CN107682930A

CN107682930A - A kind of resource selection method and device

Info

Publication number: CN107682930A
Application number: CN201610624876.2A
Authority: CN
Inventors: 赵毅; 赵锐; 房家奕; 周海军; 林琳
Original assignee: Datang Telecom Technology Industry Holding Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-08-02
Filing date: 2016-08-02
Publication date: 2018-02-09
Anticipated expiration: 2036-08-02
Also published as: CN107682930B

Abstract

The present invention provides a kind of resource selection method and device, the resource selection method it include：Select just to pass the resource of resource and the control information for carrying first biography resource for the first business data packet；Before the resource of control information reaches, whether the first biography resource for detecting the first business data packet collides with the transfer resource of the second business data packet of second terminal；If collide, before the resource of control information reaches, select just to pass resource for the first business data packet again and/or whether resource and the first biography resource that reselects of detection for carrying the control information for just passing resource collides with the transfer resource of the second business data packet of second terminal；If not colliding, before the resource of control information reaches, the transfer resource of the first business data packet is determined, so as to reduce the resource gravity treatment probability caused by resource collision, and then reduces the electric quantity consumption caused by resource gravity treatment.

Description

A kind of resource selection method and device

Technical field

The present invention relates to communication technical field, particularly relates to a kind of resource selection method and device.

Background technology

At present in LTE-based V2V technologies, it is determined that being improved by the way of based on LTE D2D, wherein controlling Information (i.e. Scheduling assistance information, SA (Scheduling Assignment)) is by different letters from data message (Data) Road is transmitted, the SA information that receiving terminal is carried by detecting in control channel first, so as to according to the control information received Carry out the reception of data message.

In LTE-based V2V technologies, the pattern of two spike-type cultivars selection be present：

The first pattern is the pattern of the spontaneous selection resources of UE, as shown in Figure 1.In the mode of selection resource spontaneous UE In, UE needs to perceive the occupancy situation of resource, so as to carry out the selection of resource, as a rule has in two ways, one kind is root According to the other UE received SA information, know the other UE data transfer future data asset information to be taken, so as to The resource of transmission is selected in unappropriated data resource；Another kind is directly to carry out the inspection of energy to the resource of data transfer Survey, if energy is higher than certain thresholding, then data resource corresponding to thinking is occupied, on this basis with reference to data The time taken or periodicity are transmitted to determine the following occupied situation of data resource, selects unappropriated data resource to enter The transmission of row data.

Second of pattern is the resource selection pattern of base station auxiliary, and when situation of the vehicle in the network coverage, base station can be with V2V communications are scheduled by down control channel (PDCCH/EPDCCH), it is specific as shown in Figure 2.In this case, base Stand by sending V2V grant (mandate) message, instruction sends the resource location that vehicle sends SA and data.In simple terms, such as Shown in Fig. 3, UE needs that either energy measuring and data transfer persistently take the time or cycle of resource according to SA detection, The occupation condition of the following N number of subframe of structure, so as to select the time-frequency domain resources of free time to be passed in following N number of subframe It is defeated.The situation of UE1, UE2 and UE3 data resource occupancy is identified in figure, UE4 carries out data transmission if desired, can be in sky The transfer resource of oneself is selected in not busy resource.Which or can further be known by way of energy measuring in subframe Interference it is minimum, so as to select the minimum subframe of interference, as UE4 can be in first subframe and last subframe in Fig. 3 Idle frequency domain resource is selected to carry out the transmission of data；Or know that power in which subframe is larger and idle frequency domain money be present Source, then in subframe larger in power and idle frequency domain resource being present the frequency domain resource of free time can be selected to carry out data biography It is defeated.

By in the direct communication between the vehicle of PC-5 interfaces in LTE (Long Term Evolution) system, the transmission based on perception Resource selection mode can improve the transmission performance of data.Currently, reached in business data packet, UE (vehicle) judges to need to carry out During resource selection, first determine the transmission times of packet (would generally use repeatedly re-transmission to improve the sending performance of packet Mode.Just pass packet and re-transmission packet content can with identical, can also part it is identical), then according to maintenance Time slot state information is just passed for packet selection simultaneously and retransmission resource.Under normal circumstances, the time sum of resource selection is carried out According between meeting between the first biography resource of bag at regular intervals (such as several subframes (or time slot)), during this period of time in order to avoid from The first biography resource and retransmission resource and the first biography and retransmission resource of other (vehicles) UE selections of oneself selection collide and reduce number According to the performance of bag transmission, it is necessary to which the SA information for monitoring other (vehicles) UE transmissions (carries SA and sends the first of UE selections in SA information Pass and/or the information of retransmission resource) judge the first biography of oneself selection and the retransmission resource whether with other UE first biography and/or again Pass resource to collide, need to select just biography and retransmission resource again for UE when discovery is collided.When the number of retransmissions of packet When larger, before UE first biography packet is sent repeated detection go out resource collision probability it is larger, carrying out resource gravity treatment every time needs More amount of calculation is expended, and then increases UE electric quantity consumption.

The content of the invention

It is an object of the invention to provide a kind of resource selection method and device, solves in the prior art because of resource gravity treatment The problem of more amount of calculation causes terminal power consumption serious need to be expended.

