CN105430751B - The device-to-device D2D resource allocation methods and relevant device of car networking terminal - Google Patents
The device-to-device D2D resource allocation methods and relevant device of car networking terminal Download PDFInfo
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Abstract
The invention discloses a kind of D2D resource allocation methods of car networking terminal and relevant devices to improve the service efficiency of radio resource, improve the efficiency of resource allocation and update to realize the D2D resource allocation of terminal in car networking system.This method are as follows: D2D resource control entity receives the first signal that terminal is sent by base station, and the location information of the terminal is at least carried in first signal；The D2D resource occupation information that the D2D resource control entity is saved according to the location information of the terminal and locally, for the terminal distribution free time D2D resource and the instruction information of the D2D resource of distribution is sent to the terminal by the base station, include the location information for the terminal for having distributed D2D resource and its D2D resource information of occupancy in the D2D resource occupation information.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of device-to-device (the Device to of car networking terminal
Device, D2D) resource allocation methods and relevant device.
Background technique
The car networking communication system of vehicle active safety is that the information of vehicle and road is obtained based on wireless communication technique, is led to
It crosses vehicle vehicle, bus or train route information exchange and shares and realize intelligent coordinated between vehicle and infrastructure and cooperation, reach Optimum utilization system
The purpose for resource, raising traffic safety, the alleviation traffic congestion of uniting.
The car networking communication system of vehicle active safety has higher requirement to communication delay, therefore is generally used short distance
The self-organization network technology of communication.At present in car networking field, the form used according to radio resource, self-organizing that there are two main classes
Network technology, one is dedicated short-distance wireless communication (DSRC) technologies based on IEEE 802.11p, this is oneself of asynchronous communication
Organize network；Another kind is to move the synchronous communication self-organizing network that CDMA slotted ALOHA (MS-ALOHA) is representative.
Each terminal requires to be communicated in self-organizing network, but the mutual strange and dynamic change of each terminal, to guarantee
Safety is required comprising no small security information data in each data that each terminal is sent；For using MS-ALOHA
The self-organizing system of mechanism also needs the information such as sending time slots occupancy in this way.These all reduce the transmission of payload data
Amount influences the efficiency of communication link, is also unfavorable for the extension of communication function very much.
Terminal sends and receives data all under the control of a network in cell mobile communication systems, distributes nothing by grid
Line resource, and data are transmitted by network.To meet specific communication requirement, 3GPP has also carried out device-to-device
The discussion and research of (Device to Device, D2D) communication service.
3GPP D2D technology includes close to service discovery (D2D Discovery) and close to communication for service (D2D
Communication) two major classes function.As shown in Figure 1, two kinds of Linktypes can be defined: D2D link: referring to equipment and equipment
Between the link that is directly communicated；Equipment is to network (D2N) link: the link communicated between equipment and network node.
The terminal for participating in D2D Discovery/Communication is divided into two kinds of roles: D2D sends terminal: i.e. transmission D2D
The terminal of Discovery/Communication message；D2D receives terminal: i.e. reception D2D sends the D2D that terminal is sent
The terminal of Discovery/Communication message.
For 3GPP D2D technology, mainly using the band inner portion for having distributed frequency spectrum, a small amount of terminal can activate D2D industry
Business, and the terminal of car networking requires distribution frequency spectrum resource, the characteristic of 3GPP D2D technology is different from the demand that car networking is applied,
Therefore the radio resource allocation mode of terminal can not directly use for reference the nothing of terminal in 3GPP D2D technology in vehicle network communication system
Line resource distribution mode.
As it can be seen that needing to seek a kind of terminal resource distribution method for car networking communication system.
Summary of the invention
The embodiment of the present invention provides the D2D resource allocation methods and relevant device of a kind of car networking terminal, to realize vehicle
The D2D resource allocation of terminal, improves the service efficiency of radio resource in networked system, improves the effect of resource allocation and update
Rate.
Specific technical solution provided in an embodiment of the present invention is as follows:
In a first aspect, providing a kind of device-to-device D2D resource allocation methods of car networking terminal, comprising:
D2D resource control entity receives the first signal that terminal is sent by base station, at least carries in first signal
The location information of the terminal；
The D2D resource occupation that the D2D resource control entity is saved according to the location information of the terminal and locally is believed
Breath is the D2D resource of the terminal distribution free time and sends the instruction information of the D2D resource of distribution by the base station
It include the location information and its occupancy of the terminal for having distributed D2D resource to the terminal, in the D2D resource occupation information
D2D resource information.
Preferably, the D2D resource control entity is the terminal distribution D2D resource and the D2D resource by distribution
Instruction information the terminal is sent to by the base station after, the method also includes:
The D2D resource control entity receives the second signal that the terminal is sent by the base station, second letter
It include the instruction information of time interval resource collision accident in number；
Location information and the D2D resource occupation information of the D2D resource control entity according to the terminal, for institute
The new D2D resource of terminal distribution is stated, and the instruction information of the new D2D resource is sent to the end by the base station
End.
Preferably, the D2D resource control entity receives the first signal that terminal is sent by base station, comprising:
The D2D resource control entity receives described in the terminal sent using preset duration as the period by the base station
First signal.
Preferably, after the D2D resource control entity receives first signal, further includes:
The D2D resource control entity saves in the D2D resource occupation information or updates the position letter of the terminal
Breath；
The D2D resource control entity is after the terminal distribution D2D resource, further includes:
The D2D resource control entity saves in the D2D resource occupation information or updates the D2D resource of the terminal
Occupied information.
