CN101110666A - Data transmitting method for movable multimedia system - Google Patents
Data transmitting method for movable multimedia system Download PDFInfo
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- CN101110666A CN101110666A CNA2007101177668A CN200710117766A CN101110666A CN 101110666 A CN101110666 A CN 101110666A CN A2007101177668 A CNA2007101177668 A CN A2007101177668A CN 200710117766 A CN200710117766 A CN 200710117766A CN 101110666 A CN101110666 A CN 101110666A
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Abstract
The present invention discloses a data transmission method in a mobile multimedia system. In detail, each second of signal at a physical layer is one frame in the system and divided into N time slots. The method includes procedures below: (1) At a 0th time slot, it needs to firstly transmit a first beaconing and then 53 OFDM symbols; (2) From a first to N-1th time slot with N less than 40, it is proposed to firstly and respectively send a first beaconing and a second beaconing and then 53 OFDM symbols. The present invention is capable of realizing high-flexibility frequency programming and coverage area programming. A single frequency network with coverage scope of 16km and 50km can be built by selecting different frame structures and data transmission methods, thus effectively eliminating failure of standard GY/T 220.1-2006 to fulfill medium and large scope with a single frequency network.
Description
Technical field
The present invention relates to the mobile multimedia broadcast system field, be specifically related to a kind of data transmission method for uplink of mobile multi-medium system.
Background technology
The announced GY/T 220.1-2006 of China national General Bureau of Radio, Film and Television standard, be the first of CMMB (ChinaMobile M μ ltimedia Broadcasting, China Mobile multimedia broadcasting system) standard: broadcast channel frame structure, chnnel coding and modulation.
With reference to shown in Figure 1, be the frame structure schematic diagram in the GY/T220.1-2006 standard.The frame structure that is based on the time slot division that Fig. 1 represents.The physical layer signal per second is 1 frame, be divided into 40 time slots (TimeSlot, TS).The length of each time slot is 25ms, comprises 1 beacon (Beacon) and 53 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol.Each time slot has all adopted identical beacon length and OFDM symbol lengths.
With reference to shown in Figure 2, be the OFDM symbolic construction schematic diagram in the GY/T220.1-2006 standard.On time domain, each OFDM symbol is made of Cyclic Prefix (CP) and OFDM data volume.OFDM data volume length (is used T
UExpression) be 409.6 μ s, circulating prefix-length (is used T
CPExpression) be 51.2 μ s.
Data volume length is relevant with OFDM subcarrier spacing (Δ f) in the OFDM symbol.As long as the sampling number of OFDM is certain, data volume length (T in the OFDM symbol
U) just determine.Its computational methods are:
T
U＝1/Δf；
With reference to shown in Figure 3, be the beacon infrastructure schematic diagram in the GY/T220.1-2006 standard.Beacon infrastructure comprise identification signal of transmitter (Transmitter Identifier, TxID) and two identical synchronizing signals (Synchronous signal, SYNC).Identification signal of transmitter length is 36 μ s, and the length of two synchronizing signals is respectively 204.8 μ s, so the length of beacon is 445.6 μ s.
The data transmission method for uplink of existing mobile multi-medium system is:
At the 0th to the 139th time slot, send the beacon of one 445.6 μ s respectively earlier, sending 53 data body lengths again is 409.6 μ s, circulating prefix-length is the OFDM symbol of 51.2 μ s.
The modal network design of mobile multimedia broadcast system is single frequency network (SFN).The Single Frequency Network scheme has been set up the multipath propagation environment of oneself at receiving terminal, and the introducing of multi-transmitter has brought bigger time delay expansion.The cyclic prefix CP that the OFDM symbol adds suitable length is for the effectively antagonism ofdm system time delay expansion that the multipath transmission causes in the mobile multimedia Single Frequency Network; guarantee enough protections (GI) at interval; with the echo-signal of opposing, strengthen disposal ability to various echo-signals than long delay.Circulating prefix-length is generally greater than the propagation delay that transmits multipath signal.Transmission signals postpones to strengthen merging to the difference less than a Cyclic Prefix, and circulating prefix-length is big, and so treatable propagation delay is corresponding longer, and the programmable covering radius of network also strengthens.