In order to achieve the above object, the embodiment of the present invention provides a kind of resource selection method, including：

According to the information of the first business data packet of first terminal, for first business data packet selection just pass resource with And for carrying the resource of the control information for just passing resource；

Before the resource of the control information reaches, whether the first biography resource of first business data packet is detected with the The transfer resource of second business data packet of two terminals collides；Wherein, the transfer resource bag of second business data packet Include the first biography resource and/or retransmission resource of second business data packet；

If the transfer resource of the first biography resource and the second business data packet of the first business data packet collides, in the control Before the resource of information processed reaches, again for first business data packet select just to pass resource and/or for carry it is described just Pass the resource of the control information of resource and the first biography resource that reselects of detection whether the second business data packet with second terminal Transfer resource collide；

If the transfer resource of the first biography resource and the second business data packet of the first business data packet does not collide, described Before the resource of control information reaches, the transfer resource of first business data packet is determined；Wherein, first business datum The transfer resource of bag includes the first biography resource and/or retransmission resource of the first business data packet.

Wherein, according to the information of the first business data packet of first terminal, just passed for first business data packet selection The step of resource, including：

According to the transmission delay of the arrival time of the first business data packet of first terminal, first business data packet with And the time slot state information that first terminal is safeguarded, just pass resource for first business data packet selection.

Wherein, before the resource of the control information reaches, detecting the first biography resource of first business data packet is No the step of being collided with the second business data packet of second terminal transfer resource, including：

Before the resource of the control information reaches, the control letter for the second terminal that second terminal is sent is received Cease, the positional information of the transfer resource of the second business data packet of second terminal is carried in the control information；

According to the positional information of the transfer resource of the second business data packet, judge that the first biography of first business data packet provides Whether source collides with the transfer resource of the second business data packet of second terminal.

Wherein, described the step of just passing resource for first business data packet selection, includes：

Select just to pass time-domain resource for first business data packet；

The positional information of the transfer resource according to the second business data packet, judge the first of first business data packet The step of whether resource collides with the transfer resource of the second business data packet of second terminal is passed, including：

Judge that the described of selection just passes time-domain resource according to the positional information of the transfer resource of second business data packet In with the presence or absence of the frequency domain resource transmitted needed for first business data packet；

If the described of selection is just passed in time-domain resource in the presence of needed for transmission first business data packet and unoccupied Frequency domain resource, determine that the transmission of first biography time-domain resource and the second business data packet of first business data packet of selection provides Source does not collide；Otherwise, it determines the first biography time-domain resource of first business data packet of selection and the second business data packet Transfer resource collide.

Wherein, if the transfer resource of the first biography resource and the second business data packet of first business data packet does not touch Hit, before the resource of the control information reaches, the step of determining the transfer resource of first business data packet, including：

If the transfer resource of the first biography time-domain resource and the second business data packet of the first business data packet does not collide, Before the resource of the control information reaches, the first biography frequency domain resource of first business data packet and first industry are determined The re-transmission time-domain resource and re-transmission frequency domain resource of business packet.

Select just to pass time-domain resource for first business data packet and just pass frequency domain resource；

Judge that the described of selection just passes time-domain resource according to the positional information of the transfer resource of second business data packet Pass whether frequency domain resource all differs with the position of the transfer resource of second business data packet with first；

If the described of selection just passes time-domain resource and the transmission for just passing frequency domain resource and second business data packet The position of resource all differs, and determines the first biography time-domain resource of first business data packet and just passes frequency domain resource and second The transfer resource of business data packet does not collide；Otherwise, it determines the first biography time-domain resource of first business data packet and just The transfer resource for passing frequency domain resource and the second business data packet collides.

If the first biography time-domain resource of the first business data packet and the transmission money for just passing frequency domain resource and the second business data packet Source does not collide, before the resource of the control information reaches, determines the re-transmission time domain money of first business data packet Source and re-transmission frequency domain resource.

The embodiment of the present invention also provides a kind of resource selection device, including：

Selecting module, it is first business data packet for the information of the first business data packet according to first terminal Selection just passes resource and the resource for carrying the control information for just passing resource；

Detection module, for before the arrival of the resource of the control information, detecting the first of first business data packet Pass whether resource collides with the transfer resource of the second business data packet of second terminal；Wherein, second business datum The transfer resource of bag includes the first biography resource and/or retransmission resource of second business data packet；

First processing module, if the transfer resource of the first biography resource and the second business data packet for the first business data packet Collide, the control information resource reach before, again for first business data packet select just pass resource and/ Or for carry the control information for just passing resource resource and the first biography resource that reselects of detection whether with second terminal The transfer resource of the second business data packet collide；

Second processing module, if the transfer resource of the first biography resource and the second business data packet for the first business data packet Do not collide, before the resource of the control information reaches, determine the transfer resource of first business data packet；Its In, the transfer resource of first business data packet includes the first biography resource and/or retransmission resource of the first business data packet.

Wherein, the selecting module includes：

First choice submodule, arrival time, first industry for the first business data packet according to first terminal The time slot state information that the transmission delay and first terminal of business packet are safeguarded, for the first biography of first business data packet selection Resource.

Wherein, the detection module includes：

Receiving submodule, for before the arrival of the resource of the control information, receiving second terminal is sent described the The control information of two terminals, the position letter of the transfer resource of the second business data packet of second terminal is carried in the control information Breath；

Judging submodule, for the positional information of the transfer resource according to the second business data packet, judge first industry Whether the first biography resource of packet of being engaged in collides with the transfer resource of the second business data packet of second terminal.

Wherein, the selecting module includes：

Second selection submodule, for selecting just to pass time-domain resource for first business data packet；

The judging submodule includes：

First judging unit, the positional information for the transfer resource according to second business data packet judge selection It is described just to pass in time-domain resource with the presence or absence of the frequency domain resource transmitted needed for first business data packet；

Second judging unit, if transmission first business data packet be present for described just pass in time-domain resource selected Required and unappropriated frequency domain resource, determine the first biography time-domain resource and second of first business data packet of selection The transfer resource of business data packet does not collide；Otherwise, it determines the first biography time domain money of first business data packet of selection Source and the transfer resource of the second business data packet collide.

