CN110166931B - Method and system for sending and responding synchronous signal in positioning period - Google Patents
Method and system for sending and responding synchronous signal in positioning period Download PDFInfo
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- CN110166931B CN110166931B CN201910289371.9A CN201910289371A CN110166931B CN 110166931 B CN110166931 B CN 110166931B CN 201910289371 A CN201910289371 A CN 201910289371A CN 110166931 B CN110166931 B CN 110166931B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
Abstract
A method and system for transmitting and responding synchronization signals in a positioning period are disclosed. The system controls the synchronous controller SC to send a plurality of synchronous signals to the positioning label MS in a positioning period T so as to prevent the positioning label MS from not starting timing operation because the positioning label MS does not receive the synchronous signals due to the influence of environment and self hardware and not transmitting the positioning signals in self positioning time slots because only one synchronous signal is in one positioning period T. When the synchronous controller SC sends a plurality of synchronous signals to the positioning tag MS in one positioning period T, the probability that the positioning tag MS receives the synchronous signals is increased, and the positioning tag MS can start timing operation only by responding to one of the synchronous signals, thereby realizing the function of transmitting the positioning signal in the positioning time slot belonging to itself. The method disclosed by the invention can improve the stability of the positioning system in an environment with strong signal interference and realize the positioning of the positioning label.
Description
Technical Field
The present disclosure relates to the field of wireless communications, and more particularly, to synchronization.
Background
The short-distance and high-precision wireless indoor positioning technology is widely applied to urban dense areas and indoor closed spaces. In the existing positioning system, positioning is mainly realized by adopting a mode that a positioning tag transmits a positioning signal and a positioning base station receives the positioning signal. The positioning system divides a positioning period into a plurality of positioning time slots, allocates the self positioning time slot for each positioning label, controls the time sequence synchronization between the positioning base station and the positioning label by using the synchronous controller so that each positioning label transmits a positioning signal in the self positioning time slot, and simultaneously determines which positioning label the positioning signal comes from by the positioning base station through the positioning time slot in which the positioning signal is received, thereby positioning the positioning label. The positioning time slots are distributed to the positioning tags, only one positioning tag in each positioning time slot in the same space to be positioned transmits a positioning signal, the positioning signal does not need to carry information of which positioning tag, and the positioning base station can judge which positioning tag the positioning base station belongs to according to the receiving time.
When each positioning period starts, the synchronous controller transmits a positioning period starting signal to the positioning tag, the positioning tag starts timing after receiving the positioning period starting signal, and transmits a positioning signal in the positioning time slot to which the positioning tag belongs until the positioning time slot to which the positioning tag belongs is timed. However, in some areas where the signal interference strength is high, or the signal shielding is serious, or due to the hardware of the positioning tag, part of the initial signal of the positioning cycle may be omitted by the positioning tag, so that the positioning tag cannot respond in the positioning cycle, and thus the positioning signal cannot be transmitted, and the positioning of the positioning tag cannot be realized.
Therefore, how to research the scheme that the positioning system can also position the positioning tag when the positioning cycle start signal is omitted becomes a problem that researchers in the field need to solve urgently.
Disclosure of Invention
The invention provides a sending and responding method of synchronous signals in a positioning period, which divides a positioning period into a plurality of positioning time slots with equal time length, allocates the positioning time slots for positioning labels, and the positioning labels transmit the positioning signals in the self positioning time slots, and is characterized in that n synchronous signals are transmitted to the positioning labels in one positioning period, and the positioning time slots at intervals between two adjacent synchronous signals are a positioning time slot set; the positioning label stores the number of the positioning time slots contained in each positioning time slot set, the positioning time slot set label i where the positioning time slot belonging to the positioning label is located and the position number ai of the positioning time slot belonging to the positioning label in the positioning time slot set; when the positioning tag receives the synchronous signal, starting timing operation, and determining timing time according to the number of the positioning time slots contained in the stored positioning time slot set, the positioning time slot set label i where the positioning time slot belongs to the positioning tag and the position number a of the positioning time slot in the positioning time slot set, so as to enter the positioning time slot belonging to the positioning tag to transmit the positioning signal.
