CN105451270B - Within a wireless communication network for determining the method and device of launch time - Google Patents
Within a wireless communication network for determining the method and device of launch time Download PDFInfo
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- CN105451270B CN105451270B CN201410380055.XA CN201410380055A CN105451270B CN 105451270 B CN105451270 B CN 105451270B CN 201410380055 A CN201410380055 A CN 201410380055A CN 105451270 B CN105451270 B CN 105451270B
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Abstract
The present invention provides the methods and device that are used to determine launch time in the network equipment of cordless communication network.Method includes the following steps: N number of subframe is divided into M subframe group；Determine that the first transmission mode collection, the first transmission mode collection include the first matrix H1With the second matrix H2In all rows in addition to the first row, the second matrix H2Equal to the first matrix H1With -1 product, the first matrix H1There are M column；Determine that the second transmission mode collection, the second transmission mode collection include third matrix H3With the 4th matrix H4, the 4th matrix H4With third matrix H3It is complementary；Transmitted traveling is selected from the first transmission mode collection and selects subframe row from the second transmission mode collection；And the transmitting and reception of business datum are carried out according to selected transmitted traveling and subframe row.Based on technical solution of the present invention, both reduce collision probability when resource allocation, and decreased the signaling overheads between transmitting terminal and receiving end, while increasing the selection of transmission mode.
Description
Technical field
The present invention relates to mobile communication technologies, more particularly to the method for determining launch time within a wireless communication network
And device.
Background technique
Device-to-device (D2D:Device-to-Device) communication the Cellular Networks enhancing project important as one
Through being introduced into LTE-Advanced.Have been carried out relevant standardization effort in 3 gpp to study D2D discovery
(Discovery) and direct communication technology.
For D2D direct communication, the broadcast communication outside coverage area will be paid the utmost attention in Release 12.D2D broadcast
The key task of communication is to support VoIP business and enhances coverage area.In order to increase coverage area, using narrowband (2 or 3
A Physical Resource Block) broadcast VoIP data packet relatively be suitble to.For biggish channel width (50 physics under 10MHz bandwidth
Resource block), it needs to carry out multiple user equipmenies frequency division multiplexing broadcast transmission and fully to use available frequency spectrum resource.So
And this can cause semiduplex limitation and with internal leakage (in-band emission), so that the receptivity of receiving end is influenced,
It is therefore desirable to design the new technical solution of one kind to solve the above problems.
Summary of the invention
Based on above-mentioned consideration, the present invention provides it is a kind of within a wireless communication network for determine launch time method and
Device.
According to the first aspect of the invention, provide it is a kind of in the network equipment of cordless communication network for determine hair
The method for penetrating the time, method includes the following steps: N number of subframe is divided into M subframe group by A.；B. the first transmission mould is determined
Formula collection, the first transmission mode collection include the first matrix H1With the second matrix H2In all rows in addition to the first row, wherein second
Matrix H2Equal to first matrix H1With -1 product, the first matrix has M column；C. determining second transmission mode collection, described second
Transmission mode collection includes third matrix H3With the 4th matrix H4, wherein the 4th matrix H4It is complementary with third matrix H 3；D. it is passed from first
Transmitted traveling is selected in defeated set of patterns and concentrates selection subframe row from the second transmission mode；And E. is according to the transmitted traveling and the subframe
Row carries out the transmitting and reception of business datum；Wherein, the first transmission mode collection emits subframe group and reception subframe group for determining,
Second transmission mode collection is used to determine the transmitting subframe in each transmitting subframe group.
Advantageously, the method also includes: the first transmission mode collection and the second transmission mode collection to be preconfigured in
In the network equipment.
It advantageously, further include emitting the transmitted traveling and the subframe row to other network equipments before the step E of this method
Information.
It advantageously, further include the transmitting about other network equipments received from other network equipments before step D
Subframe and/or the information for receiving subframe.
Advantageously, when first matrix H1Or second matrix H2Transmitted traveling in the first element be the first value when, this first
Subframe group corresponding to the position of element is transmitting subframe group；When first matrix H1Or second matrix H2Transmitted traveling
In the first element when being second value, subframe group corresponding to the position of first element is to receive subframe group, reception
All subframes in frame group are to receive subframe.
