CN103517275A - Method of device to device communication and apparatus thereof - Google Patents

Method of device to device communication and apparatus thereof Download PDF

Info

Publication number
CN103517275A
CN103517275A CN201210215565.2A CN201210215565A CN103517275A CN 103517275 A CN103517275 A CN 103517275A CN 201210215565 A CN201210215565 A CN 201210215565A CN 103517275 A CN103517275 A CN 103517275A
Authority
CN
China
Prior art keywords
described
signal
module
frequency resource
subscriber equipment
Prior art date
Application number
CN201210215565.2A
Other languages
Chinese (zh)
Other versions
CN103517275B (en
Inventor
刘勇
杨凯
蔡立羽
Original Assignee
上海贝尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔股份有限公司 filed Critical 上海贝尔股份有限公司
Priority to CN201210215565.2A priority Critical patent/CN103517275B/en
Publication of CN103517275A publication Critical patent/CN103517275A/en
Application granted granted Critical
Publication of CN103517275B publication Critical patent/CN103517275B/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals

Abstract

The invention provides a method of carrying out device to device communication in a LTE-TDD cellular wireless communication system. The method comprises the following steps that frequency resources are distributed to user equipment which needs to carry out the device to device communication, wherein a format of the frequency resources is the same with a format used by a cellular link in the cellular wireless communication system; the user equipment carries out the device to device communication on the frequency resources, wherein the user equipment uses same wireless access modes on a sending terminal and receiving terminal.

Description

The method and apparatus of device-to-device communication

Technical field

The present invention relates to wireless communication technology field, relate in particular to device-to-device communication.

Background technology

General, in cellular radio communication network, for example, in the Long Term Evolution LTE of 3GPP or advanced LTE (Long Term Evolution, or LTE-ALong Term Evolution-Advance), two subscriber equipmenies (UE) communicate via base station (eNB).Yet, in order to meet the demand of Internet resources effective use and the demand to new services, the requirement of the direct device-to-device of application (Device to Device, D2D) communication has been proposed.By D2D, communicate by letter, can share the load of base station, also can increase by the mode of mobile relay the covering of base station.Therefore in LTE-A, D2D communication has been accepted as a kind of important enhancing to cellular mobile communication.Particularly, in LTE time division duplex (LTE-TDD Time Division Duplex) system, because uplink downlink is used identical frequency range, be especially applicable to adopting D2D communication.

Yet, existing LTE-TDD system can not realize D2D communication, what the transceiver that main cause is existing LTE-TDD UE used at transmitting terminal and receiving terminal is different wireless access ways, that transmitter uses is the multiplexing SC-FDMA of single carrier frequency division (Single Carrier-Frequency Division Multiple Access), and that receiver use is OFDM 0FDMA (Orthogonal Frequency Division Multiple Access), therefore cannot direct communication between UE, thereby also cannot realize the D2D communication between UE.In addition, introduce D2D communication and also may cause interfering with each other between cellular communication link and D2D communication link in LTE-TDD system, therefore how to realize channeling, avoiding interference is also to introduce the problem that D2D communication must solve.

In prior art, in order to address the above problem, some relevant work have been carried out, the FlashLinQ technology that for example high pass (Qualcomm) company proposes.The main points of this technical scheme comprise:

Allocate one section of special-purpose frequency spectrum in advance and communicate by letter for D2D,

In UE, increase a set of transceiver that works in above-mentioned frequency range and be exclusively used in D2D communication.

The weak point of this scheme is, as the outer solution of a kind of band, it need to additionally take valuable frequency resource, therefore can reduce accordingly for the frequency resource of cellular communication system; And this part resource cannot dynamically reclaim, cause also cannot not using these resources when there is no D2D communication requirement, caused the waste of frequency resource; Need in UE, increase a set of independent transceiver in addition, this has greatly increased cost and the complexity of UE.

Summary of the invention

For this reason, LTE-TDD cellular communication system needs D2D communication solution in a kind of new band, this scheme should be without extra frequency spectrum, and must solve the problem of channeling and dynamic frequency allocation, accordingly also need the transceiver of UE to improve to support this scheme, and must be simply and cheaply to this improvement of UE.

For solving the aforementioned problems in the prior, the present invention proposes a kind of new scheme that realizes D2D communication in LTE-TDD cellular radio Communication system, uses to carry out with the frequency resource of cellular radio Communication system same format that D2D communicates by letter and the transceiver that improves UE uses same wireless access way to be supported in sending and receiving end.

Particularly, according to a first aspect of the invention, a kind of method of carrying out device-to-device communication in LTE-TDD cellular radio Communication system is provided, comprise: to the user equipment allocation frequency resource that need to carry out described device-to-device communication, wherein, the form of described frequency resource is identical with the form that cellular link in described cellular radio Communication system is used; And described subscriber equipment carries out described device-to-device communication in described frequency resource, wherein, described subscriber equipment uses identical wireless access way at transmitting terminal and receiving terminal.

