CN106658609A

CN106658609A - Data transmission resource reservation method and device

Info

Publication number: CN106658609A
Application number: CN201510740443.9A
Authority: CN
Inventors: 林琳; 冯媛; 房家奕; 周海军
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-11-03
Filing date: 2015-11-03
Publication date: 2017-05-10
Anticipated expiration: 2035-11-03
Also published as: CN106658609B; WO2017076196A1

Abstract

The invention relates to the technical field of communications, and more particularly relates to a data transmission resource reservation method and a device, wherein the problem that a data transmission resource between different nodes is high in collision probability in the prior art can be solved. According to the embodiments of the present invention, the data transmission resource reservation method comprises the following steps: firstly, a first node determines the scheduling assignment (SA) information for indicating a first data transmission resource and a second data transmission resource based on the first data transmission resource selected for the current service and the second data transmission resource selected for the next service; secondly, the first node transmits the SA information to all the other nodes. According to the embodiments of the present invention, each node of a network can acquire data transmission resources required to be occupied for the current services of all the other nodes. Meanwhile, the above node can also know data transmission resources required to be occupied for the next services of all the other nodes in advance. Therefore, each node of the network can have a more fully and more timely understanding on available data transmission resources, so that the collision probability of resources is reduced.

Description

A kind of data transmission resources reserving method and device

Technical field

The present invention relates to communication technical field, more particularly to a kind of data transmission resources reserving method and device.

Background technology

Car networking refers to the information that vehicle, road and environment are collected using the sensing equipment on vehicle and road, It is in communication with each other by car and car, Che Yuren, car and roadside device and realizes information sharing, and it is flat in information network Information is extracted on platform, is shared and effectively utilizes, vehicle is carried out effectively according to different functional requirements Supervision and provide integrated service.

After any node adds network, need to carry out data transmission resource reservation, to realize and other nodes Between communication.Long Term Evolution-equipment to equipment (Long Term Evolution, Device-to-Device, LTE-D2D in) communicating, node is by sending dispatching distribution (Scheduling Assignment, SA) letter Cease to carry out dynamic instruction to the data transmission resources for selecting to take, as shown in figure 1, using in SA resource pools Data transmission resources in the resource (SA 1～m of resource) and data (DATA) resource pool of transmission SA Without fixed incidence relation between (DATA 1～n of resource), therefore while consider the resource of transmission SA With the competition mechanism of data transmission resources.In addition, each indicated this in the SA information of transmission of node The data transmission resources that business takes and data transmission resources indicated in the last SA information for selecting it Between also without any relation.

At present, the data transmission resources between different nodes are clashed situation is more complicated and clashes Likelihood ratio it is higher, such as SA resources are clashed can cause indicated data transmission resources to take failure, Be likely to cause in the case that even if in SA resources, no conflict occurred data transmission resources take failure or It is unavailable, such as SA information decoding failure, or data transmission resources indicated in difference SA information There occurs conflict etc..

It can be seen that, the collision probability of the data transmission resources between the different nodes of prior art presence is higher to ask Topic.

The content of the invention

The embodiment of the present invention provides a kind of data transmission resources reserving method and device, to solve different nodes Between data transmission resources the higher problem of collision probability.

The embodiment of the present invention provides a kind of data transmission resources reserving method, including：

Primary nodal point is based upon the first data transmission resource of this service selection and selects for business next time The second data transmission resources selected, it is determined that for indicating the first data transmission resource and the second data transfer The dispatching distribution SA information of resource；

The SA information is sent to other nodes by the primary nodal point.

Alternatively, the first data transmission resource is separated by with the time slot position of second data transmission resources One service period.

Alternatively, the first data transmission resource is separated by with the time slot position of second data transmission resources One service period, and the frequency domain position of second data transmission resources compares the first data transmission money The frequency domain position in source, offset by default frequency offset amount.

Alternatively, methods described also includes：

The primary nodal point judged the first data transmission before first data transmission resource arrival Resource is with the presence or absence of conflict；If there is conflict, the first data transmission resource and described second are abandoned Data transmission resources.

Alternatively, the primary nodal point determines that the first data transmission resource has punching according to following steps It is prominent：

The primary nodal point receives the SA information that other nodes send, it is determined that the SA of other nodes transmissions Indicate described other nodes in information to take described first data transmission resources or indicate described first Data transmission resources are present after conflict, determine that the first data transmission resource that the primary nodal point takes is deposited In conflict.

Alternatively, the primary nodal point it is determined that indicate in the SA information that sends of other nodes it is described other Node is taken after the first data transmission resource, determines that first data that the primary nodal point takes are passed There is conflict in defeated resource, including：

The primary nodal point is taking it is determined that indicating described other nodes in the SA information of other nodes transmissions The distance between the first data transmission resource and described other nodes and described primary nodal point are less than setting After threshold value, determine that the first data transmission resource that the primary nodal point takes has conflict.

Alternatively, the primary nodal point is sent to the SA information after other nodes, also includes：

The primary nodal point judged second data transfer before SA information is determined for business next time Resource is with the presence or absence of conflict；If it is determined that there is conflict, then second data transmission resources are abandoned.

Alternatively, the primary nodal point determines that second data transmission resources have punching according to following steps It is prominent：

The primary nodal point receives the SA information that other nodes send, it is determined that the SA of other nodes transmissions Indicate described other nodes in information to take described second data transmission resources or indicate described second Data transmission resources are present after conflict, determine that second data transmission resources that the primary nodal point takes are deposited In conflict.

Alternatively, the primary nodal point it is determined that indicate in the SA information that sends of other nodes it is described other Node is taken after second data transmission resources, determines that second data that the primary nodal point takes are passed There is conflict in defeated resource, including：

The primary nodal point is taking it is determined that indicating described other nodes in the SA information of other nodes transmissions The distance between second data transmission resources and described other nodes and described primary nodal point are less than setting After threshold value, determine that second data transmission resources that the primary nodal point takes have conflict.

