CN107995605A - A kind of mobile communication system and terminal direct connection unicast sending control method - Google Patents

A kind of mobile communication system and terminal direct connection unicast sending control method Download PDF

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Publication number
CN107995605A
CN107995605A CN201610959546.9A CN201610959546A CN107995605A CN 107995605 A CN107995605 A CN 107995605A CN 201610959546 A CN201610959546 A CN 201610959546A CN 107995605 A CN107995605 A CN 107995605A
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CN
China
Prior art keywords
terminal
mark
control signaling
link control
pair link
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CN201610959546.9A
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Chinese (zh)
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CN107995605B (en
Inventor
焦慧颖
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China Academy of Information and Communications Technology CAICT
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China Academy of Telecommunications Research CATR
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Priority to CN201610959546.9A priority Critical patent/CN107995605B/en
Publication of CN107995605A publication Critical patent/CN107995605A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. van Duuren system ; ARQ protocols
    • H04L1/1806Go-back-N protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057Physical resource allocation for CQI

Abstract

A kind of mobile communication system of disclosure and terminal direct connection unicast sending control method, first terminal send first kind pair link control signaling, are identified comprising first terminal mark, second terminal mark, resource allocation identification, modulating-coding;Second terminal receives secondary link data signal, the instruction of generation channel quality, HARQ information;The second terminal sends the second class pair link control signaling to first terminal, includes second terminal mark, first terminal mark, channel quality instruction, HARQ information;The first terminal receives the second class pair link control signaling, identification second terminal mark, first terminal mark, channel quality instruction, HARQ information;The modulating-coding mark is determined according to channel quality instruction, sends the secondary link data signal again.The mobile communication system includes base station and at least two terminals.The present invention ensures transmission reliability, improves data rate, improves communication efficiency and security compared with prior art.

Description

A kind of mobile communication system and terminal direct connection unicast sending control method
Technical field
This application involves moving communicating field, more particularly to terminal direct connection to realize communication signaling control method and the shifting of unicast Dynamic communication system.
Background technology
Terminal direct connection (D2D) technology of mobile communication, direct communication is replaced between can making full use of terminal similar in position Generation and the communication between base station, reduce network burden, are widely studied in multiple standardization bodies, including bluetooth, IEEE 802.11p, LTE D2D, LTE V2X etc..D2D/V2X broadcast and multicast pattern are only realized in 4G communication systems at present.But face Development to following 5G stages mobile communication, broadcast and multicast pattern can not meet needs.For example, Wearable, thing The application such as networking needs to carry out terminal direct connection transmission between particular device;For another example in order to support oneself based on collaborative truck Dynamic to drive, car networking technology will also be shared network Development to One-to-one communication car and car (V2V) by simple sensor.
But the terminal direct connection of unicast is realized there are series of technical, in cell mobile communication systems, only base station There is " multithread " transmitting capacity, and terminal can only send data to a base station.In existing 4G systems, base station passes through special thing Reason control passage descending control signaling sends broadcast-type pair link (Sidelink) control signaling (SL Grant) to terminal is sent, Include reception user identifier.Receiving terminal is probably multiple terminals.A circuit-switched data can only be sent by sending terminal, and be appointed by secondary link The resource and format information that business dispatch (SL SA) is used are broadcasted.It and can receive more in receiving terminal, a terminal The straight-through data that a terminal is sent, judge whether need by identifying the reception user identifier in secondary link task scheduling signaling The data to be received.
In the terminal direct connection system of broadcast, the straight-through data of the every other terminal transmission of receiving terminal reception, therefore The information for sending terminal is not included in secondary link task scheduling signaling.But existing terminal direct connection pair link control channel, lead to The mode of resource pool is crossed to send, reliability can not ensure, receiving terminal receives secondary chain during still further aspect existing terminal direct connection Road task scheduling signaling, None- identified sends terminal, therefore transmission terminal can not also obtain the confirmation message of receiving terminal.D2D/ V2X technologies only use the modulating-coding strategy of common 1/3 encoding rates of DPSK, and improving information with the mode repeatedly retransmitted transmits Reliability, when deteriorating received signal quality because of the influence of channel status, receiving terminal can not notify that sending terminal-pair sends Secondary link signal carry out autotelic adjustment and optimization, therefore the efficiency and reliability of secondary link signal transmission is low.
The content of the invention
In the present invention, the present invention will propose a kind of mobile communication system and terminal direct connection unicast regarding to the issue above and send Control method, to solve the problems, such as that secondary link signal transmitting reliability is low at present.
The embodiment of the present application provides a kind of mobile communication terminal and leads directly to unicast sending control method, comprises the following steps:
First terminal uses signal resource, sends first kind pair link control signaling, the first kind pair link control letter Order is identified comprising first terminal mark, second terminal mark, resource allocation identification, modulating-coding;
The first terminal sends the secondary link data signal according to the resource allocation identification;
The second terminal receives the first kind pair link control signaling according to the signal resource, identification described the One terminal iidentification, second terminal mark, resource allocation identification, modulating-coding mark;
The second terminal is identified according to the resource allocation identification, modulating-coding, is received from the first terminal Secondary link data signal, the instruction of generation channel quality, retransfer request;
The second terminal uses the signal resource, and the second class pair link control signaling is sent to the first terminal, The second class pair link control signaling includes second terminal mark, first terminal mark, channel quality instruction, repeat requests letter Breath;
The first terminal receives the second class pair link control signaling according to the signal resource, identification described the Two terminal iidentifications, first terminal mark, channel quality instruction, HARQ information;
The first terminal determines that the modulating-coding identifies according to channel quality instruction;
The first terminal according to change modulating-coding identify, send again the first kind pair link control signaling and The pair link data signal.
As the most preferred embodiment of the method for the present invention, the first kind pair link control signaling includes the first terminal mark The method of knowledge is that the first kind pair link control signaling is scrambled with first terminal mark;The second terminal identification The method of the first terminal mark is that the first kind pair link control signaling is descrambled.
Similar to the above embodimentsly, the method that the second class pair link control signaling includes second terminal mark It is that the second class pair link control signaling is scrambled with second terminal mark;The first terminal identification described second The method of terminal iidentification is that the second class pair link control signaling is descrambled.
The embodiment further optimized as the present invention, described first is sent in the first terminal to the second terminal Before class pair link control signaling, base station sends radio resource control signaling, institute to the first terminal and the second terminal State radio resource control signaling and include signal resource pond and data channel resource pool;The signal resource pond is provided comprising the signaling Source;The data channel resource pond includes the resource represented by the resource allocation identification.
Preferably, the method that the second terminal generates the channel quality instruction is to measure demodulated reference signal, is obtained Channel condition information.Preferably, the method that the second terminal determines the need for retransferring is believed by demodulation reference Number, calculate the signal-to-noise ratio of reception;Determine the need for retransferring according to the signal-to-noise ratio.
Preferably, the first kind pair link control signaling, further includes re-transmission mark.Preferably, the first kind Secondary link control signaling, further includes frequency hopping mark and/or timing advance mark.