According to one aspect of the present invention, a system for sending and responding a synchronization signal in a positioning cycle is provided, the system includes a synchronization controller and a positioning tag, the system divides a positioning cycle into a plurality of positioning time slots with equal duration, and allocates a positioning time slot for the positioning tag, the positioning tag transmits a positioning signal in its own positioning time slot, the system is characterized in that the synchronization controller is configured to transmit n synchronization signals to the positioning tag in a positioning cycle, and a positioning time slot spaced between two adjacent synchronization signals is a positioning time slot set; the positioning tag comprises a storage module, a receiving module, a timing module and a sending module, wherein the storage module is used for storing the number of positioning time slots contained in each positioning time slot set, a positioning time slot set label i where the positioning time slot belonging to the storage module is located and the position number ai of the positioning time slot belonging to the storage module in the positioning time slot set; after receiving the synchronous signal, the receiving module triggers the timing module to start timing operation; the timing module determines timing time according to the number of the positioning time slots contained in the stored positioning time slot set, the positioning time slot set label i where the positioning time slot belongs to the timing module and the position number a of the positioning time slot in the positioning time slot set, and informs the transmitting module to transmit the positioning signal when the timing is finished.
The invention has the advantages that when the synchronous controller SC sends a plurality of synchronous signals to the positioning label MS in a positioning period T, the probability of receiving the synchronous signals by the positioning label MS is increased, and the positioning label MS can start timing operation only by responding to one of the synchronous signals, thereby realizing the function of transmitting the positioning signals in the self positioning time slot. The method disclosed by the invention can improve the stability of the positioning system in an environment with strong signal interference and realize the positioning of the positioning label.
Drawings
Fig. 1 is a timing diagram of a synchronization controller SC and a positioning tag MS in a positioning system 100 according to an embodiment of the invention;
fig. 2 is a flow chart of a method 200 for sending and responding to a synchronization signal in a positioning period T according to an embodiment of the invention.
Fig. 3 shows a schematic diagram of a modular structure 300 of a location tag MS in the location system 100 according to an embodiment of the invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described herein are only for illustration and are not intended to limit the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known circuits, materials, or methods have not been described in detail in order to avoid obscuring the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment," "in an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like reference numerals refer to like elements. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 is a timing diagram of the synchronization controller SC and the positioning tag MS in the positioning system 100 according to an embodiment of the present invention. In one positioning period T, the synchronization controller SC transmits n synchronization signals, i.e., the synchronization signal SYN1 to the synchronization signal SYNn, to the positioning tag. With i as a mark of the synchronization signal, Mi positioning time slots are provided between the synchronization signal SYNi and the synchronization signal SYN (i +1), and Mi positioning time slots between the synchronization signal SYNi and the synchronization signal SYN (i +1) are referred to as a positioning time slot set TSi. The number Mi of the positioning time slots in each positioning time slot set TSi is stored in the synchronous controller SC and the positioning tag MS. The positioning time slot allocated by the positioning system 100 to the current positioning tag MS may be located in one or more positioning time slot sets TS, and the positioning tag MS stores the position number a of the positioning time slot belonging to itself in the positioning time slot set TS. In one embodiment, if the positioning time slot allocated by the positioning system 100 to the current positioning tag MS is the ai-th positioning time slot in the positioning time slot set TSi, the positioning tag MS may transmit the positioning signal in its own positioning time slot by receiving any one of the synchronization signals SYN1 and SYN.
In one embodiment, in one positioning period T, the positioning tag MS does not respond to any of the synchronization signals SYN1 to SYN i after receiving any other synchronization signal. When receiving a synchronization signal SYNj, the positioning tag MS starts to start timing operation, wherein j is more than or equal to 1 and less than or equal to i, the positioning tag MS enters the second ai positioning time slot in the positioning time slot set TSi after recording the duration of Mj + M (j +1) + … + M (i-1) + ai-1 positioning time slots, and the positioning tag MS transmits a positioning signal in the second ai positioning time slot in the positioning time slot set TSi.
Fig. 2 is a flow chart of a method 200 for synchronizing multiple synchronization signals in a positioning period T according to an embodiment of the invention. In the embodiment shown in fig. 2, the positioning time slot allocated by the positioning system 100 for the current positioning tag MS is the ai-th positioning time slot located in the positioning time slot set TSi, and the method 200 for synchronizing multiple synchronization signals in the positioning period T includes the following steps:
step 201: the positioning system 100 divides a positioning period T into n positioning time slot sets, and the synchronous controller SC and the positioning standard MS store the number M of positioning time slots in each positioning time slot set;
step 202: the synchronous controller SC transmits a jth synchronous signal SYNj to the positioning label MS, and for the first circulation, the initial value of j is 1;
step 203: judging whether the positioning tag MS receives the synchronization signal SYNj, if so, entering a step 204, and if not, entering a step 205;
step 204: a positioning label MS records the duration of Mj + M (j +1) + … + M (i-1) + ai-1 positioning time slots, then enters the second ai positioning time slot in a positioning time slot set TSi, and transmits a positioning signal;
step 205: the synchronization controller SC is spaced by the duration of the jth set of positioning slots TSj and the synchronization signal index j is increased by 1.
