CN103002594B - Direct access communication channel method for building up, apparatus and system - Google Patents

Direct access communication channel method for building up, apparatus and system Download PDF

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Publication number
CN103002594B
CN103002594B CN201210516709.8A CN201210516709A CN103002594B CN 103002594 B CN103002594 B CN 103002594B CN 201210516709 A CN201210516709 A CN 201210516709A CN 103002594 B CN103002594 B CN 103002594B
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CN
China
Prior art keywords
terminal
physical layer
direct communication
serving bs
layer resources
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CN201210516709.8A
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Chinese (zh)
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CN103002594A (en
Inventor
王曼
吕波
葛万成
桂任舟
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中兴通讯股份有限公司
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Priority to CN201210516709.8A priority Critical patent/CN103002594B/en
Publication of CN103002594A publication Critical patent/CN103002594A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup

Abstract

The invention discloses a kind of direct access communication channel method for building up, apparatus and systems, wherein this method includes:First terminal sends the first request that direct communication is carried out with second terminal to second terminal;First terminal receives second terminal and confirms the instruction for carrying out direct communication, and establishes the wireless channel for direct communication between first terminal and second terminal.Through the invention, it solves the problems of the channel that direct communication is established by window machine controller in the related technology, improves flexibility and the reliability of direct communication.

Description

Direct access communication channel method for building up, apparatus and system

Technical field

The present invention relates to the communications fields, in particular to a kind of direct communication(Device-to-Device, referred to as D2D, abbreviation is straight-through, also referred to as terminal direct connection technology, also known as equipment room direct communication, and corresponding network can referred to as straight-through net Network, corresponding information can referred to as straight-through information)Channel establishing method, apparatus and system.

Background technology

Wireless communication world is maked rapid progress with the development of wireless technology, such as LAN occurs, Internet of Things etc. is a variety of Novel latticed form, networking is also more and more freely random, and by the time, the constraint of space and network quality is smaller and smaller.But No matter all it is substantially tradition with the communication network architecture and communication pattern of which kind of mode in the existing communication network architecture Communication mode.That is terminal carries out any communication activity with the external world, send any instruction all must by system side, with System side interacts, and can realize.Equipment room direct communication(Device-to-Device, abbreviation is straight-through, and also referred to as terminal is straight Logical technology, corresponding network are known as straight-forward network, the referred to as straight-through information of corresponding information)Mode is different from traditional channel radio Letter.When using equipment room direct communication technology, transmitting terminal(Wireless terminal)Wireless signal directly reach receiving terminal(Another nothing Line terminal), without the routing by core network.Equipment room direct communication technology due to not by base station interactive information, To greatly save Internet resources, and between terminal can flexible networking at any time, reduce cost, and implement to hardware and The change of standard is less, will be LTE+(Wirelessly communicate long term evolution)The most technology of competitiveness.

When two terminal close proximities, if it is possible to realize direct communication between terminal, that is to say, that terminal it Between communication directly realized by " terminal-terminal " such a direct communication pattern, will undoubtedly shorten call duration time, simplify Communication process significantly saves Internet resources, is shunted for core network.Especially needed when between the terminal of two direct communications When transmitting the data of big flow, this direct communication pattern just seems more meaningful.In addition, in public safety field, for example send out When the natural calamities such as Radix Rehmanniae shake, tsunami, the covering from wireless base station is not present, at this moment if wireless terminal and wireless terminal Between can directly be communicated, search-and-rescue work will be more efficient, it is meant that protects more properties, saves more life.

But during establishing the direct communication of equipment room, still needs pass through base station or class in the related art The channel of above-mentioned direct communication is established like other window machine controllers of base station, and is its distribution resource, and nature calamity is occurring In the case of evil, since the covering from wireless base station has been not present, direct communication also can not just be established at all.

For the problems of the channel for establishing direct communication by window machine controller in the related technology, at present not yet It is proposed effective solution scheme.

Invention content

For the problems of the channel for establishing direct communication by window machine controller in the related technology, the present invention carries A kind of direct access communication channel has been supplied to establish scheme, at least to solve the above problems.

According to an aspect of the invention, there is provided a kind of direct access communication channel method for building up, including:First terminal is to Two terminals send the first request that direct communication is carried out with the second terminal;The first terminal receives the second terminal Confirm carry out direct communication instruction, and establish between the first terminal and the second terminal direct communication it is wireless Channel.

Preferably, the first terminal establish for the first terminal and the second terminal direct communication channel it Afterwards, further include:The first terminal judge itself whether in normal operation cellular network coverage area in;If so, The first terminal sends the second request to serving BS, wherein second request is for asking the serving BS for institute State radio channel allocation physical layer resources;If not, the first terminal selects the corresponding all or part of physics of hardware configuration Layer resource allocation gives the wireless channel.

