broadcast channel, thereby obtains the position of specific sub-frame in described time quantum;
It should be noted that, Np can be for representing the number of specific sub-frame in any one specific radio frames, for example, represent after the radio frames of Np place the number of specific sub-frame in first or several radio frames.
Terminal is received after the value of Np, can be known the number of specific sub-frame in this specific radio frames.Terminal can be learnt the CP length of each subframe in this radio frames.Afterwards, terminal obtains whether value and the check Np of m are that the processes such as null value and said method are in full accord.Finally, terminal can be known the Np value of non-zero and the value of m, thereby knows the position of specific sub-frame in described time quantum.
Preferably, the value of described Cyclic Prefix length information and Np is placed on to same channel.
The present invention also provides with described a kind of service time division multiplex method and has installed accordingly, installs accordingly with the method for described a kind of transport service, and a kind of base station;
A kind of service time division multiplex device of the present invention, comprising:
Radio frames is chosen unit, for choosing the part or all of radio frames in a time quantum, as particular radio frames;
Subframe is chosen unit, and for choosing the part or all of subframe of described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions.
The device of a kind of transport service of the present invention, comprising:
Time-division multiplexing unit, for choosing the part or all of radio frames in a time quantum, as particular radio frames; And, choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions;
Transmission unit, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit; And, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame.
A kind of base station of the present invention, comprising:
The device of transport service, for choosing the part or all of radio frames in a time quantum, as particular radio frames; Choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions; And send business according to above-mentioned time division multiplexing mode; And, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame.
Enumerate the embodiment of several apparatus of the present invention below;
Embodiment five:
Referring to Fig. 9, the device 91 of a kind of service time division multiplex of the present invention, comprising: radio frames chooses unit 911 and subframe is chosen unit 912;
Described radio frames is chosen unit 911, for choosing the part or all of radio frames in a time quantum, as particular radio frames;
Described subframe is chosen unit 912, and for choosing the part or all of subframe of described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions;
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode.
Embodiment six:
Referring to Figure 10-A, the device 101 of a kind of transport service of the present invention, comprising: time-division multiplexing unit 1011 and transmission unit 1012;
Described time-division multiplexing unit 1011, for choosing the part or all of radio frames in a time quantum, as particular radio frames; And, choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions;
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode;
Described transmission unit 1012, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit 1011; And, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame.
Preferably, referring to Figure 10-B, the device 101 of a kind of transport service of the present invention further comprises positional information generation unit 1013;
Described positional information generation unit 1013, described particular radio frames and described specific sub-frame for choosing according to described time-division multiplexing unit 1011, generate the positional information of described particular radio frames and/or the positional information of described specific sub-frame;
Preferably, referring to Figure 11-A, described transmission unit 1012 can comprise: business transmission unit 10121 and positional information transmission unit 10122;
Described business transmission unit 10121, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit 1011;
Described positional information transmission unit 10122, for sending the positional information of described particular radio frames and/or the positional information of described specific sub-frame;
Preferably, referring to Figure 11-B, described transmission unit 1012 can further include: prefix length transmission unit 10123;
Described prefix length transmission unit 10123, for sending the information of specific sub-frame Cyclic Prefix length described in the described time quantum of indication.
Embodiment seven:
Referring to Figure 12, a kind of base station 121 of the present invention, comprising: the device 1211 of transport service;
The device 1211 of described transport service comprises: time-division multiplexing unit 12111 and transmission unit 12112;
The device 1211 of described transport service, for choosing the part or all of radio frames in a time quantum, as particular radio frames; Choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions; And send business according to above-mentioned time division multiplexing mode; And, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame;
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode;
Wherein, described time-division multiplexing unit 12111, for choosing the part or all of radio frames in a time quantum, as particular radio frames; And, choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions;
Described transmission unit 12112, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit 12111; And, send the positional information of described particular radio frames and/or the positional information of described specific sub-frame.
In sum, the invention provides a kind of service time division multiplex method and device, and a kind of method and device that sends business, especially, the invention provides MBMS business and unicast service time-division multiplexing method and device, and the method and the device that send MBMS business and unicast service, avoid unicast service user and MBMS service-user in the transmission time of the other side's business, to read the business information of oneself, be user terminal saves energy; The method of notifying a subframe CP length provided by the invention, guarantees that user terminal can correctly carry out demodulation; The mode of communication approach provided by the invention, information timing and information source coding, while sending business datum in the situation that of having guaranteed to adopt MBMS business and unicast service time division multiplexing in base station, user terminal can obtain the transmitting time of the business datum self needing exactly, and read corresponding business datum, saved resource.
