CN105337713B - A kind of method and apparatus of the subframe of the discovery resource for distribution type 2b - Google Patents
A kind of method and apparatus of the subframe of the discovery resource for distribution type 2b Download PDFInfo
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- CN105337713B CN105337713B CN201410387752.8A CN201410387752A CN105337713B CN 105337713 B CN105337713 B CN 105337713B CN 201410387752 A CN201410387752 A CN 201410387752A CN 105337713 B CN105337713 B CN 105337713B
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Abstract
The method and apparatus that the present invention relates to a kind of in the network equipment of D2D communication for the subframe of the discovery resource of distribution type 2b.This method includes：The discovery resource of type 2b and Class1 are set in discovery resource pool, and wherein at least part in N number of subframe of the discovery resource of type 2b is arranged to be distributed with the subframe interlacing compartment of terrain of the discovery resource of Class1；N number of subframe is divided into M subframe group；Determine the first transmission mode collection；Determine the second transmission mode collection；Construct channel mapping matrix P0, channel mapping matrix P0In each element respectively be for type 2b discovery resource N number of subframe in L subframe index；The subframe of the discovery resource of distribution type 2b.Based on technical solution of the present invention, the utilization efficiency of transfer resource can be improved, avoid interfering with each other between subframe and realize time diversity.Furthermore it can also promote the discovery of the type 2b of minizone, frequency band is kept not to be segmented, realize frequency diversity.
Description
Technical field
The present invention relates to mobile communication technologies, more particularly to for distribution type 2b's in the network equipment of D2D communication
It was found that the method and apparatus of the subframe of resource.
Background technique
As the important technology of LTE-Advanced, device-to-device (D2D) communication based on cellular network can be brought
It improves the availability of frequency spectrum, mitigate the advantages such as cellular network burden.Currently, equipment discovery (discovery) technology at
For a research emphasis of D2D communication.
For D2D device discovery techniques, presently, there are two different discovery types：The discovery and type of Class1
2 discovery.The discovery of Class1 refers to that the resource for being used for transmission discovery signaling is not distributed directly to each user equipment (UE),
But it is pooled in a resource pool so that each UE takes；And the discovery of type 2 refers to that discovery signaling will be used for transmission
Resource allocation gives each UE.The discovery of type 2 can be subdivided into the discovery of type 2a and the discovery of type 2b again.Wherein, type
The discovery of 2a refers to that resource is dynamically distributed to each UE, and each transmission requires base station and is allocated；And type 2b
It was found that refer to that resource is distributed to each UE quasi-staticly, primary distribution can be supported to be transmitted several times, to reduce signaling
Expense.
It is not disclosed the method for the discovery resource for distributing 2b type in the prior art.Although having existed
For the discussion of the frequency-hopping mode of the discovery resource of 2b type, however, the frequency-hopping mode discussed is only a kind of periodic
T/F matrix (such as M discovery channel in N number of time subframe), the channel distribution based on the frequency-hopping mode lacks
Scalability and the flexible channeling transmitted with ascending honeycomb.In addition, be also not disclosed in the prior art cell it
Between coordinate type 2b discovery resource distribution and optimization frequency band mapping technical solution, the present invention will propose the new 2b of one kind
The distribution method of the subframe of the discovery resource of type is to solve these problems.
Summary of the invention
The purpose of the present invention is to provide a kind of discovery resources that distribution type 2b is used in the network equipment of D2D communication
Subframe method and apparatus.
To achieve the goals above, according to the first aspect of the invention, it provides a kind of in the network equipment of D2D communication
The method of the subframe of discovery resource for distribution type 2b, the described method comprises the following steps：A) it is set in discovery resource pool
The discovery resource of type 2b and the discovery resource of Class1 are set, wherein in N number of subframe of the discovery resource of the type 2b at least
A part is arranged to be distributed with the subframe interlacing compartment of terrain of the discovery resource of the Class1；B) N number of subframe is divided into M
A subframe group；C) determine that the first transmission mode collection, the first transmission mode collection include the first matrix H by delete operation1
With the second matrix H2, wherein the delete operation includes deleting first matrix H1With second matrix H2The first row or
Person deletes first matrix H1With second matrix H2The first row and any other a line, and wherein second square
Battle array is equal to the product of first matrix and -1, and first matrix by delete operation and the second matrix are respectively provided with M column
With D row；D) determine that the second transmission mode collection, the second transmission mode collection include third matrix H3With the 4th matrix H4, wherein institute
State the 4th matrix H4With the third matrix H3It is complementary and be respectively provided with L rows and L columns；E) according to the first transmission mode collection
Channel mapping matrix P is constructed with the second transmission mode collection0, the channel mapping matrix P0In each element be needle respectively
To the index of L subframe in N number of subframe of the discovery resource of the type 2b；And i) according to the channel mapping matrix P0
Distribute the subframe of the discovery resource of the type 2b.In this way, on the one hand, cellular transmission can with discovery resource pool
The discovery signalling of middle setting type 2b carries out channeling and is furthermore possible to improve the utilization efficiency of transfer resource
It avoids interfering with each other between subframe and easily realizes the time diversity of sub-frame transmission；On the other hand, it can be communicated in D2D
Middle solution half-duplex limitation, and help to mitigate during the discovery of type 2b with interior interference.
