CN107333337A - A kind of accidental access method and device being grouped based on space - Google Patents
A kind of accidental access method and device being grouped based on space Download PDFInfo
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- CN107333337A CN107333337A CN201710651853.5A CN201710651853A CN107333337A CN 107333337 A CN107333337 A CN 107333337A CN 201710651853 A CN201710651853 A CN 201710651853A CN 107333337 A CN107333337 A CN 107333337A
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000012163 sequencing technique Methods 0.000 claims description 103
- 230000008685 targeting Effects 0.000 claims description 99
- 230000004044 response Effects 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013468 resource allocation Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiments of the invention provide a kind of accidental access method and device being grouped based on space, applied to the network equipment, including：Receive the random access request that multiple terminal devices are sent；According to the mark of multiple terminal devices, the equipment group belonging to each terminal device in multiple terminal devices is determined respectively；In multiple terminal devices, it is determined that belonging to the first terminal equipment of target device group；Stochastic accessing processing is carried out to first terminal equipment.Using the technical scheme of the embodiment of the present invention, solve the problems, such as the unjustness in the random access procedure based on time advance information, also the collision probability of random access procedure is reduced to a certain extent, the rate of being successfully accessed is improved, and the energy expenditure of terminal device and the network equipment is reduced indirectly.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of accidental access method being grouped based on space and
Device.
Background technology
It is competing that the method that traditional random access procedure randomly chooses targeting sequencing by terminal device carries out uplink channel resources
Strive, so as to solve the problem of limited channel resources are distributed.But with the increase of terminal device quantity, collision probability also increases therewith
Plus, so as to have impact on the resource allocation performance of system.
In order to reduce the collision probability of terminal, set there has been proposed a kind of terminal for limiting access based on time advance information
The technical scheme of standby quantity, as shown in figure 1, the program comprises the following steps：
Available targeting sequencing is broadcast to terminal device by the network equipment；
Terminal device is randomly chosen targeting sequencing, and passes through PRACH (Physical Random Access
Channel, Physical Random Access Channel) random access request is sent to the network equipment, wherein, taken in the random access request
Mark with the selected targeting sequencing of the terminal device and the terminal device；
The random access request that the network equipment is sent according to the terminal device, passes through PDSCH (Physical
Downlink Shared Channel, Physical Downlink Shared Channel) send RAR (Random-Access- to the terminal device
Response, accidental access response) information；Wherein, it is described to send accidental access response RAR information, bag to the terminal device
Include：
According to determining on the targeting sequencing autocorrelation performance of the selected targeting sequencing of the terminal device
Terminal device number；If the terminal device only one of which on the targeting sequencing, the RAR information is sent to the end
End equipment；If the terminal device on the targeting sequencing has multiple, the RAR information is sent to the terminal device
Time advance information is in the interval terminal device of default time advance information；
The terminal device passes through PUSCH (Physical Uplink Shared according to the RAR information received
Channel, Physical Uplink Shared Channel) send schedule information to the network equipment；
The network equipment sends contention resolution message according to the schedule information received to the terminal device；
After terminal device is successfully accessed, just data can be mutually sent with the network equipment.
Wherein, the time advance information in the technical scheme be the network equipment according to it information transfer between terminal device
The terminal device that time delay is calculated is to the distance of LA Management Room, and the interval siding-to-siding block length of default time advance information is by net
Network equipment determines and constant within the quite a long time that the interval start-stop scope of default time advance information is set by network
The standby basis in its coverage is uniformly distributed random determination.
By above-mentioned technical proposal as can be seen that the random access scheme based on time advance information is carried by preset time
Preceding information interval causes the probability that multiple terminal devices are assigned to same PUSCH to substantially reduce, and is touched so as to significantly reduce
Probability is hit, the rate of being successfully accessed is improved.But because the interval siding-to-siding block length of default time advance information is constant, in addition,
As shown in Fig. 2 the terminal device that the more remote scope of range network device is covered is more, i.e., when the default time advance information area
Between start-stop scope it is bigger when, fall into the interval terminal device of the time advance information more.Therefore, simple preset time carries
Preceding information interval can make probability of the terminal device of range network device farther out in given time advance information interval bigger,
Competition is fiercer, so that the terminal device of distant place has higher collision probability, causes unjustness problem.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of accidental access method being grouped based on space, device and calculated
Machine readable storage medium storing program for executing, to solve the problems, such as the unjustness in the random access procedure based on time advance information.