Wherein, the Second processing module includes：

First processing submodule, if the biography of the first biography time-domain resource and the second business data packet for the first business data packet Defeated resource does not collide, before the resource of the control information reaches, determines the first biography frequency of first business data packet The re-transmission time-domain resource of domain resource and first business data packet and re-transmission frequency domain resource.

Wherein, the selecting module includes：

3rd selection submodule, for selecting just to pass time-domain resource for first business data packet and just passing frequency domain money Source.

The judging submodule includes：

3rd judging unit, the positional information for the transfer resource according to second business data packet judge selection Whether the just biography time-domain resource and just biography frequency domain resource are whole not with the position of the transfer resource of second business data packet It is identical；

4th judging unit, if the just biography time-domain resource and the just biography frequency domain resource and described second for selecting The position of the transfer resource of business data packet all differs, determine first business data packet first biography time-domain resource and just The transfer resource for passing frequency domain resource and the second business data packet does not collide；Otherwise, it determines first business data packet The transfer resource for just passing time-domain resource and just passing frequency domain resource and the second business data packet collides.

Wherein, the Second processing module includes：

Second processing submodule, if first biography time-domain resource and first biography frequency domain resource and second for the first business data packet The transfer resource of business data packet does not collide, before the resource of the control information reaches, determines first business The re-transmission time-domain resource and re-transmission frequency domain resource of packet.

The above-mentioned technical proposal of the present invention at least has the advantages that：

It is first when first terminal judges to need to carry out resource selection in the resource selection method and device of the embodiment of the present invention Selection just passes resource, according to the other-end (second received before the resource for carrying the control information for just passing resource reaches Terminal) control information SA judge whether the first biography resource of selection collides, if just pass resource collide if select again Select and just pass resource；If not detecting collision just passing resource, retransmission resource is determined again before just passing resource and reaching；So as to The resource gravity treatment probability caused by resource collision is reduced, and then reduces the electric quantity consumption caused by resource gravity treatment.

Brief description of the drawings

Fig. 1 represents the schematic diagram of the spontaneous selection resource of terminal in the prior art；

Fig. 2 represents the schematic diagram of base station auxiliary terminal progress resource selection in the prior art；

Fig. 3 represents the method exemplary plot of terminal progress resource selection in the prior art；

Fig. 4 represents the basic step flow chart for the resource selection method that the first embodiment of the present invention provides；

Fig. 5 represents the schematic diagram of the first case in the resource selection method that the first embodiment of the present invention provides；

When Fig. 6 represents the first biography of the first case and second case in the resource selection method that the first embodiment of the present invention provides The selection schematic diagram of domain resource；

Fig. 7 represents the schematic diagram of the second case in the resource selection method that the first embodiment of the present invention provides；

Fig. 8 represents the schematic diagram of the 3rd in the resource selection method that the first embodiment of the present invention provides；

Fig. 9 represents the first biography time-domain resource of the 3rd in the resource selection method that the first embodiment of the present invention provides Select schematic diagram；

Figure 10 represents the structural representation for the resource selection device that the second embodiment of the present invention provides；

Figure 11 represents the structural representation for the resource selection device that the third embodiment of the present invention provides.

Embodiment

To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool Body embodiment is described in detail.

First embodiment

As shown in figure 4, the first embodiment of the present invention provides a kind of resource selection method, including：

Step 401, it is first for first business data packet selection according to the information of the first business data packet of first terminal Pass resource and the resource for carrying the control information for just passing resource；

Step 402, before the resource of the control information reaches, the first biography resource of first business data packet is detected Whether collided with the transfer resource of the second business data packet of second terminal；Wherein, the biography of second business data packet Defeated resource includes the first biography resource and/or retransmission resource of second business data packet；

Step 403, if the transfer resource of the first biography resource and the second business data packet of the first business data packet collides, Before the resource of the control information reaches, select just to pass resource and/or for taking for first business data packet again Resource and the first biography resource that reselects of detection with the control information for just passing resource whether the second industry with second terminal The transfer resource of business packet collides；

Step 404, if the transfer resource of the first biography resource and the second business data packet of the first business data packet does not touch Hit, before the resource of the control information reaches, determine the transfer resource of first business data packet；Wherein, described The transfer resource of one business data packet includes the first biography resource and/or retransmission resource of the first business data packet.

In embodiments of the invention, when first terminal judges to need to carry out resource selection as the first business data packet, first The first biography resource of the first business data packet is selected according to the time slot state information of maintenance；And carrying the first of the first business data packet Before resource (SA resources) arrival for passing the control information of resource information, judged just to pass money according to the SA information of the other-end of reception Whether source collides.Do not collided if just passing resource, the selection re-transmission before carrying the first SA for passing resource information and sending Resource, and first biography resource and/or retransmission resource that first terminal determines are carried in the SA sent；If just passing resource to collide, Just biography resource is then selected for business data packet according to the time slot state information of maintenance again, until carrying first biography resource information SA resources just pass resource collision without detection or meet that other impose a condition before reaching when, the first biography to business data packet is terminated as Whether resource, which collides, is judged；Resource gravity treatment probability caused by so as to reduce resource collision, and then reduce because resource gravity treatment is made Into electric quantity consumption.

Specifically, in the above embodiment of the present invention, step 401 includes：

According to the transmission delay of the arrival time of the first business data packet of first terminal, first business data packet with And the time slot state information that first terminal is safeguarded, just pass resource and described for carrying for first business data packet selection Just pass the resource of the control information of resource information.