Preferably, the step e) in the method further includes：E1 the 5th matrix H 5) is constructed, wherein the 5th matrix H 5
It is arranged with 2 rows and D, and the element of the first row in the 5th matrix H 5 is first matrix by delete operation
The element of line index, the second row in the 5th matrix H 5 is the line index of second matrix by delete operation；e2)
The 6th matrix H 6 is constructed, wherein there are the 6th matrix H 62 rows and L to arrange, and the first row in the 6th matrix H 6
Element is the line index of the third matrix, and the element of the second row in the 6th matrix H 6 is the row rope of the 4th matrix
Draw；And e3) the 5th matrix H 5 and the 6th matrix H 6 be combined into the channel mapping matrix P0, wherein described
There are channel mapping matrix P0 4 rows and D*L to arrange, and wherein the element of the channel mapping matrix P0 is by the 5th matrix
In each element in the 6th matrix each element constitute line index combine.
It is further preferred that further including step f) after the step e) of the method：According to the channel mapping matrix
P0 constructs the first channel mapping matrix modification P1 and second channel mapping matrix modification P2, wherein by the channel mapping matrix P0
All rows the first columns of cyclic shift is reflected first channel with constituting the first channel mapping matrix modification P1 to the left
Penetrate all rows of matrix modification P1 to the left the second columns of cyclic shift to constitute the second channel mapping matrix modification P2；And
The step i) further includes：The channel mapping matrix P0, the first channel mapping matrix modification are chosen according to predetermined criterion
The P1 or second channel mapping matrix modification P2 where the network equipment to distribute the hair of the type 2b in cell
The subframe of existing resource；The predetermined criterion is to carry out mould 3 to the physical area call number of place cell to operate, according to operating result
Choose the channel mapping matrix P0, the first channel mapping matrix modification P1 and the second channel mapping matrix modification P2
In one.In this way, the hair of the type 2b of minizone is promoted in a manner of almost without inter-cell coordination signaling
It is existing.
It selects a step preferably, further includes step g) after the step f) of the method：By the channel mapping matrix P0,
Each of the first channel mapping matrix modification P1 and the second channel mapping matrix modification P2 are by column from being used for
The both ends of the frequency band of the subframe of the discovery resource of the discovery type 2b are transmitted to being medially mapped on the frequency band, wherein institute
The each column stated in channel mapping matrix are mapped in multiple time slots of transmission frequency having the same.In this way,
When the discovery resource of type 2 is multiplexed by cellular transmission, the frequency band for being able to maintain cellular transmission is not segmented.
It is further preferred that further including step h) after the step g) of the method：To the type 2b's by mapping
It was found that the subframe of resource carries out frequency hopping operation.In this way, it can be easily implemented frequency diversity.
It is further preferred that the network equipment includes base station and user equipment.In this way, it can reduce and be used for
The signaling of the subframe of the discovery resource of distribution type 2, has saved transfer resource.
It is further preferred that the network equipment is patrolled what is distributed ascendingly when the network equipment is base station
The user equipment that the maximum logical channel number in channel number is broadcast to the discovery resource of the usage type 2b in cell is collected, wherein
The logical channel number corresponds to the channel mapping matrix P0, the first channel mapping matrix modification P1 and second letter
Element in road mapping matrix modification P2.In this way, it can be avoided the unnecessary reception test for D2D discovery,
To reduce the power consumption of user equipment.
According to the second aspect of the invention, provide it is a kind of in the network equipment of D2D communication for distribution type 2b
It was found that the device of the subframe of resource, described device include：Setting unit is used to be arranged in discovery resource pool the hair of type 2b
The discovery resource of existing resource and Class1, wherein at least part in N number of subframe of the discovery resource of the type 2b is set
It is distributed for the subframe interlacing compartment of terrain of the discovery resource with the Class1；Diversity unit is used to N number of subframe being divided into M
A subframe group；First determination unit is used to determine that the first transmission mode collection, the first transmission mode collection to include by deleting
First matrix H of operation1With the second matrix H2, wherein the delete operation includes deleting first matrix H1With described second
Matrix H2The first row or delete first matrix H1With second matrix H2The first row and any other a line, and
And wherein second matrix is equal to the product of first matrix and -1, first matrix and second by delete operation
Matrix is respectively provided with M column and D row；Second determination unit is used to determine the second transmission mode collection, the second transmission mode collection
Including third matrix H3With the 4th matrix H4, wherein the 4th matrix H4With the third matrix H3It is complementary and be respectively provided with L
Capable and L column；Road mapping matrix structural unit is used for according to the first transmission mode collection and the second transmission mode collection structure
Make channel mapping matrix P0, the channel mapping matrix P0In each element be discovery resource for the type 2b respectively
N number of subframe in L subframe index；And allocation unit, it is used for according to the channel mapping matrix P0Described in distribution
The subframe of the discovery resource of type 2b.