Advantageously, third matrix H3Or the 4th matrix H4The subframe row in second element instruction subframe be
Emit subframe, other subframes in the transmitting subframe group are to receive subframe, and the transmitting subframe and the reception subframe are located at the transmitting
In subframe group.
Advantageously, the step D of this method include: according to predetermined condition from the first transmission mode concentrate selection transmitted traveling and from
Second transmission mode, which is concentrated, selects the subframe row.
Advantageously, which includes at least one of the following: the first transmission mode of i. concentrate each row it is current
Service condition；Ii. the second transmission mode concentrates the currently used situation of each row；Iii. other networks that come from of current interest are set
Standby broadcast；Iv. the quality of present channel.
According to the second aspect of the invention, a kind of to be used to determine launch time in the network equipment of cordless communication network
Device, described device includes: diversity unit, is used to N number of subframe being divided into M subframe group；First determination unit,
For determining that the first transmission mode collection, the first transmission mode collection include the first matrix H1With the second matrix H2In remove the first row
All rows in addition, wherein second matrix H2Equal to first matrix H1With -1 product, first matrix has M column,
The first transmission mode collection is for determining transmitting subframe group and receiving subframe group；Second determination unit is used to determine second
Transmission mode collection, the second transmission mode collection include third matrix H3With the 4th matrix H4, wherein the 4th matrix H4With institute
State third matrix H3Complementation, the second transmission mode collection are used to determine the transmitting subframe in each transmitting subframe group；Selection is single
Member is used to concentrate selection transmitted traveling from first transmission mode and concentrates selection subframe row from second transmission mode；
And data transceiving unit, it is used to carry out the transmitting and reception of business datum according to the transmitted traveling and the subframe row.
Method and dress that a kind of transmission mode collection based on building is used to determine launch time are devised in the present invention
It sets, and the total quantity of transmission mode depends on the size of matrix.Based on technical solution of the present invention, both reduce resource allocation
When collision probability, decrease the signaling overheads between transmitting terminal and receiving end, while increasing the selection of transmission mode.With
This simultaneously, transmission mode collection according to the present invention is still able to maintain the characteristic of the transmission mode collection based on Walsh matrix.It is logical in D2D
It solves half-duplex limitation using above scheme in letter, and helps to mitigate and receiving the band internal leakage at user equipment.
Various aspects of the invention will be more clear by the explanation of embodiment in detail below.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, of the invention other
Feature, objects and advantages will become more apparent:
Fig. 1 shows the schematic diagram of the scheduling resource allocation of the 20ms of embodiment according to the present invention；
Fig. 2 shows the schematic diagrames of the transmitting subframe of embodiment according to the present invention；
Fig. 3 shows the building of embodiment according to the present invention based on the signal of the first transmission mode collection of Walsh matrix
Figure；
Fig. 4 shows the method flow diagram of the D2D communication of the progress of embodiment according to the present invention；
Fig. 5 shows the schematic diagram of the subframe group of embodiment according to the present invention；
Fig. 6 shows the schematic diagram of the second transmission mode collection of embodiment according to the present invention；
Fig. 7 shows the schematic diagram of the second transmission mode collection based on Walsh matrix of embodiment according to the present invention；
Fig. 8 shows the schematic diagram of another transmitting subframe of embodiment according to the present invention；
Fig. 9 shows the schematic diagram of another subframe group of embodiment according to the present invention；
Figure 10 shows first transmission mode collection of the building based on another Walsh matrix of embodiment according to the present invention
Schematic diagram；
Figure 11 shows the schematic diagram of another the second transmission mode collection of embodiment according to the present invention；And
Figure 12 shows the schematic device in the user equipment of embodiment according to the present invention.
Run through different diagrams in the figure, same or similar appended drawing reference indicates identical or corresponding component or spy
Sign.
Specific embodiment
In the following detailed description of the preferred embodiment, reference is constituted to the appended attached drawing of present invention a part.Institute
Attached attached drawing, which has been illustrated by way of example, can be realized specific embodiment.Exemplary embodiment is not intended to
Exhaustive all embodiments according to the present invention.It is appreciated that without departing from the scope of the present invention, can use other
Embodiment can also carry out the modification of structure or logic.Therefore, it is below specific descriptions and it is unrestricted, and this
The range of invention is defined by the claims appended hereto.It should be noted that although describing this hair in attached drawing with particular order
The step of bright middle method, but this does not require that or implies must execute these operations in this particular order, or
It is to have to carry out operation shown in whole to be just able to achieve desired as a result, on the contrary, step described herein can change and hold
Row sequence.Additionally or alternatively, it is convenient to omit multiple steps are merged into step and executed by certain steps, and/or by one
A step decomposes dimension execution of multiple steps.