In the GY/T 220.1-2006 standard, circulating prefix-length is 51.2 μ s, is 1/8 length of OFDM symbol, and accessible in theory coverage distance approximately is 15 kilometers.The design defect of this Cyclic Prefix is that length is shorter, can not resist the echo-signal than long delay, makes this pattern be only applicable to small-sized single frequency network.Can not satisfy the requirement that covers in the needs, greatly in some environment of SFN network.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of data transmission method for uplink of mobile multi-medium system, enlarges the individual transmitter covering radius, satisfies the requirement that covers in the SFN network, greatly.
In order to solve the problems of the technologies described above, the invention provides a kind of data transmission method for uplink of mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into N time slot, said method comprising the steps of:
(1) at the 0th time slot, send one first beacon earlier, send 53 OFDM symbols again;
(2) at the 1st to N-1 time slot, wherein N sends one second beacon respectively earlier less than 40, sends 53 OFDM symbols again.
Further, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix of length＞51.2 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Preferably, described N is 38, and described first beacon length is 452.7 μ s, and described second beacon length is 449.3 μ s, and described circulating prefix-length is 76 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.7 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 15.1 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
Preferably, described N is 35, and described first beacon length is 861.6 μ s, and described second beacon length is 860.6 μ s, and described circulating prefix-length is 110.8 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 39 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.4 μ s, the data volume that to send a length again be 25.6 μ s.
Preferably, described N is 34, and described first beacon length is 452.3 μ s, and described second beacon length is 450.1 μ s, and described circulating prefix-length is 134.4 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.1 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.5 μ s, the data volume that to send a length again be 25.6 μ s.
Preferably, described N is 32, and described first beacon length is 449.3 μ s, and described second beacon length is 449.3 μ s, and described circulating prefix-length is 169.1 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
Preferably, described N is 32, and described first beacon length is 851.6 μ s, and described second beacon length is 851.6 μ s, and described circulating prefix-length is 164 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s.
Preferably, described N is 37, and described first beacon length is 451.4 μ s, and described second beacon length is 450.4 μ s, and described circulating prefix-length is 89.4 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 39.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.8 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.8 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 38 time slots;
(2) at the 0th time slot, send first beacon that length is 452.7 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 37th time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 76 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.7 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 15.1 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 35 time slots;
(2) at the 0th time slot, send first beacon that length is 861.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 34th time slot, send second beacon that length is 860.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 110.8 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 39 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.4 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 34 time slots;
(2) at the 0th time slot, send first beacon that length is 452.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 33rd time slot, send second beacon that length is 450.1 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 134.4 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.1 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.5 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 32 time slots;
(2) at the 0th time slot, send first beacon that length is 449.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 169.1 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 32 time slots;
(2) at the 0th time slot, send first beacon that length is 851.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st time slot, send second beacon that length is 851.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 164 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s.
The present invention also provides a kind of data transmission method for uplink of mobile multi-medium system, and in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, said method comprising the steps of:
(1) every frame is divided into 37 time slots;
(2) at the 0th time slot, send first beacon that length is 451.4 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 36th time slot, send second beacon that length is 450.4 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 89.4 μ s earlier, the data volume that to send a length again be 409.6 μ s.
Further, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 39.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
Further, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.8 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.8 μ s, the data volume that to send a length again be 25.6 μ s.
Utilize the present invention can realize the frequency planning and the overlay area planning of high flexible.By selecting different frame tactic pattern and data transmission method for uplink can increase the coverage of single frequency network greatly, overcome effectively that existing GY/T 220.1-2006 standard can not realize in the single frequency network, the big defective that covers.
Description of drawings
Fig. 1 is the frame structure schematic diagram in the GY/T220.1-2006 standard.
Fig. 2 is the OFDM symbolic construction schematic diagram in the GY/T220.1-2006 standard.