Preferably, described multiplexing on frequency domain for carrying out the shared frequency resource of the frequency resource of user equipment allocation of described device-to-device communication and the ascending honeycomb link in described cellular radio Communication system and descending cellular link.

More preferably, described frequency resource is distributed by described cellular radio Communication system Zhong base station, the method also comprises: described base station sends the first signaling message to described subscriber equipment, and described the first signaling message is indicated described frequency resource to described subscriber equipment; Described subscriber equipment receives described the first signaling message that described base station sends.

More preferably, described base station sends the second signaling message to described subscriber equipment, and described the second signaling message is indicated the change of described frequency resource to described subscriber equipment; Described subscriber equipment receives described second signaling message of described base station transmission and in the frequency resource of described change, carries out described device-to-device communication.

Preferably, wherein said frequency resource is distributed by the described subscriber equipment that need to carry out described device-to-device communication.

More preferably, wherein said identical wireless access way is orthogonal frequency division multiplex OFDM A or the multiplexing SC-FDMA of single carrier frequency division.

According to a second aspect of the invention, a kind of transmitter that arrives devices communicating in the subscriber equipment of LTE-TDD cellular radio Communication system for support equipment is provided, comprise: discrete Fourier transform module, for input signal being carried out to the signal after discrete Fourier transform (DFT) is converted; Modulation module, for by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated; Cyclic Prefix insert module, inserts the signal after Cyclic Prefix is inserted for the signal to after described modulation; D/A converter module, carries out digital-to-analogue conversion for the signal to after described insertion and obtains armed signal; Transmitter module, for launching described armed signal; Wherein, also comprise mode selection module, for selecting described in whether bypass discrete Fourier transform module and described input signal being directly inputted to described modulation module.

Preferably, between described Cyclic Prefix insert module and described D/A converter module, also comprise power control module, for described in described mode selection module is selected bypass during discrete Fourier transform module, the signal after the described insertion of described Cyclic Prefix insert module output is carried out to power control.

More preferably, described mode selection module receives the indication information being sent by base station; According to described indication information, carry out described selection.

According to a third aspect of the invention we, provide a kind of method transmitting in the subscriber equipment of LTE-TDD cellular radio Communication system, comprised the following steps: b. has carried out the signal after discrete Fourier transform (DFT) is converted to input signal; C. by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated; D. the signal after described modulation is inserted to the signal after Cyclic Prefix is inserted; E. the signal after described insertion is carried out to digital-to-analogue conversion and obtain armed signal; F. launch described armed signal; Wherein, further comprising the steps of before described step b: a. selects whether to skip described step b and directly carries out described step c.

Preferably, when described step a selects to skip described step b and described input signal is directly inputted to described step c, between described steps d and described step e, also comprise step g, the signal after described insertion is carried out to power control.

More preferably, described step a also comprises the indication information that reception is sent by base station; According to described indication information, carry out described selection.

According to a forth aspect of the invention, provide a kind of receiver that arrives devices communicating in the subscriber equipment of LTE-TDD cellular radio Communication system for support equipment, having comprised: receiver module, the signal that obtains receiving for receiving wireless signal; Analog-to-digital conversion module, obtains the signal after analog-to-digital conversion for the described signal receiving is carried out to analog-to-digital conversion; Remove cyclic prefix module, for the signal to after described analog-to-digital conversion, remove the signal after Cyclic Prefix is removed; Demodulation module, carries out OFDM demodulation for the signal to after described removal and obtains the signal after demodulation; Balance module, carries out frequency domain equalization for the signal to after described demodulation and obtains the signal after equilibrium; Contrary discrete Fourier transform module, carries out contrary discrete Fourier transform (DFT) for the signal to after described equilibrium and obtains output signal; Wherein, also comprise: module is selected in output, for selecting balance module and described contrary discrete Fourier transform module described in whether bypass, the signal after described demodulation is directly exported.

Preferably, described output selects module to receive the indication information being sent by base station; According to described indication information, carry out described selection.

According to a fifth aspect of the invention, provide a kind of method that receives signal in the subscriber equipment of LTE-TDD cellular radio Communication system, having comprised: m. has received the signal that wireless signal obtains receiving; N. the described signal receiving is carried out to analog-to-digital conversion and obtain the signal after analog-to-digital conversion; O. the signal after described analog-to-digital conversion is removed to the signal after Cyclic Prefix is removed; P. the signal after described removal carries out OFDM demodulation and obtains the signal after demodulation; Q. the signal after described demodulation carries out frequency domain equalization and obtains the signal after equilibrium; R. the signal after described equilibrium carries out obtaining output signal against discrete Fourier transform (DFT); Wherein, before described step q, also comprise: s. selects step q and described step r described in whether bypass and the signal after described demodulation is directly exported.

