CN103037517B - A kind of wireless communications method, system and base station - Google Patents
A kind of wireless communications method, system and base station Download PDFInfo
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- CN103037517B CN103037517B CN201110300413.8A CN201110300413A CN103037517B CN 103037517 B CN103037517 B CN 103037517B CN 201110300413 A CN201110300413 A CN 201110300413A CN 103037517 B CN103037517 B CN 103037517B
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Abstract
The present invention provides a kind of wireless communications method, including：The first user equipment is given in base station in the first authorization message of subframe n1 transmission, and the first user equipment transmits the first business datum according to the instruction of the first authorization message in subframe n1+k1；Second user equipment is given in the base station in the second authorization message of subframe n1+m1 transmission, and second user equipment receives first business datum according to the instruction of the second authorization message in the subframe n1+k1.The present invention also provides a kind of base station and wireless communication system.The present invention realizes D2D communications.
Description
Technical field
The present invention relates to a kind of device-to-device (Device-to- in wireless communication field, more particularly to cellular system
Device, abbreviation D2D) wireless communications method, system and base station.
Background technology
Cellular communication system is due to realizing the multiplexing to limited spectrum resources so that wireless communication technology is vigorously sent out
Exhibition.In the cellular system, when thering is business to need transmission between two user equipmenies (User Equipment, abbreviation UE), user
Equipment 1 (UE1) arrives the business datum of user equipment 2 (UE2), can pass through core to base station 1, base station 1 by air interface transmission first
Net by the user data transmission to base station 2, base station 2 again by above-mentioned business datum by air interface transmission to UE2.UE2 to UE1 industry
Business data use similar handling process.If UE1 and UE2 is located at same cellular cell, then base station 1 and base station 2 are same
One website, and a data transfer still can consume two parts of radio spectrum resources, as shown in Figure 1.
If user equipment 1 and user equipment 2 are located at same cell and at a distance of nearer, then above-mentioned cellular communication side
Method is apparently not optimal.And in fact, with the variation of mobile communication business, such as social networks is in wireless communication system
In application, the extensive use etc. of e-payment so that business transmission demand is growing between user closely.And at this
Under a little application scenarios, radio spectrum resources can not be fully used based on traditional cellular communication mode, so that
The research for the direct communication mode that device-to-device (Device-to-Device, D2D) must be directed to receives more and more attention.
So-called D2D, refer to that business datum forwards without base station, but directly by source user equipment by air interface transmission to targeted customer
Equipment.This communication pattern is different from the communication pattern of conventional cellular systems, as shown in Figure 2.If in system D2D communication and
Cellular communication coexists and share spectrum resources, then will be brought challenges to the RRM of communication system.
Further, if D2D communications can have backwards compatibility to user equipment, it can further expand D2D and lead to
The use range of letter, further performance gain is brought for system.
For D2D communications, business datum is directly transmitted between UE, therefore its scheduling and transmission means
Conventional cellular communication mode can not be continued to use.For example, in LTE (Long Term Evolution, Long Term Evolution)/LTE-A
(LTE-Advanced, senior long term evolution) system realizes the scheduling and transmission of D2D communications, not yet proposes effective solve at present
Scheme.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of wireless communications method, system and base station, realizes that D2D communicates.
In order to solve the above problems, the invention provides a kind of wireless communications method, including：
The first user equipment is given in base station in the first authorization message of subframe n1 transmission, indicates first user equipment in subframe
N1+k1 transmits the first business datum；And
Second user equipment is given in the base station in the second authorization message of subframe n1+m1 transmission, indicates that the second user is set
It is standby to receive first business datum in the subframe n1+k1；
Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0.
Wherein, the k1 values meet the time of the first business datum described in first user device transmissions；Institute
M1 values are stated to meet so that the second user equipment receives second authorization message before the first business datum is received.
Wherein, first authorization message or the second authorization message are transmitted in the base station in the following way：
The base station is in Physical Downlink Control Channel with the first authorization message described in the format transmission of Downlink Control Information
Or second authorization message.
Wherein, for frequency division duplex system, the k1=4；For tdd systems, k1 >=4.
Wherein, the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1 ＜ k1.
Wherein, for tdd systems, when the subframe n1+k1 is sub-frame of uplink, the value of the k1 with it is long-term
The scheduling sequential of the uplink service of evolution system is identical.
Wherein, the subframe n1+k1 is descending sub frame, the m1=0.
The embodiment of the present invention also provides a kind of wireless communications method, including：
First user equipment receives the first authorization message of base station transmission in subframe n1, according to first authorization message
Instruction transmits the first business datum in subframe n1+k1；And
The second authorization message that second user equipment receives the base station transmission in subframe n1+m1, is awarded according to described second
The instruction for weighing information receives first business datum in the subframe n1+k1；
Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0.
Wherein, the k1 values meet the time of the first business datum described in first user device transmissions；Institute
M1 values are stated to meet so that the second user equipment receives second authorization message before the first business datum is received.
Wherein, for frequency division duplex system, the k1=4, for tdd systems, k1 >=4.
Wherein, the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1 ＜ k1.
Wherein, for tdd systems, when the subframe n1+k1 is sub-frame of uplink, the value of the k1 with it is long-term
The scheduling sequential of the uplink service of evolution system is identical, and first user equipment is with Physical Uplink Shared Channel (PUSCH) lattice
Formula sends first business datum.
Wherein, the subframe n1+k1 is descending sub frame, the m1=0, and first user equipment is shared with physical down
Channel (PDSCH) form sends first business datum.
The embodiment of the present invention also provides a kind of base station, including granted unit, wherein：
The granted unit is used for：The first authorization message, which is transmitted, in subframe n1 gives the first user equipment, instruction described first
User equipment transmits the first business datum in subframe n1+k1；And transmit the second authorization message in subframe n1+m1 and used to second
Family equipment, indicate that the second user equipment receives first business datum in subframe n1+k1；
Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0.
Wherein, the k1 values meet the time of the first business datum described in first user device transmissions；Institute
M1 values are stated to meet so that the second user equipment receives second authorization message before the first business datum is received.
Wherein, the granted unit transmits first authorization message or the second authorization message in the following way：
The granted unit authorizes in Physical Downlink Control Channel with described in the format transmission of Downlink Control Information first
Information or the second authorization message.
Wherein, for frequency division duplex system, the k1=4；For tdd systems, k1 >=4.
Wherein, the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1 ＜ k1.
Wherein, for tdd systems, when the subframe n1+k1 is sub-frame of uplink, the value of the k1 with it is long-term
The scheduling delay of the uplink service of evolution system is identical.
Wherein, the subframe n1+k1 is descending sub frame, the m1=0.
The embodiment of the present invention also provides a kind of wireless communication system, including above-mentioned base station, in addition to the first user equipment and
Second user equipment, wherein：
First user equipment is used for：The first authorization message of base station transmission is received in subframe n1, according to described first
The instruction of authorization message transmits the first business datum in subframe n1+k1；
The second user equipment is used for：The second authorization message that base station sends is received in subframe n1+m1, according to described the
The instruction of two authorization messages receives first business datum in subframe n1+k1.
Wherein, first user equipment is additionally operable to：When the subframe n1+k1 is sub-frame of uplink, sent with PUSCH forms
First business datum；When the subframe n1+k1 is descending sub frame, first business datum is sent with PDSCH forms.
Based on foregoing invention content, solves device-to-device (D2D) communication under the control of base station in LTE/LTE-A systems
The problem of, realize D2D communication with cellular communication coexist and resource-sharing.Also, the method for the invention has to LTE/
The backwards compatibility of lte-a system user equipment.
Brief description of the drawings
Fig. 1 is cellular communication schematic diagram when UE is located at same base station cell；
Fig. 2 is D2D communication schemes；
Fig. 3 is LTE/LTE-A system wireless frame structure schematic diagrames；
Fig. 4 is LTE/LTE-A system S subframe structure schematic diagrames；
Fig. 5 is wireless communications method of embodiment of the present invention base station and UE1 interaction diagrams；
Fig. 6 is wireless communications method of embodiment of the present invention base station and UE2 interaction diagrams.
Embodiment
The solution of the present invention is with 3GPP (3rdGeneration Partnership Project, the 3rd generation affiliate meter
Draw) LTE (Long Term Evolution, Long Term Evolution)/LTE-A (LTE-Advanced, senior long term evolution) system for the back of the body
Scape is introduced.LTE/LTE-A system down links are with OFDM (Orthogonal Frequency Division
Multiplexing, OFDM) based on technology, up-link then uses SC-FDMA (Single carrier-
Frequency Division Multiplexing Access, single carrier frequency division multiplexing access) multi-access mode.In OFDM/SC-
In FDMA systems, when the communication resource is-form of frequency bidimensional.For example, for LTE/LTE-A systems, uplink and downlink chain
The communication resource on road is all to be divided with frame (frame) for unit on time orientation, each radio frames (radio frame) length
For 10ms, comprising the subframe (sub-frame) that 10 length are 1ms, each subframe includes two time slots that length is 0.5ms again
(slot), as shown in Figure 3.
According to the difference of duplex mode, LTE/LTE-A systems are divided into two patterns again：Time division duplex (Time-Division
Duplex, abbreviation TDD) system and FDD (Frequency-Division Duplex, abbreviation FDD) system.FDD system
The signal that downlink (network side to terminal) and up-link (terminal to network side) are respectively used to by two frequency bands transmits,
Corresponding running time-frequency resource is referred to as descending sub frame and sub-frame of uplink；TDD system only has a frequency band while is used for up-downgoing chain
The signal transmission on road, by the way that the signal transmission distribution of uplink and downlink link is realized into both links in different subframes
Multiplexing.It is different according to the ratio of ascending-descending subframes quantity in LTE/LTE-A Release-8/9/10 versions, TDD system branch
7 kinds of subframe up-downgoing proportionings (Uplink-downlink configuration) are held, as shown in table 1.
Table 1：Subframe uplink/downlink collocation form table in TDD LTE systems
In table 1, D represents descending sub frame, and U represents sub-frame of uplink, and S represents special subframe.Fig. 4 is according to correlation technique
The schematic diagram of TDD system special subframe structure, as shown in figure 4, S subframes include a part of descending pilot frequency time slot (Downlink
Pilot Time Slot, referred to as DwPTS), uplink pilot time slot (Uplink Pilot Time Slot, referred to as UpPTS)
The protection interval (Guard Period, abbreviation GP) changed between uplink/downlink.Wherein DwPTS can be with communicating downlink
Control information and business information.
In LTE/LTE-A cellular communication systems, business data transmission has corresponding authorization message.It is such as right
To be transmitted in the business of downlink, downstream grants (Downlink grant, DL grant) are transmitted in base station in the control domain of subframe,
And then UE receives business datum after the authorization message is detected in the business domains of the subframe.For the business of up-link
Transmission, control domain of the base station in subframe n transmit uplink authorization (Uplink grant, UL grant), and UE is detecting the mandate
After information, uplink business data is transmitted in subframe n+k.For FDD system, k=4；For TDD system, for different subframes
Configuration, k value are defined respectively, as shown in table 2.
Table 2：Uplink authorization and business transmission k value tables in TDD LTE systems
The embodiment of the present invention proposes a kind of wireless communications method, such as Fig. 5, shown in 6, including：
The first authorization message is transmitted to UE1 in base station in subframe n1, indicates that the UE1 transmits the first business in subframe n1+k1
Data；
And the second authorization message is transmitted to UE2 in base station in subframe n1+m1, indicates that the UE2 receives in subframe n1+k1
First business datum；
Wherein, the n1 is more than or equal to 0, and the k1 is more than or equal to 0, and the m1 is more than or equal to 0；The k1 values meet institute
State the time of the first business datum described in the first user device transmissions；The m1 values meet the second user is set
It is standby to receive second authorization message before the first business datum is received.
In user equipment side, following flow is performed：
UE1 receives the first authorization message of base station transmission in subframe n1, according to the instruction of first authorization message in son
Frame n1+k1 transmits the first business datum；And
The second authorization message that UE2 receives base station transmission in subframe n1+m1, exists according to the instruction of second authorization message
Subframe n1+k1 receives first business datum；
Further, the subframe n1 is descending sub frame.
Wherein, first authorization message or the second authorization message are transmitted in the base station in the following way：
The base station is in Physical Downlink Control Channel (Physical Downlink Control Channel, abbreviation
PDCCH with described in Downlink Control Information (Downlink Control Information, abbreviation DCI) format transmission in)
One authorization message or the second authorization message.
Wherein, for frequency division duplex system, the k1=4；For tdd systems, k1 >=4.
Wherein, for tdd systems, when the subframe n1+k1 is sub-frame of uplink, the value of the k1 with it is long-term
The scheduling sequential of the uplink service of evolution system is identical.
Wherein, the subframe n1+k1 can be that sub-frame of uplink can also be descending sub frame, wherein the subframe n1+k1 is
During sub-frame of uplink, m1 >=0, and m1 ＜ k1, first user equipment are sent out with Physical Uplink Shared Channel (PUSCH) form
Send first business datum.When the subframe n1+k1 is descending sub frame, the m1=0, first user equipment is with physics
DSCH Downlink Shared Channel (PDSCH) form sends first business datum.
UE1 and UE2 status equity, UE2 can use UE1 to UE2 transmission services to the method for UE1 transmission services data
The method of data.That is, authorization message 3 is transmitted in described base station in subframe n2, and UE2 is according to the instruction of the authorization message 3 in subframe
N2+k2 transmission services data 2；And authorization message 4 is transmitted in the base station in subframe n2+m2, UE1 is according to the authorization message 4
Instruction receive the business datum 2 in subframe n2+k2.N2, k2, m2 value refer to n1, k1, m1.
Further, subframe n1+k1 and subframe n2+k2 can be one of following situation：The subframe n1+k1 is descending son
Frame, the subframe n2+k2 is sub-frame of uplink；Or the subframe n1+k1 is sub-frame of uplink, the subframe n2+k2 is up son
Frame；Or the subframe n1+k1 is descending sub frame, the subframe n2+k2 is descending sub frame.
Base station described herein is simultaneously including the relay station with radio resource management function, in local area network
Access node, the more powerful user equipment of function (such as user equipment with relay function) etc., similarly hereinafter.Meanwhile such as nothing
Special instruction, above-mentioned described descending sub frame, includes special subframe, similarly hereinafter simultaneously in a tdd system.Below in conjunction with specific reality
Example is applied to be further detailed.
Embodiment 1
In the present embodiment, UE1 is given in base station in subframe n1 transmission authorization message 1, and UE1 is according to the finger of the authorization message 1
Show in subframe n1+k1 transmission services data 1；And UE2 is given in base station in subframe n1+m1 transmission authorization message 2, UE2 is according to
The instruction of authorization message 2 receives the business datum 1 in subframe n1+k1.Also, the subframe n1+k1 is descending sub frame.
For k1, its value needs to meet times of the UE when transmitting data, i.e. UE1 receives in subframe n1
After authorization message 1, the transmitting terminal for completing data is needed to prepare before subframe n1+k1 sends data, such as channel coding, star
Seat modulation, resource impact etc..Preferably, k1 value may be referred to the scheduling sequential of the uplink service of LTE/LTE-A systems.I.e.
In FDD system, k1 values preferably take 4；In a tdd system, k1 value has relation with specific subframe uplink-downlink configuration, preferably
K1 >=4 are taken, and meet that subframe n1 is descending sub frame.For example, it is assumed that the current subframe uplink-downlink configuration of cell be configuration 1 (such as
Table 1), and the subframe number that the business datum 1 is transmitted is 4, then the subframe 0 of current radio frames and its descending son before
Frame all meets scheduling delay k1 >=4, it is contemplated that transmits the time delay of process, k1=4 or k1 can be taken in example as escribed above
=5, that is, the authorization message 1 for being sent to UE1 is transmitted in the subframe 0 of current radio frames or the subframe 9 of previous radio frames.
The subframe position that authorization message 2 is transmitted is subframe n1+m1, m1 value authorizes letter firstly the need of m1 >=0 is met
The transmission of breath 2 can not be prior to authorization message 1.Meanwhile m1 needs to be received before business datum 1, i.e. m1≤k1.Preferably
And then desirable m1=k1, i.e. UE2 receive the business datum 1 after subframe n1+k1 receives authorization message in the subframe.
In the present embodiment, the authorization message 1 and authorization message 2 can also a transmission primarieses.I.e. the authorization message by
In subframe n1 transmission primarieses, UE1 receives the authorization message and transmits industry in subframe n1+k1 based on the instruction of the authorization message for base station
Business data 1；UE2 receives the authorization message and receives business datum 1 in subframe n1+k1 based on the instruction of the authorization message.
Embodiment 2
In the present embodiment, authorization message 1 is transmitted in base station in subframe n1, and UE1 is according to the instruction of the authorization message 1 in son
Frame n1+k1 transmission services data 1；And authorization message 2 is transmitted in base station in subframe n1+m1, UE2 is according to the authorization message 2
Instruction receives the business datum 1 in subframe n1+k1.Also, the subframe n1+k1 is sub-frame of uplink.
For k1, its value needs to meet times of the UE when transmitting data, i.e. UE1 receives in n1 subframes
After authorization message 1, the transmitting terminal for completing data is needed to prepare before subframe n1+k1 sends data, such as channel coding, star
Seat modulation, resource impact etc..Preferably, k1 value is identical with the scheduling sequential of the uplink service of LTE/LTE-A systems, that is, exists
In FDD system, k1 values preferably take 4；In a tdd system, scheduling sequential relationship of the k1 values preferably with uplink service is consistent (such as
Table 2).For example, it is assumed that the current subframe uplink-downlink configuration of cell is configuration 1 (such as table 1), and the business datum 2 is transmitted
Subframe number is 8.According to the uplink scheduling sequential relationship of LTE TDD systems, the authorization message of the uplink service of subframe 8 is in subframe
4 transmission, then the authorization message 1 for the business datum 2 transmitted in subframe 8 is transmitted in subframe 4.
The subframe position that authorization message 2 is transmitted is subframe n1+m1, and the value of the m1 needs to meet m1 >=0, that is, authorizes letter
The transmission of breath 2 is not in time prior to authorization message 1.In addition, m1 value needs to meet that m1 ＜ k1, i.e. UE2 need simultaneously
The reception of authorization message 2 is completed before the sub-frame of uplink n1+k1 that business datum 1 is transmitted.Because the business of sub-frame of uplink passes
It is defeated just to need to complete the reception of the authorization message before the subframe business datum is received since subframe section start,
To reduce the load of UE cachings.Preferably, m1=0 is can use, i.e. authorization message 1 and authorization message 2 is all transmitted in subframe n1.
In the present embodiment, the authorization message 1 and authorization message 2 can also a transmission primarieses.I.e. the authorization message by
In subframe n1 transmission primarieses, UE1 receives the authorization message and transmits industry in subframe n1+k1 based on the instruction of the authorization message for base station
Business data 1；UE2 receives the authorization message and receives business datum 1 in subframe n1+k1 based on the instruction of the authorization message.
Embodiment 3
The present embodiment describes the transmission method of business datum 2 of the present invention, specifically, the base station is transmitted in subframe n2
Authorization message 3, UE2 is according to the instruction of the authorization message 3 in subframe n2+k2 transmission services data 2；And the base station exists
Subframe n2+m2 transmits authorization message 4, and UE1 receives the business datum according to the instruction of the authorization message 4 in subframe n2+k2
2。
In the present embodiment, the transmission of authorization message 3 and authorization message 4 can be used and awarded with embodiment 1 and embodiment 2
The transmission method and sequential relationship of information 1 and authorization message 2 are weighed, is repeated no more.
Embodiment 4
The present embodiment describes the sending method of authorization message described in the invention in detail.Mandate described in the present invention
Information is sent by base station, and is to be sent in the form of DCI in PDCCH.The authorization message is used to indicate business number to UE
According to the related information of transmission, including at least the one or more in following information：Resource allocation (Resource
Allocation) information, code modulation mode (Modulation and Coding Scheme, MCS), mixed automatic retransfer please
Ask process number (HARQ process), precoding (precoding) information (index of pre-coding matrix), demodulated reference signal sequence
Column information (including circular shift information of the identification information of sequence, sequence etc.), reference signal port configured information, Power Control
Information, redundancy versions (Redundancy Version) etc..
Embodiment 5
The present embodiment describes the transmission method of business datum described in the invention in detail.Specifically, described in invention
UE between the business datum transmitted transmitted with PDSCH or PUSCH form in corresponding resource.
