CN105430751A - Device to Device (D2D) resource distribution method of Internet of Vehicles terminal and related device - Google Patents
Device to Device (D2D) resource distribution method of Internet of Vehicles terminal and related device Download PDFInfo
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Abstract
The invention discloses a Device to Device (D2D) resource distribution method of an Internet of Vehicles terminal and a related device which are used to achieve D2D resource distribution of a terminal in an Internet of Vehicles system and improve use efficiency of a wireless resource, resource distribution efficiency and resource updating efficiency. The method comprises the following steps: a D2D resource control entity receives a first signal sent by a terminal through a base station, wherein the first signal at least carries position information of the terminal; and, according to the position information of the terminal and locally saved D2D resource occupied information, the D2D resource control entity allocates an idle D2D resource for the terminal and sends indication information of the allocated D2D resource to the terminal through the base station, wherein the D2D resource occupied information comprises the position information of the terminal of the allocated D2D resource and occupied D2D resource information thereof.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of device-to-device (DevicetoDevice, D2D) resource allocation methods and relevant device of car networked terminals.
Background technology
The car connected network communication system of vehicle active safety is the information obtaining vehicle and road based on wireless communication technology, by car car, bus or train route information interaction and sharing realize between vehicle and infrastructure intelligent coordinated with coordinate, reach Optimum utilization system resource, improve traffic safety, alleviate the object of traffic congestion.
The car connected network communication system of vehicle active safety has higher requirement to communication delay, therefore generally all adopts the self-organization network technology of short-range communication.At present at car networking arenas, according to the form that Radio Resource uses, mainly contain two class self-organization network technologies, a kind of is special short-distance wireless communication (DSRC) technology based on IEEE802.11p, and this is the self-organizing network of asynchronous communication; The synchronous communication self-organizing network that another kind is is representative with mobile CDMA slotted ALOHA (MS-ALOHA).
In self-organizing network, each terminal all needs to communicate, but the strange mutually and dynamic change of each terminal, be ensure fail safe, all need to comprise no small security information data in each data that each terminal sends; Also the information such as sending time slots takies are needed for adopting MS-ALOHA self-organizing system machine-processed like this.These all decrease the traffic volume of useful load data, affect very much the efficiency of communication link, are also unfavorable for the expansion of communication function.
In cell mobile communication systems, terminal transmits and receive data all under the control of a network, by grid distributing radio resource, and by network delivery data.For meeting specific communication requirement, 3GPP has also carried out discussion and the research of device-to-device (DevicetoDevice, D2D) communication service.
3GPPD2D technology comprises close to service discovery (D2DDiscovery) with close to the large class function of communication for service (D2DCommunication) two.As shown in Figure 1, two kinds of Linktypes can be defined: D2D link: refer to the link directly carrying out between equipment and equipment communicating; Equipment is to network (D2N) link: carry out the link communicated between equipment and network node.The terminal participating in D2DDiscovery/Communication is divided into two kinds of roles: D2D transmitting terminal: the terminal namely sending D2DDiscovery/Communication message; D2D receiving terminal: the terminal namely receiving the D2DDiscovery/Communication message that D2D transmitting terminal sends.
For 3GPPD2D technology, mainly utilize distributed frequency spectrum band in part, a small amount of terminal can activate D2D business, and the terminal of car networking all needs to distribute frequency spectrum resource, the characteristic of 3GPPD2D technology is different from the demand of car working application, and therefore in vehicle network communication system, the allocation of radio resources mode of terminal directly cannot use for reference the allocation of radio resources mode of terminal in 3GPPD2D technology.
Visible, need to seek a kind of terminal resource distribution method for car connected network communication system.
Summary of the invention
The embodiment of the present invention provides a kind of D2D resource allocation methods and relevant device of car networked terminals, in order to realize the D2D Resourse Distribute of terminal in car networked system, improves the service efficiency of Radio Resource, improves the efficiency of Resourse Distribute and renewal.
The concrete technical scheme that the embodiment of the present invention provides is as follows:
First aspect, provides a kind of device-to-device D2D resource allocation methods of car networked terminals, comprising:
The first signal that D2D resource control entity receiving terminal is sent by base station, at least carries the positional information of described terminal in described first signal;
Described D2D resource control entity is according to the positional information of described terminal and local D2D resource occupation information of preserving, for the described terminal distribution free time D2D resource and the indication information of described D2D resource distributed is sent to described terminal by described base station, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, described D2D resource control entity is described terminal distribution D2D resource and after the indication information of described D2D resource distributed is sent to described terminal by described base station, described method also comprises:
Described D2D resource control entity receives the secondary signal that described terminal is sent by described base station, and described secondary signal comprises the indication information of time interval resource collision accident;
Described D2D resource control entity, according to the positional information of described terminal and described D2D resource occupation information, is the D2D resource that described terminal distribution is new, and the indication information of described new D2D resource is sent to described terminal by described base station.
