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A Wireless Handover Admission Control Method Based on Handover History Information Statistics

A technology for admission control and historical information, applied in wireless communication, electrical components, etc., to reduce signaling overhead, improve service experience, and reduce preemption behavior

Active Publication Date: 2020-10-13
CHINA ELECTRONICS TECH GRP NO 7 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the characteristics of 4G soft capacity determine that C in the formula max with C new Both are time-varying variables and cannot be determined by measurement or simple calculation

Method used

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  • A Wireless Handover Admission Control Method Based on Handover History Information Statistics
  • A Wireless Handover Admission Control Method Based on Handover History Information Statistics
  • A Wireless Handover Admission Control Method Based on Handover History Information Statistics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-3 , a wireless handover admission control method based on handover history information statistics, comprising the following steps: S01: a terminal accesses a serving cell and establishes a radio bearer to transmit user service data; S02: a source cell sends a neighbor cell through a wireless connection control RRC signaling Measurement configuration information; S03: The terminal returns confirmation information through radio connection control signaling; S04: The terminal performs radio link quality measurement on the serving cell and adjacent cells according to the measurement configuration; S05: When the measurement report trigger condition in the measurement configuration is met , the terminal reports the measurement results of neighboring cells through wireless connection control signaling; S06: The serving cell makes a handover decision based on the measurement report and selects an appropriate target cell; S07: The source cell sends a handover pr...

Embodiment 2

[0037] Other parts are the same as in Embodiment 1. Further, the algorithm flow of the admission control described in step S08 mainly includes the following steps: S081: After receiving the handover request, the target cell starts RAC to perform handover request admission control; S082: RAC based on measurement, etc. To determine the load of the cell, under normal circumstances, the idle wireless resource should be greater than or equal to the set handover reserved resource threshold; otherwise, the RAC starts the resource preemption sub-process; S083: If the cell load is normal, or release part of the bearer through the resource preemption sub-process, Then the RAC calculates the information transmission rate required for the new bearer and estimates the spectrum efficiency of the reverse handover through forward handover statistical information; S084: The RAC calculates the wireless bandwidth required for the newly created bearer; if the idle wireless bandwidth of the current ...

Embodiment 3

[0039] The other parts are the same as in Embodiment 1 or 2. Further, when the idle wireless bandwidth of the current campus described in step S084 cannot meet the requirements, the source cell returns a handover request failure response as specifically including the following steps: S0841: The target cell RAC determines that the idle wireless bandwidth Insufficient resources, start the sub-process of wireless resource preemption; S0842: Determine whether the handover protection time slot timer is active, if it is activated, return a response message that resource preemption cannot be executed, and exit the preemption sub-process; when judging the handover protection If the slot timer is not activated, the established bearer with a lower priority than the newly created bearer will generate a bearer queue to be preempted in ascending order of priority through the traversal algorithm, that is, the bearer with the lowest priority is placed at the queue entry, and if the queue is em...

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Abstract

The present invention relates to the technical field of wireless handover admission control, more specifically, to a wireless handover admission control method based on statistics of handover history information. This method improves the handover success rate through the RAC design, ensures that the utilization rate of wireless resources is improved as much as possible when the cell load level is normal, reduces unnecessary preemption behavior for handover user bearers, improves the service experience of end users, and reduces access Network signaling overhead.

Description

technical field [0001] The present invention relates to the technical field of wireless handover admission control, and more specifically, to a wireless handover admission control method based on statistics of handover history information. Background technique [0002] The role of radio admission control (Radio Admission Control, RAC) is based on the overall resource usage of the wireless access network, comprehensively considering the QoS (Quality of Service, quality of service) requirements and priorities of new wireless data bearers and established wireless bearers, Data bearer requests are subject to admission control. The goal of RAC is to simultaneously ensure: efficient use of radio resources; and QoS of established bearers. RAC needs to find a balance between guaranteeing the service quality of accepted connections and admitting as many new connections as possible, and ensure that: the complexity of engineering implementation is acceptable; the system performance an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/24H04W36/30H04W72/04H04W72/10
CPCH04W36/0083H04W36/30H04W72/52H04W72/56H04W36/008375
Inventor 刘为张景温文坤闵铁锐
Owner CHINA ELECTRONICS TECH GRP NO 7 RES INST
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