Preferably, the quality of reception letter of the D2D resource timeslot of the terminal position is also carried in first signal
Breath；
The D2D resource control entity is the terminal distribution D2D resource and believes the instruction of the D2D resource of distribution
Before breath is sent to the terminal by the base station, the method also includes:
The D2D resource control entity determines interference signal intensity according to the reception quality information of the D2D resource timeslot
The time slot being greater than the set value；
The D2D resource occupation that the D2D resource control entity is saved according to the location information of the terminal and locally is believed
Breath is the D2D resource of the terminal distribution free time, comprising:
The D2D resource occupation that the D2D resource control entity is saved according to the location information of the terminal and locally is believed
Breath selects idle D2D resource, determines that the time slot of the D2D resource of selection is greater than with the interference signal intensity determined
The time slot of setting value is different, gives the D2D resource allocation of selection to the terminal.
Preferably, the D2D resource control entity is according to the location information and D2D resource occupation information of the terminal,
For the terminal distribution D2D resource, comprising:
The D2D resource occupation that the D2D resource control entity is saved according to the location information of the terminal and locally is believed
Breath determines the adjacent terminal end for being less than setting value at a distance from the terminal, and obtains the D2D resource occupation letter of the adjacent terminal end
Breath；
It is that the terminal distribution and the adjacent terminal end occupy according to the D2D resource occupation information of the adjacent terminal end
Different, the idle D2D resource of D2D resource.
Second aspect provides a kind of device-to-device D2D resource allocation methods of car networking terminal, comprising:
Terminal sends the first signal to D2D resource control entity by base station, includes at least in first signal described
The location information of terminal；
The terminal receives the instruction information for the D2D resource that the D2D resource control entity is sent by the base station, institute
State what the instruction information of D2D resource was saved by the D2D resource control entity according to the location information of the terminal and locally
D2D resource occupation information includes having divided in the D2D resource occupation information to send after D2D resource described in the terminal distribution
The location information of terminal with D2D resource and its D2D resource information of occupancy.
Preferably, the terminal receives the instruction for the D2D resource that the D2D resource control entity is sent by the base station
After information, the method also includes:
After the terminal detects time interval resource collision accident, sent out by the base station to the D2D resource control entity
Second signal is sent, the instruction information of time interval resource collision accident is carried in the second signal, by the D2D resource control entity
According to the location information of the terminal and the D2D resource occupation information, for the idle new D2D money of the terminal distribution
Source；
The terminal receives the finger for the new D2D resource that the D2D resource control entity is sent by the base station
Show information.
Preferably, the terminal sends the first signal to D2D resource control entity by base station, comprising:
The terminal sends first signal to the D2D resources control by the base station using preset duration as the period
Entity.
Preferably, the quality of reception of the D2D resource timeslot of the terminal position is also carried in first signal
Information determines that interference signal intensity is big according to the reception quality information of the D2D resource timeslot by the D2D resource control entity
In the time slot of setting value, the D2D resource occupation information according to the location information of the terminal and locally saved is selected idle
D2D resource, the time slot that the interference signal intensity of the time slot and determination that determine the D2D resource of selection is greater than the set value is not
Together, the D2D resource allocation of selection is given to the terminal.
The third aspect provides a kind of device-to-device D2D resource control entity equipment, comprising:
Receiving module, the first signal sent for receiving terminal by base station at least carry institute in first signal
State the location information of terminal；
Processing module, the D2D resource occupation information for according to the location information of the terminal and locally saving, for institute
It states the D2D resource of terminal distribution free time and is sent to by the base station instruction information of the D2D resource of distribution described
Terminal includes the location information for the terminal for having distributed D2D resource and its D2D resource of occupancy in the D2D resource occupation information
Information.
Preferably, the receiving module is also used to:
The second signal that the terminal is sent by the base station is received, includes that time interval resource collides in the second signal
The instruction information of event；
The processing module is also used to:
It is the new D2D money of the terminal distribution according to the location information of the terminal and the D2D resource occupation information
Source, and the instruction information of the new D2D resource is sent to the terminal by the base station.
Preferably, the receiving module is specifically used for:
Receive first signal that the terminal is sent as the period by the base station using preset duration.
Preferably, the processing module is also used to:
The location information of the terminal is saved or updated in the D2D resource occupation information；And for the terminal
After distributing D2D resource, the D2D resource occupation information of the terminal is saved or updated in the D2D resource occupation information.
Preferably, the quality of reception letter of the D2D resource timeslot of the terminal position is also carried in first signal
Breath；
The processing module is specifically used for:
It is sent for the terminal distribution D2D resource and by the instruction information of the D2D resource of distribution by the base station
Before the terminal, determine what interference signal intensity was greater than the set value according to the reception quality information of the D2D resource timeslot
Time slot；The D2D resource occupation information according to the location information of the terminal and locally saved selects idle D2D resource, really
The time slot for determining the D2D resource of selection is different from the time slot that the interference signal intensity determined is greater than the set value, and will select
The D2D resource allocation give the terminal.
Preferably, the processing module is specifically used for:
The D2D resource occupation information according to the location information of the terminal and locally saved, it is determining with the terminal
Distance is less than the adjacent terminal end of setting value, and obtains the D2D resource occupation information of the adjacent terminal end；
It is that the terminal distribution and the adjacent terminal end occupy according to the D2D resource occupation information of the adjacent terminal end
Different, the idle D2D resource of D2D resource.