Firstly, the design of D2D communication needs to consider following factors:
First, D2D communication will keep the compatibility with traditional cellular network communication using LTE frame structure:
1. resource distribution is in T/F level in LTE.
2. minimum scheduling (resource allocation) unit includes that two in a subframe (1ms) are continuous in time in LTE
Resource block is referred to as Physical Resource Block pair.The resource allocation unit of D2D communication should be the multiple of Physical Resource Block pair.
The design of second, D2D communication should be suitable for the most basic type of service of D2D communication, such as the networking telephone
(VoIP:Voice over IP) business, and VoIP business at least has the property that
1.VoIP business is periodic.The length of decoding frame is 20ms, it means that the every 20ms of speech coder is generated
VoP.
The requirement of the end-to-end delay of 2.VoIP business is 200ms.Processing time needed for deducting, D2D communication are (single
To) the admissible transmission delay of VoIP data packet be about 160ms.
Fig. 1 shows the schematic diagram of the scheduling resource allocation of 20ms according to an embodiment of the invention.Such as Fig. 1 institute
Show, every 20ms includes the user data area of 16ms and the scheduling information area of 4ms, and wherein user data area is for emitting or receiving use
User data, scheduling information area for emitting or receive scheduling information, the scheduling information include at least scheduling instruction (SA:
Scheduling Assignment) and/or synchronous signaling.
Based on link level simulation, 4 transmission of a VoIP packet progress can meet receiver reference sensitivity and believe dry make an uproar
Than the requirement that (SINR:Signal to Interference and Noise Ratio) is -107dBm.Fig. 2 shows bases
The schematic diagram of the transmitting subframe of one embodiment of the present of invention, one shares 16 subframes in Fig. 2, wherein each user equipment is available
4 subframes carry out the transmitting of VoIP data packet.
Illustrate technical solution of the present invention by taking Walsh matrix and D2D communication as an example in following description in the present invention, this
Field technical staff should be understood that technical solution of the present invention is not limited merely to Walsh matrix and D2D communication, can also
Technical solution of the present invention is realized using the deformation of any other suitable matrix or matrix, also can be applied to other logical
In letter mode.
Fig. 3 shows first transmission mode collection of the building based on Walsh matrix according to an embodiment of the invention
Schematic diagram.In Fig. 3 illustratively by taking Walsh matrix as an example, by the first matrix H1Stratum N be set as 8.By the first matrix H1
It is multiplied with -1 and obtains the second matrix H2.Because of the first matrix H1Or second matrix H2The first row be+1 or -1, cannot be effective
It indicates the transmitting in D2D communication and receives time slot, so the first row is foreclosed.In this way, being based on the first matrix H1Or second
Matrix H2In element value, user equipment can determine transmitting and received time slot.For example, when the value of the element be+1 when
It waits, which is sent；When the value of the element is -1, which is received.However, being based on such machine
System can only at most indicate the transmitting or reception of 8 subframes if each element indicates a subframe.It is therefore desirable to design one
More flexible and effective scheme is planted to indicate to be suitable for the transmitting or reception of more subframes of such as VoIP business.
Fig. 4 shows the method flow diagram of determining launch time according to an embodiment of the invention.
In step S401, N number of subframe is divided into M subframe group by user equipment.Such as illustrated in FIG. 2, one
Sharing 16 subframes can be used for user data, such as the transmission of D2D user data, then N=16.In Fig. 5,16 subframes are put down
It is divided into M=8 subframe group.In this way, there is 2 subframes in each subframe group.
In step S402, user equipment determines the first transmission mode collection, which includes the first matrix
H1With the second matrix H2In all rows in addition to the first row, wherein the second matrix H2Equal to the first matrix H1With -1 product,
One matrix has M=8 column, which is preconfigured in user equipment.
