CN104144519B - The method and apparatus that equipment is communicated for equipment - Google Patents
The method and apparatus that equipment is communicated for equipment Download PDFInfo
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- CN104144519B CN104144519B CN201310172979.6A CN201310172979A CN104144519B CN 104144519 B CN104144519 B CN 104144519B CN 201310172979 A CN201310172979 A CN 201310172979A CN 104144519 B CN104144519 B CN 104144519B
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Abstract
The embodiment of the present invention is related to the method and apparatus communicated for equipment to equipment.When to execute D2D communication between two user equipmenies in cellular communication system, the resource for D2D communication, such as communication bandwidth and carrier frequency can be distributed from the resource for be formerly used for cellular communication by the base station of cellular communication system.User equipment then can use the resource distributed base station and execute D2D communication.In this way, it is possible to be neatly multiplexed in a frequency domain to D2D link and cellular link, the problems such as considering the compatible power imbalances with while cost in solution D2D communication and with interior interference.
Description
Technical field
The embodiment of the present invention is related to the communication technology, logical to equipment more particularly, to the equipment in cellular communication system
The method and apparatus of letter.
Background technique
Equipment has been proposed to equipment (Device-to-Device, D2D) communication mechanism as to for example drilling for a long time
Into the enhancing of cellular communication systems such as (Long Term Evolution).In D2D communication, user equipment in close proximity to one another
(UE) usually with the communication channel of high quality between, and therefore can be with higher data transfer rate direct communication.D2D communicates energy
It enough realizes many benefits, such as mitigates the workload of base station (BS).
Many cellular communications networks of such as LTE provide the transmission mechanism of frequency division multiplexing, for multiple user equipmenies
Data transmission on cellular link is multiplexed in a frequency domain.When D2D communication is integrated in such communication system, it may be desirable to
The superperformance of frequency division multiplexing can be retained.However, the power imbalances between D2D link and cellular link may cause the two nothing
Method effectively coexists.By taking LTE system as an example, frequency domain is divided into multiple resource blocks (RB).For example, the band width of each RB
It can be 180Kz, and can have 12 subcarriers.Assuming that the channel width of cellular communication system is 20MHz, then each use
Family equipment can use 1 to 100 RB to carry out data transmission.In the ideal case, different subcarriers is orthogonal
, so that being assigned into frequency between the user equipment of difference RB will not interfere with each other.However in practice, due to transceiver
In hardware in frequency shift (FS) that may be present, the problems such as PA is non-linear, distribute between the subcarrier of different user devices
Orthogonality may be destroyed.Such case is referred to as Power leakage.Power leakage from a user equipment may interfere with
To the user equipment closed in RB, this phenomenon is known as with interior interference.
When D2D link is incorporated to cellular communication system, base station may be the use of the execution uplink on cellular link
Family equipment distributes biggish power, it may be considerably beyond power used in D2D link.This power imbalances may cause sternly
Weight with interior interference so that the desired signal in D2D link is set in cellular link with the user of high-power communication
Standby signal is flooded.Therefore, even if distributing the orthogonal resource in frequency domain for D2D link and cellular link, it is also difficult to guarantee D2D
Link and the effective of cellular link coexist.
Based on discussed above, there is a need in the art for a kind of for supporting what the D2D in cellular communication system communicated more to have
The scheme of effect.
Summary of the invention
In order to overcome the above problem in the prior art, the present invention proposes a kind of method and apparatus for D2D communication.
In one aspect of the invention, provide at a kind of the first user equipment in a cellular communication system for execute with
The method that the equipment of second user equipment in the cellular communication system communicates equipment (D2D).It is directed to this method comprises: obtaining
The resource allocation information of D2D communication, the resource allocation information are determined and are referred at least to by the base station in the cellular communication system
Show the dedicated channel bandwidth and carrier frequency for D2D communication；And using resource indicated by the resource allocation information come
Execute D2D communication.
In another aspect of this invention, the base station of one kind in a cellular communication system is provided for supporting the cellular communication
The method that the equipment between the first user equipment and second user equipment in system communicates equipment (D2D).This method comprises:
The request communicated for the D2D is received from first user equipment；In response to the request, it is determined whether first user is allowed to set
The standby D2D communication between the second user equipment；And be allowed in response to D2D communication, to first user equipment
The resource allocation information for D2D communication is sent, which at least indicates the dedicated channel for D2D communication
Bandwidth and carrier frequency.
