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Method for counting and reporting number of adjacent districts in virtual active set

A technology of adjacent cells and adjacent cells, which is applied in the high-speed uplink packet access system to count and report the number of adjacent cells in the virtual activation set. Controlling the Effects of Uplink Interference

Inactive Publication Date: 2012-04-18
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the Node B cannot know the path loss between the UE and other cells, it cannot accurately know the interference of the UE to other adjacent cells, and how many adjacent cells suffer from large interference, so it cannot accurately control the UE. UE interference to other neighboring cells

Method used

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  • Method for counting and reporting number of adjacent districts in virtual active set
  • Method for counting and reporting number of adjacent districts in virtual active set

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Example 1: In this example, the number of neighboring cells in the virtual active set is reported when RRC (Radio Resources Control, radio resource control) is established. The following describes this example in detail.

[0034] 1. The RNC on the network side sets a path loss difference threshold value for the UE when establishing the RRC, and the threshold value can be expressed as VirActiveSet_Th.

[0035] In practical applications, the setting of the threshold value can be set according to the actual usage environment of the UE such as the density of the urban area and the number of adjacent cells. Specifically, a simulation model of the UE usage environment can be made. According to the simulation model The measured result sets the corresponding threshold value.

[0036] When setting the path loss difference threshold value for the UE, specifically, a path loss difference threshold value VirActiveSet_Th may be added to the RRC CONNECTIONSETUP (RRC connection setup)...

example 2

[0049] Example 2: The core idea of ​​this example is to periodically measure and report the number of virtual active sets.

[0050]1~4 steps among the example 2 are identical with embodiment 1, and step 5 is as follows:

[0051] 5. UE periodic measurement, and periodically report the number of virtual active sets to RNC;

[0052] 6. The RNC notifies the Node B of the VirActiveSet_N through the Iub interface, and the Node B performs power authorization on the UE according to the number of adjacent cells in the virtual active set, and controls the interference within the allowed range.

example 3

[0053] Example 3: The core idea of ​​this example is to report the virtual active set by extending the SI (scheduling information, scheduling information) that the UE directly sends to the Node B.

[0054] Steps 1 to 4 in Example 3 are identical to those of Example 1, and Steps 5 and 6 are as follows:

[0055] 5. Extend the content of the existing SI as follows:

[0056] SNPL

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Abstract

The invention discloses a method for counting and reporting the number of adjacent districts in a virtual active set, which is applied to a high-speed uplink grouping access system. The method comprisThe invention discloses a method for counting and reporting the number of adjacent districts in a virtual active set, which is applied to a high-speed uplink grouping access system. The method comprises the following steps that the network side arranges a path loss difference threshold value for user equipment; the user equipment obtains the path loss of the district and adjacent districts by meases the following steps that the network side arranges a path loss difference threshold value for user equipment; the user equipment obtains the path loss of the district and adjacent districts by measurement, and calculates the path loss difference between the district and adjacent districts; the user equipment counts the number of the adjacent districts with the difference being less than the paturement, and calculates the path loss difference between the district and adjacent districts; the user equipment counts the number of the adjacent districts with the difference being less than the path loss threshold value, takes the number of the districts as the number of adjacent districts in the virtual active set and reports the number to the network side. The method carries out the interfereh loss threshold value, takes the number of the districts as the number of adjacent districts in the virtual active set and reports the number to the network side. The method carries out the interference control by adopting the method of the virtual active set, counts and reports the number of adjacent districts in the virtual active set, can effectively realize the counting and reporting of the nnce control by adopting the method of the virtual active set, counts and reports the number of adjacent districts in the virtual active set, can effectively realize the counting and reporting of the number of adjacent districts in the virtual active set, and can effectively control uplink interference by combining with the interference control method.umber of adjacent districts in the virtual active set, and can effectively control uplink interference by combining with the interference control method.

Description

technical field [0001] The invention relates to the field of wireless communication systems, in particular to a method for counting and reporting the number of neighboring cells in a virtual active set when a virtual active set is introduced in a high-speed uplink packet access system. Background technique [0002] In the third-generation mobile communication system, in order to provide higher-speed uplink packet services and improve spectrum utilization efficiency, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) in TD-SCDMA (Time Division Synchronous Code Division Multiple Access Introduced in the specification of the system is the high speed uplink packet access (High Speed ​​Uplink Packet Access, HSUPA) feature, that is, the uplink enhanced feature. [0003] The HSUPA system is also called an uplink enhancement system, or E-DCH system for short. In order to control the uplink interference of UE (User Equipment, user equipment), NodeB (Node B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W52/24
Inventor 孙慧霞夏中英殷玮玮李萍陈慧张银成孙小薇刘虎
Owner ZTE CORP