CN105900515B - A kind of accidental access method and equipment - Google Patents
A kind of accidental access method and equipment Download PDFInfo
- Publication number
- CN105900515B CN105900515B CN201480035538.4A CN201480035538A CN105900515B CN 105900515 B CN105900515 B CN 105900515B CN 201480035538 A CN201480035538 A CN 201480035538A CN 105900515 B CN105900515 B CN 105900515B
- Authority
- CN
- China
- Prior art keywords
- prach
- random access
- bandwidth value
- determining
- base station
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 94
- 238000013507 mapping Methods 0.000 claims abstract description 42
- 230000000977 initiatory effect Effects 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000004590 computer program Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 101001090074 Homo sapiens Small nuclear protein PRAC1 Proteins 0.000 description 1
- 102100034766 Small nuclear protein PRAC1 Human genes 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of accidental access method and equipment, comprising: for user terminal before initiating random access, measurement obtains the signal covering grade of base station；According to the mapping relations between preset signal covering grade and bandwidth value, the corresponding bandwidth value of signal covering grade that measurement obtains is determined；According to determining bandwidth value, the Physical Random Access Channel PRACH for meeting bandwidth value is determined, the PRACH of the corresponding different-format of different band width values, bandwidth value is smaller, and the symbolic number that the protection interval GP for including in corresponding PRACH format is occupied is fewer；Utilize determining PRACH, random access request is sent to the base station, through user terminal when initiating random access, suitable bandwidth value is selected according to the signal covering grade of base station, random access is initiated using the PRACH for meeting the bandwidth value, for different band width values, the GP in PRACH subframe structure occupies symbolic number and accordingly reduces, so that the resource for being used for transmission data increases, random access efficiency is effectively improved.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of accidental access method and equipment.
Background technique
With M2M (English: Machine to Machine communication；Chinese: machine communication) application get over
Come it is more extensive, such as: vehicle remote communication, consumer electronics, fleet management, intelligent metering etc., but due to business difference, no
Requirement with business to data rate is different, this just needs M2M system to support different bandwidth.
Currently, in GSM (English: Global System for Mobile communications；Chinese: the whole world is mobile
Communication system) in, PRACH (English: Physical Random Access Channel；Chinese: Physical Random Access Channel)
A kind of corresponding specific bandwidth (200KHz).PRACH is with AB (English: Access Burst；Chinese: access burst pulse train)
Form performance.The structure of AB are as follows: contain preceding TB (English: Tail symbol；Chinese: tail symbol) account for 8 symbols；TSC (English
Text: Training Sequence Code；Chinese: training sequence code) account for 41 symbols；Data accounts for 36 symbols；TB accounts for 3 afterwards
Symbol；GP (English: Guard Period；Chinese: guard time) account for 68.25 symbols.
Since GP length value is related with cell coverage area, channel delay, and cell coverage area is bigger, and channel delay is got over
It is long.But in gsm, GP is generally a fixed value.
Communication system used in M2M belongs to narrow-band communication system, the system bandwidth of narrow-band communication system and the system of GSM
Bandwidth is compared, and the system bandwidth of narrow-band communication system is less than the system bandwidth of GSM.Since bandwidth narrows, each section is accounted in AB
Symbol is elongated, then reaching identical coverage distance in M2M, when continuing to use the PRACH in gsm system, will lead to
The waste of GP resource.
Meanwhile M2M supports a variety of different bandwidths, therefore, a kind of novel PRACH format is needed, to meet narrow band communication
The requirement of system, and solve the problems, such as the GP wasting of resources.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of accidental access method and equipment, for solve presently, there are
The problem of GP wasting of resources.
According to the first aspect of the invention, a kind of accidental access method is provided, comprising:
For user terminal before initiating random access, measurement obtains the signal covering grade of base station；
The user terminal determines that measurement obtains according to the mapping relations between preset signal covering grade and bandwidth value
The corresponding bandwidth value of signal covering grade；
The user terminal determines the Physical Random Access Channel for meeting the bandwidth value according to the determining bandwidth value
PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, the corresponding PRACH format
In include protection interval GP occupy symbolic number it is fewer；
The user terminal sends random access request using the determining PRACH, the base station Xiang Suoshu.
In conjunction with the possible embodiment of first aspect present invention, in the first possible embodiment, user terminal is surveyed
Measure the signal covering grade to base station, comprising:
The reference information that user terminal sends base station measures, and the intensity of the reference information obtained according to measurement determines
The signal covering grade of the base station.
In conjunction with the possible embodiment of first aspect present invention, in second of possible embodiment, user terminal is surveyed
Measure the signal covering grade to base station, comprising:
The broadcast singal that user terminal sends base station carries out duplicate measurements, the broadcast singal that measurement is obtained just
Really when parsing, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
The user terminal is united according to the mapping relations between preset duplicate measurements number and signal covering grade
The corresponding signal covering grade of the number of meter obtains the signal covering grade of base station as measurement.
It is possible in conjunction with the possible embodiment of first aspect present invention, or the first of combination first aspect present invention
Embodiment, or second of possible embodiment of first aspect present invention is combined, in the third possible embodiment
In, the user terminal determines the Physical Random Access Channel for meeting the bandwidth value according to the determining bandwidth value
PRACH, comprising:
Mapping relations between running time-frequency resource of the user terminal according to preset bandwidth value and for carrying PRACH,
Obtain the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein a bandwidth value corresponds at least one
For carrying the running time-frequency resource of PRACH.