In still another aspect of the invention, provide at a kind of the first user equipment in a cellular communication system for execute with
The device that the equipment of second user equipment in the cellular communication system communicates equipment (D2D).The device includes: to obtain list
Member is configured as obtaining the resource allocation information for D2D communication, and the resource allocation information is by the cellular communication system
Base station is determining and at least instruction is used for dedicated channel bandwidth and carrier frequency that the D2D is communicated；And D2D communication unit, quilt
It is configured to execute D2D communication using resource indicated by the resource allocation information.The embodiment of this respect further includes including
The user equipment of this device.
In another aspect of the invention, the base station of one kind in a cellular communication system is provided for supporting the cellular communication
The device that the equipment between the first user equipment and second user equipment in system communicates equipment (D2D).The device includes:
Receiving unit is configured as receiving the request communicated for the D2D from first user equipment；Approved unit is configured as ringing
It should be in the request, it is determined whether the D2D between first user equipment and the second user equipment is allowed to communicate；And resource
Allocation unit is configured to respond to D2D communication and is allowed to, the money communicated for the D2D is sent to first user equipment
Information is distributed in source, which at least indicates the dedicated channel bandwidth and carrier frequency for D2D communication.This respect
Embodiment further include the base station comprising this device.
By being described below it will be understood that, according to an embodiment of the invention, ought such as LTE etc radio honeycomb communication system
It, can be by the base station of cellular communication system from being formerly used for honeycomb when executing D2D communication between two user equipmenies in system
Resource (for example, communication bandwidth and carrier frequency) of the distribution for D2D communication in the resource of communication.User equipment then can be with
D2D is executed using the resource that base station is distributed to communicate.In this way, it is possible to neatly in a frequency domain to D2D link and honeycomb chain
Road is multiplexed.Particularly, according to some embodiments, the communication bandwidth that base station is distributed, which for example can be in cellular system, to be provided
Predetermined channel bandwidth.It, can be right since user equipment is commonly equipped with the filter for these predetermined channel bandwidth
These filters are effectively switched and are multiplexed, to eliminate power imbalances in D2D communication and the problems such as with interior interference.And
And the embodiment of the present invention has good compatibility with existing base station and user equipment, and is cost-effective.
Detailed description of the invention
The following detailed description is read with reference to the accompanying drawings, the above-mentioned and other purposes of the embodiment of the present invention, feature and
Advantage will become prone to understand.In the accompanying drawings, several embodiments of the invention are shown by way of example rather than limitation,
Wherein:
Fig. 1 shows the embodiment of the present invention and can realize in the schematic block diagram of environment therein；
Fig. 2-Fig. 4 shows the schematic diagram of the resource allocation according to an embodiment of the present invention for D2D communication；
Fig. 5 shows the schematic flow chart of the method for D2D communication of an exemplary embodiment of the present invention；
Fig. 6 shows the schematic flow chart of the method for D2D communication of an exemplary embodiment of the present invention；
Fig. 7 shows the schematic block diagram of the device for D2D communication of an exemplary embodiment of the present invention；And
Fig. 8 shows the schematic block diagram of the device for D2D communication of an exemplary embodiment of the present invention.
In various figures, identical or corresponding label indicates identical or corresponding part.
Specific embodiment
Several exemplary embodiments shown in below with reference to the accompanying drawings describe the principle and spirit of the invention.It should manage
Solution describes these embodiments just for the sake of making those skilled in the art can better understand that realizing the present invention in turn, and simultaneously
It is non-to limit the scope of the invention in any way.
General thought of the invention is: when two user equipmenies in the radio honeycomb communication system of such as LTE etc it
Between to execute D2D communication when, can be distributed and be used for from the resource for be formerly used for cellular communication by the base station of cellular communication system
The resource (for example, private communication bandwidth and carrier frequency) of D2D communication.User equipment then can use what base station was distributed
Resource executes D2D communication.In this way, it is possible to be neatly multiplexed in a frequency domain to D2D link and cellular link.Especially
Ground, according to some embodiments, the communication bandwidth that base station is distributed for example can be predetermined channel bandwidth specified in cellular system.
Since user equipment is commonly equipped with the filter for these predetermined channel bandwidth, can have to these filters
The switching and multiplexing of effect, to eliminate power imbalances in D2D communication and the problems such as with interior interference.Moreover, the embodiment of the present invention
There is good compatibility with existing base station and user equipment, and be cost-effective.
Fig. 1 is referred to first below, and it illustrates the embodiment of the present invention can realize in cellular communication system 100 therein
Schematic block diagram.As shown in Figure 1, cellular communication system may include one or more user equipment 101-1,101-2,
... 101-n (can be collectively referred to as " user equipment 101 " below) and one or more base stations 102.Note that although in figure only
A base station 102 is shown, but the scope of the present invention is not limited to the number of base station.User equipment 101 and base station 102 can
To execute cellular communication according to the various agreements appropriate such as LTE or standard.