Fourth aspect provides a kind of terminal, comprising:
Sending module, for by base station the first signal of transmission to D2D resource control entity, in first signal at least
Location information including the terminal；
Receiving module, the instruction for receiving the D2D resource that the D2D resource control entity is sent by the base station are believed
Breath, the instruction information of the D2D resource is by the D2D resource control entity according to the location information of the terminal and local guarantor
The D2D resource occupation information deposited is to send after D2D resource described in the terminal distribution, includes in the D2D resource occupation information
The location information of the terminal of D2D resource and its D2D resource information of occupancy are distributed.
Preferably, further include detection module, for detect the terminal D2D resource whether generation time slot collision thing
Part；
The sending module is also used to:
After the detection module detects time interval resource collision accident, by the base station to the D2D resources control
Entity sends second signal, the instruction information of time interval resource collision accident is carried in the second signal, by the D2D resource control
Location information and the D2D resource occupation information of the entity processed according to the terminal are the new of the terminal distribution free time
D2D resource；
The receiving module is also used to:
Receive the instruction information for the new D2D resource that the D2D resource control entity is sent by the base station.
Preferably, the sending module is specifically used for:
First signal is sent to the D2D resource control entity by the base station using preset duration as the period.
Preferably, the quality of reception of the D2D resource timeslot of the terminal position is also carried in first signal
Information determines that interference signal intensity is big according to the reception quality information of the D2D resource timeslot by the D2D resource control entity
In the time slot of setting value, the D2D resource occupation information according to the location information of the terminal and locally saved is selected idle
D2D resource, the time slot that the interference signal intensity of the time slot and determination that determine the D2D resource of selection is greater than the set value is not
Together, the D2D resource allocation of selection is given to the terminal.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, D2D resource control entity is set in network side, is provided by the D2D
Source controlled entity management has distributed the location information of the terminal of D2D resource and its D2D resource information of occupancy, D2D resources control
Entity receives the location information of terminal by base station, according to the location information of the terminal, and distributed the terminal of D2D resource
The D2D resource information of location information and its occupancy, for the D2D resource of terminal distribution free time, thus ensure that resource allocation and
The efficiency of update, and improve the service efficiency of radio resource.
Detailed description of the invention
Fig. 1 is existing 3GPP D2D discovery/communication scheme；
Fig. 2 is the system architecture schematic diagram for carrying out D2D resource allocation in the embodiment of the present invention using cellular network；
Fig. 3 is D2D resource control entity overlay area schematic diagram in the embodiment of the present invention；
Fig. 4 is the process signal that D2D resource control entity is car networking terminal distribution D2D resource in the embodiment of the present invention
Figure；
Fig. 5 is the process signal that terminal request D2D resource control entity distributes D2D resource for it in the embodiment of the present invention
Figure；
Fig. 6 is the structural schematic diagram of D2D resource control entity equipment in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram 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.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
For this scene of the D2D resource allocation of car networking terminal, is proposed in the embodiment of the present invention and utilize cellular network
D2D resource allocation methods, as shown in Fig. 2, D2N link is conventional wireless communication link in cellular network, terminal first with
System establishes D2N link, and the D2D resource of distribution is sent to terminal by D2N link, passes through distribution between each terminal by system
D2D resource establishes D2D link, passes through D2D link direct communication.
The core idea of the invention is as follows: D2D resource control entity is set in network side, is led to by the D2D resource control entity
The D2D resource occupation of each terminal of resource has been distributed in all cells crossed in the Radio Link acquisition control area of cellular network
Information, the D2D resource occupation information include the location information and the occupied D2D resource of the terminal for the terminal for having distributed resource
Instruction information.
Wherein, which can be arranged in identical network element with base station, also can be set on base station
In other network elements of layer, or in the individual network element of network settings as D2D resource control entity.If D2D resource control entity
It is arranged in identical network element with base station, then D2D resource control entity is base station；If D2D resource control entity is arranged in base
It stands in the network element on upper layer, intermediate node of the base station as D2D resource control entity and terminal is responsible for the forwarding of message.
D2D resource control entity can obtain the D2D resource occupation information of each cell in its control area by base station.
Wherein, the quantity of the cell of D2D resource control entity control area covering is to preset.It specifically, can basis
The many factors such as the capacity of Cellular Networks cell, the demand of D2D resource, the D2D transmission power designs of terminal determine.For example, such as Fig. 3
Shown, the region of D2D resource control entity covering is preset as the region of 7 cells composition, wherein 6 cells are with remaining
It arranges centered on one cell, which belongs to three base stations (eNB), and each circle of dotted line represents a D2D money in Fig. 3
The region of source controlled entity covering.
In following embodiment, idle D2D resource includes unappropriated D2D resource, and is already allocated to other terminals
But the D2D resource that can be multiplexed.
Based on the principle, in the embodiment of the present invention, as shown in figure 4, D2D resource control entity is car networking terminal distribution
The method detailed process of D2D resource is as follows:
Step 401:D2D resource control entity receives the first signal for sending by base station of terminal, in first signal extremely
The location information of the terminal is carried less.
In the embodiment of the present invention, the mode for not obtaining the location information of itself to terminal is limited, for that can obtain
The mode of own location information is suitable for the present invention, for example, terminal is obtained accurately using modes such as global positioning system (GPS)
Location information.