Cellular transmission and the discovery resource of type 2b can be multiplexed, to mention by technical solution according to the present invention
The high utilization efficiency of transfer resource, also can be avoided interfering with each other and being easy between the subframe of the discovery resource of type 2b
The time diversity of ground realization sub-frame transmission.Solve half-duplex limitation using technical solution according to the present invention in D2D communication,
And help to mitigate during the discovery of type 2b with interior interference.In addition, technical solution according to the present invention, it can be with several
Without inter-cell coordination signaling mode promote minizone type 2b discovery, while being able to maintain and being multiplexed by cellular transmission
Frequency band be not segmented.Technical solution according to the present invention, additionally it is possible to realize frequency diversity, save between base station and user equipment
The technical purpose of the power consumption of transfer resource and reduction user equipment.
Various aspects of the invention will be more clear by the explanation of embodiment in detail below.
Detailed description of the invention
Fig. 1 shows the method flow of the subframe of the discovery resource for distribution type 2b of embodiment according to the present invention
Figure；
Fig. 2 shows the configuration schematic diagrams of the discovery resource of the Class1 of embodiment according to the present invention and type 2b；
Fig. 3 shows the schematic diagram of the subframe of the discovery resource of the type 2b of embodiment according to the present invention；
Fig. 4 shows the schematic diagram of the first transmission mode collection of embodiment according to the present invention；
Fig. 5 shows the schematic diagram of the second transmission mode collection of embodiment according to the present invention；
The schematic diagram for the Walsh matrix that the second transmission mode collection that Fig. 6 shows embodiment according to the present invention is based on；
Fig. 7 shows the schematic diagram of the 5th matrix of embodiment according to the present invention；
Fig. 8 shows the schematic diagram of the 6th matrix of embodiment according to the present invention；
Fig. 9 show embodiment according to the present invention by the 5th matrix and the 6th matrix construction channel mapping matrix
Schematic diagram；
Figure 10 shows the schematic diagram of the channel mapping matrix of embodiment according to the present invention；
Figure 11 shows becoming by channel mapping matrix the first channel mapping matrix of construction for embodiment according to the present invention
The schematic diagram of type and second channel mapping matrix modification；
What Figure 12 showed embodiment according to the present invention is mapped to showing on frequency band for the first channel mapping matrix modification
It is intended to；
Figure 13 shows the schematic diagram of the frequency hopping operation of embodiment according to the present invention；And
Figure 14 shows the hair that distribution type 2b is used in the network equipment of D2D communication of embodiment according to the present invention
The schematic diagram of the device of the subframe of existing resource.
Specific embodiment
Fig. 1 shows the method flow of the subframe of the discovery resource for distribution type 2b of embodiment according to the present invention
Figure.
In step s101, the discovery resource of type 2b and the discovery of Class1 is arranged in discovery resource pool in the network equipment
Resource, wherein at least part in N number of subframe of the discovery resource of the type 2b is arranged to and the discovery resource of Class1
The distribution of subframe interlacing compartment of terrain.For example, as shown in Fig. 2, FDD (frequency division duplex) up-link carrier includes D2D discovery resource pool, is used for
The resource of PUCCH (physical uplink control channel), and the resource for cellular services.Wherein, resource pool is found in D2D
In illustratively provided with type 2b discovery resource have altogether N=16 subframe, 16 subframes of the discovery resource of type 2b
In a part (being illustratively first four) and multiple Class1 discovery resource subframe interlacing compartment of terrain distribution.Preferably,
Also the subframe that all discovery resources can be arranged both is set to and the subframe interlacing compartment of terrain of the discovery resource of the Class1 point
Cloth.
In step s 102, N number of subframe is divided into M subframe group by the network equipment.For example, as shown in figure 3, to simplify
See, 16 subframes of the discovery resource of type 2b shown in figure 2 is adjacent to arrangement, wherein the discovery resource of type 2b
Exemplary M=8 subframe group and each subframe group of being divided into of 16 subframes include two continuous subframes.
