CN107592626A - Channel access method, apparatus and system - Google Patents

Channel access method, apparatus and system Download PDF

Info

Publication number
CN107592626A
CN107592626A CN201610541534.4A CN201610541534A CN107592626A CN 107592626 A CN107592626 A CN 107592626A CN 201610541534 A CN201610541534 A CN 201610541534A CN 107592626 A CN107592626 A CN 107592626A
Authority
CN
China
Prior art keywords
terminals
transmission
random
pseudo
random seed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610541534.4A
Other languages
Chinese (zh)
Inventor
许文俊
赵捷
付卓然
张玉佩
苟伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201610541534.4A priority Critical patent/CN107592626A/en
Priority to PCT/CN2017/091227 priority patent/WO2018006759A1/en
Publication of CN107592626A publication Critical patent/CN107592626A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a kind of channel access method, apparatus and system, wherein, this method includes：The transmission request that receiving device is sent to equipment D2D terminals, wherein, the transmission request is used to ask allocation of transmission resources；According to the transmission request identical random seed resource is distributed to the transmission opposite end of the D2D terminals and the D2D terminals；Wherein, the random seed resource is used for the corresponding pseudo-random sequence of D2D terminals generation and carries out channel access by the present invention using the pseudo-random sequence, solves the problems, such as that resource utilization is low in channel access in correlation technique.