Fig. 3 is the beacon infrastructure schematic diagram in the GY/T220.1-2006 standard.
Fig. 4 is the data transmission method for uplink flow chart of mobile multi-medium system of the present invention.
Fig. 5 is the frame structure schematic diagram of 38 time slots of first embodiment of the invention.
Fig. 6 is the frame structure schematic diagram of 35 time slots of second embodiment of the invention.
Fig. 7 is the frame structure schematic diagram of 34 time slots of third embodiment of the invention.
Fig. 8 is the frame structure schematic diagram of 32 time slots of fourth embodiment of the invention.
Fig. 9 is the frame structure schematic diagram of 32 time slots of fifth embodiment of the invention.
Figure 10 is the frame structure schematic diagram of 37 time slots of sixth embodiment of the invention.
Figure 11 protects the gap length schematic diagram for the present invention.
Embodiment
Main thought of the present invention is OFDM modulation system in not changing GY/T 220.1-2006 standard, do not change under the prerequisite of data subcarrier number, promptly under the situation that frequency domain information is not done to change substantially, in order to solve the needs that cover in the SFN single frequency network, greatly, provide a kind of new frame structure mode of operation and data transmission method for uplink.
Concerning mobile multimedia received, reception and efficiency of transmission were a pair of contradiction, need rationally accept or reject.Cyclic Prefix is selected more greatly, can resist the echo-signal than long delay, strengthens the disposal ability to various echo-signals, and (Single Frequency Network, SFN) the various multipaths between data symbol disturb under the environment to eliminate single frequency network.Thereby can enlarge the individual transmitter covering radius, save the construction cost of Single Frequency Network.
The present invention is directed in the GY/T 220.1-2006 standard circulating prefix-length (T in the frame structure scheme and data transmission method for uplink
CP) too short problem, a kind of new frame structure and data transmission method for uplink have been proposed, for the frequency planning of network agile and overlay area planning lay the first stone.
Among the present invention, the assurance frequency domain information is not changed, and subcarrier spacing (Δ f) remains unchanged, and OFDM data volume length (is used T
UExpression) also can remain unchanged, still be 409.6 μ s.According to this principle, (use T in order to expand circulating prefix-length
CPExpression), time-domain information is changed, designed novel frame structure, promptly structure of time slot is optimized and adjusts, designed new data transmission method for uplink simultaneously.
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.
With reference to shown in Figure 4, be the data transmission method for uplink flow chart of mobile multi-medium system of the present invention.This method may further comprise the steps:
Step 401: at the 0th time slot, send one first beacon earlier, send 53 OFDM symbols again;
Step 402: at the 1st to N-1 time slot, wherein N sends one second beacon respectively earlier less than 40, sends 53 OFDM symbols again.
The sending method of described OFDM symbol is: send earlier the Cyclic Prefix of length＞51.2 μ s, the data volume that to send a length again be 409.6 μ s.
Preferred embodiment one:
With reference to shown in Figure 5, be the frame structure schematic diagram of 38 time slots of first embodiment of the invention.In this programme, in order to design long CP length, give up two time slots, adjusting 40 original structure of time slot is 38 time slots.The symbol lengths of first time slot (TS) 0 is 26319.1 μ s among the figure, and the symbol lengths of time slot 1-time slot 37 every time slots is 26315.7 μ s.Wherein first beacon (Beacon) length of time slot 0 is 452.7 μ s, and second beacon length of time slot 1-time slot 37 every time slots is 449.3 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, Cyclic Prefix (CP) extended length is to 76 μ s.
The data transmission method for uplink of first embodiment of the invention may further comprise the steps:
(1) every frame is divided into 38 time slots;
(2) at the 0th time slot, send first beacon that length is 452.7 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 37th time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 76 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.7 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 15.1 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
In the present embodiment, the protection gap length is 2.4 μ s, and as shown in FIG., other embodiment herewith.