Preferably, described step s receives the indication information being sent by base station; According to described indication information, carry out described selection.

In the present invention, by using the frequency format identical with cellular radio Communication system to communicate by letter for device-to-device, can utilize existing frequency resource and without extra increase, the while can be realized the effectively multiplexing of frequency, avoid interference; By by base station, frequency resource being controlled, can realize dynamic frequency allocation; By transmitter being increased to the simple modifications of bypass and power control module, can make transmitter can launch SC-FDMA signal, can launch OFDMA signal again, to realize direct communication between UE; By receiver being increased to the simple modifications of frequency equalizer and inverse Fourier transform module, can make receiver can receive SC-FDMA signal and can receive OFDMA signal again, to realize direct communication between UE.Therefore adopt the solution of the present invention, can in LTE-TDD cellular communication system, realize simply and easily the function of D2D communication, solved the problem that prior art exists.

Accompanying drawing explanation

By reading the following detailed description to non-limiting example with reference to accompanying drawing, further feature of the present invention, object and advantage will be more obvious.

Fig. 1 shows the channeling of up link in existing LTE-TDD system;

Fig. 2 shows the channeling of down link in existing LTE-TDD system;

Fig. 3 shows according to the channeling of a kind of D2D communication of the present invention and cellular communication system up link;

Fig. 4 shows according to the channeling of a kind of D2D communication of the present invention and cellular communication system down link;

Fig. 5 shows according to the channeling of another kind of D2D communication of the present invention and cellular communication system up link;

Fig. 6 shows according to the channeling of another kind of D2D communication of the present invention and cellular communication system down link;

Fig. 7 shows according to a kind of D2D communication frequency method of salary distribution of the present invention;

Fig. 8 show according to of the present invention in the user equipment (UE) of LTE-TDD cellular radio Communication system for supporting the transmitter of D2D communication;

Fig. 9 show according to of the present invention in the user equipment (UE) of LTE-TDD cellular radio Communication system for supporting the receiver of D2D communication.

Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device/module.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.

As Fig. 1, shown in Fig. 2, in LTE-TDD system, what up link was used is SC-FDMA access, and what down link was used is OFDMA access.No matter up or descending, by the mode of frequency domain multiplexing, can support frequency resource allocation flexibly.So-called channeling is also that different user terminals is used different frequency resources to communicate.As shown in FIG., the frequency resource of different bandwidth can be distributed according to concrete state of affairs in base station to different UE, thereby these frequency resources can not form crossover at frequency domain multiplexing.On the other hand, the OFDMA access that the SC-FDMA access that up link is used and down link are used has adopted very similar parameter configuration, comprises identical sub-carrier space, and identical unit bandwidth takies number of subcarriers and identical circulating prefix-length etc.That is to say, the frequency resource form distributing for uplink downlink is identical.

Therefore the present invention proposes, and using the frequency resource form same with cellular communication system is D2D allocation of communications frequency resource.As shown in Figures 3 to 6, for D2D allocation of communications corresponding frequency resource, the form that the cellular communication link of the form of this component frequency resource and existing LTE-TDD system is used is identical.In order to reduce the interference to other cellular communication activities, when carrying out frequency resource allocation, can be with reference to the method for cellular communication system, the frequency resource that frequency resource that this component frequency resource takies with up SC-FDMA link on frequency domain simultaneously and downlink OFDMA link are taken is multiplexing.Corresponding UE is used identical wireless access way to carry out the transmitting-receiving of D2D communication data in this frequency resource Shang sending and receiving end.Consider the design of existing LTE-TDD terminal, preferably use OFDMA or SC-FDMA mode, one of receiver or transmitter can be continued to use original design without modification like this.But applicable equally other the wireless access way of the present invention, such as CDMA etc.Fig. 3, Fig. 4 shows D2D communication and uses OFDMA mode, and the frequency resource that D2D communication is used is simultaneously multiplexing with up SC-FDMA link and descending OFDMA link, the frequency resource that to be also the frequency resource used of D2D communication use from up SC-FDMA link and descending OFDMA link is all different; Fig. 5, Fig. 6 shows D2D communication and uses SC-FDMA mode, and the frequency resource that D2D communication is used is simultaneously multiplexing with up SC-FDMA link and descending OFDMA link, the frequency resource that to be also the frequency resource used of D2D communication use from up SC-FDMA link and descending OFDMA link is all different.