In the above embodiment of the present invention, when just passing resource for the selection of the first business data packet, it need to generally meet following bar Part：The time slot that the time slot state information selection safeguarded according to first terminal is not taken by other-end；And in the first business datum Time slot between the arrival time of bag and the arrival time of the first business data packet+transmission delay.For example, the first business data packet Arrival time be subframe 5, each subframe lengths are 1ms, and the transmission delay of the first business data packet is 100ms, then in subframe 5 It is that the selection of the first business data packet just passes the time-domain position (or just to pass time-domain resource) of resource and taken between subframe 105 The time-domain position of resource with the control information for just passing resource information.

Further, in the above embodiment of the present invention, step 402 includes：

Step 4021, before the resource of the control information reaches, the second terminal that second terminal is sent is received Control information, the positional information of the transfer resource of the second business data packet of second terminal is carried in the control information；

Step 4022, according to the positional information of the transfer resource of the second business data packet, first business datum is judged Whether the first biography resource of bag collides with the transfer resource of the second business data packet of second terminal.

In the embodiment of the present invention, what first terminal can select according to the control information SA that other-end is sent to judge it Just pass resource whether with the generation of the transfer resource of the business data packet (i.e. the second business data packet of second terminal) of other-end Collision.

Specifically, judge first business data packet first biography resource whether the second business data packet with second terminal Transfer resource collide and be divided into two kinds of situations：

In the case of the first, when first terminal is that the selection of the first business data packet just passes resource, simply determines and just pass money Time-domain position corresponding to source, i.e., just pass time-domain resource；In the case of second, first terminal is that the selection of the first business data packet just passes During resource, both it had been determined that time-domain position corresponding to just passing resource further defined and has just passed frequency domain position corresponding to resource, i.e., when just passing Domain resource and just biography frequency domain resource.

It is described in detail separately below to how to judge just whether biography resource collides in above-mentioned two situations：

The first situation：

It only have selected when selecting for first business data packet and just pass resource and just pass time-domain resource, accordingly, step 4022 include：

I.e. when the first biography resource of selection, which is only to determine, just passes time-domain position corresponding to resource, collision judgment mode is： Before carrying SA time-domain positions (such as subframe position, time slot position) arrival for just passing resource, sent according to the other-end received SA be judged as just pass resource selection time-domain position in whether still suffer from send the first business data packet required for frequency domain money Source；If still suffered from the time-domain position send the first business data packet required for frequency domain resource when if think just pass resource do not have Collision, collided otherwise it is assumed that just passing resource.

Accordingly, in the case of the first, step 404 includes：

I.e. in the first scenario, (reached before carrying the SA for just passing resource and sending in the resource of the control information Before), in addition to time domain corresponding to retransmission resource to be determined and frequency domain position, it is also predefined and just passes frequency domain position corresponding to resource Put.

Second of situation：

Select just to pass time-domain resource for first business data packet and just pass frequency domain resource, corresponding step 4022 is wrapped Include：

I.e. when the first biography resource of selection had not only included time-domain position but also including frequency domain position, collision judgment mode is：Taking Before band just passes SA time-domain positions (such as subframe position, time slot position) arrival of resource, sent according to the other-end received SA judges that the time-frequency location of the first biography resource of selection is identical with other UE first biographies selected or retransmission resource " part " or " whole " When, then it is assumed that just pass resource and collide.Do not collided otherwise, it determines just passing resource.

Accordingly, in the case of second, step 404 includes：

I.e. in the latter case, (reached before carrying the SA for just passing resource and sending in the resource of the control information Before), it is only necessary to determine time domain corresponding to retransmission resource and frequency domain position again.

It should be noted that the reason such as processing time because of actual hardware, " in the control in the step 404 in the application Before the resource of information processed reaches, the transfer resource of first business data packet is determined " do not limit and can only just pass data Retransmission resource is selected in the previous chronomere (such as subframe, time slot) that the SA of bag association is sent, can be according to actual conditions To determine the time of specifically chosen retransmission resource, such as：If the assembling of SA information needs to take 3 chronomeres, then can be in SA The 4th subframe before transmission selects retransmission resource, is not especially limited herein.

To sum up, first select just to pass money when first terminal judges to need to carry out resource selection in the above embodiment of the present invention Source, the first biography money of selection is judged according to the control information SA of the other-end (second terminal) received before just passing resource and reaching Whether source collides, and is reselected if just passing resource and colliding and just passes resource；If do not detected just passing resource To collision, then retransmission resource is determined again before just passing resource and reaching；So as to reduce the resource gravity treatment probability caused by resource collision, And then reduce the electric quantity consumption caused by resource gravity treatment.

For clearer description resource selection method provided in an embodiment of the present invention, with reference to specific embodiment to this The resource selection method that inventive embodiments provide is described in detail：

First case

The SA and packet content of the first business data packet association of first terminal transmission are located at identical subframe and (taken Band, which just passes the SA of resource and just passes resource, is located at identical subframe).Maximum portable instruction data resource information number in SA For 3.Indicate the transmission version of the packet in the running time-frequency resource position shared by present sub-frame in each business data packet association SA Shared time-frequency location is as shown in Figure 5 during the re-transmission of confidence breath and the packet.System bandwidth is 10MHz (corresponding 50 PRB), SA resource pools are located at the both sides (accounting for 2MHz, corresponding 10 PRB, i.e., each 5 PRB up and down altogether) of frequency band, and each SA sends and accounted for With a PRB, data resource pools take among 8MHz, data send the PRB resource sizes needed to use and positional information by SA is indicated or protocol conventions.

When a new business data packet reaches, terminal judges no resource to send newly arrived packet.If number Arrival time according to bag is subframe 5, and each subframe lengths are 1ms, and the first biography that packet needs adds number of retransmissions (both just to pass 1 for 3 It is secondary, retransmit 2 times).The transmission delay requirement of packet is 100ms.

(time domain) resource is just passed for business data packet selection between subframe 5 arrives the subframe of subframe 105, if during the first biography of selection It is subframe 37 that domain resource, which corresponds to subframe, as shown in Figure 6.

Before the arrival of subframe 37, it is judged as the first biography resource of packet selection according to the other-end of reception transmission SA information Whether collide.The judgment criterion of collision is：Carrying the SA time-domain positions (such as subframe position, time slot position) of just biography resource Before arrival, it is judged as still suffering from and can sending in the just time-domain position of biography resource selection according to other UE received SA sent Then think that just passing resource does not collide during the required frequency domain resource of packet, collided otherwise it is assumed that just passing resource.If Before the arrival of subframe 37, SA information is sent according to the other-end of reception and does not judge just to pass resource collision.

If the group bag time of SA information is 0, then terminate (i.e. subframe 37 starts) position in subframe 36, it is determined that just passing resource pair The frequency domain position answered, and time domain corresponding to retransmission resource and frequency domain position.If divided for the 8MHz for sending business data packet For 4 son (frequency) bands, determine that subband 2,3 can select in subframe 37 according to other UE of reception SA sent, random selection Band 3 is just frequency domain resource corresponding to biography resource.If the SA information sent according to other UE of reception, in 37~subframe of subframe 105 Between, be divided into for the time-domain position and frequency domain position of the selection of retransmission resource twice, the time-domain position of selection on subband 1~4：Subframe 85th, subframe 96, the frequency domain position of selection are respectively：Subband 1 and subband 3.

So as to carry the first biography sent for packet and retransmission resource position in SA corresponding to the packet of the transmission of subframe 37 Confidence is ceased, and SA random selections are sent in SA resource pools on PRB5.Carried in SA corresponding to the packet that subframe 85 is sent and be The retransmission resource positional information twice that packet is sent, SA random selections are sent in SA resource pools on PRB3.Sent out in subframe 96 The last time retransmission resource positional information sent for packet is carried in SA corresponding to the packet sent, SA is randomly choosed in SA Sent in resource pool on PRB8.

Second case

The SA and packet content of the first business data packet association of first terminal transmission are located at different subframes.In SA Maximum portable instruction data resource information number is 2.The SA of each business data packet association is before business data packet Send, indicate that the running time-frequency resource positional information that the packet just passes and re-transmission is corresponding is as shown in Figure 7 in SA.

When a new business data packet reaches, UE judges no resource to send newly arrived packet.If data The arrival time of bag is subframe 5, and each subframe lengths are 1ms, and the first biography that packet needs adds number of retransmissions (both just to pass 1 for 2 It is secondary, retransmit 1 time).The transmission delay requirement of packet is 100ms.

If system bandwidth is 10MHz, 2Mhz is used to send SA, and 8MHz is used to send business data packet (as shown in Figure 5).If 2MHz for sending SA is divided into 10 SA (frequency) bands, and the 8Mhz for sending business data packet is divided into 4 data (frequency) band.The SA sent according to other UE of reception, just passed for business data packet selection between subframe 5 arrives the subframe of subframe 105 Time-domain resource, if the first biography time-domain resource of selection corresponds to subframe as subframe 37, as shown in Figure 6.It is industry between data subbands 1~4 Being engaged in, packet selection is first to pass frequency domain resource, if the first biography frequency domain resource of selection is subband 2.It is SA between subframe 5 arrives subframe 37 First biography and retransmit selection and send resource, it is respectively subframe 23, subframe 30 to be set to the first biography of SA selections and the time-domain resource of re-transmission, Frequency domain resource is just passed and retransmitted for SA selections in the subband of SA resource pools 1~10, is set to the first biography of SA selections and the frequency domain of re-transmission Resource is respectively subband 5, subband 7.

Before the arrival of subframe 23, it is judged as the first biography resource of packet selection according to the other-end of reception transmission SA information Whether collide.The judgment criterion of collision is：According to the time-domain position (such as subframe position, time slot position) in just biography SA resources The SA received before arrival judge the business data packet of UE selections just pass time-frequency location and other UE selection of resource first biography or When retransmission resource " part " or identical " whole ", then it is assumed that just pass resource and collide.It is located at subframe 15 and receives terminal B transmissions SA information, instruction terminal B business data packets send take retransmission resource it is identical with terminal A first biography resource, then judge end Hold A first biography resource collision.Now need to redefine, terminal A, which is sent, just passes resource used in business data packet.According to weight Resource location is just passed used in the transmission business data packet newly selected, the running time-frequency resource that terminal A sends selected by SA can weigh New to determine to redefine, assume to collide in first biography resource corresponding to business data packet in the present embodiment is again When business data packet sends just biography resource, SA first biography and retransmission resource are also reselected.

The SA sent according to the other-end of reception, between subframe 15 arrives the subframe of subframe 105 for business data packet again Selection just passes time-domain resource, is business between data subbands 1~4 if the first biography time-domain resource of selection corresponds to subframe as subframe 45 Packet, which reselects, just passes frequency domain resource, if the first biography frequency domain resource of selection is subband 3.It is between subframe 45 in subframe 15 SA first biography and re-transmission selection send resource, and it is respectively subframe 26, subframe to be set to the first biography of SA selections and the time-domain resource of re-transmission 35, frequency domain resource is just passed and retransmitted for SA selections between SA subbands 1~10, is set to the first biography of SA selections and the frequency domain resource of re-transmission Respectively subframe 3, subframe 9.Before if subframe 25 reaches, send SA information according to other UE of reception and do not judge business data packet Just pass resource collision.

