CN106686728A - Time-frequency resource allocation method and device - Google Patents

Time-frequency resource allocation method and device Download PDF

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Publication number
CN106686728A
CN106686728A CN201510751147.9A CN201510751147A CN106686728A CN 106686728 A CN106686728 A CN 106686728A CN 201510751147 A CN201510751147 A CN 201510751147A CN 106686728 A CN106686728 A CN 106686728A
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CN
China
Prior art keywords
frequency resource
direct writing
time
target group
running time
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CN201510751147.9A
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Chinese (zh)
Inventor
邓云
Original Assignee
展讯通信(上海)有限公司
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Application filed by 展讯通信(上海)有限公司 filed Critical 展讯通信(上海)有限公司
Priority to CN201510751147.9A priority Critical patent/CN106686728A/en
Publication of CN106686728A publication Critical patent/CN106686728A/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource
    • H04W72/0446Wireless resource allocation where an allocation plan is defined based on the type of the allocated resource the resource being a slot, sub-slot or frame
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
    • H04W72/04Wireless resource allocation
    • H04W72/10Wireless resource allocation where an allocation plan is defined based on priority criteria

Abstract

The invention provides a time-frequency resource allocation method and device. The method comprises the following steps: receiving N resource pools for the scheduled resource allocation method and issued through base station configuration, N being an integer and N>=2; detecting whether downward control information is received; when detecting the downward control information, obtaining position information of time-frequency resources in the downward control information; according to the position information of time-frequency resources, determining N time-frequency resources for transmitting direct services in the N time-frequency resources, the time-frequency resources being in one-to-one correspondence with the resource pools; and allocating the obtained N time-frequency resources to the direct services corresponding to target groups. The method and device can transmit the direct services to other target groups in the process of transmitting the direct services to one target group, thereby reducing time delay of transmission of the direct services.

Description

Distribution method of time frequency resources and device

Technical field

The present invention relates to wireless communication field, more particularly to a kind of distribution method of time frequency resources and device.

Background technology

Device-to-device (Device to Device, D2D) communicates, and is also called direction communication, and which can be Under network-based control, between two reciprocity equipment, short distance biography is directly carried out without the need for transmitting by base station The technology directly communicated by reuse pattern Radio Resource between defeated, permission terminal;Which can not also Under the control of a network, directly led to using the Radio Resource being pre-configured between two reciprocity equipment The technology of letter.

D2D based on Cellular Networks communicates, and is referred to as to close on service (Proximity Service, ProSe). In existing LTE protocol, user terminal (User Equipment, UE) A and user terminal B can lead to Crossing PC5 interfaces carries out direction communication.

When direction communication is carried out, there is two spike-type cultivars distribution method in prior art:One kind is scheduling of resource Distribution method, is configured by dedicated signaling by base station;One kind is automatic resource system of selection, and base station can be with Carried for UE by system message or wireless heterogeneous networks (Radio Resource Control, RRC) signaling For the resource pool for direction communication, UE selects the resource for direction communication from resource pool.

However, in existing scheme, base station controls (Sidelink Control, SC) in a direct link In cycle, only distribute a transfer resource for transmission UE (i.e. for the UE of direct writing data is activation), Or only allow transmission UE to automatically select a transfer resource.Transmitting UE can only be to one within a SC cycle Individual target group sends immediate data.Each target group can include one or more UE, when target group includes During multiple UE, UE is transmitted identical to the data that all UE in the target group send.

When transmitting UE sides and there is the direct writing sent to multiple target groups, due within the SC cycle Immediate data can only be sent to a target group, the direct writing of other target groups can only wait other SC all Phase sends, and there is a problem of that direct writing propagation delay time is larger.

The content of the invention

When what the present invention was solved is that transmission UE sides have multiple direct writings, direct writing transmission how is reduced Time delay problem.

To solve above-mentioned technical problem, the embodiment of the present invention provides a kind of distribution method of time frequency resources, including:

The N number of resource pool for scheduling resource distributing method of base station configuration distributing is received, N is integer, And N >=2;

Detect whether to receive descending control signaling;

When the descending control signaling is detected, the running time-frequency resource in the acquisition descending control signaling Positional information;

According to the positional information of the running time-frequency resource, determined in N number of resource pool respectively it is N number of for The running time-frequency resource of transmission direct writing, the running time-frequency resource are corresponded with the resource pool;

Give target group corresponding direct writing the N number of time-frequency resource allocating for getting.

Optionally, the number of the target group be N, it is described by the N number of time-frequency resource allocating for getting to The corresponding direct writing of target group, including:According to the highest of each self-corresponding direct writing of the target group N number of running time-frequency resource is respectively allocated to N number of target group pair by priority order from high to low successively The direct writing answered.

Optionally, the number of the target group be M, it is described by the N number of time-frequency resource allocating for getting to The corresponding direct writing of target group, also includes:As M > N, M target group is obtained each self-corresponding The limit priority of direct writing;The highest that N number of running time-frequency resource is respectively allocated to direct writing is excellent The corresponding direct writing of first level highest top n target group.

It is optionally, described to give target group corresponding direct writing the N number of time-frequency resource allocating for getting, Including:Subframe corresponding to N number of running time-frequency resource is respectively allocated to into the target group corresponding directly Business.

Optionally, the distribution method of time frequency resources also includes:It is allocated in a sub- frame in when detecting To multiple target groups multiple direct writings when, then the subframe is distributed to into one of them comprising preferential The target group that level highest direct writing is located carries out direct writing transmission.