While carrying out D2D communication in base station range, the distribution of said frequencies resource can be determined by base station, base station is being determined according to network condition after the frequency resource of distributing to D2D communication, send the first signaling message and notify corresponding UE, corresponding UE obtains corresponding frequency resource according to the first signaling message receiving, and carries out D2D communication.Can also support in this case by base station, the frequency resource of D2D communication dynamically to be adjusted, when base station determines the frequency resource of D2D communication dynamically to adjust according to current network condition, base station sends the second signaling message and notifies corresponding UE, corresponding UE obtains the frequency resource after corresponding adjustment according to the second signaling message receiving, and uses the frequency resource after this adjustment to carry out D2D communication.By this dynamic adjustment, can make D2D communication and cellular radio Communication realize the flexible allocation of resource, adapt to different network conditions.For example, when cellular radio Communication load is higher in network, can suitably reduces and distribute to the resource that D2D communication is used, and when cellular radio Communication load is lower, can increase the resource of distributing to D2D communication.

In addition, while carrying out D2D communication outside base station range, the distribution of said frequencies resource can be decided in its sole discretion by the UE in requisition for carrying out D2D communication, as shown in Figure 7, by UE, distributes voluntarily certain band frequency resource to communicate.This decision can be made by a side of initiating communication or the opposing party of communication, also can be made through consultation by the both sides that communicate by letter.Can, in the situation that base station covering does not reach, guarantee that user still can realize some application by possessing the UE of D2D communication function like this.

D2D communication according to said method, requires UE to possess the ability of using identical wireless access way to carry out the transmitting-receiving of D2D communication data.But that the UE transmitter that existing LTE-TDD system is used adopts is SC-FDMA, and receiver adopts, be OFDMA, therefore do not possess this ability, must be improved the D2D communication means that could support the present invention's proposition.The general application scenarios of considering D2D communication has following characteristics: the distance between the UE communicating is nearly (being generally less than 30 meters) very, and the channel quality between UE is better, and application needs D2D communication to support high rate data transmission etc.Therefore the present invention proposes, the preferred OFDMA of identical wireless access way or the SC-FDMA that in D2D communication, adopt, such preferred version had both fully taken into account the feature of D2D communication, consider again the compatibility with existing equipment, can, so that one of the receiver of existing UE or transmitter can continue to use and not improve, on cost, be also economical.

Due in UE, cost is maximum, and volume the best part is mainly radio circuit part, therefore the present invention proposes the scheme of not changing radio circuit and only digital circuit part being modified.

Fig. 8 shows the block diagram according to a kind of transmitter of the present invention, this transmitter can either be the same with existing LTE-TDD UE, transmitting is for the SC-FDMA signal of cellular communication up link, can launch again the OFDMA signal that D2D communication according to the present invention is used, like this, the receiver section of UE is not used as any change, because the D2D signal of communication receiving is the identical OFDMA signal using with cellular communication down link.

This transmitter comprises discrete Fourier transform module 81, for input signal being carried out to the signal after discrete Fourier transform (DFT) is converted;

Modulation module 82, for by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated;

Cyclic Prefix insert module 83, inserts the signal after Cyclic Prefix is inserted for the signal to after described modulation;

D/A converter module 84, carries out digital-to-analogue conversion for the signal to after described insertion and obtains armed signal;

Transmitter module 85, for launching described armed signal;

Also comprise mode selection module 80, for selecting described in whether bypass discrete Fourier transform module and described input signal being directly inputted to described modulation module.

When UE need to send data to base station, mode selection module 80 is selected not bypass discrete Fourier transform module 81, and at this moment transmitter is to input signal (a 0, a 1..., a m-1) processing identical with existing UE, finally transmitting signal be SC-FDMA signal, can be for the ul transmissions of cellular communication.When UE need to carry out D2D communication, mode selection module 80 is selected bypass discrete Fourier transform module 81, at this moment input signal is without discrete Fourier transform (DFT) but map directly to and carry out OFDM modulation on subcarrier, and therefore the signal of last transmitting is OFDMA signal.

Consider that OFDMA signal generally has higher moment transmitting power than SC-FDMA signal, in order to improve peak-to-average force ratio, can also preferably between Cyclic Prefix insert module 83 and D/A converter module 84, increase a power control module 86, when UE need to carry out D2D communication, power control module 86 can carry out power control to the signal of Cyclic Prefix insert module 83 outputs, reaches the effect that reduces peak-to-average force ratio.

Because above-mentioned improvement only relates to digital circuit part, so mode selection module 80 can carry out pattern conversion easily according to the indication of the base station of receiving, the wireless access way transmitting is switched.

Below introduce again the corresponding signal transmitting method of provided by the present invention and above-mentioned transmitter, in view of steps characteristic wherein and the architectural feature in above-mentioned transmitter have corresponding relation, will conform to the principle of simplicity.