If the group bag time of SA information is 1, then terminate (i.e. subframe 25 starts) position in subframe 24, retransmit business data packet Time domain corresponding to retransmission resource and frequency domain position.If the retransmission resource time-domain position that the SA sent according to other UE of reception is selected For：Subframe 81, the frequency domain position of selection are respectively：Subband 2.

Then the first biography sent for packet and retransmission resource position are carried in SA corresponding to the packet that subframe 26 is sent Confidence ceases.The retransmission resource positional information sent for packet is carried in SA corresponding to the packet that subframe 35 is sent.

3rd

The SA and packet content of the association of first business data packet transmission are located at different subframes.Maximum can carry in SA Instruction data resource information number be 2.The SA of each business data packet association is sent before business data packet, SA middle fingers Show that the running time-frequency resource positional information that the packet just passes and re-transmission is corresponding is as shown in Figure 8.System bandwidth is 10MHz (corresponding 50 Individual PRB), SA resource pools are located at the both sides (accounting for 2MHz, corresponding 10 PRB, i.e., each 5 PRB up and down altogether) of frequency band, and each SA is sent A PRB is taken, data resource pools take middle 8MHz, and data sends the PRB resource sizes and positional information needed to use By SA instructions or protocol conventions.

The SA sent according to other UE of reception, just passed for business data packet selection between subframe 5 arrives the subframe of subframe 105 Time-domain resource, if the first biography time-domain resource of selection corresponds to subframe as subframe 87, as shown in Figure 9.If the first biography frequency domain resource of selection For the PRB6-PRB15 in data resource pools (including 40 PRB).In order to reduce the first biography resource of selection and other UE SA middle fingers Show the probability of resource collision, the time domain scale that SA resource selections are set in the present embodiment is：From packet arrival time to min (just pass resource time-domain position, packet arrival time+1/2* transmission delays requirement) between, i.e., from subframe 5 to subframe min (87, Between 5+50)=55 select SA first retransmission resource, be set to SA selection first biography and re-transmission time-domain resource be respectively subframe 23, Subframe 30, frequency domain resource is just passed and retransmitted for SA selections in 1~10PRB of SA resource pools, be set to first biography and the re-transmission of SA selections Frequency domain resource be respectively PRB 5, PRB 7.

Before the arrival of subframe 23, it is judged as the first biography resource of packet selection according to the other-end of reception transmission SA information Whether collide.The judgment criterion of collision is：According to the time-domain position (such as subframe position, time slot position) in just biography SA resources It is first that the SA received before arrival judges that the time-frequency location that resource is passed at the beginning of the business data packet that terminal selects selects with other-end When biography or retransmission resource " part " or identical " whole ", then it is assumed that just pass resource and collide.It is located at subframe 15 and receives terminal B The SA information of transmission, the retransmission resource that instruction terminal B business data packets send occupancy is identical with terminal A first biography resource, then sentences Disconnected terminal A first biography resource collision.Now need to redefine, terminal A, which is sent, just passes resource used in business data packet.Root According to resource location is just passed used in the transmission business data packet reselected, the running time-frequency resource that terminal A sends selected by SA can It can not also be redefined with redefining, assume to collide again in the first resource that passes corresponding to business data packet in the present embodiment Newly sent for business data packet when just passing resource, if with the SA resources of selection can if use if do not reselect SA just Biography and retransmission resource.

The SA sent according to the other-end of reception, between subframe 15 arrives the subframe of subframe 105 for business data packet again Selection just passes time-domain resource, if the first biography time-domain resource of selection corresponds to subframe as subframe 45, the first biography frequency domain resource of selection for PRB3-PRB12 in data resource pools.Because the SA resources selected originally can be still continuing with, therefore do not reselecting SA resources.Before if subframe 23 reaches, SA information is sent according to the other-end of reception and does not judge that business data packet just passes resource Collision.

If the group bag time of SA information is 1, then terminates (i.e. subframe 22 starts) position in subframe 21 and determine business data packet Time domain corresponding to re-transmission and frequency domain position.If the retransmission resource time-domain position that the SA sent according to the other-end of reception is selected For：Subframe 81, the frequency domain position of selection are respectively：PRB21-PRB30 in data resource pools.

Then, the first biography sent for packet and retransmission resource position are carried in SA corresponding to the packet that subframe 23 is sent Confidence ceases.The retransmission resource positional information sent for packet is carried in SA corresponding to the packet that subframe 30 is sent.

Second embodiment

In order to preferably realize above-mentioned purpose, as shown in Figure 10, the second embodiment of the present invention also provides a kind of resource choosing Device is selected, including：

Selecting module 101, it is first business datum for the information of the first business data packet according to first terminal Bag selection just passes resource and the resource for carrying the control information for just passing resource；

Detection module 102, for before the arrival of the resource of the control information, detecting first business data packet Just pass whether resource collides with the transfer resource of the second business data packet of second terminal；Wherein, the second business number Include the first biography resource and/or retransmission resource of second business data packet according to the transfer resource of bag；

First processing module 103, if the transmission of the first biography resource and the second business data packet for the first business data packet Resource collides, and before the resource of the control information reaches, selects just to pass money for first business data packet again Source and/or for carry the control information for just passing resource resource and the first biography resource that reselects of detection whether with second The transfer resource of second business data packet of terminal collides；

Second processing module 104, if the transmission of the first biography resource and the second business data packet for the first business data packet Resource does not collide, before the resource of the control information reaches, determines the transfer resource of first business data packet； Wherein, the transfer resource of first business data packet includes the first biography resource and/or retransmission resource of the first business data packet.