Preferably, the serving BS is that physical layer resources described in the radio channel allocation include:The serving BS For the fixed physical layer resources of the radio channel allocation;Alternatively, the serving BS is used according to dispatch situation and/or resource Situation is the radio channel allocation physical layer resources.

Preferably, the serving BS is the radio channel allocation object according to dispatch situation and/or resource service condition The mode for managing layer resource includes at least one of:Remaining physical layer resources are distributed to the wireless communication by the serving BS Road;The serving BS is by all physical layer resources according to preset pro rate to cellular network and the wireless channel;Institute Serving BS is stated according to the flow demand distribution physical layer resources of the wireless channel to the wireless channel;The serving BS The wireless channel is given according to preset algorithm distribution physical layer resources.

Preferably, the wireless channel includes:Special uplink channel and downlink dedicated channels.

Preferably, the physical layer resources include at least one of:Time interval resource, frequency spectrum resource, time-frequency combined resource.

According to another aspect of the present invention, a kind of direct access communication channel method for building up is provided, including:Second terminal receives The first request sent to first terminal, wherein first request is for asking the second terminal and the first terminal Carry out direct communication;The second terminal is sent to the first terminal for confirming the instruction for carrying out direct communication, and is established Wireless channel for direct communication between the first terminal and the second terminal.

Preferably, the second terminal establishes the wireless communication for the first terminal and the second terminal direct communication After road, further include:The second terminal judge itself whether in normal operation cellular network coverage area in;If It is that the second terminal sends the second request to serving BS, wherein second request is for asking the serving BS to be The radio channel allocation physical layer resources;If not, the second terminal selects the corresponding all or part of object of hardware configuration Layer resource allocation is managed to the wireless channel.

Preferably, the serving BS is that physical layer resources described in the radio channel allocation include:The serving BS For the fixed physical layer resources of the radio channel allocation;Alternatively, the serving BS is used according to dispatch situation and/or resource Situation is the radio channel allocation physical layer resources.

Preferably, the serving BS is the radio channel allocation object according to dispatch situation and/or resource service condition The mode for managing layer resource includes at least one of:Remaining physical layer resources are distributed to the wireless communication by the serving BS Road;The serving BS is by all physical layer resources according to preset pro rate to cellular network and the wireless channel;Institute Serving BS is stated according to the flow demand distribution physical layer resources of the wireless channel to the wireless channel;The serving BS The wireless channel is given according to preset algorithm distribution physical layer resources.

Preferably, the wireless channel includes:Special uplink channel and downlink dedicated channels.

Preferably, the physical layer resources include at least one of:Time interval resource, frequency spectrum resource, time-frequency combined resource.

In accordance with a further aspect of the present invention, it provides a kind of direct access communication channel and establishes device, be located in first terminal, packet It includes:First sending module, for sending the first request for carrying out direct communication with the second terminal to second terminal;First connects Module is received, the instruction of progress direct communication is confirmed for receiving the second terminal;First establishes module, is used for for establishing The wireless channel of direct communication between the first terminal and the second terminal.

Preferably, described device includes:First judgment module, for judging whether itself is in the Cellular Networks of normal operation In the coverage area of network;Second sending module, in the case of for being in the judging result of first judgment module, to clothes Business base station sends the second request, wherein second request is the radio channel allocation object for asking the serving BS Manage layer resource;First distribution module, in the case where the judging result of first judgment module is no, hardware being selected to match It sets corresponding all or part of physical layer resources and distributes to the wireless channel.

In accordance with a further aspect of the present invention, it additionally provides a kind of direct access communication channel and establishes device, be located in second terminal, Including:Second receiving module, the first request sent for receiving first terminal, wherein first request is for asking The second terminal carries out direct communication with the first terminal;Third sending module is used for being sent to the first terminal In the instruction for confirming progress direct communication;Second establishes module, for establishing for the first terminal and the second terminal Between direct communication wireless channel.

Preferably, described device further includes:Second judgment module, for judging whether itself is in the honeycomb of normal operation In the coverage area of network;4th sending module, in the case of for being in the judging result of second judgment module, to Serving BS sends the second request, wherein second request is the radio channel allocation for asking the serving BS Physical layer resources;Second distribution module is used in the case where the judging result of second judgment module is no, described second The corresponding all or part of physical layer resources of terminal selection hardware configuration distribute to the wireless channel.

Further aspect according to the present invention provides a kind of direct access communication channel and establishes system, including above-mentioned is located at first Direct access communication channel in terminal establishes device, further includes that the above-mentioned direct access communication channel in second terminal establishes device.

