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Method and device for accessing node to time slot resource

A technology of time slot resources and access time slots, which is applied in the field of node access time slot resources, and can solve problems such as the inability to guarantee the reliability of public safety applications.

Active Publication Date: 2014-06-04
DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present invention provides a method for nodes to access time slot resources, which is used to solve the problem that the reliability of public safety applications cannot be guaranteed due to the collision of time slot resources when nodes with different attributes access, and effectively improves the reliability of the vehicle. The safety of the road, as well as the traffic capacity of the road, improve the design of the communication system

Method used

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  • Method and device for accessing node to time slot resource
  • Method and device for accessing node to time slot resource
  • Method and device for accessing node to time slot resource

Examples

Experimental program
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Embodiment 1

[0052] Embodiment one (specifically as Figure 6A Shown): The following is a detailed description of the method for the first type of device A1 to access time slot resources in the vehicle network system (B1 is the second type of device), and the operation steps are as follows:

[0053] Step 600: A1 judges A1's dedicated time slot resources (N 1 =10: Whether the number of idle time slot resources in time slot resources 1~5, 51~52) meets the number of time slot resources required by A1 to access services, if so, A1 selects the idle time slot resources in A1's dedicated time slot resources time slot resources for access (i.e. Figure 6B in step 1); otherwise, go to step 610;

[0054] Step 610: A1 judges the shared time slot resources with B1 (N 2 =10: time slot resources 6~10, 56~60) and dedicated time slot resources of A1 (N 1 =10: Whether the total number of idle time slot resources in time slot resources 1~5, 51~52) satisfies the number of time slot resources required by ...

Embodiment 2

[0065] Embodiment two (specifically as Figure 8A Shown): The following is a specific description of the method for the second type of device B2 to access time slot resources in the vehicular network system (wherein the first type of device is A2), the operation steps are as follows:

[0066] Step 800: B2 judges B2's dedicated time slot resources (N 3 =70: Whether the number of idle time slot resources in time slot resources 16~50, 66~100) meets the number of time slot resources required by B2 to access services, if so, then B2 selects the free time slot resources for access (i.e. Figure 8B in step 1); otherwise, go to step 810;

[0067] Step 810: B2 judges the shared time slot resources with A2 (N 2 =20: time slot resources 6~15, 56~65) and whether the total number of free time slot resources in the dedicated time slot resources of B2 meets the number of time slot resources required by B2 to access services, if so, then B2 chooses B2 All the free time slot resources in t...

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Abstract

The invention relates to the communication technology, discloses a method and a device for accessing a node to a time slot resource and aims to solve the problem that time slot resources collide to cause the reliability of public security applications to be unable to be guaranteed when nodes of different attributes are accessed to a network. According to the method, when accessed to a time slot resource, a first node first checks whether idle time slot resources in special time slot resources for the node include a time slot resource required for a to-be-accessed service of the node; then, the first node checks whether total idle time slot resources in time slot resources shared by the first node with other nodes and in the special time slot resources for the node include a time slot resource required for the to-be-accessed service of the node if the idle time slot resources in the special time slot resources for the node do not include a time slot resource required for the to-be-accessed service of the node; and the first node selects a time slot resource from time slot resources to which the first node has access and is accessed to the time slot resource if the total idle time slot resources in the time slot resources shared by the first node with other nodes and in the special time slot resources for the node do not include a time slot resource required for the to-be-accessed service of the node. Therefore, the problem that time slot resources collide to cause the reliability of public security applications to be unable to be guaranteed when nodes of different attributes are accessed is solved.

Description

technical field [0001] The invention relates to communication technology, in particular to a method and device for node accessing time slot resources. Background technique [0002] With the development of in-vehicle communication systems and the gradual maturity of mobile ad hoc network technology, the demand for public safety applications such as management monitoring and life safety emergency notifications to be added to vehicle-road collaborative communication systems is also increasing. [0003] The STDMA algorithm based on the slotted MAC method proposed by ETSI and the ALOHA algorithm for mobile time slotting have no difference between the time slots in the frame in the system. Among them, the ALOHA (Mobile SlottedAloha, MS-ALOHA) mechanism is a DSRC MAC layer access and resource allocation mechanism based on time-sharing. The resource allocation is based on the frame structure and takes slot (time slot) as the unit. [0004] refer to figure 1 As shown, every N slots...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08
Inventor 赵丽房家奕赵毅冯媛李凤
Owner DATANG GOHIGH INTELLIGENT & CONNECTED TECH (CHONGQING) CO LTD