CN108804027A - The compression and storage method of single-bit localization time slot allocation table - Google Patents
The compression and storage method of single-bit localization time slot allocation table Download PDFInfo
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- CN108804027A CN108804027A CN201810317378.2A CN201810317378A CN108804027A CN 108804027 A CN108804027 A CN 108804027A CN 201810317378 A CN201810317378 A CN 201810317378A CN 108804027 A CN108804027 A CN 108804027A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
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Abstract
Disclose a kind of method for the single-bit localization time slot allocation table that compression storage is indicated with Bit String.Single-bit localization time slot allocation table includes several code unit, wherein a code unit is all bits before from the bit with the first bit value to next bit with the first bit value.Compression and storage method includes that single-bit localization time slot allocation table is divided into several sections of continuous datas so that being differed with the code unit in a kind of code unit and adjacent two segment data in per segment data；And it will be indicated per segment data initial value, number of repetition value and step value, wherein, initial value characterizes digit of first bit in single-bit localization time slot allocation table in the segment data, number of repetition value characterizes the number of repetition of the code unit in the segment data, and step value characterizes the number of bits with the second bit value in the code unit of the segment data.Using the compression and storage method of the present invention, the memory space of data can be saved.
Description
Technical field
This disclosure relates to wireless communication field, more specifically, this disclosure relates to data store.
Background technology
Short distance, high precision wireless indoor positioning technologies are widely used in urban compact region and indoor enclosure space
It is general.Positioning signal is mainly emitted using positioning label in existing positioning system, the mode that locating base station receives positioning signal is come
Realize positioning.Each locating periodically is divided into several localization time slots by positioning system, and positioning system is each positioning label point
With localization time slot, localization time slot of the positioning label where oneself emits positioning signal, meanwhile, locating base station is also by receiving
Localization time slot residing for positioning signal determines the positioning signal from which positioning label, to determine the positioning label
Position.By distributing localization time slot to positioning label, and only there are one positioning marks in each localization time slot in same bit space undetermined
It signs and issues and penetrates positioning signal, positioning signal is not necessarily to carry its information from which positioning label, and locating base station only need to be according to reception
Time can determine whether which positioning label it belongs to.Positioning label knows oneself institute by way of storing localization time slot allocation table
The localization time slot of category.Existing positioning label stores localization time slot allocation table, such as one by a string of continuous bit values
The localization time slot allocation table for positioning label storage is " 010010 ", indicates the positioning label on the 2nd and the 5th localization time slot
Emit positioning signal.But when need position positioning label number it is numerous, or positioning label positioning refresh rate it is higher when, one
More localization time slot will be had in a locating periodically, therefore the length of localization time slot allocation table will be longer, positioning label will
Larger memory space can be spent to store localization time slot allocation table.For example, fixed for the low frequency that pulse transmission frequency is 1200Hz
The memory length of position label, localization time slot allocation table is 1200 bits, i.e. 150 bytes；It is 3000Hz for pulse transmission frequency
Low frequency position label, the memory length of localization time slot allocation table is 3000 bits, i.e. 375 bytes；And frequency is sent for pulse
The high frequency that rate is 8000Hz positions label, and the memory length of localization time slot allocation table is 8000 bits, i.e. 1000 bytes.For existing
For some conventional positioning label microcontrollers, MCU internal data stores area is 1024 bytes.Therefore, when the arteries and veins of positioning label
When rushing transmission frequency and being more than 8000Hz, data storage area has been difficult to store localization time slot allocation table, thus, existing utilization
Consecutive bit values are no longer applicable in come the method for storing localization time slot allocation table.
In many application scenarios, in order to reduce the cost of positioning label so that the limited storage space for positioning label, when
When localization time slot allocation table is longer, positioning label can not store it.Therefore, positioning mark of the research in limited storage space
How localization time slot allocation table become this field researcher urgent need to resolve the problem of is stored in label.