Preferred embodiment two:
With reference to shown in Figure 6, be the frame structure schematic diagram of 35 time slots of second embodiment of the invention.In this programme, in order to design long CP length, give up 5 time slots, adjusting 40 original structure of time slot is 35 time slots, has adjusted synchronizing signal length simultaneously, changes 409.6 μ s into by 204.8 original μ s.The slot length of time slot 0 is 28572.4 μ s among the figure, and time slot 1-time slot 34 every slot lengths are 28571.4 μ s.Wherein first beacon (Beacon) length of time slot 0 is 861.6 μ s, and second beacon length of time slot 1-time slot 35 every time slots is 860.6 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, circulating prefix-length expands to 110.8 μ s.
The data transmission method for uplink of second embodiment of the invention may further comprise the steps:
(1) every frame is divided into 35 time slots;
(2) at the 0th time slot, send first beacon that length is 861.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 34th time slot, send second beacon that length is 860.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 110.8 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 39 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.4 μ s, the data volume that to send a length again be 25.6 μ s.
Preferred embodiment three:
With reference to shown in Figure 7, be the frame structure schematic diagram of 34 time slots of third embodiment of the invention.In this programme, in order to design long CP length, give up 6 time slots, adjusting 40 original structure of time slot is 34 time slots.The symbol lengths of time slot 0 is 29413.9 μ s among the figure, and the symbol lengths of time slot 1-time slot 33 every time slots is 29411.7 μ s.Wherein first beacon length of time slot 0 is 452.3 μ s, and second beacon length of time slot 1-time slot 33 every time slots is 450.1 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, Cyclic Prefix (CP) length can expand to 134.4 μ s.
The data transmission method for uplink of third embodiment of the invention may further comprise the steps:
(1) every frame is divided into 34 time slots;
(2) at the 0th time slot, send first beacon that length is 452.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 33rd time slot, send second beacon that length is 450.1 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 134.4 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.1 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.5 μ s, the data volume that to send a length again be 25.6 μ s.
Preferred embodiment four:
With reference to shown in Figure 8, be the frame structure schematic diagram of 32 time slots of fourth embodiment of the invention.In this programme, in order to design long CP length, give up 8 time slots, adjusting 40 original structure of time slot is 32 time slots.The symbol lengths of time slot 0 is 31250 μ s among the figure, and the symbol lengths of time slot 1-time slot 31 every time slots is 31250 μ s.Second beacon length of first beacon of time slot 0 and time slot 1-time slot 31 every time slots is 449.3 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, Cyclic Prefix (CP) length can expand to 169.1 μ s.
The data transmission method for uplink of fourth embodiment of the invention may further comprise the steps:
(1) every frame is divided into 32 time slots;
(2) at the 0th time slot, send first beacon that length is 449.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 169.1 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
Preferred embodiment five:
With reference to shown in Figure 9, be the frame structure schematic diagram of 32 time slots of fifth embodiment of the invention.In this programme, in order to design long CP length, give up 8 time slots, adjusting 40 original structure of time slot is 32 time slots.With the difference of preferred embodiment four directions case be: this programme has changed synchronizing signal length simultaneously, changes 409.6 μ s into by 204.8 original μ s.The symbol lengths of time slot 0-time slot 31 every time slots is 31250 μ s among the figure.Second beacon length of first beacon of time slot 0 and time slot 1-time slot 31 every time slots all is 851.6 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, Cyclic Prefix (CP) length can expand to 164 μ s.
The data transmission method for uplink of fifth embodiment of the invention may further comprise the steps:
(1) every frame is divided into 32 time slots;
(2) at the 0th time slot, send first beacon that length is 851.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st time slot, send second beacon that length is 851.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 164 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s.
Preferred embodiment six:
With reference to shown in Figure 10, be the frame structure schematic diagram of 37 time slots of sixth embodiment of the invention.In this programme, in order to design long CP length, give up 3 time slots, adjusting 40 original structure of time slot is 37 time slots.The symbol lengths of time slot 0 is 27028 μ s among the figure, and the symbol lengths of time slot 1-time slot 36 every time slots is 27027 μ s.Wherein first beacon length of time slot 0 is 451.4 μ s, and second beacon length of time slot 1-time slot 36 every time slots is 450.4 μ s.OFDM data volume length remains unchanged, and still is 409.6 μ s.Like this, Cyclic Prefix (CP) length can expand to 89.4 μ s.