The method that this transmits, comprises the following steps: b. carries out the signal after discrete Fourier transform (DFT) is converted to input signal; C. by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated; D. the signal after described modulation is inserted to the signal after Cyclic Prefix is inserted; E. the signal after described insertion is carried out to digital-to-analogue conversion and obtain armed signal; F. launch described armed signal; Wherein, further comprising the steps of before described step b: a. selects whether to skip described step b and directly carries out described step c.

Preferably, when described step a selects to skip described step b and described input signal is directly inputted to described step c, between described steps d and described step e, also comprise step g, the signal after described insertion is carried out to power control.

More preferably, described step a also comprises that the indication information sending according to the base station receiving carries out described selection.

Fig. 9 shows the block diagram according to a kind of receiver of the present invention, this receiver can either be the same with existing LTE-TDD UE, receive the OFDMA signal that cellular communication down link is used, can receive again the SC-FDMA signal that D2D communication according to the present invention is used, like this, the transmitter section of UE is not used as any change, because the D2D signal of communication of transmitting is the identical SC-FDMA signal using with cellular communication up link.

This receiver comprises receiver module 91, the signal that obtains receiving for receiving wireless signal;

Analog-to-digital conversion module 92, obtains the signal after analog-to-digital conversion for the described signal receiving is carried out to analog-to-digital conversion;

Remove cyclic prefix module 93, for the signal to after described analog-to-digital conversion, remove the signal after Cyclic Prefix is removed;

Demodulation module 94, carries out OFDM demodulation for the signal to after described removal and obtains the signal after demodulation;

Balance module 95, carries out frequency domain equalization for the signal to after described demodulation and obtains the signal after equilibrium;

Contrary discrete Fourier transform module 96, carries out contrary discrete Fourier transform (DFT) for the signal to after described equilibrium and obtains output signal;

Also comprise that output selects module 97, for selecting balance module 95 and described contrary discrete Fourier transform module 96 described in whether bypass, the signal after described demodulation is directly exported.

When UE need to receive the data of base station transmission, mode selection module 97 is selected balance module 95 and described contrary discrete Fourier transform module 96 described in bypasses and the signal after described demodulation is directly exported, at this moment receiver processing is to received signal identical with existing UE, finally signal (a of output 0, a 1..., a m-1) be OFDMA signal, can be for receiving the downlink transmission of cellular communication.When UE need to carry out D2D communication, mode selection module 97 is selected balance module S95 and described contrary discrete Fourier transform module 96 described in not bypass, at this moment receive signal through after OFDM demodulation, first by balance module 95, carry out the compensation of wireless channel frequency selectivity, and then through contrary discrete Fourier transform (DFT), the therefore signal (a of last output 0, a 1..., a m-1) be SC-FDMA signal.

Because above-mentioned improvement only relates to digital circuit part, so mode selection module 97 can carry out pattern conversion easily according to the indication of the base station of receiving, processing mode is to received signal switched.

Below introduce again the corresponding signal acceptance method of provided by the present invention and above-mentioned receiver, in view of steps characteristic wherein and the architectural feature in above-mentioned receiver have corresponding relation, will conform to the principle of simplicity.

The method that this receives signal, comprising: m. receives the signal that wireless signal obtains receiving; N. the described signal receiving is carried out to analog-to-digital conversion and obtain the signal after analog-to-digital conversion; O. the signal after described analog-to-digital conversion is removed to the signal after Cyclic Prefix is removed; P. the signal after described removal carries out OFDM demodulation and obtains the signal after demodulation; Q. the signal after described demodulation carries out frequency domain equalization and obtains the signal after equilibrium; R. the signal after described equilibrium carries out obtaining output signal against discrete Fourier transform (DFT); Wherein, before described step q, also comprise: s. selects step q and described step r described in whether bypass and the signal after described demodulation is directly exported.

Preferably, the indication information that described step s sends according to the base station receiving carries out described selection.

Above embodiments of the invention are described, but the present invention is not limited to specific system, equipment and concrete agreement, those skilled in that art can make various distortion or modification within the scope of the appended claims.

The those skilled in the art of those the art can, by research specification, disclosed content and accompanying drawing and appending claims, understand and implement other changes of the execution mode to disclosing.In the claims, word " comprises " element and the step of not getting rid of other, and wording " one " is not got rid of plural number.In the present invention, " first ", " second " only represent title, do not represent orbution.In the practical application of invention, a part may execute claims the function of middle quoted a plurality of technical characterictics.Any Reference numeral in claim should not be construed as the restriction to scope.