Invention content
A kind of one side according to the present invention, it is proposed that pressure of the single-bit localization time slot allocation table indicated with Bit String
Contracting storage method, wherein each bit has the first bit value or the second bit value, and wherein, single-bit localization time slot point
Include several code unit with table, wherein a code unit is from the bit with the first bit value to next tool
There are all bits before the bit of the first bit value, compression and storage method to include：By single-bit localization time slot allocation table
N sections of continuous datas are divided into so that in per segment data not with the code unit in a kind of code unit and adjacent two segment data
It is identical；By per segment data initial value, number of repetition value and step value indicate, wherein initial value characterizes in the segment data the
Digit of one bit in single-bit localization time slot allocation table, number of repetition value characterize the code unit in the segment data
Number of repetition, step value characterize the number of bits with the second bit value in the code unit of the segment data.
The invention has the advantages that the localization time slot gauge pressure that will be stored in the way of single-bit in the way of fragmented storage
Contracting, memory space is substantially reduced in the case where data are larger, has saved the hardware cost of positioning system.
Description of the drawings
Fig. 1 provides the storage signal of the localization time slot allocation table in a kind of positioning label MS of embodiment according to the present invention
Figure；
Fig. 2 provides the flow of the analytic method 200 of the localization time slot allocation table in the positioning label MS of embodiment illustrated in fig. 1
Figure.
Specific implementation mode
Specific embodiments of the present invention are described more fully below, it should be noted that the embodiments described herein is served only for illustrating
Illustrate, is not intended to restrict the invention.In the following description, in order to provide a thorough understanding of the present invention, a large amount of spies are elaborated
Determine details.It will be apparent, however, to one skilled in the art that：This hair need not be carried out using these specific details
It is bright.In other instances, in order to avoid obscuring the present invention, well known circuit, material or method are not specifically described.
Throughout the specification, meaning is referred to " one embodiment ", " embodiment ", " example " or " example "
It：A particular feature, structure, or characteristic described in conjunction with this embodiment or example is comprised at least one embodiment of the present invention.
Therefore, the phrase " in one embodiment ", " in embodiment ", " example " occurred in each place of the whole instruction
Or " example " is not necessarily all referring to the same embodiment or example.Furthermore, it is possible to it is any it is appropriate combination and or sub-portfolio will be specific
Feature, structure or characteristic combine in one or more embodiments or example.In addition, those of ordinary skill in the art should manage
Solution, diagram is provided to the purpose of explanation provided herein, and diagram is not necessarily drawn to scale.It should be appreciated that working as
Claim " element " " being connected to " or when " coupled " to another element, it can be directly connected or coupled to another element or can be with
There are intermediary elements.On the contrary, when claiming element " being directly connected to " or " being directly coupled to " another element, cental element is not present
Part.Identical reference numeral indicates identical element.Term "and/or" used herein includes that one or more correlations are listed
Any and all combinations of project.
The storage that Fig. 1 provides a kind of localization time slot allocation table in a kind of positioning label MS of embodiment according to the present invention is shown
It is intended to.The localization time slot that localization time slot allocation table storage method as shown in Figure 1 stores a script using single-bit mode
Allocation table is divided into several sections, carries out compression storage.Localization time slot allocation table stores the localization time slot in a locating periodically point
With situation, in single-bit storage mode, each bit has the first bit value or the second bit value, the storage of a bit
Value represents whether a localization time slot belongs to as prelocalization label MS, wherein it is corresponding fixed that the first bit value represents the storage value
Digit time slot belongs to when prelocalization label MS, positioning label emit positioning signal in the localization time slot, and the second bit value represents should
The corresponding localization time slot of storage value is not belonging to work as prelocalization label MS, and positioning label does not emit positioning letter in the localization time slot
Number.In one embodiment, the first bit value is " 1 ", represents the corresponding localization time slot of the storage value and belongs to when prelocalization label
MS, positioning label emit positioning signal in the localization time slot；Second bit value is " 0 ", represents the corresponding positioning of the storage value
Time slot is not belonging to work as prelocalization label MS, and positioning label does not emit positioning signal in the localization time slot.Certainly, art technology
Personnel should be appreciated that in another embodiment, can also the first bit value be " 0 ", represent the corresponding localization time slot of the storage value
It is not belonging to work as prelocalization label MS, positioning label does not emit positioning signal in the localization time slot, and the second bit value represents for " 0 "
The corresponding localization time slot of the storage value belongs to as prelocalization label MS, and positioning label emits positioning signal in the localization time slot.
In localization time slot allocation table storage method shown in Fig. 1, single-bit localization time slot allocation table is divided into N sections even
Continuous data in per segment data with the code unit in a kind of code unit and adjacent two segment data so that differ；And it will
It is indicated per segment data initial value, number of repetition value and step value, wherein initial value characterizes first bit in the segment data
Digit of the position in single-bit localization time slot allocation table, number of repetition value characterize the repetition time of the code unit in the segment data
Number, step value characterize the number of bits with the second bit value in the code unit of the segment data.
In order to illustrate more clearly of above-mentioned localization time slot allocation table storage method, a localization time slot allocation table is given below
Data under single-bit memory module：For " 00100001000010010010010001 ", above-mentioned data include code
Unit 10000,100,1000 and 1, according to the code for making to have in a kind of code unit and adjacent two segment data in every segment data
Unit differs, and above-mentioned data can be divided into 4 sections of continuous datas, respectively：1000010000,100100100,1000 and
1.Above-mentioned 4 segment data initial value, number of repetition value and step value are indicated, first is characterized in the segment data according to initial value
Digit of the bit in single-bit localization time slot allocation table, number of repetition value characterize the repetition of the code unit in the segment data
Number, step value characterize the number of bits with the second bit value in the code unit of the segment data, in this embodiment, first
Bit value takes 1 and the second bit value takes 0, then obtains following storage result [4] [3 4 2] [13 2 3] [22 3 1] [26 0
1].What is stored in wherein first bracket [] is hop count, and what is stored in each bracket [] thereafter is the number of a section
According to respectively initial value a, number of steps s and number of repetition t.I-th section of initial value ai=a (i-1)+(s (i-1)+1) × t (i-
1), wherein a (i-1) indicates that (i-1)-th section of initial value, s (i-1) indicate that (i-1)-th section of number of steps, t (i-1) indicate (i-1)-th section
Number of repetition, and wherein, i is the integer more than 1.For paragraph 1, initial value is to go out for the first time in a locating periodically
The position of present worth " 1 ".For example, in the above example, the position of first time occurrence " 1 " is under the single bit data memory module
The 3rd bit, therefore, the initial value of paragraph 1 is 3.
In the above-described embodiments, the total hop count N of data for storing localization time slot allocation table in positioning label MS first, indicates
N segment datas are stored in next data space.Next the N segment datas of storage localization time slot allocation table, wherein
Include three parts, respectively initial value, number of steps and number of repetition per segment data.For i-th section, initial value ai indicates the
The storage of i segment datas be the ai position since localization time slot allocation table under single-bit memory module data, and institute
The value for stating the ai position is " 1 ", that is, positions label MS and need to emit positioning signal in the ai localization time slot.Number of steps si tables
Show the bit for having si storage value after the ai position of the localization time slot allocation table under single-bit memory module for " 0 ", i.e.,
Positioning label MS need not emit positioning signal in ai+1 to the ai+si localization time slot.Number of repetition ti indicates positioning
Schedule under single-bit memory module ai to the ai+si position value in followed localization time slot allocation table
Number of repetition in data.In one embodiment, according to the length of a locating periodically, hop count, initial value, stepping can be determined
The storage size of number and/or number of repetition, for example, in one embodiment, hop count, initial value, number of steps and/or repetition
Number occupies two bytes.
In one embodiment, hop count n=1, localization time slot allocation table are uniformly distributed in whole length.
Using above-mentioned storage method, the localization time slot allocation table that original single-bit mode stores is compressed, when
When the data volume of localization time slot allocation table is larger, memory space can be effectively reduced, it in other words, can be in limited memory space
It is upper to indicate more slot table information.For example, label is positioned for the high frequency that pulse transmission frequency is 8000Hz, in traditional company
In continuous bit value storage mode, the memory length of localization time slot allocation table is 1000 bytes, and utilizes the localization time slot of the present invention
Allocation table storage method at least just can store localization time slot allocation table with 6 bytes.