Preferably, the first signal that described D2D resource control entity receiving terminal is sent by base station, comprising:
It take preset duration as described first signal sent by described base station in the cycle that described D2D resource control entity receives described terminal.
Preferably, described D2D resource control entity also comprises after receiving described first signal:
Described D2D resource control entity is preserved or is upgraded the positional information of described terminal in described D2D resource occupation information;
Described D2D resource control entity is after described terminal distribution D2D resource, also comprises:
Described D2D resource control entity is preserved or is upgraded the D2D resource occupation information of described terminal in described D2D resource occupation information.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal;
Described D2D resource control entity is described terminal distribution D2D resource and before the indication information of described D2D resource distributed is sent to described terminal by described base station, described method also comprises:
Described D2D resource control entity is greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot;
Described D2D resource control entity, according to the positional information of described terminal and local D2D resource occupation information of preserving, is the D2D resource of described terminal distribution free time, comprises:
Described D2D resource control entity is according to the positional information of described terminal and local D2D resource occupation information of preserving, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
Preferably, described D2D resource control entity, according to the positional information of described terminal and D2D resource occupation information, is described terminal distribution D2D resource, comprises:
Described D2D resource control entity, according to the positional information of described terminal and local D2D resource occupation information of preserving, is determined that the distance with described terminal is less than the adjacent terminal end of set point, and is obtained the D2D resource occupation information of described adjacent terminal end;
According to the D2D resource occupation information of described adjacent terminal end, for described terminal distribution is different from the D2D resource that described adjacent terminal end takies, idle D2D resource.
Second aspect, provides a kind of device-to-device D2D resource allocation methods of car networked terminals, comprising:
Terminal sends the first signal to D2D resource control entity by base station, at least comprises the positional information of described terminal in described first signal;
Described terminal receives the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, after described terminal receives the indication information of the D2D resource that described D2D resource control entity is sent by described base station, described method also comprises:
After described terminal detects time interval resource collision accident, secondary signal is sent to described D2D resource control entity by described base station, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
Described terminal receives the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
Preferably, described terminal sends the first signal to D2D resource control entity by base station, comprising:
Described terminal is the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
The third aspect, provides a kind of device-to-device D2D resource control entity equipment, comprising:
Receiver module, for the first signal that receiving terminal is sent by base station, at least carries the positional information of described terminal in described first signal;
Processing module, for the D2D resource occupation information of preserving according to positional information and this locality of described terminal, for the described terminal distribution free time D2D resource and the indication information of described D2D resource distributed is sent to described terminal by described base station, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, described receiver module also for:
Receive the secondary signal that described terminal is sent by described base station, described secondary signal comprises the indication information of time interval resource collision accident;
Described processing module also for:
According to positional information and the described D2D resource occupation information of described terminal, be the D2D resource that described terminal distribution is new, and the indication information of described new D2D resource is sent to described terminal by described base station.
Preferably, described receiver module specifically for:
Receiving described terminal take preset duration as described first signal sent by described base station in the cycle.
Preferably, described processing module also for:
In described D2D resource occupation information, preserve or upgrade the positional information of described terminal; And after for described terminal distribution D2D resource, in described D2D resource occupation information, preserve or upgrade the D2D resource occupation information of described terminal.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal;
Described processing module specifically for:
Before sending to described terminal for described terminal distribution D2D resource and by the indication information of the described D2D resource of distributing by described base station, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot; According to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
Preferably, described processing module specifically for:
According to positional information and the local D2D resource occupation information of preserving of described terminal, determine that the distance with described terminal is less than the adjacent terminal end of set point, and obtain the D2D resource occupation information of described adjacent terminal end;
According to the D2D resource occupation information of described adjacent terminal end, for described terminal distribution is different from the D2D resource that described adjacent terminal end takies, idle D2D resource.