Traditionally, when two user equipmenies (for example, user equipment 101-1 and user equipment 101-2) in system 100 are held
When row D2D is communicated, if other user equipment (for example, user equipment 101-3) and communication of the base station 102 on cellular link
Power is larger, then may cause the interference to D2D link.According to an embodiment of the invention, this defect can obtain effectively
Overcome.
Specifically, according to an embodiment of the invention, two user equipmenies in close proximity to one another (such as user equipment 101-1
Wish to communicate directly with one another with user equipment 101-2) at this point, any one of the two user equipmenies can be to base station
102 issue D2D communication request.For the sake of discussing conveniently, assume to initiate D2D communication by user equipment 101-1 in the following description
Request.According to an embodiment of the invention, the D2D communication request may include user equipment 101-1 and user equipment 101-2 respectively
Unique identifier.Optionally, the D2D communication request can also include expection will be in user equipment 101-1 and user equipment
The data volume transmitted on D2D link between 101-2.D2D communication request can also include other it is any communicated with D2D it is related
Information, the scope of the present invention are not limited in this respect.
After receiving D2D request, base station 102 can determine that user equipment 101-1 is with user equipment 101-2 first
It is no to be suitably executed D2D communication.For example, base station 102 can be based on following one or more because usually determining whether that user sets
Standby 101-1 executes D2D with user equipment 101-2 and communicates: the distance between user equipment 101-1 and user equipment 101-2 (whether
It is close enough), the characteristic and/or state of user equipment 101-1 and/or user equipment 101-2, transmit included in D2D request
Data volume, etc..
D2D is allowed to communicate if base station 102 determines, base station 102 can correspondingly distribute the money for D2D communication
Source.Some embodiments according to the present invention, the resource that base station 102 can be communicated according to scheduled rule distribution for D2D.Example
Such as, by taking LTE frequency division duplex (FDD) mode as an example, base station 102 can by uplink (UL) channel width it is pre-selected certain
A little specific bandwidths and carrier wave distribute to D2D communication.Alternatively or additionally, base station 102 can also be according to such as cellular communication system
System 100 in current communication status and dynamically distribute for D2D communication resource.For example, in certain embodiments, Lai Ziyong
It may include anticipatory data transmission quantity in the D2D request of family equipment.In these embodiments, base station 102 can be according to the transmission
Data volume is dynamically selected resource.For example, base station 102, which can choose, is currently available that the channel for being most suitable for the volume of transmitted data
Bandwidth and corresponding carrier frequency.The device characteristics and/or current state of user equipment 101-1 and/or user equipment 101-2
Consideration can be equally included into.
Some embodiments according to the present invention, the channel width for distributing to D2D communication can come from UL bandwidth, such as LTE
UL bandwidth in fdd mode.Particularly, some embodiments according to the present invention, it is dedicated for distributing to the channel width of D2D communication
's.In other words, it will be used only for D2D communication and is no longer used for any communication on cellular link.In cellular system
Other channel widths then still can be used for cellular communication.
Some embodiments according to the present invention can be cellular communication by the channel width that D2D communication is distributed in base station 102
One of preset channel bandwidth specified in system 100.As an example, defined at present in LTE system six it is available
Different channels bandwidth, as shown in the table.In order to communicate in LTE system, each user equipment has been typically equipped with corresponding mould
Quasi- and/or digital filter, to handle for being directed to this six channel widths the data sent and received, to subtract
Small-power is revealed and with interior interference.Some embodiments according to the present invention, can be to one point in these predetermined channel bandwidth
It is used in D2D communication, this will be explained below.
| Channel width (MHz) | Resource block number |
| 1.4 | 6 |
| 3 | 15 |
| 5 | 25 |
| 10 | 50 |
| 15 | 75 |
| 20 | 100 |
Optionally, base station 102 can also determine the execution period for D2D communication and/or number.For example, according to this hair
Bright some embodiments, base station 102 can specify the communication of the D2D between user equipment and be periodically executed according to the specific period.With
This mode facilitates the expense for reducing control signaling.
Next, base station 102 generates resource allocation information, which is used to indicate to user equipment by base station
102 distribute to the resource of D2D communication.The resource allocation information is sent to hair from base station 102 for example in a manner of signaling message
Play the user equipment 101-1 of D2D communication request.As described above, according to an embodiment of the invention, the resource point that base station 102 generates
The private communication bandwidth and carrier frequency communicated for D2D can be at least indicated with message.According to certain alternative embodiments, the money
Source distribution information also can indicate that execution period and number of D2D communication, etc..
Some embodiments according to the present invention, other than sending resource allocation message to user equipment 101-1, base station
102 can also be sent to resource allocation information user equipment 101-2.Alternatively or additionally, which can also
It is forwarded from user equipment 101-1 to user equipment 101-2, rather than user equipment 101-2 is directly sent to by base station 102.
After receiving resource allocation information from base station 102, user equipment 101-1 and user equipment 101-2 utilize money
Indicated resource directly carries out D2D communication in source distribution information.Particularly, as described above, the channel width distributed can be with
It is one of predetermined channel bandwidth specified in cellular communication system 100.At this point, the user equipment in D2D communication can use original
This various analog and/or digital filter for designing for cellular communication handles the data to transmit on D2D link.Still
LTE system is so considered, as described above, the user equipment run in such systems has been typically equipped with and has been advised for LTE system
The filter of fixed predetermined channel bandwidth (for example, six predetermined frequency bands shown in upper table).In this case, user equipment
101-1 and user equipment 101-2 can respectively switch over the filter for being previously used for cellular communication.Filter after switching
It is used for the treatment of the data transmitted in D2D communication.For example, user equipment, which can use, to be cut when sending data on D2D chain road
Filter after changing reduces undesirable transmitting；When receiving data on D2D chain road, the filter after can use switching is refused
Power leakage in exhausted adjacent channel.In this manner it is possible to effectively utilize the existing hardware device of user equipment to eliminate bee
The power leakage of nest chain road is interfered caused by D2D link, without increasing excessive hardware cost.Therefore, reality of the invention
Applying example and existing base station and user equipment has good compatibility, and is cost-effective.
According to an embodiment of the invention, the letter for utilizing base station 102 to distribute in user equipment 101-1 and user equipment 101-2
While road bandwidth is communicated, other channel widths in cellular communication system 100 are still preserved for cellular link.Change speech
It, the user equipment including user equipment 101-1 and user equipment 101-2 still can carry out normally with base station 102
Cellular communication.One specific example is described below with reference to Fig. 2.
In the embodiment shown in Figure 2, it is assumed that available uplink (UL) and downlink (DL) in cellular system 100
Channel width is respectively 20MHz.According to the D2D communication request from user equipment 101-1, base station 102 can for example believe UL
3MHz in road bandwidth distributes to D2D communication.At this point, in D2D communication cycle, user equipment 101-1 and user equipment 101-2
The channel width of this 3MHz be can use to execute D2D communication.At this point, each user equipment still is able to utilize other 17MHz
UL channel width execute the cellular communication with base station 102.Moreover, original DL channel width (20MHz) is unaffected.Change speech
It, each user equipment including the user equipment in D2D communication can be monitored on cellular link comes from base station
The message of 102 communication, such as signaling etc.
It note that in cellular communication system 100, there may be arbitrarily carry out D2D communication to user equipment.For example,
While user equipment 101-1 and user equipment 101-2 carries out D2D communication, user equipment 101-3 and 101-4 can be to base stations
102 requests execute D2D communication.At this point, user equipment 101-3 and 101-4 can according to above with respect to user equipment 101-1 and
Similar fashion described in 101-2 is communicated with base station 102, and obtains the corresponding D2D communication resource.For example, base station 102 can be with
D2D allocation of communications carrier frequency f between user equipment 101-1 and 101-21, and distribute the channel width of 3MHz.Together
When, D2D allocation of communications carrier frequency f of the base station 102 also between user equipment 101-3 and user equipment 101-42And 5MHz
Channel width.
At this point, user equipment 101-1 and 101-2 use distributed 3MHz channel width to carry out D2D communication, and user sets
Distributed 5MHz channel width is then used to communicate between standby 101-3 and user equipment 101-4.If it is still assumed that cellular communication
The available channel bandwidth of FDD UL in system is 20MHz, then in D2D communication cycle, each use in cellular communication system 100
The FDD UL bandwidth that remaining 12MHz (=20MHz-3MHz-5MHz) can be used in family equipment retains to be used for cellular communication, such as
Shown in Fig. 3.
Particularly, some embodiments according to the present invention, the resource for distributing to D2D communication can occupy entire channel strip
It is wide.For example, continuing in example described above, can be communicated with the D2D of 101-2 and user equipment for user equipment 101-1
D2D between 101-3 and 101-4 communicates the FDD DL bandwidth for distributing 10MHz respectively.As a result, as shown in figure 4, communicating week in D2D
Interim, all channel widths of the FDD UL of LTE are all used for D2D communication, and no remaining bandwidth can be used for cellular communication.When
So, FDD DL frequency band can be still used to monitor the communication from base station 102 by user equipment.
