CN102263746B - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN102263746B CN102263746B CN201110249220.4A CN201110249220A CN102263746B CN 102263746 B CN102263746 B CN 102263746B CN 201110249220 A CN201110249220 A CN 201110249220A CN 102263746 B CN102263746 B CN 102263746B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of data transmission method and device, the method includes：The first modulation coding mode for being adopted of system information channel in configuration radio frames is identical with the coding and decoding characteristic of the second modulation coding mode that control channel is adopted, and wherein, radio frames are using OFDM and to configure the frame in the mobile communication system of tdd frame structure；Carry out data transmission in radio frames.By the present invention, the accuracy rate of data transfer is improve.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method and device.
Background technology
With the development and the popularization of smart mobile phone of mobile Internet, mobile data traffic demand is skyrocketed through, quick increasing
Long data service proposes severe challenge to the transmittability of mobile communications network.Predicted according to authoritative institution, following 10 years
Interior (2011-2020), mobile data services amount are also doubled every year, will increase by 1,000 times within 10 years.
Most mobile data services occur mainly in indoor and focus environment, are presented as that nomadic/local wireless is accessed
Scene.According to statistics, nearly the 70% of current mobile data services amount occurs indoors, and this ratio will also continue to increase, in advance
Counting 2012 will be more than 80%.Data service is mainly Internet service, and the requirement to service quality is relatively simple, and far
It is less than requirement of the conventional telecommunications business to service quality.What cell mobile communication systems was mainly directed towards is high-speed mobile, without seaming and cutting
The conventional telecommunications service design for changing, when which carries big flow low speed the Internet agreement (Internet Protocol, referred to as IP)
During data packet traffic, efficiency is low, high cost.
The existing at present solution for being suitable for nomadic/local wireless data access mainly has IEEE
(Institute of Electrical and Electronics Engineers, referred to as IEEE) 802.11 series standards,
Or using OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) and
And the standard of the mobile communication system of the frame structure of configuring time division duplex (Time Division Duplex, referred to as TDD), example
Such as：Leading NUHT (the Next Ultra-High Throughout) standard of domestic new coastline company.The NUHT standards are adopted
It is OFDM technology and the frame structure for configuring TDD, its system basic parameter as shown in table 1, wrap on frequency domain by an OFDM symbol
Include 256 subcarriers, wherein data subcarrier 224, Phase Tracking pilot sub-carrier 6, virtual subcarrier (protection son load
Ripple) 26.
1 OFDM basic parameters of table
The basic frame structure of said system can adopt frame structure as shown in Figure 1, the frame structure mainly by targeting sequencing,
System information channel (System Information Channel, referred to as SICH), control channel (Control Channel,
Referred to as CCH), transmission channel etc. constitutes.Wherein, SICH (at least includes CCH channels comprising the most basic configuration information of system
Positional information), be terminal first have to after down-going synchronous are completed decode channel.CCH channels are by multiple unicasts and broadcast scheduling
Signaling is constituted, and is after terminal is successfully accessed system to have to the channel for decoding for completing uplink and downlink data transfer.?
Modulation coding modes of the regulation SICH using BPSK CC1/2 in NUHT standards, and CCH is using the modulating-coding of QPSK CC1/2
Mode.The distribution of this modulation coding mode will result in a problem, as shown in Fig. 2 R1 is that terminal can be solved in eNB cells
The maximal cover radius of code SICH channels, R2 are the maximal cover radius that terminal can decode CCH channels in eNB cells.Due to
The performance of the modulation coding mode of BPSK CC1/2 is better than QPSK CC1/2, so R1 is bigger than R2, i.e., SICH can be covered
Radius bigger than the radius that CCH is covered.For MS1, MS1 can be successfully decoded SICH, but successfully can not solve
Code CCH, so MS1 cannot carry out uplink and downlink data transfer with eNB.
To sum up, cannot be into as the radius of the covering of system channel information and control channel has differences in correlation technique
Work(is decoded, and causes the accuracy rate for carrying out data transmission poor.
Content of the invention
Present invention is primarily targeted at a kind of data transmission method and device are provided, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of data transmission method, including：System letter in configuration radio frames
The coding and decoding characteristic of the second modulation coding mode that the first modulation coding mode and control channel adopted by breath channel is adopted
Identical, wherein, the radio frames are using OFDM and to configure the frame in the mobile communication system of tdd frame structure；Described wireless
Carry out data transmission on frame.
Preferably, the first modulating-coding that the system information channel one of in the following manner in configuration radio frames is adopted
Mode is identical with the coding and decoding characteristic of the second modulation coding mode that control channel is adopted：Configuration is described to adopt the first modulation to compile
The system information channel of code mode is identical with the transmission range of the control channel for adopting the second modulation coding mode；Configuration institute
It is identical modulation coding mode to state the first modulation coding mode and second modulation coding mode；Configure first modulation
Coded system is identical with the Modulation order Product code Rate of second modulation coding mode；Configure first modulation coding mode and institute
The spectrum efficiency for stating the second modulation coding mode is identical.
Preferably, the second modulation coding mode that the control channel is adopted includes：The institute that the control channel includes
The modulation coding mode having corresponding to control signaling；The modulating-coding that all control signalings that the control channel includes are used
The modulation coding mode corresponding to minima in efficiency；The frequency spectrum that all control signalings that the control channel includes are used
The modulation coding mode corresponding to minima in efficiency.