Through the invention, it is sent to second terminal using first terminal and is asked with the first of second terminal progress direct communication It asks;First terminal receives second terminal and confirms the instruction for carrying out direct communication, and establishes and be used for first terminal and second terminal Between direct communication wireless channel mode, solve the letter for establishing direct communication by window machine controller in the related technology The problems of road improves flexibility and the reliability of direct communication.

Description of the drawings

Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings:

Fig. 1 is the flow chart of direct access communication channel method for building up according to the ... of the embodiment of the present invention;

Fig. 2 is the structure diagram that direct access communication channel according to the ... of the embodiment of the present invention establishes device;

Fig. 3 is the preferred structure block diagram that direct access communication channel according to the ... of the embodiment of the present invention establishes device;

Fig. 4 is the flow chart of another direct access communication channel method for building up according to the ... of the embodiment of the present invention;

Fig. 5 is the structure diagram that another direct access communication channel according to the ... of the embodiment of the present invention establishes device;

Fig. 6 is the preferred structure block diagram that another direct access communication channel according to the ... of the embodiment of the present invention establishes device;

Fig. 7 is the structure diagram that direct access communication channel according to the ... of the embodiment of the present invention establishes system;

Network diagram when Fig. 8 is according to embodiments of the present invention one cellular network operation;

Fig. 9 is straight-forward network schematic diagram when according to embodiments of the present invention two cellular network is not run;

Figure 10 is the method flow diagram of according to embodiments of the present invention three direct communication.

Specific implementation mode

Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

Smoothly to realize that equipment room direct communication, primary problem are the assignment problems of channel resource to be solved.It is multiplexing The channel of legacy network, or increase new channel and be used for equipment room direct communication.In order to solve this problem, it is proposed that realize The dedicated channel of equipment room direct communication, and the device and method of application this dedicated channel realization equipment room direct communication.To The channel resource allocation for solving the problems, such as direct communication between UE, enables direct communication in cellular network normal operation and Cellular Networks Network is smoothed out in the case of being not present.

A kind of direct communication is provided in the present embodiment(D2D)Channel establishing method, Fig. 1 are according to embodiments of the present invention Direct access communication channel method for building up flow chart, as shown in Figure 1, this method comprises the following steps:

Step S102, first terminal send the first request that direct communication is carried out with second terminal to second terminal;

Step S104, first terminal receives second terminal and confirms the instruction for carrying out direct communication, and establishes and be used for first The wireless channel of direct communication between terminal and second terminal.

Through the above steps, first terminal is searching another terminal in preset range to the present embodiment(In the present embodiment In for convenience of describe, be referred to as second terminal)Afterwards, the request for carrying out direct communication is sent to the second terminal(I.e. above-mentioned One request), after the confirmation for receiving second terminal carries out the instruction of direct communication, then between first terminal and second terminal Wireless channel is directly established, there is no the relay and controls by core net even base station for the mode of establishing of this channel, thus Even if in the case where being covered there is no cellular network, remains able to establish direct access communication channel, solve and lead in the related technology The problems of the channel for crossing window machine controller to establish direct communication improves flexibility and the reliability of direct communication.

Wherein, above-mentioned wireless channel includes uplink wireless channel and downlink wireless channel, such as with first terminal To second terminal transmission data as uplink in the case of, then the wireless channel include carried out from first terminal to second terminal it is straight It connects the uplink dedicated wireless channel of letter and carries out the downlink dedicated wireless communication of direct communication from second terminal to first terminal Road;And using second terminal to first terminal transmission data as uplink, then the wireless channel includes whole by first It holds and carries out the downlink dedicated wireless channel of direct communication to second terminal and carried out from second terminal to first terminal directly logical The uplink dedicated wireless channel of letter.

It preferably, can be according to current after establishing the direct access communication channel between first terminal and second terminal To carry out direct access communication channel the distribution of physical layer resources with the presence or absence of cellular network covering, for example, judging in first terminal In the case of itself being in the coverage area of the cellular network of normal operation, first terminal can send to its serving BS and use In the request that request serving BS is above-mentioned direct access communication channel distribution physical layer resources(I.e. above-mentioned second request);In another example In the case where first terminal judges itself to be not in the coverage area of the cellular network of normal operation, first terminal can select Selecting can use(Namely the corresponding all or part of hardware configuration)Physical layer resources distribute to above-mentioned direct access communication channel, example Such as, all physical layer resources can be used to the communication of above-mentioned direct access communication channel by first terminal.Wherein, the hardware of terminal Configuration corresponds to corresponding frequency range, and certain frequency range and time domain and its flexible configuration correspond to corresponding physical layer resources.Here Physical layer resources have allocation optimum and general configuration, that is to say, that the corresponding physical layer resources of UE are divided into quality.Work as Cellular Networks In the absence of network, terminal can be above-mentioned wireless channel(Also referred to as dedicated channel)Preferential selection optimal scheme physical layer resources.