In step s 103, the network equipment determines the first transmission mode collection, which includes by deleting
First matrix H of operation1With the second matrix H2, wherein the delete operation includes deleting the first matrix H1With the second matrix H2?
A line deletes the first matrix H1With the second matrix H2The first row and any other a line, and wherein second matrix etc.
In the first matrix and -1 product, first matrix Jing Guo delete operation and the second matrix are respectively provided with M column and D row.
For example, as shown in figure 4, the first matrix H1With the second matrix H2Illustratively 8 × 8 Walsh matrix, namely it is every
A matrix contains 8 × 8 elements.Matrix H1Equal to matrix H2With -1 product.Illustratively puncture table H1And H2The first row
And fifth line, thus the matrix H by the delete operation1And H2It is respectively provided with 8 column and D=6 row.
In the first matrix H1With the second matrix H2In, element "+1 " is illustratively indicated using corresponding subframe group transmission hair
Existing signal, and element " -1 " is illustratively indicated without using corresponding subframe group transmission discovery signal.
In step S104, the network equipment determines the second transmission mode collection, which includes third matrix
H3With the 4th matrix H4, wherein the 4th matrix H4With third matrix H3It is complementary and be respectively provided with L rows and L columns.Here, L is root
It is determined according in the discovery resource for the 2b type that the network equipment is single user's distribution for the quantity of the subframe of transmission.
For example, as shown in figure 5, third matrix H3With the 4th matrix H4Illustratively 4 × 4 predetermined matrices H3And H4, should
Predetermined matrices H3And H4Building be the Walsh matrix W based on as shown in Figure 64 × 44And its complementary matrix W4' just
Hand over characteristic.Here, the network equipment be single user distribution discovery resource subframe quantitative example be 4, therefore, be arranged
Third matrix H3With the 4th matrix H4It is respectively provided with L=4 row and L=4 column.
In third matrix H3With the 4th matrix H4In, element " 0 " is illustratively indicated using first subframe in subframe group
It is transmitted, and element " 1 " illustratively indicates to be transmitted using second subframe in subframe group.For example, leading in Fig. 3
Crossing sub-frame configuration scheme shown in dash area is by the second matrix H2The 6th row and third matrix H3The third line determine jointly
's.Specifically, pass through the second matrix H2The 6th row [- 1+1-1+1+1-1+1-1] it is found that the 2nd in 8 subframe groups,
4,5,7 subframe groups can be used for transmission discovery signal, pass through third matrix H3The third line [1 10 0] it is found that upper
It in the subframe group of 4, face, is the 2nd, 2,1,1 subframe in two subframes respectively for being transmitted, it follows that in Fig. 3
The allocation plan shown.
In step s105, the network equipment maps square according to the first transmission mode collection and the second transmission mode collection construction channel
Battle array P0, channel mapping matrix P0In each element be L in N number of subframe for the discovery resource of type 2b respectively
The index of frame.For example, as shown in Figure 10, channel mapping matrix P0The element (6 ', 3) that middle the third line the 19th arranges is 16 subframes
In the index of 4 subframes as shown in dash area in Fig. 3.Here, channel mapping matrix illustratively has altogether 2 × D
× 2 × L=2 × 6 × 2 × 4=96 index element.
In step s 106, the network equipment is according to channel mapping matrix P0The subframe of the discovery resource of distribution type 2b.
Method according to figure 1, on the one hand, pass through N number of discovery resource of setting type 2b in discovery resource pool
Subframe, cellular transmission can be multiplexed with the discovery signalling of set type 2b.Therefore, pass through the tolerance that will be delayed
Lower ascending honeycomb transmission is arranged in the discovery resource of not used type 2b, and can be improved transfer resource utilizes effect
Rate.In addition, at least part in the N number of subframe for passing through the discovery resource of type 2b is arranged to the discovery resource with Class1
Subframe interlacing compartment of terrain distribution, can be avoided interfering with each other between the subframe of the discovery resource of type 2b and easily reality
The time diversity of existing sub-frame transmission.
On the other hand, since transmission mode collection used by above is still able to maintain the transmission mode collection based on Walsh matrix
Characteristic.Therefore, this solves half-duplex limitation in D2D communication, and helps to mitigate during the discovery of type 2b
With interior interference.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
It in step s105 further comprise three sub-steps in formula.
In the first sub-step, the 5th matrix H of Network Device Construction5, wherein the 5th matrix H5It is arranged with 2 rows and D, and
And the 5th matrix H5In the first row element be the first matrix by delete operation line index, the 5th matrix H5In
The element of two rows is the line index of the second matrix by delete operation.For example, as shown in fig. 7, the 5th matrix H5Illustratively
For 2 × 6 matrix.
In the second sub-step, the 6th matrix H of Network Device Construction6, wherein the 6th matrix H6It is arranged with 2 rows and L, and
6th matrix H6In the first row element be third matrix line index, the 6th matrix H6In the element of the second row be the 4th
The line index of matrix, for example, as shown in figure 8, the 6th matrix H6Illustratively 2 × 4 matrix.
In third sub-step, the network equipment is by the 5th matrix H5With the 6th matrix H6It is combined into map channel matrix P0,
The wherein map channel matrix P0It is arranged with 4 rows and D*L, and the wherein map channel matrix P0Element be by described
Each element in 5th matrix is combined with the line index that each element in the 6th matrix is constituted.
For example, as shown in figure 9, channel mapping matrix P0First row four elements by the 5th matrix H5First row
Two elements and the 6th matrix H6First row two arrangement of elements combination and constitute, channel mapping matrix P0Second
Four elements of column are then by the 5th matrix H5First row two elements and the 6th matrix H6Secondary series two arrangement of elements
It combines and constitutes, constitute channel mapping matrix P according to identical rule0Third column and the 4th column.And channel mapping matrix P0's
Four elements of the 5th column are then by the 5th matrix H5Secondary series two elements and the 6th matrix H6First row two elements
Permutation and combination and constitute, according to above-mentioned rule, constitute channel mapping matrix P0All column.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
It further include the first optional step after step S105 in formula, i.e., according to the channel mapping matrix P0The first channel is constructed to reflect
Penetrate matrix modification P1With second channel mapping matrix modification P2, wherein by the channel mapping matrix P0All rows recycle to the left
The first columns is shifted to constitute the first channel mapping matrix modification Pi, by the first channel mapping matrix modification P1Institute
There is capable the second columns of cyclic shift to the left to constitute the second channel mapping matrix modification P2。
For example, as shown in figure 11, illustratively the first columns and the second columns are both configured to D*L/3=8.Therefore, show
Example property is by channel mapping matrix P0All rows to the left cyclic shift 8 arrange to constitute the first channel mapping matrix modification P1, will
First channel mapping matrix modification P1All rows to the left cyclic shift 8 arrange to constitute second channel mapping matrix modification P2.Scheming
First channel mapping matrix modification P shown in 111With second channel mapping matrix modification P2An only example, first row
Several and the second columns also can be other columns being not much different with D*L/3.In addition, when only existing two neighbouring cells
In the case of, the first columns and the second columns can be the columns being not much different with D*L/2.
On the basis of implementing the first optional step, step S106 further includes choosing channel mapping matrix according to predetermined criterion
P0, the first channel mapping matrix modification P1 or second channel mapping matrix modification P2To be distributed in cell where the network equipment
The subframe of the discovery resource of type 2b.The predetermined criterion is to carry out mould 3 to the physical area call number of place cell to operate, according to
Operating result chooses channel mapping matrix P0, the first channel mapping matrix modification P1With second channel mapping matrix modification P2In
One.For example, then 2 are obtained to the 5 progress operations of mould 3, to show that the cell should when the physical area call number of cell is 5
Choose second channel mapping matrix modification P2To distribute subframe.
By channel mapping matrix P0, the first channel mapping matrix modification P1With second channel mapping matrix modification P2Respectively
In the case where distributing to three cells adjacent in network, for example, the first logical channel correspond respectively to channel mapping matrix P0,
The element (2,1), (4,1) and (7,1) of P1 and P2.According to the orthogonality of Walsh matrix, it can be found that, three type 2b's
It was found that each can receive another two transmission in conveyer.Therefore, according to above embodiment, with almost without
The mode of inter-cell coordination signaling promotes the discovery of the type 2b of minizone.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
It can also include the second optional step after the first optional step, i.e., by channel mapping matrix P in formula0, the first channel mapping
Matrix modification P1With second channel mapping matrix modification P2Each of by column from be used for transmission discovery type 2b discovery provide
The both ends of the frequency band of the subframe in source are to being medially mapped on the frequency band, and wherein each column in channel mapping matrix are mapped
Into multiple time slots of transmission frequency having the same.
As shown in figure 12, by taking the first channel mapping matrix modification P1 as an example, first row, which is mapped to, is used for transmission discovery
The top of the frequency band of the subframe of the discovery resource of type 2b, then, secondary series is mapped to the bottom of the frequency band.It
Afterwards, third column not shown in the figure are mapped to the top for being close to frequency band and are located at the band position of lower section topmost, and
The band position that 4th column not shown in the figure are mapped to the bottom for being close to frequency band and are located above bottom.According to this
Rule can continue to other column of the first channel mapping matrix modification P1 of mapping.
According to above embodiment, can not therefrom between separate carrier wave, so that the discovery resource as type 2b is passed by honeycomb
When defeated multiplexing, the frequency band for being able to maintain cellular transmission is not segmented.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
It can also include third optional step, i.e. the discovery resource to the type 2b by mapping after the second optional step in formula
Subframe carry out frequency hopping operation.
As shown in Figure 12 and Figure 13, it is exchanged according to template [0,0,1,1......0,0,1,1] positioned at the top of frequency band
Sub-frame resources and be located at frequency band the lowermost sub-frame resources.Wherein, which is illustratively the matrix of 1 row 16 column, works as square
It when array element element is 0, does not exchange between corresponding sub-frame resources, when matrix element is 1, is sent out between corresponding sub-frame resources
Raw exchange.Although the present invention is for being located at a pair of of matrix column of outermost end, the frequency hopping operation in the present invention also can
Applied in a pair of of matrix column of any other corresponding position.Therefore, it according to above embodiment, can be easily implemented
Frequency diversity.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
In formula, the network equipment includes base station and user equipment.According to above embodiment, base station side and user equipment side can be pre-
The allocation rule of the subframe of the discovery resource of type 2b is first known, so that base station only need to be by L be used to indicate in N number of subframe son
The line index combination of frame is sent to user equipment, it will be able to implement distribution.This reduces the discovery resource for distribution type 2
The signaling of subframe, to save transfer resource.
In a kind of preferred embodiment party of the method for the subframe of the discovery resource for distribution type 2b according to the present invention
In formula, when the network equipment is base station, the network equipment believes the maximum logic in the logical channel number distributed ascendingly
Taoist monastic name is broadcast to the user equipment of the discovery resource of the usage type 2b in cell, and wherein logical channel number corresponds to the channel
Mapping matrix P0, the first channel mapping matrix modification P1With second channel mapping matrix modification P2In element.
For example, as shown in Figure 10, the network equipment is by channel mapping matrix P0In element column then one from left to right
Column ground is corresponded with ascending logical channel number.Such as when the network equipment has given 5 user equipmenies to be assigned with type
When the subframe of the discovery resource of 2b, maximum logical channel number 4 is correspondingly broadcast to the usage type in cell by the network equipment
The user equipment of the discovery resource of 2b.The user equipment of unallocated discovery resource will not attempt reception and believe greater than logic as a result,
Signal in the corresponding logic channel of Taoist monastic name 4, L i.e. corresponding sub-frame resources.By above embodiment, can keep away
Exempt from the unnecessary reception test for D2D discovery, to reduce the power consumption of user equipment.
Figure 14 shows a kind of dress in the network equipment of D2D communication for the subframe of the discovery resource of distribution type 2b
Set 100.Device 100 can be or can be realized above in association in embodiment described in Fig. 1 for distribution type
The device of the subframe of the discovery resource of 2b.
As shown in figure 14, device 100 includes setting unit 110, is used to be arranged in discovery resource pool the hair of type 2b
The discovery resource of existing resource and Class1, wherein at least part in N number of subframe of the discovery resource of type 2b be arranged to and
The subframe interlacing compartment of terrain of the discovery resource of Class1 is distributed；Diversity unit 120 is used to N number of subframe being divided into M subframe group；
First determination unit 130 is used to determine that the first transmission mode collection, the first transmission mode collection to include first by delete operation
Matrix H1With the second matrix H2, wherein the delete operation includes deleting the first matrix H1With the second matrix H2The first row or delete
Except the first matrix H1With the second matrix H2The first row and any other a line, and wherein the second matrix be equal to the first matrix and-
1 product, the first matrix and the second matrix by delete operation are respectively provided with M column and D row；Second determination unit 140 is used
In determining that the second transmission mode collection, the second transmission mode collection include third matrix H3With the 4th matrix H4, wherein the 4th matrix H4With
Third matrix H3It is complementary and be respectively provided with L rows and L columns；Channel mapping matrix structural unit 150 is used for according to the first transmission
Set of patterns and the second transmission mode collection construct channel mapping matrix P0, channel mapping matrix P0In each element be directed to respectively
The index of L subframe in N number of subframe of the discovery resource of type 2b；And allocation unit 160, it is used to be mapped according to channel
Matrix P0The subframe of the discovery resource of distribution type 2b.
Although specific embodiments of the present invention have been described above, those skilled in the art can be in appended power
Benefit makes various changes and modifications in the range of requiring.
Claims (15)
1. a kind of method in the network equipment of D2D communication for the subframe of the discovery resource of distribution type 2b comprising with
Lower step：
A) the discovery resource of type 2b and the discovery resource of Class1 are set in discovery resource pool, wherein the hair of the type 2b
At least part in N number of subframe of existing resource is arranged to and the subframe interlacing compartment of terrain of the discovery resource of the Class1 point
Cloth；
B) N number of subframe is divided into M subframe group；
C) determine that the first transmission mode collection, the first transmission mode collection include the first matrix H by delete operation1With second
Matrix H2, wherein the delete operation includes deleting first matrix H1With second matrix H2The first row or deletion
First matrix H1With second matrix H2The first row and any other a line, and wherein second matrix is equal to
First matrix and -1 product, first matrix by delete operation and the second matrix are respectively provided with M column and D row；
D) determine that the second transmission mode collection, the second transmission mode collection include third matrix H3With the 4th matrix H4, wherein described
4th matrix H4With the third matrix H3It is complementary and be respectively provided with L rows and L columns；
E) channel mapping matrix P is constructed according to the first transmission mode collection and the second transmission mode collection0, the channel reflects
Penetrate matrix P0In each element respectively be for the type 2b discovery resource N number of subframe in L subframe index；
And
I) according to the channel mapping matrix P0Distribute the subframe of the discovery resource of the type 2b.
2. the method according to claim 1, wherein the step e) includes the following steps：
E1 the 5th matrix H) is constructed5, wherein the 5th matrix H5It is arranged with 2 rows and D, and the 5th matrix H5In
The element of a line is the line index of first matrix by delete operation, the 5th matrix H5In the second row element
It is the line index of second matrix by delete operation；
E2 the 6th matrix H) is constructed6, wherein the 6th matrix H6It is arranged with 2 rows and L, and the 6th matrix H6In
The element of a line is the line index of the third matrix, the 6th matrix H6In the element of the second row be the 4th matrix
Line index；And e3) by the 5th matrix H5With the 6th matrix H6It is combined into the channel mapping matrix P0,
Described in channel mapping matrix P0It is arranged with 4 rows and D*L, and the wherein channel mapping matrix P0Element be by described the
Each element in five matrixes is combined with the line index that each element in the 6th matrix is constituted.
3. method according to claim 1 or 2, which is characterized in that after the step e) further include step f)：
F) according to the channel mapping matrix P0Construct the first channel mapping matrix modification P1With second channel mapping matrix modification
P2, wherein by the channel mapping matrix P0All rows to the left the first columns of cyclic shift to constitute first channel mapping
Matrix modification P1, by the first channel mapping matrix modification P1All rows the second columns of cyclic shift is described to constitute to the left
Second channel mapping matrix modification P2；And
The step i) further includes：
The channel mapping matrix P is chosen according to predetermined criterion0, the first channel mapping matrix modification P1Or described second
Channel mapping matrix modification P2The subframe of the discovery resource of the type 2b is distributed in cell where the network equipment；
The predetermined criterion is to carry out mould 3 to the physical area call number of place cell to operate, chosen according to operating result described in
Channel mapping matrix P0, the first channel mapping matrix modification P1With the second channel mapping matrix modification P2In one.
4. according to the method described in claim 3, it is characterized in that, further including step g) after the step f)：
G) by the channel mapping matrix P0, the first channel mapping matrix modification P1Become with the second channel mapping matrix
Type P2Each of by column from be used for transmission it is described discovery type 2b discovery resource subframe frequency band both ends in
Between be mapped on the frequency band, wherein each column in the channel mapping matrix are mapped to transmission frequency having the same
Multiple time slots in.
5. according to the method described in claim 4, it is characterized in that, further including step h) after the step g)：
H) frequency hopping operation is carried out to the subframe of the discovery resource of the type 2b by mapping.
6. the method according to claim 1, wherein first matrix H1With second matrix H2For Walsh
Matrix.
7. the method according to claim 1, wherein the network equipment includes base station and user equipment.
8. according to the method described in claim 3, it is characterized in that, when the network equipment be base station when, the network equipment
Maximum logical channel number in the logical channel number distributed ascendingly is broadcast to the hair of the usage type 2b in cell
The user equipment of existing resource, wherein the logical channel number corresponds to the channel mapping matrix P0, first channel mapping
Matrix modification P1With the second channel mapping matrix modification P2In element.
9. a kind of device in the network equipment of D2D communication for the subframe of the discovery resource of distribution type 2b comprising：
Setting unit is used to that the discovery resource of type 2b and the discovery resource of Class1 to be arranged in discovery resource pool, wherein institute
It states at least part in N number of subframe of the discovery resource of type 2b and is arranged to subframe with the discovery resource of the Class1
Staggeredly compartment of terrain is distributed；
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 passing through delete operation
The first matrix H1With the second matrix H2, wherein the delete operation includes deleting first matrix H1With second matrix
H2The first row or delete first matrix H1With second matrix H2The first row and any other a line, and its
Described in the second matrix be equal to first matrix and -1 product, first matrix and the second matrix by delete operation
It is respectively provided with M column and D row；
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 H3It is complementary and be respectively provided with L rows and L columns；
Channel mapping matrix structural unit is used to be constructed according to the first transmission mode collection and the second transmission mode collection
Channel mapping matrix P0, the channel mapping matrix P0In each element respectively be for the type 2b discovery resource N
The index of L subframe in a subframe；And
Allocation unit is used for according to the channel mapping matrix P0Distribute the subframe of the discovery resource of the type 2b.