Preferably, in all control signalings modulation coding mode used by each control signaling is by positioned at the control
Control channel head in channel is indicating.
Preferably, the modulation coding mode and/or positional information of the control channel head by system configuration or is carried in institute
State in system information channel and indicated.
Preferably, the modulation coding mode of the control channel head is identical with first modulation coding mode.
Preferably, said method also includes：First modulation coding mode described in system configuration and/or second modulation are compiled
Code mode；Second modulation coding mode is carried in the system information channel；First modulation coding mode and/or
Second modulation coding mode is carried in targeting sequencing, wherein, and the targeting sequencing is entering for terminal for base station transmission
The sequence of row down-going synchronous.
Preferably, first modulation coding mode and/or second modulation coding mode are carried in the leading sequence
In row, first modulation coding mode and second modulation coding mode is indicated in the following manner：
Determine first index of the short leader sequence S-Preamble in the targeting sequencing；Using described first index and
The corresponding relation of default first index indicates first modulation coding mode and/or second modulation coding mode,
Wherein, the corresponding relation of first index is first index and first modulation coding mode and/or first rope
Draw the corresponding relation with second modulation coding mode；Or
Determine second index of the long preamble L-Preamble in the targeting sequencing；Using described second index and
The corresponding relation of default second index indicates first modulation coding mode and/or second modulation coding mode,
Wherein, the corresponding relation of second index is second index and first modulation coding mode and/or second index
Corresponding relation with second modulation coding mode.
According to a further aspect in the invention, there is provided a kind of data transmission device, including：Configuration module, for configuring nothing
The second modulating-coding side that the first modulation coding mode and control channel adopted by system information channel in line frame is adopted
The coding and decoding characteristic of formula is identical, and wherein, the radio frames are using OFDM and to configure in the mobile communication system of tdd frame structure
Frame；Transport module, for carrying out data transmission in the radio frames.
Preferably, the system information channel institute that the configuration module is used in one of in the following manner configuration radio frames is right
The first modulation coding mode that answers is identical with the coding and decoding characteristic of the second modulation coding mode corresponding to control channel：Configuration institute
State the transmission range phase of the system information channel of the first modulation coding mode and the control channel of second modulation coding mode
With；Configure first modulation coding mode and second modulation coding mode uses identical modulation coding mode；Configuration
First modulation coding mode is identical with the Modulation order Product code Rate of second modulation coding mode；Configure first modulation
Coded system is identical with the spectrum efficiency of second modulation coding mode.
By the present invention, using OFDM and the system in the radio frames in the mobile communication system of tdd frame structure will be configured
The corresponding modulation coding mode of information channel is identical with the coding and decoding feature of the corresponding modulation coding mode of control channel so that be
The radius that system information channel is covered is identical with the radius that control channel is covered, and solves in correlation technique due to system channel information
Have differences with the radius of the covering of control channel and cannot be successfully decoded, cause that the accuracy rate for carrying out data transmission is poor to ask
Topic, so that improve the accuracy rate of data transfer in wireless communication system.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the basic frame structure schematic diagram of the NUHT systems according to correlation technique；
Fig. 2 is the coverage schematic diagram of the SICH and CCH of the NUHT systems according to correlation technique；
Fig. 3 is the flow chart of data transmission method according to embodiments of the present invention；And
Fig. 4 is the structured flowchart of data transmission device according to embodiments of the present invention.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
A kind of data transmission method is present embodiments provided, Fig. 3 is data transmission method according to embodiments of the present invention
Flow chart, as shown in figure 3, the method includes the steps：
Step S302：The first modulation coding mode and control channel that system information channel in configuration radio frames is adopted
The coding and decoding characteristic of the second modulation coding mode for being adopted is identical, wherein, radio frames be using orthogonal frequency division multiplex OFDM simultaneously
Frame in the mobile communication system of configuring time division duplex tdd frame structure.
Step S304：Carry out data transmission in radio frames.
By above-mentioned steps, using OFDM and will configure and in the radio frames in the mobile communication system of tdd frame structure be
The corresponding modulation coding mode of system information channel is identical with the coding and decoding feature of the modulation coding mode that control channel is adopted so that
The radius that system information channel is covered is identical with the radius that control channel is covered, and overcomes in correlation technique, due to system channel
The radius of the covering of information and control channel has differences and cannot be successfully decoded, and causes the accuracy rate for carrying out data transmission to compare
Difference problem, so that improve the accuracy rate of data transfer in wireless communication system.
As a preferably embodiment, the system that step S302 can one of in the following manner in configuration radio frames
The coding and decoding of the second modulation coding mode corresponding to the first modulation coding mode and control channel corresponding to information channel is special
Property is identical：
Mode one：Configuration is using the system information channel of the first modulation coding mode and using the second modulation coding mode
The transmission range of control channel is identical.Such as A is BPSK1/2, and B is QPSK1/4, in this example, it is assumed that system information letter
The maximum transmission distance in road (SICH) is 500 meters, and the maximum transmission distance of control channel (CCH) is also 500 meters.