First terminal sends inquiry instruction to the corresponding base station of cellular network, such as obtains the reply of base station, then can determine certainly It is in in the coverage area of the cellular network of normal operation;As do not obtained base station reply, then the honeycomb of normal operation is not at In network coverage.Preferably, it can be static that serving BS, which is the mode of radio channel allocation physical layer resources, namely Serving BS can be that above-mentioned direct access communication channel distributes fixed physical layer resources, that is, when will fix frequency point and/or fix The physical layer resources of gap distribute to wireless channel;Alternatively, the mode that serving BS is radio channel allocation physical layer resources may be used also Be dynamic namely serving BS can according to dispatch situation and/or resource service condition etc., be above-mentioned direct communication nothing Line channel distribution physical layer resources.

Preferably, it may include following that serving BS dynamic, which is the mode that above-mentioned direct access communication channel distributes physical layer resources, At least one mode:Remaining physical layer resources are distributed to wireless channel by serving BS;Serving BS provides all physical layers Source is according to preset pro rate to cellular network and wireless channel;Serving BS according to wireless channel flow demand allotment Layer resource is managed to wireless channel;Serving BS distributes physical layer resources to wireless channel according to preset algorithm.

Preferably, the communication for the ease of first terminal and second terminal is more convenient, can in advance will be above-mentioned straight The wireless channel for connecting letter is divided into special uplink channel(Physical D2D Uplink Channel, referred to as PDUCH)With Downlink dedicated channels(Physical D2D Downlink Channel, referred to as PDDCH).In this way, first terminal With second terminal special uplink channel or downlink dedicated channels can be used respectively according to the mode of agreement in communication process It is communicated, to which contradiction will not be generated.

Preferably, the physical layer resources for being radio channel allocation may include time slot, frequency spectrum resource, and by time, frequency The combined resource of arbitrary the two between rate and space three, the also referred to as resource of the types such as time-frequency combined resource.When therein Gap resource mainly considers that time shaft, frequency spectrum resource mainly consider that frequency axis, time-frequency combined resource consider the group of time and frequency etc. Joint source.

Corresponding to the above method, a kind of direct communication is provided in the present embodiment(D2D)Channel establishes device, is located at the In one terminal, which had carried out repeating no more for explanation for realizing above-described embodiment and preferred embodiment.Such as with Used in lower, the combination of the software and/or hardware of predetermined function may be implemented in term " module ".Although following embodiment is retouched The device stated preferably realized with software, but the realization of the combination of hardware or software and hardware be also may and by structure Think.

Fig. 2 is the structure diagram that direct access communication channel according to the ... of the embodiment of the present invention establishes device, as shown in Fig. 2, the dress Set including:First sending module 22, the first receiving module 24 and first establish module 26, are carried out specifically to modules below It is bright.

First sending module 22, for sending the first request for carrying out direct communication with second terminal to second terminal;The One receiving module 24 is connected with the first sending module 22, and the instruction of progress direct communication is confirmed for receiving second terminal;The One establishes module 26, is connected with the first receiving module 24, for establishing for direct communication between first terminal and second terminal Wireless channel.

The present embodiment is searching another terminal in preset range by above-mentioned module, first terminal(In the present embodiment In for convenience of describe, be referred to as second terminal)Afterwards, it is sent and directly lead to the second terminal by the first sending module 22 The request of letter(I.e. above-mentioned first request), the finger of the confirmation progress direct communication of second terminal is received in the first receiving module 24 After showing, then first terminal and second terminal, which are established by first between module 26, directly establishes wireless channel, this channel Establishing mode, there is no the relay and controls by core net even base station, even if thus there is no the feelings that cellular network covers It under condition, remains able to establish direct access communication channel, solves and direct communication is established by window machine controller in the related technology The problems of channel improves flexibility and the reliability of direct communication.

Fig. 3 is the preferred structure block diagram that direct access communication channel according to the ... of the embodiment of the present invention establishes device, as shown in figure 3, The device can also include:Whether the first judgment module 32 establishes module 26 with first and is connected, for judging itself in normal In the coverage area of the cellular network of operation;Second sending module 34 is connected with the first judgment module 32, for judging first The judging result of module 32 is to send the second request to serving BS, wherein the second request is for asking service in the case of being Base station is radio channel allocation physical layer resources;First distribution module 36 is connected with the first judgment module 32, for sentencing first In the case that the judging result of disconnected module 32 is no, the corresponding all or part of physical layer resources of hardware configuration is selected to distribute to nothing Line channel.

In the present embodiment, another direct communication is additionally provided(D2D)Channel establishing method, Fig. 4 are according to the present invention The flow chart of another direct access communication channel method for building up of embodiment, as shown in figure 4, this method comprises the following steps:

Step S402, second terminal receive the first request that first terminal sends, wherein the first request is for asking the Two terminals carry out direct communication with first terminal;

Step S404, second terminal is sent to first terminal for confirming the instruction for carrying out direct communication, and is established and be used for The wireless channel of direct communication between first terminal and second terminal.

Through the above steps, second terminal is receiving another terminal in preset range to the present embodiment(As described above First terminal)Carry out the request of direct communication(I.e. above-mentioned first request)Afterwards, it is sent to the first terminal and confirms that progress is directly logical The instruction of letter, then directly establishes wireless channel between first terminal and second terminal, this channel establishes mode not By the relay and control of core net even base station, even if in the case where being covered there is no cellular network, remain able to Direct access communication channel is established, solves and asking present in the channel of direct communication is established by window machine controller in the related technology Topic, improves flexibility and the reliability of direct communication.

It preferably, can be according to current after establishing the direct access communication channel between first terminal and second terminal To carry out direct access communication channel the distribution of physical layer resources with the presence or absence of cellular network covering, for example, judging in second terminal In the case of itself being in the coverage area of the cellular network of normal operation, second terminal can send to its serving BS and use In the request that request serving BS is above-mentioned direct access communication channel distribution physical layer resources(I.e. above-mentioned second request);In another example In the case where second terminal judges itself to be not in the coverage area of the cellular network of normal operation, second terminal can be selected Selecting can use(Namely the corresponding all or part of hardware configuration)Physical layer resources distribute to above-mentioned direct access communication channel, example Such as, all physical layer resources can be used to the communication of above-mentioned direct access communication channel by second terminal.Wherein, the hardware of terminal Configuration corresponds to corresponding frequency range, and certain frequency range and time domain and its flexible configuration correspond to corresponding physical layer resources.Here Physical layer resources have allocation optimum and general configuration, that is to say, that the corresponding physical layer resources of UE are divided into quality.Work as Cellular Networks In the absence of network, terminal can be that above-mentioned wireless channel preferentially selects optimal scheme physical layer resources.

First terminal sends inquiry instruction to the corresponding base station of cellular network, such as obtains the reply of base station, then can determine certainly It is in in the coverage area of the cellular network of normal operation;As do not obtained base station reply, then the honeycomb of normal operation is not at In network coverage.Preferably, it can be static that serving BS, which is the mode of radio channel allocation physical layer resources, namely Serving BS can be that above-mentioned direct access communication channel distributes fixed physical layer resources, that is, when will fix frequency point and/or fix The physical layer resources of gap distribute to wireless channel;Alternatively, the mode that serving BS is radio channel allocation physical layer resources may be used also Be dynamic namely serving BS can according to dispatch situation and/or resource service condition etc., be above-mentioned direct communication nothing Line channel distribution physical layer resources.

Preferably, it may include following that serving BS dynamic, which is the mode that above-mentioned direct access communication channel distributes physical layer resources, At least one mode:Remaining physical layer resources are distributed to wireless channel by serving BS;Serving BS provides all physical layers Source is according to preset pro rate to cellular network and wireless channel;Serving BS according to wireless channel flow demand allotment Layer resource is managed to wireless channel;Serving BS distributes physical layer resources to wireless channel according to preset algorithm.

Preferably, the communication for the ease of first terminal and second terminal is more convenient, can in advance will be above-mentioned straight The wireless channel for connecting letter is divided into special uplink channel(PDUCH)And downlink dedicated channels(PDDCH).In this way, First terminal can use special uplink channel or downlink respectively in communication process with second terminal according to the mode of agreement Dedicated channel is communicated, to generate contradiction.

Preferably, the physical layer resources for being radio channel allocation may include time slot, frequency spectrum resource, and by time, frequency The combined resource of arbitrary the two between rate and space three, the also referred to as resource of the types such as time-frequency combined resource.When therein Gap resource mainly considers that time shaft, frequency spectrum resource mainly consider that frequency axis, time-frequency combined resource consider the group of time and frequency etc. Joint source.

Corresponding to above-mentioned another direct access communication channel method for building up, additionally provide in the present embodiment another directly logical Letter channel establishes device, is located in second terminal, which has carried out for realizing above-described embodiment and preferred embodiment Cross repeating no more for explanation.As used below, the software of predetermined function and/or the group of hardware may be implemented in term " module " It closes.Although device described in following embodiment is preferably realized with software, the combination of hardware or software and hardware Realization be also that may and be contemplated.

Fig. 5 is the structure diagram that another direct access communication channel according to the ... of the embodiment of the present invention establishes device, such as Fig. 5 institutes Show, which includes:Second receiving module 52, third sending module 54 and second establish module 56, below to modules into Row is described in detail.