The specific transactions that the present invention mentions, comprises the business of certain content, or with the business of specific transmission means transmission, also comprises the business with the certain content of specific transmission means transmission;
The business of transmitting with ad hoc fashion comprises a variety of, the business of for example transmitting in multimedia broadcasting and multicast mode, or the business of transmitting with mode of unicast; Ad hoc fashion can also refer to antenna configuration mode, running time-frequency resource, code resource, empty resource occupancy mode frequently etc.; Ad hoc fashion can also refer to the object terminal of business, for example, be transferred to one or more business of certain specific user or particular group;
The business of certain content comprises any one or multiple multimedia broadcast-multicast service, streaming media service for example, data sharing business etc.; Can also comprise any one or multiple unicast service;
The business of the certain content transmitting with certain specific transmission means, can know by inference according to the above-mentioned explanation to ad hoc fashion and certain content, a kind of speech business of for example propagating with mode of unicast.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (18)
1. a method for transport service, is characterized in that,
Receive the specific transactions that base station sends, described specific transactions sends in specific sub-frame, described specific sub-frame is the part or all of subframe of choosing from particular radio frames, and described particular radio frames is the some or all of radio frames of choosing in a time quantum, and wherein said time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number, and described particular radio frames is spacedly distributed in described time quantum;
Receive the positional information of described particular radio frames and the positional information of described specific sub-frame that described base station sends, the positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
2. the method for claim 1, is characterized in that,
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode.
3. the method for claim 1, is characterized in that, described in each, in particular radio frames, the distribution of described specific sub-frame is identical.
4. the method for claim 1, is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted by broadcast channel.
5. method as claimed in claim 4, it is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted and are comprised by broadcast channel: the positional information of described particular radio frames is by main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel, the positional information of described specific sub-frame is by described main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel.
6. the method as described in as arbitrary in claim 1-5, is characterized in that, receives the specific transactions that base station sends and comprises: user terminal receives the specific transactions that described base station sends;
The positional information of particular radio frames and the positional information of described specific sub-frame that receive the transmission of described base station comprise: described user terminal receives the positional information of particular radio frames and the positional information of described specific sub-frame that described base station sends.
7. a device that receives business, is characterized in that, comprising:
For receiving the unit of the specific transactions of base station transmission, described specific transactions sends in specific sub-frame, described specific sub-frame is the part or all of subframe of choosing from particular radio frames, described particular radio frames is the some or all of radio frames of choosing in a time quantum, and wherein said time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number, and described particular radio frames is spacedly distributed in described time quantum; And,
For receiving the positional information of particular radio frames of described base station transmission and the unit of the positional information of described specific sub-frame, the positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
8. the device of reception business as claimed in claim 7, is characterized in that, described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode.
9. device as claimed in claim 7, is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted by broadcast channel.
10. the device of reception business as claimed in claim 9, it is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted and are comprised by broadcast channel: the positional information of described particular radio frames is by main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel, the positional information of described specific sub-frame is by described main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel.
11. according to the device of the arbitrary described reception business of claim 7-10, it is characterized in that, the device that receives business is user terminal.
The method of 12. 1 kinds of transport services, is characterized in that, comprising:
In specific sub-frame, send specific transactions, described specific sub-frame is the part or all of subframe of choosing from particular radio frames, and described particular radio frames is the some or all of radio frames of choosing in a time quantum, and wherein said time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number, and described particular radio frames is spacedly distributed in described time quantum;
Send the positional information of described particular radio frames and the positional information of described specific sub-frame, the positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
13. methods as claimed in claim 12, is characterized in that,
Described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode.
14. methods as claimed in claim 12, is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted by broadcast channel.
15. methods as claimed in claim 14, it is characterized in that, the positional information of described particular radio frames and the positional information of described specific sub-frame are transmitted and are comprised by broadcast channel: the positional information of described particular radio frames is by main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel, the positional information of described specific sub-frame is by described main broadcast channel, any one transmission in inferior broadcast channel and Dynamic Broadcast Channel.
16. 1 kinds of base stations, is characterized in that, this base station comprises:
The device of transport service, for sending specific transactions in specific sub-frame, described specific sub-frame is the part or all of subframe of choosing from particular radio frames, and described particular radio frames is the some or all of radio frames of choosing in a time quantum, and wherein said time quantum is by 2
mindividual continuous radio frames forms, and wherein M is nonnegative integer, and described radio frames comprises R the subframe that can distribute to described specific transactions, and wherein R is natural number, and described particular radio frames is spacedly distributed in described time quantum; And send the positional information of described particular radio frames and the positional information of described specific sub-frame, the positional information of described particular radio frames is quantity or the interval of particular radio frames in described time quantum, the quantity of particular radio frames described in each time quantum or be spaced apart 2
m, and 0≤m≤M.
17. base stations as claimed in claim 16, is characterized in that, the device of described transport service comprises:
Time-division multiplexing unit, for choosing the part or all of radio frames in a time quantum, as particular radio frames; And, choose the part or all of subframe in described particular radio frames, as specific sub-frame, described specific sub-frame is used for sending specific transactions;
Transmission unit, for sending business according to the definite time division multiplexing mode of above-mentioned time-division multiplexing unit; And, send the positional information of described particular radio frames and the positional information of described specific sub-frame.
18. base stations as claimed in claim 17, is characterized in that, described specific transactions is multimedia broadcast-multicast service, or unicast service, or one or more business of transmitting in multimedia broadcasting and multicast mode.
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