Description

Channel access method, apparatus and system
Technical field
The present invention relates to the communications field, in particular to a kind of channel access method, apparatus and system.
Background technology
Due to the sharp increase of multimedia service demand, frequency spectrum resource shortage turns into mobile communication facing challenges.Passing In the cellular network of system, direct communication between user is not allowed, although this centralized working method is easy to resource and interference Management and control, but resource utilization is low.In order to improve spectrum utilization efficiency, it is proposed that allow terminal user directly to lead to Device-to-device (Device-to-device, referred to as D2D) communication technology of letter.Compared with cellular communication, D2D communications can be with Transimission power is reduced, saves energy consumption, therefore is expected to the key technology as future mobile communications.
In correlation technique, on the research of channel access technology, it is online to be concentrated mainly on wireless local.Such as：For nothing The disributed media access technology of line LAN, the semi-random back-off method for realizing resource reservation in a wireless local area network etc..But It is that collision probability can substantially increase when the number of users of transmission increases, causes the serious wasting of resources.
For above mentioned problem present in correlation technique, at present it is not yet found that the solution of effect.
The content of the invention
The embodiments of the invention provide a kind of channel access method, apparatus and system, with least solve in correlation technique The problem of resource utilization is low during channel access.
According to one embodiment of present invention, there is provided a kind of channel access method, including：Receiving device is to equipment D2D The transmission request that terminal is sent, wherein, the transmission request is used to ask allocation of transmission resources；Asked according to the transmission to institute State the transmission opposite end distribution identical random seed resource of D2D terminals and the D2D terminals；Wherein, the random seed resource Corresponding pseudo-random sequence is produced for the D2D terminals and carries out channel access using the pseudo-random sequence.
Alternatively, receiving device includes to the transmission request that equipment D2D terminals are sent：D2D terminals are received using physically The uplink resource that Uplink Control Channel PUCCH is sent by uplink scheduling request SR；On the uplink resource Receive the transmission request.
Alternatively, identical to the distribution of the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Random seed resource before, methods described also includes：In the time window of preset length, it is whole to collect one or more D2D The transmission request sent respectively is held, and parses each data volume and/or type of service transmitted and ask transmission services.
Alternatively, identical is distributed to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Random seed resource includes：According to the data volume and/or the type of service to the D2D terminals and the D2D terminals Transmit opposite end distribution identical random seed resource.
Alternatively, identical is distributed to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Random seed resource includes：It is identical to the distribution of the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Dedicated time slot；And/or phase is pre-allocated to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Same spare time slot.
Alternatively, identical is distributed to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Random seed resource includes one below：Asked according to the transmission to the transmission opposite end of the D2D terminals and the D2D terminals Distribute one or more identical random seed resources；According to the transmission request to the D2D terminals and the D2D terminals Transmit opposite end distribution identical random seed resource, offset, resource corresponding to the time slot included by the random seed resource Block unit MRB number.
According to one embodiment of present invention, there is provided another channel access method, including：Sending transmission to base station please Ask, and receive the random seed resource that the base station asks distribution according to the transmission；Pressed based on the random seed resource Corresponding pseudo-random sequence is produced according to preset algorithm；Channel access is carried out according to the pseudo-random sequence.
Alternatively, carrying out channel access according to the pseudo-random sequence includes：Obtained accordingly according to the pseudo-random sequence Resource block unit MRB resource block number；It is linked into the channel belonging to MRB corresponding to the resource block number.
Alternatively, the random seed resource includes dedicated time slot and/or spare time slot.
Alternatively, the preset algorithm includes one below：Kent mappings, linear congruential method.
Alternatively, when the preset algorithm is that Kent maps, mapped and produced according to Kent based on the random seed resource The pseudo-random sequence of raw preset length includes：
The pseudo-random sequence x is calculated according to below equationn+1：
Wherein, xnThe pseudo-random sequence for being n for time-gap number, n are time-gap number, and a is constant, a ∈ (0,1).
Alternatively, the length of the pseudo-random sequence is identical with the number of time slots.
Alternatively, the a=0.7.
Alternatively, when the preset algorithm is linear congruential method, based on the random seed resource according to preset algorithm Producing corresponding pseudo-random sequence includes：The pseudo-random sequence x is calculated according to below equationn+1xn+1：
xn+1=(axn+c)modm；
Wherein, the m is the integer more than A, and A is MRB number of the single time slot that the random seed includes, and a, c divide Preset value that Wei be not related to the A, xnThe pseudo-random sequence for being n for time-gap number, n are time-gap number.
Alternatively, corresponding resource block unit MRB resource block number is obtained according to the pseudo-random sequence to be included：N= [mi*A]；Wherein, the miThe random number in the range of [0,1] is distributed in for the pseudo-random sequence, A is the random seed Including single time slot in correspond to MRB number on frequency domain, [] represents to round downwards, and i is time-gap number.
According to another embodiment of the invention, there is provided a kind of channel access device, including：Receiving module, for connecing The transmission request that receiving unit is sent to equipment D2D terminals, wherein, the transmission request is used to ask allocation of transmission resources；Distribution Module, for distributing identical with machine to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Child resource；Wherein, the random seed resource be used for the D2D terminals produce corresponding pseudo-random sequence and using it is described it is pseudo- with Machine sequence carries out channel access.
According to another embodiment of the invention, there is provided another channel access device, including：Request module, it is used for Transmission request is sent to base station, and receives the random seed resource that the base station asks distribution according to the transmission；Calculate mould Block, for producing corresponding pseudo-random sequence according to preset algorithm based on the random seed resource；AM access module, for basis The pseudo-random sequence carries out channel access.
According to still another embodiment of the invention, there is provided a kind of channel access system, including：The transmitting terminal of D2D communications, The receiving terminal of D2D communications, base station, the base station also includes：First receiving module, the transmission sent for receiving the transmitting terminal Request, wherein, the transmission request is used to ask allocation of transmission resources；Distribute module, for being asked according to the transmission to institute State transmitting terminal and receiving terminal distribution identical random seed resource；
The transmitting terminal includes：Request module, asked for sending the transmission to base station, and receive the base station root According to the random seed resource of the transmission request distribution；First computing module, for based on the random seed resource according to pre- Imputation method produces corresponding pseudo-random sequence；First AM access module, for carrying out channel access according to the pseudo-random sequence；
The receiving terminal includes：Second receiving module, for receive the base station according to it is described transmission ask distribution with Machine child resource；Second computing module, for producing corresponding pseudorandom according to preset algorithm based on the random seed resource Sequence；Second AM access module, for carrying out channel access according to the pseudo-random sequence.
According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and used In the program code for performing following steps：
The transmission request that receiving device is sent to equipment D2D terminals, wherein, the transmission request is used to ask distribution transmission Resource；
