Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Data transmission method and device

A data transmission method and data packet technology, which are applied in the field of communication to achieve the effect of ensuring fairness

Active Publication Date: 2015-09-16
DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The above slot resource allocation algorithm based on slot reservation (such as RR-ALOHA, MS-ALOHA, SU-ALOHA, etc.) solves the problem of slot resource maintenance. How do nodes use the slot resource allocation algorithm based on slot reservation? Obtaining resources to send data packets is a resource scheduling problem, and there is no resource scheduling method suitable for the time slot resource allocation algorithm based on time slot reservation in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data transmission method and device
  • Data transmission method and device
  • Data transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0187] Embodiment 1: When the usage time of the sending resource used to send the data packet in the node arrives, the priority corresponding to the data packet with the shortest remaining sending time in the sending buffer queue is the same as the priority of the arriving sending resource.

[0188] Such as Figure 6 As shown, a frame (Frame) period contains 8 resources. Before Frame2, each frame period will receive data packets corresponding to two types of services A and B from the upper layer. The priority of service A is 1, and the service corresponding to The priority of the data packet is also 1, the priority of service B is 2, and the priority of the data packet corresponding to this service is also 2. For the convenience of description, the data packets received in each frame period in service A are respectively recorded as a1 , a2, a3, ..., record the data packets received in each frame period in service B as b1, b2, b3, ... respectively, and the sending delay require...

Embodiment 2

[0195] Embodiment 2: When the use time of the sending resource used for sending the data packet in the node arrives, the priority corresponding to the data packet with the shortest remaining sending time in the sending buffer queue is different from the arriving priority.

[0196] Such as Figure 7 As shown, a frame (Frame) period contains 8 resources, and the data packets corresponding to service A and service B will be received from the upper layer in each frame period before Frame2, the priority of service A is priority 1, and the service The priority of the corresponding data packet is also priority 1, the priority of service B is 2, and the priority of the data packet corresponding to this service is also priority 2; in order to facilitate the description of the data packets received in each frame period in service A They are respectively recorded as a1, a2, a3, ..., and the data packets generated in each frame period of service B are recorded as b1, b2, b3. The data pac...

Embodiment 3

[0204] Embodiment 3: Resource scheduling when the resource priority number of the sending resource is different from the priority number corresponding to the data packet.

[0205] Such as Figure 8As shown, a frame (Frame) period contains 8 resources. Before Frame1, the data packet corresponding to service A will be received from the upper layer in each frame period. The priority of service A is priority 1, and the data corresponding to service A The priority of the packet is also priority 1. For the convenience of description, the data packets generated in each frame period of service A are respectively recorded as a1, a2, a3, ..., and the transmission delay requirement of the data packets corresponding to service A is 8ms; Sort the data packets in the sending buffer queue from less to more according to the remaining time allowed by the sending delay. The node occupies a sending resource in a frame cycle as resource 2. Starting from Frame2, the node receives the corresponding...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a data transmission method and a data transmission device, which are used for realizing data transmission through the combination of a resource scheduling algorithm based on remaining time and a time slot resource allocation algorithm based on time slot reservation, better supporting the prior transmission of high-priority data during time slot resource steal and time slot resource collision in congestion scenario by matching a time slot priority and a data packet priority as much as possible, and better ensuring the fairness when each node accesses a channel. The data transmission method comprises the steps of: maintaining transmission remaining time of a data packet according to transmission time delay information corresponding to the data packet when the data packet arrives a transmission cache queue; and determining a data packet to be transmitted currently and transmitting the data packet through currently arrived transmission resources according to the transmission remaining time of the data packet in the transmission cache queue, a corresponding priority and a resource priority of the transmission resource available for the nodes when service time of the transmission resources used for transmitting the data packet is up.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data sending method and device. Background technique [0002] With the development of in-vehicle communication systems and the gradual maturity of mobile ad hoc network technology, in order to realize real-time, dynamic and intelligent management of vehicles, Dedicated Short Range Communications (DSRC) for Internet of Vehicles has been specially developed internationally. protocol. DSRC organically connects vehicles with vehicles, vehicles and roadside information collection equipment through two-way transmission of information, and supports point-to-point and point-to-multipoint communication. [0003] The existing IoV DSRC resource allocation protocols can be divided into two categories. One is based on Carrier Sense Multiple Access (CSMA) / Carrier Aggregation (CA). When sending, first carry out carrier sense, if the channel is idle, then send data, if the channel is busy, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04W28/02H04W72/04
Inventor 赵毅房家奕赵丽冯媛李凤
Owner DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com