In conjunction with the third possible embodiment of first aspect present invention, in the 4th kind of possible embodiment, really
Surely meet the Physical Random Access Channel PRACH of the bandwidth value, comprising:
Of the user terminal in the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When number is at least two, select one of them available for carrying the running time-frequency resource of PRACH.
It is possible in conjunction with the possible embodiment of first aspect present invention, or the first of combination first aspect present invention
Embodiment perhaps combines second of possible embodiment of first aspect present invention or combines first aspect present invention
The third possible embodiment, or combine first aspect present invention the 4th kind of possible embodiment, at the 5th kind
In possible embodiment, the method also includes:
The user terminal is selected after being initiated random access using the determining PRACH, when determining random access failure
Select new bandwidth value, wherein it is corresponding that the new bandwidth value is less than PRACH used in the last transmission random access failure
Bandwidth value；
The user terminal determines the PRACH for meeting the new bandwidth according to the new bandwidth value, and utilizes determination
The PRACH for meeting the new bandwidth again to the base station send random access request.
According to the second aspect of the invention, a kind of random access equipment is provided, comprising:
Measurement module, for before initiating random access, measurement to obtain the signal covering grade of base station；
Determining module, for according to the mapping relations between preset signal covering grade and bandwidth value, determination to be measured
The corresponding bandwidth value of signal covering grade arrived；According to the determining bandwidth value, determine meet the physics of the bandwidth value with
Machine accesses channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, corresponding institute
It is fewer to state the symbolic number that the protection interval GP for including in PRACH format is occupied；
Random access module, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
In conjunction with the possible embodiment of second aspect of the present invention, in the first possible embodiment, the measurement mould
Block, specifically for being measured to the reference information that base station is sent, according to the intensity determination for measuring obtained reference information
The signal covering grade of base station.
In conjunction with the possible embodiment of second aspect of the present invention, in second of possible embodiment, the measurement mould
Block carries out duplicate measurements specifically for the broadcast singal sent to base station, correctly solves in the broadcast singal obtained to measurement
When analysis, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
The user terminal is united according to the mapping relations between preset duplicate measurements number and signal covering grade
The corresponding signal covering grade of the number of meter obtains the signal covering grade of base station as measurement.
It is possible in conjunction with the possible embodiment of second aspect of the present invention, or the first of combination second aspect of the present invention
Embodiment, or second of possible embodiment of second aspect of the present invention is combined, in the third possible embodiment
In, the determining module is closed specifically for the mapping between the running time-frequency resource according to preset bandwidth value and for carrying PRACH
System obtains the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein a bandwidth value is corresponding at least
One for carrying the running time-frequency resource of PRACH.
In conjunction with the third possible embodiment of second aspect of the present invention, in the 4th kind of possible embodiment, institute
It states determining module and determines the Physical Random Access Channel PRACH for meeting the bandwidth value, be specifically used for:
It is at least two in the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When, select one of them available for carrying the running time-frequency resource of PRACH.
It is possible in conjunction with the possible embodiment of second aspect of the present invention, or the first of combination second aspect of the present invention
Embodiment perhaps combines second of possible embodiment of second aspect of the present invention or combines second aspect of the present invention
The third possible embodiment, or combine second aspect of the present invention the 4th kind of possible embodiment, at the 5th kind
In possible embodiment, the random access equipment further include: selecting module, in which:
Selecting module, for after initiating random access using the determining PRACH, when determining random access failure,
Select new bandwidth value, wherein the new bandwidth value is less than used in the last transmission random access failure PRACH pairs
The bandwidth value answered；
The determining module, specifically for determining the PRACH for meeting the new bandwidth according to the new bandwidth value；
The random access module, specifically for using the determining PRACH for meeting the new bandwidth again to described
Base station sends random access request.
According to the third aspect of the invention we, a kind of random access equipment is provided, the random access equipment includes: signal
Receiver, processor and signal projector, in which:
Signal receiver, for before initiating random access, measurement to obtain the signal covering grade of base station；
Processor, for determining that measurement is obtained according to the mapping relations between preset signal covering grade and bandwidth value
The corresponding bandwidth value of signal covering grade；According to the determining bandwidth value, the physical accidental for meeting the bandwidth value is determined
Access channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, corresponding described
The symbolic number that the protection interval GP for including in PRACH format is occupied is fewer；
Signal projector, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
In conjunction with the possible embodiment of third aspect present invention, in the first possible embodiment, the signal hair
Emitter, specifically for measuring to the reference information that base station is sent, the intensity of the reference information obtained according to measurement determines institute
State the signal covering grade of base station.
In conjunction with the possible embodiment of third aspect present invention, in second of possible embodiment, the signal hair
Emitter carries out duplicate measurements specifically for the broadcast singal sent to base station, correct in the broadcast singal obtained to measurement
When parsing, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
According to the mapping relations between preset duplicate measurements number and signal covering grade, the number counted is corresponding
Signal covering grade as measurement obtain the signal covering grade of base station.