Fig. 3 shows a schematic diagram of a modular structure 300 of a location tag MS in the location system 100 according to an embodiment of the invention. The positioning tag MS comprises a storage module 301, a receiving module 302, a timing module 303 and a sending module 304, wherein the storage module 301 is configured to store the number of positioning timeslots included in each positioning timeslot set, a positioning timeslot set label i where a positioning timeslot belonging to itself is located, and a position number ai of the positioning timeslot belonging to itself in the positioning timeslot set; after receiving the synchronization signal, the receiving module 302 triggers the timing module 303 to start timing operation; the timing module 303 determines a timing time according to the number of the positioning time slots included in the positioning time slot set stored in the storage module 301, the positioning time slot set label i where the positioning time slot belonging to itself is located, and the position number a of the positioning time slot belonging to itself in the positioning time slot set, and notifies the transmitting module 304 to transmit the positioning signal when the timing is completed.
The invention discloses a method and a system for synchronizing multiple synchronous signals in a positioning period T, wherein the system controls a synchronous controller SC to send multiple synchronous signals to a positioning label MS in one positioning period T so as to prevent the positioning label MS from not receiving the synchronous signals due to the influence of environment and self hardware and starting timing operation because only one synchronous signal is in one positioning period T, and therefore the positioning label MS cannot transmit the positioning signals in self positioning time slots. When the synchronous controller SC sends a plurality of synchronous signals to the positioning tag MS in one positioning period T, the probability that the positioning tag MS receives the synchronous signals is increased, and the positioning tag MS can start timing operation only by responding to one of the synchronous signals, thereby realizing the function of transmitting the positioning signal in the positioning time slot belonging to itself. The method disclosed by the invention can improve the stability of the positioning system in an environment with strong signal interference and realize the positioning of the positioning label.
As noted above, while the preferred embodiments of the invention have been illustrated and described, many changes can be made without departing from the spirit and scope of the invention. Accordingly, the scope of the invention is not limited by the disclosure of the preferred embodiments. Rather, the invention should be determined entirely by reference to the claims that follow.
Claims (10)
1. A method for sending and responding synchronous signals in a positioning period divides a positioning period into a plurality of positioning time slots with equal time length, and allocates positioning time slots for positioning tags, and the positioning tags transmit positioning signals in the self positioning time slots, which is characterized in that n synchronous signals are transmitted to the positioning tags in one positioning period, and the positioning time slots at intervals between two adjacent synchronous signals are a positioning time slot set; the positioning label stores the number of the positioning time slots contained in each positioning time slot set, the positioning time slot set label i where the positioning time slot belonging to the positioning label is located and the position number ai of the positioning time slot belonging to the positioning label in the positioning time slot set; when the positioning tag receives the synchronous signal, starting timing operation, and determining timing time according to the number of the positioning time slots contained in the stored positioning time slot set, the positioning time slot set label i where the positioning time slot belongs to the positioning tag and the position number ai of the positioning time slot in the positioning time slot set, so as to enter the positioning time slot belonging to the positioning tag to transmit the positioning signal.
2. A method of transmitting and responding to a synchronization signal in a positioning cycle according to claim 1, wherein k is used as a mark of the synchronization signal, and a set TSk of positioning time slots between the synchronization signal SYN k and the synchronization signal SYN (k +1) has Mk positioning time slots; the positioning time slot allocated for the current positioning label is the second ai positioning time slot in the positioning time slot set TSi, the positioning label receives the synchronization signal SYNj firstly, starts to start timing operation, wherein j is more than or equal to 1 and less than or equal to i, and the positioning label MS records the duration of Mj + M (j +1) + … + M (i-1) + ai-1 positioning time slots, then enters the positioning time slot belonging to the positioning label MS and transmits a positioning signal.
3. A method for sending and responding to a synchronization signal in a positioning cycle according to claim 2, wherein the positioning tag does not respond to any of the received synchronization signals SYN1 and SYN i after receiving any of the synchronization signals in a positioning cycle.