Claims (16)

1. in LTE-TDD cellular radio Communication system, carry out a method for device-to-device communication, comprising:
A. be the user equipment allocation frequency resource that need to carry out described device-to-device communication, wherein, the form of described frequency resource is identical with the form that cellular link in described cellular radio Communication system is used; And
B. described subscriber equipment carries out described device-to-device communication in described frequency resource, and wherein, described subscriber equipment uses identical wireless access way at transmitting terminal and receiving terminal.
2. method according to claim 1, wherein said multiplexing on frequency domain for carrying out the shared frequency resource of the frequency resource of user equipment allocation of described device-to-device communication and the ascending honeycomb link in described cellular radio Communication system and descending cellular link.
3. method according to claim 2, wherein said frequency resource is distributed by described cellular radio Communication system Zhong base station, after described steps A, before described step B, also comprises:
Described base station sends the first signaling message to described subscriber equipment, and described the first signaling message is indicated described frequency resource to described subscriber equipment;
Described subscriber equipment receives described the first signaling message that described base station sends.
4. method according to claim 3, also comprises after wherein said step B:
Described base station sends the second signaling message to described subscriber equipment, and described the second signaling message is indicated the change of described frequency resource to described subscriber equipment;
Described subscriber equipment receives described second signaling message of described base station transmission and in the frequency resource of described change, carries out described device-to-device communication.
5. method according to claim 2, wherein said frequency resource is distributed by the described subscriber equipment that need to carry out described device-to-device communication.
6. according to the method described in any one in claim 1 to 5, wherein said identical wireless access way is orthogonal frequency division multiplex OFDM A or the multiplexing SC-FDMA of single carrier frequency division.
7. in the subscriber equipment of LTE-TDD cellular radio Communication system, for support equipment, arrive a transmitter for devices communicating, comprising:
Discrete Fourier transform module, for carrying out the signal after discrete Fourier transform (DFT) is converted to input signal;
Modulation module, for by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated;
Cyclic Prefix insert module, inserts the signal after Cyclic Prefix is inserted for the signal to after described modulation;
D/A converter module, carries out digital-to-analogue conversion for the signal to after described insertion and obtains armed signal;
Transmitter module, for launching described armed signal;
Wherein, also comprise mode selection module, for selecting described in whether bypass discrete Fourier transform module and described input signal being directly inputted to described modulation module.
8. transmitter according to claim 7, it is characterized in that, between described Cyclic Prefix insert module and described D/A converter module, also comprise power control module, for described in described mode selection module is selected bypass during discrete Fourier transform module, the signal after the described insertion of described Cyclic Prefix insert module output is carried out to power control.
9. according to the transmitter described in claim 7 or 8, it is characterized in that, described mode selection module also for,
The indication information that-reception is sent by base station;
-according to described indication information, carry out described selection.
10. the method transmitting in the subscriber equipment of LTE-TDD cellular radio Communication system, comprises the following steps:
B. input signal is carried out to the signal after discrete Fourier transform (DFT) is converted;
C. by each sign map of the signal after described conversion to a plurality of subcarriers and carry out the signal after OFDM is modulated;
D. the signal after described modulation is inserted to the signal after Cyclic Prefix is inserted;
E. the signal after described insertion is carried out to digital-to-analogue conversion and obtain armed signal;
F. launch described armed signal;
Wherein, further comprising the steps of before described step b:
A. select whether to skip described step b and directly carry out described step c.
11. methods according to claim 10, wherein, when described step a selects to skip described step b and described input signal is directly inputted to described step c, between described steps d and described step e, also comprise step g, the signal after described insertion is carried out to power control.
12. methods according to claim 11, wherein, described step a also comprises that the indication information sending according to the base station receiving carries out described selection.
13. 1 kinds of receivers that arrive devices communicating in the subscriber equipment of LTE-TDD cellular radio Communication system for support equipment, comprising:
Receiver module, for receiving wireless signal;
Analog-to-digital conversion module, obtains the signal after analog-to-digital conversion for the described wireless signal receiving is carried out to analog-to-digital conversion;
Remove cyclic prefix module, for the signal to after described analog-to-digital conversion, remove the signal after Cyclic Prefix is removed;
Demodulation module, carries out OFDM demodulation for the signal to after described removal and obtains the signal after demodulation;
Balance module, carries out frequency domain equalization for the signal to after described demodulation and obtains the signal after equilibrium;
Contrary discrete Fourier transform module, carries out contrary discrete Fourier transform (DFT) for the signal to after described equilibrium and obtains output signal;
Wherein, also comprise:
Module is selected in output, for selecting balance module and described contrary discrete Fourier transform module described in whether bypass, and the signal after described demodulation is directly exported.
14. receivers according to claim 13, is characterized in that, described output select module also for:
-reception is from the indication information of base station;
-according to described indication information, carry out described selection.
15. 1 kinds of methods that receive signal in the subscriber equipment of LTE-TDD cellular radio Communication system, comprising:
M. receive the signal that wireless signal obtains receiving;
N. the described signal receiving is carried out to analog-to-digital conversion and obtain the signal after analog-to-digital conversion;
O. the signal after described analog-to-digital conversion is removed to the signal after Cyclic Prefix is removed;
P. the signal after described removal carries out OFDM demodulation and obtains the signal after demodulation;
Q. the signal after described demodulation carries out frequency domain equalization and obtains the signal after equilibrium;
R. the signal after described equilibrium carries out obtaining output signal against discrete Fourier transform (DFT);
Wherein, before described step q, also comprise:
S. select step q and described step r described in whether bypass and the signal after described demodulation is directly exported.
16. methods according to claim 15, is characterized in that, described step s also comprises:
-receive the indication information that base station sends;
-according to described indication information, carry out described selection.
CN201210215565.2A 2012-06-27 2012-06-27 The method and apparatus of device-to-device communication CN103517275B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210215565.2A CN103517275B (en) 2012-06-27 2012-06-27 The method and apparatus of device-to-device communication