It is possible in conjunction with the possible embodiment of third aspect present invention, or the first of combination third aspect present invention
Embodiment, or second of possible embodiment of third aspect present invention is combined, in the third possible embodiment
In, the processor is closed specifically for the mapping between the running time-frequency resource according to preset bandwidth value and for carrying PRACH
System obtains the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein a bandwidth value is corresponding at least
One for carrying the running time-frequency resource of PRACH.
In conjunction with the third possible embodiment of third aspect present invention, in the 4th kind of possible embodiment, institute
It states processor and determines the Physical Random Access Channel PRACH for meeting the bandwidth value, be specifically used for:
It is at least two in the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When, select one of them available for carrying the running time-frequency resource of PRACH.
It is possible in conjunction with the possible embodiment of third aspect present invention, or the first of combination third aspect present invention
Embodiment perhaps combines second of possible embodiment of third aspect present invention or combines third aspect present invention
The third possible embodiment, or combine third aspect present invention the 4th kind of possible embodiment, at the 5th kind
In possible embodiment, the processor, be also used to after initiating random access using the determining PRACH, determine with
When machine access failure, new bandwidth value is selected, wherein the new bandwidth value is less than the last transmission random access failure institute
The corresponding bandwidth value of the PRACH used；According to the new bandwidth value, the PRACH for meeting the new bandwidth is determined；
The signal projector is also used to using the determining PRACH for meeting the new bandwidth again to the base station
Send random access request.
The utility model has the advantages that
For the embodiment of the present invention through user terminal before initiating random access, measurement obtains signal covering of base station etc.
Grade；The user terminal determines the letter that measurement obtains according to the mapping relations between preset signal covering grade and bandwidth value
Number corresponding bandwidth value of covering grade；The user terminal meets the bandwidth value according to the determining bandwidth value, determination
Physical Random Access Channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, right
The symbolic number that the protection interval GP for including in the PRACH format answered is occupied is fewer；The user terminal utilizes determining institute
PRACH is stated, the base station Xiang Suoshu sends random access request, and the embodiment of the present invention passes through user terminal when initiating random access,
Suitable bandwidth value is selected according to the signal covering grade of base station, initiates random access using the PRACH for meeting the bandwidth value, by
In in the scene that single carrier transmission has multiple signal covering grades again simultaneously, for different band width values, in PRACH subframe structure
GP occupy symbolic number accordingly reduce so that the resource for being used for transmission data increases, effectively improve random access efficiency.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is a kind of flow diagram for accidental access method that the embodiment of the present invention one provides；
Fig. 2 is a kind of structural schematic diagram of random access equipment provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of structural schematic diagram for random access equipment that the embodiment of the present invention three provides.
Specific embodiment
In order to achieve the object of the present invention, the embodiment of the invention provides a kind of accidental access method and equipment, user is whole
Before initiating random access, measurement obtains the signal covering grade of base station at end；The user terminal is covered according to preset signal
Mapping relations between lid grade and bandwidth value determine the corresponding bandwidth value of signal covering grade that measurement obtains；The user
Terminal determines the Physical Random Access Channel PRACH for meeting the bandwidth value according to the determining bandwidth value, wherein different
The PRACH of the corresponding different-format of bandwidth value, the bandwidth value is smaller, between the protection for including in the corresponding PRACH format
It is fewer every the symbolic number that GP is occupied；The user terminal sends random access and asks using the determining PRACH, the base station Xiang Suoshu
It asks, for the embodiment of the present invention through user terminal when initiating random access, it is suitable to be selected according to the signal covering grade of base station
Bandwidth value initiates random access using the PRACH for meeting the bandwidth value, due to having multiple signals to cover again simultaneously in single carrier transmission
In the scene of lid grade, for different band width values, the GP in PRACH subframe structure occupies symbolic number and accordingly reduces, so that being used for
The resource of transmission data increases, and effectively improves random access efficiency.
The each embodiment of the present invention is described in detail with reference to the accompanying drawings of the specification.Obviously, described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one:
As shown in Figure 1, a kind of flow diagram of the accidental access method provided for the embodiment of the present invention one.The method
It can be as described below.
Step 101: for user terminal before initiating random access, measurement obtains the signal covering grade of base station.
It should be noted that signal covering grade is that the base station signal coverage strength obtained by measurement is compared and base station signal
What the numerical value of the increase of coverage criteria intensity or reduction determined.
In a step 101, user terminal needs to carry out the signal covering grade of base station side before initiating random access
Measurement, according to the serving cell of measurement result selection access.
For supporting the user terminal of M2M to measure when initiating M2M business to the signal covering grade of base station.This
In the mode that measures include but is not limited to:
First way:
The reference information that user terminal sends base station measures, and the intensity of the reference information obtained according to measurement determines
The signal covering grade of the base station.
It should be noted that reference information here can be finger pilot signal, synchronizing sequence or base can also refer to
The energy etc. stood, is here not specifically limited reference information.
The second way:
The broadcast singal that user terminal sends base station carries out duplicate measurements, the broadcast singal that measurement is obtained just
Really when parsing, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
The user terminal is united according to the mapping relations between preset duplicate measurements number and signal covering grade
The corresponding signal covering grade of the number of meter obtains the signal covering grade of base station as measurement.