Exemplary first matrix W as shown in Figure 38,1With exemplary second matrix W8,2It is the Walsh matrix of 8x8,
I.e. each matrix contains 8x8 element.Exemplary second matrix W8,2By exemplary first matrix W8,1It is obtained multiplied by -1.Removing is shown
Example the first matrix W of property8,1With exemplary second matrix W8,2Respective the first row, each member in exemplary first and second matrix
It is transmitting subframe group or reception subframe group representated by element, the first transmission mode collection includes exemplary first matrix W8,1And example
The second matrix W of property8,2Namely first transmission mode collection have altogether include 14 kinds of transmitted traveling.
When exemplary first matrix H1Or second matrix H2Transmitted traveling in the first element row the first element be the first value
When, subframe group corresponding to the position of first element is transmitting subframe group；When first matrix H1Or second matrix H2
The transmitted traveling in first element when being second value, subframe group corresponding to the position of first element is to receive
Subframe group.
Such as exemplary second matrix W8,2The 6th row the 1st column value be -1, then its corresponding subframe group be receive subframe
Group.In another example exemplary second matrix W8,2The 6th row the 2nd column value be 1, then its corresponding subframe group be transmitting subframe group.
In step S403, user equipment determines the second transmission mode collection, which includes third matrix
H3With the 4th matrix H4, wherein the 4th matrix H4With third matrix H3Complementation, the second mode collection are preconfigured in user
In equipment.
Third matrix H3Or the 4th matrix H4Subframe row in second element instruction subframe be transmitting subframe, hair
Other subframes in subframe group are penetrated to receive subframe, transmitting subframe and reception subframe are located in transmitting subframe group.For example, second passes
Defeated set of patterns includes the exemplary third matrix E such as Fig. 64,1With the 4th matrix E4,2Namely second transmission mode collection altogether wrap
8 seed frame line are included.
For example, such as the exemplary third matrix E in Fig. 64,1In the 3rd row the 1st column value be 1, corresponding transmitting subframe
The subframe that index in group is such as 1 is transmitting subframe, and other subframes in the transmitting subframe group for example index the subframe for 0
To receive subframe.In another example such as the exemplary third matrix E in Fig. 64,1In the 3rd row the 3rd column value be 0, corresponding hair
The subframe that the index penetrated in subframe group is such as 0 is transmitting subframe, and other sons that such as index in the transmitting subframe group is 1
Frame is to receive subframe.
Exemplary third matrix E4,1With exemplary 4th matrix E4,2The smallest Hamming distance is from being 2.Exemplary third square
Battle array E4,1With exemplary 4th matrix E4,2Building be based on such as Fig. 7 middle-class be 4 Walsh matrix W4,1And its complementary square
Battle array W4,2Orthogonal property.
In step s 404, user equipment from the first transmission mode concentrates selection transmitted traveling and from second transmission mode
Concentrate selection subframe row.
Preferably, user equipment can receive from other network equipments before executing step 404 about other nets
The transmitting subframe of network equipment and/or the information for receiving subframe.
In this way, user equipment can learn the selected transmitted traveling of other user equipmenies and subframe row information, in order to
The user equipment selects to be used as when transmitted traveling and subframe row suitably to judge and to be possible from other user equipmenies
Necessary preparation is done in the reception of user data.
Preferably, user equipment can also be transmitted from the first transmission mode set and/or second respectively according to predetermined condition
Transmitted traveling and/or subframe row are selected in set of patterns.These predetermined conditions include currently making for each row that the first transmission mode is concentrated
Use situation；The currently used situation for each row that second transmission mode is concentrated；Current interest from the wide of other users equipment
It broadcasts；And/or the quality of present channel.
In this way, user equipment can be according to the most suitable transmitted traveling of one or more selections and subframe in predetermined condition
Row.
Preferably, user equipment can emit to other network equipments from the first transmission mode after executing the step 404
It concentrates the transmitted traveling of selection and concentrates the information of the subframe row of selection from the second transmission mode.
In this way, other user equipmenies can learn the transmitted traveling of the user equipment and the information of subframe row, in order to other
User equipment is made when selecting transmitted traveling and subframe row suitably to be judged and as the possible use from the user equipment
Necessary preparation is done in the reception of user data.
Exemplary second matrix W that user equipment is concentrated from the first transmission mode8,2In selected such as the 6th transmitted traveling [-
1+1-1+1+1-1+1-1].This means that subframe group 2,4,5,7 is transmitting subframe group, subframe group 1,3,6,8 is to receive subframe group,
User equipment is transmitted in transmitting subframe group 2,4,5,7.