Specifically, in the second embodiment of the present invention, the selecting module includes：

First choice submodule, arrival time, first industry for the first business data packet according to first terminal The time slot state information that the transmission delay and first terminal of business packet are safeguarded, for the first biography of first business data packet selection Resource and the resource for carrying the control information for just passing resource.

Specifically, in the second embodiment of the present invention, the detection module includes：

The judging submodule includes：

Specifically, Second processing module includes described in the second embodiment of the present invention：

Specifically, selecting module includes described in the second embodiment of the present invention：

The judging submodule includes：

The resource selection device that second embodiment of the invention provides is first when first terminal judges to need to carry out resource selection Selection just passes resource, according to the other-end (second received before the resource for carrying the control information for just passing resource reaches Terminal) control information SA judge whether the first biography resource of selection collides, if just pass resource collide if select again Select and just pass resource；If not detecting collision just passing resource, retransmission resource is determined again before just passing resource and reaching；So as to The resource gravity treatment probability caused by resource collision is reduced, and then reduces the electric quantity consumption caused by resource gravity treatment.

It should be noted that the resource selection device that the second embodiment of the present invention provides is to apply above-mentioned first embodiment The resource selection device of the resource selection method of offer, then all embodiments of above-mentioned resource selection method be applied to the resource Selection device, and can reach same or analogous beneficial effect.

3rd embodiment

In order to preferably realize above-mentioned purpose, as shown in figure 11, the third embodiment of the present invention also provides a kind of resource choosing Device is selected, the resource selection device includes：Processor 100；The memory being connected by EBI with the processor 100 120, and the transceiver 110 being connected by EBI with processor 100；The memory is used to store the processor Used program and data when performing operation；Data message or pilot tone are sent by the transceiver 110, also pass through institute State transceiver 110 and receive down control channel；When processor calls and performed the program and data stored in the memory When, realize following functional module：

Wherein, in Fig. 10, bus architecture can include the bus and bridge of any number of interconnection, specifically by processor The various circuits for the memory that 100 one or more processors represented and memory 120 represent link together.Bus architecture Various other circuits of such as ancillary equipment, voltage-stablizer and management circuit or the like can also be linked together, these All it is it is known in the art, therefore, no longer it is described further herein.EBI provides interface.Transceiver 110 Can be multiple element, i.e., including transmitter and transceiver, there is provided for what is communicated over a transmission medium with various other devices Unit.Processor 100 is responsible for bus architecture and common processing, and memory 120 can store processor 100 and perform behaviour Used data when making.

Processor 100 is responsible for bus architecture and common processing, and memory 920 can store processor 100 and hold Used data during row operation.

It should be noted that the third embodiment of the present invention provides what resource selection device provided with above-mentioned second embodiment Resource selection device is corresponding, therefore all embodiments of the resource selection method of above-mentioned first embodiment offer are applied to the channel Transmitting device, and can reach same or analogous beneficial effect.

Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

A kind of 1. resource selection method, it is characterised in that including：

According to the information of the first business data packet of first terminal, resource and use are just passed for first business data packet selection In the resource for carrying the control information for just passing resource；

Before the resource of the control information reaches, detect first business data packet first biography resource whether with second eventually The transfer resource of second business data packet at end collides；Wherein, the transfer resource of second business data packet includes institute State the first biography resource and/or retransmission resource of the second business data packet；

If the transfer resource of the first biography resource and the second business data packet of the first business data packet collides, in the control letter Before the resource of breath reaches, just pass resource for first business data packet selection again and/or provided for carrying described just pass The first biography resource that the resource of the control information in source and detection reselect whether the biography with the second business data packet of second terminal Defeated resource collides；

If the transfer resource of the first biography resource and the second business data packet of the first business data packet does not collide, in the control Before the resource of information reaches, the transfer resource of first business data packet is determined；Wherein, first business data packet Transfer resource includes the first biography resource and/or retransmission resource of the first business data packet.
2. resource selection method according to claim 1, it is characterised in that according to the first business data packet of first terminal Information, for first business data packet selection just pass resource the step of, including：

According to the arrival time of the first business data packet of first terminal, the transmission delay of first business data packet and The time slot state information of one terminal maintenance, it is that first business data packet selection just passes resource and for carrying the just biography The resource of the control information of resource.
3. resource selection method according to claim 1, it is characterised in that reach it in the resource of the control information Before, whether the first biography resource for detecting first business data packet is sent out with the transfer resource of the second business data packet of second terminal The step of raw collision, including：

Before the resource of the control information reaches, the control information for the second terminal that second terminal is sent, institute are received State the positional information of the transfer resource for the second business data packet that second terminal is carried in control information；

According to the positional information of the transfer resource of the second business data packet, judging the first biography resource of first business data packet is The transfer resource of no the second business data packet with second terminal collides.
4. resource selection method according to claim 3, it is characterised in that described to be selected for first business data packet The step of just passing resource includes：

Select just to pass time-domain resource for first business data packet；

The positional information of the transfer resource according to the second business data packet, judge the first biography money of first business data packet The step of whether source collides with the transfer resource of the second business data packet of second terminal, including：

According to the positional information of the transfer resource of second business data packet judge selection it is described just pass time-domain resource in be It is no the frequency domain resource transmitted needed for first business data packet to be present；

If there is frequency transmit needed for first business data packet and unappropriated in described just pass in time-domain resource of selection Domain resource, determine the transfer resource of first biography time-domain resource and the second business data packet of first business data packet of selection not Collide；Otherwise, it determines the biography of the first biography time-domain resource of first business data packet of selection and the second business data packet Defeated resource collides.
5. resource selection method as claimed in claim 4, it is characterised in that if the first biography resource of first business data packet Do not collided with the transfer resource of the second business data packet, before the resource of the control information reaches, determine described the The step of transfer resource of one business data packet, including：