Since user terminal is before initiating random access, the broadcast singal for initiating to send base station is measured, still
It is influenced by extraneous factor, needs to carry out the broadcast singal of base station multiplicating measurement, and obtain to measurement in determination
The broadcast singal terminate measurement when correctly parsing, and count the broadcast singal that duplicate measurements is correctly parsed
Number.
It should be noted that correct parsing can refer to the acquisition base station side parameter from broadcast singal, such as synchronizing information
Deng, guarantee user terminal pass through the base station side parameter that parses realize it is synchronous with base station side etc..
Further, since base station repeats to dispose more bandwidth in existing GSM network to promote the utilization rate of frequency spectrum resource
Communication system, the bandwidth of these communication systems is much smaller than the bandwidth of GSM network system, and base station can be according to required for business
Frequency spectrum resource divides the bandwidth of GSM network system, obtains multiple and different bandwidth values, each bandwidth value can correspond to
One communication system.
Such as: 200KHz is divided into: 60KHz, 15KHz, 3.75KHz etc..
Each bandwidth value corresponds to a signal covering grade, and bandwidth value is smaller, and corresponding signal covering grade is bigger, letter
Number coverage area is wider.
As shown in table 1, the mapping table between signal covering grade and bandwidth value:
| Bandwidth | 3.75KHz | 15KHz | 60KHz |
| Signal covering grade | 20dB | 15dB | 10dB |
Table 1
It should be noted that documented signal covering grade 20dB in table 1, illustrates in the communication that bandwidth is 3.75KHz
In network, the signal coverage strength of base station is 20KHz higher than signal coverage criteria intensity.
Mapping relations between the signal covering grade that base station determines and bandwidth value can be stored in advance in subscriber terminal side.
Step 102: the user terminal is determined according to the mapping relations between preset signal covering grade and bandwidth value
Measure the obtained corresponding bandwidth value of signal covering grade.
In a step 102, for the user terminal after the signal covering grade to base station measures, utilization is preset
Mapping relations between signal covering grade and bandwidth value determine the corresponding bandwidth value of signal covering grade that measurement obtains.
Wherein, the mapping relations between preset signal covering grade and bandwidth value can be builds in advance according to experimental data
Stand and to be stored in user terminal local, can also be that user terminal passes through what study obtained in actual measurement, here for
The mode of establishing of mapping relations is not specifically limited.
Step 103: the user terminal determines the physical accidental for meeting the bandwidth value according to the determining bandwidth value
Access channel PRACH.
Wherein, the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, the corresponding PRACH lattice
The symbolic number that the protection interval GP for including in formula is occupied is fewer.
In step 103, between running time-frequency resource of the user terminal according to preset bandwidth value and for carrying PRACH
Mapping relations, obtain meeting the determining bandwidth value for carrying the running time-frequency resource of PRACH, wherein a bandwidth value
Correspond at least one running time-frequency resource for being used to carry PRACH.
Of the user terminal in the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When number is at least two, select one of them available for carrying the running time-frequency resource of PRACH.
Wherein, the mapping relations between preset bandwidth value and running time-frequency resource for carrying PRACH can be by following
Mode determines:
The running time-frequency resource of configuration is divided into different time/frequency source blocks according to signal covering grade by base station, and a kind of signal covers
Lid grade can correspond to multiple time/frequency source blocks.Each time/frequency source block corresponds to a kind of PRACH format.
It should be noted that the time span due to each corresponding symbol of different bandwidth is different, then according to bandwidth
Value, determines that PRACH format is also different.
Wherein, the PRACH of the corresponding different-format of different bandwidth, the bandwidth value is smaller, the corresponding PRACH format
In include protection interval GP occupy symbolic number it is fewer, in this way can by GP save symbolic number distribute to pilot frequency sequence or
Data sequence promotes volume of transmitted data.
According between signal covering grade and bandwidth value mapping relations and signal covering grade and time/frequency source block it
Between corresponding relationship, determine the mapping relations between bandwidth value, signal covering grade and time/frequency source block.
As shown in table 2, the mapping relations schematic table between bandwidth value, signal covering grade and time/frequency source block:
Table 2
From Table 2, it can be seen that the PRACH of different-format is carried in the corresponding time/frequency source block of different bandwidth, covering etc.
Grade is higher, and the bandwidth value is smaller, and the protection interval GP for including in the PRACH format carried in corresponding time/frequency source block is occupied
Symbolic number it is fewer.
Mapping relations between bandwidth value and time/frequency source block can be stored in advance in user terminal local.
Optionally, user terminal determines that the physical accidental for meeting the bandwidth value connects after the determining bandwidth value
Enter the mode of channel PRACH further include:
The determining bandwidth value is sent to base station by user terminal, and base station is in the band for receiving user terminal transmission
After width values, according to the mapping relations between bandwidth value and time/frequency source block, the time/frequency source block for meeting the bandwidth value is determined,
And determining time/frequency source block is sent to user terminal.
It should be noted that if base station determine the time/frequency source block for meeting the bandwidth be it is multiple when, selection wherein not by
The time/frequency source block being not used by is sent to the user terminal by the time/frequency source block used.
