CN103188696B - A kind of digital enclave companding system and Delay Synchronization method thereof - Google Patents
A kind of digital enclave companding system and Delay Synchronization method thereof Download PDFInfo
- Publication number
- CN103188696B CN103188696B CN201110447326.5A CN201110447326A CN103188696B CN 103188696 B CN103188696 B CN 103188696B CN 201110447326 A CN201110447326 A CN 201110447326A CN 103188696 B CN103188696 B CN 103188696B
- Authority
- CN
- China
- Prior art keywords
- delay
- remote termination
- time
- end machine
- delay calibration
- 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
Landscapes
- Electric Clocks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a kind of digital enclave companding system and Delay Synchronization method thereof, this digital enclave companding system comprises near-end machine, remote termination, described near-end machine and remote termination are provided with signal receiving/transmission device, near-end machine time-delay calibration module is provided with in described near-end machine, described near-end machine time-delay calibration model calling near-end machine time-delay calibration passage, described remote termination is multiple, and in multiple remote termination, be provided with remote termination time-delay calibration passage, described remote termination time-delay calibration expanding channels remote termination time-delay calibration module, described remote termination time-delay calibration model calling delay compensation module.Digital enclave companding system of the present invention and Delay Synchronization method thereof, because near-end machine and remote termination are provided with time-delay calibration module, by Delay Synchronization method, eliminate co-channel interference phenomenon between each remote termination, avoid overlapping covering to affect, make each remote termination sending and receiving signal synchronous, ensure that in digital enclave companding system overlay area, signal quality is excellent.
Description
Technical field
The present invention relates to the communications field, particularly a kind of digital enclave companding system and Delay Synchronization method thereof.
Background technology
Along with the quickening of social informatization, the demand of outlying small towns to mobile communication improves day by day.But due to remote countryside distance cities and towns far away, be difficult to receive the base station signal from cities and towns, and these areas are by restriction that is geographical, economic condition, communication conditions is poor, according to the signal of primary frequency, be then easily affected by the external environment, radio propagation path loss is larger, and on ground, mountain area, type is complicated, and signal is easily stopped.Therefore, what adopt in remote villages is that digital enclave companding system carries out communication data transfer.Digital enclave companding system comprises near-end machine, remote termination, passes through transmission of wireless signals between near-end machine and remote termination.Digital enclave companding system, by compression and despreading method, converts the primary frequency signal of Base Transmitter to repeating signal, transmits between near-end machine and remote termination.
Traditional enclave companding system adopts the form of near-end machine and remote termination one-to-one to carry out networking design, namely a near-end machine and a remote termination carry out transfer of data, make like this in certain networking region, the number of devices of needs is more, and cable wiring manufacture difficulty is larger.And in the complicated overlay environments such as some highways, railway, tunnel, although existing enclave companding system also drags many cloth net modes in employing one, namely a near-end machine connects multiple remote termination, which reduce cable wiring manufacture complexity, decrease number of devices, but between near-end machine with remote termination, directly adopt coupled modes to be connected, when transfer of data, easily produce co-channel interference, overlapping covering phenomenon between remote termination, the poor signal quality of transmission, the signal affecting each remote termination sends and receives.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency existing in prior art, a kind of digital enclave companding system and Delay Synchronization method thereof are provided, this digital enclave companding system and Delay Synchronization method thereof can solve signal overlap between multiple remote termination and cover dispersive influence, make each remote termination sending and receiving signal synchronous, ensure that in digital enclave companding system overlay area, signal quality is excellent, solves the deficiency of existing networking application.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of digital enclave companding system, comprise near-end machine, remote termination, described near-end machine and remote termination are provided with signal receiving/transmission device, near-end machine time-delay calibration module is provided with in described near-end machine, described near-end machine time-delay calibration model calling near-end machine time-delay calibration passage, described remote termination is multiple, and in multiple remote termination, be provided with remote termination time-delay calibration passage, described remote termination time-delay calibration expanding channels remote termination time-delay calibration module, described remote termination time-delay calibration model calling delay compensation module.Preferably, described signal receiving/transmission device is Yagi antenna.