Alternatively, the primary nodal point according to following steps determine described in other nodes and the primary nodal point it Between distance less than setting threshold value：

The positional information that the primary nodal point is indicated in the SA information according to other nodes transmissions, it is determined that The distance between described other nodes and described primary nodal point are less than setting threshold value；Or,

The receiving power of the SA information that the primary nodal point other nodes according to receiving send, determines institute The distance between other nodes and described primary nodal point are stated less than setting threshold value.

Alternatively, the SA information is sent to other nodes by the primary nodal point, including：

The primary nodal point randomly chooses a kind of SA pattern from default various SA patterns pattern, For sending the SA information；Wherein, each SA pattern includes multiple SA resources.

Alternatively, first SA resource of the primary nodal point in the SA pattern using selection After sending the SA information, last the SA resource in the SA pattern using selection is sent out Before sending the SA information, also include：

The primary nodal point abandons the described of selection after it is determined that the first data transmission resource has conflict Untapped SA resources in SA pattern.

The primary nodal point is again this business after it is determined that the first data transmission resource has conflict Select data transmission resources and for service selection data transmission resources next time, and reselect for sending The SA pattern of the SA information.

Alternatively, the corresponding resource information of the first data transmission resource is included in the SA information；Or Person, includes the corresponding resource information of the first data transmission resource, and described the in the SA information Relation information between two data transmission resources and the first data transmission resource.

Alternatively, the positional information comprising the primary nodal point in the SA information.

Alternatively, the primary nodal point selects the first data transmission resource and the second number according to following steps According to transfer resource：

The primary nodal point is believed according to the seizure condition of each data transmission resources for meeting transmission delay demand Breath, selects the first data transmission resource and the second data transmission resources.

Alternatively, the seizure condition information of any data transfer resource includes that the data transmission resources are current It is continuous service period number that is occupied or there is conflict not to be designated as by any SA information.

Alternatively, the seizure condition information of any data transfer resource includes the number of primary nodal point measurement According to the corresponding jamming power of transfer resource.

Alternatively, methods described also includes：

The primary nodal point after it is determined that there is conflict in the data transmission resources that other nodes take, described Carry in SA information and indicate that the data transmission resources that other nodes take have the information for conflicting.

Alternatively, the primary nodal point determines that the data transmission resources that other nodes take are deposited according to following steps In conflict：

The primary nodal point receives the SA information that different nodes send；

If indicated data transmission resources exist and overlap in the SA information that the different nodes send, really There is conflict in the data transmission resources that the fixed presence overlaps.

If the continuous n times of the primary nodal point send to described other nodes on the data transmission resources for taking Data demodulation failure, it is determined that there is conflict in the data transmission resources that described other nodes take, N is big In or positive integer equal to 1.

The embodiment of the present invention provides a kind of data transmission resources device for displaying predetermined, including：

Processing module, for be based upon this service selection of primary nodal point first data transmission resource and For the second data transmission resources of service selection next time, it is determined that for indicating the first data transmission resource With the dispatching distribution SA information of the second data transmission resources；

Transceiver module, for the SA information that the processing module determines to be sent to into other nodes.

Using the embodiment of the present invention, each node in network not only can know that other nodes this business is needed The data transmission resources to be taken, can also in advance understand the number that other nodes take in service needed next time According to transfer resource, so, each node optional data transmission resources can be understood more comprehensively, more and When, can effectively reduce different nodes and indicate identical data transmission resources in the SA information for sending Situation, so as to reduce the probability of resource contention.

Description of the drawings

Fig. 1 is the resource and data transmission resources schematic diagram indicated in SA information for transmitting SA；

Fig. 2 is the data transmission method flow chart that the embodiment of the present invention one is provided；

Fig. 3 is the data transmission method flow chart that the embodiment of the present invention two is provided；

Fig. 4 is data transmission resources device for displaying predetermined structural representation provided in an embodiment of the present invention；

Fig. 5 is data transmission resources reservation apparatus structural representation provided in an embodiment of the present invention.

Specific embodiment

In the embodiment of the present invention, primary nodal point be based upon the first data transmission resource of this service selection and For the second data transmission resources of service selection next time, it is determined that for indicating the first data transmission resource With the dispatching distribution SA information of the second data transmission resources；The SA information is sent to into other nodes. Using the embodiment of the present invention, each node in network not only can know that other nodes this service neededs is accounted for Data transmission resources, can also in advance understand other nodes and pass in the data that service needed next time takes Defeated resource, so, each node optional data transmission resources can be understood more comprehensively, more in time, The feelings that different nodes indicate identical data transmission resources in the SA information for sending can effectively be reduced Condition, so as to reduce the probability of resource contention.The embodiment of the present invention also proposed some other preferred embodiment party Formula come further solve conflict, the explanation of detailed in Example.

The embodiment of the present invention is described in further detail with reference to Figure of description.

Embodiment one

As shown in Fig. 2 the data transmission method flow chart provided for the embodiment of the present invention one, including following step Suddenly：

S201：Primary nodal point is based upon the first data transmission resource of this service selection and for industry next time It is engaged in the second data transmission resources of selection, it is determined that for indicating the first data transmission resource and the second data The dispatching distribution SA information of transfer resource.

Here, described this business refers to the business that primary nodal point needs to perform in a nearest service period, The business next time refers to that a service period after this business needs the business for performing.

In being embodied as, primary nodal point can be according to each data transfer in data (DATA) resource pool The occupancy situation of resource, selects this business and the next time data transmission resources of business occupancy.Here number Can be determined by the SA information that other nodes send according to the occupancy situation of transfer resource, detailed in Example Two description.