The embodiment of the present invention additionally provides another kind of distribution method of time frequency resources, including:

Receive a resource pool for scheduling resource distributing method of base station configuration distributing;

Detect whether to receive descending control signaling;

When the descending control signaling is received, the running time-frequency resource in the acquisition descending control signaling Positional information;

According to the positional information of the running time-frequency resource, determine for passing in the resource pool for issuing One running time-frequency resource of defeated direct writing;

X is determined from X resource pool corresponding to automatic resource system of selection for transmitting direct writing Running time-frequency resource;

Give target group corresponding direct writing the X+1 time-frequency resource allocating for getting.

It is optionally, described to give target group corresponding direct writing the X+1 time-frequency resource allocating for getting, Including:According to the limit priority order from high to low of each self-corresponding direct writing of the target group, The X+1 running time-frequency resource is respectively allocated to into the corresponding direct writing of X+1 target group successively, wherein, According to determined by the scheduling resource distributing method, a time-frequency resource allocating includes priority most to one The direct writing of high direct writing place target group.

It is optionally, described to give target group corresponding direct writing the X+1 time-frequency resource allocating for getting, Including:Subframe corresponding to the X+1 running time-frequency resource is respectively allocated to into the target group corresponding straight Connect business.

Optionally, the distribution method of time frequency resources also includes:It is allocated in a sub- frame in when detecting To multiple target groups multiple direct writings when, then the subframe is distributed to into one of them comprising preferential The direct writing of level highest direct writing place target group carries out direct writing transmission.

Optionally, it is described that the subframe is distributed to into one of them direct writing institute comprising highest priority Direct writing transmission is carried out in target group, including:When the target group of the direct writing comprising highest priority Number for multiple, and the target group of distribution includes the scheduling resource distributing method institute really in the subframe During the corresponding target group of a fixed running time-frequency resource, the subframe is only according to the scheduling resource distributing method Determined by a running time-frequency resource carry out direct writing transmission.

A kind of time-frequency resource allocating device is embodiments provided, including:

First receiving unit, for receive base station configuration distributing for the N number of of scheduling resource distributing method Resource pool, N is integer, and N >=2;

First detector unit, for detecting whether receiving descending control signaling;

First acquisition unit, for when first detector unit detects the descending control signaling, Obtain the positional information of the running time-frequency resource in the descending control signaling;

First running time-frequency resource determining unit, for the running time-frequency resource got according to the first acquisition unit Positional information, determined in N number of resource pool respectively N respectively be used for transmit direct writing time-frequency money Source, the running time-frequency resource are corresponded with the resource pool;

First allocation unit, for the N number of time-frequency resource allocating for getting is corresponding directly to target group Business.

Optionally, first allocation unit is used for:When the number of the target group is N, according to institute The limit priority of each self-corresponding direct writing of target group order from high to low is stated, successively by the N Individual running time-frequency resource is respectively allocated to the corresponding direct writing of N number of target group.

Optionally, first allocation unit is additionally operable to:When the number of the target group is M, and M > During N, the limit priority of each self-corresponding direct writing of M target group of acquisition;By N number of time-frequency Resource is respectively allocated to the corresponding direct industry of limit priority highest top n target group of direct writing Business.

Optionally, first allocation unit is used for:By the subframe corresponding to N number of running time-frequency resource point The corresponding direct writing of the target group is not distributed to.

Optionally, first allocation unit is additionally operable to:When detect a sub- frame in be assigned to During multiple direct writings of multiple target groups, then the subframe is distributed to into one of them and include priority most The target group that high direct writing is located carries out direct writing transmission.

The embodiment of the present invention additionally provides another kind of time-frequency resource allocating device, including:

Second receiving unit, for receiving one for scheduling resource distributing method of base station configuration distributing Resource pool;

Second detector unit, for detecting whether receiving descending control signaling;

Second acquisition unit, for when the descending control signaling is received, obtaining the descending control The positional information of the running time-frequency resource in signaling;

Second running time-frequency resource determining unit, for the positional information according to the running time-frequency resource, under described Determine in the resource pool sent out for transmitting a running time-frequency resource of direct writing;

3rd running time-frequency resource determining unit, for from X resource pool corresponding to automatic resource system of selection The middle determination X running time-frequency resource for transmitting direct writing;

Second allocation unit, the X+1 time-frequency resource allocating for getting are corresponding straight to target group Connect business.

Optionally, second allocation unit is used for:According to each self-corresponding direct writing of the target group Limit priority order from high to low, the X+1 running time-frequency resource is respectively allocated to into X+1 successively The corresponding direct writing of individual target group, wherein, one according to determined by the scheduling resource distributing method Direct writing of the time-frequency resource allocating to a direct writing place target group comprising highest priority.

Optionally, second allocation unit is used for:By the subframe corresponding to the X+1 running time-frequency resource It is respectively allocated to the corresponding direct writing of the target group.

Optionally, second allocation unit is additionally operable to:When detect a sub- frame in be assigned to During multiple direct writings of multiple target groups, then the subframe is distributed to into one of them and include priority most The target group that high direct writing is located carries out direct writing transmission.

Optionally, second allocation unit is used for:When the target of the direct writing comprising highest priority The number of group is for multiple, and the target group of distribution includes the scheduling resource distributing method institute in the subframe It is determined that a running time-frequency resource corresponding target group when, the subframe is only distributed according to the scheduling resource Determined by method, a running time-frequency resource carries out direct writing transmission.

Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that:

The number of the resource pool for scheduling resource distributing method of base station configuration is multiple, each resource pool In comprising for transmitting the running time-frequency resource of direct writing.Transmission UE is according to the descending control letter for receiving Order, determines corresponding running time-frequency resource from multiple resource pools successively, thus may determine that multiple for transmitting The running time-frequency resource of direct writing, direct writing of multiple time-frequency resource allocatings to target group.Due to each Running time-frequency resource can transmit the corresponding direct writing of target group, when there is multiple running time-frequency resources, i.e., Direct industry can be transmitted to other target groups during to a target group transmission direct writing Business, such that it is able to reduce the time delay of direct writing transmission.

Further, when the running time-frequency resource for getting number N less than target group number M when, can be by N number of time-frequency resource allocating is corresponding directly to the limit priority highest top n target group of direct writing Business, is easy to base station for high priority direct writing and configures running time-frequency resource.

Base station is currently configured a resource pool, and transmission UE is according to the descending control signaling for receiving from described one A running time-frequency resource is determined in individual resource pool, and X is determined from the X resource pool for having stored for passing The running time-frequency resource of defeated direct writing, by X+1 time-frequency resource allocating to target group direct writing.Due to Each running time-frequency resource can transmit the direct writing of a target group, when there is X+1 running time-frequency resource, Can be during to a target group transmission direct writing, can be direct to the transmission of other target groups Business, so as to reduce the time delay of direct writing transmission.

Further, when detect there is multiple direct writings in same subframe when, only send priority most High direct writing, it is to avoid the feelings that direct writing in same subframe is clashed and normally cannot be sent Condition occurs.

Description of the drawings

Fig. 1 is a kind of flow chart of the distribution method of time frequency resources in the embodiment of the present invention;

Fig. 2 is the flow chart of another kind of distribution method of time frequency resources in the embodiment of the present invention;

Fig. 3 is a kind of structural representation of the time-frequency resource allocating device in the embodiment of the present invention;

Fig. 4 is the structural representation of another kind of time-frequency resource allocating device in the embodiment of the present invention.

Specific embodiment

From the foregoing, it will be observed that in existing scheme, base station within the SC cycle, is only transmission UE distribution one Secondary transfer resource, or only allow transmission UE to automatically select a transfer resource.UE is in a SC for transmission In cycle can only to target group send immediate data (number of times for sending immediate data can be it is multiple, But in a SC cycle, the data of transmission are identical).However, in actual applications, Jing is often in transmission UE There is to multiple target groups the scene for sending direct writing in side.Due to can only be to one within a SC cycle Target group sends immediate data, and the direct writing of other target groups can only wait other SC cycles to send.When When the number of the direct writing of presence is more, some of them direct writing may need to wait multiple SC cycles Can just be sent, there is a problem of that propagation delay time is larger.

In embodiments of the present invention, the number of the resource pool for scheduling resource distributing method of base station configuration For multiple, comprising for transmitting the running time-frequency resource of direct writing in each resource pool.UE is according to connecing for transmission The descending control signaling (Downlink Control Information, DCI) for receiving, the DCI are adopted SL-RNTI is scrambled, and determines corresponding running time-frequency resource successively, thus may determine that many from multiple resource pools The individual running time-frequency resource for transmitting direct writing, direct writing of multiple time-frequency resource allocatings to target group. As each running time-frequency resource can transmit the corresponding direct writing of target group, when there are multiple time-frequencies During resource, you can during to a target group transmission direct writing, can be to other target groups Transmission direct writing, such that it is able to reduce the time delay of direct writing transmission.

It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent from, with reference to Accompanying drawing is described in detail to the specific embodiment of the present invention.

The embodiment of the present invention gives a kind of distribution method of time frequency resources, with reference to Fig. 1, below by way of concrete step Suddenly it is described in detail.

Step S101, receiving base station configuration distributing is used for N number of resource pool of scheduling resource distributing method.

In being embodied as, for scheduling resource distributing method (Scheduled Resource Allocation) Direction communication, base station can be believed by wireless heterogeneous networks (Radio Resource Control, RRC) The direct link wireless network that configuration is applied to N number of resource pool (SC-CommTxConfig) is made to mark temporarily (SideLink Radio Network Temporary Identity, SL-RNTI) is known for direction communication, i.e., Base station is configured with N number of resource pool.

Base station by the N number of resource pool for having configured and can be applied to N number of resource pool in RRC signaling SL-RNTI be issued to transmission UE.UE is after the RRC signaling that base station issues is received for transmission, i.e., Would know that base station has been currently configured N number of resource pool, and the SL-RNTI correspondence N carried in RRC signaling Individual resource pool.

Transmission UE may refer to the UE that direct writing can be sent to other UE, receives transmission UE and sends out The UE groups of the direct writing sent can be referred to as target group, can include one or many in each UE group Individual UE.

In embodiments of the present invention, N is positive integer, and N >=2.What N be able to can be supported according to UE The maximum number of the target group of direct writing, the maximum number of the resource pool that base station can be distributed are carried out simultaneously Deng decision.

After the N number of resource pool for receiving base station configuration distributing, can be with execution step S102.

Step S102, detects whether to receive descending control signaling.