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201210215565.2A CN103517275B (en) 2012-06-27 2012-06-27 The method and apparatus of device-to-device communication
TW102120335A TWI499344B (en) 2012-06-27 2013-06-07 A method and apparatus for device-to-device communication
PCT/IB2013/001446 WO2014001902A2 (en) 2012-06-27 2013-06-10 Method and apparatus for device-to-device communication

Publications (2)

Publication Number Publication Date
CN103517275A true CN103517275A (en) 2014-01-15
CN103517275B CN103517275B (en) 2016-09-28

Family

ID=48875092

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210215565.2A CN103517275B (en) 2012-06-27 2012-06-27 The method and apparatus of device-to-device communication

Country Status (3)

Country Link
CN (1) CN103517275B (en)
TW (1) TWI499344B (en)
WO (1) WO2014001902A2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104780498A (en) * 2014-01-10 2015-07-15 宏碁股份有限公司 Method of handling device-to-device signal and device-to-cellular signal and related communication device
WO2015139304A1 (en) * 2014-03-21 2015-09-24 富士通株式会社 Resource pool configuration method, resource selection method and apparatus and communication system
CN105357716A (en) * 2015-12-10 2016-02-24 北京北方烽火科技有限公司 Resource distribution method and device
CN106105344A (en) * 2014-03-21 2016-11-09 索尼公司 Telecommunication installation and method
CN106464478A (en) * 2014-06-16 2017-02-22 Lg 电子株式会社 Method and apparatus for transmitting and receiving signal of device to device terminal in wireless communication system
WO2020142991A1 (en) * 2019-01-10 2020-07-16 富士通株式会社 Method and device for side link resource reuse and indication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522682B (en) 2014-01-31 2016-07-13 Nec Corp Channel configuration in device-to-device communications

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1725749A (en) * 2005-07-12 2006-01-25 南开大学 Communication system with very-high frequency and ultrahigh frequency band high frequency band availability
CN101521651A (en) * 2009-04-09 2009-09-02 哈尔滨工业大学 Multiple-address signal processing method of wideband satellite communication link in next-generation communication system
CN101765208A (en) * 2008-12-26 2010-06-30 华为技术有限公司 Method for distributing resources, network equipment and wireless system
WO2012037160A1 (en) * 2010-09-13 2012-03-22 Qualcomm Incorporated Method, apparatus and computer program product to facilitate use of lte channelization structures and waveforms for peer-to- peer communications

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7260369B2 (en) * 2005-08-03 2007-08-21 Kamilo Feher Location finder, tracker, communication and remote control system
CN101388867B (en) * 2007-09-11 2012-12-19 中兴通讯股份有限公司 Resource scheduling method based on OFDM system
WO2009057039A2 (en) * 2007-10-30 2009-05-07 Koninklijke Philips Electronics N.V. Method for indicating allocation of resources
WO2009149561A1 (en) * 2008-06-12 2009-12-17 Nortel Networks Limited Systems and methods for sc-fdma transmission diversity
US9485069B2 (en) * 2010-04-15 2016-11-01 Qualcomm Incorporated Transmission and reception of proximity detection signal for peer discovery
US20130064146A1 (en) * 2010-05-18 2013-03-14 Electronics And Telecommunications Research Institute Direct connection communication between terminals and method for directly transmitting and receiving data between terminals for a terminal relay
CN102083138B (en) * 2011-01-14 2017-04-05 北京邮电大学 A kind of D2D user to can the multiple phone user's resources of concurrent multiplexing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1725749A (en) * 2005-07-12 2006-01-25 南开大学 Communication system with very-high frequency and ultrahigh frequency band high frequency band availability
CN101765208A (en) * 2008-12-26 2010-06-30 华为技术有限公司 Method for distributing resources, network equipment and wireless system
CN101521651A (en) * 2009-04-09 2009-09-02 哈尔滨工业大学 Multiple-address signal processing method of wideband satellite communication link in next-generation communication system
WO2012037160A1 (en) * 2010-09-13 2012-03-22 Qualcomm Incorporated Method, apparatus and computer program product to facilitate use of lte channelization structures and waveforms for peer-to- peer communications