In addition, the first data transmission resource pair can be included in the SA information of primary nodal point transmission The resource information answered；Or, the corresponding resource of the first data transmission resource is included in the SA information Relation information between information, and second data transmission resources and the first data transmission resource.

Here, the resource information included in SA information can refer to Physical Resource Block (Physical Resource Block, PRB), subchannel information, transmission pattern with modulation with coding strategy (Modulation and Coding Scheme, MCS) etc. in one or more.Second data transmission resources and described Relation information between one data transmission resources can be acquiescence, or indicate in SA information, should Relation information can be：The time slot position of the first data transmission resource and second data transmission resources It is separated by a service period, or, the first data transmission resource and second data transmission resources Time slot position is separated by a service period, and the frequency domain position of second data transmission resources compares described The frequency domain position of one data transmission resources, offset by default frequency offset amount.

In addition, can also include the positional information of the primary nodal point in the SA information, other nodes can To determine the need for avoiding using number indicated in the SA information based on the positional information for wherein carrying According to transfer resource, the description of detailed in Example two.

In addition, primary nodal point can exist with the data transmission resources that other nodes occupancy are indicated in SA information The information of conflict.

In being embodied as, one or more that primary nodal point can be in the following manner determines other nodes There is conflict in the data transmission resources of occupancy：

If indicated data transmission resources exist and overlap in the SA information that the different nodes send, really There is conflict in the data transmission resources that the fixed presence overlaps；And/or, if the continuous n times pair of the primary nodal point Described other nodes take data transmission resources on send data demodulation failure, it is determined that it is described other There is conflict in the data transmission resources that node takes, N is the positive integer more than or equal to 1.

Such as, node A receives the SA information respectively from node C and node D, and discovery wherein all refers to Having shown will take DATA resources 1, then node A indicates that DATA resources 1 are deposited in the SA information for sending In conflict.For another example, the SA information that node A receiving nodes C sends, finding after being successfully decoded should Indicated by the SA information that other nodes that the DATA resources 1 that SA information is indicated are received with oneself send DATA resources do not overlap, but it is indicated in the SA information that sends to node C of oneself continuous n times DATA resources 1 on data all do not demodulate successfully, then in the SA information for oneself sending indicate section There is conflict in the DATA resources 1 of the occupancy of point C.

S202：The SA information is sent to other nodes by primary nodal point.

In being embodied as, primary nodal point randomly chooses a kind of SA resources from SA resource pools, will be described SA information is sent to other nodes.So, the SA information that other nodes can be sent by the primary nodal point The first data transmission resource and the second data transmission resources of primary nodal point occupancy are known, to avoid conflict.

Except the think of of the above-mentioned data transmission resources for indicating service needed transmission next time in advance in SA information Think outer, the embodiment of the present application additionally provides some preferred embodiment, further reduce the general of resource contention Rate, is described further below by a specific embodiment.

Embodiment two

In above-described embodiment one, primary nodal point randomly chooses SA resources from SA resource pools, will be described SA information is sent to other nodes.In order to increase connecing for the SA information that other nodes send to the primary nodal point Harvest power, further reduces the probability that data transmission resources collision occurs, can in a service period, SA information is transmitted several times, namely repeatedly indicates the data transmission resources for taking.Alternatively, primary nodal point can It is described for sending with a kind of SA pattern of random selection from default various SA patterns (pattern) SA information；Wherein, each SA pattern includes multiple SA resources, and primary nodal point is in this business week In phase, the SA information is sent in each SA resource wherein successively.Here, SA pattern That is the syntagmatic of SA resources, primary nodal point have selected any one the SA resource in certain pattern, All SA resources of the pattern are have selected, and is dynamic between SA resources and data transmission resources Indexical relation, not fixed incidence relation between each SA resource and its data transmission resources for indicating.

In following examples two, it is introduced as a example by SA information is transmitted several times in a service period, Certainly, it should be noted that it will be obvious to one with ordinary skill in the art that some technical characteristics are also fitted in the embodiment For the scene of only transmission primaries SA information, for the use of these technical characteristics, it is not limited to repeatedly Under the scene of transmission SA information.In a word, those skilled in the art are right under the premise of creative work is not paid Any deformation done by the present embodiment all should be in the scope of the present invention.

As shown in figure 3, the data transmission method flow chart provided for the embodiment of the present invention two, including following step Suddenly：

S301：Primary nodal point is this service selection first data transmission resource and for service selection next time Second data transmission resources.

In being embodied as, primary nodal point can be according to each data transmission resources for meeting transmission delay demand Seizure condition information, select the first data transmission resource and the second data transmission resources.

Here, the seizure condition information of any data transfer resource can include that 1) data transmission resources connect It is continuous service period number w that is occupied or there is conflict not to be designated as by any SA information, or, 2) appoint The seizure condition information of one data transmission resources includes the data transmission resources pair of primary nodal point measurement The jamming power answered.

1) for seizure condition information includes described continuous not being designated as occupied by any SA information or existing The situation of the number of cycles of conflict：

Assume that moment that primary nodal point this business is reached is t, service period is T, the delay requirement of business For 100ms, now need to select data transmission resources (hereinafter referred to as DATA resources), then for this The optional DATA resources of secondary business are the DATA resources for falling into [t, t+100] time interval, it is assumed that optional A total of N number of DATA resources.