Then, the exemplary third matrix E that user equipment is concentrated from the second transmission mode4,1In selected such as the 3rd subframe
Row [1 10 0].It is used this means that user equipment emits in the respective subframe 1,1,0,0 in transmitting subframe group 2,4,5,7
User data.It is transmitting subframe group 2 that wherein the 1st element of the 3rd subframe row, which is corresponding to the 1, the 1st element, emits subframe group 2
In have index be 0 and 1 two subframes, and the 1st element value of the 3rd subframe row be 1, it is corresponding be transmitting subframe group 2 in
The subframe that index is 1, so the subframe that index is 1 in transmitting subframe group 2 is transmitting subframe, emitting index in subframe group 2 is 0
Subframe is then to receive subframe.In another example it is transmitting subframe group that the 3rd element of the 3rd subframe row, which is corresponding to the 0, the 3rd element,
5, emitting has index in subframe group 5 be 0 and 1 two subframes, and the 3rd element value of the 3rd subframe row is 0, corresponding to be
Emit the subframe that index is 0 in subframe group 5, so being indexed in transmitting subframe group 5 as 0 subframe is transmitting subframe, emits subframe
Index is to receive subframe for 1 subframe in group 5, in this way, as shown in Fig. 2, subframe 3,7,8,12 is transmitting subframe, remaining subframe
0,1,2,4,5,6,9,10,11,13,14 and 15 be reception subframe.
Based on Walsh matrix W8,1And W8,2And its extended matrix E4,1And E4,2Characteristic, the transmission have the property that
1. each user equipment emits data packet, such as VoIP data packet 4 times.
2. for using two user equipmenies of different transmission modes, user equipment 1 can at least connect from user equipment 2
2 transmission are received, vice versa.Which solves half-duplex restricted problems.
If 2.1 user equipmenies 1 and user equipment 2 are concentrated using the first transmission mode, such as Walsh matrix W8,1And W8,2
In different transmitted traveling, user equipment 1 can at least from user equipment 2 receive 2 times transmission, vice versa, this is by Walsh
What the characteristic of matrix determined.
2.2. if user equipment 1 and user equipment 2 are concentrated using the first transmission mode, such as Walsh matrix W8,1With
W8,2In identical transmitted traveling and the second transmission mode concentrate, such as extended matrix E4,1And E4,2In different subframe rows, use
Family equipment 1 at least can receive 2 transmission from user equipment 2, and vice versa, this is because extended matrix E4,1And E4,2Any two
The smallest Hamming distance is from being 2 between row.
3. total adoptable transmission mode is 14x8=112 kind.
In step S405, user equipment is passed according to the transmitted traveling for concentrating selection from the first transmission mode and from described second
The subframe row selected in defeated set of patterns carries out the transmitting and reception of business datum, and the first transmission mode collection is for determining transmitting subframe
Group and reception subframe group, the second transmission mode collection are used to determine the transmitting subframe in each transmitting subframe group.
As shown in Figure 2 and Figure 5, subframe group 2,4,5,7 be transmitting subframe collection, and subframe group 1,3,6,8 is to receive subframe collection, hair
Penetrating the subframe that respectively index is 1,1,0,0 in subframe collection 2,4,5,7 is transmitting subframe, remaining subframe is to receive subframe.Namely it uses
Family equipment executes transmitting user data in subframe 3,7,8,12, and the user for receiving other user equipmenies is executed in other subframes
Data.
Based on above step, being transmitted several times for data packet, such as VoIP data packet is carried out at random in time domain, is subtracted in this way
Lack in receiving end with interior leakage problem.And the transmission mode of technical solution of the present invention can realize randomization effect in time domain
It answers.
Once in Walsh matrix W8,1And W8,2With extended matrix E4,1And E4,2In selected transmitted traveling and subframe row, emit
Time determines that the determination of launch time allows receiving end conveniently receive/merge to data packet.If
Emit user data before, transmission mode information namely such as launch time can as it is shown in Fig. 1 go out in user data area
Emit in scheduling information area before, it will be able to efficiently reduce signaling overheads.Exemplary Walsh matrix W8,1And W8,2One is shared
14 kinds of transmitted traveling can be indicated with 4 bits；Exemplary extended matrix E4,1And E4,2One 8 seed frame line of shared selection can use 3 ratios
Spy indicates, therefore the required bit number for indicating transmission mode is 7.