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104780498A (en) * 2014-01-10 2015-07-15 宏碁股份有限公司 Method of handling device-to-device signal and device-to-cellular signal and related communication device
CN104780498B (en) * 2014-01-10 2018-07-20 宏碁股份有限公司 Processing unit is to device signal and device to the method for cell signal
WO2015139304A1 (en) * 2014-03-21 2015-09-24 富士通株式会社 Resource pool configuration method, resource selection method and apparatus and communication system
CN106105344A (en) * 2014-03-21 2016-11-09 索尼公司 Telecommunication installation and method
CN106105344B (en) * 2014-03-21 2019-10-15 索尼公司 Telecommunication installation and method
CN106464478B (en) * 2014-06-16 2020-02-21 Lg 电子株式会社 Method and apparatus for transmitting and receiving device-to-device terminal signal in wireless communication system
CN106464478A (en) * 2014-06-16 2017-02-22 Lg 电子株式会社 Method and apparatus for transmitting and receiving signal of device to device terminal in wireless communication system
CN105357716B (en) * 2015-12-10 2019-04-02 北京北方烽火科技有限公司 A kind of resource allocation methods and device
CN105357716A (en) * 2015-12-10 2016-02-24 北京北方烽火科技有限公司 Resource distribution method and device
WO2020142991A1 (en) * 2019-01-10 2020-07-16 富士通株式会社 Method and device for side link resource reuse and indication

Also Published As

Publication number Publication date
WO2014001902A2 (en) 2014-01-03
TWI499344B (en) 2015-09-01
TW201404236A (en) 2014-01-16
CN103517275B (en) 2016-09-28
WO2014001902A3 (en) 2014-05-08

Similar Documents

Publication Publication Date Title
JP6469786B2 (en) Apparatus and method for supporting higher order multi-user multiple-input multiple-output operation for wireless communication systems
US10455561B2 (en) Mobile station apparatus and base station apparatus
EP3103299B1 (en) Flexible sub-carrier spacing and symbol duration in ofdm based communication systems
US20160336981A1 (en) Receiver, transmitter and radio communication method
US9900139B2 (en) Method and apparatus of transmitting data in multiple RF system
US10575306B2 (en) Multi-subcarrier system with multiple numerologies
US9107212B2 (en) Terminal device for receiving signal in wireless communication system for supporting a plurality of component carriers and method thereof
US20180317251A1 (en) Methods and Arrangements in a Telecommunication System for Configuring Transmission of Sounding Reference Signals
US9474072B2 (en) Advanced technology frame structure with backward compatibility
EP2816858B1 (en) Base station and method of operating a base station
US9742535B2 (en) Method and a system for performing virtualization of a radio access technology over orthogonal frequency-division multiple access (OFDMA) wireless networks and computer program products thereof
US9942081B2 (en) System and method for guard band utilization for synchronous and asynchronous communications
CN105850088B (en) System and method for orthogonal frequency division multiple access (OFDMA) resource allocation
JP6034987B2 (en) User apparatus, base station, and method
US9713161B2 (en) Method and apparatus for reducing interface within radio networks using non-orthogonal signal processing
CN102474495B (en) In a wireless communication system to sending the method and device that the uplink carrier of uplink control information distributes
EP2375616B1 (en) Method for managing sounding reference signal transmission
CN105656531B (en) Communication system, communication means, base station and communication equipment
KR102094842B1 (en) System and method of waveform design for extending the operating bandwidth
KR20180026731A (en) Allocation of resources for data transmission in wireless systems
KR101390606B1 (en) Resource allocation including a dc sub-carrier in a wireless communication system
US9344953B2 (en) Apparatus and method for initialization and mapping of reference signals in a communication system
JP4012167B2 (en) Wireless communication system
CN102160442B (en) Base station apparatuses, terminal apparatuses, wireless communication system having those apparatuses
KR100957311B1 (en) Uplink Scheduling Method and Apparatus for Mobile Communication System

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai

Patentee after: Shanghai NOKIA Baer Limited by Share Ltd

Address before: 201206 Pudong Jinqiao Export Processing Zone, Nanjing Road, No. 388, Shanghai

Patentee before: Shanghai Alcatel-Lucent Co., Ltd.