Preferably, D2D resource control entity receives the first signal that terminal is sent as the period by base station using preset duration,
So that D2D resource control entity obtains the location information of the terminal in control area in time.In specific implementation, terminal report
It can be with information such as the service conditions (such as D2D communication quality) of the D2D resource of carried terminal in one signal.
In one specific embodiment, base station carries out semi-continuous scheduling to terminal in media access control (MAC) layer, to realize
The location information of terminal is obtained using preset duration as the period, which can reduce the Physical Downlink Control Channel of D2N link
(PDCCH) expense of channel.
Preferably, it after D2D resource control entity receives the first signal, saves or is updated eventually in D2D resource occupation information
The location information at end.
In specific implementation, terminal booting after, by base station send the first signal before, the terminal need first with network
Wireless heterogeneous networks (RRC) connection is established in side, is terminal distribution D2N link private resource by network side.It is advised in cellular cell
It draws in the planning process of D2D resource control entity overlay area, configures the parameter of system, the transmitting function including terminal D 2D link
Rate, the parameters such as multiplex distance of D2D link circuit resource.
The D2D resource occupation that step 402:D2D resource control entity is saved according to the location information of the terminal and locally
Information, for the terminal distribution free time D2D resource and the instruction information of the D2D resource of distribution is sent to the end by base station
It holds, includes the location information for the terminal for having distributed D2D resource and its D2D resource information of occupancy in the D2D resource occupation information.
Preferably, after D2D resource control entity is terminal distribution D2D resource, D2D resource control entity is accounted in D2D resource
With the D2D resource occupation information of preservation or more new terminal in information.
Preferably, after for terminal distribution D2D resource, whether the terminal real-time monitoring D2D resource, which occurs time slot, is touched
Event is hit, and when monitoring time slot collision event, second signal is sent to D2D resource control entity by base station, this second
The instruction information of time interval resource collision accident is carried in signal.
Correspondingly, D2D resource control entity receives the second signal that terminal is sent by base station, according to the position of the terminal
Information and D2D resource occupation information for the new D2D resource of the terminal distribution, and the instruction information of the new D2D resource are led to
It crosses base station and is sent to the terminal.
In the embodiment of the present invention, D2D link circuit resource is not necessarily to bind with the resource of D2N link, and D2N link switching will not trigger
D2D link circuit resource is redistributed, and D2D link circuit resource redistributes the switching that will not trigger D2N link.Wherein, D2N chain
Road switching is identical as the link switching process in cellular network, i.e., the signal quality that the adjacent cell of cell is currently located in terminal is excellent
When the current area, the D2N link switching of triggering terminal to the adjacent cell.
For example, when terminal moves out current area and D2N link switching occurs, if D2D resource timeslot does not occur for the terminal
Therefore collision accident does not then redistribute the D2D resource of the terminal；Terminal moves out current D2D resource control entity
Management region, if D2D resource timeslot collision accident does not occur for the terminal, not therefore and redistribute the terminal D2D money
Source.
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 reception quality information according to D2D resource timeslot is true
Determine the time slot that interference signal intensity is greater than the set value, wherein interference signal intensity is bigger, and the quality of reception of the time slot is poorer, does
Disturb that signal strength is smaller, the quality of reception of the time slot is more excellent, and the time slot for being herein greater than the set value interference signal intensity is determined as
It is unsatisfactory for desired time slot；
The D2D resource occupation information that D2D resource control entity is saved according to the location information of terminal and locally, selection are empty
Not busy D2D resource, and the time slot that the time slot of the D2D resource of determining selection and the interference signal intensity determined are greater than the set value is not
Together, by the D2D resource allocation of selection to terminal.
This is preferably carried out in mode, however, it is determined that the time slot of the D2D resource of selection is greater than with the interference signal intensity determined
The time slot of setting value is identical, then reselects idle D2D resource, until determining the time slot of the D2D resource of selection and determining
After the time slot that interference signal intensity is greater than the set value is different, by the D2D resource allocation of selection to terminal.
In one specific implementation, D2D resource that D2D resource control entity is saved according to the location information of terminal and locally
Occupied information determines the adjacent terminal end for being less than setting value at a distance from the terminal, and obtains the D2D resource occupation of the adjacent terminal end
Information；According to the D2D resource occupation information of the adjacent terminal end, for terminal distribution D2D resource.
Specifically, the idle D2D resource different from the D2D resource that adjacent terminal end occupies for terminal distribution.
It wherein, will be more than the occupied D2D resource of other terminals of setting value at a distance from the terminal, being can be by the end
Hold the D2D resource of multiplexing.
Based on the same inventive concept, as shown in figure 5, terminal request D2D resource control entity distributes the detailed of D2D resource for it
Thin method flow is as follows:
Step 501: terminal sends the first signal to D2D resource control entity by base station, at least wraps in first signal
Include the location information of the terminal.
Preferably, terminal sends the first signal to D2D resource control entity by base station using preset duration as the period.One
In specific embodiment, base station carries out semi-continuous scheduling to terminal in MAC layer, obtains terminal by the period of preset duration to realize
Location information, which can reduce the expense of Physical Downlink Control Channel (PDCCH) channel of D2N link.
In specific implementation, terminal booting after, by base station send the first signal before, the terminal need first with network
Wireless heterogeneous networks (RRC) connection is established in side, is terminal distribution D2N link private resource by network side.It is advised in cellular cell
It draws in the planning process of D2D resource control entity overlay area, configures the parameter of system, the transmitting function including terminal D 2D link
Rate, the parameters such as multiplex distance of D2D link circuit resource.
Step 502: terminal receives the instruction information for the D2D resource that D2D resource control entity is sent by base station, the D2D
The D2D resource occupation that the instruction information of resource is saved by D2D resource control entity according to the location information of the terminal and locally
Information includes the position for having distributed the terminal of D2D resource in the D2D resource occupation information to send after terminal distribution D2D resource
D2D resource information confidence breath and its occupied.
Preferably, after the instruction information for the D2D resource that terminal reception D2D resource control entity is sent by base station, implement
The D2D resource is monitored with the presence or absence of time interval resource collision accident；
After the terminal detects time interval resource collision accident, second signal is sent to D2D resource control entity by base station,
The instruction information of time interval resource collision accident is carried in the second signal；By D2D resource control entity according to the position of the terminal
Information and D2D resource occupation information, for the new D2D resource of terminal distribution free time；
Terminal receives the instruction information of the 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 terminal distribution D2D resource, according to the quality of reception of the D2D resource timeslot
Information determines the time slot that interference signal intensity is greater than the set value, the D2D resource according to the location information of terminal and locally saved
Occupied information selects idle D2D resource, however, it is determined that the time slot of the D2D resource of selection and the interference signal intensity determined
The time slot being greater than the set value is different, gives the D2D resource allocation of selection to the terminal.
If it is determined that the time slot of the D2D resource of selection is identical as the time slot that the interference signal intensity determined is greater than the set value,
Idle D2D resource is reselected, until the time slot of the D2D resource reselected is greater than with the interference signal intensity determined
When the time slot difference of setting value, the D2D resource allocation reselected is given to the terminal.
Based on the same inventive concept, a kind of D2D resource control entity equipment, the D2D are additionally provided in the embodiment of the present invention
The specific implementation of resource control entity equipment can be found in the description as described in D2D resource control entity in above method embodiment, weight
Multiple place repeats no more, as shown in fig. 6, the D2D resource control entity equipment specifically includes that
Receiving module 601, the first signal sent for receiving terminal by base station at least carry institute in first signal
State the location information of terminal；
Processing module 602, the D2D resource occupation information for according to the location information of the terminal and locally saving are
The instruction information of the D2D resource of distribution is simultaneously sent to the terminal, D2D money by base station by the D2D resource of terminal distribution free time
It include the location information for the terminal for having distributed D2D resource and its D2D resource information of occupancy in the occupied information of source.
Preferably, receiving module 601 is also used to:
The second signal that terminal is sent by base station is received, includes the instruction of time interval resource collision accident in the second signal
Information；
Processing module 602 is also used to:
According to the location information of terminal and D2D resource occupation information, for the new D2D resource of the terminal distribution, and should
The instruction information of new D2D resource is sent to the terminal by base station.
Preferably, receiving module 601 is specifically used for:
Receive the first signal that terminal is sent as the period by base station using preset duration.
Preferably, processing module 602 is also used to:
The location information of preservation or more new terminal in D2D resource occupation information；And for terminal distribution D2D resource
Afterwards, the D2D resource occupation information of the terminal is saved or updated in D2D resource occupation information.
Preferably, the reception quality information of the D2D resource timeslot of carried terminal position is gone back in the first signal；
Processing module 602 is specifically used for:
Before being sent to the terminal by base station for terminal distribution D2D resource and by the instruction information of the D2D resource of distribution,
The time slot that interference signal intensity is greater than the set value is determined according to the reception quality information of D2D resource timeslot；According to the position of the terminal
Confidence ceases and the D2D resource occupation information that locally saves, selects idle D2D resource, determine the D2D resource of selection when
Gap is different from the time slot that the interference signal intensity determined is greater than the set value, and gives the D2D resource allocation of selection to the terminal.
This is preferably carried out in mode, however, it is determined that the time slot of the D2D resource of selection is greater than with the interference signal intensity determined
The time slot of setting value is identical, then reselects idle D2D resource, until determining the time slot of the D2D resource of selection and determining
After the time slot that interference signal intensity is greater than the set value is different, by the D2D resource allocation of selection to terminal.
In one specific implementation, processing module 602 is specifically used for:
The D2D resource occupation information according to the location information of terminal and locally saved, determination are small at a distance from the terminal
In the adjacent terminal end of setting value, and obtain the D2D resource occupation information of the adjacent terminal end；
According to the D2D resource occupation information of the adjacent terminal end, the D2D occupied for the terminal distribution and the adjacent terminal end is provided
Source is different, D2D resource.
Based on the same inventive concept, another D2D resource control entity equipment is additionally provided in the embodiment of the present invention, it should
The specific implementation of D2D resource control entity equipment can be found in the description as described in D2D resource control entity in above method embodiment,
Overlaps will not be repeated, as shown in fig. 7, the D2D resource control entity equipment mainly includes by bus receipts interconnected
Hair machine 701, processor 702 and memory 703, wherein transceiver 701 under the control of processor 702 for sending and receiving
Data, specifically:
Transceiver 701, the first signal sent for receiving terminal by base station at least carry institute in first signal
State the location information of terminal；And the instruction information of the D2D resource for distributing processor 702 is sent out by the base station
Give the terminal；
Processor 702 executes following process for reading the program in memory 703:
The D2D resource occupation information according to the location information of the terminal and locally saved, it is empty for the terminal distribution
Not busy D2D resource includes the location information and its occupancy of the terminal for having distributed D2D resource in the D2D resource occupation information
D2D resource information.