The data transmission method for uplink of sixth embodiment of the invention may further comprise the steps:
(1) every frame is divided into 37 time slots;
(2) at the 0th time slot, send first beacon that length is 451.4 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 36th time slot, send second beacon that length is 450.4 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the sending method of described OFDM symbol is: send earlier the Cyclic Prefix that length is 89.4 μ s, the data volume that to send a length again be 409.6 μ s.
The step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 39.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
The step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.8 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.8 μ s, the data volume that to send a length again be 25.6 μ s.
With reference to shown in Figure 12, for the present invention protects the gap length schematic diagram.Between identification signal of transmitter, synchronizing signal and the adjacent OFDM symbol, overlap protection length T at interval mutually by protection interval (GI)
GIBe 2.4 μ s.Each time slot has 55 GI.
T among the figure
0Expression data volume length, T
1The expression circulating prefix-length.
T among each embodiment
0And T
1Value sees the following form:
| Signal | Embodiment one | Embodiment two | Embodiment three | |||
| ?T 0(μs) | ?T 1(μs) | ?T 0(μs) | ?T 1(μs) | ?T 0(μs) | ?T 1(μs) | |
| The first beacon id signal | ?25.6 | ?15.1 | ?25.6 | ?14.4 | ?25.6 | ?14.7 |
| Second beacon | ?25.6 | ?11.7 | ?25.6 | ?13.4 | ?25.6 | ?12.5 |
| Id signal | ||||||
| Synchronizing signal | ?204.8 | ?0 | ?409.6 | ?0 | ?204.8 | ?0 |
| The OFDM symbol | ?409.6 | ?76 | ?409.6 | ?110.8 | ?409.6 | ?134.4 |
| Signal | Embodiment four | Embodiment five | Embodiment six | |||
| ?T 0(μs) | ?T 1(μs) | ?T 0(μs) | ?T 1(μs) | ?T 0(μs) | ?T 1(μs) | |
| The first beacon id signal | ?25.6 | ?11.7 | ?25.6 | ?4.4 | ?25.6 | ?13.8 |
| The second beacon id signal | ?25.6 | ?11.7 | ?25.6 | ?4.4 | ?25.6 | ?12.8 |
| Synchronizing signal | ?204.8 | ?0 | ?409.6 | ?0 | ?204.8 | ?0 |
| The OFDM symbol | ?409.6 | ?169.1 | ?409.6 | ?164 | ?409.6 | ?89.4 |
The frame mechanism and the data transmission method for uplink of existing frame structure and the data transmission method for uplink and the specific embodiment of the invention are compared, their difference is summarized, as shown in the table:
| Frame structure | Prior art | Embodiment one | Embodiment 27 | Embodiment three | Embodiment four | Embodiment five | Embodiment six |
| The per second timeslot number | ?40 | ?38 | ?35 | ?34 | ?32 | ?32 | ?37 |
| CP length | ?51.2μs | ?76μs | ?110.8μs | ?134.4μs | ?169.1μs | ?164μs | ?89.4μs |
| The OFDM symbol lengths | ?409.6μs | ?409.6μs | ?409.6μs | ?409.6μs | ?409.6μs | ?409.6μs | ?409.6μs |
| Synchronizing signal length | ?204.8μs | ?204.8μs | ?409.6μs | ?204.8μs | ?204.8μs | ?409.6μs | ?204.8μs |
The present invention proposes a kind of new frame structure and data transmission method for uplink, by increasing the length of Cyclic Prefix, the too short problem of circulating prefix-length in frame structure scheme and the data transmission method for uplink in the elimination GY/T 220.1-2006 standard, thereby can enlarge single transmitter covering radius, save the construction cost of Single Frequency Network, for the frequency planning and the overlay area planning of network agile lays the first stone.
