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Cell access control method and equipment

A cell access, cell technology, applied in access restriction, electrical components, wireless communication, etc., can solve problems such as large complexity, unbalanced component carrier load, and inability to identify non-backward compatible component carriers.

Active Publication Date: 2014-08-06
南通中信计算机技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first solution is to send a synchronization signal different from the backward compatible component carrier on the non-backward compatible component carrier, so that the LTE UE cannot recognize the non-backward compatible component carrier
The second solution is that no synchronization signal is sent on the non-backward compatible component carrier, so that the LTE UE cannot detect the non-backward compatible component carrier
[0007] The first solution needs to design two kinds of synchronization signals for LTE-A UE, which involves a series of physical layer processing and is more complicated
In the second scheme, the work of the non-backward compatible component carriers is completely dependent on the backward compatible component carriers, resulting in load imbalance among the component carriers

Method used

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  • Cell access control method and equipment
  • Cell access control method and equipment
  • Cell access control method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] see figure 1 , this embodiment provides a method for cell access control. For the eNB (Evolved Node B, evolved base station) side, the method includes:

[0069] 101: When the carrier aggregation cell is an asymmetrical carrier aggregation cell, add prohibited access information in the system message of the downlink component carrier, and the added prohibited access information is used to indicate the enhanced long-term evolution system LTE-A user equipment UE that the carrier aggregation whether the cell is available or whether the downlink component carrier is available;

[0070] 102: Broadcast the system message.

[0071] Correspondingly, see figure 2 , for the UE side, the method includes:

[0072] 201: When the carrier aggregation cell is an asymmetrical carrier aggregation cell, obtain the access prohibition information added in the system message of the downlink component carrier, and the additional access prohibition information is used to indicate the carrie...

Embodiment 2

[0076] see image 3 , this embodiment provides a method for cell access control, and for the eNB side, the method includes:

[0077] 301: For the scheduling information of the system information of the backward compatible component carrier and the non-backward compatible component carrier, use different SI-RNTI (System Information Radio Network Temporary Identifier, system information radio network temporary identifier) ​​to scramble;

[0078] 302: Broadcast the scrambled scheduling information and corresponding system information.

[0079] In addition, this embodiment also provides a method for cell access control. For the eNB side, the method includes:

[0080] Broadcast system information from different frequency points or different locations for backward compatible component carriers and non-backward compatible component carriers

[0081] Correspondingly, see Figure 4 , for the UE side, the method includes:

[0082] 401: Use different SI-RNTIs to descramble the backwa...

Embodiment 3

[0086] In this embodiment, the process of cell access control is performed according to the cell access prohibition information and the additional access prohibition information. The following describes in detail respectively from the eNB (Evolved Node B, evolved base station) side and the UE side.

[0087] On the eNB side, first, set the cell barred information (cell barred) of the non-backward compatible component carrier to barred. The cell barred is used to indicate whether a certain carrier of the LTE UE is available. When the cell barred is barred, the LTE The UE cannot use the component carrier, otherwise, the LTE UE can use the component carrier when cell barred is available. Then, a barred entry information is added to the system message of the downlink component carrier, and the added barred information is used to indicate whether the entire carrier aggregation cell of the LTE-A UE is available (set as CA cell barred), or to indicate that a certain cell of the LTE-A ...

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PUM

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Abstract

A cell access control method and equipment are disclosed, and relate to the field of wireless communication. The method includes the steps of: when a carrier convergence cell is a non-symmetrical carrier convergence cell, obtaining barred information additionally set in a system message of a downlink component carrier, wherein the additionally set barred information is used to indicate a User Equipment (UE) of Long Term Evolution Advanced (LTE-A) whether the carrier convergence cell is available or whether the downlink component carrier is available; and when the additionally set barred information is available, selecting / re-selecting the cell on the downlink component carrier or performing initial access. In the embodiments of the present invention, the UE performs cell access control according to the additionally set barred information by additionally setting the barred information at an Evolved Node B (eNB) side, thus ensuring that UE can be normally operated in the non-symmetrical carrier convergence cell, and realizing the cell access control method with advantages of simpleness, excellent compatibility and load-balanced component carriers.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a cell access control method and equipment. Background technique [0002] In the current LTE (Long Term Evolution, long-term evolution) system, when the UE (User Equipment, user equipment) detects the center frequency of a downlink carrier, it calculates the center frequency of the uplink carrier based on a fixed uplink-downlink interval, and The detected cells are randomly accessed based on system information. [0003] In order to support a peak data rate of up to 1G, LTE-A (Long Term Evolution Advanced enhanced long-term evolution system) uses carrier aggregation technology as a method to expand system bandwidth and supports asymmetric carrier aggregation technology. [0004] However, in the asymmetric carrier aggregation technology, generally, the number of DL CCs (Downlink Component Carriers, downlink component carriers) is more than that of UL CCs (Uplink Compo...

Claims

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Application Information

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IPC IPC(8): H04W74/00
CPCH04W74/006H04W48/08
Inventor 常俊仁宋巍巍李亚娟冯淑兰于映辉
Owner 南通中信计算机技术有限公司