For each DATA resource, if the data transmission resources are current continuously not by any SA Information be designated as it is occupied or exist conflict service period number w be 0, then mean [t-T, t] when Between it is interval in, indicate the DATA resources in the SA information that other nodes that primary nodal point is received send Occupied or presence conflict.Here occupied refers to：Indicating in the SA information that other nodes send will Take the DATA resources；There is conflict and refer to other nodes and determine that the DATA resources are occupied, And taken by least two nodes, or, other nodes determine the DATA resources by a node Take, but continuous n times all can not go out data by unsuccessful demodulation in the DATA resources, and concrete determination mode is shown in It is described below.

If w is more than 0, it is meant that in the time interval of [t- (w+1) × T, t-w × T], primary nodal point connects The DATA resources are indicated in the SA information that other nodes for receiving send occupied or there is conflict, and In [t-w × T, t] this time interval comprising the continuous service period of w, primary nodal point receive its All do not indicate that DATA resources are occupied or presence conflicts in the SA information that its node sends.

In being embodied as, can carry out continuous integration to w values does not have the upper limit, it is also possible to arrange a maximum Value, be accumulated to after maximum and be not further added by, until receiving new SA information in indicate the DATA resources Occupied or presence conflict, then return 0 by w values.

In being embodied as, primary nodal point can select w values when the first data transmission resource is selected Maximum DATA resources, or select at random meeting in DATA scope of resource of the w values more than given threshold One is selected, default rule is may then based on and is selected the second data transmission resources, default rule is such as： First data transmission resource is separated by a service period with the time slot position of second data transmission resources, or Person, the first data transmission resource is separated by a business with the time slot position of second data transmission resources Cycle, and the frequency domain position of second data transmission resources compares the frequency domain of the first data transmission resource Position, offset by default frequency offset amount.

2) situation of the corresponding jamming power of the data transmission resources is included for seizure condition information：

Here, the jamming power refers to the co-channel interference that other nodes bring in system, can be by demodulation Reference signal (De Modulation Reference Signal, DMRS) measurement is obtained.

Which can solve hidden node problem：If node A and node C are far away, mutually can not It is correctly decoded, but node B can be with receiving node A and the signal of node C, if node A and node C Have selected identical data transmission resources, node B is then just received not to the signal of node A and node C Arrive.In the case of random selection resource, node A is due to can not correctly solve the letter that point of adjustment C sends Number, reality may be selected by the data transmission resources that node C takes as idling-resource, this is just Cause hidden node problem.

In the embodiment that the present invention is provided, the jamming power that node A passes through each DATA resource of measurement, The DATA resources for selecting jamming power minimum, or it is random less than in the range of certain thresholding in jamming power A DATA resource is selected, the probability of concealed nodes appearance can be significantly reduced.

S302：Primary nodal point is determined for indicating the first data transmission resource and the second data transmission resources Dispatching distribution SA information.

Such as, primary nodal point selects SA pattern1, wherein comprising tri- SA of SA-1, SA-2, SA-3 Resource, primary nodal point is planned to send the first data transmission resource and the second number in these three SA resources According to transfer resource.

With primary nodal point select SA pattern1 in comprising according to time order and function arrange SA-1, SA-2, As a example by tri- SA resources of SA-3, can by from currently to the first data transmission resource arrival when Between interval division be from currently to SA-1 arrive time interval, from SA-1 arrive after to SA-3 arrive Time interval before, arrive from SA-3 after arrive to the first data transmission resource before time It is interval.Into following steps S303～S305.

S303：Institute is sent to first SA resource in the SA pattern (pattern1) using selection State the processing mode of the resource contention occurred before SA information：

If it is determined that the first data transmission resource has conflict, then the first data transmission resource is abandoned And it is again this business and service selection data transmission resources next time with the second data transmission resources, weighs It is new to select SA pattern (pattern2) to indicate the data transmission resources for reselecting；If it is determined that No conflict occurred for the first data transmission resource, but the second data transmission resources there occurs conflict, then for Next time business reselects the second data transmission resources, and in the SA pattern (pattern1) for selecting before SA resources on indicate that this service needed takes described first data transmission money that no conflict occurred Source, and second data transmission resources for reselecting.

Such as, node A is not before SA-1 is sent, if it is decided that DATA resources 1 there occurs conflict, Then node A abandons DATA resources 1, reselects DATA resources 3 and DATA resources 4, and again Select SA pattern2 to take DATA resources 3 indicating oneself, and DATA is taken after cycle T Resource 4.

In addition, node A is not before SA-1 is sent, if it is decided that DATA resources 1 are not rushed Dash forward but DATA resources 2 there occurs conflict, then reselect DATA resources 3, and SA pattern1's Indicate that DATA resources 1 oneself will be taken in three SA, and DATA resources are taken after cycle T 3。

S304：Institute is sent to first SA resource in the SA pattern (pattern1) using selection After stating SA information, last the SA resource in the SA pattern using selection sends described The processing mode of the resource contention occurred before SA information：

If it is determined that the first data transmission resource has conflict, then the first data transmission money is abandoned Source, and abandon untapped SA resources in the SA pattern of selection, again for this business and Next time service selection data transmission resources, reselect SA pattern (pattern2) to indicate to select again The data transmission resources selected；If it is determined that the first data transmission resource no conflict occurred, but Two data transmission resources there occurs conflict, then preserve the consequences of hostilities for determining, temporarily not process (i.e. temporary When do not abandon process).

Such as, node A is after it have sent SA1-1, if still having re-transmission in the SA pattern1 for selecting SA have not been transmitted, such as SA1-2 and SA1-3 have not been transmitted, but node A judges DATA resources 1 Conflict is there occurs, then node A abandons DATA resources 1, and abandons SA1-2 and SA1-3, selects again Selecting DATA resources 3 and DATA resources 4, and reselect SA pattern2 will take indicating oneself DATA resources 3, and DATA resources 4 are taken after cycle T.

