CN104918320B - LTE terminal high speed straight-through method and terminal - Google Patents
LTE terminal high speed straight-through method and terminal Download PDFInfo
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- CN104918320B CN104918320B CN201510189870.2A CN201510189870A CN104918320B CN 104918320 B CN104918320 B CN 104918320B CN 201510189870 A CN201510189870 A CN 201510189870A CN 104918320 B CN104918320 B CN 104918320B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The present invention provides a kind of methods and terminal that LTE terminal high speed is straight-through, and method includes the temporal synchronization that directintermination is achieved by the prior art, and default is in called state；The terminal default is received subframe at it and period fixed blind solution resource is arranged using ratio of uplink subframe to downlink subframe 1 or proportion 0, and carries out blind solution in the resource；When the terminal is resolved to the mark of oneself, i.e., communicated immediately according to the timing of eating dishes without rice or wine of oneself；When terminal is called, by the way that oneself clock will be deviated, the ratio of uplink subframe to downlink subframe of oneself is adjusted, the mutual transmission subframe of the calling and called terminal is realized and to receive subframe completely corresponding；Calling terminal sends the terminal iidentification that will be called in the blind solution resource of called terminal, can establish the communication for the first time between calling and called terminal by fixed modulation mode.SS later is according to the feature of timing, it is ensured that can complete to emit and receive work each other.System realizes the direct communication between terminal.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of LTE high speed straight-through methods and terminal.
Background technique
The technology of direct communication is horizontal also in 2G at present between terminal, and what is transmitted between terminal also only resides within language
Sound business is also faced with the demands such as data traffic transmission between terminal far from actual requirement is met.
Public network comes into the LTE epoch at present, and existing emergency plan, which passes through, temporarily builds the access net realization of emergency and answer
Anxious communication.But the emergency access net started under special circumstances inherently exists by the risk of secondary attack.It is not simultaneously to appoint
When carve, any place can successfully build emergency system, therefore the demand that LTE terminal is led directly to is particularly evident.
Presently, there are the problem of be that, according to existing agreement, all straight-through terminals can only be counted at the same time
According to transmission or data receiver, this results in that data transmission can not be carried out between terminal.Therefore the main barrier that terminal direct connection faces
Hindering is exactly the corresponding relationship that can not form transmitting-receiving between terminal each other, be unable to ensure between terminal exist simultaneously reception subframe and
Send the correspondence of subframe.
Summary of the invention
The present invention provides a kind of method and terminal that LTE terminal high speed is straight-through, for overcoming in existing LTE technology, due to
It is uncoordinated between being sent and received between terminal, although realize coordinate, fail the problem of making full use of interface-free resources.
To achieve the goals above, the straight-through method of LTE terminal high speed provided by the invention, comprising:
The temporal synchronization that straight-through terminal is achieved by the prior art, default are in called state；The terminal is silent
Recognize using ratio of uplink subframe to downlink subframe 1 or proportion 0, receives subframe at it and period fixed blind solution resource is set.
The terminal in blind solution resource by being parsed, when being resolved to the mark of oneself, i.e., immediately according to oneself
Eat dishes without rice or wine timing, with fixed MCS(Modulation and Coding Scheme, modulation and coding strategy) and arrange RNTI
(Radio Network Temporary Identifier, Network Temporary Identifier) is communicated.
When terminal is called, by deviating oneself clock, the subframe proportion of oneself, subframe proportion adjusted are adjusted
For proportion 0 or proportion 1, realize that the mutual transmission subframe of the calling and called terminal and reception subframe are completely corresponding.
Calling terminal sends the terminal mark that will be called by fixed modulation mode in the resource of the blind solution of called terminal
Know, the communication for the first time between calling and called terminal can be established.Subsequent terminal is according to the feature of timing, it is ensured that each other can be complete
At emitting and receive work.System realizes the direct communication between terminal.