10. device according to claim 9, which is characterized in that the channel mapping matrix structural unit includes：
5th matrix construction subelement is used to construct the 5th matrix H5, wherein the 5th matrix H5It is arranged with 2 rows and D, and
And the 5th matrix H5In the first row element be first matrix by delete operation line index, the described 5th
Matrix H5In the second row element be second matrix by delete operation line index；
6th matrix construction subelement is used to construct the 6th matrix H6, wherein the 6th matrix H6It is arranged with 2 rows and L, and
And the 6th matrix H6In the first row element be the third matrix line index, the 6th matrix H6In second
Capable element is the line index of the 4th matrix；And
Channel mapping matrix combines subelement, is used for the 5th matrix H5With the 6th matrix H6It is combined into described
Channel mapping matrix P0, wherein the channel mapping matrix P0It is arranged with 4 rows and D*L, and the wherein channel mapping matrix P0
Element be combined by each element in the 5th matrix with the line index that each element in the 6th matrix is constituted.
11. device according to claim 9 or 10, it is characterised in that further include：
Channel mapping matrix modified construction unit is used for according to the channel mapping matrix P0Construct the first channel mapping matrix
Modification P1With second channel mapping matrix modification P2, wherein by the channel mapping matrix P0All rows cyclic shift to the left
One columns is to constitute the first channel mapping matrix modification P1, by the first channel mapping matrix modification P1All rows to
Left the second columns of cyclic shift is to constitute the second channel mapping matrix modification P2；
The allocation unit is also used to choose the channel mapping matrix P according to predetermined criterion0, the first channel mapping matrix
Modification P1Or the second channel mapping matrix modification P2To distribute the type 2b's in cell where the network equipment
It was found that the subframe of resource；
The predetermined criterion is to carry out mould 3 to the physical area call number of place cell to operate, chosen according to operating result described in
Channel mapping matrix P0, the first channel mapping matrix modification P1With the second channel mapping matrix modification P2In one.
12. device according to claim 11, it is characterised in that further include：
Map unit is used for the channel mapping matrix P0, the first channel mapping matrix modification P1With second letter
Road mapping matrix modification P2Each of by column from be used for transmission it is described discovery type 2b discovery resource subframe frequency
The both ends of band are to being medially mapped on the frequency band, wherein each column in the channel mapping matrix are mapped to phase
In multiple time slots of same transmission frequency.
13. device according to claim 9, it is characterised in that further include：
Frequency agility unit is used to carry out frequency hopping operation to the subframe of the discovery resource of the type 2b by mapping.
14. device according to claim 9, which is characterized in that first matrix H1With second matrix H2For
Walsh matrix.
15. device according to claim 11, which is characterized in that when described device is located in base station, described device is also
Including：
Radio unit, the maximum logical channel number in logical channel number that the radio unit is used to distribute ascendingly
It is broadcast to the user equipment of the discovery resource of the usage type 2b in cell, wherein the logical channel number corresponds to the channel
Mapping matrix P0, the first channel mapping matrix modification P1With the second channel mapping matrix modification P2In element.
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| CN103037517A (en) * | 2011-09-29 | 2013-04-10 | 中兴通讯股份有限公司 | Wireless communication method, wireless communication system and base station |
| CN103906174A (en) * | 2012-12-26 | 2014-07-02 | 华为技术有限公司 | Device discovery method and terminal |
| CN103929727A (en) * | 2013-01-14 | 2014-07-16 | 美国博通公司 | Discovery |
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| US8839362B2 (en) * | 2006-07-31 | 2014-09-16 | Motorola Mobility Llc | Method and apparatus for managing transmit power for device-to-device communication |
| US9008585B2 (en) * | 2012-01-30 | 2015-04-14 | Futurewei Technologies, Inc. | System and method for wireless communications measurements and CSI feedback |
| US20140177536A1 (en) * | 2012-12-21 | 2014-06-26 | Research In Motion Limited | Network-managed direct device to device communications |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037517A (en) * | 2011-09-29 | 2013-04-10 | 中兴通讯股份有限公司 | Wireless communication method, wireless communication system and base station |
| CN103906174A (en) * | 2012-12-26 | 2014-07-02 | 华为技术有限公司 | Device discovery method and terminal |
| CN103929727A (en) * | 2013-01-14 | 2014-07-16 | 美国博通公司 | Discovery |
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