Certainly, above-mentioned specific embodiment is not the further qualification to technical solution of the present invention, and any those of ordinary skill in the art replaced or corresponding improvement the technology of the present invention feature being equal to of being done, still within protection scope of the present invention.
Claims (38)
1. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into N time slot, it is characterized in that, said method comprising the steps of:
(1) at the 0th time slot, send one first beacon earlier, send 53 OFDM symbols again;
(2) at the 1st to N-1 time slot, wherein N sends one second beacon respectively earlier less than 40, sends 53 OFDM symbols again.
2. the data transmission method for uplink of mobile multi-medium system as claimed in claim 1 is characterized in that, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix of length＞51.2 μ s earlier, the data volume that to send a length again be 409.6 μ s.
3. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 38, and described first beacon length is 452.7 μ s, and described second beacon length is 449.3 μ s, and described circulating prefix-length is 76 μ s.
4. the data transmission method for uplink of mobile multi-medium system as claimed in claim 3, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.7 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
5. the data transmission method for uplink of mobile multi-medium system as claimed in claim 4, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 15.1 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
6. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 35, and described first beacon length is 861.6 μ s, and described second beacon length is 860.6 μ s, and described circulating prefix-length is 110.8 μ s.
7. the data transmission method for uplink of mobile multi-medium system as claimed in claim 6, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 39 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
8. the data transmission method for uplink of mobile multi-medium system as claimed in claim 7, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.4 μ s, the data volume that to send a length again be 25.6 μ s.
9. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 34, and described first beacon length is 452.3 μ s, and described second beacon length is 450.1 μ s, and described circulating prefix-length is 134.4 μ s.
10. the data transmission method for uplink of mobile multi-medium system as claimed in claim 9, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.1 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
11. the data transmission method for uplink of mobile multi-medium system as claimed in claim 10, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.5 μ s, the data volume that to send a length again be 25.6 μ s.
12. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 32, and described first beacon length is 449.3 μ s, and described second beacon length is 449.3 μ s, and described circulating prefix-length is 169.1 μ s.
13. the data transmission method for uplink of mobile multi-medium system as claimed in claim 12, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
14. the data transmission method for uplink of mobile multi-medium system as claimed in claim 13, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
15. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 32, and described first beacon length is 851.6 μ s, and described second beacon length is 851.6 μ s, and described circulating prefix-length is 164 μ s.
16. the data transmission method for uplink of mobile multi-medium system as claimed in claim 15, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
17. the data transmission method for uplink of mobile multi-medium system as claimed in claim 16, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s.
18. the data transmission method for uplink of mobile multi-medium system as claimed in claim 2 is characterized in that, described N is 37, and described first beacon length is 451.4 μ s, and described second beacon length is 450.4 μ s, and described circulating prefix-length is 89.4 μ s.
19. the data transmission method for uplink of mobile multi-medium system as claimed in claim 18, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 39.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
20. the data transmission method for uplink of mobile multi-medium system as claimed in claim 19, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.8 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.8 μ s, the data volume that to send a length again be 25.6 μ s.
21. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 38 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 452.7 μ s earlier, send 53 OFDM symbols again;
(3) follow-up at the 1st to the 37th time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 76 μ s earlier, the data volume that to send a length again be 409.6 μ s.
22. the data transmission method for uplink of mobile multi-medium system as claimed in claim 21, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.7 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
23. the data transmission method for uplink of mobile multi-medium system as claimed in claim 22, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 15.1 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
24. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 35 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 861.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 34th follow-up time slot, send second beacon that length is 860.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 110.8 μ s earlier, the data volume that to send a length again be 409.6 μ s.
25. the data transmission method for uplink of mobile multi-medium system as claimed in claim 24, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 39 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
26. the data transmission method for uplink of mobile multi-medium system as claimed in claim 25, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.4 μ s, the data volume that to send a length again be 25.6 μ s.
27. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 34 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 452.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 33rd follow-up time slot, send second beacon that length is 450.1 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 134.4 μ s earlier, the data volume that to send a length again be 409.6 μ s.