4. A method of transmission and response of synchronisation signals in positioning cycles according to any of claims 1 to 3, characterised in that one or more positioning slots are allocated to a positioning tag in a positioning cycle and that each positioning slot is entered according to the method of any of claims 1 to 3 when a plurality of positioning slots are allocated to a positioning tag.
5. A method for transmitting and responding to a synchronization signal in a positioning cycle according to claim 1, wherein said synchronization signal is a 2.4GHz communication signal and said positioning signal is an ultra-wideband signal.
6. A system for sending and responding a synchronous signal in a positioning period comprises a synchronous controller and a positioning tag, wherein the system divides a positioning period into a plurality of positioning time slots with equal time length and allocates the positioning time slots for the positioning tag, and the positioning tag transmits the positioning signal in the positioning time slot belonging to the positioning tag,
the synchronous controller is used for transmitting n synchronous signals to the positioning tags in a positioning period, and a positioning time slot at an interval between two adjacent synchronous signals is a positioning time slot set;
the positioning label comprises a storage module, a receiving module, a timing module and a sending module, wherein,
the storage module is used for storing the number of the positioning time slots contained in each positioning time slot set, the positioning time slot set labels i where the positioning time slots belonging to the storage module are located and the position number ai of the positioning time slots belonging to the storage module in the positioning time slot set;
after receiving the synchronous signal, the receiving module triggers the timing module to start timing operation;
the timing module determines timing time according to the number of the positioning time slots contained in the stored positioning time slot set, the positioning time slot set label i where the positioning time slot belongs to the timing module and the position number ai of the positioning time slot in the positioning time slot set, and informs the transmitting module to transmit the positioning signal when the timing is finished.
7. A system for transmission and response of a synchronization signal in a positioning cycle according to claim 6, wherein k is taken as a mark of the synchronization signal, and a set TSk of positioning time slots between the synchronization signal SYNk and the synchronization signal SYN (k +1) has Mk positioning time slots; the positioning time slot allocated for the current positioning label is the second ai positioning time slot in the positioning time slot set TSi, the positioning label receives the synchronization signal SYNj firstly, starts to start timing operation, wherein j is more than or equal to 1 and less than or equal to i, and the positioning label MS records the duration of Mj + M (j +1) + … + M (i-1) + ai-1 positioning time slots, then enters the positioning time slot belonging to the positioning label MS and transmits a positioning signal.
8. A system for sending and responding to synchronization signals in positioning cycles as claimed in claim 7, wherein the positioning tag does not respond to any of the synchronization signals SYN1 to SYN i after receiving any of the synchronization signals in a positioning cycle.
9. A system for transmission and response of synchronization signals in positioning cycles according to any of claims 6 to 8, characterized in that one or more positioning slots are allocated to a positioning tag in a positioning cycle, and that the system according to any of claims 6 to 8 enters each positioning slot when a plurality of positioning slots are allocated to a positioning tag.
10. A system for sending and responding to synchronization signals in a positioning cycle as recited in claim 6, wherein said synchronization signals are 2.4GHz communication signals and said positioning signals are ultra-wideband signals.
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| CN111988736B (en) * | 2020-07-23 | 2023-02-10 | 成都四相致新科技有限公司 | Label scheduling method and system |
| CN113347706B (en) * | 2021-06-01 | 2023-05-16 | 四川中电昆辰科技有限公司 | System and method for determining position occurrence time of device to be positioned in positioning system |
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| CN102088765A (en) * | 2009-12-03 | 2011-06-08 | 北京时代凌宇科技有限公司 | Method, device and system for acquiring positioning data |
| JP5655419B2 (en) * | 2010-08-04 | 2015-01-21 | ソニー株式会社 | Receiving device, receiving method, and portable terminal |
| CN102970745A (en) * | 2012-10-29 | 2013-03-13 | 云南电网公司西双版纳供电局 | Multi-target real-time positioning system and implementation method based on ultra wide band (UWB) |
| CN104066169A (en) * | 2013-03-18 | 2014-09-24 | 中兴通讯股份有限公司 | Positioning method and device |
| US9961559B2 (en) * | 2015-12-14 | 2018-05-01 | Nestwave Sas | Accurate short range positioning with wireless signals |
| CN109001668B (en) * | 2018-04-10 | 2022-11-18 | 四川中电昆辰科技有限公司 | Positioning tag response method and system in positioning period set |
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