It note that in Fig. 2-embodiment shown in Fig. 4, the D2D communication between user equipment is determined according to base station 102
Period be periodically executed.It is beneficial for doing so, such as can reduce signaling overheads, but it is not necessary to.According to certain
A little alternative embodiments, the interval that D2D communication executed between the period can be different.For example, base station 102 can by signaling come
When explicitly control can execute D2D communication between equipment.The scope of the present invention is not limited in this respect.
It shall yet further be noted that above description is only exemplary.It, can in the case where not departing from spirit and thought of the invention
To make various modifications and replacement to the embodiment of the present invention.For example, thought and principle proposed by the invention is equally applicable to
Time division duplex (TDD) communication system.For example, D2D communication can be executed in the ascending time slot of LTE TDD, such as when using one
The some or all of bandwidth of gap.
Referring now to Figure 5, it illustrates the flow charts of the method 500 according to an embodiment of the present invention for D2D communication.Root
According to the embodiment of the present invention, method 500 can be executed in user equipment side.For the sake of illustrating clearly, the user for executing this method is set
Standby referred to as the first user equipment, and be referred to as with the first user equipment based on another user equipment that D2D link is communicated
Second user equipment.
As shown in figure 5, in step S501, being obtained for being communicated with the D2D of second user equipment after method 500 starts
Resource allocation information.According to an embodiment of the invention, the resource allocation information is determined by the base station in cellular communication system, and
And at least instruction is used for dedicated channel bandwidth and carrier frequency that D2D is communicated.Optionally, according to some embodiments, the resource point
At least one of also can indicate that the execution period of D2D communication with information and execute number.
It is described at step S501 to obtain resource allocation information when the first user equipment is the initiator of D2D request
It may include: to send the request communicated for D2D to base station；And base station in response is received in the resource of request and determination from base station
Distribute information.Alternatively, when D2D requests to be initiated by second user equipment, the first user equipment can directly be received from base station
For the resource allocation information of D2D communication；Alternatively, alternatively receiving the resource allocation information from second user equipment.
Particularly, some embodiments according to the present invention, the D2D communication request sent to base station may include D2D communication
Anticipatory data transmission quantity.At this point, resource allocation information can be determined based on volume of transmitted data by base station.
Next, method 500 proceeds to step S502, resource indicated by resource allocation information, Lai Zhihang are utilized herein
D2D between first user equipment and second user equipment is communicated.Particularly, in certain embodiments, the use determined by base station
In D2D communication dedicated channel bandwidth be one of preset channel bandwidth specified in cellular communication system, for example, preset channel band
Six preset channel bandwidth in the wide FDD or tdd mode that can be LTE system.At this point, can also proceed to can for method 500
The step S503 of choosing switches over the filter for the cellular communication in cellular communication system at this, for handling
The data to be received and dispatched in D2D communication.For example, user equipment can use the filter after switching when sending data on D2D chain road
Wave device reduces undesirable transmitting；When receiving data on D2D chain road, the filter refusal after can use switching closes on letter
Power leakage in road, etc..
Method 500 terminates after step S503.
With reference next to Fig. 6, it illustrates the methods according to an exemplary embodiment of the present invention for supporting D2D to communicate
600 flow chart.According to an embodiment of the invention, method 600 can be executed in base station side.It is similar with above description, it is clear to illustrate
For the sake of clear, two user equipmenies for participating in D2D communication are referred to as the first user equipment and second user equipment.
After method 600 starts, in step S601, receives from the first user equipment and used for the first user equipment and second
The request of D2D communication between the equipment of family.Next, base station determines whether that the D2D communicates (this respect in step S602
Detail as detailed above).Allow the D2D to communicate in response to determining, in step S603, is sent to the first user equipment
For the resource allocation information of D2D communication, which at least indicates the dedicated channel bandwidth and load for D2D communication
Wave frequency rate.
Some embodiments according to the present invention, above-mentioned request may include the anticipatory data transmission quantity of D2D communication, and its
Middle resource allocation information is determined based on volume of transmitted data.Alternatively or additionally, resource allocation information also can indicate that D2D is logical
At least one of the execution period of letter and execution number.
Some embodiments according to the present invention, the dedicated channel bandwidth for D2D communication can be in cellular communication system
One of defined preset channel bandwidth.For example, preset channel bandwidth can be long term evolution LTE Frequency Division Duplex FDD or tdd mode
Preset channel bandwidth.
Certain alternative embodiments according to the present invention, method 600, resource allocation information can also be sent to from base station
Two user equipmenies.Note that this is optionally, because resource allocation information for example can also be transmitted to the second use by the first user equipment
Family equipment.
Method 600 terminates after step S603.
Referring now to Figure 7, being used for the first user equipment and second user equipment it illustrates according to an embodiment of the present invention
Between D2D communication device 700 block diagram.Device 700 resides in user equipment side, and can be configured to execute and retouch above
The method 500 stated.
As shown, according to an embodiment of the invention, device 700 includes: acquiring unit 701, it is configured as obtaining and is directed to
The resource allocation information of D2D communication, resource allocation information is determined by the base station in cellular communication system and at least instruction is used for
The dedicated channel bandwidth and carrier frequency of D2D communication.Device 700 further includes D2D communication unit 702, is configured as utilizing resource
Resource indicated by distribution information communicates to execute D2D.
According to some embodiments, acquiring unit 701 may include: to be configured as obtaining resource allocation from second user equipment
The unit of information.Alternatively or additionally, acquiring unit 701 may include: to be configured as from base station receiving resource allocation information
Unit.At this point, device 700 can also include request unit, it is configured as sending the request communicated for D2D to base station, with
Just base station in response determines and sends resource allocation information in request.In such embodiments, which may include D2D logical
The anticipatory data transmission quantity of letter, and wherein resource allocation information can be determined based on volume of transmitted data by base station.
According to some embodiments, resource allocation information also can indicate that the execution period of D2D communication and execute in number
At least one.In addition, the dedicated channel bandwidth for D2D communication, which can be in cellular communication system, advises according to some embodiments
One of fixed preset channel bandwidth.For example, the preset channel bandwidth can be long term evolution LTE Frequency Division Duplex FDD or tdd mode
Preset channel bandwidth.At this point, device 700 may include optional filter switch unit 703, it is configured as to for honeycomb
The filter of cellular communication in communication system switches over, for handling the data to transmit in D2D communication.
With reference next to Fig. 8, it illustrates a kind of base stations in a cellular communication system according to an embodiment of the present invention
Frame for the device 800 for supporting the D2D between the first user equipment and second user equipment in cellular communication system to communicate
Figure.Device 800 resides in base station side, and can be configured to execute method as described above 600.
As shown in figure 8, being configured as using from first according to an embodiment of the invention, device 800 includes: receiving unit 801
Family equipment receives the request for D2D communication；Approved unit 802 is configured to respond to request, it is determined whether allows first to use
D2D between family equipment and second user equipment is communicated；And resource allocation unit 803, it is configured to respond to D2D communication quilt
Allow, the resource allocation information communicated for D2D is sent to the first user equipment, resource allocation information is at least indicated for D2D
The dedicated channel bandwidth and carrier frequency of communication.
Some embodiments according to the present invention, request may include the anticipatory data transmission quantity of D2D communication, and wherein provide
Source allocation unit can be configured to determine resource allocation information based on volume of transmitted data.Some embodiments according to the present invention,
Resource allocation information also can indicate that at least one of execution period and execution number of D2D communication.It is according to the present invention certain
A little embodiments, the dedicated channel bandwidth for D2D communication can be one of preset channel bandwidth specified in cellular communication system.
For example, preset channel bandwidth can be the preset channel bandwidth of long term evolution LTE Frequency Division Duplex FDD or tdd mode.According to this hair
Bright some embodiments, device 800 can also include: the unit for being configured to send resource allocation information to second user equipment.
It should be appreciated that for clarity, be not shown in figures 7 and 8 device 700 and 800 certain selectable units and
Subelement.It will be appreciated, however, that being equally applicable to device 700 and 800 above with reference to each feature described in Fig. 1-Fig. 6 institute.
Moreover, terminology used here " unit " is either hardware module, is also possible to software unit module.Correspondingly, device 700
It can realize by various modes.For example, in certain embodiments, device can be some or all of using software and/or solid
Part is realized, such as is implemented as comprising computer program product on a computer-readable medium.Alternatively or additionally, it fills
Set some or all of can be realized based on hardware, for example, be implemented as integrated circuit (IC), specific integrated circuit (ASIC),
System on chip (SOC), field programmable gate array (FPGA) etc..The scope of the present invention is not limited in this respect.
In addition, the embodiment of the present invention may include the entity device comprising above-mentioned apparatus.For example, the present invention can be carried out
For the user equipment comprising device described above 700, including but not limited to cellular phone, mobile phone, personal digital assistant
(PDA), the tablet computer with communication capacity or any fixation appropriate and/or mobile device.Moreover, the present invention may be used also
It is implemented as the base station comprising device described above 800.
For illustration purposes only, several exemplary embodiments of the invention are hereinbefore described.The embodiment of the present invention
It can be realized by the combination of hardware, software or software and hardware.Hardware components can use special logic to realize；It is soft
Part part can store in memory, be come by instruction execution system appropriate, such as microprocessor or special designs hardware
It executes.It will be understood by those skilled in the art that above-mentioned system and method can be used computer executable instructions and/
Or it is included in the processor control code to realize, such as in such as mounting medium of disk, CD or DVD-ROM, such as read-only
It is provided in this way in the programmable memory of memory (firmware) or the data medium of such as optics or electrical signal carrier
Code.Present system can be by the half of ultra large scale integrated circuit or gate array, logic chip, transistor etc.
The hardware circuit of the programmable hardware device of conductor or field programmable gate array, programmable logic device etc. realizes,
The software realization executed by various types of processors can also be used, can also by above-mentioned hardware circuit and software combination for example
Firmware is realized.
It should be noted that although being referred to the several devices or sub-devices of system in the above detailed description, this stroke
Divide only not enforceable.In fact, according to an embodiment of the invention, the feature of two or more above-described devices and
Function can embody in one apparatus.Conversely, the feature and function of an above-described device can be with further division
To be embodied by multiple devices.Similarly, although describing the operation of the method for the present invention in the accompanying drawings with particular order,
This does not require that or implies must execute these operations in this particular order, or have to carry out operation shown in whole
Just it is able to achieve desired result.On the contrary, the step of describing in flow chart can change and execute sequence.Additionally or alternatively, may be used
To omit certain steps, multiple steps are merged into a step and are executed, and/or a step is decomposed into multiple steps and is held
Row.
Although specific examples describe the present invention by reference to several, it should be appreciated that, the present invention is not limited to institutes
Disclosed specific embodiment.The present invention is directed to cover included various modifications in spirit and scope of the appended claims and wait
With arrangement.Scope of the following claims is to be accorded the broadest interpretation, thus comprising it is all it is such modification and equivalent structure and
Function.
Claims (26)
1. for executing and second in the cellular communication system at a kind of the first user equipment in a cellular communication system
The method that the equipment of user equipment communicates equipment D2D, which comprises
The resource allocation information for D2D communication is obtained, the resource allocation information is by the cellular communication system
Base station is determining and at least instruction is used for dedicated channel bandwidth and carrier frequency that the D2D is communicated, the dedicated channel bandwidth
It is one of the preset channel bandwidth that cellular communication is used for specified in the cellular communication system；
Selection is used for the filter of the preset channel bandwidth in the filter of cellular communication from for the cellular communication system
Wave device, for handling the data to transmit in D2D communication；And
The data are transmitted using resource indicated by the resource allocation information.
2. according to the method described in claim 1, wherein obtaining for the D2D resource allocation information communicated includes: from institute
It states second user equipment and obtains the resource allocation information.
3. according to the method described in claim 1, wherein obtaining for the D2D resource allocation information communicated includes: from institute
It states base station and receives the resource allocation information.
4. according to the method described in claim 3, further include:
The request communicated to base station transmission for the D2D, so that the base station in response is determined and sent out in the request
Send the resource allocation information.
5. according to the method described in claim 4, wherein the request packet includes the anticipatory data transmission quantity of D2D communication, and
And wherein the resource allocation information based on the data transmission quantity and determined by the base station.
6. according to the method described in claim 1, wherein the resource allocation information also indicates the execution period of the D2D communication
With execute at least one of number.
7. according to the method described in claim 1, wherein the preset channel bandwidth is long term evolution LTE Frequency Division Duplex FDD mould
The preset channel bandwidth of formula or Time Division Duplex TDD mode.
8. a kind of base station in a cellular communication system be used to support the first user equipment in the cellular communication system with
The method that equipment between second user equipment communicates equipment D2D, which comprises
The request communicated for the D2D is received from first user equipment；
In response to the request, it is determined whether allow described between first user equipment and the second user equipment
D2D communication；And
It is allowed in response to D2D communication, the first user equipment of Xiang Suoshu sends the resource allocation letter for D2D communication
Breath, the resource allocation information at least indicate the dedicated channel bandwidth and carrier frequency for D2D communication, the dedicated letter
Road bandwidth is that one of the preset channel bandwidth of cellular communication is used for specified in the cellular communication system, so that described first
Selection is used for the preset channel bandwidth in the filter of cellular communication of the user equipment from for the cellular communication system
Filter, with for handle will in the D2D communication data that transmit.
9. according to the method described in claim 8, wherein the request packet includes the anticipatory data transmission quantity of D2D communication, and
And wherein the resource allocation information based on the data transmission quantity and determine.
10. according to the method described in claim 8, wherein the resource allocation information also indicate D2D communication execute week
At least one of phase and execution number.
11. according to the method described in claim 8, wherein the preset channel bandwidth is long term evolution LTE Frequency Division Duplex FDD mould
The preset channel bandwidth of formula or Time Division Duplex TDD mode.
12. according to the method described in claim 8, further include:
The resource allocation information is sent to the second user equipment.
13. for executing and second in the cellular communication system at a kind of the first user equipment in a cellular communication system
The device that the equipment of user equipment communicates equipment D2D, described device include:
Acquiring unit is configured as obtaining the resource allocation information for D2D communication, and the resource allocation information is by described
Base station in cellular communication system is determining and at least instruction is used for dedicated channel bandwidth and carrier frequency that the D2D is communicated,
The dedicated channel bandwidth is that one of the preset channel bandwidth of cellular communication is used for specified in the cellular communication system；
Filter switch unit is configured as selecting to use in the filter of the cellular communication from for the cellular communication system
In the filter of the preset channel bandwidth, for handling the data to transmit in D2D communication；And
D2D communication unit is configured as transmitting the data using resource indicated by the resource allocation information.
14. device according to claim 13, wherein the acquiring unit includes: to be configured as setting from the second user
The standby unit for obtaining the resource allocation information.
15. device according to claim 13, wherein the acquiring unit includes: to be configured as receiving institute from the base station
State the unit of resource allocation information.
16. device according to claim 15, further includes:
Request unit is configured as sending the request communicated for the D2D to the base station, so that the base station in response is in institute
It states request and determines and send the resource allocation information.
17. device according to claim 16, wherein the request packet includes the anticipatory data transmission quantity of the D2D communication,
And wherein the resource allocation information based on the data transmission quantity and determined by the base station.
18. device according to claim 13, wherein the resource allocation information also indicate the D2D communication execute week
At least one of phase and execution number.
19. device according to claim 13, wherein the preset channel bandwidth is long term evolution LTE Frequency Division Duplex FDD
The preset channel bandwidth of mode or Time Division Duplex TDD mode.
20. a kind of base station in a cellular communication system be used to support the first user equipment in the cellular communication system with
The device that equipment between second user equipment communicates equipment D2D, described device include:
Receiving unit is configured as receiving the request communicated for the D2D from first user equipment；
Approved unit is configured to respond to the request, it is determined whether first user equipment and described second is allowed to use
D2D communication between the equipment of family；And
Resource allocation unit is configured to respond to the D2D communication and is allowed to, and the first user equipment of Xiang Suoshu, which is sent, is directed to institute
The resource allocation information of D2D communication is stated, the resource allocation information at least indicates the dedicated channel bandwidth for D2D communication
And carrier frequency, the dedicated channel bandwidth are the preset channel bands that cellular communication is used for specified in the cellular communication system
One of width, so that being selected in the filter of cellular communication of first user equipment from for the cellular communication system
For the filter of the preset channel bandwidth, for handling the data to transmit in D2D communication.
21. device according to claim 20, wherein the request packet includes the anticipatory data transmission quantity of the D2D communication,
And wherein the resource allocation unit is configured as transmission quantity based on the data and determines the resource allocation information.
22. device according to claim 20, wherein the resource allocation information also indicate the D2D communication execute week
At least one of phase and execution number.
23. device according to claim 20, wherein the preset channel bandwidth is long term evolution LTE Frequency Division Duplex FDD
The preset channel bandwidth of mode or Time Division Duplex TDD mode.
24. device according to claim 20, further includes:
It is configured to send the unit of the resource allocation information to the second user equipment.
25. a kind of user equipment, including 3 to 19 described in any item devices according to claim 1.
26. a kind of base station, including according to the described in any item devices of claim 20 to 24.
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| CN201310172979.6A CN104144519B (en) | 2013-05-10 | 2013-05-10 | The method and apparatus that equipment is communicated for equipment |
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| CN201310172979.6A CN104144519B (en) | 2013-05-10 | 2013-05-10 | The method and apparatus that equipment is communicated for equipment |
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| CN104144519B true CN104144519B (en) | 2019-05-31 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105657835B (en) * | 2014-11-14 | 2020-03-24 | 联想(北京)有限公司 | Information processing method, electronic equipment and base station |
| CN111224767B (en) * | 2015-06-12 | 2021-10-22 | 华为技术有限公司 | Network equipment, terminal equipment and resource allocation method |
| CN106376082B (en) * | 2015-07-20 | 2021-12-28 | 索尼公司 | Electronic device for wireless communication and wireless communication method |
| WO2017028154A1 (en) * | 2015-08-17 | 2017-02-23 | 华为技术有限公司 | Resource allocation indication method and device, access point, and user equipment |
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