The size of exemplary Walsh matrix in the present invention can according to application scenarios, the characteristic of data packet transmission and
Available sub-frame number is set.Fig. 8 shows the schematic diagram of another transmitting subframe according to an embodiment of the invention,
One shares 8 subframes for user data transmission, wherein each user equipment can carry out the hair of data packet with 2 subframes in Fig. 8
It penetrates.
Firstly, having 2 sons in each subframe group as shown in figure 9,8 subframes are divided into 4 subframe groups by user equipment
Frame.
First transmission mode collection includes exemplary first matrix W4,1With the second matrix W4,2In it is all in addition to the first row
Row.Exemplary first matrix W as shown in Figure 104,1With exemplary second matrix W4,2It is the Walsh matrix of 4x4, namely every
A matrix contains 4x4 element.Exemplary second matrix W4,2By exemplary first matrix W4,1It is obtained multiplied by -1.It removes exemplary
First matrix W4,1With exemplary second matrix W4,2Respective the first row, exemplary first W4,1With the second matrix W4,2Each of
It is transmitting subframe group or reception subframe group representated by element, the first transmission mode collection includes exemplary first matrix W4,1With show
Example the second matrix W of property4,2Namely first transmission mode collection have altogether include 6 kinds of transmitted traveling.
When exemplary first matrix W4,1The 3rd row the 1st column value be 1, then its corresponding subframe group be transmitting subframe group.
In another example exemplary first matrix W4,1The 3rd row the 3rd column value be -1, then its corresponding subframe group be receive subframe group.
Correspondingly, the second transmission mode collection includes the exemplary third matrix E such as Figure 112,1With the 4th matrix E2,2,
That is it includes 4 seed frame line that the second transmission mode collection, which has altogether,.
Such as the exemplary third matrix E in Figure 112,1In the values of the 2nd row the 1st column be 1, in corresponding transmitting subframe group
Index be such as 1 subframe be transmitting subframe, and the subframe of other subframes such as index bit 0 in the transmitting subframe group be connect
Receive subframe.In another example such as the exemplary third matrix E in Fig. 62,1In the values of the 2nd row the 2nd column be 0, corresponding transmitting is sub
The subframe that index in frame group is such as 0 is transmitting subframe, and such as index in the transmitting subframe group is for 1 other subframes
Receive subframe.
Exemplary third matrix E2,1With exemplary 4th matrix E2,2The smallest Hamming distance is from being 1.Exemplary third square
Battle array E2,1With exemplary 4th matrix E2,2Building be based on stratum be 2 Walsh matrix W2,1And its complementary matrix W2,2's
Orthogonal property.
User equipment concentrates selection transmitted traveling from the first transmission mode and concentrates selection subframe from second transmission mode
Row.In conjunction with Figure 10 and Figure 11, W of the user equipment from the first transmission mode4,1In selected the 2nd transmitted traveling [+1-1+1-1], from
E has been selected in 2 transmission modes2,1The 2nd subframe row [1 0] namely user equipment selected subframe Isosorbide-5-Nitrae (as illustrated in FIG. 8) into
Row transmitting.
Similarly, it is based on Walsh matrix W4,1And W4,2And extended matrix E2,1And E42,2Characteristic, the transmission have as follows
Characteristic:
1. each user equipment emits data packet 2 times.
2. for using two user equipmenies of different transmission modes, user equipment 1 can at least connect from user equipment 2
1 transmission is received, vice versa.Which solves half-duplex restricted problems.
If 2.1 user equipmenies 1 and user equipment 2 are concentrated using the first transmission mode, such as Walsh matrix W4,1And W4,2
In different transmitted traveling, user equipment 1 can at least from user equipment 2 receive 1 time transmission, vice versa, this is by Walsh
What the characteristic of matrix determined.
2.2. if user equipment 1 and 2 first transmission mode of user equipment are concentrated, such as Walsh matrix W4,1And W4,2In
Identical transmitted traveling and the second transmission mode concentrate, such as extended matrix E2,1And E2,2In different subframe rows, Yong Hushe
Standby 1 at least can receive 1 transmission from user equipment 2, and vice versa, this is because extended matrix E2,1And E2,2Any two row it
Between the smallest Hamming distance from being 1.
3. total adoptable transmission mode is 6x4=24 kind.
Such as the exemplary Walsh matrix W of Figure 104,1And W4,2One shares 6 kinds of transmitted traveling, can be indicated with 3 bits；It is exemplary
Extended matrix E2,1And E2,2One 4 seed frame line of shared selection, can be indicated, therefore required expression transmission mode with 2 bits
Bit number be 5.
Figure 12 is shown in the network equipment for cordless communication network for determining the device 100 of launch time.Device
100 for example can be or may be implemented to set in the user above in association with the progress D2D communication in embodiment described in Fig. 4
It is standby.
As shown in figure 8, device 100 includes diversity unit 110, it is used to N number of subframe being divided into M subframe group；The
One determination unit 120 is used to determine that the first transmission mode collection, the first transmission mode collection to include the first matrix H1With the second matrix
H2In all rows in addition to the first row, wherein the second matrix H2Equal to the first matrix H1With -1 product, the first matrix has M column；
Second determination unit 130 is used to determine the second transmission mode collection, which includes third matrix H3With the 4th
Matrix H4, wherein the 4th matrix H4With third matrix H3It is complementary；Selecting unit 140 is used to concentrate selection from the first transmission mode
Transmitted traveling and from the second transmission mode concentrate selection subframe row；And data transmitting unit 150, it is used to transmit according to from first
The transmitted traveling that selects in set of patterns and the subframe row of selection is concentrated to carry out the transmitting and reception of business datum from the second transmission mode,
First transmission mode collection is for determining transmitting subframe group and receiving subframe group, and the second transmission mode collection is for determining each transmitting
Transmitting subframe in frame group.
It will be understood by those skilled in the art that technical solution of the present invention is not limited in retouching in the embodiment of the present invention
Specific parameter in the LTE system stated, but other any suitable parameters can be used, for example, different matrixes is big
It is small, the different the number of transmissions of data packet and the different demarcation in scheduling information area and user data area.
Although technical solution of the present invention, technical solution of the present invention are illustrated in the present invention by taking user equipment as an example
It can be applied not only to D2D communication, it can also should be between any other network equipment using technical solution of the present invention
Communication.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
How from the point of view of, the present embodiments are to be considered as illustrative and not restrictive.In addition, it will be evident that one word of " comprising " not
Exclude other elements and steps, and wording "one" be not excluded for plural number.The multiple element stated in device claim can also
To be implemented by one element.The first, the second equal words are used to indicate names, and are not indicated any particular order.
Claims (17)
1. a kind of method in the network equipment of cordless communication network for determining launch time, this method includes following step
It is rapid:
A. N number of subframe is divided into M subframe group；
B. determine that the first transmission mode collection, the first transmission mode collection include the first matrix H1With the second matrix H2In respectively remove
All rows other than the first row, wherein second matrix H2Equal to first matrix H1With -1 product, first matrix
There are M column；
C. the second transmission mode collection is determined, the second transmission mode collection includes third matrix H3With the 4th matrix H4, wherein described
4th matrix H4With the third matrix H3It is complementary；
D. selection transmitted traveling is concentrated from first transmission mode and concentrate selection subframe row from second transmission mode；And
E. the transmitting and reception of business datum are carried out according to the transmitted traveling and the subframe row；
Wherein, the first transmission mode collection is for determining transmitting subframe group and receiving subframe group, the second transmission mode collection
For determining the transmitting subframe in each transmitting subframe group.
2. according to the method described in claim 1, wherein, further includes:
The first transmission mode collection and the second transmission mode collection are preconfigured in the network equipment.
3. according to the method described in claim 1, wherein, before the step E further including to described in the transmitting of other network equipments
The information of transmitted traveling and the subframe row.
4. according to the method described in claim 1, further including receiving from other network equipments before the step D wherein
About other network equipments transmitting subframe and/or receive subframe information.
5. according to the method described in claim 1, wherein, when first matrix H1Or second matrix H2The transmitting
When the first element in row is the first value, subframe group corresponding to the position of first element is transmitting subframe group；When described
First matrix H1Or second matrix H2The transmitted traveling in first element be second value when, first element
Position corresponding to subframe group be receive subframe group.
6. according to the method described in claim 5, wherein, all subframes received in subframe group are to receive subframe.