28. the data transmission method for uplink of mobile multi-medium system as claimed in claim 27, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 40.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.1 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
29. the data transmission method for uplink of mobile multi-medium system as claimed in claim 28, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 14.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.5 μ s, the data volume that to send a length again be 25.6 μ s.
30. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 32 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 449.3 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st follow-up time slot, send second beacon that length is 449.3 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 169.1 μ s earlier, the data volume that to send a length again be 409.6 μ s.
31. the data transmission method for uplink of mobile multi-medium system as claimed in claim 30, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 37.3 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
32. data transmission method for uplink as claim 31 described mobile multi-medium system, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 11.7 μ s, the data volume that to send a length again be 25.6 μ s.
33. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 32 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 851.6 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 31st follow-up time slot, send second beacon that length is 851.6 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 164 μ s earlier, the data volume that to send a length again be 409.6 μ s.
34. the data transmission method for uplink of mobile multi-medium system as claimed in claim 33, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 30 μ s, the synchronizing signal that to send two length continuously again be 409.6 μ s.
35. the data transmission method for uplink of mobile multi-medium system as claimed in claim 34, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 4.4 μ s, the data volume that to send a length again be 25.6 μ s.
36. the data transmission method for uplink of a mobile multi-medium system, in the described system, the every frame of physical layer signal is 1 second, is divided into a plurality of time slots, it is characterized in that, said method comprising the steps of:
(1) every frame is divided into 37 time slots;
(2) when the every frame data of emission, at the 0th time slot, send first beacon that length is 451.4 μ s earlier, send 53 OFDM symbols again;
(3) at the 1st to the 36th follow-up time slot, send second beacon that length is 450.4 μ s respectively earlier, send 53 OFDM symbols again;
Wherein, the step of described transmission OFDM symbol comprises: send the Cyclic Prefix that length is 89.4 μ s earlier, the data volume that to send a length again be 409.6 μ s.
37. the data transmission method for uplink of mobile multi-medium system as claimed in claim 36, it is characterized in that, the step of described transmission first beacon comprises: send earlier the identification signal of transmitter that length is 39.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s; The step of described transmission second beacon comprises: send earlier the identification signal of transmitter that length is 38.4 μ s, the synchronizing signal that to send two length continuously again be 204.8 μ s.
38. the data transmission method for uplink of mobile multi-medium system as claimed in claim 37, it is characterized in that, the step of the described transmission first beacon id signal comprises: send earlier the Cyclic Prefix that length is 13.8 μ s, the data volume that to send a length again be 25.6 μ s; The step of the described transmission second beacon id signal comprises: send earlier the Cyclic Prefix that length is 12.8 μ s, the data volume that to send a length again be 25.6 μ s.
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| CNA2007101177668A CN101110666A (en) | 2007-06-22 | 2007-06-22 | Data transmitting method for movable multimedia system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013189007A1 (en) * | 2012-06-19 | 2013-12-27 | 北京泰美世纪科技有限公司 | Frequency hopping-based digital multimedia broadcast transmitting method and receiving method and systems thereof |
| CN106411445A (en) * | 2015-07-31 | 2017-02-15 | 中兴通讯股份有限公司 | Transmission method and synchronization method for synchronization signals in communication system |
-
2007
- 2007-06-22 CN CNA2007101177668A patent/CN101110666A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013189007A1 (en) * | 2012-06-19 | 2013-12-27 | 北京泰美世纪科技有限公司 | Frequency hopping-based digital multimedia broadcast transmitting method and receiving method and systems thereof |
| CN106411445A (en) * | 2015-07-31 | 2017-02-15 | 中兴通讯股份有限公司 | Transmission method and synchronization method for synchronization signals in communication system |
| CN106411445B (en) * | 2015-07-31 | 2019-08-27 | 南京中兴软件有限责任公司 | Sending method, synchronous method and the device of synchronization signal in a kind of communication system |
| US10499354B2 (en) | 2015-07-31 | 2019-12-03 | Zte Corporation | Synchronization signal transmission method in communication system, and synchronization method and device |
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