Mode two：It is identical modulation coding mode to configure the first modulation coding mode and the second modulation coding mode.Example
Such as：First modulation coding mode and the second modulation coding mode are all configured to BPSK CC 1/2.
Mode three：The Modulation order Product code Rate for configuring the first modulation coding mode and the second modulation coding mode is identical.For example：
First modulation coding mode is BPSK CC 1/2, and B is QPSK CC 1/4, then A is identical with the Modulation order Product code Rate of B.
Mode four：The spectrum efficiency for configuring the first modulation coding mode and the second modulation coding mode is identical.Than preferably,
Spectrum efficiency is referred in per unit band width (1 hertz), the data bit number that can be transmitted in the unit interval (1 second).
Used as another preferably embodiment, the second modulation coding mode that control channel is adopted is following three kinds of sides
The corresponding modulation coding mode of formula：
Mode one：The modulation coding mode corresponding to all control signalings that control channel includes.
Mode two：Corresponding to minima in the Modulation order Product code Rate that all control signalings that control channel includes are used
Modulation coding mode.For example：The control channel includes that 3 control signalings are respectively CS1, CS2 and CS3, these three control letters
Corresponding Modulation order Product code Rate is made to be respectively 0.5 (bit/subcarrier), 0.8 (bit/subcarrier), 1 (bit/subcarrier), then
Second modulation coding mode is modulation coding mode of the Modulation order Product code Rate corresponding to 0.5 (bit/subcarrier).
Mode three：The tune corresponding to minima in the spectrum efficiency that all control signalings that control channel includes are used
Coded system processed.For example：The control channel includes that 3 control signalings are respectively CS1, CS2 and CS3, these three control signalings pair
The spectrum efficiency that answers is respectively 0.2 (bps/hertz), 0.4 (bps/hertz), 0.6 (bps/hertz), then and the
Two modulation coding modes are modulation coding mode of the spectrum efficiency corresponding to 0.2 (bps/hertz).
All control signalings in control channel in aforesaid way one all adopt identical modulation coding mode, i.e. right
In identical modulation coding mode is all adopted apart from the distal and proximal terminal in base station, the configuration of modulation coding mode is relatively simple；Right
In mode two and three, in the two ways, all control signalings in control channel can adopt neatly different modulation to compile
Code mode (more modulation coded system), configures worst modulating-coding in the first modulation coding mode and control signaling in mode two
The coding and decoding characteristic of the corresponding modulation coding mode of efficiency is identical, configures the first modulation coding mode and control in mode three
The coding and decoding characteristic of the modulation coding mode in signaling corresponding to minimum spectrum efficiency is identical, and both modes are in flexible configuration control
The decode-regulating mode of channel processed, and meet the coverage identical requirement of control channel and system information channel, realize number
According to transmission.
Preferably, in three kinds of modes in above preferred embodiment, each control signaling is used in all control signalings
Modulation coding mode is indicated by the control channel head being located in the control channel.Preferably, the modulating-coding of control channel head
Mode and/or positional information are indicated in system information channel by system configuration or carrying.Preferably, control channel head
Modulation coding mode is identical with the first modulation coding mode.In the preferred implementation, indicate that using existing signaling modulation is compiled
Code mode, reduces signaling consumption.
As another preferred embodiment, the first modulation coding mode and/or the are processed one of in the following manner
Two modulation coding modes：
Mode one：The first modulation coding mode of system configuration and/or the second modulation coding mode.
Mode two：Second modulation coding mode is carried in system information channel.
Mode three：First modulation coding mode and/or the second modulation coding mode are carried in targeting sequencing, wherein, front
Lead the sequence that down-going synchronous are carried out for terminal that sequence sends for base station.
Mode one achieves the same configuration of system, and the modulation coding mode of control channel is carried by mode two to be believed in system
In breath channel, signaling consumption is reduced；Mode three, is compiled by the modulation of targeting sequencing carrying system information channel and control channel
Code mode, it is achieved that indicate the motility of modulation coding mode and reduce signaling consumption.
Aforesaid way three in targeting sequencing directly can carry modulation coding mode and directly be indicated, it is also possible to pass through
Mapping relations indicate modulation coding mode indirectly, according to short leader sequence and long preambles in the corresponding targeting sequencing of mapping relations
The difference of sequence, can adopt the following two kinds preferred implementation：
Preferred implementation one：Determine first index of the short leader sequence S-Preamble in targeting sequencing；Using
The corresponding relation of one index and default first index indicates the first modulation coding mode and/or the second modulation coding mode,
Wherein, the corresponding relation of the first index is first index and the first modulation coding mode and/or the first index and the second modulation
The corresponding relation of coded system.
Preferred implementation two：Determine second index of the long preamble L-Preamble in targeting sequencing；Using
The corresponding relation of two indexes and default second index indicates the first modulation coding mode and/or the second modulation coding mode,
Wherein, the corresponding relation of the second index is adjusted with second with the first modulation coding mode and/or second index for second index
The corresponding relation of coded system processed.
It should be noted that can be in such as one group of computer executable instructions the step of the flow process of accompanying drawing is illustrated
Execute in computer system, and, although show logical order in flow charts, but in some cases, can be with not
The order being same as herein executes shown or described step.
In another embodiment, a kind of data transmission software is additionally provided, and the software is used for executing above-described embodiment
And the technical scheme described in preferred embodiment.
In another embodiment, a kind of storage medium is additionally provided, and the above-mentioned data that are stored with the storage medium are passed
Defeated software, the storage medium are included but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
The embodiment of the present invention additionally provides a kind of data transmission device, and the data transmission device can be used for realizing above-mentioned number
According to transmission method and preferred implementation, explanation was carried out, had been repeated no more, below to being related in the data transmission device
To module illustrate.As used below, term " module " can realize the group of the software and/or hardware of predetermined function
Close.Although the system and method described by following examples are preferably realized with software, hardware, or software and hardware
The realization of combination be also may and to be contemplated.
Fig. 4 is the structured flowchart of data transmission device according to embodiments of the present invention, and as shown in Figure IV, the device includes：
Configuration module 42 and transport module 44, are described in detail to said structure below：
Configuration module 42, the first modulation coding mode and control that the system information channel for configuring in radio frames is adopted
The coding and decoding characteristic of the second modulation coding mode that channel processed is adopted is identical, and wherein, radio frames are using OFDM and to configure TDD
Frame in the mobile communication system of frame structure；Transport module 44, is connected to configuration module 42, for configured in configuration module 42
Carry out data transmission in radio frames.
Preferably, the system information channel that configuration module 42 is used in one of in the following manner configuration radio frames is adopted
The first modulation coding mode identical with the coding and decoding characteristic of the second modulation coding mode that control channel is adopted：Configuration first
The system information channel of modulation coding mode is identical with the transmission range of the control channel of the second modulation coding mode；Configuration first
Modulation coding mode and the second modulation coding mode use identical modulation coding mode；Configure the first modulation coding mode and
The Modulation order Product code Rate of two modulation coding modes is identical；Configure the frequency spectrum of the first modulation coding mode and the second modulation coding mode
Efficiency is identical.
A kind of frame structure is present embodiments provided, the first modulating-coding side corresponding to the system information channel in radio frames
Formula is identical with the coding and decoding characteristic of the second modulation coding mode corresponding to control channel, and wherein, above-mentioned radio frames are use
OFDM the frame in configuring the mobile communication system of tdd frame structure.
Illustrate below in conjunction with preferred embodiment, preferred embodiment below combines above-described embodiment and is preferable to carry out
Mode.
Preferred embodiment one
The present invention proposes a kind of speed matching method of control channel, the frame in the present embodiment be using OFDM technology and
Frame, the mobile communication system basic parameter in the mobile communication system of configuration tdd frame structure can adopt the ginseng shown in table 1
Number.
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, adopt by control channel (CCH)
Modulation coding mode is B, and wherein, A and B has identical coding and decoding characteristic.
Used as a preferably embodiment, identical coding and decoding characteristic includes following four mode：
Mode one：Maximum transmission distance and the CCH using modulation coding mode B using the SICH of modulation coding mode A
Maximum transmission distance identical.Such as A is BPSK1/2, and B is QPSK1/4, in this example, it is assumed that system information channel
(SICH) maximum transmission distance is 500 meters, and the maximum transmission distance of control channel (CCH) is also 500 meters.
Mode two：A and B can be same modulation coding mode.
Mode three：A and B has identical Modulation order Product code Rate, and wherein, Modulation order Product code Rate refers to each modulated sub-carriers
Useful data bit (bit) number of upper transmission.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferably, A and B can be processed in the following manner：
Mode one：A and/or B can be configured by standard default；
Mode two：The information of B is carried in system information channel (SICH)；
Mode three：The information of A and/or B can be carried in targeting sequencing；
It should be noted that the targeting sequencing of mode three is base station sending, terminal is used for carrying out what down-going synchronous were used,
Including short leader sequence (S-Preamble) and long preamble (L-Preamble).
Used as one of mode three preferably embodiment, the information of the index and A and/or B of S-Preamble sequences is deposited
In mapping relations, terminal checks the mapping by the index of S-Preamble sequences after decoding S-Preamble sequences
Relation, can both know the information of A and/or B.Than preferably, the mapping relations can be configured by standard default.
As another preferably embodiment of mode three, the index of L-Preamble sequences and the information of A and/or B
There are mapping relations, terminal checks mapping by the index of L-Preamble sequences after decoding L-Preamble sequences
Relation, can both know the information of A and/or B.Than preferably, the mapping relations can be configured by standard default.
By the speed matching method of the control channel of the present embodiment, can be according to actual environment, flexible configuration control letter
The modulation coding mode in road, while signaling consumption is saved, can ensure that user being capable of smoothly access system and and base again
Stand (eNB) carry out uplink and downlink data transfer, improve the efficiency of data transfer.
Preferred embodiment two
The present invention proposes a kind of speed matching method of control channel, the frame in the present embodiment be using OFDM technology and
Frame, the mobile communication system basic parameter in the mobile communication system of configuration tdd frame structure can adopt the ginseng shown in table 1
Number.
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, in control channel (CCH)
Including one or more control signalings (Control Signal, referred to as CS), the lowest-order modulating-coding side that CS can be adopted
Formula is B, and wherein, A and B will have identical coding and decoding characteristic.
Used as a preferably embodiment, identical coding and decoding characteristic includes following three kinds of modes：
Mode one：Will be with the CS using modulation coding mode B using the maximum transmission distance of the SICH of modulation coding mode A
Maximum transmission distance identical.
Mode two：A and B can be same modulation coding mode；
Mode three：Identical coding and decoding characteristic refers to that A and B has identical Modulation order Product code Rate, and wherein, modulating-coding is imitated
Rate refers to the useful data bit numbers transmitted in each modulated sub-carriers.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferably, A and B can be processed in the following manner：
Mode one：A and/or B can be configured by standard default；
Mode two：The information of B is carried in system information channel (SICH)；
Mode three：The information of A and/or B can be carried in targeting sequencing；
It should be noted that the targeting sequencing of mode three is base station sending, terminal is used for carrying out what down-going synchronous were used,
Including short leader sequence (S-Preamble) and long preamble (L-Preamble).
Used as one of mode three preferably embodiment, the information of the index and A and/or B of S-Preamble sequences is deposited
In mapping relations, terminal checks the mapping by the index of S-Preamble sequences after decoding S-Preamble sequences
Relation, can both know the information of A and/or B.Than preferably, the mapping relations can be configured by standard default.
As another preferably embodiment of mode three, the index of L-Preamble sequences and the information of A and/or B
There are mapping relations, terminal checks mapping by the index of L-Preamble sequences after decoding L-Preamble sequences
Relation, can both know the information of A and/or B.Than preferably, the mapping relations can be configured by standard default.
Used as another preferably embodiment, the modulation coding mode that each CS is adopted is by control channel head
(ControlChannel Header, referred to as CCHH) is indicating.Than preferably, the CCHH is located in CCH, positional information and
Modulation coding mode is configured by standard default, or is carried in the sich；The modulation coding mode of CCHH is C, and C will be had with A
Identical coding and decoding characteristic.
Preferred embodiment three
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, compile by the modulation that control channel (CCH) is adopted
Code mode is B, and wherein, A and B will have identical coding and decoding characteristic.
As one preferred embodiment：A and B will have identical coding and decoding characteristic can include in the following manner it
One：
Mode one：Using modulation coding mode A SICH maximum transmission distance will with using modulation coding mode B
The maximum transmission distance of CCH is identical.
Mode two：A and B can be same modulation coding mode.For example：A and B are BPSK CC 1/2, and comparison is excellent
, the value of A and B is configured by standard default.
Mode three：A and B has identical Modulation order Product code Rate, and wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.
For example：A is BPSK CC 1/2, and B is BPSK CC1/2, then the Modulation order Product code Rate of A and B is all each modulation symbol
Number 0.5bit, than preferably, the value of A and B is configured by standard default.
Again for example：A is BPSK CC 1/2, and B is QPSK CC 1/4, then the Modulation order Product code Rate of A and B is all each modulation
Symbol 0.5bit, than preferably, the value of A and B is configured by standard default.
Again for example：Preferably, A is BPSK CC 1/2, and B is QPSK CC 1/2 and to be repeated twice；The then modulation of A and B
Code efficiency is all each modulation symbol 0.5bit, than preferably, the value of A and B is configured by standard default.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
For example：The spectrum efficiency of system information channel (SICH) is respectively 0.4 (bps/hertz), control channel
(CCH) spectrum efficiency is also 0.4 (bps/hertz).
Preferred embodiment four
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, for A, the value of A can be configured the modulation coding mode that system information channel (SICH) is adopted by standard default,
Or by carrying in targeting sequencing.For B, wherein, A will have identical the modulation coding mode that control channel (CCH) is adopted with B
Coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).In the present embodiment, when the value of A is carried in targeting sequencing, as a preferably embodiment, S-
Preamble sequences index and A information exist mapping relations, terminal decoding S-Preamble sequences after, by S-
The index of Preamble sequences checks mapping relations, can both know the information of A, and the mapping relations can be matched somebody with somebody by standard default
Put.Used as another preferably embodiment, there are mapping relations in the information of the index and A of L-Preamble sequences, eventually
After decoding L-Preamble sequences the mapping relations are checked by the index of L-Preamble sequences, can both know A's in end
Information, the mapping relations can be configured by standard default.
For B, used as a preferably embodiment, B can be carried the modulation coding mode that control channel (CCH) is adopted
In system information channel (SICH), when decoding terminals after SICH, it is possible to know that the modulation that control channel (CCH) is adopted is compiled
Code mode.
Preferably, the mode that A and B is selected can be one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCH using modulation coding mode B are most
Big transmission range is identical.
Mode two：A and B can be same modulation coding mode；
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission；
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
In the above-mentioned preferred implementation of the present embodiment, when the modulation coding mode B that control channel (CCH) is adopted is selected
Principle be with A be same modulation coding mode when, the information of B can also be sent to by terminal using manner below：
Configured by standard default or by carrying the information that B and A is modulation coding mode of the same race, terminal in SICH channels
After the information of A has been known, then directly obtain the modulation coding information of B.
Preferred embodiment five
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, for A, the value of A can be configured the modulation coding mode that system information channel (SICH) is adopted by standard default.
For B, the value of B is carried in targeting sequencing the modulation coding mode that control channel (CCH) is adopted, and wherein, A and B will have phase
Same coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).
In the present embodiment, the value of B is carried in targeting sequencing, used as a preferably embodiment, S-
Preamble sequences index and B information exist mapping relations, terminal decoding S-Preamble sequences after, by S-
The index of Preamble sequences checks mapping relations, can both know the information of B, and the mapping relations can be matched somebody with somebody by standard default
Put.Used as another preferably embodiment, there are mapping relations in the information of the index and B of L-Preamble sequences, eventually
After decoding L-Preamble sequences mapping relations are checked by the index of L-Preamble sequences, the letter of B can be both known in end
Breath, the mapping relations can be configured by standard default.
Preferably, the mode that A and B is selected is one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCH using modulation coding mode B are most
Big transmission range is identical.
Mode two：A and B can be same modulation coding mode；
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.
Mode four：A and B has identical spectrum efficiency；
Preferred embodiment six
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, compile by the modulation that control channel (CCH) is adopted
Code mode is B, and the value carrying of A and B is in targeting sequencing.A and B will have identical coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).In the present embodiment, the value of A and B is carried in targeting sequencing, used as a preferably embodiment, S-
There are mapping relations in the information of the index and A and B of Preamble sequences, terminal is led to after decoding S-Preamble sequences
The index for crossing S-Preamble sequences checks mapping relations, can both know the information of A and B, and the mapping relations can be by standard
Default configuration.Information presence one as another preferably embodiment, the index of L-Preamble sequences and A and B is reflected
Penetrate relation, terminal checks mapping relations by the index of L-Preamble sequences after decoding L-Preamble sequences, both can be with
Know the information of A and B, the mapping relations can be configured by standard default.
Preferably, the mode that A and B is selected can be one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCH using modulation coding mode B are most
Big transmission range is identical.
Mode two：A and B can be same modulation coding mode；
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission；
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferred embodiment seven
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, control channel (CCH) include one or
Multiple control signaling (Control Signal, CS), for B, wherein, A and B will for the lowest-order modulation coding mode that CS can be adopted
There is identical coding and decoding characteristic.
Used as a preferably embodiment, identical coding and decoding characteristic includes following three kinds of modes：
Mode one：Will be with the CS using modulation coding mode B using the maximum transmission distance of the SICH of modulation coding mode A
Maximum transmission distance identical.
Mode two：A and B can be same modulation coding mode.For example：A and B are BPSK CC 1/2, and comparison is excellent
, the value of A and B is configured by standard default；
Mode three：A and B has identical Modulation order Product code Rate, and wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.For example：A is BPSK CC 1/2, and B is BPSK CC1/2, then the Modulation order Product code Rate of A and B
The value for being all each modulation symbol 0.5bit, A and B is configured by standard default；Again for example：A is BPSK CC 1/2, and B is QPSK
CC 1/4, then the Modulation order Product code Rate of A and B be all the value of each modulation symbol 0.5bit, A and B and configured by standard default；Again
For example：A is BPSK CC 1/2, and B is QPSK CC 1/2 and to be repeated twice；Then the Modulation order Product code Rate of A and B is all each tune
Symbol 0.5bit processed, than preferably, the value of A and B is configured by standard default.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferred embodiment eight
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, for A, the value of A can be configured the modulation coding mode that system information channel (SICH) is adopted by standard default,
Or carry in targeting sequencing；Control channel (CCH) include one or more control signalings (Control Signal,
CS), for B, wherein, A and B will have identical coding and decoding characteristic to the lowest-order modulation coding mode that CS can be adopted.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).
In the present embodiment, the value of A is carried in targeting sequencing, used as a preferably embodiment, S-
Preamble sequences index and A information exist mapping relations, terminal decoding S-Preamble sequences after, by S-
The index of Preamble sequences checks mapping relations, can know the information of A, and the mapping relations can be configured by standard default.
Used as another preferably embodiment, there are mapping relations in the information of the index and A of L-Preamble sequences, terminal exists
After decoding L-Preamble sequences, mapping relations are checked by the index of L-Preamble sequences, the information of A can be known, should
Mapping relations can be configured by standard default.
In the present embodiment, control channel (CCH) include one or more control signalings (Control Signal,
CS), the lowest-order modulation coding mode that CS is adopted is carried in the system information channel (SICH), the SICH when decoding terminals for B
Afterwards, it is possible to know the lowest-order modulation coding mode B that CS is adopted.
Preferably, the mode that A and B is selected can be one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the maximum of the CS using modulation coding mode B
Transmission range is identical.
Mode two：A and B can be same modulation coding mode；
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission；
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferably, in the above-mentioned preferred implementation of the present embodiment, as the lowest-order modulation coding mode B that CS is adopted
Selection principle be with A be same modulation coding mode when, the information of B can also be sent to terminal in the following way：By
Standard default is configured or by carrying the information that B and A is modulation coding mode of the same race in SICH channels, and terminal is knowing A
Information after, then can directly obtain the modulation coding information of B.
Preferred embodiment nine
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted for A, can be matched somebody with somebody by standard default by the value of A
Put；Control channel (CCH) includes one or more control signalings (Control Signal, CS), and it is minimum that CS can be adopted
Rank modulation coding mode is B, and the value carrying of B is in targeting sequencing.A and B will have identical coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).