Described near-end machine time-delay calibration passage is the transmission channel of near-end machine time-delay calibration sequence, and remote termination time-delay calibration passage is the transmission channel of remote termination time-delay calibration sequence; The time difference of calibrating sequence of near-end machine time-delay calibration module for comparing the machine calibrating sequence and each remote termination and returning, obtains maximum delay information in each remote termination that near-end machine connects; Difference for comparing the difference of the machine time delay and near-end machine return time delay information, and is given the machine delay compensation module by each remote termination time-delay calibration module; Remote termination delay compensation module is made up of delayer, is used for compensating the machine time delay, realizes each remote termination consistent relative to near-end machine Delay.
Digital enclave companding system Delay Synchronization method, this Delay Synchronization method comprises the following steps:
1) time-delay calibration sequence is sent to each remote termination by near-end machine calibrated channel by near-end machine time-delay calibration module;
2) the time-delay calibration sequence that sent by remote termination time-delay calibration channel reception near-end machine of each remote termination, the calibrating sequence received to be returned by remote termination time-delay calibration module and is sent to near-end machine by each remote termination;
3) after near-end machine receives the calibrating sequence that each remote termination returns, carry out contrast with initialization calibrating sequence and process, the calibrating sequence that the machine sends is designated as T
0, the calibrating sequence time returned by remote termination is designated as T
1, by the different time difference △ T=T contrasted
1-T
0obtain the Delay of each remote termination, and most long delay information is sent to each remote termination by near-end machine calibrated channel;
4) after each remote termination receives most long delay information, the machine Delay that itself and remote termination time-delay calibration module memory store up is contrasted, obtain time delay difference, then time delay difference is write the machine delay compensation module and adjust, realize the time delay of each remote termination to near-end machine consistent.
compared with prior art, beneficial effect of the present invention:
1, because near-end machine and remote termination are provided with time-delay calibration module, by Delay Synchronization method, the Delay of the remote terminations at different levels automatically connected by near-end machine compensates consistent, ensure that the remote termination transmitting-receivings at different levels that near-end machine connects are synchronous, eliminate co-channel interference phenomenon between each remote termination, avoid overlapping covering to affect (namely avoiding the overlapping multidiameter delay interference covered), make each remote termination sending and receiving signal synchronous, ensure that digital enclave companding system one drags signal quality in the overlay area of many application excellent.
2, the Delay Synchronization adjustment of each remote termination and near-end machine completes automatically, in real time, accurately, decreases manual maintenance cost.
3, decrease number of devices of arranging net, reduce cable wiring manufacture component difficulty, greatly reduce networking cost.
Accompanying drawing illustrates:
Fig. 1 is digital enclave companding system structured flowchart of the present invention.
Embodiment
Below in conjunction with test example and embodiment, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
As shown in Figure 1, digital enclave companding system of the present invention, comprise near-end machine, remote termination, described near-end machine and remote termination are provided with signal receiving/transmission device, described signal receiving/transmission device is Yagi antenna, time-delay calibration module is provided with in described near-end machine, described time-delay calibration model calling time-delay calibration passage, described remote termination is multiple, also time-delay calibration passage is all provided with in multiple remote termination, described time-delay calibration expanding channels time-delay calibration module, described time-delay calibration model calling delay compensation module.
Described near-end machine time-delay calibration passage is the transmission channel of near-end machine time-delay calibration sequence, and remote termination time-delay calibration passage is the transmission channel of remote termination time-delay calibration sequence; The time difference of calibrating sequence of near-end machine time-delay calibration module for comparing the machine calibrating sequence and each remote termination and returning, obtains maximum delay information in each remote termination that near-end machine connects; Difference for comparing the difference of the machine time delay and near-end machine return time delay information, and is given the machine delay compensation module by each remote termination time-delay calibration module; Remote termination delay compensation module is made up of delayer, is used for compensating the machine time delay, realizes each remote termination consistent relative to near-end machine Delay.
Digital enclave companding system Delay Synchronization method of the present invention comprises the following steps:
1) time-delay calibration sequence is sent to each remote termination by near-end machine calibrated channel by near-end machine time-delay calibration module;
2) each remote termination is by the time-delay calibration sequence of remote termination time-delay calibration channel reception near-end machine transmission, and Delay is turned back to near-end machine by remote termination time-delay calibration module by each remote termination;
3) near-end machine receives calibrating sequence that each remote termination returns and initialization calibrating sequence and carries out contrast and process, and the calibrating sequence that the machine sends is designated as T
0, the calibrating sequence time returned by remote termination is designated as T
1, by the different time difference △ T=T contrasted
1-T
0obtain the Delay of each remote termination, and most long delay information is sent to each remote termination by near-end machine calibrated channel;
4) after each remote termination receives most long delay information, the machine Delay that itself and remote termination time-delay calibration module memory store up is contrasted, obtain time delay difference, then time delay difference is write the machine delay compensation module, realize the time delay of each remote termination to near-end machine by increase the machine time delay consistent.
Digital enclave companding system of the present invention and Delay Synchronization method thereof, eliminate co-channel interference phenomenon between each remote termination, avoid overlapping covering to affect, make each remote termination sending and receiving signal synchronous, ensure that in digital enclave companding system overlay area, signal quality is excellent.
Claims (3)
1. a digital enclave companding system, comprise near-end machine, remote termination, described near-end machine and remote termination are provided with signal receiving/transmission device, it is characterized in that, near-end machine time-delay calibration module is provided with in described near-end machine, described near-end machine time-delay calibration model calling near-end machine time-delay calibration passage, described remote termination is multiple, and in multiple remote termination, be provided with remote termination time-delay calibration passage, described remote termination time-delay calibration expanding channels remote termination time-delay calibration module, described remote termination time-delay calibration model calling delay compensation module;
The transmission channel that described near-end machine time-delay calibration passage provides for near-end machine time-delay calibration sequence, the transmission channel that remote termination time-delay calibration passage provides for remote termination time-delay calibration sequence;
The time difference of calibrating sequence of described near-end machine time-delay calibration module for comparing the machine calibrating sequence and each remote termination and returning, obtains maximum delay information in each remote termination that near-end machine connects; Difference for comparing the difference of the machine time delay and near-end machine return time delay information, and is given the machine delay compensation module by each remote termination time-delay calibration module;
Described remote termination delay compensation module is made up of delayer, is used for compensating the machine time delay, realizes each remote termination consistent relative to near-end machine Delay.
2. digital enclave companding system according to claim 1, is characterized in that, described signal receiving/transmission device is Yagi antenna.
3. digital enclave companding system Delay Synchronization method according to claim 1 and 2, is characterized in that, this Delay Synchronization method comprises the following steps:
1) time-delay calibration sequence is sent to each remote termination by near-end machine calibrated channel by near-end machine time-delay calibration module;
2) each remote termination is by the time-delay calibration sequence of remote termination time-delay calibration channel reception near-end machine transmission, and Delay is turned back to near-end machine by remote termination time-delay calibration module by each remote termination;
3) near-end machine receives calibrating sequence that each remote termination returns and initialization calibrating sequence and carries out contrast and process, and the calibrating sequence that the machine sends is designated as T
0, the calibrating sequence time returned by remote termination is designated as T
1, by the different time difference △ T=T contrasted
1-T
0obtain the Delay of each remote termination, and most long delay information is sent to each remote termination by near-end machine calibrated channel;