Preferably, transceiver 701 is also used to receive the second signal that the terminal is sent by the base station, and described second
It include the instruction information of time interval resource collision accident in signal；
Processor 702 is also used to location information and the D2D resource occupation information according to the terminal, is the end
New D2D resource is distributed at end, and indicates that transceiver 701 sends the instruction information of the new D2D resource by the base station
To the terminal.
Preferably, transceiver 701 receive the terminal using preset duration as the period sent by the base station described
One signal.
This is preferably carried out in mode, and processor 702 is also used to that institute is saved or updated in the D2D resource occupation information
State the location information of terminal；And after for the terminal distribution D2D resource, in the D2D resource occupation information save or
Update the D2D resource occupation information of the terminal.
Preferably, the reception quality information of the D2D resource timeslot of the terminal position is also carried in the first signal；
Processor 702 is specifically used for:
The time slot that interference signal intensity is greater than the set value is determined according to the reception quality information of the D2D resource timeslot；Root
According to the location information and the local D2D resource occupation information that saves of the terminal, idle D2D resource is selected, determines selection
The D2D resource time slot it is different from the time slot that is greater than the set value of the interference signal intensity determined, will be described in selection
D2D resource allocation gives the terminal.
Preferably, processor 702 is specifically used for:
The D2D resource occupation information according to the location information of the terminal and locally saved, it is determining with the terminal
Distance is less than the adjacent terminal end of setting value, and obtains the D2D resource occupation information of the adjacent terminal end；
It is that the terminal distribution and the adjacent terminal end occupy according to the D2D resource occupation information of the adjacent terminal end
D2D resource is different, D2D resource.
Wherein, bus architecture may include the bus and bridge of any number of interconnection, one specifically represented by processor
Or the various circuits of memory that multiple processors and memory represent link together.Bus architecture can also will be such as peripheral
Various other circuits of equipment, voltage-stablizer and management circuit or the like link together, these are all well known in the art
, therefore, it will not be further described herein.Bus interface provides interface.Transceiver can be multiple element, that is, wrap
Transmitter and transceiver are included, the unit for communicating over a transmission medium with various other devices is provided.Processor is responsible for management
Bus architecture and common processing, memory can store processor used data when executing operation.
Based on the same inventive concept, a kind of terminal is additionally provided in the embodiment of the present invention, the specific implementation of the terminal can be joined
See the description as described in terminal in above method embodiment, overlaps will not be repeated, as shown in figure 8, the terminal specifically includes that
Sending module 801, for by base station the first signal of transmission to D2D resource control entity, in first signal
Including at least the location information of the terminal；
Receiving module 802, for receiving the finger for the D2D resource that the D2D resource control entity is sent by the base station
Show information, the instruction information of the D2D resource is by the D2D resource control entity according to the location information of the terminal and sheet
The D2D resource occupation information that ground saves is sends after D2D resource described in the terminal distribution, in the D2D resource occupation information
Including having distributed the location information of the terminal of D2D resource and its D2D resource information of occupancy.
Preferably, further include detection module 803, for detect the terminal D2D resource whether generation time slot collision
Event；
The sending module 801 is also used to:
After the detection module detects time interval resource collision accident, by the base station to the D2D resources control
Entity sends second signal, the instruction information of time interval resource collision accident is carried in the second signal, by the D2D resource control
Location information and the D2D resource occupation information of the entity processed according to the terminal are the new of the terminal distribution free time
D2D resource；
The receiving module 802 is also used to:
Receive the instruction information for the new D2D resource that the D2D resource control entity is sent by the base station.
Preferably, the sending module 801 is specifically used for:
First signal is sent to the D2D resource control entity by the base station using preset duration as the period.
Preferably, the quality of reception of the D2D resource timeslot of the terminal position is also carried in first signal
Information determines that interference signal intensity is big according to the reception quality information of the D2D resource timeslot by the D2D resource control entity
In the time slot of setting value, the D2D resource occupation information according to the location information of the terminal and locally saved is selected idle
D2D resource, the time slot that the interference signal intensity of the time slot and determination that determine the D2D resource of selection is greater than the set value is not
Together, the D2D resource allocation of selection is given to the terminal.
Based on the same inventive concept, another terminal is additionally provided in the embodiment of the present invention, the specific implementation of the terminal can
Referring to the description as described in terminal in above method embodiment, overlaps will not be repeated, as shown in figure 9, the terminal mainly includes
Processor 901, the memory 902, transceiver 903 connected by bus interface, wherein processor 901 is used to read storage
Program in device 902 executes following procedure:
Indicate transceiver 903 by base station the first signal of transmission to D2D resource control entity, in first signal at least
Location information including the terminal；
And instruction transceiver 903 receives the finger for the D2D resource that the D2D resource control entity is sent by the base station
Show information, the instruction information of the D2D resource is by the D2D resource control entity according to the location information of the terminal and sheet
The D2D resource occupation information that ground saves is sends after D2D resource described in the terminal distribution, in the D2D resource occupation information
Including having distributed the location information of the terminal of D2D resource and its D2D resource information of occupancy.
Preferably, processor 901 be also used to detect the D2D resource of the terminal whether generation time slot collision event；
And after detecting time interval resource collision accident, instruction transceiver 903 is by the base station to the D2D resource
Controlled entity sends second signal, and the instruction information of time interval resource collision accident is carried in the second signal, is provided by the D2D
Location information and the D2D resource occupation information of the source controlled entity according to the terminal, idle for the terminal distribution
New D2D resource；
And instruction transceiver 903 receives the new D2D that the D2D resource control entity is sent by the base station
The instruction information of resource.