In addition, node A is after it have sent SA1-1, if still having re-transmission in the SA pattern1 for selecting SA have not been transmitted, such as SA1-2 and SA1-3 have not been transmitted, if it is decided that DATA resources 1 do not have Clash but DATA resources 2 there occurs conflict, then node A preserves consequences of hostilities, do not do at conflict Reason.

S305：Last SA resource in the SA pattern (pattern1) using selection is sent After the SA information, the process of the resource contention occurred before the first data transmission resource is reached Mode：

If the first data transmission resource has conflict, the first data transmission resource is abandoned, weight It is newly this business and service selection data transmission resources next time, reselects SA pattern (pattern2) To indicate the data transmission resources for reselecting；If it is determined that the first data transmission resource is not sent out Raw conflict, then after first data transmission resource arrival, using the first data transmission resource transmission Data；If no conflict occurred for the first data transmission resource, but the second data transmission resources there occurs Conflict, then preserve the consequences of hostilities for determining, does not temporarily process.

Explanation is needed exist for, is illustrated in above-mentioned steps, if reached in the first data transmission resource Find that the first data transmission resource has conflict before, then can reselect two data transmission resources For this business and business transmission data next time.Here, although if it find that passing in the first data when conflicting Before defeated resource is reached, but now no time is that current business selects data transmission resources, then putting After abandoning first data transmission resource, reselect two data transmission resources and come for business next time and lower next time Business transmission data.

Such as, node A send SA1-3 after, DATA resources 1 arrive before, if it is decided that No conflict occurred for DATA resources 1, then in the transmitting data of DATA resources 1；If it is determined that DATA There is conflict in resource 1, then abandon DATA resources 1, reselect DATA resources 3 and DATA resources 4, and reselect SA pattern2 and will take DATA resources 3 indicating oneself, account for after cycle T With DATA resources 4.

In addition, node A is after it have sent SA1-3, before DATA resources 1 arrive, if sentenced No conflict occurred but DATA resources 2 there occurs conflict to determine DATA resources 1, then preserve consequences of hostilities, Clash handle is not done.

S306：After data have been sent in the first data transmission resource, primary nodal point starts to select SA resources are indicating transmission data is used in follow-up two service periods data transmission resources.

Now, with reference to the consequences of hostilities preserved in S304 and S305, if it is determined that second data are passed No conflict occurred for defeated resource (namely second data are all thought during S304, S305, S306 No conflict occurred for transfer resource), then primary nodal point retains second data transmission resources, reselection one Individual data transmission resources, one SA pattern of reselection, and in the corresponding SA resources of the SA pattern Indicate that this service needed takes second data transmission resources, next time service needed takes reselection The data transmission resources.If first determine second data transmission resources there occurs conflict (namely Determine that second data transmission resources are clashed in the either step of S304, S305, S306), then One node abandons second data transmission resources, two data transmission resources of reselection and SA pattern, And indicate in the corresponding SA resources of the SA pattern this business and next time service needed take institute State the data transmission resources of reselection.

Such as, if node A judges DATA resources 2, no conflict occurred, one DATA of reselection Resource 5, reselection SA pattern, it is assumed that have selected SA pattern3, have SA3-1 in SA pattern3, SA3-2 and SA3-3, then node A can indicate that oneself will take DATA resources 2 in this 3 SA, And DATA resources 5 are taken after cycle T.

In addition, if node A judges that DATA resources 2 there occurs conflict, then reselection DATA resource 6 With DATA resources 7, reselection SA pattern, it is assumed that SA pattern4 are have selected, in SA pattern4 There are SA4-1, SA4-2 and SA4-3, then node A can indicate that oneself will take DATA in this 3 SA Resource 6, and DATA resources 7 are taken after cycle T.

Above-mentioned steps are summarized, i.e.,：In primary nodal point before first data transmission resource arrival, judge The first data transmission resource is with the presence or absence of conflict；If there is conflict, the first data transmission is abandoned Resource and second data transmission resources, otherwise, when the first data transmission resource is reached, The first data transmission transmitted over resources data；

In being embodied as, primary nodal point determines that the first data transmission resource has punching according in the following manner It is prominent：

The primary nodal point receives the SA information that other nodes send, it is determined that the SA of other nodes transmissions Indicate described other nodes in information to take described first data transmission resources or indicate described first Data transmission resources are present after conflict, determine that the first data transmission resource that the primary nodal point takes is deposited In conflict；

Alternatively, the feelings of the first data transmission resource are taken for indicating other nodes in SA information Condition：Primary nodal point in the SA information of other nodes transmissions it is determined that indicate described in described other nodes occupancy The distance between first data transmission resource and described other nodes and described primary nodal point are less than setting thresholding After value, determine that the first data transmission resource that the primary nodal point takes has conflict.

Correspondingly, primary nodal point judged second data before SA information is determined for business next time Transfer resource is with the presence or absence of conflict；If it is determined that there is conflict, then second data transmission resources are abandoned.

Primary nodal point determines that second data transmission resources have conflict according to following steps：

The primary nodal point receives the SA information that other nodes send, it is determined that the SA of other nodes transmissions Indicate described other nodes in information to take described second data transmission resources or indicate described second Data transmission resources are present after conflict, determine that second data transmission resources that the primary nodal point takes are deposited In conflict；

Alternatively, the feelings of second data transmission resources are taken for indicating other nodes in SA information Condition：The primary nodal point is taking it is determined that indicating described other nodes in the SA information of other nodes transmissions The distance between second data transmission resources and described other nodes and described primary nodal point are less than setting After threshold value, determine that second data transmission resources that the primary nodal point takes have conflict.