Fourth aspect, provides a kind of terminal, comprising:
Sending module, for being sent the first signal by base station to D2D resource control entity, at least comprises the positional information of described terminal in described first signal;
Receiver module, for receiving the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, also comprise detection module, for detecting the whether generation time slot collision event of the D2D resource of described terminal;
Described sending module also for:
After described detection module detects time interval resource collision accident, secondary signal is sent to described D2D resource control entity by described base station, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
Described receiver module also for:
Receive the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
Preferably, described sending module specifically for:
Be the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
Based on technique scheme, in the embodiment of the present invention, at network side, D2D resource control entity is set, the positional information of having distributed the terminal of D2D resource and the D2D resource information taken thereof is managed by this D2D resource control entity, D2D resource control entity is by the positional information of base station receiving terminal, according to the positional information of this terminal, and distributed the positional information of terminal of D2D resource and the D2D resource information that takies thereof, for the D2D resource of this terminal distribution free time, thus ensure that the efficiency of Resourse Distribute and renewal, and improve the service efficiency of Radio Resource.
Accompanying drawing explanation
Fig. 1 is existing 3GPPD2D discovery/communication scheme;
Fig. 2 is the system architecture schematic diagram utilizing cellular network to carry out D2D Resourse Distribute in the embodiment of the present invention;
Fig. 3 is D2D resource control entity overlay area schematic diagram in the embodiment of the present invention;
Fig. 4 is that in the embodiment of the present invention, D2D resource control entity is the process schematic that car networked terminals distributes D2D resource;
Fig. 5 is that in the embodiment of the present invention, terminal request D2D resource control entity is that it distributes the process schematic of D2D resource;
Fig. 6 is the structural representation of D2D resource control entity equipment in the embodiment of the present invention;
Fig. 7 is the structural representation of another D2D resource control entity equipment in the embodiment of the present invention;
Fig. 8 is terminal structure schematic diagram in the embodiment of the present invention;
Fig. 9 is another terminal structure schematic diagram in the embodiment of the present invention.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, and obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
For this scene of D2D Resourse Distribute of car networked terminals, the D2D resource allocation methods utilizing cellular network is proposed in the embodiment of the present invention, as shown in Figure 2, D2N link is wireless communication link conventional in cellular network, first terminal sets up D2N link with system, the D2D resource of distribution is sent to terminal by D2N link by system, and the D2D resource by distributing between each terminal sets up D2D link, by the direct communication of D2D link.
Core concept of the present invention is: arrange D2D resource control entity at network side, passed through the D2D resource occupation information of each terminal of Resources allocation in all communities in the wireless link acquisition control area of cellular network by this D2D resource control entity, this D2D resource occupation information comprises the indication information of the positional information of the terminal of Resources allocation and the D2D resource shared by this terminal.
Wherein, this D2D resource control entity can be arranged in identical network element with base station, also can be arranged in other network element on upper strata, base station, or at the independent network element of network settings as D2D resource control entity.If D2D resource control entity and base station are arranged in identical network element, then D2D resource control entity is base station; If D2D resource control entity is arranged in the network element on upper strata, base station, the forwarding of message, as the intermediate node of D2D resource control entity and terminal, is responsible in base station.
D2D resource control entity can obtain the D2D resource occupation information of Zhong Ge community, its control area by base station.
Wherein, the quantity of the community of D2D resource control entity control area covering is for presetting.Particularly, can determine according to many factors such as the D2D transmitted power designs of the demand of the capacity of Cellular Networks community, D2D resource, terminal.Such as, as shown in Figure 3, the region of a D2D resource control entity covering is preset as the region of 7 communities compositions, wherein arrange in 6 communities centered by a remaining community, these 7 communities belong to three base stations (eNB), and in Fig. 3, each broken circle represents the region that a D2D resource control entity covers.
In following embodiment, idle D2D resource comprises unappropriated D2D resource, and distributed to other terminal but can be multiplexing D2D resource.
Based on this principle, in the embodiment of the present invention, as shown in Figure 4, to be that car networked terminals distributes the method detailed flow process of D2D resource as follows for D2D resource control entity:
The first signal that step 401:D2D resource control entity receiving terminal is sent by base station, at least carries the positional information of described terminal in this first signal.
In the embodiment of the present invention, the mode terminal not being obtained to the positional information of self limits, all be applicable to the present invention for the mode that can obtain own location information, such as, terminal uses the modes such as global positioning system (GPS) to obtain positional information accurately.