Preferably, transceiver 903 sends first signal to the D2D by the base station using preset duration as the period
Resource control entity.
This is preferably carried out in mode, when also carrying the D2D resource of the terminal position in first signal
The reception quality information of gap is determined according to the reception quality information of the D2D resource timeslot by the D2D resource control entity and is done
The time slot that signal strength is greater than the set value is disturbed, the D2D resource occupation letter according to the location information of the terminal and locally saved
Breath selects idle D2D resource, determines that the time slot of the D2D resource of selection is greater than with the interference signal intensity determined
The time slot of setting value is different, gives the D2D resource allocation of selection to the terminal.
In the embodiment of the present invention, D2D resource control entity is according to the location information and D2D resource occupation information of terminal
For the D2D resource of terminal distribution free time, provided by the D2D of each terminal in the D2D resource control entity concentrated controling management region
Source avoids the blindness of random selection time interval resource, can be avoided and each terminal selection resource contention in self-organizing network occurs
The case where, improve the allocative efficiency of D2D resource.
In the embodiment of the present invention, security information field can be reduced using the D2N link distribution D2D resource of cellular network and is accounted for
Resource improves the flexibility of system design.The strategy redistributed for carrying out D2D resource based on collision detection can be reduced
The reassignment of unnecessary D2D resource.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (20)
1. a kind of device-to-device D2D resource allocation methods of car networking terminal characterized by comprising
D2D resource control entity receives the first signal for sending by base station of terminal, in first signal at least described in carrying
The location information of terminal；
The D2D resource occupation information that the D2D resource control entity is saved according to the location information of the terminal and locally is
The instruction information of the D2D resource of distribution is simultaneously sent to institute by the base station by the D2D resource of the terminal distribution free time
Terminal is stated, includes the location information for the terminal for having distributed D2D resource and its D2D money of occupancy in the D2D resource occupation information
Source information.
2. the method as described in claim 1, which is characterized in that the D2D resource control entity is terminal distribution D2D money
Source and after the instruction information of the D2D resource of distribution is sent to the terminal by the base station, the method also includes:
The D2D resource control entity receives the second signal that the terminal is sent by the base station, in the second signal
Instruction information including time interval resource collision accident；
Location information and the D2D resource occupation information of the D2D resource control entity according to the terminal are the end
New D2D resource is distributed at end, and the instruction information of the new D2D resource is sent to the terminal by the base station.
3. the method as described in claim 1, which is characterized in that the D2D resource control entity receives terminal and sent out by base station
The first signal sent, comprising:
The D2D resource control entity receive the terminal using preset duration as the period sent by the base station described first
Signal.
4. method as claimed in claim 3, which is characterized in that after the D2D resource control entity receives first signal,
Further include:
The D2D resource control entity saves or updates the location information of the terminal in the D2D resource occupation information；
The D2D resource control entity is after the terminal distribution D2D resource, further includes:
The D2D resource control entity saves in the D2D resource occupation information or updates the D2D resource occupation of the terminal
Information.
5. the method as described in claim 1, which is characterized in that also carry the terminal position in first signal
The reception quality information of D2D resource timeslot；
The D2D resource control entity is the terminal distribution D2D resource and leads to the instruction information of the D2D resource of distribution
The base station is crossed to be sent to before the terminal, the method also includes:
The D2D resource control entity determines that interference signal intensity is greater than according to the reception quality information of the D2D resource timeslot
The time slot of setting value；
The D2D resource occupation information that the D2D resource control entity is saved according to the location information of the terminal and locally is
The D2D resource of the terminal distribution free time, comprising:
The D2D resource occupation information that the D2D resource control entity is saved according to the location information of the terminal and locally, choosing
Idle D2D resource is selected, determines that the time slot of the D2D resource of selection is greater than the set value with the interference signal intensity determined
Time slot it is different, give the D2D resource allocation of selection to the terminal.
6. the method according to claim 1 to 5, which is characterized in that the D2D resource control entity is according to the end
The location information and D2D resource occupation information at end are the terminal distribution D2D resource, comprising:
The D2D resource occupation information that the D2D resource control entity is saved according to the location information of the terminal and locally, really
The fixed adjacent terminal end for being less than setting value at a distance from the terminal, and obtain the D2D resource occupation information of the adjacent terminal end；
It is that the D2D that the terminal distribution and the adjacent terminal end occupy is provided according to the D2D resource occupation information of the adjacent terminal end
The different idle D2D resource in source.
7. a kind of device-to-device D2D resource allocation methods of car networking terminal characterized by comprising
Terminal sends the first signal to D2D resource control entity by base station, and the terminal is included at least in first signal
Location information；
The terminal receives the instruction information for the D2D resource that the D2D resource control entity is sent by the base station, described
The D2D that the instruction information of D2D resource is saved by the D2D resource control entity according to the location information of the terminal and locally
Resource occupation information includes having distributed in the D2D resource occupation information to send after D2D resource described in the terminal distribution
The location information of the terminal of D2D resource and its D2D resource information of occupancy.
8. the method for claim 7, which is characterized in that the terminal receives the D2D resource control entity and passes through institute
After the instruction information for stating the D2D resource of base station transmission, the method also includes:
After the terminal detects time interval resource collision accident, the is sent to the D2D resource control entity by the base station
Binary signal carries the instruction information of time interval resource collision accident in the second signal, by the D2D resource control entity according to
The location information of the terminal and the D2D resource occupation information are the new D2D resource of the terminal distribution free time；
The instruction that the terminal receives the new D2D resource that the D2D resource control entity is sent by the base station is believed
Breath.
9. the method for claim 7, which is characterized in that the terminal sends the first signal to D2D resource by base station
Controlled entity, comprising:
The terminal sends first signal to the D2D resources control reality by the base station using preset duration as the period
Body.
10. method as claimed in claim 9, which is characterized in that it is in place also to carry the terminal institute in first signal
The reception quality information for the D2D resource timeslot set, by the D2D resource control entity according to the reception of the D2D resource timeslot
Quality information determines the time slot that interference signal intensity is greater than the set value, and according to the location information of the terminal and locally saves
D2D resource occupation information selects idle D2D resource, the interference for determining the time slot of the D2D resource of selection and determining
The time slot that signal strength is greater than the set value is different, gives the D2D resource allocation of selection to the terminal.
11. a kind of device-to-device D2D resource control entity equipment characterized by comprising
Receiving module, the first signal sent for receiving terminal by base station at least carry the end in first signal
The location information at end；
Processing module, the D2D resource occupation information for according to the location information of the terminal and locally saving, is the end
The instruction information of the D2D resource of distribution is simultaneously sent to the terminal by the base station by the idle D2D resource of end distribution,
It include the location information for the terminal for having distributed D2D resource and its D2D resource information of occupancy in the D2D resource occupation information.
12. equipment as claimed in claim 11, which is characterized in that the receiving module is also used to:
The second signal that the terminal is sent by the base station is received, includes time interval resource collision accident in the second signal
Instruction information；
The processing module is also used to:
It is the new D2D resource of the terminal distribution according to the location information of the terminal and the D2D resource occupation information,
And the instruction information of the new D2D resource is sent to the terminal by the base station.
13. equipment as claimed in claim 11, which is characterized in that the receiving module is specifically used for:
Receive first signal that the terminal is sent as the period by the base station using preset duration.
14. equipment as claimed in claim 13, which is characterized in that the processing module is also used to:
The location information of the terminal is saved or updated in the D2D resource occupation information；And for the terminal distribution
After D2D resource, the D2D resource occupation information of the terminal is saved or updated in the D2D resource occupation information.
15. equipment as claimed in claim 11, which is characterized in that also carry the terminal position in first signal
D2D resource timeslot reception quality information；
The processing module is specifically used for:
Institute is sent to by the base station for the terminal distribution D2D resource and by the instruction information of the D2D resource of distribution
Before stating terminal, the time slot that interference signal intensity is greater than the set value is determined according to the reception quality information of the D2D resource timeslot；
The D2D resource occupation information according to the location information of the terminal and locally saved selects idle D2D resource, determines choosing
The time slot for the D2D resource selected is different from the time slot that the interference signal intensity determined is greater than the set value, by the institute of selection
D2D resource allocation is stated to the terminal.
16. such as the described in any item equipment of claim 11-15, which is characterized in that the processing module is specifically used for:
The D2D resource occupation information according to the location information of the terminal and locally saved determines at a distance from the terminal
Less than the adjacent terminal end of setting value, and obtain the D2D resource occupation information of the adjacent terminal end；
It is that the D2D that the terminal distribution and the adjacent terminal end occupy is provided according to the D2D resource occupation information of the adjacent terminal end
The different idle D2D resource in source.
17. a kind of terminal characterized by comprising
Sending module, for D2D resource control entity, being included at least in first signal by base station the first signal of transmission
The location information of the terminal；
Receiving module, for receiving the instruction information for the D2D resource that the D2D resource control entity is sent by the base station,
The instruction information of the D2D resource is by the D2D resource control entity according to the location information of the terminal and local preservation
D2D resource occupation information be to be sent after D2D resource described in the terminal distribution, include in the D2D resource occupation information
Distribute the location information of the terminal of D2D resource and its D2D resource information of occupancy.
18. terminal as claimed in claim 17, which is characterized in that further include detection module, for detecting the D2D of the terminal
Resource whether generation time slot collision event；
The sending module is also used to:
After the detection module detects time interval resource collision accident, by the base station to the D2D resource control entity
Second signal is sent, the instruction information of time interval resource collision accident is carried in the second signal, it is real by the D2D resources control
Location information and the D2D resource occupation information of the body according to the terminal, for the idle new D2D money of the terminal distribution
Source；
The receiving module is also used to:
Receive the instruction information for the new D2D resource that the D2D resource control entity is sent by the base station.
19. terminal as claimed in claim 17, which is characterized in that the sending module is specifically used for:
First signal is sent to the D2D resource control entity by the base station using preset duration as the period.
20. terminal as claimed in claim 19, which is characterized in that it is in place also to carry the terminal institute in first signal
The reception quality information for the D2D resource timeslot set, by the D2D resource control entity according to the reception of the D2D resource timeslot
Quality information determines the time slot that interference signal intensity is greater than the set value, and according to the location information of the terminal and locally saves
D2D resource occupation information selects idle D2D resource, the interference for determining the time slot of the D2D resource of selection and determining
The time slot that signal strength is greater than the set value is different, gives the D2D resource allocation of selection to the terminal.
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