Further, base station, can be according to the running time-frequency resource being not used by the time/frequency source block that selection is not used by
The small time/frequency source block being not used by is numbered in the number of block, preferential selection.
Step 104: the user terminal sends random access request using the determining PRACH, the base station Xiang Suoshu.
At step 104, the method also includes:
The user terminal is selected after being initiated random access using the determining PRACH, when determining random access failure
Select new bandwidth value, wherein it is corresponding that the new bandwidth value is less than PRACH used in the last transmission random access failure
Bandwidth value.
The user terminal determines the PRACH for meeting the new bandwidth according to the new bandwidth value, and utilizes determination
The PRAC for meeting the new bandwidth again to the base station send random access request.
Optionally, if when the unmeasured signal covering grade for obtaining base station of user terminal, the method also includes:
User terminal selecting maximum bandwidth value sends random access request.
Further, if user terminal sends random access request failure using the maximum bandwidth value of selection, adaptively
Select the bandwidth smaller than maximum bandwidth to initiate random access request again, if still failing, select again smaller bandwidth initiate with
Machine access request successively carries out.
One scheme through the embodiment of the present invention, for user terminal before initiating random access, measurement obtains the letter of base station
Number covering grade；The user terminal determines measurement according to the mapping relations between preset signal covering grade and bandwidth value
The obtained corresponding bandwidth value of signal covering grade；The user terminal determines described in meeting according to the determining bandwidth value
The Physical Random Access Channel PRACH of bandwidth value, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value
Smaller, the symbolic number that the protection interval GP for including in the corresponding PRACH format is occupied is fewer；The user terminal is using really
The fixed PRACH, the base station Xiang Suoshu send random access request, and the embodiment of the present invention is being initiated to connect at random by user terminal
It is fashionable, suitable bandwidth value is selected according to the signal covering grade of base station, initiates to connect at random using the PRACH for meeting the bandwidth value
Enter, due to single carrier transmission simultaneously again have multiple signal covering grades scene in, for different band width values, PRACH subframe
GP in structure occupies symbolic number and accordingly reduces, so that the resource for being used for transmission data increases, effectively improves random access effect
Rate.
Embodiment two:
As shown in Fig. 2, be a kind of structural schematic diagram of random access equipment provided by Embodiment 2 of the present invention, it is described random
Access device includes: measurement module 21, determining module 22 and random access module 23, in which:
Measurement module 21, for before initiating random access, measurement to obtain the signal covering grade of base station；
Determining module 22, for determining measurement according to the mapping relations between preset signal covering grade and bandwidth value
The obtained corresponding bandwidth value of signal covering grade；According to the determining bandwidth value, the physics for meeting the bandwidth value is determined
Random access channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, corresponding
The symbolic number that the protection interval GP for including in the PRACH format is occupied is fewer；
Random access module 23, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
Specifically, the measurement module 21, specifically for being measured to the reference information that base station is sent, according to measuring
To the intensity of reference information determine the signal covering grade of the base station.
Specifically, the measurement module 21 carries out duplicate measurements specifically for the broadcast singal sent to base station, to survey
When the broadcast singal measured correctly parses, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
The user terminal is united according to the mapping relations between preset duplicate measurements number and signal covering grade
The corresponding signal covering grade of the number of meter obtains the signal covering grade of base station as measurement.
Specifically, the determining module 22, specifically for being provided according to preset bandwidth value and the time-frequency for carrying PRACH
Mapping relations between source obtain the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein one
Bandwidth value corresponds at least one for carrying the running time-frequency resource of PRACH.
Specifically, the determining module 22 determines the Physical Random Access Channel PRACH for meeting the bandwidth value, specific to use
In:
It is at least two in the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When, select one of them available for carrying the running time-frequency resource of PRACH.
Optionally, the random access equipment further include: selecting module 24, in which:
Selecting module 24, for after initiating random access using the determining PRACH, determine random access failure
When, select new bandwidth value, wherein the new bandwidth value is less than the last send used in random access failure
The corresponding bandwidth value of PRACH；
The determining module 22, specifically for according to the new bandwidth value, determination meets the new bandwidth
PRACH；
The random access module 23, specifically for using the determining PRACH for meeting the new bandwidth again to institute
It states base station and sends random access request.
It should be noted that random access equipment described in the embodiment of the present invention can be integrated in inside user terminal
Logical block is also possible to be the independent network equipment with user equipment, can be realized by hardware or software mode, here
Without limitation.
Embodiment three:
As shown in figure 3, a kind of structural schematic diagram of the random access equipment provided for the embodiment of the present invention three, described random
Access device includes: signal receiver 31, processor 32 and signal projector 33, in which:
Signal receiver 31, for before initiating random access, measurement to obtain the signal covering grade of base station；
Processor 32, for according to the mapping relations between preset signal covering grade and bandwidth value, determination to be measured
The corresponding bandwidth value of signal covering grade arrived；According to the determining bandwidth value, determine meet the physics of the bandwidth value with
Machine accesses channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, corresponding institute
It is fewer to state the symbolic number that the protection interval GP for including in PRACH format is occupied；
Signal projector 33, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
Specifically, the signal projector 33, specifically for being measured to the reference information that base station is sent, according to measurement
The intensity of obtained reference information determines the signal covering grade of the base station.