In above process, the primary nodal point can according to following steps determine described in other nodes with it is described The distance between primary nodal point is less than setting threshold value：

The positional information that the primary nodal point is indicated in the SA information according to other nodes transmissions, it is determined that The distance between described other nodes and described primary nodal point are less than setting threshold value；Here, primary nodal point knot The positional information of other nodes indicated in the positional information of itself, and the SA information of other nodes is closed, Judge the distance between described other nodes and described primary nodal point whether less than setting threshold value；Or,

The receiving power of the SA information that the primary nodal point other nodes according to receiving send, determines institute The distance between other nodes and described primary nodal point are stated less than setting threshold value.Here, primary nodal point can be with When the receiving power for receiving the SA information that described other nodes send is less than certain power threshold, institute is determined The distance between other nodes and described primary nodal point are stated less than setting threshold value.

Based on same inventive concept, a kind of and data transmission resources reservation side is additionally provided in the embodiment of the present invention The corresponding data transmission resources device for displaying predetermined of method, due to the principle and the embodiment of the present invention of the device solve problem Data transmission resources reserving method is similar, therefore the enforcement of the device may refer to the enforcement of method, repetition Place repeats no more.

As shown in figure 4, be data transmission resources device for displaying predetermined structural representation provided in an embodiment of the present invention, Including：

Processing module 41, for be based upon primary nodal point this service selection first data transmission resource with And for the second data transmission resources of service selection next time, it is determined that for indicating the first data transmission money Source and the dispatching distribution SA information of the second data transmission resources；

Transceiver module 42, the SA information for the processing module 41 to be determined is sent to other nodes.

Alternatively, the processing module 41 is additionally operable to：

Before the first data transmission resource arrives, judge that the first data transmission resource whether there is Conflict；If there is conflict, the first data transmission resource and second data transmission resources are abandoned.

Alternatively, the processing module 41 according to following steps specifically for determining the first data transmission There is conflict in resource：

The SA information that other nodes send is received, it is determined that indicating in the SA information of other nodes transmissions Described other nodes take the first data transmission resource or indicate the first data transmission resource After there is conflict, determine that the first data transmission resource has conflict.

Alternatively, the processing module 41 specifically for：

It is determined that described other nodes are indicated in the SA information of other nodes transmissions takes described first data After the distance between transfer resource and described other nodes and described primary nodal point are less than setting threshold value, really There is conflict in the first data transmission resource that the fixed primary nodal point takes.

Alternatively, the processing module 41 is additionally operable to：

After the SA information to be sent to the transceiver module 42 other nodes, for business next time Before determining SA information, judge second data transmission resources with the presence or absence of conflict；If it is determined that there is punching It is prominent, then abandon second data transmission resources.

Alternatively, the processing module 41 according to following steps specifically for determining second data transfer There is conflict in resource：

The SA information that other nodes send is received, it is determined that indicating in the SA information of other nodes transmissions Described other nodes take second data transmission resources or indicate second data transmission resources After there is conflict, determine that second data transmission resources that the primary nodal point takes have conflict.

Alternatively, the processing module 41 specifically for：

It is determined that described other nodes are indicated in the SA information of other nodes transmissions takes described second data After the distance between transfer resource and described other nodes and described primary nodal point are less than setting threshold value, really There is conflict in second data transmission resources that the fixed primary nodal point takes.

Alternatively, the processing module 41 is specifically for other nodes and institute according to following steps determination The distance between primary nodal point is stated less than setting threshold value：

According to the positional information indicated in the SA information that described other nodes send, it is determined that described other nodes With the distance between the primary nodal point less than setting threshold value；Or,

According to the receiving power for receiving the SA information that described other nodes send, it is determined that described other nodes and The distance between described primary nodal point is less than setting threshold value.

Alternatively, the processing module 41 specifically for：

A kind of SA pattern are randomly choosed from default various SA patterns pattern, for transceiver module Send the SA information；Wherein, each SA pattern includes multiple SA resources.

Alternatively, the processing module 41 specifically for：

First SA resource in the SA pattern using selection is sent after the SA information, Last SA resource in the SA pattern using selection is sent before the SA information, if Determine that the first data transmission resource has conflict, then abandon being not used in the SA pattern of selection SA resources.

Alternatively, the processing module 41 specifically for：

First SA resource in the SA pattern using selection is sent after the SA information, Last SA resource in the SA pattern using selection is sent before the SA information, if Determine that the first data transmission resource has conflict, then again for this service selection data transmission resources with And for service selection data transmission resources next time, and reselect the SA for sending the SA information pattern。

Alternatively, the processing module 41 according to following steps specifically for selecting the first data transmission Resource and the second data transmission resources：

According to the seizure condition information of each data transmission resources for meeting transmission delay demand, described the is selected One data transmission resources and the second data transmission resources.

Alternatively, the processing module 41 is additionally operable to：

After it is determined that the data transmission resources that other nodes take have conflict, carry in the SA information Indicate that the data transmission resources that other nodes take have the information for conflicting.

Alternatively, the processing module 41 according to following steps specifically for determining the number that other nodes take Exist according to transfer resource and conflict：

The SA information that different nodes send is received by transceiver module 42；If what the different nodes sent There is coincidence in data transmission resources indicated in SA information, it is determined that the data transfer money that the presence overlaps There is conflict in source.

The SA information that different nodes send is received by transceiver module 42；If the continuous N of the primary nodal point The secondary data demodulation failure that described other nodes are sent on the data transmission resources for taking, it is determined that described There is conflict in the data transmission resources that other nodes take, N is the positive integer more than or equal to 1.

As shown in figure 5, be data transmission resources reservation apparatus structural representation provided in an embodiment of the present invention, Including：

Processor 504, for reading memorizer 505 in program, perform following process：

It is based upon the first data transmission resource of this service selection of primary nodal point and for business next time The second data transmission resources for selecting, it is determined that for indicating that the first data transmission resource and the second data are passed The dispatching distribution SA information of defeated resource；

The SA information for being determined the processor 504 by transceiver 501 is sent to other nodes；

Transceiver 501, for data to be received and sent under the control of processor 504.

Alternatively, the processor 504 is additionally operable to：

Alternatively, the processor 504 according to following steps specifically for determining the first data transmission money There is conflict in source：

Alternatively, the processor 504 specifically for：

Alternatively, the processor 504 is additionally operable to：

After the SA information to be sent to other nodes by the transceiver 501, for next time Business determines before SA information, judges that second data transmission resources whether there is and conflict；If it is determined that depositing In conflict, then second data transmission resources are abandoned.

Alternatively, the processor 504 according to following steps specifically for determining the second data transfer money There is conflict in source：

Alternatively, the processor 504 specifically for：

Alternatively, the processor 504 specifically for according to following steps determine described in other nodes with it is described The distance between primary nodal point is less than setting threshold value：

The receiving power of the SA information that other nodes according to being received by transceiver 501 are sent, it is determined that The distance between described other nodes and described primary nodal point are less than setting threshold value.

Alternatively, the processor 504 specifically for：

A kind of SA pattern are randomly choosed from default various SA patterns pattern, it is described for sending SA information；Wherein, each SA pattern includes multiple SA resources.

Alternatively, the processor 504 specifically for：

Alternatively, the processor 504 according to following steps specifically for selecting the first data transmission money Source and the second data transmission resources：

Alternatively, the processor 504 is additionally operable to：

Alternatively, the processor 504 according to following steps specifically for determining the data that other nodes take There is conflict in transfer resource：

The SA information that different nodes send is received by transceiver 501；If the SA that the different nodes send There is coincidence in data transmission resources indicated in information, it is determined that the data transmission resources that the presence overlaps are deposited In conflict.

Specifically for determining that the data transmission resources that other nodes take have conflict according to following steps：

The SA information that different nodes send is received by transceiver 501；If the continuous n times of the primary nodal point To described other nodes take data transmission resources on send data demodulation failure, it is determined that it is described its There is conflict in the data transmission resources that its node takes, N is the positive integer more than or equal to 1.

In Figure 5, bus architecture (being represented with bus 500), bus 500 can include any amount Interconnection bus and bridge, bus 500 will include the one or more processors represented by processor 504 and The various circuits of the memorizer that memorizer 505 is represented are linked together.Bus 500 can also be by such as periphery Various other circuits of equipment, manostat and management circuit or the like are linked together, and these are all these Well known to field, therefore, no longer it is described further herein.EBI 503 is in bus 500 Interface is provided and transceiver 501 between.Transceiver 501 can be an element, or multiple element, Such as multiple receptors and transmitter, there is provided for the list for communicating with various other devices over a transmission medium Unit.The data of the process of Jing processors 504 are transmitted on the radio medium by antenna 502, further, The also receiving data of antenna 502 simultaneously transfers data to processor 504.

Processor 504 is responsible for bus 500 and common process, can also provide various functions, including Regularly, peripheral interface, voltage-regulation, power management and other control functions.And memorizer 505 can be with Be used to store the data that processor 504 is used when operation is performed.

Optionally, processor 504 can be CPU (centre buries device), ASIC (Application Specific Integrated Circuit, special IC), FPGA (Field-Programmable Gate Array, Field programmable gate array) or CPLD (Complex Programmable Logic Device, complexity can be compiled Journey logical device).

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can be using complete hardware embodiment, complete software embodiment or knot Close the form of the embodiment in terms of software and hardware.And, the present invention can be adopted and wherein wrapped at one or more Computer-usable storage medium containing computer usable program code (including but not limited to disk memory, CD-ROM, optical memory etc.) on implement computer program form.

The present invention is produced with reference to method according to embodiments of the present invention, device (system) and computer program The flow chart and/or block diagram of product is describing.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or square frame and flow chart and/or the flow process in block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedded The processor of formula datatron or other programmable data processing devices is producing a machine so that by calculating The instruction of the computing device of machine or other programmable data processing devices is produced for realizing in flow chart one The device of the function of specifying in individual flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

These computer program instructions may be alternatively stored in can guide computer or other programmable datas process to set In the standby computer-readable memory for working in a specific way so that in being stored in the computer-readable memory Instruction produce and include the manufacture of command device, command device realization is in one flow process or multiple of flow chart The function of specifying in one square frame of flow process and/or block diagram or multiple square frames.

These computer program instructions also can be loaded in computer or other programmable data processing devices, made Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.

, but those skilled in the art once know base although preferred embodiments of the present invention have been described This creative concept, then can make other change and modification to these embodiments.So, appended right will Ask and be intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprising these changes and modification.

Claims

1. a kind of data transmission resources reserving method, it is characterised in that the method includes：

The SA information is sent to other nodes by the primary nodal point.

2. the method for claim 1, it is characterised in that the first data transmission resource and institute The time slot position for stating the second data transmission resources is separated by a service period.

3. the method for claim 1, it is characterised in that the first data transmission resource and institute The time slot position for stating the second data transmission resources is separated by a service period, and second data transmission resources Frequency domain position compare the frequency domain position of the first data transmission resource, offset by default frequency offset Amount.

4. the method for claim 1, it is characterised in that methods described also includes：

5. method as claimed in claim 4, it is characterised in that the primary nodal point is according to following steps Determine that the first data transmission resource has conflict：

6. method as claimed in claim 5, it is characterised in that the primary nodal point is it is determined that other sections Indicate described other nodes in the SA information that point sends to take after the first data transmission resource, it is determined that There is conflict in the first data transmission resource that the primary nodal point takes, including：

7. the method for claim 1, it is characterised in that the primary nodal point is by the SA information After being sent to other nodes, also include：

8. method as claimed in claim 7, it is characterised in that the primary nodal point is according to following steps Determine that second data transmission resources have conflict：

9. method as claimed in claim 8, it is characterised in that the primary nodal point is it is determined that other sections Indicate described other nodes in the SA information that point sends to take after second data transmission resources, it is determined that There is conflict in second data transmission resources that the primary nodal point takes, including：

10. the method as described in claim 6 or 9, it is characterised in that the primary nodal point is according to following Step determines the distance between described other nodes and described primary nodal point less than setting threshold value：

11. the method for claim 1, it is characterised in that the primary nodal point believes the SA Breath is sent to other nodes, including：

12. methods as claimed in claim 11, it is characterised in that the primary nodal point is using selection The SA pattern in first SA resource send after the SA information, in the institute using selection Last the SA resource stated in SA pattern is sent before the SA information, is also included：

13. methods as claimed in claim 11, it is characterised in that the primary nodal point is using selection The SA pattern in first SA resource send after the SA information, in the institute using selection Last the SA resource stated in SA pattern is sent before the SA information, is also included：

14. the method for claim 1, it is characterised in that comprising described the in the SA information The corresponding resource information of one data transmission resources；Or, pass comprising first data in the SA information The corresponding resource information of defeated resource, and second data transmission resources and the first data transmission resource Between relation information.

15. the method for claim 1, it is characterised in that comprising described the in the SA information The positional information of one node.

16. the method for claim 1, it is characterised in that the primary nodal point is according to following steps Select the first data transmission resource and the second data transmission resources：

17. methods as claimed in claim 16, it is characterised in that the occupancy of any data transfer resource Status information include the data transmission resources it is current continuously not by any SA information be designated as it is occupied or There is the service period number of conflict.

18. methods as claimed in claim 16, it is characterised in that the occupancy of any data transfer resource Status information includes the corresponding jamming power of the data transmission resources of primary nodal point measurement.

19. the method for claim 1, it is characterised in that methods described also includes：

20. methods as claimed in claim 19, it is characterised in that the primary nodal point is according to following step Suddenly determine that the data transmission resources that other nodes take have conflict：

21. methods as claimed in claim 19, it is characterised in that the primary nodal point is according to following step Suddenly determine that the data transmission resources that other nodes take have conflict：

22. a kind of data transmission resources device for displaying predetermined, it is characterised in that the device includes：

23. devices as claimed in claim 22, it is characterised in that the first data transmission resource with The time slot position of second data transmission resources is separated by a service period.

24. devices as claimed in claim 22, it is characterised in that the first data transmission resource with The time slot position of second data transmission resources is separated by a service period, and second data transfer is provided The frequency domain position in source compares the frequency domain position of the first data transmission resource, offset by default frequency offset Amount.

25. devices as claimed in claim 22, it is characterised in that the processing module is additionally operable to：

26. devices as claimed in claim 25, it is characterised in that the processing module is specifically for root Determine that the first data transmission resource has conflict according to following steps：

27. devices as claimed in claim 26, it is characterised in that the processing module specifically for：

28. devices as claimed in claim 22, it is characterised in that the processing module is additionally operable to：

After the SA information to be sent to the transceiver module other nodes, for business next time it is true Before determining SA information, judge second data transmission resources with the presence or absence of conflict；If it is determined that there is conflict, Then abandon second data transmission resources.

29. devices as claimed in claim 28, it is characterised in that the processing module is specifically for root Determine that second data transmission resources have conflict according to following steps：

30. devices as claimed in claim 29, it is characterised in that the processing module specifically for：

31. devices as described in claim 27 or 30, it is characterised in that the processing module is specifically used In determining the distance between described other nodes and described primary nodal point less than setting thresholding according to following steps Value：

32. devices as claimed in claim 22, it is characterised in that the processing module specifically for：

33. devices as claimed in claim 32, it is characterised in that the processing module specifically for：

34. devices as claimed in claim 32, it is characterised in that the processing module specifically for：

35. devices as claimed in claim 22, it is characterised in that comprising described the in the SA information The corresponding resource information of one data transmission resources；Or, pass comprising first data in the SA information The corresponding resource information of defeated resource, and second data transmission resources and the first data transmission resource Between relation information.

36. devices as claimed in claim 22, it is characterised in that comprising described the in the SA information The positional information of one node.

37. devices as claimed in claim 22, it is characterised in that the processing module is specifically for root The first data transmission resource and the second data transmission resources are selected according to following steps：

38. devices as claimed in claim 37, it is characterised in that the occupancy of any data transfer resource Status information include the data transmission resources it is current continuously not by any SA information be designated as it is occupied or There is the service period number of conflict.

39. devices as claimed in claim 37, it is characterised in that the occupancy of any data transfer resource Status information includes the corresponding jamming power of the data transmission resources of primary nodal point measurement.

40. devices as claimed in claim 22, it is characterised in that the processing module is additionally operable to：

41. devices as claimed in claim 40, it is characterised in that the processing module is specifically for root Determine that the data transmission resources that other nodes take have conflict according to following steps：

The SA information that different nodes send is received by transceiver module；If the SA that the different nodes send There is coincidence in data transmission resources indicated in information, it is determined that the data transmission resources that the presence overlaps are deposited In conflict.

42. devices as claimed in claim 40, it is characterised in that the processing module is specifically for root Determine that the data transmission resources that other nodes take have conflict according to following steps：

The SA information that different nodes send is received by transceiver module；If the continuous n times pair of the primary nodal point Described other nodes take data transmission resources on send data demodulation failure, it is determined that it is described other There is conflict in the data transmission resources that node takes, N is the positive integer more than or equal to 1.