To reach above-mentioned purpose, the embodiment of the invention discloses a kind of accidental access method being grouped based on space, application
In the network equipment, methods described includes：
The random access request that multiple terminal devices are sent is received, wherein, carried in the random access request described
The mark of terminal device；
According to the mark of the multiple terminal device, each terminal device institute in the multiple terminal device is determined respectively
The equipment group of category；
In the multiple terminal device, it is determined that belong to the first terminal equipment of target device group, the target device group
It is the equipment group that current time slots have the authority for accessing the network equipment；
Stochastic accessing processing is carried out to the first terminal equipment.
In a kind of embodiment of the present invention, methods described also includes：
Statistics needs to access each terminal device of the network equipment when first time accessing the network equipment respectively
Time advance information；
According to the time advance information of each terminal device, initialization space point is carried out to each terminal device
Group.
In a kind of embodiment of the present invention, the time advance information according to each terminal device,
The packet of initialization space is carried out to each terminal device, including：
According to the corresponding time advance information of each terminal device, each terminal device is ranked up, obtained
To the sequence of terminal device；
The sequence of the terminal device is divided into what each equipment group in N number of equipment group, N number of equipment group was included
The quantity of terminal device is equal.
It is described in each terminal device in a kind of embodiment of the present invention, it is determined that belonging to target device
Before the first terminal equipment of group, in addition to：
Determine that current time slots have the packet sequence number for the authority for accessing the network equipment according to the mode of poll, will be described
The corresponding equipment group of packet sequence number is used as the target device group.
In a kind of embodiment of the present invention, the terminal device choosing is also carried in the random access request
The targeting sequencing selected, it is described to first terminal equipment progress access processing, including：
When the number of the first terminal equipment is multiple, determine respectively each leading in target targeting sequencing set
The number of the corresponding first terminal equipment of sequence, the target targeting sequencing set is before the first terminal equipment is selected
Lead sequence composition；
If the number of the corresponding first terminal equipment of each targeting sequencing in the target targeting sequencing set is 1,
Accidental access response RAR information is then sent to the first terminal equipment, so that the first terminal equipment accesses the network
Equipment；
If in the target targeting sequencing set, the number that there is the corresponding first terminal equipment of the first targeting sequencing is more than
1, then in the corresponding first terminal equipment of first targeting sequencing, determine corresponding time advance information in the default time
Second terminal equipment in Advanced information interval, sends accidental access response RAR information to the second terminal equipment, so that institute
State second terminal equipment and access the network equipment.
, should the embodiment of the invention also discloses a kind of accidental access device being grouped based on space to reach above-mentioned purpose
For the network equipment, described device includes：
Receiving module, the random access request for receiving multiple terminal devices transmission, wherein, the random access request
Carry the mark of the terminal device；
First determining module, for the mark according to the multiple terminal device, determines the multiple terminal device respectively
In each terminal device belonging to equipment group；
Second determining module, in the multiple terminal device, it is determined that the first terminal for belonging to target device group is set
Standby, the target device group is the equipment group that current time slots have the authority for accessing the network equipment；
Processing module, for carrying out Stochastic accessing processing to the first terminal equipment.
In a kind of embodiment of the present invention, described device also includes：
Statistical module, needs each terminal device for accessing the network equipment to access the net in first time for counting
Time advance information during network equipment；
Grouping module, for the time advance information according to each terminal device, enters to each terminal device
Row initialization space packet.
In a kind of embodiment of the present invention, the grouping module, including：
Sequencing unit, for according to the corresponding time advance information of each terminal device, being set to each terminal
It is standby to be ranked up, obtain the sequence of terminal device；
Division unit, for the sequence of the terminal device to be divided into N number of equipment group, N number of equipment group each
The quantity for the terminal device that equipment group is included is equal.
In a kind of embodiment of the present invention, described device also includes：
3rd determining module, for it is determined that before the first terminal equipment, when determining current according to the mode of poll
Gap has the equipment group sequence number for the authority for accessing the network side equipment, using the corresponding equipment group of the equipment group sequence number as
The target device group.