Preferably, D2D resource control entity receiving terminal take preset duration as the first signal sent by base station in the cycle, with the positional information making D2D resource control entity obtain the terminal in control area in time.In concrete enforcement, can also the information such as service condition (such as D2D communication quality) of D2D resource of carried terminal in the first signal of terminal to report.
In a specific embodiment, base station carries out semi-continuous scheduling at medium education (MAC) layer to terminal, to realize with preset duration being the positional information cycle obtaining terminal, which can reduce the expense of Physical Downlink Control Channel (PDCCH) channel of D2N link.
Preferably, after D2D resource control entity receives the first signal, preserve in D2D resource occupation information or the positional information of more new terminal.
In concrete enforcement, after starting up of terminal, before sending the first signal by base station, this terminal needs first to set up wireless heterogeneous networks (RRC) with network side and is connected, and is this terminal distribution D2N link private resource by network side.In cellular cell planning and D2D resource control entity overlay area planning process, the parameter of configuration-system, comprises the parameter such as multiplex distance of the transmitting power of terminal D 2D link, D2D link circuit resource.
Step 402:D2D resource control entity is according to the positional information of this terminal and local D2D resource occupation information of preserving, for this terminal distribution free time D2D resource and the indication information of the D2D resource of distribution is sent to this terminal by base station, the positional information that this D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, D2D resource control entity is after terminal distribution D2D resource, and D2D resource control entity is preserved or the D2D resource occupation information of more new terminal in D2D resource occupation information.
Preferably, after for this terminal distribution D2D resource, whether this D2D resource of this terminal Real-Time Monitoring there is time slot collision event, and when monitoring time slot collision event, send secondary signal by base station to D2D resource control entity, in this secondary signal, carry the indication information of time interval resource collision accident.
Correspondingly, the secondary signal that D2D resource control entity receiving terminal is sent by base station, according to positional information and the D2D resource occupation information of this terminal, be the D2D resource that this terminal distribution is new, and the indication information of this new D2D resource is sent to this terminal by base station.
In the embodiment of the present invention, D2D link circuit resource is without the need to the resource binding with D2N link, and D2N link switching can not trigger redistributing of D2D link circuit resource, D2D link circuit resource redistribute the switching that also can not trigger D2N link.Wherein, D2N link switching is identical with the link switching process in cellular network, and namely when the signal quality of the adjacent cell of community, terminal current place is better than this current area, the D2N link switching of triggering terminal is to this adjacent cell.
Such as, when fast mobile terminal goes out current area and D2N link switching occurs, if D2D resource timeslot collision accident does not occur this terminal, then therefore do not redistribute the D2D resource of this terminal; Fast mobile terminal goes out the management area of current D2D resource control entity, if D2D resource timeslot collision accident does not occur this terminal, does not then therefore redistribute the D2D resource of this terminal.
Preferably, the reception quality information of the D2D resource timeslot of carried terminal position is gone back in the first signal;
Before D2D resource control entity is terminal distribution D2D resource, the time slot of set point is greater than according to the reception quality information determination interference signal intensity of D2D resource timeslot, wherein, interference signal intensity is larger, the quality of reception of this time slot is poorer, interference signal intensity is less, and the quality of reception of this time slot is more excellent, and time slot interference signal intensity being greater than set point is herein defined as the time slot do not met the demands;
D2D resource control entity is according to the positional information of terminal and local D2D resource occupation information of preserving, select idle D2D resource, and determine that the time slot of the D2D resource selected is different from the time slot that the interference signal intensity determined is greater than set point, by the D2D Resourse Distribute of selection to terminal.
This is preferably in execution mode, if determine, the time slot of the D2D resource selected is identical with the time slot that the interference signal intensity determined is greater than set point, then reselect idle D2D resource, until determine time slot and the interference signal intensity determined of the D2D resource selected be greater than the time slot of set point different after, by the D2D Resourse Distribute of selection to terminal.
In a concrete enforcement, D2D resource control entity, according to the positional information of terminal and local D2D resource occupation information of preserving, is determined that the distance with this terminal is less than the adjacent terminal end of set point, and is obtained the D2D resource occupation information of this adjacent terminal end; According to the D2D resource occupation information of this adjacent terminal end, it is this terminal distribution D2D resource.
Particularly, the idle D2D resource that the D2D resource taken for terminal distribution and adjacent terminal end is different.
Wherein, the distance with this terminal is exceeded the D2D resource shared by other terminal of set point, for can by the D2D resource of this terminal multiplexing.