Fig. 2 provides the flow of the analytic method 200 of the localization time slot allocation table in the positioning label MS of embodiment illustrated in fig. 1
Figure.The analytic method 200 of localization time slot allocation table in positioning label MS includes the following steps：
Step 201：Compared with every section of initial value in localization time slot allocation table, find makes current localization time slot number x
The hop count value i of ai≤x≤a (i+1)；
Step 202：Calculate that current localization time slot number x is subtracted after i-th section of initial value ai divided by i-th section of number of steps si adds 1
Result u=(x-ai) % (si+1) that value takes the remainder；
Step 203：Whether the value for the remainder u being calculated in judgment step 202 is zero, if "Yes" enters step 204, if
"No" enters step 205；
Step 204：Current localization time slot belongs to positioning label MS, positioning label MS and emits positioning letter in current localization time slot
Number；
Step 205：Current localization time slot is not belonging to positioning label MS, and positioning label MS does not emit in current localization time slot to be determined
Position signal；
Step 206：Into next localization time slot, localization time slot number x adds 1；
Step 207：Judge whether current localization time slot number x is more than an+sn × tn, wherein an, sn and tn is respectively last
One section of initial value, number of steps and number of repetition, if "Yes" enters step 208, if "No" return to step 201；
Step 208：Into next locating periodically, localization time slot number x is started counting up from 1.
The invention discloses a kind of storage of localization time slot table of positioning label and analytic methods, utilize the side of fragmented storage
The localization time slot gauge pressure that formula stores single-bit mode contracts, and provides corresponding localization time slot table analytic method, when
The memory space that localization time slot table is substantially reduced in the case that localization time slot number is numerous in one locating periodically, solves and is depositing
The localization time slot table storage problem in the smaller positioning label in space is stored up, the hardware cost of positioning system has been saved.
As the above mentioned, although having illustrated and described the preferred embodiment of the present invention, without departing substantially from this hair
In the case of bright spirit and scope, many changes can be carried out.The scope of the present invention is not by the open institute of preferred embodiment as a result,
Limitation.But it should determine the present invention entirely by reference to following claims.
Claims (6)
1. a kind of compression and storage method of the single-bit localization time slot allocation table indicated with Bit String, wherein each bit tool
There are the first bit value or the second bit value, and wherein, single-bit localization time slot allocation table includes several code unit, wherein
One code unit is the institute before from the bit with the first bit value to next bit with the first bit value
There are the bit, compression and storage method to include：
Single-bit localization time slot allocation table is divided into N sections of continuous datas so that per have in segment data a kind of code unit and
Code unit in adjacent two segment data differs；And
It will be indicated per segment data initial value, number of repetition value and step value, wherein initial value characterizes first in the segment data
Digit of a bit in single-bit localization time slot allocation table, number of repetition value characterize the weight of the code unit in the segment data
Again it counts, step value characterizes the number of bits with the second bit value in the code unit of the segment data.
2. compression and storage method as described in claim 1, wherein the first bit value is 1, and the second bit value is 0.
3. compression and storage method as described in claim 1, wherein i-th section of initial value ai passes through ai=a (i-1)+(s (i-
1)+1) × t (i-1) is calculated, wherein a (i-1) indicates that (i-1)-th section of initial value, s (i-1) indicate (i-1)-th section of stepping
Value, t (i-1) indicate (i-1)-th section of number of repetition, and wherein, and i is the integer more than 1.
4. compression and storage method as described in claim 1 further includes the total hop count N of storage data.
5. compression and storage method as described in claim 1, wherein initial value, number of repetition value or step value distribute two words
Section indicates.
6. compression and storage method as described in claim 1, which is characterized in that the single-bit localization time slot allocation table is for referring to
Show positioning label transmitting positioning signal, when the bit has the first bit value, positioning label is corresponded in the bit
Localization time slot in emit positioning signal, when the bit have the second bit value when, positioning label in the bit pair
Do not emit positioning signal in the localization time slot answered.
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