In a kind of embodiment of the present invention, the terminal device choosing is also carried in the random access request
The targeting sequencing selected, the processing module, including：
Determining unit, for when the number of the first terminal equipment is multiple, target preamble sequence set to be determined respectively
The number of the corresponding first terminal equipment of each targeting sequencing in conjunction, the target targeting sequencing set is by the first terminal
The selected targeting sequencing composition of equipment；
First processing units, for the corresponding first terminal of each targeting sequencing in the target targeting sequencing set
In the case that the number of equipment is 1, accidental access response RAR information is sent to the first terminal equipment, so that described the
One terminal device accesses the network equipment；
Second processing unit, in the target targeting sequencing set, there is the first targeting sequencing corresponding first eventually
The number of end equipment is more than in the case of 1, in the corresponding first terminal equipment of first targeting sequencing, when determining corresponding
Between Advanced information default time advance information interval in second terminal equipment, send accidental access response RAR information to
The second terminal equipment, so that the second terminal equipment accesses the network equipment.
To reach above-mentioned purpose, the embodiment of the invention also discloses a kind of computer-readable recording medium, the computer
Readable storage medium storing program for executing internal memory contains computer program, and the computer program is realized described in any of the above when being executed by processor
Method and step.
As seen from the above technical solution, the embodiments of the invention provide it is a kind of based on space be grouped accidental access method and
Device, when being connected for the first time with the network equipment after installing terminal equipment completion, the network equipment counts the terminal and set
Standby time advance information simultaneously carries out the packet of initialization space to the terminal device according to the sequence of the time advance information,
And ensure that the terminal device quantity in each packet is equal.In the random access procedure, determined to work as according to the mode of poll
Preceding time slot has the packet for the authority for accessing the network equipment so that the terminal for having identical quantity in equal time interval is set
The channel resource of standby competition as much, the i.e. different far and near terminal devices of range network device equiprobable can be linked into net
Network equipment, solves the problems, such as the unjustness in the random access procedure based on time advance information, also reduces to a certain extent
The collision probability of random access procedure, improves the rate of being successfully accessed, the energy of terminal device and the network equipment is reduced indirectly
Consumption.
Certainly, implementing any product or method of the present invention must be not necessarily required to while reaching all the above excellent
Point.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the signaling diagram of the radio access technology based on time advance information；
Fig. 2 is the unfair problem schematic diagram that produces in the radio access technology based on time advance information；
Fig. 3 is grouped for a kind of initialization space for the accidental access method being grouped based on space provided in an embodiment of the present invention
Schematic flow sheet；
Fig. 4 is a kind of accidental access method being grouped based on space provided in an embodiment of the present invention applied to the network equipment
Schematic flow sheet；
Fig. 5 is grouped for a kind of initialization space for the accidental access device being grouped based on space provided in an embodiment of the present invention
Structural representation.
Fig. 6 is a kind of accidental access device being grouped based on space provided in an embodiment of the present invention applied to the network equipment
Structural representation；
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Firstly the need of explanation, the heretofore described network equipment includes the equipment that can connect network, such as base
Stand, relay station etc. or terminal device, it is that all terminal devices and network equipment position are fixed that it, which is applicable scene,.
To solve the problems, such as unjustness of the prior art, the embodiments of the invention provide it is a kind of based on space be grouped with
Machine cut-in method, device and computer-readable recording medium.In the program, all fixed positions in network equipment coverage
Terminal device in first time access network device, the network equipment can to terminal device carry out initialization space packet.Fig. 3 is
A kind of initialization space of accidental access method being grouped based on space provided in an embodiment of the present invention is grouped schematic flow sheet, bag
Include：
S301：Respectively statistics need each terminal device of access network device in first time access network device when
Between Advanced information.
In force, the network equipment can be to the multiple available targeting sequencings of end-point device broadcast in each time slot, and remember
The time that each targeting sequencing is broadcasted is recorded, when terminal device wants access network device for the first time after installation is complete,
A targeting sequencing is then randomly choosed from the multiple available targeting sequencings received, and is sent on prach to the network equipment
Random access request.At least include the identification information and selected targeting sequencing of the terminal device in random access request.Net
Network equipment records targeting sequencing in random access request after the random access request of terminal device transmission is received
The reception time；The time received according to the targeting sequencing in current time slots by the network equipment and the difference for the time being broadcasted
The associated information calculations such as value go out the time advance information of the terminal device；By the time advance information of the terminal device and the terminal
Storage corresponding to the identification information of equipment is into the network equipment.