4) after each remote termination receives most long delay information, the machine Delay that itself and remote termination time-delay calibration module memory store up is contrasted, obtain time delay difference, then time delay difference is write the machine delay compensation module and adjust, realize the time delay of each remote termination to near-end machine consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110447326.5A CN103188696B (en) | 2011-12-28 | 2011-12-28 | A kind of digital enclave companding system and Delay Synchronization method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110447326.5A CN103188696B (en) | 2011-12-28 | 2011-12-28 | A kind of digital enclave companding system and Delay Synchronization method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103188696A CN103188696A (en) | 2013-07-03 |
| CN103188696B true CN103188696B (en) | 2015-10-21 |
Family
ID=48679583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110447326.5A Active CN103188696B (en) | 2011-12-28 | 2011-12-28 | A kind of digital enclave companding system and Delay Synchronization method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103188696B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707325A (en) * | 2017-11-03 | 2018-02-16 | 深圳市银河风云网络系统股份有限公司 | Synchronisation control means and terminal control system |
| CN115280690B (en) * | 2020-03-10 | 2024-03-19 | 哲库科技(上海)有限公司 | Methods, apparatus, systems, and media for delay line based transceiver calibration |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601830U (en) * | 2009-09-27 | 2010-10-06 | 西瑞克斯(北京)通信设备有限公司 | CDMA digital enclave companding system |
| EP2262299A2 (en) * | 1999-06-01 | 2010-12-15 | Qualcomm Incorporated | Method for cell extension in a tdma cellular telephone system |
| CN102221816A (en) * | 2010-04-19 | 2011-10-19 | 普天信息技术研究院有限公司 | Satellite time serving all-in-one machine and time serving method thereof |
-
2011
- 2011-12-28 CN CN201110447326.5A patent/CN103188696B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2262299A2 (en) * | 1999-06-01 | 2010-12-15 | Qualcomm Incorporated | Method for cell extension in a tdma cellular telephone system |
| CN201601830U (en) * | 2009-09-27 | 2010-10-06 | 西瑞克斯(北京)通信设备有限公司 | CDMA digital enclave companding system |
| CN102221816A (en) * | 2010-04-19 | 2011-10-19 | 普天信息技术研究院有限公司 | Satellite time serving all-in-one machine and time serving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103188696A (en) | 2013-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220085495A1 (en) | Systems and methods for distributing radioheads | |
| US9065465B2 (en) | PLC/wireless device coordinated wireless transmissions | |
| CN102158272B (en) | Method, device and system for calibrating radio-frequency channels | |
| US20110236024A1 (en) | Method and apparatus for picocell distributed radio heads providing macrocell capabilities | |
| WO2011155763A3 (en) | Method and device for transmitting/receiving channel state information in coordinated multipoint communication system | |
| JP7539538B2 (en) | System and method for distributing radio heads - Patents.com | |
| WO2010017628A8 (en) | Enabling downlink transparent relay in a wireless communications network | |
| CN105794141B (en) | Method in the method executed by wireless terminal and base station | |
| CN103533633B (en) | The same broadcasting method of the simulcasting system building based on E1 link | |
| GB201104981D0 (en) | Mobile radio network, relay node and method | |
| CN100550513C (en) | A kind of outdoor radio system device and channel correcting implementation method of smart antenna | |
| CN103188696B (en) | A kind of digital enclave companding system and Delay Synchronization method thereof | |
| CN101621842B (en) | MIMO base station system, method and device for correcting time-delay deviation among channels | |
| CN102281176A (en) | Multi-signal fusion access local terminal equipment and implementation method thereof | |
| CN103167598B (en) | A kind of remote communication method and device | |
| CN101154990B (en) | Synchronization method for multiple low-power launching pads leaded by high-power launching pad | |
| CN103843383A (en) | Remote coverage method and base station | |
| CN103139884A (en) | Method and device of enhancing calibration performance of intelligent antenna of test driven development (TDD) system | |
| CN104363523A (en) | Asymmetric communication network and method | |
| CN103188001B (en) | Digital enclave system and link gain balance method thereof | |
| CN111586705B (en) | Indoor 5G wireless coverage method based on wireless frequency shift technology | |
| CN202160189U (en) | Local terminal device for multi-signal fusion access | |
| CN206547100U (en) | A kind of audio video synchronization play system based on BTS wireless base stations simultaneous techniques | |
| CN101420260B (en) | Radio electric device node, distributed radio communication base station and communication method therefor | |
| KR101098413B1 (en) | Roaming realization method between wireless stations in the moving objects with high speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200731 Address after: 610000 No.6 building, hi tech Incubation Park, north section of Tianfu Avenue, Chengdu, Sichuan Province Patentee after: CHENGDU NTS SOFTWARE Co.,Ltd. Address before: 610041, Sichuan high tech Zone, Chengdu Tianfu Road, South extension line, high-tech incubator Park, building 3, 6 Patentee before: CHENGDU NTS TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |