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Cell reselection method and device based on home NB cell

A technology for home base station and cell reselection, applied in wireless communication, electrical components, etc., can solve the problems of no longer considering reselection, not considering home base station cells, etc.

Inactive Publication Date: 2010-09-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] 4. When there are one or more different frequencies among the different frequencies, and have all the parameters based on priority reselection, then use the priority-based reselection method for these different frequencies, and use the priority-based reselection method for other different frequencies. no longer consider reelection
[0023] The principle of cell reselection above does not take into account the participation of the home base station cell. In fact, if the UE can use the home base station cell for communication, it will save the UE user's communication charges and also share a lot of burden for the existing communication network. Therefore, during the cell reselection process, when there is a home base station cell participating, the UE should camp on the home base station cell as much as possible

Method used

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  • Cell reselection method and device based on home NB cell
  • Cell reselection method and device based on home NB cell
  • Cell reselection method and device based on home NB cell

Examples

Experimental program
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Embodiment 1

[0099] The UE camps on the macro cell M_a1 of the carrier frequency A, and obtains the macro neighbor cells M_b1 and M_b2 on the carrier frequency B, the macro neighbor cell M_c1 and the CSG neighbor cell H_c2 on the carrier frequency C through a broadcast message, and the CSG dedicated carrier frequency CSG cells H_d1, H_d2. Among them, H_c2 and H_d1 are both CSG cells where the UE can camp, that is, the UE has the right to camp on H_c2 and H_d1 or both H_c2 and H_d1 are open.

Embodiment 11

[0101] When the UE measures that the CSG cell H_c2 on the carrier frequency C is the best cell or the measurement level is the strongest among the neighboring cells on the carrier frequency C, that is, R H_c2 > R M_c1 or Q H_c2 >Q M_c1 , and it is a suitable cell, and the Thresh of carrier frequency C can be obtained through the system broadcast message C，high , to reselect a cell in the priority-based reselection mode, the UE will consider carrier C as the highest priority, no matter what its original priority is. According to "Condition 1" in "Priority-Based Reselection Method" in "Background Technology", when the cell H_c2 meets the cell selection level Srxlev in the time of Treselection H_c2，C > Thresh C，high Then the UE reselects to the cell H_c2.

Embodiment 12

[0103] When the UE measures that the CSG cell H_c2 on the carrier frequency C is the best cell among the neighboring cells on the carrier frequency C or the measurement level is the strongest, that is, R H_c2 > R M_c1 or Q H_c2 >Q M_c1 , and it is a suitable cell, if the Thresh cannot be obtained through the system broadcast C，high When , the UE can use the default value Thresh CSG_default，high , where ThreshCSG_default，high The value is the value configured in the UE before the UE leaves the factory, or the system notifies the UE through broadcast information when the UE is turned on, and the UE stores the Thresh CSG_default，high value. In this way, if the UE reselects a cell in a priority-based reselection manner, it will consider carrier C as the highest priority, no matter what its original priority is. According to "Condition 1" in "Priority-Based Reselection Method" in "Background Technology", when the cell H_c2 meets the cell selection level Srxlev in the time of T...

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Abstract

The invention discloses a cell reselection method based on home NB cell. The method comprises the following steps: when a user terminal resides in a macro-cell, the pilot frequency neighboring femtocell of a neighbor cell is determined to be a proper cell and the neighbor cell under the carrier frequency is the best cell or the cell with strongest measuring level, the carrier frequency of the pilot frequency neighboring home NB cell is referred to as the carrier frequency with the highest priority to reselect the neighbor cell based on priority reselection; or when the pilot frequency neighboring home NB cell in the user terminal is a proper cell and the neighbor cell in the carrier frequency is the best cell or the cell with strongest measuring level, reselection is performed to the pilot frequency neighboring home NB cell. The invention also discloses a device for realizing the method of the invention. The method and device of the invention are easy to realize and practical.

Description

technical field [0001] The present invention relates to a cell reselection technology, in particular to a cell reselection method and device based on a home base station cell. Background technique [0002] In the construction of modern wireless network systems, indoor coverage has become the top priority of network construction. On the one hand, a suitable indoor coverage solution can maximize the role of the network and create greater value for operators. It can greatly save the operator's network construction cost, and truly realize low investment and high return. At present, more and more multinational operators hope to provide a one-stop wireless access solution. This wireless access device can provide various wireless access functions. When users use the device at home, the operator A tariff discount can be provided, and based on such a demand, a wireless access device called a home base station (Home NB or Home eNB) is proposed. As a creative local hotspot access sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/04H04W36/08H04W36/30
Inventor 黄亚达杜忠达
Owner ZTE CORP
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