Identical is distributed with machine to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request Child resource；
Wherein, the random seed resource is used for the corresponding pseudo-random sequence of D2D terminals generation and utilizes the puppet Random sequence carries out channel access.
By the present invention, the transmission that receiving device to equipment D2D terminals is sent is asked, wherein, the transmission request is used for Allocation of transmission resources is asked, is then distributed according to the transmission request to the transmission opposite end of the D2D terminals and the D2D terminals Identical random seed resource, wherein, the random seed resource is used for the D2D terminals and produces corresponding pseudo-random sequence simultaneously Channel access is carried out using the pseudo-random sequence.Because the transmitting terminal and receiving terminal that are communicated to D2D distribute identical with machine Child resource, therefore consistent pseudo-random sequence can be produced in transmitting-receiving two-end, the utilization rate of Radio Resource can be improved, due to not Randomness with caused pseudo-random sequence between D2D terminal-pairs is relatively good, so in the general of same time slot access same asset Rate is reduced, it is possible to reduce the resource collision occurred in contention access, while realize quick in the case where not controlled by base station The resource access of D2D terminal rooms is realized, can solve the problems, such as that resource utilization is low in channel access in correlation technique.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is network architecture figure according to embodiments of the present invention；
Fig. 2 is a kind of flow chart of channel access method according to embodiments of the present invention；
Fig. 3 is the flow chart of another channel access method according to embodiments of the present invention；
Fig. 4 is a kind of structured flowchart of channel access device according to embodiments of the present invention；
Fig. 5 is the structured flowchart of another channel access device according to embodiments of the present invention；
Fig. 6 is the structured flowchart of channel access system according to embodiments of the present invention；
Fig. 7 is application scenarios schematic diagram according to embodiments of the present invention；
Fig. 8 is distribution random seed schematic diagram in base station according to embodiments of the present invention；
Fig. 9 is the optional flow chart one of generation pseudo-random sequence according to embodiments of the present invention；
Figure 10 is the channel access schematic diagram according to embodiments of the present invention based on chaos sequence；
Figure 11 is the optional flowchart 2 of generation pseudo-random sequence according to embodiments of the present invention；
Figure 12 is transfer process figure according to embodiments of the present invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.
Embodiment 1
The embodiment of the present application can be run in the network architecture shown in Fig. 1, and Fig. 1 is network according to embodiments of the present invention Framework map, as shown in figure 1, the network architecture includes：Base station, multiple terminals, wherein, D2D link are formed between two terminals (D2D communication links), base station and terminal connect.
A kind of channel access method for running on the above-mentioned network architecture is provided in the present embodiment, and Fig. 2 is according to this hair The flow chart of a kind of channel access method of bright embodiment, as shown in Fig. 2 the flow comprises the following steps：
Step S202, the transmission request that receiving device to equipment D2D terminals is sent, wherein, transmission request is used for request point With transfer resource；
Step S204, identical random seed money is distributed to the transmission opposite end of D2D terminals and D2D terminals according to transmission request Source；Optionally, the transmission opposite end of D2D terminals and D2D terminals is respectively transmitting terminal and receiving terminal；
Wherein, random seed resource is used for the corresponding pseudo-random sequence of D2D terminals generation and utilizes pseudo-random sequence to carry out Channel access.
By above-mentioned steps, the transmission that receiving device to equipment D2D terminals is sent is asked, wherein, the transmission request is used In request allocation of transmission resources, then divided according to the transmission request to the transmission opposite end of the D2D terminals and the D2D terminals With identical random seed resource, wherein, the random seed resource is used for the D2D terminals and produces corresponding pseudo-random sequence And carry out channel access using the pseudo-random sequence.Because transmitting terminal and receiving terminal the distribution identical to be communicated to D2D is random Seed resource, therefore consistent pseudo-random sequence can be produced in transmitting-receiving two-end, the utilization rate of Radio Resource can be improved, due to The randomness of caused pseudo-random sequence is relatively good between different D2D terminal-pairs, so in same time slot access same asset Probability is reduced, it is possible to reduce the resource collision occurred in contention access, while realize fast in the case where not controlled by base station Speed realizes the resource access of D2D terminal rooms, can solve the problems, such as that resource utilization is low in channel access in correlation technique.
Alternatively, the executive agent of above-mentioned steps can be network side equipment, such as base station, but not limited to this.
Optionally, receiving device includes to the transmission request that equipment D2D terminals are sent：D2D terminals are received using physically Row control channel (Physical Uplink Control Channel, referred to as PUCCH) is sent by uplink scheduling request SR Uplink resource, the transmission request is received on the uplink resource, because SR only has a bit, so real Border process：First pass through SR and ask uplink resource for sending data transfer request；Then in obtained up-link money Source sends specific data transfer request.
Optionally, identical random seed money is being distributed to the transmission opposite end of D2D terminals and D2D terminals according to transmission request Before source, in addition to：In the time window of preset length, collect the transmission request that one or more D2D terminals are sent respectively, And parse each data volume and/or type of service transmitted and ask transmission services.Further, according to transmission request to The transmission opposite end of D2D terminals and D2D terminals distribution identical random seed resource includes：According to data volume and/or type of service Identical random seed resource is distributed to the transmission opposite end of D2D terminals and D2D terminals.
Optionally, identical random seed resource is distributed to the transmission opposite end of D2D terminals and D2D terminals according to transmission request Including following two：
According to transmission request identical dedicated time slot is distributed to the transmission opposite end of D2D terminals and D2D terminals；
Identical spare time slot is pre-allocated to the transmission opposite end of D2D terminals and D2D terminals according to transmission request.
Optionally, identical random seed resource is distributed to the transmission opposite end of D2D terminals and D2D terminals according to transmission request Including one of in the following manner：
According to transmission request one or more identical random seeds are distributed to the transmission opposite end of D2D terminals and D2D terminals Resource；
According to transmission request identical random seed resource, skew are distributed to the transmission opposite end of D2D terminals and D2D terminals Resource block unit (Mini Resource Block, referred to as MRB) corresponding to time slot included by amount, random seed resource Number.
In the present embodiment, another channel access method for running on the above-mentioned network architecture is additionally provided, Fig. 3 is basis The flow chart of another channel access method of the embodiment of the present invention, as shown in figure 3, the flow comprises the following steps：
Step S302, transmission request is sent to base station, and receive base station and ask the random seed of distribution to provide according to transmission Source；
Step S304, corresponding pseudo-random sequence is produced according to preset algorithm based on random seed resource；
Step S306, channel access is carried out according to pseudo-random sequence.
Alternatively, the executive agent of above-mentioned steps can be D2D terminals etc., but not limited to this.When the D2D terminals are D2D During the receiving terminal of communication, in step s 302, do not include sending transmission request to base station, including receive base station and asked according to transmission The random seed resource of distribution.
Optionally, channel access is carried out according to pseudo-random sequence to specifically include：
S11, corresponding resource block unit MRB resource block number is obtained according to pseudo-random sequence；