Based on same inventive concept, as shown in Figure 5, terminal request D2D resource control entity is that the method detailed flow process that it distributes D2D resource is as follows:
Step 501: terminal sends the first signal to D2D resource control entity by base station, at least comprises the positional information of this terminal in this first signal.
Preferably, terminal is the cycle send the first signal to D2D resource control entity by base station with preset duration.In a specific embodiment, base station carries out semi-continuous scheduling in MAC layer to terminal, and to realize taking preset duration as the positional information cycle obtaining terminal, which can reduce the expense of Physical Downlink Control Channel (PDCCH) channel of D2N link.
In concrete enforcement, after starting up of terminal, before sending the first signal by base station, this terminal needs first to set up wireless heterogeneous networks (RRC) with network side and is connected, and is this terminal distribution D2N link private resource by network side.In cellular cell planning and D2D resource control entity overlay area planning process, the parameter of configuration-system, comprises the parameter such as multiplex distance of the transmitting power of terminal D 2D link, D2D link circuit resource.
Step 502: terminal receives the indication information of the D2D resource that D2D resource control entity is sent by base station, the indication information of this D2D resource is sent for after this terminal distribution D2D resource by the D2D resource occupation information of D2D resource control entity according to the positional information of this terminal and local preservation, the positional information that this D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, after terminal receives the indication information of the D2D resource that D2D resource control entity is sent by base station, implement this D2D resource of monitoring and whether there is time interval resource collision accident;
After this terminal detects time interval resource collision accident, send secondary signal by base station to D2D resource control entity, in this secondary signal, carry the indication information of time interval resource collision accident; By D2D resource control entity according to the positional information of this terminal and D2D resource occupation information, it is the new D2D resource of this terminal distribution free time;
Terminal receives the indication information of this new D2D resource that D2D resource control entity is sent by base station.
Preferably, the reception quality information of the D2D resource timeslot of terminal position is also carried in the first signal.
D2D resource control entity is before for this terminal distribution D2D resource, the time slot of set point is greater than according to the reception quality information determination interference signal intensity of this D2D resource timeslot, according to positional information and the local D2D resource occupation information of preserving of terminal, select idle D2D resource, if determine, the time slot of this D2D resource selected is different from the time slot that this interference signal intensity determined is greater than set point, gives this terminal by this D2D Resourse Distribute of selection.
If determine, the time slot of this D2D resource selected is identical with the time slot that the interference signal intensity determined is greater than set point, reselect idle D2D resource, until the time slot of this D2D resource reselected and this interference signal intensity determined be greater than the time slot of set point different time, by this D2D Resourse Distribute of reselecting to this terminal.
Based on same inventive concept, a kind of D2D resource control entity equipment is additionally provided in the embodiment of the present invention, the concrete enforcement of this D2D resource control entity equipment can see in said method embodiment about the description of D2D resource control entity, repetition part repeats no more, as shown in Figure 6, this D2D resource control entity equipment mainly comprises:
Receiver module 601, for the first signal that receiving terminal is sent by base station, at least carries the positional information of described terminal in this first signal;
Processing module 602, for the D2D resource occupation information of preserving according to positional information and this locality of this terminal, for this terminal distribution free time D2D resource and the indication information of the D2D resource of distribution is sent to this terminal by base station, the positional information that D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, receiver module 601 also for:
The secondary signal that receiving terminal is sent by base station, this secondary signal comprises the indication information of time interval resource collision accident;
Processing module 602 also for:
According to positional information and the D2D resource occupation information of terminal, be the D2D resource that this terminal distribution is new, and the indication information of this new D2D resource is sent to this terminal by base station.
Preferably, receiver module 601 specifically for:
Receiving terminal take preset duration as the first signal sent by base station in the cycle.
Preferably, processing module 602 also for:
Preserve in D2D resource occupation information or the positional information of more new terminal; And after for terminal distribution D2D resource, in D2D resource occupation information, preserve or upgrade the D2D resource occupation information of this terminal.
Preferably, the reception quality information of the D2D resource timeslot of carried terminal position is gone back in the first signal;
Processing module 602 specifically for:
Before sending to this terminal for terminal distribution D2D resource and by the indication information of the D2D resource of distribution by base station, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of D2D resource timeslot; According to positional information and the local D2D resource occupation information of preserving of this terminal, select idle D2D resource, determine that the time slot of this D2D resource selected is different from the time slot that the interference signal intensity determined is greater than set point, give this terminal by this D2D Resourse Distribute of selection.