In embodiments of the present invention, detect whether that receiving descending control signaling can be:Detect whether to connect Receive and there is the descending control signaling scrambled by SL-RNTI.Have what is scrambled by SL-RNTI receiving During descending control signaling, can be with execution step S103;Otherwise, when be not detected by exist added by SL-RNTI During the descending control signaling disturbed, step S102 can be continued executing with.

Step S103, obtains the positional information of the running time-frequency resource in the descending control signaling.

In embodiments of the present invention, when the descending control signaling scrambled by SL-RNTI is detected the presence of, Whether the positional information of running time-frequency resource is included in may determine that the descending control signaling.When including time-frequency During the positional information of resource, you can obtain the positional information of running time-frequency resource, and execution step S104.

Step S104, it is according to the positional information of the running time-frequency resource, true respectively in N number of resource pool Fixed N number of running time-frequency resource for transmitting direct writing.

In embodiments of the present invention, after the positional information of running time-frequency resource is got, you can by running time-frequency resource Positional information apply in N number of resource pool, it is N number of for passing such that it is able to determine from N number of resource pool The running time-frequency resource of defeated direct writing.Correspond with resource pool for transmitting the running time-frequency resource of direct writing, Namely a running time-frequency resource can only be determined in a resource pool.

It should be noted that a running time-frequency resource can include the Physical Resource Block for being located at multiple subframes, such as Positioned at the Physical Resource Block of 4 subframes, these resources for a SC cycle to a target group or Individual target group sends direct writing.The SC cycles herein are corresponding to receive the descending control signaling subframe A SC cycle after the SC cycles, in the present invention, when transmission UE is determined according to descending control signaling Frequency resource was referred both in the next SC cycles after the descending control signaling subframe corresponding SC cycles Running time-frequency resource.In each resource pool correspondence SC cycle of oneself, the different resource pond corresponding SC cycles can With identical, it is also possible to different.

The N number of time-frequency resource allocating for getting is given target group corresponding direct writing by step S105.

After N number of running time-frequency resource is got, you can give N number of target group correspondence by N number of time-frequency resource allocating Direct writing, as each running time-frequency resource can transmit the corresponding direct writing of target group (one Individual or multiple direct writings), therefore can realize during to a target group transmission direct writing, Direct writing is transmitted to other target groups.

In being embodied as, the number for transmitting the running time-frequency resource that UE gets can be with the number phase of target group Deng.When the number of target group is N, one can be distributed for the corresponding direct writing of each target group Corresponding running time-frequency resource.By the running time-frequency resource being assigned to, the transmission of corresponding direct writing is carried out.

In embodiments of the present invention, when the number of target group is equal with the number of the running time-frequency resource for getting, The sequence of the limit priority of each self-corresponding direct writing of target group can be obtained, afterwards according to direct industry The sequence from high to low of the limit priority of business, it is successively that time-frequency resource allocating is corresponding directly to target group Business.UE knows the priority of direct writing.

For example, the number of target group be 3, a UE is only included in each target group, be followed successively by UE2, UE3 and UE4.The direct writing of UE2 is direct writing 1, and corresponding priority is the first priority; The corresponding direct writings of UE3 are direct writing 2 and direct writing 3, and 2 corresponding priority of direct writing is Second priority, 3 corresponding priority of direct writing are third priority;The direct writing of UE4 is straight Connect business 4 and direct writing 5,4 corresponding priority of direct writing is the first priority, direct writing 5 Corresponding priority is the second priority.First priority is limit priority, and third priority is minimum Priority.

Then in direct writing distribution running time-frequency resource corresponding for 3 UE, 3 UE are first obtained each right The limit priority sequence of the direct writing answered, can learn each self-corresponding direct writing of 3 UE most High priority is the first priority, the second priority and the first priority.Carrying out time-frequency resource allocating When, as UE2 is identical with the limit priority of the direct writing of UE4, therefore can be first UE2 point With running time-frequency resource, it is also possible to first distribute running time-frequency resource for UE4.Due to the highest of the direct writing of UE3 it is excellent First level is minimum in 3 UE, therefore is distributing time-frequency money for the corresponding direct writings of UE2 and UE4 Behind source, then distribute running time-frequency resource for the corresponding direct writings of UE3.

As can be seen here, multiple resource pools are configured by base station, transmission UE determines multiple from multiple resource pools Corresponding running time-frequency resource, direct writing of multiple time-frequency resource allocatings to target group.Due to each time-frequency Resource can transmit the corresponding direct writing of target group, when there is multiple running time-frequency resources, you can To a target group transmission direct writing during, direct writing is transmitted to other target groups, so as to The time delay of direct writing transmission can be reduced.

Corresponding to same target group, there may be multiple direct writings, and distribute to a target group Running time-frequency resource only one of which.In this case, for the different direct writings of same target group, can With the height according to priority, transmission priority highest direct writing of giving priority in arranging for, in running time-frequency resource still When having remaining, the direct writing that transmission priority can be arranged again to take second place, until the residue of running time-frequency resource Amount cannot meet the next direct writing of transmission.