Being referred to PDSCH form, the Base-Band Processing of the business datum refers to PDSCH Base-Band Processing flow, including
Scramble (Scrambling), modulation mapping (Modulation mapping), layer mapping (Layer mapping), precoding
(Precoding), resource unit mapping (Resource element mapping), ofdm signal generation, etc..
Being referred to PUSCH form, the Base-Band Processing of the business datum refers to PUSCH Base-Band Processing flow, including
Scramble (Scrambling), modulation mapping (Modulation mapping), layer mapping (Layer mapping), transmission prelists
Code (Transform precoder), precoding (Precoding), resource unit mapping (Resource element
Mapping), SC-FDMA signal generates, etc..
The embodiment of the present invention provides a kind of base station, including granted unit, wherein：
The granted unit is used for：The first authorization message, which is transmitted, in subframe n1 gives the first user equipment, instruction described first
User equipment transmits the first business datum in subframe n1+k1；And transmit the second authorization message in subframe n1+m1 and used to second
Family equipment, indicate that the second user equipment receives first business datum in subframe n1+k1；
Wherein, the k1 is more than or equal to 0, and the k1 values meet the first business number described in first user device transmissions
According to time；The m1 is more than or equal to 0, and meets the second user equipment is connect before the first business datum is received
Receive second authorization message.
Wherein, the granted unit transmits first authorization message or the second authorization message in the following way：
The granted unit authorizes in Physical Downlink Control Channel with described in the format transmission of Downlink Control Information first
Information or the second authorization message.
Wherein, for frequency division duplex system, the k1=4；For tdd systems, k1 >=4.
Wherein, the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1 ＜ k1.
Wherein, the subframe n1+k1 is descending sub frame, the m1=0.
The embodiment of the present invention also provides a kind of wireless communication system, including above-mentioned base station, in addition to the first user equipment and
Second user equipment, wherein：
First user equipment is used for：The first authorization message of base station transmission is received in subframe n1, according to described first
The instruction of authorization message transmits the first business datum in subframe n1+k1；
The second user equipment is used for：The second authorization message that base station sends is received in subframe n1+m1, according to described the
The instruction of two authorization messages receives first business datum in subframe n1+k1；
Wherein, first user equipment is additionally operable to：When the subframe n1+k1 is sub-frame of uplink, sent with PUSCH forms
First business datum.Wherein, first user equipment is additionally operable to：When the subframe n1+k1 is descending sub frame, with
PDSCH forms send first business datum.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific
Hardware and software combines.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (16)
- A kind of 1. wireless communications method, it is characterised in that including：The first user equipment is given in base station in the first authorization message of subframe n1 transmission, indicates first user equipment in subframe n1+ K1 transmits the first business datum；AndSecond user equipment is given in the base station in the second authorization message of subframe n1+m1 transmission, indicates that the second user equipment exists The subframe n1+k1 receives first business datum；Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0；The subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1<K1, or, the subframe n1+k1 is descending sub frame, the m1=0；The k1 values meet the time of the first business datum described in first user device transmissions；The m1 values expire Foot causes the second user equipment to receive second authorization message before the first business datum is received.
- 2. the method as described in claim 1, it is characterised in that transmit described first in the following way and authorize letter in the base station Breath or the second authorization message：The base station is in Physical Downlink Control Channel with the first authorization message described in the format transmission of Downlink Control Information or Two authorization messages.
- 3. the method as described in claim 1, it is characterised in that for frequency division duplex system, the k1=4；It is double for the time-division Work system, k1 >=4.
- 4. the method as described in claim 1, it is characterised in that for tdd systems, when the subframe n1+k1 is up During subframe, the value of the k1 is identical with the scheduling sequential of the uplink service of long evolving system.
- A kind of 5. wireless communications method, it is characterised in that including：First user equipment receives the first authorization message of base station transmission in subframe n1, according to the instruction of first authorization message The first business datum is transmitted in subframe n1+k1；AndThe second authorization message that second user equipment receives the base station transmission in subframe n1+m1, authorizes according to described second and believes The instruction of breath receives first business datum in the subframe n1+k1；Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0, and the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1<K1, or, the subframe n1+k1 is descending sub frame, the m1=0；The k1 values meet the time of the first business datum described in first user device transmissions；The m1 values expire Foot causes the second user equipment to receive second authorization message before the first business datum is received.
- 6. method as claimed in claim 5, it is characterised in that for frequency division duplex system, the k1=4 is double for the time-division Work system, k1 >=4.
- 7. method as claimed in claim 5, it is characterised in that for tdd systems, when the subframe n1+k1 is up During subframe, the value of the k1 is identical with the scheduling sequential of the uplink service of long evolving system.
- 8. method as claimed in claim 5, it is characterised in that first user equipment is with Physical Uplink Shared Channel (PUSCH) form sends first business datum.
- 9. method as claimed in claim 5, it is characterised in that first user equipment is with Physical Downlink Shared Channel (PDSCH) form sends first business datum.
- A kind of 10. base station, it is characterised in that including granted unit, wherein：The granted unit is used for：The first authorization message is transmitted in subframe n1 and gives the first user equipment, indicates first user Equipment transmits the first business datum in subframe n1+k1；And transmit the second authorization message in subframe n1+m1 and set to second user It is standby, indicate that the second user equipment receives first business datum in subframe n1+k1；Wherein, the k1 is more than or equal to 0, and the m1 is more than or equal to 0, and the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1<K1, or, the subframe n1+k1 is descending sub frame, the m1=0；The k1 values meet the time of the first business datum described in first user device transmissions；The m1 values expire Foot causes the second user equipment to receive second authorization message before the first business datum is received.
- 11. base station as claimed in claim 10, it is characterised in that the granted unit transmits described first in the following way Authorization message or the second authorization message：The granted unit is in Physical Downlink Control Channel with the first authorization message described in the format transmission of Downlink Control Information Or second authorization message.
- 12. base station as claimed in claim 10, it is characterised in that for frequency division duplex system, the k1=4；For the time-division Duplex system, k1 >=4.
- 13. base station as claimed in claim 10, it is characterised in that for tdd systems, on the subframe n1+k1 is During row subframe, the value of the k1 is identical with the scheduling delay of the uplink service of long evolving system.
- A kind of 14. wireless communication system, it is characterised in that including the base station as described in claim 10 to 13 is any, in addition to First user equipment and second user equipment, wherein：First user equipment is used for：The first authorization message of base station transmission is received in subframe n1, is authorized according to described first The instruction of information transmits the first business datum in subframe n1+k1；The second user equipment is used for：The second authorization message of base station transmission is received in subframe n1+m1, is awarded according to described second The instruction for weighing information receives first business datum in subframe n1+k1；Wherein, the subframe n1+k1 is sub-frame of uplink, m1 >=0, and m1<K1, or, the subframe n1+k1 is descending son Frame, the m1=0；The k1 values meet the time of the first business datum described in first user device transmissions；The m1 values expire Foot causes the second user equipment to receive second authorization message before the first business datum is received.
- 15. system as claimed in claim 14, it is characterised in that first user equipment is additionally operable to：The subframe n1+k1 When being sub-frame of uplink, first business datum is sent with PUSCH forms.
- 16. system as claimed in claim 14, it is characterised in that first user equipment is additionally operable to：The subframe n1+k1 When being descending sub frame, first business datum is sent with PDSCH forms.
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| CN105144813B (en) * | 2013-05-10 | 2020-01-24 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for supporting device-to-device D2D communication in a wireless communication system |
| CN104301075B (en) * | 2013-07-18 | 2017-11-21 | 中国移动通信集团公司 | D2D communication means, base station and system |
| EP3120490B1 (en) * | 2014-03-19 | 2022-05-04 | LG Electronics Inc. | Method of transmitting and receiving device-to-device ue signal in wireless communication system and apparatus therefor |
| CN105101041A (en) * | 2014-05-07 | 2015-11-25 | 夏普株式会社 | Base station, user equipment, and related method |
| CN105337713B (en) * | 2014-08-07 | 2018-11-23 | 上海诺基亚贝尔股份有限公司 | A kind of method and apparatus of the subframe of the discovery resource for distribution type 2b |
| CN107708219A (en) * | 2016-08-08 | 2018-02-16 | 普天信息技术有限公司 | The subframe uplink scheduling timing method of low time delay communication standard |
| CN109600852B (en) * | 2017-09-30 | 2021-11-19 | 华为技术有限公司 | Resource indication method, communication device and network equipment |
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