Second receiving module 52, the first request sent for receiving first terminal, wherein the first request is for asking Second terminal carries out direct communication with first terminal;Third sending module 54 is connected with the second receiving module 52, is used for first Terminal is sent for confirming the instruction for carrying out direct communication;Second establishes module 56, is connected with third sending module 54, for building Found the wireless channel for direct communication between first terminal and second terminal.

The present embodiment receives another end in preset range by above-mentioned module, second terminal in the second receiving module 52 End(First terminal as escribed above)Carry out the request of direct communication(I.e. above-mentioned first request)Afterwards, pass through third sending module 54 It is sent to the first terminal and confirms the instruction for carrying out direct communication, then first terminal and second terminal establish module by second Wireless channel is directly established between 56, there is no the relaying controls by core net even base station for the mode of establishing of this channel System, even if in the case where being covered there is no cellular network, remain able to establish direct access communication channel, solve related skill The problems of the channel that direct communication is established by window machine controller in art, improve direct communication flexibility and can By property.

Fig. 6 is the preferred structure block diagram that another direct access communication channel according to the ... of the embodiment of the present invention establishes device, such as Fig. 6 Shown, which can also include:

Second judgment module 62 establishes module 56 with second and is connected, for judging whether itself is in the bee of normal operation In the coverage area of nest network;4th sending module 64 is connected with the second judgment module 62, in the second judgment module 62 Judging result is to send the second request to serving BS in the case of being, wherein the second request is nothing for asking serving BS Line channel distribution physical layer resources;Second distribution module 66 is connected with the second judgment module 62, in the second judgment module 62 Judging result be no in the case of, the corresponding all or part of physical layer resources of second terminal selection hardware configuration distribute to nothing Line channel.

In the present embodiment, a kind of direct communication is additionally provided(D2D)Channel establishes system, and Fig. 7 is according to of the invention real The direct access communication channel for applying example establishes the structure diagram of system, as shown in fig. 7, the system include as shown in figures 2 and 3 be located at the Direct access communication channel in one terminal 20 establishes device(It is illustrated by taking Fig. 2 as an example in the figure 7), further include as shown in Fig. 5 or 6 Be located at second terminal 50 in direct access communication channel establish device(It is illustrated by taking Fig. 5 as an example in the figure 7).

It is illustrated with reference to preferred embodiment, preferred embodiment below combines above-described embodiment and its preferred implementation Mode.

In preferred embodiment below, a kind of dedicated channel and its implementation of terminal direct communication are provided, especially Be in wireless communications channel resource allocation when realize equipment room direct communication dedicated channel allocation method and apparatus.Pass through The dedicated channel of equipment room direct communication, and the device and method of application this dedicated channel realization equipment room direct communication.To Solves the problems, such as the channel resource allocation of direct communication between UE.

In preferred embodiment below, the dedicated channel of straight-forward network can be established first, including special uplink channel and Downlink dedicated channels.Straight-forward network applies the dedicated channel of straight-forward network to send and receive information in the communications.

Then, if there are cellular network coverings in communication, can object be dispatched by system side when straight-forward network is run The channel that layer resource is managed to straight-forward network uses;If cellular network covering is not present in communication, can directly apply straight-through The dedicated channel of network sends and receives information.

Embodiment one

Fig. 8 be according to embodiments of the present invention one cellular network operation when network diagram, as shown in figure 8, UE1 and Cellular network is respectively constituted between eNB, UE2 and eNB;UE1 and UE2 constitutes straight-forward network, can directly carry out between each other straight Believe all.Packet domain core network(Evolved Packet Core, referred to as EPC)For core net.ENB and EPC is referred to as system Side.The present embodiment is illustrated under the premise of cellular network keeps normal communication for progress by operating in for straight-forward network.

Straight-forward network applies the dedicated channel of straight-forward network to send and receive information in the communications.The special letter of straight-forward network Road, including straight-forward network special uplink channel(PDUCH)With straight-forward network downlink dedicated channels(PDDCH).The flow of foundation can Think:

Discovery procedure(It can be realized by 22 and/or second receiving module 52 of above-mentioned first sending module):UE is searched for and is sought The UE equipment of direct communication can nearby be carried out by looking for;Or receive the request of the direct communication to be established of other UE transmissions.

Confirmation process(It can be realized by above-mentioned first receiving module 24 and/or third sending module 54):UE has found straight-through Communication object confirms direct communication requirement.

After UE confirms that direct communication requires, since cellular network keeps normal communication, UE that can be sent out to eNB directly Logical communication request(The second request i.e. above).