To achieve the goals above, the method that data retransmit in a kind of group service provided by the invention, comprising:
Temporal synchronization is achieved by the prior art in the terminal, and default is in called state, comprising:
The terminal is defaulted using ratio of uplink subframe to downlink subframe 1 or proportion 0, fixes in its reception subframe setting period blind
Resource is solved, is parsed in blind solution resource with fixed RNTI and MCS.
When the terminal is called, by deviating oneself clock, the ratio of uplink subframe to downlink subframe of oneself is adjusted, after adjustment
Subframe proportion for proportion 0 or proportion 1, realize mutual the transmissions subframe of the calling and called terminal and reception subframe it is right one by one
It answers, further includes:
The subframe that receives is the D subframe and S subframe in LTE, when terminal is by sending subframe to opposite end transmission data, together
When opposite end receive subframe be S frame when, only use S frame the same symbol and transmitted.
Data are sent to opposite end according to the requirement selecting modulation mode of other side according to the sequential relationship of oneself by the terminal,
Opposite end is parsed according to the modulation system that oneself is required, and can be in communication with each other, further includes:
Clock and ratio of uplink subframe to downlink subframe are reverted to initial called setting after sign off by the calling terminal,
Entirety reverts to the state of the called terminal.
To achieve the goals above, a kind of terminal provided by the invention, comprising:
Clock module, for realizing the time synchronization between sending and receiving between LTE terminal；Clock tune is provided simultaneously
Whole function；
Tfi module adjusts the ascending-descending subframes of oneself for the calling terminal according to the timing for receiving terminal
Proportion realizes that the transmission subframe of the calling and called terminal and reception subframe correspond to one by one；
Blind solution module for configuring periodically blind solution resource for terminal, and attempts blind solution in blind solution resource；
Receiving module receives the data that other terminals are sent to oneself for the timing according to oneself；
Sending module, the data for sending oneself for the timing according to oneself are sent to other terminals；
Modulation module, for being modulated according to fixed MCS and RNTI, after connection setup, pressing at communication initial stage
The MCS specified according to oneself for opposite end is parsed；It is modulated according to the MCS that opposite end is specified；
Judgment module, for according to blind solution as a result, judge whether there is other terminals call oneself, in connection setup
Afterwards, terminal is the MCS and RNTI required according to opposite end, is communicated according to the timing of oneself；
Computing module, for calculating and receiving the corresponding position for sending subframe special subframe S in subframe, in the subframe
On, it sends subframe and uses the symbol for passing number data consistent with the symbol of S frame.
LTE terminal high speed provided by the invention straight-through method and terminal, method includes that directintermination passes through the prior art
The temporal synchronization realized, default are in called state；The terminal default uses ratio of uplink subframe to downlink subframe 1 or proportion 0,
Blind solution is carried out in the blind solution resource that it receives subframe setting fixation, and in the resource；When the terminal is resolved to the mark of oneself
When, i.e., it is communicated immediately according to the timing of eating dishes without rice or wine of oneself；When terminal is called, by the way that oneself clock will be deviated, adjustment
The ratio of uplink subframe to downlink subframe of oneself realizes that the mutual transmission subframe of the calling and called terminal and reception subframe are completely corresponding；Caller
Terminal sends the terminal iidentification that will be called in the resource of the blind solution of called terminal, can establish master by fixed modulation mode
Communication for the first time between called terminal.Subsequent terminal is according to the feature of timing, it is ensured that can complete to emit each other and receive
Work.System realizes the direct communication between terminal.
Detailed description of the invention
Fig. 1 is the called flow schematic diagram for the method that a kind of LTE terminal high speed that the embodiment of the present invention one provides is led directly to；
Fig. 2 is a kind of calling procedure schematic diagram of method that LTE terminal high speed is straight-through provided by Embodiment 2 of the present invention；
Fig. 3 is the structural schematic diagram for the terminal that a kind of LTE terminal high speed that the embodiment of the present invention three provides is led directly to.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.
Fig. 1 is the embodiment of the present invention one, a kind of called flow schematic diagram for the method that LTE terminal high speed is straight-through.Such as Fig. 1 institute
Show, method includes the following steps:
101, system is the fixed blind solution interface-free resources of the terminal setting in called state.
The blind solution resource is terminal before straight-through according to the fixed period, in the receptions subframe setting fixation of terminal
Interface-free resources.The resource is interface-free resources existing for the period, and resource, which is specifically defined, can be found in third generation partner program
36 serial protocols of (3rd Generation Partnership Project, abbreviation 3GPP) define, and no longer describe herein.
Herein it should be noted that the straight-through only emergency plan there is no access net of LTE terminal.Cause
This is just led directly to when only there is straight-through need.As long as completing relevant parameter configuration before the unlatching of straight-through function,
Furthermore the method for time synchronization uses the prior art between terminal direct connection.
102, called terminal carries out blind solution in blind solution resource.
The called terminal carries out blind solution according to scheduled RNTI, MCS in blind solution resource.The RNTI and MCS is with 101
Blind solution resource setting and meanwhile configure.
103, the mark of oneself is searched in parsing result, if finding the mark of oneself, is further searched for termination
The interface-free resources responded for the first time are received, otherwise, without any processing.
According to the sequential relationship of calling and called, calculates and opposite end receives the symbolic number that subframe is the corresponding transmission subframe of S subframe.
Determine that only using interface-free resources corresponding with special subframe symbol in the corresponding transmission subframe of special subframe is transmitted.
104, according to the timing of oneself, the transmission subframe at oneself sends data.
The RNTI and MCS for sending data and 102 identical, while arranging opposite end and send data next time to be used
RNTI, MCS and used interface-free resources.
This used interface-free resources is determined by the instruction in 103 parsing results.
105, the data that parsing opposite end sends over
In the interface-free resources specified by described 104, according to RNTI and MCS specified by 104, parsing opposite end is sended over
Data.
The called flow provided in this embodiment for realizing that LTE terminal high speed is straight-through, terminal are in by configuring blind solution resource
The terminal of called state is in blind solution resource, and according to fixed RNTI, MCS is parsed.By whether being resolved to the mark of oneself
Knowledge judges whether there is terminal call oneself；By to opposite end is specified transmit next time used in interface-free resources, RNTI and
MCS determines the parameter for parsing of oneself eating dishes without rice or wine next time.
Fig. 2 is the embodiment of the present invention two, a kind of calling procedure schematic diagram for the method that LTE terminal high speed is straight-through.Such as Fig. 2 institute
Show, method includes the following steps:
201, calling terminal is in caller state by adjusting oneself ratio of uplink subframe to downlink subframe and clock.
The calling terminal is described after realizing adjustment by the way that the ratio of uplink subframe to downlink subframe of oneself and clock to be adjusted
To there is reception subframe in calling and called terminal corresponding with subframe is sent each other；
202, the terminal of caller state is in the blind solution resource of the terminal of called state, send target terminal mark and with
And it is received back the interface-free resources answered.
The target terminal is the terminal of caller terminal call, RNTI, MCS of the data of eating dishes without rice or wine of the transmission and described
Called terminal carries out used consistent when blind solution.
203, calling terminal receives the response of the called terminal.
The calling terminal institute is according to LTE timing, which may refer to 36 serial protocols of 3GPP, specified by 202
Interface-free resources parsed.
204, it is specified in the interface-free resources that the data are specified by affiliated data according to 203 received datas
RNTI, MCS send the data of oneself.
205, the resource and its usage mode that subsequent calling terminal is specified according to the called terminal transmit data, until number
Until end of transmission.
206, after calling terminal data end of transmission, initial called state oneself is reverted to.
Realization LTE terminal provided in this embodiment leads directly to calling procedure, and LTE terminal is by adjusting oneself, after realizing adjustment,
Calling terminal and it is called between send subframe each other and to receive subframe corresponding, calling terminal is by blind solution resource, to consolidate
Fixed RNTI scrambling, fixed MCS select rank, send the mark for the terminal that oneself will be called and oneself to receive opposite end corresponding
Resource, notice opposite end oneself needs to establish and contacts with it, and in scheduled resource parsing opposite end response.To realize that
It is established between this straight-through.
Fig. 3 is the embodiment of the present invention three, a kind of terminal schematic diagram that LTE terminal high speed is straight-through.As shown in figure 3, the terminal
It include: receiving module 31, blind solution module 32, subframe proportion adjustment module 33, judgment module 34, clock module 35, modulation module
36, sending module 37 and computing module 38.
Wherein, receiving module 31, when terminal is in called state, receiving module initial stage is in the letter for receiving blind solution resource
Number, after being communicated for the first time between terminal, receiving module receives the data that Correspondent Node is sent.
Further, when terminal is in called state, communicates for the first time to establish, receiving module is according to initial configuration
Carry out reception data.After communicating for the first time, receiving module is received according to the timing of eating dishes without rice or wine of oneself.
Blind solution module 32, for parsing interface-free resources in blind solution resource and receiving when being in called state to the terminal
The signal arrived.
Subframe proportion adjustment module 33 when becoming caller for terminal, according to the ratio of uplink subframe to downlink subframe that oneself is defaulted, is adjusted
It is whole oneself subframe proportion, be defaulted as proportion 0, be then adjusted to proportion 1；Otherwise, then on the contrary.After sign off, calling terminal
Ratio of uplink subframe to downlink subframe is reverted to initially set, integrally returns to the called state of default.
Judgment module 34 completes the transmission eated dishes without rice or wine according to the timing of eating dishes without rice or wine of LTE.
Clock module 35 carries out clock adjustment according to the ratio of uplink subframe to downlink subframe of default, realizes LTE according to the prior art
Synchronization between the sending and receiving of terminal direct connection.
Modulation module 36, according to judgment module judgement as a result, being modulated and scrambling to data are sent, to reception data
It is parsed.
Sending module 37, according to eating dishes without rice or wine as a result, sending data to for judgment module.
Computing module 38 calculates symbol used in transmission subframe corresponding with opposite end special subframe.
In the present embodiment, realize that LTE terminal high speed is straight-through, calling and called terminal is by using ratio of uplink subframe to downlink subframe 1 and upper
The complementarity of downlink subframe proportion 0 is realized the interface-free resources between calling and called are sufficiently sharp by adjusting the clock of calling terminal
With calling and called terminal only needs the timing according to oneself, and the communication between calling and called can be completed.Meanwhile between calling and called, by
It is sufficiently used in interface-free resources, achievees the effect that high-speed transfer.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (2)
1. a kind of method that LTE terminal high speed is straight-through characterized by comprising
Straight-through terminal has realized temporal synchronization, and default is in called state；The terminal default uses ascending-descending subframes
Proportion 1 or proportion 0 receive subframe at it and period fixed blind solution resource are arranged；In blind solution resource with fixed RNTI and
MCS is parsed；
The terminal when being resolved to the mark of oneself, i.e., is eated dishes without rice or wine according to oneself immediately by being parsed in blind solution resource
Timing is communicated with fixed MCS and agreement RNTI；
When the terminal is called, by deviating oneself clock, the ratio of uplink subframe to downlink subframe of oneself, son adjusted are adjusted
Frame proportion is proportion 0 or proportion 1, realizes that the mutual transmission subframe of calling and called terminal and reception subframe are completely corresponding；
The subframe that receives is the D subframe and S subframe in LTE, sends data to opposite end when terminal passes through transmission subframe, while right
When end reception subframe is S subframe, only transmitted with S subframe the same symbol；
Calling terminal sends the terminal iidentification that will be called, i.e., by fixed modulation mode in the blind solution resource of called terminal
The communication for the first time between calling and called terminal can be established；
Subsequent terminal is according to the feature of timing, it is ensured that can complete to emit and receive work each other；
System realizes the direct communication between terminal；
Clock and ratio of uplink subframe to downlink subframe are reverted to initial setting after sign off by the calling terminal, whole to restore
At the state of called terminal.
2. a kind of terminal that LTE terminal high speed is straight-through characterized by comprising
Clock module, for realizing the time synchronization between sending and receiving between LTE terminal；Clock adjustment function is provided simultaneously
Energy；
Tfi module adjusts the ratio of uplink subframe to downlink subframe of oneself, realizes main quilt for calling terminal according to the timing for receiving terminal
It is the transmission subframe of terminal and receives subframe and correspond to one by one；
Blind solution module for configuring periodically blind solution resource for terminal, and attempts blind solution in blind solution resource；
Receiving module receives the data that other terminals are sent to oneself for the timing according to oneself；
Sending module, the data for sending oneself for the timing according to oneself are sent to other terminals；
Modulation module, for being modulated according to fixed MCS and RNTI at communication initial stage, after connection setup, according to certainly
Oneself parses for the MCS that opposite end is specified；It is modulated according to the MCS that opposite end is specified；
Judgment module, for according to blind solution as a result, judge whether there is other terminals call oneself, after the communication has been established, eventually
The MCS and RNTI that end is required according to opposite end, are communicated according to the timing of oneself；
Computing module, for calculating the position for sending subframe corresponding with special subframe S in opposite end reception subframe, in the subframe
On, it sends subframe and uses the symbol of transmission data consistent with the symbol of S frame；
The tfi module is specifically used for, and is proportion 0 or proportion 1 according to the ratio of uplink subframe to downlink subframe of called terminal, and caller is whole
End, which corresponds to the ratio of uplink subframe to downlink subframe of oneself, is revised as proportion 1 or proportion 0；After sign off, calling terminal by oneself
Timing proportion be adjusted to initially to default called ratio of uplink subframe to downlink subframe；
The clock module is specifically used for, and receiving end is synchronous with transmitting terminal, further includes:
The clock of oneself is shifted to an earlier date 2 TTI of 2 TTI or delay, realizes transmission of calling and called terminal by the calling terminal
Frame and reception subframe correspond to one by one；
After sign off, the clock recovery of oneself is initially to default called clock to configure by calling terminal；
The computing module is specifically used for, according to clock module and timing adjust as a result, to calculate oneself corresponding with opposite end S frame
Send the symbol that subframe and the transmission subframe can use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510189870.2A CN104918320B (en) | 2015-04-21 | 2015-04-21 | LTE terminal high speed straight-through method and terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510189870.2A CN104918320B (en) | 2015-04-21 | 2015-04-21 | LTE terminal high speed straight-through method and terminal |
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| Publication Number | Publication Date |
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| CN104918320A CN104918320A (en) | 2015-09-16 |
| CN104918320B true CN104918320B (en) | 2019-01-15 |
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| CN104244413A (en) * | 2013-06-14 | 2014-12-24 | 中兴通讯股份有限公司 | Subframe configuration indication method and system in device-to-device (D2D) communication |
| CN104335639A (en) * | 2012-07-02 | 2015-02-04 | 英特尔公司 | Sounding reference signal (SRS) mechanism for intracell device-to-device (D2D) communication |
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2015
- 2015-04-21 CN CN201510189870.2A patent/CN104918320B/en not_active Expired - Fee Related
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| CN102547984A (en) * | 2012-02-23 | 2012-07-04 | 华为技术有限公司 | Method and device for paging in device-to-device communication |
| CN104335639A (en) * | 2012-07-02 | 2015-02-04 | 英特尔公司 | Sounding reference signal (SRS) mechanism for intracell device-to-device (D2D) communication |
| WO2014119880A1 (en) * | 2013-01-31 | 2014-08-07 | 엘지전자 주식회사 | Method for setting cyclic prefix for d2d (device-to-device) communication in radio communications system and apparatus therefor |
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