7. according to the method described in claim 1, wherein, the third matrix H3Or the 4th matrix H4The subframe row
In second element instruction subframe be transmitting subframe, it is described transmitting subframe group in other subframes be receive subframe, the hair
It penetrates subframe and the reception subframe is located in the transmitting subframe group.
8. according to the method described in claim 1, wherein, the step D includes:
It is concentrated according to predetermined condition from first transmission mode and selects the transmitted traveling and concentrated from second transmission mode
Select the subframe row.
9. according to the method described in claim 8, wherein, the predetermined condition includes at least one of the following:
I. the currently used situation for each row that first transmission mode is concentrated；
Ii. second transmission mode concentrates the currently used situation of each row；
Iii. the broadcast from other network equipments of current interest；
Iv. the quality of present channel.
10. a kind of device for being used to determine launch time in the network equipment of cordless communication network, described device include:
Diversity unit is used to N number of subframe being divided into M subframe group；
First determination unit is used to determine that the first transmission mode collection, the first transmission mode collection to include the first matrix H1With
Two matrix Hs2In respective all rows in addition to the first row, wherein second matrix H2Equal to first matrix H1With -1
Product, first matrix have M column, and the first transmission mode collection is for determining transmitting subframe group and receiving subframe group；
Second determination unit is used to determine that the second transmission mode collection, the second transmission mode collection to include third matrix H3With
Four matrix Hs4, wherein the 4th matrix H4With the third matrix H3Complementation, the second transmission mode collection are each for determining
Emit the transmitting subframe in subframe group；
Selecting unit is used to concentrate selection transmitted traveling from first transmission mode and concentrate from second transmission mode to select
Select subframe row；And
Data transceiving unit is used to carry out the transmitting and reception of business datum according to the transmitted traveling and the subframe row.
11. device according to claim 10, wherein further include:
It is pre-configured unit, is used to the first transmission mode collection and the second transmission mode collection being pre-configured in the net
In network equipment.
12. device according to claim 10, wherein further include
Scheduling information transmitting unit is used to emit to other network equipments the information of the transmitted traveling and the subframe row；With
And
Scheduling information receiving unit is used to receive the transmitting subframe about other network equipments from other network equipments
And/or receive the information of subframe.
13. device according to claim 10, wherein when first matrix H1Or second matrix H2The hair
When the first element penetrated in row is the first value, the corresponding subframe group of first element is transmitting subframe group；When first square
Battle array H1Or second matrix H2The transmitted traveling in first element be second value when, first element is corresponding
Subframe group is to receive subframe group.
14. device according to claim 10, wherein all subframes are to receive subframe in the reception subframe group.
15. device according to claim 10, wherein the third matrix H3Or the 4th matrix H4The subframe
The subframe of second element instruction in row is transmitting subframe, and other subframes in the transmitting subframe group are to receive subframe, described
Transmitting subframe and the reception subframe are located in the transmitting subframe group.
16. device according to claim 10, wherein the selecting unit further include:
Second selecting unit, is used to be concentrated according to predetermined condition from first transmission mode and selects the transmitted traveling and from institute
It states the second transmission mode and concentrates the selection subframe row.
17. device according to claim 16, wherein the predetermined condition includes at least one of the following:
I. the currently used situation for each row that first transmission mode is concentrated；
Ii. second transmission mode concentrates the currently used situation of each row；
Iii. the broadcast from other network equipments of current interest；
Iv. the quality of present channel.
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| CN1278971A (en) * | 1997-09-15 | 2001-01-03 | 自动电信公司 | Practical space-time radio method for cdma communication capacity enhancement |
| CN1307761A (en) * | 1998-06-29 | 2001-08-08 | L-3通讯公司 | PN code selection for synchronous CDMA |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278971A (en) * | 1997-09-15 | 2001-01-03 | 自动电信公司 | Practical space-time radio method for cdma communication capacity enhancement |
| CN1307761A (en) * | 1998-06-29 | 2001-08-08 | L-3通讯公司 | PN code selection for synchronous CDMA |
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| D2D channel design for broadcast communication;Alcatel-Lucent Shanghai Bell, Alcatel-Lucent;《3GPP TSG RAN WG1 Meeting #76bis》;20140322;全文 |
| Resource allocation for D2D broadcast communication;Alcatel-Lucent Shanghai Bell, Alcatel-Lucent;《3GPP TSG RAN WG1 Meeting #77》;20140510;全文 |
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