Specifically, the signal projector 33 carries out duplicate measurements specifically for the broadcast singal sent to base station, right
When the broadcast singal that measurement obtains correctly parses, time for the broadcast singal that statistics duplicate measurements is correctly parsed
Number；
According to the mapping relations between preset duplicate measurements number and signal covering grade, the number counted is corresponding
Signal covering grade as measurement obtain the signal covering grade of base station.
Specifically, the processor 32, specifically for according to preset bandwidth value and the running time-frequency resource for carrying PRACH
Between mapping relations, obtain meeting the determining bandwidth value for carrying the running time-frequency resource of PRACH, wherein a band
Width values correspond at least one for carrying the running time-frequency resource of PRACH.
Specifically, the processor 32 determines the Physical Random Access Channel PRACH for meeting the bandwidth value, specific to use
In:
It is at least two in the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When, select one of them available for carrying the running time-frequency resource of PRACH.
Specifically, the processor 32, be also used to after initiating random access using the determining PRACH, determine with
When machine access failure, new bandwidth value is selected, wherein the new bandwidth value is less than the last transmission random access failure institute
The corresponding bandwidth value of the PRACH used；According to the new bandwidth value, the PRACH for meeting the new bandwidth is determined；
The signal projector 33 is also used to using the determining PRACH for meeting the new bandwidth again to the base
It stands and sends random access request.
Wherein, processor 32 can be a general central processor (CPU), microprocessor, application-specific integrated circuit
(application-specific integrated circuit, ASIC), or it is one or more for controlling the present invention program
The integrated circuit that program executes.
It will be understood by those skilled in the art that the embodiment of the present invention can provide as method, apparatus (equipment) or computer
Program product.Therefore, in terms of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, it wherein includes the meter of computer usable program code that the present invention, which can be used in one or more,
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The present invention be referring to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (21)
1. a kind of accidental access method characterized by comprising
For user terminal before initiating random access, measurement obtains the signal covering grade of base station；
The user terminal determines the letter that measurement obtains according to the mapping relations between preset signal covering grade and bandwidth value
Number corresponding bandwidth value of covering grade；
The user terminal determines the Physical Random Access Channel for meeting the bandwidth value according to the determining bandwidth value
PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, the corresponding PRACH format
In include protection interval GP occupy symbolic number it is fewer；
The user terminal sends random access request using the determining PRACH, the base station Xiang Suoshu.
2. accidental access method as described in claim 1, which is characterized in that user terminal measurement obtains the signal covering of base station
Grade, comprising:
The reference information that user terminal sends base station measures, according to the intensity determination for measuring obtained reference information
The signal covering grade of base station.
3. accidental access method as described in claim 1, which is characterized in that user terminal measurement obtains the signal covering of base station
Grade, comprising:
User terminal carries out duplicate measurements to the broadcast singal that base station is sent, and correctly solves in the broadcast singal obtained to measurement
When analysis, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
The user terminal is counted according to the mapping relations between preset duplicate measurements number and signal covering grade
The corresponding signal covering grade of number obtains the signal covering grade of base station as measurement.
4. the accidental access method as described in claims 1 to 3 is any, which is characterized in that the user terminal is according to determining
The bandwidth value determines the Physical Random Access Channel PRACH for meeting the bandwidth value, comprising:
Mapping relations between running time-frequency resource of the user terminal according to preset bandwidth value and for carrying PRACH, obtain
Meet the running time-frequency resource for being used to carry PRACH of the determining bandwidth value, wherein a bandwidth value corresponds at least one and is used for
Carry the running time-frequency resource of PRACH.
5. accidental access method as claimed in claim 4, which is characterized in that determine that the physical accidental for meeting the bandwidth value connects
Enter channel PRACH, comprising:
The user terminal is in the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction
When at least two, select one of them available for carrying the running time-frequency resource of PRACH.
6. the accidental access method as described in claims 1 to 3 is any, which is characterized in that the method also includes:
For the user terminal after initiating random access using the determining PRACH, when determining random access failure, selection is new
Bandwidth value, wherein the new bandwidth value, which is less than, the last sends the corresponding band of PRACH used in random access failure
Width values；
The user terminal determines the PRACH for meeting the new bandwidth according to the new bandwidth value, and is expired using determining
The PRACH of the foot new bandwidth sends random access request to the base station again.
7. accidental access method as claimed in claim 4, which is characterized in that the method also includes:
For the user terminal after initiating random access using the determining PRACH, when determining random access failure, selection is new
Bandwidth value, wherein the new bandwidth value, which is less than, the last sends the corresponding band of PRACH used in random access failure
Width values；
The user terminal determines the PRACH for meeting the new bandwidth according to the new bandwidth value, and is expired using determining
The PRACH of the foot new bandwidth sends random access request to the base station again.
8. a kind of random access equipment characterized by comprising
Measurement module, for before initiating random access, measurement to obtain the signal covering grade of base station；
Determining module, for determining what measurement obtained according to the mapping relations between preset signal covering grade and bandwidth value
The corresponding bandwidth value of signal covering grade；According to the determining bandwidth value, determine that the physical accidental for meeting the bandwidth value connects
Enter channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, corresponding described
The symbolic number that the protection interval GP for including in PRACH format is occupied is fewer；
Random access module, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
9. random access equipment as claimed in claim 8, which is characterized in that
The measurement module, specifically for being measured to the reference information that base station is sent, according to the obtained reference information of measurement
Intensity determine the signal covering grade of the base station.
10. random access equipment as claimed in claim 8, which is characterized in that
The measurement module carries out duplicate measurements specifically for the broadcast singal sent to base station, described in obtaining to measurement
When broadcast singal correctly parses, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
User terminal is according to the mapping relations between preset duplicate measurements number and signal covering grade, the number counted
Corresponding signal covering grade obtains the signal covering grade of base station as measurement.
11. the random access equipment as described in claim 8 to 10 is any, which is characterized in that
The determining module, specifically for the mapping between the running time-frequency resource according to preset bandwidth value and for carrying PRACH
Relationship obtains the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein a bandwidth value is corresponding extremely
Few one for carrying the running time-frequency resource of PRACH.
12. random access equipment as claimed in claim 11, which is characterized in that the determining module determination meets the bandwidth
The Physical Random Access Channel PRACH of value, is specifically used for:
When the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction is at least two,
Select one of them available for carrying the running time-frequency resource of PRACH.
13. the random access equipment as described in claim 8 to 10 is any, which is characterized in that the random access equipment is also wrapped
It includes: selecting module, in which:
Selecting module, for selecting after initiating random access using the determining PRACH, when determining random access failure
New bandwidth value, wherein it is corresponding that the new bandwidth value is less than PRACH used in the last transmission random access failure
Bandwidth value；
The determining module, specifically for determining the PRACH for meeting the new bandwidth according to the new bandwidth value；
The random access module, specifically for using the determining PRACH for meeting the new bandwidth again to the base station
Send random access request.
14. random access equipment as claimed in claim 11, which is characterized in that the random access equipment further include: selection
Module, in which:
Selecting module, for selecting after initiating random access using the determining PRACH, when determining random access failure
New bandwidth value, wherein it is corresponding that the new bandwidth value is less than PRACH used in the last transmission random access failure
Bandwidth value；
The determining module, specifically for determining the PRACH for meeting the new bandwidth according to the new bandwidth value；
The random access module, specifically for using the determining PRACH for meeting the new bandwidth again to the base station
Send random access request.
15. a kind of random access equipment, which is characterized in that the random access equipment includes: signal receiver, processor and letter
Number transmitter, in which:
Signal receiver, for before initiating random access, measurement to obtain the signal covering grade of base station；
Processor, for determining the letter that measurement obtains according to the mapping relations between preset signal covering grade and bandwidth value
Number corresponding bandwidth value of covering grade；According to the determining bandwidth value, the physical accidental access for meeting the bandwidth value is determined
Channel PRACH, wherein the PRACH of the corresponding different-format of different band width values, the bandwidth value is smaller, the corresponding PRACH
The symbolic number that the protection interval GP for including in format is occupied is fewer；
Signal projector, for using the determining PRACH, the base station Xiang Suoshu to send random access request.
16. random access equipment as claimed in claim 15, which is characterized in that
The signal projector is believed specifically for measuring to the reference information that base station is sent according to the reference that measurement obtains
The intensity of breath determines the signal covering grade of the base station.
17. random access equipment as claimed in claim 15, which is characterized in that
The signal projector carries out duplicate measurements specifically for the broadcast singal sent to base station, in the institute obtained to measurement
When stating broadcast singal and correctly parsing, the number for the broadcast singal that statistics duplicate measurements is correctly parsed；
According to the mapping relations between preset duplicate measurements number and signal covering grade, the corresponding letter of the number counted
Number covering grade obtains the signal covering grade of base station as measurement.
18. the random access equipment as described in claim 15 to 17 is any, which is characterized in that
The processor is closed specifically for the mapping between the running time-frequency resource according to preset bandwidth value and for carrying PRACH
System obtains the running time-frequency resource for being used to carry PRACH for meeting the determining bandwidth value, wherein a bandwidth value is corresponding at least
One for carrying the running time-frequency resource of PRACH.
19. random access equipment as claimed in claim 18, which is characterized in that the processor determination meets the bandwidth value
Physical Random Access Channel PRACH, be specifically used for:
When the number of the running time-frequency resource for carrying PRACH of the determining bandwidth value of obtained satisfaction is at least two,
Select one of them available for carrying the running time-frequency resource of PRACH.
20. the random access equipment as described in claim 15 to 17 is any, which is characterized in that
The processor is also used to after being initiated random access using the determining PRACH, when determining random access failure,
Select new bandwidth value, wherein the new bandwidth value is less than used in the last transmission random access failure PRACH pairs
The bandwidth value answered；According to the new bandwidth value, the PRACH for meeting the new bandwidth is determined；
The signal projector is also used to send to the base station again using the determining PRACH for meeting the new bandwidth
Random access request.
21. random access equipment as claimed in claim 18, which is characterized in that
The processor is also used to after being initiated random access using the determining PRACH, when determining random access failure,
Select new bandwidth value, wherein the new bandwidth value is less than used in the last transmission random access failure PRACH pairs
The bandwidth value answered；According to the new bandwidth value, the PRACH for meeting the new bandwidth is determined；
The signal projector is also used to send to the base station again using the determining PRACH for meeting the new bandwidth
Random access request.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/090113 WO2016065640A1 (en) | 2014-10-31 | 2014-10-31 | Random access method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105900515A CN105900515A (en) | 2016-08-24 |
| CN105900515B true CN105900515B (en) | 2019-05-07 |
Family
ID=55856451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480035538.4A Active CN105900515B (en) | 2014-10-31 | 2014-10-31 | A kind of accidental access method and equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105900515B (en) |
| WO (1) | WO2016065640A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811160A (en) * | 2017-04-27 | 2018-11-13 | 普天信息技术有限公司 | A kind of the accidental access signal sending method and device of multi-sub-band system |
| CN108934023B (en) * | 2017-05-26 | 2022-03-11 | 中兴通讯股份有限公司 | Coverage grade determination, base station and terminal |
| BR112022019975A2 (en) * | 2020-04-10 | 2022-11-22 | Qualcomm Inc | RANDOM ACCESS BANDWIDTH-BASED COMMUNICATION CONFIGURATION |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087469A (en) * | 2006-06-09 | 2007-12-12 | 大唐移动通信设备有限公司 | A method for realizing random access of user device |
| CN103260250A (en) * | 2012-02-15 | 2013-08-21 | 华为技术有限公司 | Random access method, base station and user equipment |
| CN103906260A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Random access preamble processing method and random access preamble processing device |
| CN103916867A (en) * | 2012-12-31 | 2014-07-09 | 中国移动通信集团设计院有限公司 | Method and apparatus for determining capacity of control channel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220811B (en) * | 2012-01-19 | 2018-04-27 | 中兴通讯股份有限公司 | The method of information processing method, MTC UE random access LTE systems |
| CN103298136B (en) * | 2012-02-29 | 2016-11-23 | 华为技术有限公司 | A kind of accidental access method, terminal, base station and system |
-
2014
- 2014-10-31 CN CN201480035538.4A patent/CN105900515B/en active Active
- 2014-10-31 WO PCT/CN2014/090113 patent/WO2016065640A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087469A (en) * | 2006-06-09 | 2007-12-12 | 大唐移动通信设备有限公司 | A method for realizing random access of user device |
| CN103260250A (en) * | 2012-02-15 | 2013-08-21 | 华为技术有限公司 | Random access method, base station and user equipment |
| CN103906260A (en) * | 2012-12-28 | 2014-07-02 | 中兴通讯股份有限公司 | Random access preamble processing method and random access preamble processing device |
| CN103916867A (en) * | 2012-12-31 | 2014-07-09 | 中国移动通信集团设计院有限公司 | Method and apparatus for determining capacity of control channel |
Non-Patent Citations (1)
| Title |
|---|
| R1-134054 Discussion on PRACH coverage improvement and mechanism for determining the amount of needed coverage improvement;Huawei等;《3GPP TSG RAN WG1 Meeting #74bis》;20131011;全文 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105900515A (en) | 2016-08-24 |
| WO2016065640A1 (en) | 2016-05-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105191356B (en) | Paging method and device | |
| CN103974445A (en) | Random access channel transmission method and device | |
| CN105634666B (en) | A kind of data transmission method and device in unauthorized frequency range | |
| CN105451251B (en) | A kind of DRS configuration method, measurement method and the relevant device of unlicensed spectrum | |
| CN110380838A (en) | Bandwidth allocation methods, device, user equipment and base station | |
| CN105813202B (en) | A kind of channel width configuration method and device | |
| CN107733497A (en) | Method, terminal device and the network side equipment of tracking beam | |
| CN106922018B (en) | Positioning method and device | |
| CN105900515B (en) | A kind of accidental access method and equipment | |
| CN105794292B (en) | Data transmission method for uplink, resource measurement method, apparatus and equipment | |
| CN110234164A (en) | A kind of determining control channel location method equipment and processor readable storage medium | |
| CN108668362A (en) | A kind of indicating means and device of random access physical resource | |
| CN113099486B (en) | Multilink communication method, device and system | |
| CN107453851A (en) | A kind of CQI measuring methods, device and wireless communication system | |
| CN104883707A (en) | Wireless AP anti-interference capability testing system and testing method | |
| CN104023346A (en) | Energy efficiency measuring method and resource dispatching method for access user of mobile communication base station | |
| CN105515743B (en) | A kind of transfer control method of pilot signal, system and relevant device | |
| CN104509133B (en) | Device-to-device closes in service method, base station and the user equipment for transmitting signal | |
| CN106465356A (en) | Method and apparatus for allocating time-frequency resource | |
| CN105850209B (en) | A kind of cut-in method and equipment | |
| CN105991179A (en) | Method and device for transmitting channel state information | |
| CN110461038A (en) | A kind of method and apparatus of resource allocation | |
| CN104717697A (en) | Component carrier selection method and device in carrier aggregation | |
| Dash et al. | m-MTC for Optimized Communication in 5G | |
| CN107105513B (en) | Detection signal detection method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |