[go: up one dir, main page]

CN109561396B - Data transmission system for robot - Google Patents

Data transmission system for robot Download PDF

Info

Publication number
CN109561396B
CN109561396B CN201811527206.4A CN201811527206A CN109561396B CN 109561396 B CN109561396 B CN 109561396B CN 201811527206 A CN201811527206 A CN 201811527206A CN 109561396 B CN109561396 B CN 109561396B
Authority
CN
China
Prior art keywords
base station
transmission system
time slot
data transmission
data
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
Application number
CN201811527206.4A
Other languages
Chinese (zh)
Other versions
CN109561396A (en
Inventor
张晓峰
胡俊杰
刘镇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Tianze Communication Technology Co ltd
Original Assignee
Zhejiang Tianze Communication Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Tianze Communication Technology Co ltd filed Critical Zhejiang Tianze Communication Technology Co ltd
Priority to CN201811527206.4A priority Critical patent/CN109561396B/en
Publication of CN109561396A publication Critical patent/CN109561396A/en
Application granted granted Critical
Publication of CN109561396B publication Critical patent/CN109561396B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0005Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a data transmission system for a robot, which is a point-to-multipoint time division duplex two-way transmission system and consists of 1 base station and a plurality of terminals. Each frame time slot of the system is divided into a downlink time slot, an uplink access time slot and N uplink data time slots. All downlink time slots are kept synchronous in time, and all uplink data time slots are kept synchronous through feedback control of a base station side. The base station confirms the communication relation with the terminal through the downlink time slot and the uplink access time slot, and the terminal transmits data with the base station through the uplink data time slot. In addition, the data transmission system also has the advantages of small downlink bandwidth, good performance, support of multi-frequency point expansion and no limit on the number of frequency points. Therefore, the invention can realize the communication between the base station and a plurality of terminals, can meet the high-performance requirement of terminal control, and does not interfere with each other among the terminals.

Description

Data transmission system for robot
Technical Field
The invention relates to the technical field of data transmission, in particular to a data transmission system for a robot.
Background
Existing communication systems for robots are broadly classified into several types: mobile public network (2G/3G/4G), wifi, unidirectional transmission, narrowband data transmission, FDD bidirectional transmission, TDD bidirectional transmission and the like.
Mobile public network: its performance depends on network coverage and cannot be used where there is no network.
And wifi: the performance is poor under the complex multipath environment, and long-distance transmission cannot be satisfied.
Unidirectional transmission: only unidirectional data transmission can be performed, and an additional reverse link is required to realize bidirectional transmission.
Narrow-band data transmission: the narrow-band two-way frequency hopping or spread spectrum system has low data transmission rate and long transmission distance, but can only be used for control and cannot meet the requirement of large-quantity transmission of images and the like.
FDD bidirectional transmission: the two-way transmission of FDD is satisfied to 2 frequency points that need, and when two frequency points were comparatively close, there was great interference in receiving and dispatching, and the performance degradation is comparatively obvious, and radio frequency transceiver device all needs 2 sets simultaneously, and the cost is higher.
TDD two-way transmission: for FDD, TDD separates transmission and reception in time, and does not generate interference, and bidirectional transmission can be performed using 1 frequency point, but the requirements for time synchronization and frequency accuracy are high when point-to-multipoint transmission is performed.
When the robot is applied, the control data volume is generally low, the data volume of the returned image and state is large, the uplink data and the downlink data are obviously asymmetric, and the control performance of the robot needs to be required to be greater than the image transmission performance so as to ensure the reliability of the control signal of the robot. However, in many scenarios, a plurality of robots are required to work simultaneously, and the robots are controlled and transmitted by independent wireless devices, so that it is difficult to ensure that no interference exists between the robots and the performance is not reduced.
Disclosure of Invention
The invention aims to provide a data transmission system for robots, which solves the problems that in the prior art, when a plurality of robots work simultaneously, no interference exists between the robots and the performance is not reduced.
In order to achieve the purpose, the invention provides the following scheme:
a data transmission system for a robot is a point-to-multipoint time division duplex two-way transmission system, and consists of 1 base station and a plurality of terminals, wherein the transmission time slot cycle of the data transmission system is T, and each frame of time slot is divided into a downlink time slot, an uplink access time slot and N uplink data time slots; all the downlink time slots are kept synchronous in time, and all the uplink data time slots are kept synchronous through feedback control of a base station side; the data transmission system includes:
step 101: the base station is powered on and started, downlink signals are sent according to the local time slot allocation of the base station, and meanwhile, whether the uplink access time slot has the uplink access signals or not is detected, wherein the downlink signals comprise base station broadcast signaling, data information, voice information and control information;
step 102: the terminal is powered on and started, the downlink signals are detected one by one at frequency points until the downlink signals are locked, and base station broadcast parameters carried in the downlink signals are analyzed;
step 103: the terminal sends an appointed uplink access signal in an appointed uplink access time slot according to the base station broadcast parameters, and simultaneously detects whether an access feedback signaling exists in a downlink signal;
step 104: when the base station detects an uplink access signal in an uplink access time slot, the base station sends an access feedback signaling in a downlink signal;
step 105: the terminal sends data in a specified uplink data time slot according to the received access feedback signaling, wherein the data comprises image information, voice information and state information;
step 106: and the base station receives the data sent by the uplink data time slot.
Optionally, the data transmission system further includes:
step 107: the terminal which is normally linked needs to send appointed heartbeat signaling at regular intervals, and the base station can feed back one heartbeat signaling after receiving the heartbeat signaling sent by the terminal so as to maintain the normal use of the link.
Optionally, the data transmission system further includes:
step 108: and when the terminal does not receive the heartbeat signaling fed back by the base station in the appointed time interval, the terminal returns to the power-on state and carries out the uplink access state again.
Optionally, the data transmission system further includes:
step 109: when the terminal does not send data any more, the terminal sends a logout request, stops sending uplink access signals, stops receiving downlink signals, and enters a low power consumption mode or a power-off state.
Optionally, the data transmission system further includes:
step 110: and when the base station receives a logout request or the uplink data time slot of the base station does not receive a specified signal in a specified time interval, the base station actively cancels the allocated time slot and gives up the actively cancelled time slot to other terminals.
Optionally, the data transmission system further includes:
step 111: and when the base station finds that the current frequency point is fully occupied by the terminal, the base station automatically sends a downlink signal at the next frequency point, and the terminal establishes a link on the newly added frequency point and receives and transmits data.
Optionally, the base station carries currently used frequency point information in the downlink signal, and when the terminal receives the downlink signal of any frequency point, the terminal can acquire the frequency point information and the use condition used by the current data transmission system, so that the terminal can be conveniently and quickly switched to other frequency points to establish a link.
Optionally, the downlink timeslot is that a base station sends a base station broadcast parameter to a terminal, where the base station broadcast parameter has a data protocol; the downlink time slot is sent once every other transmission time slot period T.
Optionally, the uplink and the downlink of the data transmission system adopt different communication modes; a narrowband direct sequence spread spectrum technology is adopted for downlink, and the transmission bandwidth of a downlink single frequency point supports more than 400000 bits per second; the uplink adopts an orthogonal frequency division multiplexing technology, and the single-frequency point transmission bandwidth of the uplink supports more than 8 megabits per second.
Optionally, the number of frequency points in the data transmission system is not limited, and multi-frequency point extension is supported; the data transmission system realizes point-to-multipoint bidirectional transmission in 1 frequency point, and each frequency point supports at most 6 terminals.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a data transmission system for a robot, which is a point-to-multipoint time division duplex two-way transmission system. The data transmission system consists of 1 base station and a plurality of terminals, the transmission time slot period of the data transmission system is T, and each frame time slot is divided into a downlink time slot, an uplink access time slot and N uplink data time slots. The base station confirms the communication relation with the terminal through the downlink time slot and the uplink access time slot, and the terminal transmits data with the base station through the uplink data time slot. Because the data transmission system provided by the invention supports multi-frequency point expansion and the number of frequency points is not limited, the communication between a base station and a plurality of terminals can be realized; the data transmission system provided by the invention has the uplink access time slot, so that the uplink data time slot and resources are allowed to be dynamically allocated, and the application of different terminals can be met; the data transmission system provided by the invention has small downlink bandwidth and good performance, and can meet the high-performance requirement of terminal control; all downlink time slots of the data transmission system provided by the invention are kept synchronous in time, and all uplink time slots are kept synchronous through feedback control of the base station side, so that the uplink and the downlink cannot interfere with each other, and further, the condition that a plurality of robots do not interfere with each other when working simultaneously is met. Therefore, the invention solves the problems that the plurality of robots in the prior art cannot ensure no interference among the robots and the performance is not reduced when the robots work simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block diagram of a data transmission system for a robot according to an embodiment of the present invention;
FIG. 2 is a time slot division diagram of a data transmission system for a robot according to an embodiment of the present invention;
fig. 3 is a timing diagram illustrating simultaneous operation of multiple frequency points in a data transmission system for a robot according to an embodiment of the present invention;
fig. 4 is a schematic workflow diagram of a data transmission system for a robot according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a data transmission system for robots, which can ensure that when a plurality of robots work simultaneously, the robots do not interfere with each other and the performance is not reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a block diagram of a data transmission system for a robot according to an embodiment of the present invention, and as shown in fig. 1, the data transmission system for a robot according to the embodiment of the present invention is a point-to-multipoint Time Division Duplex (TDD) bidirectional transmission system, where the data transmission system includes 1 base station and a plurality of terminals, the base station performs transceiving in a TDD manner, and the terminals perform transceiving in a TDD manner.
The number of frequency points in the data transmission system is not limited, and multi-frequency point spreading is supported.
The data transmission system realizes point-to-multipoint bidirectional transmission in 1 frequency point, and each frequency point supports at most 6 terminals.
The base station and the terminal in the data transmission system are both provided with a transceiver module, and the resources of the downlink time slot shared by the terminal are distinguished by data packet indication.
The transmission time slot cycle of the data transmission system for the robot provided by the embodiment of the invention is T, and each frame of time slot is divided into a downlink time slot, an uplink access time slot and uplink data time slots 1-N, as shown in FIG. 2.
The downlink time slot is that the base station sends base station broadcast parameters to the terminal, the base station broadcast parameters contain a data protocol, and the terminal can analyze the data sent to the terminal by the base station through the data protocol.
All data from the base station to the terminal are sent through the downlink time slot, and the downlink time slot is sent once every other transmission time slot period T.
The uplink and the downlink of the data transmission system for the robot provided by the embodiment of the invention adopt different communication modes. The downlink adopts narrow-band direct sequence spread spectrum (called narrow-band spread spectrum DSSS for short), the downlink performance is improved, the control requirement is met, and the single frequency point transmission bandwidth supports more than 400000 bits per second. The uplink adopts the orthogonal frequency division multiplexing technology, the frequency spectrum efficiency is improved, the requirement of large data volume is met, and the single-frequency point transmission bandwidth supports more than 8 megabits per second.
After receiving the downlink signal, the terminal sends an uplink access signal in a specific uplink access time slot according to the base station broadcast parameters sent by the base station, and after receiving the uplink access signal, the base station allocates time slot resources in the downlink time slot.
When all terminals are initially accessed, uplink access signals are sent in uplink access time slots and are distinguished through different sequences, and once the terminals are accessed, the uplink access signals are not sent any more.
And after receiving the resource allocation feedback, the terminal sends data in the appointed uplink data time slot. The N uplink data time slots can be flexibly distributed to a plurality of terminals through parameters, and the requirements of different data transmission rates are met.
When multiple frequency points work, as shown in fig. 3, the time allocation of the data transmission system for the robot provided by the embodiment of the present invention is still kept synchronous by the base station side, so as to ensure that the uplink and the downlink do not interfere with each other. All downlink time slots are kept synchronous in time, and all uplink data time slots are also kept synchronous through feedback control of the base station side. Higher ACPR is needed among multiple frequency points to meet the requirement and improve the dynamic range.
The work flow of the data transmission system for the robot provided by the embodiment of the invention is shown in fig. 4, and comprises the following steps:
step 101: the base station is powered on and started, downlink signals are sent according to the local time slot allocation of the base station, and meanwhile, whether the uplink access time slot has the uplink access signals or not is detected, wherein the downlink signals comprise information such as base station broadcast signaling, data, voice, control and the like.
Step 102: and the terminal is powered on and started, and the downlink signals are detected one by one at frequency points until the downlink signals are locked, and base station broadcast parameters carried in the downlink signals are analyzed.
Step 103: and the terminal sends an appointed uplink access signal in an appointed uplink access time slot according to the base station broadcast parameters, and simultaneously detects whether an access feedback signaling exists in a downlink signal.
Step 104: and when the base station detects that an uplink access signal exists in an uplink access time slot, the base station sends an access feedback signaling in a downlink signal.
Step 105: and the terminal sends data in a specified uplink data time slot according to the received access feedback signaling, wherein the data comprises information such as images, voice, states and the like.
Step 106: and the base station receives the data sent by the uplink data time slot.
The above steps complete the transmission of data. In addition, the workflow of the system provided by the embodiment of the invention further comprises:
step 107: the terminal which is normally linked needs to send appointed heartbeat signaling at regular intervals, and the base station can feed back one heartbeat signaling after receiving the heartbeat signaling sent by the terminal so as to maintain the normal use of the link.
Step 108: and when the terminal does not receive the heartbeat signaling fed back by the base station in the appointed time interval, the terminal returns to the power-on state and carries out the uplink access state again.
Step 109: when the terminal does not send data any more, the terminal sends a logout request, stops sending uplink access signals, stops receiving downlink signals, and enters a low power consumption mode or a power-off state.
Step 110: and when the base station receives a logout request or the uplink data time slot of the base station does not receive a specified signal in a specified time interval, the base station actively cancels the allocated time slot and gives up the actively cancelled time slot to other terminals.
Step 111: and when the base station finds that the current frequency point is fully occupied by the terminal, the base station automatically sends a downlink signal at the next frequency point, and the terminal establishes a link on the newly added frequency point and receives and transmits data. The base station carries currently used frequency point information in downlink signals, and when a terminal receives downlink signals of any frequency point, the terminal can acquire the frequency point information and the use condition used by a current data transmission system, so that the terminal can be conveniently and quickly switched to other frequency points to establish links.
The data transmission system for the robot provided by the invention has the following advantages.
First, in the point-to-multipoint system, each frequency point supports at most 6 terminals, and can support multi-frequency point spreading, and the number of frequency points is not limited.
Secondly, the downlink bandwidth is small, the performance is good, the high-performance requirement of robot control is met, and meanwhile, the terminal is simple, low in complexity and small in size. The resources of the terminal sharing the downlink time slot are distinguished by the data packet indication.
And thirdly, an uplink access time slot is provided, so that the uplink data time slot and resources are allowed to be dynamically allocated, and the application of different terminals is met.
Fourthly, the uplink bandwidth is large, the requirements of large data volume such as video images are met, the time delay is small, and the real-time performance is high. All terminals carry out uniform resource allocation through the base station, and the scheduling is flexible.
Fifthly, a single console is supported to control a plurality of robots, and image data and states sent by the plurality of robots are observed simultaneously.
Sixth, voice and data communication between robots (via base station forwarding) is supported.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. A data transmission system for a robot is characterized in that the data transmission system is a point-to-multipoint time division duplex two-way transmission system, the data transmission system consists of 1 base station and a plurality of terminals, the transmission time slot cycle of the data transmission system is T, and each frame of time slot is divided into a downlink time slot, an uplink access time slot and N uplink data time slots; all the downlink time slots are kept synchronous in time, and all the uplink data time slots are kept synchronous through feedback control of a base station side; the data transmission system includes:
the base station is powered on and started, downlink signals are sent according to the local time slot allocation of the base station, and meanwhile, whether the uplink access time slot has the uplink access signals or not is detected, wherein the downlink signals comprise base station broadcast signaling, data information, voice information and control information;
the terminal is powered on and started, the downlink signals are detected one by one at frequency points until the downlink signals are locked, and base station broadcast parameters carried in the downlink signals are analyzed;
the terminal sends an appointed uplink access signal in an appointed uplink access time slot according to the base station broadcast parameters, and simultaneously detects whether an access feedback signaling exists in a downlink signal;
when the base station detects an uplink access signal in an uplink access time slot, the base station sends an access feedback signaling in a downlink signal;
the terminal sends data in a specified uplink data time slot according to the received access feedback signaling, wherein the data comprises image information, voice information and state information;
and the base station receives the data sent by the uplink data time slot.
2. The data transmission system for a robot of claim 1, further comprising:
the terminal which is normally linked needs to send appointed heartbeat signaling at regular intervals, and the base station can feed back one heartbeat signaling after receiving the heartbeat signaling sent by the terminal so as to maintain the normal use of the link.
3. The data transmission system for a robot of claim 2, further comprising:
and when the terminal does not receive the heartbeat signaling fed back by the base station in the appointed time interval, the terminal returns to the power-on state and carries out the uplink access state again.
4. The data transmission system for a robot of claim 1, further comprising:
when the terminal does not send data any more, the terminal sends a logout request, stops sending uplink access signals, stops receiving downlink signals, and enters a low power consumption mode or a power-off state.
5. The data transmission system for a robot of claim 4, further comprising:
and when the base station receives a logout request or the uplink data time slot of the base station does not receive a specified signal in a specified time interval, the base station actively cancels the allocated time slot and gives up the actively cancelled time slot to other terminals.
6. The data transmission system for a robot of claim 1, further comprising:
and when the base station finds that the current frequency point is fully occupied by the terminal, the base station automatically sends a downlink signal at the next frequency point, and the terminal irrelevant to the current frequency point establishes a link on the newly added frequency point to receive and send data.
7. The data transmission system for the robot of claim 6, wherein the base station carries currently used frequency point information in downlink signals, and the terminal can obtain the frequency point information and the use condition used by the current data transmission system when receiving downlink signals of any frequency point, so that the terminal can be switched to other frequency points quickly and establish a link.
8. The data transmission system for the robot as claimed in claim 1, wherein the downlink timeslot is used for the base station to transmit base station broadcast parameters to the terminal, and the base station broadcast parameters include a data protocol; the downlink time slot is sent once every other transmission time slot period T.
9. The data transmission system for a robot according to claim 1, wherein the uplink and the downlink of the data transmission system use different communication methods; a narrowband direct sequence spread spectrum technology is adopted for downlink, and the transmission bandwidth of a downlink single frequency point supports more than 400000 bits per second; the uplink adopts an orthogonal frequency division multiplexing technology, and the single-frequency point transmission bandwidth of the uplink supports more than 8 megabits per second.
10. The data transmission system for a robot according to claim 1, wherein the number of frequency points in the data transmission system is not limited and multi-frequency point spreading is supported; the data transmission system realizes point-to-multipoint bidirectional transmission in 1 frequency point, and each frequency point supports at most 6 terminals.
CN201811527206.4A 2018-12-13 2018-12-13 Data transmission system for robot Active CN109561396B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811527206.4A CN109561396B (en) 2018-12-13 2018-12-13 Data transmission system for robot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811527206.4A CN109561396B (en) 2018-12-13 2018-12-13 Data transmission system for robot

Publications (2)

Publication Number Publication Date
CN109561396A CN109561396A (en) 2019-04-02
CN109561396B true CN109561396B (en) 2021-03-02

Family

ID=65869944

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811527206.4A Active CN109561396B (en) 2018-12-13 2018-12-13 Data transmission system for robot

Country Status (1)

Country Link
CN (1) CN109561396B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115297558B (en) * 2022-10-10 2023-09-19 西安云脉智能技术有限公司 Communication method and system of multiple LoRa nodes based on time division multiple access
CN117835430A (en) * 2023-02-09 2024-04-05 厦门纵行信息科技有限公司 Method and system for realizing multi-channel concurrent transmission

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437072A1 (en) * 1990-01-11 1991-07-17 Stc Plc Point-to-multipoint TDM/TDMA communication system using a packet-based frame structure
CN1343404A (en) * 1999-03-05 2002-04-03 诺基亚网络有限公司 Data transmission method and radio link system
EP1366585A1 (en) * 2001-02-06 2003-12-03 Harris Corporation Frame to frame timing sychronization system and method
CN101128029A (en) * 2006-08-18 2008-02-20 北京信威通信技术股份有限公司 A terminal access method in TDD communication system
CN101162984A (en) * 2006-10-12 2008-04-16 中兴通讯股份有限公司 Mobile terminal access method of TDD communication system
CN101467395A (en) * 2006-06-02 2009-06-24 诺基亚西门子通信有限责任两合公司 Method for transmitting signals in systems with point-to-multipoint connections
CN101110648B (en) * 2006-07-18 2010-11-24 华为技术有限公司 Method for detecting faulty ONU in PON
CN103516453A (en) * 2012-06-20 2014-01-15 福建先创通信有限公司 Multi-slot frame structure adopting time division multiple access mode and application thereof
CN106230538A (en) * 2016-07-28 2016-12-14 浙江天则通信技术有限公司 A single-carrier point-to-point time-division two-way wireless communication method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120195298A1 (en) * 2011-02-01 2012-08-02 Innovative Sonic Corporation Method and apparatus to avoid in-device coexistence interference in a wireless communication system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437072A1 (en) * 1990-01-11 1991-07-17 Stc Plc Point-to-multipoint TDM/TDMA communication system using a packet-based frame structure
CN1343404A (en) * 1999-03-05 2002-04-03 诺基亚网络有限公司 Data transmission method and radio link system
EP1366585A1 (en) * 2001-02-06 2003-12-03 Harris Corporation Frame to frame timing sychronization system and method
CN101467395A (en) * 2006-06-02 2009-06-24 诺基亚西门子通信有限责任两合公司 Method for transmitting signals in systems with point-to-multipoint connections
CN101110648B (en) * 2006-07-18 2010-11-24 华为技术有限公司 Method for detecting faulty ONU in PON
CN101128029A (en) * 2006-08-18 2008-02-20 北京信威通信技术股份有限公司 A terminal access method in TDD communication system
CN101162984A (en) * 2006-10-12 2008-04-16 中兴通讯股份有限公司 Mobile terminal access method of TDD communication system
CN103516453A (en) * 2012-06-20 2014-01-15 福建先创通信有限公司 Multi-slot frame structure adopting time division multiple access mode and application thereof
CN106230538A (en) * 2016-07-28 2016-12-14 浙江天则通信技术有限公司 A single-carrier point-to-point time-division two-way wireless communication method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
一种点对多点无线数据传输系统的设计;韦日华张春王志华;《电讯技术》;20031231;全文 *
基于全网时帧改变的TDMA Ad Hoc时隙分配协议;金瑞 刘作学 王俊达;《计算机应用》;20180821;全文 *
时分多址(TDMA)在点对多点无线通信系统中的应用;李树鲁;《山东大学毕业论文》;20051019;全文 *

Also Published As

Publication number Publication date
CN109561396A (en) 2019-04-02

Similar Documents

Publication Publication Date Title
US10721732B2 (en) Radio communication system, device and method for radio communication, and computer program
US5502722A (en) Method and apparatus for a radio system using variable transmission reservation
US7336638B2 (en) Method and apparatus for uplink synchronization maintenance with P2P communication in wireless communication networks
EP2728764B1 (en) Synchronous access method, and communication device and system in frequency hopping radio communication
CN100531076C (en) Increasing link capacity via concurrent transmissions inc entralized wireless LANS
CN110418413B (en) Signal transmission method applied to relay technology and related equipment
JP6399416B2 (en) System and method for setting cyclic prefix length
US20120113929A1 (en) Method and Device for Resource Allocation Control in Radio Communications System
CN108811083A (en) A kind of transmission method and device of paging instruction
RU2005106258A (en) METHOD AND DEVICE FOR WORKING WITH MOBILE NODES IN MULTIPLE CONDITIONS
CN101867964A (en) Method, system and device for determining cooperative transmission node
JP7577124B2 (en) Scheduling method for multiplexing in IAB network and IAB node
CN1929338B (en) Amalgamation method and equipment for honeycomb network and ubiquitous network
KR20220129038A (en) Resource configuration method, apparatus and device
US5504750A (en) Method and apparatus for a radio system operating on shared communication channels
CN109561396B (en) Data transmission system for robot
CN101925188B (en) A kind of downlink feedback information for trunk link transmission method and device
US20070064638A1 (en) Radio access system with extended service coverage
CN109391415B (en) Method and device for configuring synchronization signal block in RMSI, storage medium, base station and user equipment
JP2002335204A (en) Communication method between base stations
WO2022151885A1 (en) Communication method and apparatus
JP2005341297A (en) Wireless communication control apparatus and method
CN104486019A (en) Multi-carrier multi-modulation digital base station for 230MHz wireless private network communication system
KR101913617B1 (en) Method for wireless communication with d-hdma
WO2024036451A1 (en) Resource selection for subnetworks

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant