CN104918320A - 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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- CN104918320A CN104918320A CN201510189870.2A CN201510189870A CN104918320A CN 104918320 A CN104918320 A CN 104918320A CN 201510189870 A CN201510189870 A CN 201510189870A CN 104918320 A CN104918320 A CN 104918320A
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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 invention provides an LTE terminal high-speed straight-through method and a terminal. The method comprises the following steps that a straight-through terminal achieving time synchronization through the prior art is at a called state by default; the terminal uses the up-down row subframe ratio 1 or the ratio 0 by default, a fixed-period blind solution resource is configured at a received sub frame of the terminal, and blind solution is performed on the resource; when the terminal resolves an own identity, communication is performed immediately according to an own empty time sequence, when the terminal performs calling, the own up-down row subframe ratio is adjusted through a clock which deviates from the terminal, and then the fact that a sending subframe of a calling terminal and a received subsframe of the called terminal completely correspond to each other; and the calling terminal sends a terminal identity to be called on the blind solution resource of the called terminal, and then primary communication between the calling terminal and the call terminal can be established. The terminal subsequently ensures transmitting and receiving to be capable of being completed between the calling terminal and the called terminal according a time sequence characteristic. A system achieves direct communication between the terminals.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of LTE method straight-through at a high speed and terminal.
Background technology
Between terminal, the technology of direct communication is also in 2G level at present, and what transmit between terminal also only rests on speech business, far can not meet actual requirement, also be faced with the demands such as data traffic transmission between terminal.
Current public network has entered the LTE epoch, and existing emergency plan all realizes emergency communication by building emergent Access Network temporarily.But inherently there is the risk of being attacked by secondary in the emergent Access Network started under special circumstances.Be not any moment, emergency system all successfully can be built in any place simultaneously, and the demand that therefore LTE terminal is straight-through is obvious especially.
Current Problems existing is, according to existing agreement, all straight-through terminals can only carry out data transmission or data receiver in the identical time, and this just causes cannot carrying out data transmission between terminal.Therefore the major obstacle that terminal direct connection faces is exactly the corresponding relation that cannot form transmitting-receiving between terminal each other, cannot guarantee the correspondence that there is reception subframe between terminal and send subframe simultaneously.
Summary of the invention
The invention provides a kind of at a high speed straight-through method of LTE terminal and terminal, for overcoming in existing LTE technology, inharmonious owing to sending between reception between terminal, although or realize coordinating, fail to make full use of the problem of interface-free resources.
To achieve these goals, the method that LTE terminal provided by the invention is straight-through at a high speed, comprising:
Straight-through terminal is synchronously temporal by existing techniques in realizing, and acquiescence is in called state; Described terminal acquiescence uses ratio of uplink subframe to downlink subframe 1 or proportioning 0, receives subframe arrange cycle fixing blind solution resource at it.
Described terminal by resolving in blind solution resource, when being resolved to the mark of oneself, namely immediately according to the sequential of eating dishes without rice or wine of oneself, with fixing MCS(Modulation and Coding Scheme, modulation and coding strategy) and arrange RNTI(Radio Network Temporary Identifier, Network Temporary Identifier) communicate.
When terminal is called out, by offseting the clock of oneself, adjust the subframe proportioning of oneself, the subframe proportioning after adjustment is proportioning 0 or proportioning 1, realizes described calling and called terminal transmission subframe each other and receive subframe completely corresponding.
Calling terminal, by fixed modulation mode, the resource of the blind solution of terminal called sends the terminal iidentification that will call out, can set up the communication first between calling and called terminal.Subsequent terminal, according to the feature of sequential, is guaranteed can complete each other and is launched and accept work.System achieves the direct communication between terminal.
To achieve these goals, the method for data re-transmission in a kind of group service provided by the invention, comprising:
Described terminal is synchronously temporal by existing techniques in realizing, and acquiescence is in called state, comprising:
Described terminal acquiescence uses ratio of uplink subframe to downlink subframe 1 or proportioning 0, receives subframe and arranges cycle fixing blind solution resource, blind solution resource is resolved with fixing RNTI and MCS at it.
When described terminal is called out, by offseting the clock of oneself, adjust the ratio of uplink subframe to downlink subframe of oneself, the subframe proportioning after adjustment is proportioning 0 or proportioning 1, realizes described calling and called terminal transmission subframe each other and receives subframe corresponding one by one, also comprise:
Described reception subframe is D subframe in LTE and S subframe, and when terminal sends data by sending subframe to opposite end, opposite end receives subframe simultaneously when being S frame, only uses a S frame same-sign to transmit.
Described terminal is according to the sequential relationship of oneself, and according to the requirement selecting modulation mode of the other side, data are mail to opposite end, the modulation system that opposite end requires according to oneself is resolved, and can intercom mutually, also comprise:
Described calling terminal is after sign off, and clock and ratio of uplink subframe to downlink subframe are reverted to initial called setting, and entirety reverts to the state of described terminal called.
To achieve these goals, a kind of terminal provided by the invention, comprising:
Clock module, for the time synchronized realizing transmission between LTE terminal and between receiving; Clock adjustment function is provided simultaneously;
Tfi module, for the sequential of described calling terminal according to described receiving terminal, adjusts the ratio of uplink subframe to downlink subframe of oneself, and the transmission subframe and the reception subframe that realize described calling and called terminal are corresponding one by one;
Blind solution module, for being the periodic blind solution resource of terminal configuration, and attempts blind solution in blind solution resource;
Receiver module, for receiving according to the sequential of oneself data that other terminal sends to oneself;
Sending module, sends to other terminal for the data sending oneself according to the sequential of oneself;
Modulation module, at the communication initial stage, modulate according to fixing MCS and RNTI, after connection setup, the MCS specified for opposite end according to oneself resolves; The MCS specified according to opposite end modulates;
Judge module, for the result according to blind solution, judged whether that other terminal is in calling oneself, after the communication has been established, namely terminal according to MCS and RNTI that opposite end requires, communicates according to the sequential of oneself;
Computing module, for calculating and receive the position of transmission subframe corresponding to special subframe S in subframe, in this subframe, send subframe institute use biography logarithmic data symbol consistent with the symbol of S frame.
The method that LTE terminal provided by the invention is straight-through at a high speed and terminal, method comprises synchronously temporal by existing techniques in realizing of directintermination, and acquiescence is in called state; Described terminal acquiescence uses ratio of uplink subframe to downlink subframe 1 or proportioning 0, receives subframe and arranges fixing blind solution resource, and carry out blind solution in this resource at it; When described terminal parses is to oneself mark, namely immediately according to the sequential of eating dishes without rice or wine of oneself, communicate; When terminal is called out, by the clock by skew oneself, adjust the ratio of uplink subframe to downlink subframe of oneself, realize described calling and called terminal transmission subframe each other and receive subframe completely corresponding; Calling terminal, by fixed modulation mode, the resource of the blind solution of terminal called sends the terminal iidentification that will call out, can set up the communication first between calling and called terminal.Subsequent terminal, according to the feature of sequential, is guaranteed can complete transmitting and receiving work each other.System achieves the direct communication between terminal.
Accompanying drawing explanation
The called flow schematic diagram of the method that a kind of LTE terminal that Fig. 1 provides for the embodiment of the present invention one is straight-through at a high speed;
The calling procedure schematic diagram of the method that a kind of LTE terminal that Fig. 2 provides for the embodiment of the present invention two is straight-through at a high speed;
The structural representation of the terminal that a kind of LTE terminal that Fig. 3 provides for the embodiment of the present invention three is straight-through at a high speed.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.
Fig. 1 is the embodiment of the present invention one, the called flow schematic diagram of a kind of method that LTE terminal is straight-through at a high speed.As shown in Figure 1, the method comprises the following steps:
101, system is that the terminal being in called state arranges fixing blind solution interface-free resources.
Described blind solution resource is terminal before straight-through according to the fixing cycle, arranges fixing interface-free resources in the reception subframe of terminal.Described resource is the interface-free resources existed in the cycle, and its resource specifically defines see 36 serial protocols definition of third generation partner program (3rd Generation Partnership Project is called for short 3GPP), no longer can describe herein.
It should be noted that, it is only emergency plan when there is not Access Network that LTE terminal leads directly to herein.Therefore, only have when there is straight-through needs, just lead directly to.As long as completed relevant parameter to configure before straight-through function is opened, between terminal direct connection, the method for time synchronized adopts prior art in addition.
102, terminal called carries out blind solution in blind solution resource.
Described terminal called carries out blind solution in blind solution resource according to predetermined RNTI, MCS.Described RNTI and MCS all arranges configure simultaneously with the blind solution resource of 101.
103, in analysis result, search the mark of oneself, if find the mark of oneself, then search opposite end further and receive the interface-free resources responded first, otherwise, do not carry out any process.
According to the sequential relationship of calling and called, to calculate and opposite end reception subframe is the symbolic number of transmission subframe corresponding to S subframe.Determine only to use the interface-free resources corresponding with special subframe symbol to transmit in the transmission subframe that special subframe is corresponding.
104, according to the sequential of oneself, data are sent in the transmission subframe of oneself.
RNTI with MCS of described transmission data is identical with 102, arrange simultaneously opposite end send next time data the interface-free resources that uses RNTI, MCS and use.
This interface-free resources used is determined by the instruction in 103 analysis results.
105, the data that opposite end sends over are resolved
In the interface-free resources specified by described 104, according to RNTI and MCS specified by 104, resolve the data that opposite end sends over.
What the present embodiment provided realizes LTE terminal called flow straight-through at a high speed, and terminal is by the blind solution resource of configuration, and the terminal being in called state is in blind solution resource, and according to fixing RNTI, MCS resolves.Judge whether to there is terminal call oneself by the mark whether being resolved to oneself; By specifying the interface-free resources, RNTI and MCS that transmit and use to opposite end next time, determine the parameter of oneself eating dishes without rice or wine next time to resolve.
Fig. 2 is the embodiment of the present invention two, the calling procedure schematic diagram of a kind of method that LTE terminal is straight-through at a high speed.As shown in Figure 2, the method comprises the following steps:
201, calling terminal is by adjusting oneself ratio of uplink subframe to downlink subframe and clock, is in caller state.
Described calling terminal is by adjusting the ratio of uplink subframe to downlink subframe of oneself and clock, and after realizing adjustment, it is corresponding with transmission subframe that described calling and called terminal exists reception subframe each other;
The terminal of 202, caller state, in the blind solution resource of the terminal of called state, sends the mark of target terminal and and receives the interface-free resources responded.
Described target terminal, be the terminal of calling terminal calling, what use when RNTI, MCS and the described terminal called of the data of eating dishes without rice or wine of described transmission carry out blind solution is consistent.
203, calling terminal receives the response of described terminal called.
Described calling terminal institute is according to LTE sequential, and this sequential can see 36 serial protocols of 3GPP, and the interface-free resources specified by 202 is resolved.
204, the data received according to 203, in the interface-free resources that described data are specified, the data of RNTI, MCS transmission of specifying by affiliated data oneself.
205, the follow-up calling terminal resource of specifying according to described terminal called and occupation mode transmission data thereof, until transfer of data is complete.
206, after calling terminal transfer of data, initial called state oneself is reverted to.
What the present embodiment provided realize LTE terminal leads directly to calling procedure, LTE terminal is by adjustment oneself, realize adjustment after, calling terminal and called between send each other subframe and receive subframe corresponding, calling terminal pass through in blind solution resource, with fixing RNTI scrambling, fixing MCS selects rank, sends the mark of the terminal that oneself will be called out, and oneself accepts the corresponding resource in opposite end, notice opposite end oneself needs to contact with its foundation, and resolves the response of opposite end in predetermined resource.Thus realize setting up each other leading directly to.
Fig. 3 is the embodiment of the present invention three, the terminal schematic diagram that a kind of LTE terminal is straight-through at a high speed.As shown in Figure 3, this terminal comprises: receiver module 31, blind solution module 32, subframe proportioning adjusting module 33, judge module 34, clock module 35, modulation module 36, sending module 37 and computing module 38.
Wherein, receiver module 31, when terminal is in called state, the receiver module initial stage is in the signal receiving blind solution resource, after communicating first between terminal, the data that receiver module received communication opposite end sends.
Further, when terminal is in called state, when communicating first for setting up, receiver module carries out reception data according to initial configuration.First after communication, receiver module receives according to the sequential of eating dishes without rice or wine of oneself.
Blind solution module 32, during for being in called state to described terminal, blind solution resource is resolved the signal that interface-free resources receives.
Subframe proportioning adjusting module 33, when becoming caller for terminal, according to the ratio of uplink subframe to downlink subframe of oneself acquiescence, adjusts the subframe proportioning of oneself, is defaulted as proportioning 0, be then adjusted to proportioning 1; Otherwise, then on the contrary.After sign off, ratio of uplink subframe to downlink subframe is reverted to initial setting by calling terminal, and entirety gets back to the called state of acquiescence.
Judge module 34, the sequential of eating dishes without rice or wine according to LTE completes the transmission of eating dishes without rice or wine.
Clock module 35, according to acquiescence ratio of uplink subframe to downlink subframe, carry out clock adjustment, the reception of leading directly to according to existing techniques in realizing LTE terminal and send between synchronous.
Modulation module 36, according to the result that judge module judges, modulates and scrambling transmission data, resolves reception data.
Sending module 37, according to the result of judge module, sends data to and eats dishes without rice or wine.
Computing module 38, calculates and symbol that transmission subframe corresponding to opposite end special subframe uses.
In the present embodiment, realize LTE terminal straight-through at a high speed, calling and called terminal is by using the complementarity of ratio of uplink subframe to downlink subframe 1 and ratio of uplink subframe to downlink subframe 0, by adjusting the clock of calling terminal, the interface-free resources between calling and called is realized to make full use of, calling and called terminal only needs the sequential according to oneself, can complete the communication between calling and called.Meanwhile, between calling and called, because interface-free resources is fully used, reach the effect of high-speed transfer.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the method that LTE terminal is straight-through at a high speed, is characterized in that, comprising:
Straight-through terminal is synchronously temporal by existing techniques in realizing, and acquiescence is in called state; Described terminal acquiescence uses ratio of uplink subframe to downlink subframe 1 or proportioning 0, receives subframe arrange cycle fixing blind solution resource at it;
Described terminal, by resolving in blind solution resource, when being resolved to the mark of oneself, namely immediately according to the sequential of eating dishes without rice or wine of oneself, communicates with agreement RNTI with fixing MCS;
When terminal is called out, by offseting the clock of oneself, adjust the ratio of uplink subframe to downlink subframe of oneself, the subframe proportioning after adjustment is proportioning 0 or proportioning 1, realizes calling and called terminal transmission subframe each other and receive subframe completely corresponding;
Calling terminal, by fixed modulation mode, the blind solution resource of terminal called sends the terminal iidentification that will call out, can set up the communication first between calling and called terminal;
Subsequent terminal, according to the feature of sequential, is guaranteed can complete transmitting and receiving work each other;
System achieves the direct communication between terminal.
2. the method that LTE terminal according to claim 1 is straight-through at a high speed, is characterized in that, described terminal is synchronously temporal by existing techniques in realizing, and acquiescence is in called state, comprising:
Described terminal acquiescence uses ratio of uplink subframe to downlink subframe 1 or proportioning 0, receives subframe and arranges cycle fixing blind solution resource, blind solution resource is resolved with fixing RNTI and MCS at it.
3. the method that LTE terminal according to claim 1 is straight-through at a high speed, it is characterized in that, when described terminal is called out, by the clock by skew oneself, adjust the ratio of uplink subframe to downlink subframe of oneself, subframe proportioning after adjustment is proportioning 0 or proportioning 1, realizes described calling and called terminal transmission subframe each other and receives subframe corresponding one by one, comprising:
Described reception subframe is D subframe in LTE and S subframe, and when terminal sends data by sending subframe to opposite end, opposite end receives subframe simultaneously when being S subframe, just and S subframe same-sign transmit.
4. the method that LTE terminal according to claim 1 is straight-through at a high speed, is characterized in that,
Described terminal according to time oneself sequential relationship, according to the requirement selecting modulation mode of the other side, data are mail to opposite end, the modulation system that opposite end requires according to oneself is resolved, and can intercom mutually, comprise:
Clock and ratio of uplink subframe to downlink subframe, after sign off, are reverted to initial setting by described calling terminal, and entirety reverts to the state of described terminal called.
5. a terminal, is characterized in that, comprising:
Clock module, for the time synchronized realizing transmission between LTE terminal and between receiving; Clock adjustment function is provided simultaneously;
Tfi module, for the sequential of described calling terminal according to described receiving terminal, adjusts the ratio of uplink subframe to downlink subframe of oneself, and the transmission subframe and the reception subframe that realize described calling and called terminal are corresponding one by one;
Blind solution module, for being the periodic blind solution resource of terminal configuration, and attempts blind solution in blind solution resource;
Receiver module, for receiving according to the sequential of oneself data that other terminal sends to oneself;
Sending module, sends to other terminal for the data sending oneself according to the sequential of oneself;
Modulation module, at the communication initial stage, modulate according to fixing MCS and RNTI, after connection setup, the MCS specified for opposite end according to oneself resolves; The MCS specified according to opposite end modulates;
Judge module, for the result according to blind solution, judged whether that other terminal is in calling oneself, after the communication has been established, namely terminal according to MCS and RNTI that opposite end requires, communicates according to the sequential of oneself;
Computing module, for calculating the position receiving the transmission subframe that special subframe S is corresponding in subframe with opposite end, in this subframe, sending subframe institute and using the symbol transmitting data consistent with the symbol of S frame.
6. terminal according to claim 5, it is characterized in that, described tfi module is specifically for being proportioning 0 or proportioning 1 according to the ratio of uplink subframe to downlink subframe of described terminal called, and the ratio of uplink subframe to downlink subframe correspondence of oneself is revised as proportioning 1 or proportioning 0 by described calling terminal; After sign off, the sequential proportioning of oneself is adjusted to the called ratio of uplink subframe to downlink subframe of initial acquiescence by speaker's terminal.
7. terminal according to claim 5, is characterized in that, described clock module is synchronous specifically for receiving terminal and transmitting terminal, also comprises:
Described calling terminal, shifts to an earlier date 2 TTI or postpones 2 TTI by the clock of oneself, the transmission subframe and the reception subframe that realize described calling and called terminal are corresponding one by one;
After sign off, the clock recovery of oneself is the called clock configuration of initial acquiescence by calling terminal.
8. terminal according to claim 5, is characterized in that, described computing module just specifically for, according to the result of clock module and sequential adjustment adjustment, calculate the U frame that oneself and opposite end S frame are corresponding, and the symbol that this transmission frame can use.
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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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| CN201510189870.2A CN104918320B (en) | 2015-04-21 | 2015-04-21 | LTE terminal high speed straight-through method and terminal |
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| CN104918320A true CN104918320A (en) | 2015-09-16 |
| CN104918320B CN104918320B (en) | 2019-01-15 |
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