ENB is that straight-forward network distributes physical layer resources:After eNB receives the request of UE, to lead directly to special uplink channel (PDUCH)With straight-through downlink dedicated channels(PDDCH)Distribute physical layer resources.

Wherein, above-mentioned distribution physical layer resources can carry out as follows:

Mode one:Dedicated fixed frequency spectrum and time slot are distributed for direct channel.This method is suitable for cellular network In the case that communication flows is relatively more fixed or flow is smaller.At this moment the physical layer resources that PUSCH and PDSCH is occupied are relatively Few, eNB can distribute more fixed physical layer resources and be used for direct communication.

Mode two:According to dispatch situation and resource service condition, dynamically physical layer resources are distributed for straight-forward network.Dynamically It, can be by remaining physical layer resource allocation to straight-forward network there are many ways to distribution;If surplus resources are very little, then take and honeycomb Network mean allocation or the principle distributed according to a certain percentage;Or distribute resource according to the flow demand of straight-forward network; Certain algorithm can also be used to distribute.

Straight-through process:Under time slot and spectrum conditions that UE is distributed in eNB, direct communication is carried out with other corresponding UE, That is, the physical layer resources of UE applications eNB distribution, establish straight-forward network, by leading directly to special uplink channel(PDUCH)Under straight-through Row dedicated channel(PDDCH)Carry out direct communication.

Embodiment two

Fig. 9 is straight-forward network schematic diagram when according to embodiments of the present invention two cellular network is not run, as shown in figure 9, UE1 and eNB, respectively constitutes cellular network between UE2 and eNB;UE1 and UE2 constitute straight-forward network, between each other can directly into Row direct communication.Packet domain core network(Evolved Packet Core, referred to as EPC)For core net.ENB and EPC is referred to as system System side.When the present embodiment is run with straight-forward network, cellular network communication is not present or is unable to normal communication(In normal communication It is disconnected)(It is represented by dashed line in figure)Under the premise of carry out for illustrate.

The flow of foundation can be:

Discovery procedure(It can be realized by 22 and/or second receiving module 52 of above-mentioned first sending module):UE is searched for and is sought The UE equipment of direct communication can nearby be carried out by looking for.Or receive the request of the direct communication to be established of other UE transmissions.

Confirmation process(It can be realized by above-mentioned first receiving module 24 and/or third sending module 54):UE has found direct After communication object, confirmation request is sent out to direct communication object according to the demand of itself, until receiving the confirmation request of other side;Or Person UE directly confirms the direct communication request of other side UE.In cellular network, there is no no longer need to specific assigned physics in this case Layer resource, UE can direct application specific channel and existing all physical layer resources.The hardware configuration of UE corresponds to corresponding frequency Section, certain frequency range correspond to corresponding physical layer resources.Here physical layer resources have allocation optimum and general configuration, that is, Say that the corresponding physical layer resources of UE are divided into quality.UE can be that dedicated channel preferentially selects to distribute in the absence of cellular network Optimal physical layer resource.

Straight-through process:By leading directly to dedicated channel, including straight-through special uplink channel between UE(PDUCH)With straight-through downlink Dedicated channel(PDDCH)It carries out uplink and downlink and leads directly to information transmission.

Embodiment three

Figure 10 is the method flow diagram of according to embodiments of the present invention three direct communication, and as shown in Figure 10, this method includes Following steps:

Step S1002(Discovery procedure), find other UE, or receive the direct communication request of other UE.

Step S1004(Confirmation process), confirm direct communication, distribute physical layer resources by eNB or use dedicated letter The corresponding physical layer resources in road.

Step S1006(Straight-through process), the corresponding physical layer resources progress direct communication of application specific channel.

In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality Apply the technical solution described in example.

In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should Storage medium includes but not limited to CD, floppy disk, hard disk, scratch pad memory etc..

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (14)

1. a kind of direct communication D2D channel establishing methods, which is characterized in that including:
First terminal sends the first request that direct communication is carried out with the second terminal to second terminal;
The first terminal receives the second terminal and confirms the instruction for carrying out direct communication, and establishes for described first eventually The wireless channel of direct communication between end and the second terminal;
Wherein, the first terminal is established after the channel for being used for the first terminal and the second terminal direct communication, institute State first terminal judge itself whether in normal operation cellular network coverage area in;If so, the first terminal The second request is sent to serving BS, wherein second request is for asking the serving BS for the wireless channel point With physical layer resources;If not, the first terminal selects the corresponding all or part of physical layer resources of hardware configuration to distribute to The wireless channel.
2. according to the method described in claim 1, it is characterized in that, the serving BS is object described in the radio channel allocation Managing layer resource includes:
The serving BS is the fixed physical layer resources of the radio channel allocation;Alternatively,
The serving BS is the radio channel allocation physical layer resources according to dispatch situation and/or resource service condition.
3. according to the method described in claim 2, it is characterized in that, the serving BS makes according to dispatch situation and/or resource Include at least one of for the mode of the radio channel allocation physical layer resources with situation:
Remaining physical layer resources are distributed to the wireless channel by the serving BS;
The serving BS is by all physical layer resources according to preset pro rate to cellular network and the wireless channel;
The serving BS gives the wireless channel according to the flow demand distribution physical layer resources of the wireless channel;
The serving BS gives the wireless channel according to preset algorithm distribution physical layer resources.
4. according to the method in any one of claims 1 to 3, which is characterized in that the wireless channel includes:
Special uplink channel and downlink dedicated channels.
5. according to the method in any one of claims 1 to 3, which is characterized in that the physical layer resources include below extremely It is one of few:Time interval resource, frequency spectrum resource, time-frequency combined resource.
6. a kind of direct communication D2D channel establishing methods, which is characterized in that including:
Second terminal receives the first request that first terminal is sent, wherein first request is for asking second end End carries out direct communication with the first terminal;
The second terminal is sent to the first terminal for confirming the instruction for carrying out direct communication, and is established and be used for described the The wireless channel of direct communication between one terminal and the second terminal;
Wherein, the second terminal establish for the first terminal and the second terminal direct communication wireless channel it Afterwards, the second terminal judge itself whether in normal operation cellular network coverage area in;If so, described second Terminal sends the second request to serving BS, wherein second request is the wireless communication for asking the serving BS Road distributes physical layer resources;If not, the second terminal selects the corresponding all or part of physical layer resources point of hardware configuration Wireless channel described in dispensing.
7. according to the method described in claim 6, it is characterized in that, the serving BS is object described in the radio channel allocation Managing layer resource includes:
The serving BS is the fixed physical layer resources of the radio channel allocation;Alternatively,
The serving BS is the radio channel allocation physical layer resources according to dispatch situation and/or resource service condition.
8. the method according to the description of claim 7 is characterized in that the serving BS makes according to dispatch situation and/or resource Include at least one of for the mode of the radio channel allocation physical layer resources with situation:
Remaining physical layer resources are distributed to the wireless channel by the serving BS;
The serving BS is by all physical layer resources according to preset pro rate to cellular network and the wireless channel;
The serving BS gives the wireless channel according to the flow demand distribution physical layer resources of the wireless channel;
The serving BS gives the wireless channel according to preset algorithm distribution physical layer resources.
9. the method according to any one of claim 6 to 8, which is characterized in that the wireless channel includes:
Special uplink channel and downlink dedicated channels.
10. the method according to any one of claim 6 to 8, which is characterized in that the physical layer resources include below extremely It is one of few:Time interval resource, frequency spectrum resource, time-frequency combined resource.
11. according to the method described in claim 9, it is characterized in that, the physical layer resources include at least one of:Time slot Resource, frequency spectrum resource, time-frequency combined resource.
12. a kind of direct communication D2D channels establish device, it is located in first terminal, which is characterized in that including:
First sending module, for sending the first request for carrying out direct communication with the second terminal to second terminal;
First receiving module confirms the instruction of progress direct communication for receiving the second terminal;
First establishes module, for establishing the wireless communication for direct communication between the first terminal and the second terminal Road;
First judgment module, for judge itself whether in normal operation cellular network coverage area in;
Second sending module, in the case where the judging result of first judgment module is to be, being sent to serving BS Second request, wherein second request is the radio channel allocation physical layer resources for asking the serving BS;
First distribution module, in the case where the judging result of first judgment module is no, selecting hardware configuration pair The all or part of physical layer resources answered distribute to the wireless channel.
13. a kind of direct communication D2D channels establish device, it is located in second terminal, which is characterized in that including:
Second receiving module, the first request sent for receiving first terminal, wherein first request is for asking It states second terminal and carries out direct communication with the first terminal;
Third sending module, for being sent to the first terminal for confirming the instruction for carrying out direct communication;
Second establishes module, for establishing the wireless communication for direct communication between the first terminal and the second terminal Road;
Second judgment module, for judge itself whether in normal operation cellular network coverage area in;
4th sending module, in the case where the judging result of second judgment module is to be, being sent to serving BS Second request, wherein second request is the radio channel allocation physical layer resources for asking the serving BS;
Second distribution module, in the case where the judging result of second judgment module is no, the second terminal to be selected It selects the corresponding all or part of physical layer resources of hardware configuration and distributes to the wireless channel.
14. a kind of direct communication D2D channels establish system, including are located at as claimed in claim 12 direct in first terminal Communication channel establishes device, further includes that the direct access communication channel as claimed in claim 13 in second terminal establishes dress It sets.
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