In the present embodiment, the value of B is carried in targeting sequencing, used as a preferably embodiment, S-
Preamble sequences index and B information exist mapping relations, terminal decoding S-Preamble sequences after, by S-
The index of Preamble sequences checks mapping relations, can know the information of B, and the mapping relations can be configured by standard default.
Used as another preferably embodiment, there are mapping relations in the information of the index and B of L-Preamble sequences, terminal exists
After decoding L-Preamble sequences, mapping relations are checked by the index of L-Preamble sequences, the information of B can be known, should
Mapping relations can be configured by standard default.
Preferably, the mode that A and B is selected is one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCH using modulation coding mode B are most
Big transmission range is identical.
Mode two：A and B can be same modulation coding mode.
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferred embodiment ten
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, the modulation coding mode that system information channel (SICH) is adopted is for A；Control channel (CCH) include one or
Multiple control signaling (Control Signal, CS), the lowest-order modulation coding mode that CS can be adopted is for B.The value of A and B
Carry in targeting sequencing.A and B will have identical coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).
In the present embodiment, the value of A and B is carried in targeting sequencing, used as a preferably embodiment, S-
There are mapping relations in the information of the index and A and B of Preamble sequences, terminal is led to after decoding S-Preamble sequences
The index for crossing S-Preamble sequences checks mapping relations, can both know the information of A and B, and the mapping relations can be by standard
Default configuration.Information presence one as another preferably embodiment, the index of L-Preamble sequences and A and B is reflected
Penetrate relation, terminal checks mapping relations by the index of L-Preamble sequences after decoding L-Preamble sequences, both can be with
Know the information of A and B, the mapping relations can be configured by standard default.
Preferably, the mode that A and B is selected is one below：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCH using modulation coding mode B are most
Big transmission range is identical.
Mode two：A and B can be same modulation coding mode.
Mode three：A and B have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
Preferred embodiment 11
A kind of data transmission method is present embodiments provided, radio frames in the present embodiment are to adopt OFDM technology
And configure the frame of the mobile communication system of the frame structure of TDD, the system basic parameter can adopt table 1 shown in configuration,
In the present embodiment, for A, the value of A can be configured the modulation coding mode that system information channel (SICH) is adopted by standard default,
Or by carrying in targeting sequencing；Control channel (CCH) include one or more control signalings (Control Signal,
CS), the lowest-order modulation coding mode that CS can be adopted is for B.The value of A and B is carried in targeting sequencing.A and B will have phase
Same coding and decoding characteristic.
In the present embodiment, basic frame structure includes short leader sequence (S-Preamble) and long preamble (L-
Preamble).
In the present embodiment, when the value of A carries the time in targeting sequencing, as a preferably embodiment, S-
Preamble sequences index and A information exist mapping relations, terminal decoding S-Preamble sequences after, by S-
The index of Preamble sequences checks mapping relations, can know the information of A, and the mapping relations can be configured by standard default.
Used as another preferably embodiment, there are mapping relations in the information of the index and A of L-Preamble sequences, terminal exists
After decoding L-Preamble sequences, mapping relations are checked by the index of L-Preamble sequences, the information of A can be known, should
Mapping relations can be configured by standard default.
In the present embodiment, control channel (CCH) includes one or more control signalings (CS), the tune that each CS is adopted
Coded system processed is indicated by control channel head (CCHH).Than preferably, the CCHH is located in CCH, positional information and modulation are compiled
Code mode C is configured by standard default, or is carried in the sich.
Preferably, the mode that A and C is selected is at least one of：
Mode one：Maximum transmission distance using the SICH of modulating-coding A and the CCHH using modulation coding mode C are most
Big transmission range is identical.
Mode two：A and C can be same modulation coding mode.
Mode three：A and C have identical Modulation order Product code Rate.Wherein, Modulation order Product code Rate refers to each modulated sub-carriers
The useful data bit numbers of upper transmission.
Mode four：A and B have identical spectrum efficiency, wherein, spectrum efficiency refer to per unit band width (1 hertz),
The data bit number that can be transmitted in unit interval (1 second).
It should be noted that the frame structure that adopted with NUHT standards of above-described embodiment and parameter list are as an example, but
It is the frame structure and parameter list is only the preferred scheme of the application, is not intended as the restriction of the technical scheme of the application.
By above-described embodiment, there is provided a kind of data transmission method and device, can be according to actual environment, flexible configuration
The modulation coding mode of control channel, had both saved signaling consumption, can ensure that user being capable of smoothly access system and and eNB again
Carry out uplink and downlink data transfer.It should be noted that these technique effects are not above-mentioned all of embodiment being had
Have, some have the technical effect that what some preferred implementations could be obtained.
Obviously, those skilled in the art should be understood that each module or each step of the above-mentioned present invention can be with general
Computing device realizing, they can be concentrated on single computing device, or are distributed in multiple computing devices and are constituted
Network on, alternatively, they can be realized with the executable program code of computing device, such that it is able to be stored in
Executed by computing device in storage device, or they are fabricated to each integrated circuit modules respectively, or by them
Multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hard
Part and software are combined.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of data transmission method, it is characterised in that include：
The first modulation coding mode for being adopted of system information channel and control channel in configuration radio frames adopted second
The coding and decoding characteristic of modulation coding mode is identical, and wherein, the radio frames are using orthogonal frequency division multiplex OFDM and configuring time division
Frame in the mobile communication system of duplexing tdd frame structure；
Carry out data transmission in the radio frames.
2. method according to claim 1, it is characterised in that one of the in the following manner system letter in configuration radio frames
The coding and decoding characteristic of the second modulation coding mode that the first modulation coding mode and control channel adopted by breath channel is adopted
Identical：
Configure the system information channel for adopting the first modulation coding mode and the control for adopting the second modulation coding mode
The transmission range of channel processed is identical；
It is identical modulation coding mode to configure first modulation coding mode and second modulation coding mode；
Configure first modulation coding mode identical with the Modulation order Product code Rate of second modulation coding mode；
Configure first modulation coding mode identical with the spectrum efficiency of second modulation coding mode.
3. method according to claim 1 and 2, the second modulation coding mode that the control channel is adopted include：
The modulation coding mode corresponding to all control signalings that the control channel includes；
The modulation corresponding to minima in the Modulation order Product code Rate that all control signalings that the control channel includes are used
Coded system；
The modulating-coding corresponding to minima in the spectrum efficiency that all control signalings that the control channel includes are used
Mode.
4. method according to claim 3, it is characterised in that each control signaling is used in all control signalings
Modulation coding mode by the control channel head being located in the control channel indicating.
5. method according to claim 4, it is characterised in that the modulation coding mode of the control channel head and/or position
Confidence breath is indicated in the system information channel by system configuration or carrying.
6. method according to claim 4, it is characterised in that the modulation coding mode of the control channel head and described
One modulation coding mode is identical.
7. method according to claim 1 and 2, it is characterised in that also include：
First modulation coding mode described in system configuration and/or second modulation coding mode；
Second modulation coding mode is carried in the system information channel；
First modulation coding mode and/or second modulation coding mode are carried in targeting sequencing, wherein, described before
Lead the sequence that down-going synchronous are carried out for terminal that sequence sends for base station.
8. method according to claim 7, it is characterised in that first modulation coding mode and/or described second is adjusted
Coded system processed is carried in the targeting sequencing, indicates first modulation coding mode and described second in the following manner
Modulation coding mode：
Determine first index of the short leader sequence S-Preamble in the targeting sequencing；Index using described first and preset
Corresponding relation of first index indicate first modulation coding mode and/or second modulation coding mode, wherein,
The corresponding relation of first index is first index and first modulation coding mode and/or first index and institute
State the corresponding relation of the second modulation coding mode；Or
Determine second index of the long preamble L-Preamble in the targeting sequencing；Index using described second and preset
Corresponding relation of second index indicate first modulation coding mode and/or second modulation coding mode, wherein,
Described second index corresponding relation for this second index with first modulation coding mode and/or this second index with described
The corresponding relation of the second modulation coding mode.
9. a kind of data transmission device, it is characterised in that include：
Configuration module, the first modulation coding mode and control channel that the system information channel for configuring in radio frames is adopted
The coding and decoding characteristic of the second modulation coding mode for being adopted is identical, and wherein, the radio frames are to use OFDM
Frame in the mobile communication system of OFDM configuring time division duplex tdd frame structure；
Transport module, for carrying out data transmission in the radio frames.
10. device according to claim 9, it is characterised in that the configuration module is used for matching somebody with somebody one of in the following manner
Put the second modulation corresponding to the first modulation coding mode and the control channel corresponding to the system information channel in radio frames to compile
The coding and decoding characteristic of code mode is identical：
Configure the system information channel of first modulation coding mode and the control channel of second modulation coding mode
Transmission range is identical；
Configure first modulation coding mode and second modulation coding mode uses identical modulation coding mode；
Configure first modulation coding mode identical with the Modulation order Product code Rate of second modulation coding mode；
Configure first modulation coding mode identical with the spectrum efficiency of second modulation coding mode.
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| CN108282301A (en) * | 2017-01-06 | 2018-07-13 | 电信科学技术研究院 | A kind of data transmission method, apparatus and system |
| CN113316252A (en) * | 2020-02-27 | 2021-08-27 | 北京新岸线移动多媒体技术有限公司 | Method and device for realizing frequency domain multiplexing in wireless communication system |
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| CN101278533A (en) * | 2005-09-30 | 2008-10-01 | 松下电器产业株式会社 | Radio transmission device, and radio transmission method |
| CN102035806A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting dynamic scheduling information (DSI) |
| CN102036398A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Relay node (RN) and method thereof for transmitting data |
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| US8724648B2 (en) * | 2009-09-30 | 2014-05-13 | Nokia Corporation | Enhanced control signaling for backhaul link |
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| CN101278533A (en) * | 2005-09-30 | 2008-10-01 | 松下电器产业株式会社 | Radio transmission device, and radio transmission method |
| CN102035806A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Method and system for transmitting dynamic scheduling information (DSI) |
| CN102036398A (en) * | 2009-09-29 | 2011-04-27 | 中兴通讯股份有限公司 | Relay node (RN) and method thereof for transmitting data |
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