This is preferably in execution mode, if determine, the time slot of the D2D resource selected is identical with the time slot that the interference signal intensity determined is greater than set point, then reselect idle D2D resource, until determine time slot and the interference signal intensity determined of the D2D resource selected be greater than the time slot of set point different after, by the D2D Resourse Distribute of selection to terminal.
Specifically to implement for one, processing module 602 specifically for:
According to positional information and the local D2D resource occupation information of preserving of terminal, determine that the distance with this terminal is less than the adjacent terminal end of set point, and obtain the D2D resource occupation information of this adjacent terminal end;
According to the D2D resource occupation information of this adjacent terminal end, for this terminal distribution different from the D2D resource that described adjacent terminal end takies, D2D resource.
Based on same inventive concept, another kind of D2D resource control entity equipment is additionally provided in the embodiment of the present invention, the concrete enforcement of this D2D resource control entity equipment can see in said method embodiment about the description of D2D resource control entity, repetition part repeats no more, as shown in Figure 7, this D2D resource control entity equipment mainly comprises by the interconnective transceiver 701 of bus, processor 702 and memory 703, wherein, transceiver 701 is for reception under the control of processor 702 and send data, particularly:
Transceiver 701, for the first signal that receiving terminal is sent by base station, at least carries the positional information of described terminal in described first signal; And send to described terminal for the indication information of the described D2D resource of being distributed by processor 702 by described base station;
Processor 702, for reading the program in memory 703, performs following process:
According to positional information and the local D2D resource occupation information of preserving of described terminal, be the D2D resource of described terminal distribution free time, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, transceiver 701 is also for receiving the secondary signal that described terminal is sent by described base station, and described secondary signal comprises the indication information of time interval resource collision accident;
Processor 702 also for according to the positional information of described terminal and described D2D resource occupation information, is the D2D resource that described terminal distribution is new, and indicates transceiver 701 that the indication information of described new D2D resource is sent to described terminal by described base station.
Preferably, transceiver 701 receives described terminal take preset duration as described first signal sent by described base station in the cycle.
This is preferably in execution mode, and processor 702 also for preserving or upgrade the positional information of described terminal in described D2D resource occupation information; And after for described terminal distribution D2D resource, in described D2D resource occupation information, preserve or upgrade the D2D resource occupation information of described terminal.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in the first signal;
Processor 702 specifically for:
The time slot of set point is greater than according to the reception quality information determination interference signal intensity of described D2D resource timeslot; According to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
Preferably, processor 702 specifically for:
According to positional information and the local D2D resource occupation information of preserving of described terminal, determine that the distance with described terminal is less than the adjacent terminal end of set point, and obtain the D2D resource occupation information of described adjacent terminal end;
According to the D2D resource occupation information of described adjacent terminal end, for described terminal distribution different from the D2D resource that described adjacent terminal end takies, D2D resource.
Wherein, bus architecture can comprise interconnected bus and the bridge of any amount, and the various electrical chains of the memory of the one or more processor specifically represented by processor and memory representative are connected together.Other electrical chains various of such as ancillary equipment, pressurizer and management circuit etc. and so on can also be connected together by bus architecture, and these are all known in the field, therefore, are no longer described further it herein.Bus interface provides interface.Transceiver can be multiple element, namely comprises transmitter and transceiver, is provided for the unit communicated with other devices various over a transmission medium.Processor is in charge of bus architecture and common process, and memory can the data that use when executable operations of storage of processor.
Based on same inventive concept, additionally provide a kind of terminal in the embodiment of the present invention, the concrete enforcement of this terminal can see the description about terminal in said method embodiment, and repeat part and repeat no more, as shown in Figure 8, this terminal mainly comprises:
Sending module 801, for being sent the first signal by base station to D2D resource control entity, at least comprises the positional information of described terminal in described first signal;
Receiver module 802, for receiving the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, also comprise detection module 803, for detecting the whether generation time slot collision event of the D2D resource of described terminal;
Described sending module 801 also for:
After described detection module detects time interval resource collision accident, secondary signal is sent to described D2D resource control entity by described base station, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
Described receiver module 802 also for:
Receive the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
Preferably, described sending module 801 specifically for:
Be the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
Preferably, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
Based on same inventive concept, another kind of terminal is additionally provided in the embodiment of the present invention, the concrete enforcement of this terminal can see the description about terminal in said method embodiment, repetition part repeats no more, as shown in Figure 9, this terminal mainly comprises the processor 901, memory 902, the transceiver 903 that are connected by bus interface, wherein, processor 901, for reading the program in memory 902, performs following process:
Instruction transceiver 903 sends the first signal to D2D resource control entity by base station, at least comprises the positional information of described terminal in described first signal;
And instruction transceiver 903 receives the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
Preferably, processor 901 is also for detecting the whether generation time slot collision event of the D2D resource of described terminal;
And after time interval resource collision accident being detected, instruction transceiver 903 sends secondary signal by described base station to described D2D resource control entity, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
And instruction transceiver 903 receives the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
Preferably, transceiver 903 is the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
This is preferably in execution mode, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, described terminal is given by the described D2D Resourse Distribute of selection.
In the embodiment of the present invention, D2D resource control entity is according to the positional information of terminal, and D2D resource occupation information is the D2D resource of terminal distribution free time, by the D2D resource of each terminal in this D2D resource control entity concentrated controling management region, avoid the blindness of Stochastic choice time interval resource, can avoid occurring that in self-organizing network, each terminal selects the situation of resource contention, improves the allocative efficiency of D2D resource.
In the embodiment of the present invention, the resource utilizing the D2N link assignment D2D resource of cellular network can reduce security information field to take, improves the flexibility of system.The strategy redistributed carrying out D2D resource based on collision detection can reduce the code reassignment of unnecessary D2D resource.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (20)
1. a device-to-device D2D resource allocation methods for car networked terminals, is characterized in that, comprising:
The first signal that D2D resource control entity receiving terminal is sent by base station, at least carries the positional information of described terminal in described first signal;
Described D2D resource control entity is according to the positional information of described terminal and local D2D resource occupation information of preserving, for the described terminal distribution free time D2D resource and the indication information of described D2D resource distributed is sent to described terminal by described base station, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
2. the method for claim 1, is characterized in that, described D2D resource control entity is described terminal distribution D2D resource and after the indication information of described D2D resource distributed is sent to described terminal by described base station, described method also comprises:
Described D2D resource control entity receives the secondary signal that described terminal is sent by described base station, and described secondary signal comprises the indication information of time interval resource collision accident;
Described D2D resource control entity, according to the positional information of described terminal and described D2D resource occupation information, is the D2D resource that described terminal distribution is new, and the indication information of described new D2D resource is sent to described terminal by described base station.
3. the method for claim 1, is characterized in that, the first signal that described D2D resource control entity receiving terminal is sent by base station, comprising:
It take preset duration as described first signal sent by described base station in the cycle that described D2D resource control entity receives described terminal.
4. method as claimed in claim 3, is characterized in that, described D2D resource control entity also comprises after receiving described first signal:
Described D2D resource control entity is preserved or is upgraded the positional information of described terminal in described D2D resource occupation information;
Described D2D resource control entity is after described terminal distribution D2D resource, also comprises:
Described D2D resource control entity is preserved or is upgraded the D2D resource occupation information of described terminal in described D2D resource occupation information.
5. the method for claim 1, is characterized in that, also carries the reception quality information of the D2D resource timeslot of described terminal position in described first signal;
Described D2D resource control entity is described terminal distribution D2D resource and before the indication information of described D2D resource distributed is sent to described terminal by described base station, described method also comprises:
Described D2D resource control entity is greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot;
Described D2D resource control entity, according to the positional information of described terminal and local D2D resource occupation information of preserving, is the D2D resource of described terminal distribution free time, comprises:
Described D2D resource control entity is according to the positional information of described terminal and local D2D resource occupation information of preserving, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
6. the method as described in any one of claim 1-5, is characterized in that, described D2D resource control entity, according to the positional information of described terminal and D2D resource occupation information, is described terminal distribution D2D resource, comprises:
Described D2D resource control entity, according to the positional information of described terminal and local D2D resource occupation information of preserving, is determined that the distance with described terminal is less than the adjacent terminal end of set point, and is obtained the D2D resource occupation information of described adjacent terminal end;
According to the D2D resource occupation information of described adjacent terminal end, for described terminal distribution is different from the D2D resource that described adjacent terminal end takies, idle D2D resource.