S12, it is linked into the channel belonging to MRB corresponding to resource block number.
Optionally, random seed resource includes dedicated time slot and/or spare time slot.
In the present embodiment, preset algorithm includes only being lifted with Kent mappings and linear congruential method herein with a variety of Example explanation：
When preset algorithm is that Kent maps, mapped based on random seed resource according to Kent produce preset length it is pseudo- with Machine sequence includes：
Pseudo-random sequence x is calculated according to below equationn+1：
Wherein, xnThe pseudo-random sequence for being n for time-gap number, the length of pseudo-random sequence is identical with the number of time slot, and n is Time-gap number, a are constant, a ∈ (0,1), it is preferred that a=0.7.
Wherein, the length of pseudo-random sequence is identical with number of time slots.
When preset algorithm is linear congruential method, corresponding pseudorandom is produced according to preset algorithm based on random seed resource Sequence includes：
Pseudo-random sequence x is calculated according to below equationn+1xn+1：
xn+1=(axn+c)modm；
Wherein, the m is the integer more than A, and A is MRB number of the single time slot that the random seed includes, and a, c divide Preset value that Wei be not related to the A, xnThe pseudo-random sequence for being n for time-gap number, n are time-gap number.
According to above two algorithm, corresponding resource block unit MRB resource block number bag is obtained according to pseudo-random sequence Include：N=[mi*A]；
Wherein, miThe miThe random number in the range of [0,1] is distributed in for the pseudo-random sequence, A is to be described with machine MRB number on frequency domain is corresponded in the single time slot that attached bag includes, [] represents to round downwards, and i is time-gap number.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) method that performs each embodiment of the present invention.
Embodiment 2
A kind of channel access device, system are additionally provided in the present embodiment, and the device and system are used to realize above-mentioned reality Example and preferred embodiment are applied, had carried out repeating no more for explanation.As used below, term " module " can be realized The combination of the software and/or hardware of predetermined function.Although device described by following examples is preferably realized with software, It is hardware, or the realization of the combination of software and hardware is also what may and be contemplated.
Fig. 4 is a kind of structured flowchart of channel access device according to embodiments of the present invention, as shown in figure 4, the device bag Include：
Receiving module 40, the transmission request sent for receiving device to equipment D2D terminals, wherein, transmission request is used for Ask allocation of transmission resources；
Distribute module 42, it is random for distributing identical to the transmission opposite end of D2D terminals and D2D terminals according to transmission request Seed resource；
Wherein, random seed resource is used for the corresponding pseudo-random sequence of D2D terminals generation and utilizes pseudo-random sequence to carry out Channel access.
Fig. 5 is the structured flowchart of another channel access device according to embodiments of the present invention, as shown in figure 5, the device Including：
Request module 50, for sending transmission request to base station, and receive base station and the random of distribution is asked according to transmission Seed resource；
Computing module 52, for producing corresponding pseudo-random sequence according to preset algorithm based on random seed resource；
AM access module 54, for carrying out channel access according to pseudo-random sequence.
Fig. 6 is the structured flowchart of channel access system according to embodiments of the present invention, as shown in fig. 6, the system includes： Transmitting terminal 60, the receiving terminal 62 of D2D communications of D2D communications, base station 64,
Base station 64 also includes：
First receiving module 640, asked for the transmission that receiving end/sending end is sent, wherein, transmission request is used to ask to divide With transfer resource；
Distribute module 642, for distributing identical random seed resource to transmitting terminal and receiving terminal according to transmission request；
Transmitting terminal 60 includes：
Request module 600, for sending transmission request to base station, and receive base station and the random of distribution is asked according to transmission Seed resource；
First computing module 602, for producing corresponding pseudo-random sequence according to preset algorithm based on random seed resource；
First AM access module 604, for carrying out channel access according to pseudo-random sequence；
Receiving terminal 62 includes：
Second receiving module 620, the random seed resource for asking to distribute according to transmission for receiving base station；
Second computing module 622, for producing corresponding pseudo-random sequence according to preset algorithm based on random seed resource；
Second AM access module 624, for carrying out channel access according to pseudo-random sequence.
It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or above-mentioned modules are with any The form of combination is located in different processors respectively.
Embodiment 3
The present embodiment is that according to an alternative embodiment of the invention, the application is carried out for combining specific scene and example Describe in detail：
And the present embodiment proposes a kind of semirandom channel access method based on pseudo-random sequence, can reduce random Keep out of the way the collision probability brought, and can solve what how receiving end and originator in the case where not controlled by base station quickly connected Problem.The present invention, to improve the deficiency of existing scheme, enters so that how D2D communications carry out channel access under unauthorized frequency range as an example One step reduces the time delay of data transfer, improves resource utilization, lifts Consumer's Experience.Therefore, currently invention addresses D2D to communicate The channel access technology of unauthorized frequency range, consider how to reduce the collision problem between different D2D UE, and solve correlation technique In following technical problem：
1) when D2D UE have transmission demand and to giving the correct time on base station, base station carries out complete according to reported result to dedicated time slot Resource allocation, to spare time slot carry out pre-allocation of resources, and to different D2D to (D2D pair) distribute it is different with machine Son.
2) different D2D UE carry out associated transport according to the arbitration result of base station using unauthorized frequency range.When shared Gap, the different random sequence that D2D UE produce equal length according to random seed carry out semi-random channel access, reduce different D2D The possibility clashed between UE.The least unit of the communication length of D2D communication frames is MRB (Mini Resource Block), Base station according to the business and data volume of D2D reporting of user be scheduled the communication resource in units of MRB.
For the situation for needing to be scheduled time frequency two-dimensional resources, the present invention propose it is a kind of based on pseudo-random sequence half Random channel access method.And by taking the D2D communications in unauthorized frequency range as an example, the method control of random seed is distributed using base station D2D UE processed produce corresponding pseudo-random sequence, and channel access is carried out using above-mentioned pseudo-random sequence.The present invention is improving resource Utilization rate, while reducing collision probability, it is ensured that D2D UE resource is quickly realized in the case where not controlled by base station Access.
The present embodiment is divided into two parts：Random seed embodiment and the channel access based on pseudo-random sequence are distributed in base station Transmit embodiment.
Distributed in base station in random seed embodiment：
The present embodiment is used for all resource allocation conditions based on time-frequency two-dimensional division thought.Only access is aided in authorize Under (Licensed Assisted Access, referred to as LAA) scene, exemplified by the communication between D2D UE in unauthorized frequency range Illustrating, Fig. 7 is application scenarios schematic diagram according to embodiments of the present invention, as shown in fig. 7,
This scene is mainly directed towards the D2D access problems of unauthorized frequency range, but still needs base station and be scheduled control, is Different D2D are to issuing random seed.
Fig. 8 is distribution random seed schematic diagram in base station according to embodiments of the present invention, and detailed process is as follows：
The transmission request of step Step 1, D2D UE reported datas：The UE for carrying out D2D communications in unauthorized frequency range is needed to pass Defeated request reports base station, and base is asked by uplink scheduling request (Scheduling Request, referred to as SR) using PUCCH Stand and distribute corresponding resource for it；
Step Step 2, base station are collected and distribute random seed：In the time window of certain length, difference is collected in base station D2D UE transmission request, and resource allocation is carried out according to the type and data volume of business.Wherein, dedicated time slot is completely by base Stand and carry out resource allocation, while base station is that D2D distributes identical random seed to (transmitting terminal and receiving terminal of D2D communications), no It is different with D2D pairs of random seed.
It is contemplated that designing suitable channel access mode, resource utilization is improved, while not by base station control In the case of can realize between D2D pairs fast resource access.The method that the present embodiment employs two kinds of generation pseudo-random sequences, And pseudo-random sequence carries out semirandom channel access caused by.
Fig. 9 is the optional flow chart one of generation pseudo-random sequence according to embodiments of the present invention, as shown in figure 9, method one Including as follows：
Step 1：Assuming that it is expressed as D2D UE1 (transmitting terminal) and D2D UE2 (receptions in the presence of two couples of D2D pair End), D2D UE3 (transmitting terminal) and D2D UE4 (receiving terminal).Wherein D2D UE1 and D2D UE2 possess identical random seed S1, D2D UE 3 and D2D UE4 possess identical random seed S2.Utilize different random seed S1And S2Mapped according to Kent Produce the pseudo-random sequence L that length is l1And L2.Random seed is allocated by base station, and span is (0,1).Wherein Kent mappings are a kind of chaotic maps with piecewise-linear, and its kinetics equation is：
Wherein, a ∈ (0,1).
For D2D UE1 and D2D UE2, random seed S1Equivalent to the initial value of above-mentioned kinetics equation, utilize The initial value produces the pseudo-random sequence L that length is l1.And D2DUE3 and D2D UE4 then utilize random seed S2It is same to produce length For l random sequence L2.Sequence length is equal with the number of time slots of shared time slot.If when a length of 4ms of shared time slot, at random Sequence length l is 4.
The reason for selection Kent mappings is because its distribution function is than more uniform, can be mapped to corresponding money with relatively good On source block MRB, and also there is outstanding statistical property.The Kent mappings of generally use take parameter a=0.5, but due to place The missing of device precision is managed, the sequence can be zeroed rapidly, so taking parameter a=0.7 when producing chaos sequence in the present invention.
Assuming that the value of the random seed of base station distribution is 0.5, the length for sharing time slot is 4ms, then can obtain caused random The length of sequence should be 4, by Kent map caused by chaos sequence be 0.7143,0.9524,0.1587,0.2268.The example Corresponding is the situation that D2D UE only distribute a MRB over a slot.
Step 2:The random number that step 1 is obtained is designated as mi(i=1,2 ..., l) map to frequency corresponding to each MRB Section.In the present invention, it is assumed that there are 50 MRB on corresponding frequency domain in a time slot, then the m in the range of [0,1] is will be distributed overiMultiply Its corresponding MRB numbering can be obtained by being rounded again afterwards with 50, and its computational methods is as follows：
Assuming that a time slot has 100 MRB on corresponding frequency domain, then computational methods correspond to as follows：
During actual transmissions, the business that D2D UE need to transmit may need multiple MRB to complete. The present embodiment proposes the method that the corresponding time slot of following several D2D UE distributes multiple MRB, it is assumed that 4 time slots of work, each Time slot needs to distribute 3 MRB for a D2DUE, wherein,
1. base station directly issues 3 random seeds, corresponding different random seed can produce 3 random sequences.Such as Random seed 0.4,0.5 and 0.6 is distributed in base station to D2D UE1.The length of shared time slot is 4ms, then sequence caused by random seed Row length is 4.Random seed 0.4 by Kent map caused by sequence be 0.5714,0.8163,0.6122,0.8746, reflect MRB numberings are 28,40,30,43 corresponding to penetrating；Random seed 0.5 by Kent map caused by sequence be 0.7143, 0.9524th, 0.1587,0.2268, MRB numberings are 35,47,7,11 corresponding to mapping；Random seed 0.6 is mapped by Kent to be produced Raw sequence is 0.8571,0.4762,0.6803,0.9712, and MRB numberings are 42,23,34,48 corresponding to mapping.It is so corresponding It is 28,35 and 42 resource blocks that can take numbering in first shared time slot, and can take numbering on second shared time slot is 40th, 23 and 47 resource block, the like.If the random seed of more than three is distributed in base station, method is same as above；
2. base station is to D2D UE distribute random seed, offset (can arrange, no longer be sent out after agreement by signaling Send) and quantitative value 3.The value of other 2 random seeds can be calculated using the offset.Such as base station distribution random seed Number be 0.5, offset 0.02, if now on a time slot take 3 MRB, actually caused random seed be 0.5, 0.52 and 0.54, then produce random sequence using above-mentioned random seed and mapped.
3. no matter D2D UE need to take how many individual MRB, a random seed, different D2D are all distributed in base station to D2D UE To random seed it is different.Assuming that D2D UE1 be present, when a length of 4ms of its corresponding shared time slot, if now over a slot 3 MRB are taken, then the sequence length actually generated is 4 × 3=12.Assuming that the random seed of base station distribution is 0.5, then pass through Kent mapping caused by sequence be 0.7143,0.9524,0.1587,0.2268,0.3239,0.4628,0.6611,0.9444, 0.1852nd, 0.2646,0.3780,0.5400, after mapping corresponding MRB numbering be 35,47,7,11,16,23,33,47,9,13, 18、27.It when choosing the resource block needed for each time slot, can be selected according to certain rule ordering, such as be by MRB numberings 35th, 47 and 7 resource block is assigned to first time slot, and 11,16 and 23 resource blocks are assigned to second time slot, the like； 3 MRB can be arbitrarily selected to be assigned to first time slot, the optional 3 MRB distribution again from remaining 9 MRB of second time slot To second time slot, the rest may be inferred.Meanwhile the resource block different situations needed over each slot are also deposited, such as four time slots On be respectively necessary for 2,3,3,4 resource blocks, then to the selection of resource block on each time slot, can both use the side of sequential selection Formula, i.e., the resource block of numbering 35,47 is distributed to first time slot, when the resource block of numbering 7,11,16 distributes to second Gap, the rest may be inferred；The mode of any selection resource block, for optional 2 resource blocks of first time slot, second can also be taken Time slot selects 3 MRB from remaining 10 resource blocks, and the rest may be inferred.
Because base station is to transmitting terminal and receiving terminal distribution identical random seed, therefore corresponding transmitting terminal and receiving terminal produce The state of chaos time sequence is consistent, can be linked into identical MRB resource blocks in synchronization, carry out data transmission.
Step3：In each time slot, different D2D UE produce different pseudorandom sequences using different random seeds Row, and corresponding resource block is linked into according to the mapping result of step 2.Because the distribution function of Kent mappings is than more uniform, The probability that different D2D UE collide can be greatly reduced, and algorithm complex is than relatively low, and simple to operate, exploitation is easy.
If in a certain frequency range of a certain time slot, the resource block result of different D2D UE mappings is identical, then collides, Next time slot is then waited to reattempt access.And Kent mappings have good statistical property, so the probability of the above situation occurs It is smaller.Figure 10 is the channel access schematic diagram according to embodiments of the present invention based on chaos sequence.
Figure 11 is the optional flowchart 2 of generation pseudo-random sequence according to embodiments of the present invention, in scheme two, including It is as follows：
Step 1：The method that pseudo-random sequence is produced using linear congruential method is as follows：
xn+1=(axn+c)modm
Wherein, x0Represent random seed (initial value), i-th of D2D pair random seed x0iRepresent.Assuming that in the presence of Two couples of D2D pair are expressed as D2D UE1 (transmitting terminal) and D2D UE2 (receiving terminal), D2D UE3 (transmitting terminal) and D2D UE4 (receiving terminal).Wherein D2D UE1 and D2D UE2 possess identical random seed x01, D2D UE 3 and D2D UE4 possess phase Same random seed x02.Utilize different random seed x01And x02The random of equal length is produced using the method for linear congruence Sequence X1And X2.Wherein the length of random sequence is determined by the number of time slots for sharing time slot.
In above formula, a, c and m are all integer, and the randomness of its sequence derives from modulo operation.Selection for modulus m, should This is big as far as possible, because the cycle of sequence can not possibly be more than m.Assume there are 50 MRB on each time slot in the present invention, so M numerical value should at least be more than 50.M.Greenberger is proved：Producing pseudo-random number sequence with linear multiplicative congruential method has The condition of period m is as follows：
C and m is mutual prime rwmber；
A-1 is prime number p multiple, and wherein p is a-1 and m common divisor；
If m is 4 multiple, a-1 is also 4 multiple.
Specific a, c and m value can determine according to practical situations.If there are 50 MRB, Yi Zhongke on each time slot The situation of energy is a=29, c=23, m=56.If there are 100 MRB, a kind of possible value feelings on frequency domain corresponding to each time slot Condition is a=53, c=37, m=104.
Assuming that the value of the random seed of base station distribution is 1, the length for sharing time slot is 4ms, then can obtain caused stochastic ordering The length of row should be 4, be 52,19,14,37 by sequence caused by linear congruential method.It is D2D UE corresponding to the example at one MRB situation is only distributed on time slot.
Step 2：The random sequence that step 1 is obtained is converted to the random sequence in the range of [0,1], and conversion formula is as follows：
Step 3：The random number y that will be obtained in step 2nMap to frequency range corresponding to each MRB.If in a time slot There are 50 MRB on corresponding frequency domain, then will be distributed over the y in the range of [0,1]nBeing rounded again after being multiplied by 50 can obtain corresponding to it MRB is numbered, and its computational methods is as follows：
If a time slot has 100 MRB on corresponding frequency domain, corresponding computational methods are as follows：
1. base station directly issues 3 random seeds, corresponding different random seed can produce 3 random sequences.Such as Random seed 1,2 and 3 is distributed in base station to D2D UE1.The length of shared time slot is 4ms, then sequence length caused by random seed It is 4.Using random seed 1 by sequence caused by linear congruential method be 52,19,14,37, corresponding to mapping MRB numbering is 46、16、12、33；Random seed 2 is 25,20,43,38 by sequence caused by linear congruential method, and MRB corresponding to mapping is numbered For 22,17,38,33；Random seed 3 is 54,21,16,39 by sequence caused by linear congruential method, and MRB corresponding to mapping is compiled Number be 48,18,14,34.So corresponding, can to take numbering in first shared time slot be 46,22 and 48 resource blocks, second The resource block that numbering is 16,17 and 18 can be taken on shared time slot, the like.If base station distribute more than three with machine Son, method are same as above；
2. base station is to D2D UE distribute random seed, offset (can arrange, no longer be sent out after agreement by signaling Send).The value of other 2 random seeds can be calculated using the offset.Such as base station distribution random seed number is 1, partially Shifting amount is 1, if now taking 3 MRB on a time slot, actually caused random seed is 1,2 and 3, then using upper Random seed generation random sequence is stated to be mapped.
3. no matter D2D UE need to take how many individual MRB, a random seed, different D2D are all distributed in base station to D2D UE To random seed it is different.Assuming that D2D UE1 be present, when a length of 4ms of its corresponding shared time slot, if now over a slot 3 MRB are taken, then the sequence length actually generated is 4 × 3=12.Assuming that the random seed of base station distribution is 1, then pass through line Property sequence caused by congruence method be 52,19,14,37,32,55,50,17,12,35,30,53, corresponding MRB numbering is after mapping 46、16、12、33、28、49、44、15、10、31、26、47., can be according to certain when choosing the resource block needed for each time slot Rule ordering selection, such as by MRB numbering be 46,16 and 12 resource block be assigned to first time slot, 33,28 and 49 resources Block is assigned to second time slot, the like；Can also arbitrarily select 3 MRB to be assigned to first time slot, second time slot from Optional 3 MRB are assigned to second time slot again in remaining 9 MRB, and the rest may be inferred.Meanwhile also deposit and need over each slot Resource block different situations, such as 2,3,3,4 resource blocks are respectively necessary on four time slots, then to resource block on each time slot Selection, both the resource block of numbering 46,16 can be distributed to first time slot by the way of sequential selection, numbering 12, 33rd, 28 resource block distributes to second time slot, and the rest may be inferred；The mode of any selection resource block can also be taken, for the Optional 2 resource blocks of one time slot, second time slot select 3 MRB from remaining 10 resource blocks, and the rest may be inferred.
Because base station is to transmitting terminal and receiving terminal distribution identical random seed, therefore corresponding transmitting terminal and receiving terminal produce The state of linear conguential sequences is consistent, can be linked into identical MRB resource blocks in synchronization, carry out data transmission.
Step4：In each time slot, different D2D UE produce different pseudorandom sequences using different random seeds Row, and corresponding resource block is linked into according to the mapping result of step 3.This method realizes that simply algorithm complex is relatively low, Exploitation is easy.
If in a certain frequency range of a certain time slot, the resource block result of different D2D UE mappings is identical, then collides, Next time slot is then waited to reattempt access.
Figure 12 is transfer process figure according to embodiments of the present invention, is total biography according to the present embodiment as shown in figure 12 Defeated flow chart.
Base station in the present embodiment is D2D to distributing random seed, and in the time window of certain length, base station is collected not Transmission with D2D UE is asked, and the distribution of resource and random seed is carried out according to the type and data volume of business.With machine Son distribution principle be：Base station is that D2D distributes identical random seed to (transmitting terminal and receiving terminal of D2D communications), so that Shared time slot be at war with access when transmitting terminal and receiving terminal can be linked into identical MRB with Fast synchronization；Between different D2D pairs The random seed of distribution is different, so as to reduce the resource collision in contention access.
The present embodiment carries out channel access, the transmitting terminal and receiving terminal root of the communications pair of D2D first based on pseudo-random sequence Produce the pseudo-random sequence of state consistency according to certain generating algorithm for the identical random seed that oneself is distributed according to base station, it is then right The pseudo-random sequence carries out certain computing and obtains its corresponding MRB resource block number, and now transmitting terminal and receiving terminal can be fast Speed is synchronously linked into unified MRB resource blocks and completes data transfer.And the difference between different D2D pairs due to random seed can produce Raw different MRB is numbered so as to access other channel collision frees.
By the present embodiment, the transmission reported according to UE is asked, and base station can give same D2D to distribution identical with machine Son is so as to produce the random sequence of state consistency, and when shared time slot carries out Stochastic accessing, transmitting terminal and receiving terminal can be quickly same Step is linked into identical MRB resource blocks and completes data transfer, shortens turn-on time, because chaos sequence has preferably statistics in itself Characteristic, therefore different D2D UE generations random sequence is different, it is possible to reduce the resource collision occurred in contention access, carry High resource utilization.
Embodiment 4
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：
S1, the transmission request that receiving device to equipment D2D terminals is sent, wherein, transmission request is used to ask distribution transmission Resource；
S2, identical random seed resource is distributed to the transmission opposite end of D2D terminals and D2D terminals according to transmission request；Its In, random seed resource is used for D2D terminals and produces corresponding pseudo-random sequence and carry out channel access using pseudo-random sequence.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. is various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs receiving device according to the program code stored in storage medium The transmission request sent to equipment D2D terminals, wherein, transmission request is used to ask allocation of transmission resources；
Alternatively, in the present embodiment, processor is performed according to transmission according to the program code stored in storage medium Ask to distribute identical random seed resource to the transmission opposite end of D2D terminals and D2D terminals；Wherein, random seed resource is used for D2D terminals produce corresponding pseudo-random sequence and carry out channel access using pseudo-random sequence.
Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.
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, and in some cases, can be with different from shown in order execution herein The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
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 (18)

  1. A kind of 1. channel access method, it is characterised in that including：
    The transmission request that receiving device is sent to equipment D2D terminals, wherein, the transmission request is used to ask distribution transmission money Source；
    According to the transmission request identical random seed is distributed to the transmission opposite end of the D2D terminals and the D2D terminals；
    Wherein, the random seed is used for the corresponding pseudo-random sequence of D2D terminals generation and utilizes the pseudo-random sequence Carry out channel access.
  2. 2. according to the method for claim 1, it is characterised in that the transmission request that receiving device to equipment D2D terminals is sent Including：
    Receive the up-link that D2D terminals utilize physical uplink control channel PUCCH to be sent by uplink scheduling request SR Resource；
    The transmission request is received on the uplink resource.
  3. 3. according to the method for claim 1, it is characterised in that asked according to the transmission to the D2D terminals and institute Before the transmission opposite end distribution identical random seed for stating D2D terminals, methods described also includes：
    In the time window of preset length, collect the transmission request that one or more D2D terminals are sent respectively, and parse each The data volume and/or type of service of transmission services are asked in transmission.
  4. 4. according to the method for claim 3, it is characterised in that according to the transmission request to D2D terminals and described The transmission opposite end distribution identical random seed of D2D terminals includes：
    According to the data volume and/or the type of service phase is distributed to the transmission opposite end of the D2D terminals and the D2D terminals Same random seed.
  5. 5. according to the method for claim 1, it is characterised in that according to the transmission request to D2D terminals and described The transmission opposite end distribution identical random seed of D2D terminals includes：
    According to the transmission request identical dedicated time slot is distributed to the transmission opposite end of the D2D terminals and the D2D terminals； And/or
    Identical spare time slot is pre-allocated to the transmission opposite end of the D2D terminals and the D2D terminals according to the transmission request.
  6. 6. according to the method for claim 1, it is characterised in that according to the transmission request to D2D terminals and described The transmission opposite end distribution identical random seed of D2D terminals includes one below：
    According to the transmission request one or more identicals are distributed to the transmission opposite end of the D2D terminals and the D2D terminals Random seed；
    Asked to the transmission opposite end of the D2D terminals and D2D terminals distribution identical random seed, partially according to the transmission Resource block unit MRB number corresponding to time slot included by shifting amount, the random seed.
  7. A kind of 7. channel access method, it is characterised in that including：
    Transmission request is sent to base station, and receives the random seed that the base station asks distribution according to the transmission；
    Corresponding pseudo-random sequence is produced according to preset algorithm based on the random seed；
    Channel access is carried out according to the pseudo-random sequence.
  8. 8. according to the method for claim 7, it is characterised in that carrying out channel access according to the pseudo-random sequence includes：
    Corresponding resource block unit MRB resource block number is obtained according to the pseudo-random sequence；
    It is linked into the channel belonging to MRB corresponding to the resource block number.
  9. 9. according to the method for claim 7, it is characterised in that the random seed include dedicated time slot and/or it is standby when Gap.
  10. 10. according to the method for claim 7, it is characterised in that the preset algorithm includes one below：Kent mappings, Linear congruential method.
  11. 11. according to the method for claim 8, it is characterised in that when the preset algorithm is that Kent maps, based on described The pseudo-random sequence that random seed maps generation preset length according to Kent includes：
    The pseudo-random sequence x is calculated according to below equationn+1：
    <mrow> <msub> <mi>x</mi> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </msub> <mo>=</mo> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mfrac> <msub> <mi>x</mi> <mi>n</mi> </msub> <mi>a</mi> </mfrac> </mtd> <mtd> <mrow> <mn>0</mn> <mo>&amp;le;</mo> <msub> <mi>x</mi> <mi>n</mi> </msub> <mo>&amp;le;</mo> <mi>a</mi> </mrow> </mtd> </mtr> <mtr> <mtd> <mfrac> <mrow> <mn>1</mn> <mo>-</mo> <msub> <mi>x</mi> <mi>n</mi> </msub> </mrow> <mrow> <mn>1</mn> <mo>-</mo> <mi>a</mi> </mrow> </mfrac> </mtd> <mtd> <mrow> <mi>a</mi> <mo>&amp;le;</mo> <msub> <mi>x</mi> <mi>n</mi> </msub> <mo>&amp;le;</mo> <mn>1</mn> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow>
    Wherein, xnThe pseudo-random sequence for being n for time-gap number, n are time-gap number, and a is constant, a ∈ (0,1).
  12. 12. according to the method for claim 11, it is characterised in that the length of the pseudo-random sequence and the number of time slots It is identical.
  13. 13. according to the method for claim 11, it is characterised in that the a=0.7.
  14. 14. according to the method for claim 8, it is characterised in that when the preset algorithm is linear congruential method, based on institute State random seed includes according to the corresponding pseudo-random sequence of preset algorithm generation：
    The pseudo-random sequence x is calculated according to below equationn+1：
    xn+1=(axn+c)modm；
    Wherein, the m is the integer more than A, and A is MRB number of the single time slot that the random seed includes, and a, c are respectively The preset value related to the A, xnThe pseudo-random sequence for being n for time-gap number, n are time-gap number.
  15. 15. the method according to claim 11 or 14, it is characterised in that provided accordingly according to the pseudo-random sequence Source block unit MRB resource block number includes：N=[mi*A]；
    Wherein, the miThe random number in the range of [0,1] is distributed in for the pseudo-random sequence, A is that the random seed includes Single time slot in correspond to MRB number on frequency domain, [] represents to round downwards, and i is time-gap number.
  16. A kind of 16. channel access device, it is characterised in that including：
    Receiving module, the transmission request sent for receiving device to equipment D2D terminals, wherein, the transmission request is used for please Seek allocation of transmission resources；
    Distribute module is identical for being distributed according to the transmission request to the transmission opposite end of the D2D terminals and the D2D terminals Random seed；
    Wherein, the random seed is used for the corresponding pseudo-random sequence of D2D terminals generation and utilizes the pseudo-random sequence Carry out channel access.
  17. A kind of 17. channel access device, it is characterised in that including：
    Request module, for sending transmission request to base station, and receive the base station according to the transmission ask distribution with Machine；
    Computing module, for producing corresponding pseudo-random sequence according to preset algorithm based on the random seed；
    AM access module, for carrying out channel access according to the pseudo-random sequence.
  18. 18. a kind of channel access system, including：Transmitting terminal, the receiving terminal of D2D communications of D2D communications, base station, it is characterised in that
    The base station also includes：
    First receiving module, asked for receiving the transmission that the transmitting terminal is sent, wherein, the transmission request is used to ask to divide With transfer resource；
    Distribute module, for distributing identical random seed to the transmitting terminal and the receiving terminal according to the transmission request；
    Request module, asked for sending the transmission to base station, and receive the base station according to the transmission request distribution Random seed；
    First computing module, for producing corresponding pseudo-random sequence according to preset algorithm based on the random seed；
    First AM access module, for carrying out channel access according to the pseudo-random sequence；
    The receiving terminal includes：
    Second receiving module, the random seed for asking to distribute according to the transmission for receiving the base station；
    Second computing module, for producing corresponding pseudo-random sequence according to preset algorithm based on the random seed；
    Second AM access module, for carrying out channel access according to the pseudo-random sequence.
CN201610541534.4A 2016-07-08 2016-07-08 Channel access method, apparatus and system Pending CN107592626A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201610541534.4A CN107592626A (en) 2016-07-08 2016-07-08 Channel access method, apparatus and system
PCT/CN2017/091227 WO2018006759A1 (en) 2016-07-08 2017-06-30 Channel access method, apparatus and system, and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610541534.4A CN107592626A (en) 2016-07-08 2016-07-08 Channel access method, apparatus and system

Publications (1)

Publication Number Publication Date
CN107592626A true CN107592626A (en) 2018-01-16

Family

ID=60911988

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610541534.4A Pending CN107592626A (en) 2016-07-08 2016-07-08 Channel access method, apparatus and system

Country Status (2)

Country Link
CN (1) CN107592626A (en)
WO (1) WO2018006759A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113891295A (en) * 2021-11-09 2022-01-04 中国联合网络通信集团有限公司 Information sending method, device and equipment based on D2D technology
WO2024036888A1 (en) * 2022-08-15 2024-02-22 煤炭科学技术研究院有限公司 Mining mobile emergency communication system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109451870B (en) * 2018-05-18 2023-10-10 北京小米移动软件有限公司 Uplink data transmission method, device and computer readable storage medium

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102984699B (en) * 2012-12-03 2016-02-17 中国联合网络通信集团有限公司 D2D processing method of communication data, equipment and system
US9713185B2 (en) * 2012-12-21 2017-07-18 Lg Electronics Inc. Method and device for transmitting discovery signal
WO2015109525A1 (en) * 2014-01-24 2015-07-30 华为技术有限公司 Information transmission method and device
WO2016048428A1 (en) * 2014-09-25 2016-03-31 Intel IP Corporation Apparatuses, systems, and methods for probabilistic transmission of device-to-device (d2d) discovery messages
CN105592523A (en) * 2014-10-21 2016-05-18 中兴通讯股份有限公司 Device discovery apparatus and device discovery method for device-to-device communication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113891295A (en) * 2021-11-09 2022-01-04 中国联合网络通信集团有限公司 Information sending method, device and equipment based on D2D technology
CN113891295B (en) * 2021-11-09 2023-05-02 中国联合网络通信集团有限公司 Information sending method, device and equipment based on D2D technology
WO2024036888A1 (en) * 2022-08-15 2024-02-22 煤炭科学技术研究院有限公司 Mining mobile emergency communication system and method

Also Published As

Publication number Publication date
WO2018006759A1 (en) 2018-01-11

Similar Documents

Publication Publication Date Title
JP5107691B2 (en) Frame dynamic scheduling procedure with subchannel identifier permutation
CN103650376B (en) A kind of method of the group channel access based on representative
US20160366717A1 (en) Signal Processing Method and Device
CN106507486A (en) For the method for transmitting uplink data, the network equipment and terminal unit
CN102769917B (en) Combinational iteration optimization-based resource allocation method for device-to-device system
CN105119632B (en) The communication means suitable for wireless mobile self-organizing network based on multiple frequency-hopping pattern
CN107071905A (en) Communication between devices method, user equipment and base station
CN106454700A (en) D2D (Device-to-Device) communication content distribution scheme based on social network
CN105359605B (en) The system and method for the primary resource block allocation plan based on greedy algorithm of cellular network with self-organizing link terminal
CN102332936B (en) Apparatus and method for managing channel resource in beacon-enabled wireless personal area network (wpan)
Li et al. An RSU-coordinated synchronous multi-channel MAC scheme for vehicular ad hoc networks
CN109618309B (en) Machine communication random access method based on time slot multiplexing
CN107592626A (en) Channel access method, apparatus and system
CN105281864B (en) A kind of data transmission method and device
JP6822736B2 (en) Frequency hopping communication methods and devices
WO2018108007A1 (en) Method and apparatus for generating data, device, computer storage medium
CN110301100A (en) For exempting from the frequency hopping design of authorized transmissions in mobile communication
CN104053122B (en) A kind of method of MTC device Stochastic accessing cellular network
CN105357716A (en) Resource distribution method and device
CN106561066A (en) Method and device for reducing network delay in wireless communication
CN107592673A (en) The processing method of pseudo-random sequence, apparatus and system
WO2019154286A1 (en) Data modulation and demodulation method and apparatus
CN110167141A (en) A kind of transmission method of paging message
CN109862534A (en) Resource allocation method and device
CN107197532A (en) Access processing method and device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180116

WD01 Invention patent application deemed withdrawn after publication