For example, the number of the corresponding direct writings of UE5 is 5, and the priority of first direct writing is first Priority, highest priority;The priority of second direct writing is the second priority, and priority takes second place. By that analogy, the priority of the 5th direct writing is the 5th priority, and priority is minimum.Then for UE5 Direct writing be assigned with running time-frequency resource after, first direct writing of prioritised transmission.First direct writing Occupy 1/3 running time-frequency resource.Now, it is found that running time-frequency resource there remains 2/3, and second direct writing Need to only take 1/2 running time-frequency resource, and the 3rd direct writing need to take 1/3 running time-frequency resource.Now, The running time-frequency resource can transmit second direct writing while first direct writing is transmitted.Due to Running time-frequency resource only remaining 1/6, it is impossible to meet the demand of the 3rd direct writing of complete transmission, therefore can be with The data of the 3rd direct writing of hop.The 3rd remaining data of direct writing and the 4th and Five direct writings just can only can be transmitted when the next one SC cycles.

In embodiments of the present invention, it is also possible to there is number M of target group more than the running time-frequency resource for getting Number N situation.For example, number M=4 of target group, and running time-frequency resource number N=2 for getting, Now, the running time-frequency resource of distribution cannot meet the demand of all target groups.The reason for such case occur can Can be that transmission UE can only be while transmit direct writing for 2 target groups, it is also possible to which base station side only has 2 Individual running time-frequency resource is available.

When there is above-mentioned scene, can be by the direct industry of all target groups each self-corresponding limit priority The priority of business is compared, and the limit priority that N number of running time-frequency resource is respectively allocated to direct writing is most The high corresponding direct writing of top n target group, to transmit the corresponding direct writing of this N number of target group.

For example, the quantity of target group is 4, only includes a UE, be followed successively by UE in each target groupA、 UEB、UEC、UED, wherein, UEALimit priority in corresponding all direct writings is first excellent First level, UEB、UEC、UEDIn corresponding direct writing, the priority of the direct writing of highest priority is equal For the second priority.As the number of the running time-frequency resource for getting is 2, therefore, transmission UE at most can only It is two offer services in 4 target groups simultaneously.

Due to UEALimit priority highest in corresponding direct writing, therefore can be UEADistribution one Individual running time-frequency resource.Due to UEB、UEC、UEDLimit priority in corresponding direct writing is identical and equal Less than UEA, therefore can be from UEB、UEC、UEDIt is middle to select any one to distribute another running time-frequency resource.

As can be seen here, when the running time-frequency resource for getting number N less than target group number M when, can be with First transmission priority highest top n direct writing, is easy to base station for during the configuration of high priority direct writing Frequency resource.

In embodiments of the present invention, the subframe corresponding to the N number of running time-frequency resource for getting can be divided respectively The corresponding direct writing of the multiple target groups of dispensing.However, during distribution, it is possible that multiple There is situation about overlapping in each self-corresponding subframe of running time-frequency resource.I.e. one subframe is assigned to multiple targets The direct writing of group transmission, generates service conflict.

When there is service conflict, can according to the height of the priority of the direct writing in overlap sub-frame, To select the direct writing of the only corresponding target group of transmission limit priority, refusal to transmit other target groups Direct writing.Lead to not such that it is able to avoid direct writing from clashing in same subframe normal The situation for sending direct writing occurs.

For example, there is direct writing A and direct writing B, direct writing A correspondence mesh in overlap sub-frame Mark group 1, direct writing B correspondence target group 2, and the priority of direct writing A is higher than direct writing B Priority, therefore in 1 corresponding direct writing A of overlap sub-frame transmission objectives group.

The embodiment of the present invention additionally provides another kind of distribution method of time frequency resources, with reference to Fig. 2, below by way of tool Body step is described in detail.

Step S201, receives a resource pool for scheduling resource distributing method of base station configuration distributing.

In embodiments of the present invention, with a upper embodiment except that, the money that base station is configured by RRC The number in source pond is only one, and the number for being applied to the SL-RNTI of the single resource pool of configuration is also one.

Step S202, detects whether to receive descending control signaling.

Step S203, obtains the positional information of the running time-frequency resource in the descending control signaling.

Step S204, according to the positional information of the running time-frequency resource, in the resource pool for issuing It is determined that the running time-frequency resource for transmitting direct writing.

Step S201~step S204 is referred to step S101 in the above embodiment of the present invention~step S104, here is omitted.

By step S201~step S204, you can determine a running time-frequency resource.

Step S205, determines X from X resource pool corresponding to automatic resource system of selection for passing The running time-frequency resource of defeated direct writing.

In embodiments of the present invention, X resource pool corresponding to automatic resource system of selection can be base station Issued by system message.Can also be that transmission UE is sent under resource pool to base station by RRC signaling After sending out request instruction, base station is issued to transmission UE's according to the request instruction.Transmission UE is being received After the resource pool that base station issues, resource pool can be stored.

X can be positive integer.The number of the target group that its value can be serviced simultaneously according to transmission UE To determine.For example, X=2.

Understand with reference to step S204, now have determined that the X+1 running time-frequency resource for direction communication.

The X+1 time-frequency resource allocating for getting is given target group corresponding direct writing by step S206.

In embodiments of the present invention, after X+1 running time-frequency resource is got, you can X+1 time-frequency is provided The corresponding direct writing of X+1 target group is distributed in source, as each running time-frequency resource can transmit one The corresponding direct writing of target group, therefore can realize in the process to a target group transmission direct writing In, direct writing is transmitted to other target groups, so as to reduce the time delay of direct writing transmission.

In embodiments of the present invention, giving target group corresponding direct writing X+1 time-frequency resource allocating When, can be by the single time-frequency resource allocating determined in step S204 to preferential corresponding to all target groups Level highest direct writing, during by the X time-frequency resource allocating determined in step S205 to removing the allocated Outside the target group of frequency resource, the direct writing of other corresponding priority of target group.

For example, the quantity of target group is 4, and each target group only includes a UE, is followed successively by UEA、UEB、 UEC、UED, wherein, UEALimit priority in corresponding all direct writings is the first priority, UEB、UECIn corresponding direct writing, to be second preferential for the priority of the direct writing of highest priority Level, UEDIn corresponding direct writing, the priority of the direct writing of highest priority is third priority. Transmission UE has stored X=3 resource pool, it may be determined that 3 running time-frequency resources.

Then by the time-frequency resource allocating determined in step S204 to UEA, step S205 determine 3 when Frequency resource is sequentially allocated to UE according to the sequence of limit priority in direct writingB、UECAnd UED, Or be sequentially allocated to UEC、UEBAnd UED

In embodiments of the present invention, it is the X+1 time-frequency resource allocating for getting is corresponding directly to UE During business, it is that X+1 running time-frequency resource corresponding subframe is respectively allocated to into the corresponding direct writing of target group. Under normal circumstances, there is corresponding subframe in each running time-frequency resource, for example, a running time-frequency resource correspondence 6 Individual subframe.

However, in actual applications, it is possible to there is each self-corresponding subframe of multiple running time-frequency resources and there is weight Folded situation.The multiple direct writings to multiple target groups are assigned in a sub- frame in, generate Service conflict.

When there is service conflict, can according to the height of the priority of the direct writing in overlap sub-frame, To select the direct writing of the only corresponding target group of transmission limit priority, refusal to transmit other target groups Direct writing.Lead to not such that it is able to avoid direct writing from clashing in same subframe normal The situation for sending direct writing occurs.

For example, there is direct writing A and direct writing B, direct writing A correspondence mesh in overlap sub-frame Mark group 1, direct writing B correspondence target group 2, and the priority of direct writing A is higher than direct writing B Priority, therefore in 1 corresponding direct writing A of overlap sub-frame transmission objectives group.

In actual applications, it is also possible to exist in overlap sub-frame to multiple target group transmission datas, and each The limit priority identical scene of the corresponding direct writing of target group.When there is above-mentioned scene, can be with Multiple direct writings in detection overlap sub-frame whether include in step S204 determined by single running time-frequency resource The target group distributed.When not existing, then overlap sub-frame can only any one highest priority thereto The target group that direct writing is located is transmitted;When it is present, then overlap sub-frame can only transmitting step S204 The direct writing of the target group distributed by the single running time-frequency resource of middle determination.

For example, in overlap sub-frame, there are 3 direct writings, be followed successively by direct writing A, direct industry Business B and direct writing C, the different target group of 3 direct writing correspondences, direct writing A are corresponding Target group is target group 1, and the corresponding target group of direct writing B is target group 2, and direct writing C is corresponding Target group is target group 3, and the priority of 3 direct writings is identical.Direct writing A is step S204 In determined by the direct writing distributed of single running time-frequency resource, then overlap sub-frame can only pass to target group 1 Defeated direct writing.If 3 direct writings are not that single running time-frequency resource determined by step S204 is divided The direct writing matched somebody with somebody, then the overlap sub-frame can be to arbitrary in target group 1, target 2 and target group 3 It is individual to carry out direct writing transmission.

In actual applications, it is also possible to there is the situation of the number more than running time-frequency resource number X+1 of target group. When there is above-mentioned situation, the highest that can first obtain each self-corresponding direct writing of all target groups is preferential Level, and X+1 time-frequency resource allocating is to X+1 target group before the limit priority highest of direct writing Corresponding direct writing.

With reference to Fig. 3, a kind of time-frequency resource allocating device 30 is embodiments provided, including:First Receiving unit 301, the first detector unit 302, first acquisition unit 303, the first running time-frequency resource determine single Unit 304 and the first allocation unit 305, wherein:

First receiving unit 301, for receiving the N for scheduling resource distributing method of base station configuration distributing Individual resource pool, N is integer, and N >=2;

First detector unit 302, for detecting whether receiving descending control signaling;

First acquisition unit 303, for detecting the descending control letter when first detector unit 302 When making, the positional information of the running time-frequency resource in the descending control signaling is obtained;

First running time-frequency resource determining unit 304, for got according to the first acquisition unit 303 when The positional information of frequency resource, determines that in N number of resource pool N is respectively used for transmitting direct writing respectively Running time-frequency resource, the running time-frequency resource are corresponded with the resource pool;

First allocation unit 305, for will be the N number of time-frequency resource allocating for getting corresponding to target group Direct writing.

In being embodied as, first allocation unit 305 can be used for:When the number of the target group For N when, according to the limit priority order from high to low of each self-corresponding direct writing of the target group, N number of running time-frequency resource is respectively allocated to into the corresponding direct writing of N number of target group successively.

In being embodied as, first allocation unit 305 can be also used for:When the target group Number is M, and during M > N, the limit priority of each self-corresponding direct writing of M target group of acquisition; N number of running time-frequency resource is respectively allocated to into the limit priority highest top n target group of direct writing Corresponding direct writing.

In being embodied as, first allocation unit 305 can be used for:By N number of running time-frequency resource Corresponding subframe is respectively allocated to the corresponding direct writing of the target group.

In being embodied as, first allocation unit 305 can be also used for:It is sub at one when detecting When frame in is assigned the multiple direct writings to multiple target groups, then the subframe is distributed to into wherein one The target group that the individual direct writing comprising highest priority is located carries out direct writing transmission.

With reference to Fig. 4, another kind of time-frequency resource allocating device 40 is embodiments provided, including:The Two receiving units 401, the second detector unit 402, second acquisition unit 403, the second running time-frequency resource determine Unit 404, the 3rd running time-frequency resource determining unit 405 and the second allocation unit 406, wherein:

Second receiving unit 401, for receive base station configuration distributing for the one of scheduling resource distributing method Individual resource pool;

Second detector unit 402, for detecting whether receiving descending control signaling;

Second acquisition unit 403, for when the descending control signaling is received, obtaining the descending control The positional information of the running time-frequency resource in signaling processed;

Second running time-frequency resource determining unit 404, for the positional information according to the running time-frequency resource, described Determine in the resource pool for issuing for transmitting a running time-frequency resource of direct writing;

3rd running time-frequency resource determining unit 405, for providing from X corresponding to automatic resource system of selection The X running time-frequency resource for transmitting direct writing is determined in the pond of source;

Second allocation unit 406, the X+1 time-frequency resource allocating for getting give target group correspondence Direct writing.

In being embodied as, second allocation unit 406 can be used for:According to the target group each The limit priority of corresponding direct writing order from high to low, successively by the X+1 running time-frequency resource The corresponding direct writing of X+1 target group is respectively allocated to, wherein, according to the scheduling resource distribution side A time-frequency resource allocating determined by method is to a direct writing place target group comprising highest priority Direct writing.

In being embodied as, second allocation unit 406 can be used for:The X+1 time-frequency is provided Subframe corresponding to source is respectively allocated to the corresponding direct writing of the target group.

In being embodied as, second allocation unit 406 can be also used for:It is sub at one when detecting When frame in is assigned the multiple direct writings to multiple target groups, then the subframe is distributed to into wherein one The target group that the individual direct writing comprising highest priority is located carries out direct writing transmission.

In being embodied as, second allocation unit 406 can be used for:When comprising highest priority The number of the target group of direct writing is for multiple, and the target group of distribution includes the scheduling in the subframe During the corresponding target group of running time-frequency resource determined by resource allocation methods, by the subframe only according to institute Stating a running time-frequency resource determined by scheduling resource distributing method carries out direct writing transmission.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment Suddenly can be by program to instruct the hardware of correlation to complete, the program can be stored in a computer can Read in storage medium, storage medium can include:ROM, RAM, disk or CD etc..

Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, Without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore the guarantor of the present invention Shield scope should be defined by claim limited range.

Claims (20)

1. a kind of distribution method of time frequency resources, it is characterised in that include:
The N number of resource pool for scheduling resource distributing method of base station configuration distributing is received, N is integer, and N ≥2;
Detect whether to receive descending control signaling;
When the descending control signaling is detected, the position of the running time-frequency resource in the descending control signaling is obtained Information;
According to the positional information of the running time-frequency resource, determined in N number of resource pool respectively N number of for transmitting The running time-frequency resource of direct writing, the running time-frequency resource are corresponded with the resource pool;
Give target group corresponding direct writing the N number of time-frequency resource allocating for getting.
2. distribution method of time frequency resources as claimed in claim 1, it is characterised in that the number of the target group It is for N, described to give target group corresponding direct writing the N number of time-frequency resource allocating for getting, including: According to the limit priority order from high to low of each self-corresponding direct writing of the target group, successively will N number of running time-frequency resource is respectively allocated to the corresponding direct writing of N number of target group.
3. distribution method of time frequency resources as claimed in claim 2, it is characterised in that the number of the target group It is for M, described to give target group corresponding direct writing the N number of time-frequency resource allocating for getting, also include: As M > N, the limit priority of each self-corresponding direct writing of M target group of acquisition;By the N The limit priority highest top n target group that individual running time-frequency resource is respectively allocated to direct writing is corresponding straight Connect business.
4. distribution method of time frequency resources as claimed in claim 1, it is characterised in that described by the N for getting Individual time-frequency resource allocating gives target group corresponding direct writing, including:
Subframe corresponding to N number of running time-frequency resource is respectively allocated to into the corresponding direct writing of the target group.
5. distribution method of time frequency resources as claimed in claim 4, it is characterised in that also include:When detecting When a sub- frame in is assigned the multiple direct writings to multiple target groups, then the subframe is distributed The target group being located to one of them direct writing comprising highest priority carries out direct writing transmission.
6. a kind of distribution method of time frequency resources, it is characterised in that include:
Receive a resource pool for scheduling resource distributing method of base station configuration distributing;
Detect whether to receive descending control signaling;
When the descending control signaling is received, the position of the running time-frequency resource in the descending control signaling is obtained Information;
According to the positional information of the running time-frequency resource, determine in the resource pool for issuing straight for transmitting Connect a running time-frequency resource of business;
X is determined from X resource pool corresponding to automatic resource system of selection for transmit direct writing when Frequency resource;
Give target group corresponding direct writing the X+1 time-frequency resource allocating for getting.
7. distribution method of time frequency resources as claimed in claim 6, it is characterised in that described to get X+1 time-frequency resource allocating gives target group corresponding direct writing, including:
According to the limit priority order from high to low of each self-corresponding direct writing of the target group, successively will The X+1 running time-frequency resource is respectively allocated to the corresponding direct writing of X+1 target group, wherein, according to Determined by the scheduling resource distributing method, a time-frequency resource allocating includes highest priority to one The direct writing of direct writing place target group.
8. distribution method of time frequency resources as claimed in claim 7, it is characterised in that described to get X+1 time-frequency resource allocating gives target group corresponding direct writing, including:
Subframe corresponding to the X+1 running time-frequency resource is respectively allocated to into the corresponding direct industry of the target group Business.
9. distribution method of time frequency resources as claimed in claim 8, it is characterised in that also include:When detecting When a sub- frame in is assigned the multiple direct writings to multiple target groups, then the subframe is distributed The target group being located to one of them direct writing comprising highest priority carries out direct writing transmission.
10. distribution method of time frequency resources as claimed in claim 9, it is characterised in that described by the subframe point The target group at one of them place of the direct writing comprising highest priority of dispensing carries out direct writing transmission, Including:When the direct writing comprising highest priority target group number for multiple, and in the subframe The target group of distribution includes determined by the scheduling resource distributing method the corresponding target of running time-frequency resource During group, the subframe is only carried out directly according to a running time-frequency resource determined by the scheduling resource distributing method Connect business transmission.
11. a kind of time-frequency resource allocating devices, it is characterised in that include:
First receiving unit, for receiving the N number of resource for scheduling resource distributing method of base station configuration distributing Pond, N is integer, and N >=2;
First detector unit, for detecting whether receiving descending control signaling;
First acquisition unit, for when first detector unit detects the descending control signaling, obtaining The positional information of the running time-frequency resource in the descending control signaling;
First running time-frequency resource determining unit, the position of the running time-frequency resource for being got according to the first acquisition unit Confidence ceases, and determines that N is respectively used for transmitting the running time-frequency resource of direct writing in N number of resource pool respectively, The running time-frequency resource is corresponded with the resource pool;
First allocation unit, for giving target group corresponding direct writing the N number of time-frequency resource allocating for getting.
12. time-frequency resource allocating devices as claimed in claim 11, it is characterised in that first distribution is single Unit is used for:When the number of the target group is N, according to each self-corresponding direct writing of the target group Limit priority order from high to low, N number of running time-frequency resource is respectively allocated to into N number of mesh successively The corresponding direct writing of mark group.
13. time-frequency resource allocating devices as claimed in claim 12, it is characterised in that first distribution is single Unit is additionally operable to:When the number of the target group is M, and during M > N, obtain M target group each right The limit priority of the direct writing answered;N number of running time-frequency resource is respectively allocated to into direct writing most The corresponding direct writing of high priority highest top n target group.
14. time-frequency resource allocating devices as claimed in claim 11, it is characterised in that first distribution is single Unit is used for:Subframe corresponding to N number of running time-frequency resource is respectively allocated to into the target group corresponding straight Connect business.
15. time-frequency resource allocating devices as claimed in claim 14, it is characterised in that first distribution is single Unit is additionally operable to:When detect the multiple direct writings to multiple target groups are assigned in a sub- frame in when, Then the target group that the subframe distributes to one of them place of the direct writing comprising highest priority is carried out Direct writing is transmitted.
16. a kind of time-frequency resource allocating devices, it is characterised in that include:
Second receiving unit, for receiving a resource for scheduling resource distributing method of base station configuration distributing Pond;
Second detector unit, for detecting whether receiving descending control signaling;
Second acquisition unit, for when the descending control signaling is received, obtaining the descending control signaling In running time-frequency resource positional information;
Second running time-frequency resource determining unit, for the positional information according to the running time-frequency resource, issues described Determine in one resource pool for transmitting a running time-frequency resource of direct writing;
3rd running time-frequency resource determining unit, for true from X resource pool corresponding to automatic resource system of selection Determine the X running time-frequency resource for transmitting direct writing;
Second allocation unit, the X+1 time-frequency resource allocating for getting give target group corresponding direct industry Business.
17. time-frequency resource allocating devices as claimed in claim 16, it is characterised in that second distribution is single Unit is used for:According to the limit priority order from high to low of each self-corresponding direct writing of the target group, The X+1 running time-frequency resource is respectively allocated to into the corresponding direct writing of X+1 target group successively, wherein, According to determined by the scheduling resource distributing method, a time-frequency resource allocating includes priority most to one The direct writing of high direct writing place target group.
18. time-frequency resource allocating devices as claimed in claim 17, it is characterised in that second distribution is single Unit is used for:Subframe corresponding to the X+1 running time-frequency resource is respectively allocated to into the target group corresponding Direct writing.
19. time-frequency resource allocating devices as claimed in claim 18, it is characterised in that second distribution is single Unit is additionally operable to:When detect the multiple direct writings to multiple target groups are assigned in a sub- frame in when, Then the target group that the subframe distributes to one of them place of the direct writing comprising highest priority is carried out Direct writing is transmitted.
20. time-frequency resource allocating devices as claimed in claim 19, it is characterised in that second distribution is single Unit is used for:When the direct writing comprising highest priority target group number for multiple, and the subframe The target group of interior distribution includes determined by the scheduling resource distributing method the corresponding mesh of running time-frequency resource During mark group, the subframe is only entered according to a running time-frequency resource determined by the scheduling resource distributing method Row direct writing is transmitted.
CN201510751147.9A 2015-11-06 2015-11-06 Time-frequency resource allocation method and device CN106686728A (en)

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