If the transfer resource of the first biography time-domain resource and the second business data packet of the first business data packet does not collide, described Before the resource of control information reaches, the first biography frequency domain resource of first business data packet and the first business number are determined According to the re-transmission time-domain resource and re-transmission frequency domain resource of bag.
6. resource selection method according to claim 3, it is characterised in that described to be selected for first business data packet The step of just passing resource includes：

Select just to pass time-domain resource for first business data packet and just pass frequency domain resource；

The positional information of the transfer resource according to the second business data packet, judge the first biography money of first business data packet The step of whether source collides with the transfer resource of the second business data packet of second terminal, including：

According to the positional information of the transfer resource of second business data packet judge selection it is described just pass time-domain resource and just Pass whether frequency domain resource all differs with the position of the transfer resource of second business data packet；

If the described of selection just passes time-domain resource and the transfer resource for just passing frequency domain resource and second business data packet Position all differ, determine the first biography time-domain resource of first business data packet and just pass frequency domain resource and the second business The transfer resource of packet does not collide；Otherwise, it determines the first biography time-domain resource of first business data packet and just biography frequency The transfer resource of domain resource and the second business data packet collides.
7. resource selection method according to claim 6, it is characterised in that if the first biography money of first business data packet Source and the transfer resource of the second business data packet do not collide, before the resource of the control information reaches, it is determined that described The step of transfer resource of first business data packet, including：

If the first biography time-domain resource of the first business data packet and the just transfer resource of biography frequency domain resource and the second business data packet are not Collide, the control information resource reach before, determine first business data packet re-transmission time-domain resource and Retransmit frequency domain resource.
A kind of 8. resource selection device, it is characterised in that including：

Selecting module, for the information of the first business data packet according to first terminal, selected for first business data packet Just pass resource and the resource for carrying the control information for just passing resource；

Detection module, for before the arrival of the resource of the control information, detecting the first biography money of first business data packet Whether source collides with the transfer resource of the second business data packet of second terminal；Wherein, second business data packet Transfer resource includes the first biography resource and/or retransmission resource of second business data packet；

First processing module, if occurring for the first biography resource of the first business data packet and the transfer resource of the second business data packet Collision, before the resource of the control information reaches, select just to pass resource and/or use for first business data packet again In the resource and the first biography resource that reselects of detection for carrying the control information for just passing resource whether the with second terminal The transfer resource of two business data packets collides；

Second processing module, if the transfer resource for the first biography resource and the second business data packet of the first business data packet is not sent out Raw collision, before the resource of the control information reaches, determine the transfer resource of first business data packet；Wherein, institute Stating the transfer resource of the first business data packet includes the first biography resource and/or retransmission resource of the first business data packet.
9. resource selection device according to claim 8, it is characterised in that the selecting module includes：

First choice submodule, arrival time, the first business number for the first business data packet according to first terminal The time slot state information safeguarded according to the transmission delay and first terminal of bag, resource is just passed for first business data packet selection And for carrying the resource of the control information for just passing resource.
10. resource selection device according to claim 8, it is characterised in that the detection module includes：

Receiving submodule, for before the arrival of the resource of the control information, receive second terminal transmission described second to be whole The control information at end, the positional information of the transfer resource of the second business data packet of second terminal is carried in the control information；

Judging submodule, for the positional information of the transfer resource according to the second business data packet, judge the first business number Whether collided according to the first biography resource of bag with the transfer resource of the second business data packet of second terminal.
11. resource selection device according to claim 10, it is characterised in that the selecting module includes：

Second selection submodule, for selecting just to pass time-domain resource for first business data packet；

The judging submodule includes：

First judging unit, described in the positional information for the transfer resource according to second business data packet judges selection Just pass in time-domain resource with the presence or absence of the frequency domain resource transmitted needed for first business data packet；

Second judging unit, if existing for described just pass in time-domain resource selected needed for transmission first business data packet And unappropriated frequency domain resource, determine the first biography time-domain resource and the second business of first business data packet of selection The transfer resource of packet does not collide；Otherwise, it determines selection first business data packet first biography time-domain resource with The transfer resource of second business data packet collides.
12. resource selection device as claimed in claim 11, it is characterised in that the Second processing module includes：

First processing submodule, if being provided for the first biography time-domain resource of the first business data packet and the transmission of the second business data packet Source does not collide, before the resource of the control information reaches, determines the first biography frequency domain money of first business data packet The re-transmission time-domain resource of source and first business data packet and re-transmission frequency domain resource.
13. resource selection device according to claim 10, it is characterised in that the selecting module includes：

3rd selection submodule, for selecting just to pass time-domain resource for first business data packet and just passing frequency domain resource；

The judging submodule includes：

3rd judging unit, described in the positional information for the transfer resource according to second business data packet judges selection Just pass time-domain resource and just whether biography frequency domain resource all differs with the position of the transfer resource of second business data packet；

4th judging unit, if for the just biography time-domain resource and the just biography frequency domain resource and second business that select The position of the transfer resource of packet all differs, and determines the first biography time-domain resource of first business data packet and just passes frequency The transfer resource of domain resource and the second business data packet does not collide；Otherwise, it determines the first biography of first business data packet Time-domain resource and the first transfer resource for passing frequency domain resource and the second business data packet collide.
14. resource selection device according to claim 13, it is characterised in that the Second processing module includes：

Second processing submodule, if for the first biography time-domain resource of the first business data packet and first biography frequency domain resource and the second business The transfer resource of packet does not collide, before the resource of the control information reaches, determines first business datum The re-transmission time-domain resource and re-transmission frequency domain resource of bag.