Preferably, the channel quality is designated as 4 bit datas, represents and supports that spectrum efficiency is 0.15-5.55bit/ 15 kinds of channel qualities in the range of s/Hz.Preferably, modulating-coding mark, the modulation coding scheme of expression include QPSK, 16QAM、64QAM。
The embodiment of the present application also provides a kind of mobile communication system, comprising at least one base station and at least two terminals, its It is characterized in that, the base station is used to send radio resource control signaling to the first terminal and the second terminal, includes letter Make resource pool and data channel resource pool;The signal resource pond includes the signal resource;The data channel resource Chi Bao Containing the resource represented by the resource allocation identification;
The first terminal, for selecting the signal resource from the signal resource pond, sends first kind pair link Control signaling, includes first terminal mark, second terminal mark, debugging code identification, resource allocation identification;Send secondary chain Circuit-switched data signal, the modulation coding scheme of the pair link data signal identify definite, described secondary link by the modulating-coding Resource shared by data-signal is determined by the resource allocation identification;Send demodulated reference signal, the demodulated reference signal Included in the time slot of the link data signal;The second class pair link control signaling is received, identifies the second terminal Mark, first terminal mark, channel quality instruction, HARQ information;Indicated to determine the modulation according to the channel quality Code identification;If the HARQ information is "Yes", the secondary link data signal is sent again to the second terminal;
The second terminal, for receiving the first kind pair link control signaling, identification first terminal mark, second are eventually End mark, debugging code identification, resource allocation identification;The pair is received according to modulating-coding mark and resource allocation identification Link data signal;Received signal to noise ratio is calculated according to the demodulated reference signal, it is determined whether need to retransmit, produce repeat requests Information;Channel status is determined according to the demodulated reference signal, produces channel quality instruction;Send the second class pair link control letter Order, the second class pair link control signaling include second terminal mark, first terminal mark, channel quality and indicate, again Pass solicited message.
As the most preferred embodiment of mobile communication system of the present invention, the first terminal is also used for the first terminal Mark scrambles the first kind pair link control signaling, the first kind pair link control signaling is included the first terminal Mark;The second terminal is additionally operable to descramble the first kind pair link control signaling, identifies the first terminal mark.
As the most preferred embodiment of mobile communication system of the present invention, the second terminal is also used for the second terminal Mark scrambles the second class pair link control signaling, the second class pair link control signaling is included second class whole End mark;The first terminal is additionally operable to descramble the second class pair link control signaling, identifies the second Terminal Type mark Know.
At least one technical solution of the embodiment of the present application can reach following beneficial effect:Compared with prior art, originally Embodiment introduces repeat requests to ensure the reliability of unicast transmission and data rate.According to the channel situation of cast link Different modulation coding schemes can be selected, to ensure transmission reliability, while improves data rate.The embodiment of the present application is extremely A few technical solution can also reach following beneficial effect:The scrambler sequence of secondary link control channel is also exchanged with hair by the present invention Make arrangements for his funeral the mark at end, so send the scrambling code identification of terminal by being added in secondary link transmitting terminal and scrambled so that receive eventually End can identify the mark for sending terminal by descrambling, and improve the efficiency and security of communication.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the embodiment flow chart of the terminal direct connection unicast sending control method of mobile communication of the present invention;
Fig. 2 is the embodiment flow chart for including scrambler and descrambling in the method for the present invention;
Fig. 3 is the embodiment signal of base station of the present invention and first terminal, the system that second terminal is formed and its communication process Figure.
Embodiment
This patent devises a kind of control signaling for mobile terminal direct connection or car networking unicast communication, by this The design of control signaling, can realize unicast communication using the secondary link circuit resource of D2D/V2V.This patent devises a kind of use first In the secondary link control channel of D2D/V2V unicast communications, unicast communication function is realized, it is a difference in that hair with broadcast group broadcast Mutual identification information can be known mutually with receiving terminal by sending, and cast link can be used for measuring the demodulation reference letter of secondary link Number, channel condition information is obtained, and sendaisle quality indicates (CQI) to send out in newly-designed secondary link control signaling Make arrangements for his funeral to hold and select corresponding modulating-coding strategy (MCS) grade.Newly-designed pair link control signaling can also be according to link shape Condition carries out HARQ information, decides whether to retransmit, if retransmitted, determines the number retransmitted.
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and Corresponding attached drawing carries out technical scheme clear, complete description.Obviously, described embodiment is only the application one Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
Embodiment one
Fig. 1 is the embodiment flow chart of the terminal direct connection unicast sending control method of mobile communication, specifically comprising following step Suddenly:
Step 11, first terminal use signal resource, send first kind pair link control signaling, the first kind pair link Control signaling includes first terminal mark, second terminal mark, resource allocation identification, modulating-coding identify;
Step 12, the first terminal send the secondary link data signal according to the resource allocation identification;
Step 13, the second terminal receive the first kind pair link control signaling, identify according to the signal resource The first terminal mark, second terminal mark, resource allocation identification, modulating-coding mark;
Step 14, the second terminal are identified according to the resource allocation identification, modulating-coding, are received and are come from described first The secondary link data signal of terminal, generation channel quality instruction, and determine whether the secondary link data signal needs to pass again Send, generate HARQ information;
Step 15, the second terminal use the signal resource, and the second class pair link control is sent to the first terminal Signaling processed, the second class pair link control signaling include second terminal mark, first terminal mark, channel quality and indicate, again Pass solicited message;
Step 16, the first terminal receive the second class pair link control signaling, identification according to the signal resource The second terminal mark, first terminal mark, channel quality instruction, HARQ information;
If step 17, the HARQ information are "Yes", the first terminal is indicated according to the channel quality Determine the modulating-coding mark;Separate regression steps 11, the first terminal are identified according to the modulating-coding of change, send institute again State first kind pair link control signaling and the secondary link data signal.
Embodiment two
The information that the present embodiment includes first kind pair link control signaling described in the embodiment of the present invention is done further excellent Change, and illustrate.
First kind pair link control signaling, for dispatching secondary link data signal passage, such as PSSCH (phasical Sidelink shared channel), comprising specifying information it is as shown in table 1.
The information that table 1, first kind pair link control signaling include
In table 1, second terminal mark:Mark for the target terminal for indicating to receive data;Resource allocation identification:For Indicate the resource block location of the transmission secondary link data signal, wherein N represents that secondary link is used for the resource block for sending information (RB) number;Modulating-coding identifies:For indicating modulation and the coding mode of the transmission secondary link data signal;Retransmit mark Know:For indicating this time to send whether data are new data or re-transmission data;Frequency hopping identifies:For indicating the number of distribution According to whether frequency hopping;Timing advance identifies:Adjusted for sending time.
It is pointed out that listing the bit number shared by partial information in table 1, it is only for example.
It is further noted that if the first kind pair link control signaling is added using first terminal mark Disturb, it is understood that the first terminal mark is contained for the first kind pair link control signaling, but at this time, described first Terminal iidentification does not occupy the byte of the first kind pair link control signaling.
Embodiment three
The information that the present embodiment includes the second class pair link control signaling, which is done, further to be optimized and illustrates.
This patent defines the second class pair link control signaling, for providing channel to the secondary link data signal passage of reception Quality indicates and HARQ information.
Preferably, the method that the second terminal generates the channel quality instruction is to measure demodulated reference signal, is obtained Channel condition information.Herein it is pointed out that channel condition information reflects the influence size that channel brings Signal Degrade, Channel quality instruction is a classification mark.
Preferably, the method that the second terminal determines the need for retransferring is, by demodulated reference signal, to calculate The signal-to-noise ratio of reception;Determine the need for retransferring according to the tolerance limit of the signal-to-noise ratio and receiver.Herein it may be noted that , when signal-to-noise ratio meets the tolerance limit of receiver, and the bit error rate (or packet loss) is relatively low, avoid the need for retransferring.
The information that the second class pair link control signaling is included is as shown in table 2.
The information that table 2, the second class pair link control signaling include
Information Bit number (bit)
Second terminal identifies
First terminal identifies 8
Channel quality indicates (CQI) 4
HARQ information (ACK/NACK) 1
The content of secondary link measurement and feedback includes:
Second terminal identifies:Send the mark of the terminal of the second class pair link control signaling.
First terminal identifies:Mark for the terminal for indicating to receive the second class pair link control signaling.
Channel quality indicates, indicates the quality of wireless channel, the modulation coding scheme appropriate for adaptive selection. In order to carry out CQI feedback, the quality of the secondary link data signal of second terminal measurement, leads to used here as secondary link data signal Demodulated reference signal (for example, DM RS pilot tones) on road measures.
HARQ information, is sent using the retransmission time interval of predefined fixation, such as in secondary link data signal 4ms afterwards, generates and sends HARQ information.
It is pointed out that listing the bit number shared by partial information in table 2, it is only for example.For example, work as the channel matter Amount instruction is 4bit, can be used for selecting modulating-coding strategy grade, other 15 kinds combinations represent support spectrum efficiency respectively For 15 kinds of channel qualities in the range of 0.15-5.55bit/s/Hz.HARQ information 1bit, 0 represents " no (NACK) ", 1 generation Table " being (ACK) ".
It is further noted that if the second class pair link control signaling is added using second terminal mark Disturb, it is understood that the second terminal mark is contained for the second class pair link control signaling, but at this time, described second Terminal iidentification does not occupy the byte of the second class pair link control signaling.
Compared with prior art, the present embodiment is introduced to retransmit and asked to ensure the reliability of unicast transmission and data rate Ask.Different modulating-coding strategies can be selected according to the channel situation of cast link, to ensure transmission reliability, is improved at the same time Data rate.And the D2D/V2V of the prior art is only using the modulating-coding strategy of fixed 1/3 encoding rates of QPSK, with multiple weight Transmit the reliability for improving information transmission.In addition the D2D/V2V of the prior art is not carried out automatic retransmission request, that is, does not have Number of retransmissions is adjusted according to channel condition information, but by the way of fixation retransmits several times.
Example IV
Indicate to determine the embodiment of modulation coding scheme by channel quality, first terminal receives the second class pair link Control signaling, identifies channel quality instruction therein, corresponding modulation coding scheme is selected according to CQI value.
Table 3,4 bit CQI numerical tabulars
Embodiment five
In the secondary link control signaling of the prior art, the mark comprising receiving terminal, ensures that receiving terminal can identify Whether the information received is information that the receiving terminal should receive, but receiving terminal can not pass through the secondary link and control Signaling identification sends terminal.When the transmission terminal sends secondary link control signaling, secondary link control channel (PSCCH, Physical sidelink control channel) it is to use cinit=510 scramblers produce sequence.The present invention is by secondary link control The scrambler sequence of channel processed is exchanged with the mark for sending terminal (for example, cinit=C-RNTI), so by secondary link transmitting terminal The scrambling code identification for adding transmission terminal is scrambled so that receiving terminal can pass through the mark for descrambling and identifying and sending terminal.
Fig. 2 is the embodiment flow chart for including scrambler and descrambling in the method for the present invention.It is described to include scrambler and descrambling Embodiment, comprises the following steps that,
Step 21, first terminal use signal resource, send first kind pair link control signaling, the first kind pair link Control signaling includes first terminal mark, second terminal mark, resource allocation identification, modulating-coding identify;The first kind pair The method that link control signaling includes first terminal mark is to be identified with the first terminal to the first kind pair link Control signaling scrambles;
Step 22, the first terminal send the secondary link data signal according to the resource allocation identification;
Step 23, the second terminal receive the first kind pair link control signaling, identify according to the signal resource The first terminal mark, second terminal mark, resource allocation identification, modulating-coding mark;Described in the second terminal identification The method of first terminal mark is that the first kind pair link control signaling is descrambled.
Step 24, the second terminal are identified according to the resource allocation identification, modulating-coding, are received and are come from described first The secondary link data signal of terminal, generation channel quality instruction determine whether the secondary link data signal needs to retransfer;
Step 25, the second terminal use the signal resource, and the second class pair link control is sent to the first terminal Signaling processed, the second class pair link control signaling include second terminal mark, first terminal mark, channel quality and indicate, again Pass solicited message;The method that the second class pair link control signaling includes second terminal mark is, whole with described second End mark scrambles the second class pair link control signaling;
Step 26, the first terminal receive the second class pair link control signaling, identification according to the signal resource The second terminal mark, first terminal mark, channel quality instruction, HARQ information;Described in the first terminal identification The method of second terminal mark is that the second class pair link control signaling is descrambled.
Step 27, the first terminal determine that the modulating-coding identifies according to channel quality instruction;Separate regression steps 21, the first terminal is identified according to the modulating-coding of change, sends the first kind pair link control signaling and described again Secondary link data signal.
Embodiment six
Fig. 3 is the embodiment of base station of the present invention and first terminal, the system that second terminal is formed and its communication process.
The system of the present invention includes at least one base station, at least two terminals.
The base station be used for the first terminal and the second terminal send radio resource control signaling (RRC, Radio Resource Control), the radio resource control signaling includes signal resource pond and data channel resource pool;Institute State signal resource pond and include the signal resource;The data channel resource pond includes the money represented by the resource allocation identification Source.
The first terminal, is used for:The signal resource is selected from the signal resource pond, sends first kind pair link Control signaling, the first kind pair link control signaling include first terminal mark, second terminal mark, debugging coding mark Know, resource allocation identification;
The first terminal, is additionally operable to:Send secondary link data signal, the modulating-coding side of the pair link data signal Formula is determined as modulating-coding mark, the resource shared by the secondary link data signal is true by the resource allocation identification It is fixed;
The first terminal, is additionally operable to:Demodulated reference signal is sent, the demodulated reference signal is included in the number of links It is believed that number time slot in;
The first terminal, is additionally operable to, and receives the second class pair link control signaling, identifies the second terminal mark Know, first terminal mark, channel quality indicate, HARQ information;Determine that the modulation is compiled according to channel quality instruction Code mark;If the HARQ information is "Yes", the secondary link data signal is sent again to the second terminal.
The second terminal, is used for:Receive the first kind pair link control signaling, identification first terminal mark, second Terminal iidentification, debugging code identification, resource allocation identification;According to receiving modulating-coding mark and resource allocation identification Secondary link data signal;Received signal to noise ratio (SINR) is calculated according to the demodulated reference signal, it is determined whether need to retransmit, produce HARQ information;Channel status is determined according to the demodulated reference signal, produces channel quality instruction;Send the second class pair chain Road control signaling, the second class pair link control signaling include second terminal mark, first terminal mark, channel quality Instruction, HARQ information.
As the most preferred embodiment of present system, when the first terminal sends the first kind to the second terminal During secondary link control signaling, the first terminal is additionally operable to:Identified using the first terminal to the first kind pair link control Signaling scrambling processed, makes the first kind pair link control signaling be identified comprising the first terminal;Accordingly, the second terminal It is additionally operable to:The first kind pair link control signaling is descrambled, identifies the first terminal mark.
Similar to the above embodimentsly, when two shown terminals send the second class pair link control to the first terminal During signaling processed, the second terminal is additionally operable to, and the second class pair link control signaling is added using second terminal mark Disturb, the second class pair link control signaling is identified comprising second Terminal Type;Accordingly, the first terminal is also used In:The second class pair link control signaling is descrambled, identifies the second Terminal Type mark.
Embodiment seven
With said system embodiment accordingly, mobile communication terminal of the invention leads directly to unicast sending control method most Good embodiment flow is as follows:
Step 30, the base station send radio resource control signaling to the first terminal and the second terminal, described Radio resource control signaling includes signal resource pond and data channel resource pool;The signal resource pond is provided comprising the signaling Source;The data channel resource pond includes the resource represented by the resource allocation identification.
Step 31, first terminal use the signal resource, send first kind pair link control signaling, the first kind pair Link control signaling includes second terminal mark, resource allocation identification, modulating-coding mark;Identified with the first terminal to institute State the scrambling of first kind pair link control signaling;
Step 32, the first terminal are identified according to the resource allocation identification and modulating-coding, send the secondary link Data-signal;The modulation coding scheme of the pair link data signal is determined by modulating-coding mark, the secondary number of links It is believed that number shared by resource determined by the resource allocation identification;The first terminal also sends demodulated reference signal, described Demodulated reference signal is included in the time slot of the link data signal;
Step 33, the second terminal receive the first kind pair link control signaling according to the signal resource;To institute First kind pair link control signaling descrambling is stated, identifies the first terminal mark;The second terminal mark, resource point are identified again With mark, modulating-coding mark;
Step 34, the second terminal are identified according to the resource allocation identification, modulating-coding, are received and are come from described first The secondary link data signal of terminal, calculates received signal to noise ratio (SINR), it is determined whether need weight according to the demodulated reference signal Pass, produce HARQ information;Channel status is determined according to the demodulated reference signal, produces channel quality instruction;
Step 35, the second terminal use the signal resource, and the second class pair link control is sent to the first terminal Signaling processed, scrambles the second class pair link control signaling with second terminal mark;The second class pair link control Signaling is also comprising first terminal mark, channel quality instruction, HARQ information;
Step 36, the first terminal receive the second class pair link control signaling, to institute according to the signal resource The second class pair link control signaling descrambling is stated, identifies the second terminal mark;Further identify first terminal mark, channel matter Amount instruction, HARQ information;
Step 37, the first terminal determine that the modulating-coding identifies according to channel quality instruction;It is if described HARQ information is "Yes", and separate regression steps 31, the first terminal is identified according to the modulating-coding of change, again described in transmission First kind pair link control signaling and the secondary link data signal.
At least one embodiment of the present invention has the advantages that:Compared with prior art, the present embodiment is in order to ensure The reliability and data rate of unicast transmission, introduce repeat requests.It can be selected according to the channel situation of cast link different Modulation coding scheme, to ensure transmission reliability, while improves data rate.And the prior art is only using fixed modulating-coding Strategy and blindly re-transmission, it is impossible to which number of retransmissions and adjustment modulation coding scheme are adjusted according to channel condition information.
At least one embodiment of the present invention also has the advantages that:Scrambler sequence of the invention by secondary link control channel Row are exchanged with the mark for sending terminal, are so scrambled, made by adding the scrambling code identification of transmission terminal in secondary link transmitting terminal The mark for sending terminal can be identified by descrambling by obtaining receiving terminal, improve the efficiency and security of communication.And in the prior art In secondary link control signaling, receiving terminal can not send terminal by the secondary link control signaling identification.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net Network interface and memory.
Memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Memory is computer-readable medium Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data. The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM), Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability Comprising so that process, method, commodity or equipment including a series of elements not only include those key elements, but also wrapping Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment it is intrinsic will Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described Also there are other identical element in the process of element, method, commodity or equipment.
It will be understood by those skilled in the art that embodiments herein can be provided as method, system or computer program product. Therefore, the application can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Form.Deposited moreover, the application can use to can use in one or more computers for wherein including computer usable program code The shape for the computer program product that storage media is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) Formula.
The foregoing is merely embodiments herein, is not limited to the application.For those skilled in the art For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, be equal Replace, improve etc., it should be included within the scope of claims hereof.

Claims (13)

1. a kind of mobile communication terminal leads directly to unicast sending control method, it is characterised in that
First terminal uses signal resource, sends first kind pair link control signaling, the first kind pair link control signaling bag Identified containing first terminal mark, second terminal mark, resource allocation identification, modulating-coding;
The first terminal sends the secondary link data signal according to the resource allocation identification;
The second terminal receives the first kind pair link control signaling, identification described first is eventually according to the signal resource Hold mark, second terminal mark, resource allocation identification, modulating-coding mark;
The second terminal is identified according to the resource allocation identification, modulating-coding, receives the secondary chain from the first terminal Circuit-switched data signal, the instruction of generation channel quality, retransfer request;
The second terminal uses the signal resource, and the second class pair link control signaling is sent to the first terminal, described Second class pair link control signaling includes second terminal mark, first terminal mark, channel quality instruction, HARQ information;
The first terminal receives the second class pair link control signaling, identification described second is eventually according to the signal resource End mark, first terminal mark, channel quality instruction, HARQ information;
The first terminal determines that the modulating-coding identifies according to channel quality instruction;
The first terminal is identified according to the modulating-coding of change, sends the first kind pair link control signaling and described again Secondary link data signal.
2. mobile communication terminal as claimed in claim 1 leads directly to unicast sending control method, it is characterised in that
The method that the first kind pair link control signaling includes first terminal mark is, with first terminal mark pair The first kind pair link control signaling scrambling;
The second terminal identifies that the method for the first terminal mark is that the first kind pair link control signaling is descrambled.
3. mobile communication terminal as claimed in claim 1 leads directly to unicast sending control method, it is characterised in that
The method that the second class pair link control signaling includes second terminal mark is, with second terminal mark pair The second class pair link control signaling scrambling;
The first terminal identifies that the method for the second terminal mark is that the second class pair link control signaling is descrambled.
4. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
Base station sends radio resource control signaling, the radio resource control signaling to the first terminal and the second terminal Include signal resource pond and data channel resource pool;
The signal resource pond includes the signal resource;
The data channel resource pond includes the resource represented by the resource allocation identification.
5. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The method that the second terminal generates the channel quality instruction is to measure demodulated reference signal, obtains channel status letter Breath.
6. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The method that the second terminal determines the need for retransferring is, by demodulated reference signal, calculates the noise of reception Than;Determine the need for retransferring according to the signal-to-noise ratio.
7. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The first kind pair link control signaling, identifies comprising retransmitting.
8. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The first kind pair link control signaling, includes frequency hopping mark and/or timing advance mark.
9. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The channel quality is designated as 4 bit datas, represents and supports spectrum efficiency in the range of 0.15-5.55bit/s/Hz 15 kinds of channel qualities.
10. the mobile communication terminal as described in claim 1-3 any one leads directly to unicast sending control method, it is characterised in that
The modulating-coding mark, the modulation coding scheme of expression include QPSK, 16QAM, 64QAM.
11. a kind of mobile communication system, includes at least one base station and at least two terminals, it is characterised in that
The base station is used to send radio resource control signaling to the first terminal and the second terminal, includes signal resource Pond and data channel resource pool;The signal resource pond includes the signal resource;The data channel resource pond includes described Resource represented by resource allocation identification;
The first terminal, is used for
The signal resource is selected from the signal resource pond, first kind pair link control signaling is sent, includes described first Terminal iidentification, second terminal mark, debugging code identification, resource allocation identification;
Secondary link data signal is sent, the modulation coding scheme of the pair link data signal is identified really by the modulating-coding Resource shared by fixed, described secondary link data signal is determined by the resource allocation identification;
Demodulated reference signal is sent, the demodulated reference signal is included in the time slot of the link data signal;
The second class pair link control signaling is received, identifies that the second terminal mark, first terminal mark, channel quality refer to Show, HARQ information;The modulating-coding mark is determined according to channel quality instruction;If the HARQ information For "Yes", the secondary link data signal is sent again to the second terminal;
The second terminal, is used for
The first kind pair link control signaling is received, identify that first terminal identifies, second terminal identifies, debug code identification, Resource allocation identification;The secondary link data signal is received according to modulating-coding mark and resource allocation identification;According to institute State demodulated reference signal and calculate received signal to noise ratio, it is determined whether need to retransmit, produce HARQ information;Joined according to the demodulation Examine signal and determine channel status, produce channel quality instruction;
Send the second class pair link control signaling, the second class pair link control signaling includes second terminal mark, the One terminal iidentification, channel quality instruction, HARQ information.
12. mobile communication system as claimed in claim 11, it is characterised in that
The first terminal is additionally operable to
The first kind pair link control signaling is scrambled using first terminal mark, controls the first kind pair link Signaling is identified comprising the first terminal;
The second terminal is additionally operable to
The first kind pair link control signaling is descrambled, identifies the first terminal mark.
13. mobile communication system as claimed in claim 11, it is characterised in that
The second terminal is additionally operable to
The second class pair link control signaling is scrambled using second terminal mark, controls the second class pair link Signaling is identified comprising second Terminal Type;
The first terminal is additionally operable to
The second class pair link control signaling is descrambled, identifies the second Terminal Type mark.
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