It should be noted that the time advance information of terminal device is influenceed by the distance of terminal device and LA Management Room,
It is unrelated with selected targeting sequencing.Therefore, in the case of terminal device and the fixation of network equipment position, each terminal device
Only correspond to a time advance information.
Wherein, the computational methods of the time advance information of terminal device are prior art, are not being repeated herein.
S302：According to the corresponding time advance information of each terminal device, initialization space is carried out to each terminal device
Packet.
Optionally, the network equipment can be ranked up according to time advance information to terminal device, then further according to sequence
As a result terminal device is grouped, accordingly, S302 processing procedure can be as follows：According to each terminal device it is corresponding when
Between Advanced information, each terminal device is ranked up, the sequence of terminal device is obtained；The sequence of terminal device is divided into N
The quantity for the terminal device that each equipment group is included is equal in individual equipment group, N number of equipment group.
In force, the time advance information of terminal device of the network equipment first to counting on is ranked up, and then will
Corresponding each terminal device is arranged according to the ranking results, obtains the sequence of terminal device.
Wherein, the ordering rule of time advance information can be ascending order arrangement, or descending is arranged；N is default
Packet group number, the numerical value can be determined by the person skilled of this area according to practical application scene.
In addition, the division of terminal device sequence can also have other modes, for example, being set with the terminal included in equipment group
The difference for the terminal device number that standby number is included with average each equipment group is divided no more than default difference is condition.Lift
Example explanation, it is assumed that a total of 15 terminal devices, N values are 3, and default difference is 1, then the end that average each equipment group is included
End equipment number is 5.The terminal device included according to the terminal device number included in equipment group with average each equipment group
The difference of number is division condition no more than default difference, 15 terminal devices is divided into 3 groups, then in this 3 groups of equipment groups
Comprising terminal device number can be respectively 4,5,6.
It should be noted that default size of the difference can be by the person skilled of this area according to practical application scene
To be adjusted flexibly, default difference is smaller, then the terminal device number that each equipment group is included closer to, that is, divide more uniform,
Competition in random access procedure between each terminal device is also more fair.
After the packet of initialization space terminates, if the terminal device in network equipment coverage does not change, the packet
Situation is no longer changed, and corresponding terminal device can be arranged according to the packet situation in follow-up each random access procedure
Access network device.If there is the terminal device newly increased in network equipment coverage, need to reinitialize space packet.
Fig. 4 is a kind of schematic flow sheet for the accidental access method being grouped based on space provided in an embodiment of the present invention, should
Method is applied to the network equipment, including：
S401：Receive the random access request that multiple terminal devices are sent.
Wherein, the mark of terminal device and the targeting sequencing of terminal device selection are at least carried in random access request,
Certainly, in practical application, other information can also be carried in the random access request, the application is defined not to this.
In force, all end-point device broadcasts that each time slot network equipment can be into its coverage are available leading
Sequence, the number of targeting sequencing can have multiple, and such as 3GPP LTE provide that each cell is used to compete the leading of Stochastic accessing
Sequence number is no more than 64.Terminal device is after the targeting sequencing of network equipment broadcast is received, if being currently needed for access network
Network equipment, then randomly choose a targeting sequencing from the targeting sequencing received, then carries the targeting sequencing random
In access request, and then the random access request is sent to the network equipment by PRACH；If terminal device need not currently be accessed
The network equipment, then do not deal with for the targeting sequencing received.If multiple terminal devices are in same time slot, to same net
Network equipment sends random access request, then the network equipment can receive the random access request of multiple terminal devices transmission.
It should be noted that when only one of which terminal device have sent random access request, then in random access procedure
Without other-end equipment and its competitive channel resource, i.e., in the absence of unjustness problem, the radio access technology of the terminal device
It is same as the prior art, it will not be repeated here.
S402：According to the mark of multiple terminal devices, determine respectively belonging to each terminal device in multiple terminal devices
Equipment group.
In force, during the packet of initialization space, the network equipment has the identification information for storing each terminal device, time to carry
Preceding information and packet situation.The network equipment is received after the random access request of multiple terminal devices, according to random access request
The mark of the terminal device of middle carrying, the identification information that itself and the network equipment itself are stored is compared, so that it is determined that multiple
The packet belonging to each terminal device in terminal device, i.e. equipment group.
S403：In multiple terminal devices, it is determined that belonging to the first terminal equipment of target device group.
Wherein, target device group is the equipment group for the authority that current time slots have access network device.
In force, the network equipment is in the multiple terminal devices of request access, respectively by belonging to each terminal device
The target device group that be grouped has the authority of access network device with current time slots compares.If the packet belonging to terminal device is just
It is the target device group for the authority that current time slots have access network device, it is determined that the terminal device is first terminal equipment.Example
Such as, it is assumed that terminal device sequence is divided into 1 when initializing space packet, 2,3 three equipment groups, the target of current time slots is set
Standby group is the 2nd group, and the network equipment receives the random access request that 5 terminal devices are sent, and mark is respectively a, b, c, d, e.
Wherein, a and b belong to the 1st group, and c and e belong to the 2nd group, and d belongs to the 3rd group, then current time slots are in this 5 terminal devices received
In, the terminal device for belonging to target device group only has c and e, and the terminal device for belonging to target device group, which is called first terminal, to be set
It is standby.For other be not belonging to the terminal device of target device group or in follow-up access procedure access failure terminal device,
Then need to wait Stochastic accessing next time.
In practical application, it is determined that currently there is the packet sequence number of access authority, can accordingly it locate in the way of poll
Reason process can be as follows：Determine that current time slots have the packet sequence number of the authority of access network device according to the mode of poll, will
The corresponding equipment group of packet sequence number is used as target device group.
In random access procedure, in order to avoid the access of terminal device in the accidental access method based on time advance information
Authority is influenceed by distance, and the network equipment each time slot by way of poll, which only assigns an equipment group, access authority.Example
Such as, in first time slot, the network equipment assigns first and is grouped access authority, and in second time slot, the network equipment assigns second point
Group access authority, by that analogy.Therefore, the first packet is the target device group of first time slot, and second packet is second
The target device group of individual time slot.
The access order of each equipment group can be consistent with time slot or arbitrarily set by technical staff, for example, false
If terminal device sequence is divided into 1 successively when initializing space packet, 2,3 three equipment groups, then according to the mode of poll
Assigning the situation of each equipment group access authority has：First time slot assigns the 1st group of access authority, and second time slot assigns the 2nd group
Access authority, the 3rd time slot assigns the 3rd group of access authority, and the 4th time slot assigns the 1st group of access authority again, by that analogy；
Or first time slot assigns the 2nd group of access authority, second time slot assigns the 3rd group of access authority, and the 3rd time slot assigns the 1st
Group access authority, the 4th time slot assigns the 2nd group of access authority, by that analogy；Or first time slot assigns the 3rd group of access right
Limit, second time slot assigns the 1st group of access authority, and the 3rd time slot assigns the 2nd group of access authority, and the 4th time slot assigns the 3rd
Group access authority, by that analogy；
S404：Stochastic accessing processing is carried out to first terminal equipment.
The network equipment is determined after first terminal equipment, and carrying out Stochastic accessing processing, i.e. network to first terminal equipment sets
Standby sent first by PDSCH to first terminal terminal device in accidental access response RAR information, accidental access response carries
The network equipment is the information such as PUSCH marks that first terminal equipment is distributed, for sending schedule information；Terminal device is received
After accidental access response RAR information, schedule information is sent to the network equipment by PUSCH, then the network equipment is according to receiving
Schedule information to terminal device send contention resolution message, so far random access procedure complete.
Because the reception and transmission of schedule information and the transmission of contention resolution message are prior art, no longer go to live in the household of one's in-laws on getting married herein
State, below main the processing procedure that the network equipment sends accidental access response RAR information to terminal device is discussed in detail.
In this step, after the network equipment determines to belong to the first terminal equipment of target device group, the can also be judged
Whether the number of one terminal device is one, if the number of first terminal equipment be one, to the terminal device carry out with
The method of machine access processing is same as the prior art, will not be repeated here；If the number of first terminal equipment is multiple, need
First terminal equipment is further screened according to time advance information interval, specific processing procedure can be：Root
Determine the corresponding first terminal of each targeting sequencing in target targeting sequencing set respectively according to the autocorrelation performance of targeting sequencing
The number of equipment, target targeting sequencing set is made up of the selected targeting sequencing of first terminal equipment；If target targeting sequencing
The number of the corresponding first terminal equipment of each targeting sequencing in set is 1, then send accidental access response RAR information to
First terminal equipment, so that the first terminal equipment access network device；If in target targeting sequencing set, having first leading
The number of the corresponding first terminal equipment of sequence is more than 1, then in the corresponding first terminal equipment of the first targeting sequencing, it is determined that pair
Second terminal equipment of the time advance information answered in default time advance information interval, sends accidental access response RAR
Information gives second terminal equipment, so that second terminal equipment access network device.
In force, because each terminal device is to select targeting sequencing by random manner, it is thus possible to meeting
There is the situation that multiple terminal devices have selected same targeting sequencing.So in above-mentioned steps, when first terminal equipment
When number is multiple, then the set of target targeting sequencing and the relation of first terminal equipment room have two kinds of situations：
The first situation, multiple selected targeting sequencings of first terminal equipment are different, then target preamble sequence set
Each targeting sequencing in conjunction corresponds to 1 first terminal equipment respectively.For example, it is assumed that have 5 first terminals equipment a, b, c, d,
E, each selected targeting sequencing of first terminal equipment is respectively A, B, C, D, E, then target preamble sequence set be combined into A, B, C, D,
E}。
There is part first terminal equipment to have selected identical targeting sequencing in second of situation, multiple first terminal equipment,
Now, one or more of target targeting sequencing set targeting sequencing has corresponded to multiple first terminal equipment respectively.For example, false
Provided with 5 first terminal equipment a, b, c, d, e, each selected targeting sequencing of first terminal equipment is respectively A, B, A, B, C, i.e.,
A and c have selected same targeting sequencing A, b and d and have selected same targeting sequencing B, then target preamble sequence set be combined into A, B,
C}.Wherein, 2 first terminal equipment a and c of targeting sequencing A correspondences, targeting sequencing B correspondences 2 first terminal equipment b and d.
The targeting sequencing of the multiple first terminal equipment of correspondence is referred to as the first targeting sequencing in target targeting sequencing set.
Due to each targeting sequencing one channel resource of correspondence, for the first above-mentioned situation, i.e. target preamble sequence set
In conjunction, each targeting sequencing corresponds to a first terminal equipment, then the network equipment can directly transmit RAR information to corresponding first
Terminal device, so that the first terminal equipment access network device.Therefore, in above-mentioned correspondence example, the network equipment can be distinguished
To terminal device a, b, c, d, e sends RAR information.
For above-mentioned second of situation, that is, when there is the first targeting sequencing multiple first terminal equipment of correspondence, in order to reduce
Collision probability in follow-up access procedure, i.e., avoid multiple terminal devices from sending information, network on same channel resource as far as possible
Equipment determines corresponding time advance information in the default time in the corresponding multiple first terminal equipment of the first targeting sequencing
Second terminal equipment in Advanced information interval, sends accidental access response RAR information and gives the second terminal equipment so that this
Two terminal equipment access network equipment.With reference to corresponding example, it is recognised that A and B are the first targeting sequencing, assume simultaneously
First terminal equipment of the time advance information in default time advance information interval has a and d, then a and d are second terminal
Equipment.Therefore, in this example embodiment, the network equipment only can send RAR information to terminal device a, d, e.
Wherein, default time advance information interval can be by the person skilled of this area according to practical application scene
To determine, or, the network equipment can also be based on default siding-to-siding block length, random true according to being uniformly distributed in its coverage
It is fixed, and dynamically updated in each time slot, wherein, the siding-to-siding block length can be changed no longer under same application scenarios.
As can be seen that a kind of Stochastic accessing side being grouped based on space provided in an embodiment of the present invention from above steps
Method, by terminal device carry out initialization space be grouped, and poll assign each packet access authority, effectively solve base
Unjustness problem in the random access procedure of time advance information；Meanwhile, it is interval with time advance information by packet
Dual limitation, reduce further the collision probability in random access procedure, improve the rate of being successfully accessed.
Corresponding with a kind of above-mentioned accidental access method based on space packet, the embodiment of the present invention additionally provides one kind
The accidental access device being grouped based on space.With a kind of initialization of accidental access method being grouped based on space shown in Fig. 3
Space packet flow is corresponding, and Fig. 5 is first for a kind of accidental access device being grouped based on space provided in an embodiment of the present invention
Beginningization space packet configuration schematic diagram, including：
Statistical module 501, needs each terminal device of access network device to be set in first time access network for counting
Time advance information when standby；
Grouping module 502, for the time advance information according to each terminal device, is carried out initial to each terminal device
Change space packet.
In actual applications, grouping module 502 can include sequencing unit and division unit.
Sequencing unit, for according to the corresponding time advance information of each terminal device, arranging each terminal device
Sequence, obtains the sequence of terminal device；
Division unit, for the sequence of terminal device to be divided into N number of equipment group, N number of equipment group into each equipment group institute
Comprising the quantity of terminal device be equal.
It is corresponding applied to the flow of the network equipment with a kind of accidental access method being grouped based on space shown in Fig. 4,
Fig. 6 is a kind of structural representation that the network equipment is applied to based on the accidental access device that space is grouped provided in an embodiment of the present invention
Figure, including：
Receiving module 601, the random access request for receiving multiple terminal devices transmission, wherein, random access request
Carry the mark of terminal device；
First determining module 602, for the mark according to multiple terminal devices, is determined every in multiple terminal devices respectively
Equipment group belonging to individual terminal device；
Second determining module 603, in multiple terminal devices, it is determined that the first terminal for belonging to target device group is set
Standby, target device group is the equipment group for the authority that current time slots have access network device；
In force, before the second determining module 603, in addition to the 3rd determining module, for it is determined that first terminal is set
Before standby, determine that current time slots have the equipment group sequence number of the authority of access network end equipment according to the mode of poll, by equipment
The corresponding equipment group of group sequence number is used as target device group.
Processing module 604, for carrying out Stochastic accessing processing to first terminal equipment.
Wherein, processing module 604 can also include：Determining unit, first processing units or second processing unit.
Determining unit, for when the number of first terminal equipment is multiple, determining respectively in target targeting sequencing set
The corresponding first terminal equipment of each targeting sequencing number, the set of target targeting sequencing is selected by first terminal equipment
Targeting sequencing is constituted；
First processing units, for the corresponding first terminal equipment of each targeting sequencing in target targeting sequencing set
Number be 1 in the case of, send accidental access response RAR information to terminal device so that terminal equipment access network is set
It is standby；
Second processing unit, in target targeting sequencing set, there is the corresponding first terminal of the first targeting sequencing
The number of equipment is more than in the case of 1, in the corresponding first terminal equipment of the first targeting sequencing, determines corresponding time advance
Second terminal equipment of the information in default time advance information interval, sends accidental access response RAR information whole to second
End equipment, so that second terminal equipment access network device.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, and computer-readable recording medium internal memory is contained
Computer program, realizes a kind of connecing at random based on space packet shown in Fig. 3 and Fig. 4 when computer program is executed by processor
Enter the method and step of method.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for device
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent substitution and improvements made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of accidental access method being grouped based on space, it is characterised in that methods described is applied to the network equipment, the side
Method includes：
The random access request that multiple terminal devices are sent is received, wherein, the terminal is carried in the random access request
The mark of equipment；
According to the mark of the multiple terminal device, determine respectively belonging to each terminal device in the multiple terminal device
Equipment group；
In the multiple terminal device, it is determined that belonging to the first terminal equipment of target device group, the target device group is to work as
Preceding time slot has the equipment group for the authority for accessing the network equipment；
Stochastic accessing processing is carried out to the first terminal equipment.
2. according to the method described in claim 1, it is characterised in that methods described also includes：
Respectively statistics need to access each terminal device of the network equipment when first time accessing the network equipment when
Between Advanced information；
According to the time advance information of each terminal device, the packet of initialization space is carried out to each terminal device.
3. method according to claim 2, it is characterised in that described to be believed according to the time advance of each terminal device
Breath, the packet of initialization space is carried out to each terminal device, including：
According to the corresponding time advance information of each terminal device, each terminal device is ranked up, end is obtained
The sequence of end equipment；
The sequence of the terminal device is divided into the terminal that each equipment group is included in N number of equipment group, N number of equipment group
The quantity of equipment is equal.
4. according to the method described in claim 1, it is characterised in that described in each terminal device, it is determined that belonging to target
Before the first terminal equipment of equipment group, in addition to：
Determine that current time slots have the packet sequence number for the authority for accessing the network equipment according to the mode of poll, by the packet
The corresponding equipment group of sequence number is used as the target device group.
5. according to the method described in claim 1, it is characterised in that the terminal is also carried in the random access request and is set
The targeting sequencing of alternative, it is described to first terminal equipment progress access processing, including：
When the number of the first terminal equipment is multiple, each targeting sequencing in target targeting sequencing set is determined respectively
The number of corresponding first terminal equipment, the target targeting sequencing set is by the selected leading sequence of the first terminal equipment
Row composition；
If the number of the corresponding first terminal equipment of each targeting sequencing in the target targeting sequencing set is 1, send out
Accidental access response RAR information is sent to the first terminal equipment, so that the first terminal equipment accesses the network equipment；
If in the target targeting sequencing set, the number that there is the corresponding first terminal equipment of the first targeting sequencing is more than 1, then
In the corresponding first terminal equipment of first targeting sequencing, determine corresponding time advance information in default time advance
Second terminal equipment in information interval, sends accidental access response RAR information to the second terminal equipment, so that described the
Two terminal devices access the network equipment.
6. a kind of accidental access device being grouped based on space, it is characterised in that described device is applied to the network equipment, the dress
Put including：
Receiving module, the random access request for receiving multiple terminal devices transmission, wherein, the random access request is carried
There is the mark of the terminal device；
First determining module, for the mark according to the multiple terminal device, is determined in the multiple terminal device respectively
Equipment group belonging to each terminal device；
Second determining module, in the multiple terminal device, it is determined that belonging to the first terminal equipment of target device group, institute
It is the equipment group that current time slots have the authority for accessing the network equipment to state target device group；
Processing module, for carrying out Stochastic accessing processing to the first terminal equipment.
7. device according to claim 6, it is characterised in that described device also includes：
Statistical module, needs each terminal device for accessing the network equipment to access the network in first time for statistics and sets
Time advance information when standby；
Grouping module, for the time advance information according to each terminal device, is carried out just to each terminal device
Beginningization space is grouped.
8. device according to claim 7, it is characterised in that the grouping module, including：
Sequencing unit, for according to the corresponding time advance information of each terminal device, entering to each terminal device
Row sequence, obtains the sequence of terminal device；
Division unit, for the sequence of the terminal device to be divided into N number of equipment group, N number of equipment group into each equipment
The quantity of the included terminal device of group is equal.
9. device according to claim 6, it is characterised in that the terminal is also carried in the random access request and is set
The targeting sequencing of alternative, the processing module, including：
Determining unit, for when the number of the first terminal equipment is multiple, determining respectively in target targeting sequencing set
The corresponding first terminal equipment of each targeting sequencing number, the target targeting sequencing set is by the first terminal equipment
Selected targeting sequencing composition；
First processing units, for the corresponding first terminal equipment of each targeting sequencing in the target targeting sequencing set
Number be 1 in the case of, accidental access response RAR information is sent to the first terminal equipment, so that described first eventually
End equipment accesses the network equipment；
Second processing unit, sets in the target targeting sequencing set, there is the corresponding first terminal of the first targeting sequencing
Standby number is more than in the case of 1, in the corresponding first terminal equipment of first targeting sequencing, determines that the corresponding time carries
Second terminal equipment of the preceding information in default time advance information interval, sends accidental access response RAR information to described
Second terminal equipment, so that the second terminal equipment accesses the network equipment.
10. a kind of computer-readable recording medium, it is characterised in that the computer-readable recording medium internal memory contains computer
Program, the computer program realizes claim 1-5 any described method and steps when being executed by processor.
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| CN111510286A (en) * | 2020-03-17 | 2020-08-07 | 哈尔滨工业大学 | Error code negotiation method of quantum key distribution system |
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| CN107333337B (en) | 2019-10-15 |
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