7. a device-to-device D2D resource allocation methods for car networked terminals, is characterized in that, comprising:
Terminal sends the first signal to D2D resource control entity by base station, at least comprises the positional information of described terminal in described first signal;
Described terminal receives the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
8. method as claimed in claim 7, it is characterized in that, after described terminal receives the indication information of the D2D resource that described D2D resource control entity is sent by described base station, described method also comprises:
After described terminal detects time interval resource collision accident, secondary signal is sent to described D2D resource control entity by described base station, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
Described terminal receives the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
9. method as claimed in claim 7, it is characterized in that, described terminal sends the first signal to D2D resource control entity by base station, comprising:
Described terminal is the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
10. method as claimed in claim 9, it is characterized in that, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, described terminal is given by the described D2D Resourse Distribute of selection.
11. 1 kinds of device-to-device D2D resource control entity equipment, is characterized in that, comprising:
Receiver module, for the first signal that receiving terminal is sent by base station, at least carries the positional information of described terminal in described first signal;
Processing module, for the D2D resource occupation information of preserving according to positional information and this locality of described terminal, for the described terminal distribution free time D2D resource and the indication information of described D2D resource distributed is sent to described terminal by described base station, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
12. equipment as claimed in claim 11, is characterized in that, described receiver module also for:
Receive the secondary signal that described terminal is sent by described base station, described secondary signal comprises the indication information of time interval resource collision accident;
Described processing module also for:
According to positional information and the described D2D resource occupation information of described terminal, be the D2D resource that described terminal distribution is new, and the indication information of described new D2D resource is sent to described terminal by described base station.
13. equipment as claimed in claim 11, is characterized in that, described receiver module specifically for:
Receiving described terminal take preset duration as described first signal sent by described base station in the cycle.
14. equipment as claimed in claim 13, is characterized in that, described processing module also for:
In described D2D resource occupation information, preserve or upgrade the positional information of described terminal; And after for described terminal distribution D2D resource, in described D2D resource occupation information, preserve or upgrade the D2D resource occupation information of described terminal.
15. equipment as claimed in claim 11, is characterized in that, also carry the reception quality information of the D2D resource timeslot of described terminal position in described first signal;
Described processing module specifically for:
Before sending to described terminal for described terminal distribution D2D resource and by the indication information of the described D2D resource of distributing by described base station, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot; According to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, give described terminal by the described D2D Resourse Distribute of selection.
16. equipment as described in any one of claim 11-15, is characterized in that, described processing module specifically for:
According to positional information and the local D2D resource occupation information of preserving of described terminal, determine that the distance with described terminal is less than the adjacent terminal end of set point, and obtain the D2D resource occupation information of described adjacent terminal end;
According to the D2D resource occupation information of described adjacent terminal end, for described terminal distribution is different from the D2D resource that described adjacent terminal end takies, idle D2D resource.
17. 1 kinds of terminals, is characterized in that, comprising:
Sending module, for being sent the first signal by base station to D2D resource control entity, at least comprises the positional information of described terminal in described first signal;
Receiver module, for receiving the indication information of the D2D resource that described D2D resource control entity is sent by described base station, the indication information of described D2D resource by described D2D resource control entity according to the positional information of described terminal and local D2D resource occupation information of preserving for sending after D2D resource described in described terminal distribution, the positional information that described D2D resource occupation information comprises the terminal of distributing D2D resource and the D2D resource information taken thereof.
18. terminals as claimed in claim 17, is characterized in that, also comprise detection module, for detecting the whether generation time slot collision event of the D2D resource of described terminal;
Described sending module also for:
After described detection module detects time interval resource collision accident, secondary signal is sent to described D2D resource control entity by described base station, the indication information of time interval resource collision accident is carried in described secondary signal, by described D2D resource control entity according to the positional information of described terminal and described D2D resource occupation information, it is the new D2D resource of described terminal distribution free time;
Described receiver module also for:
Receive the indication information of the described new D2D resource that described D2D resource control entity is sent by described base station.
19. terminals as claimed in claim 17, is characterized in that, described sending module specifically for:
Be the cycle send described first signal to described D2D resource control entity by described base station with preset duration.
20. terminals as claimed in claim 19, it is characterized in that, the reception quality information of the D2D resource timeslot of described terminal position is also carried in described first signal, be greater than the time slot of set point according to the reception quality information determination interference signal intensity of described D2D resource timeslot by described D2D resource control entity, according to positional information and the local D2D resource occupation information of preserving of described terminal, select idle D2D resource, determine that the time slot of the described D2D resource selected is different from the time slot that the described interference signal intensity determined is greater than set point, described terminal is given by the described D2D Resourse Distribute of selection.
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