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Residential quarter switch method

A cell handover and pre-handover technology, applied in electrical components, wireless communication, etc., can solve problems such as unguaranteed user QoS experience, waste of cell channel resources, and failure to consider service characteristics, so as to reduce the waste of reserved resources and reduce signal quality. Reduce overhead and guarantee the effect of QoS experience

Active Publication Date: 2015-04-29
CHONGQING UNIV OF POSTS & TELECOMM
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current serving cell sends a pre-handover preparation message to the pre-handover candidate cell before handover execution, informing the pre-handover candidate cell to reserve resources, thereby effectively reducing the probability of handover failure, but this scheme does not consider how to select the pre-handover candidate cell, which may cause Non-potential handover candidate cells perform pre-handover preparations, resulting in waste of cell channel resources and large signaling overhead
In addition, in the existing research, the selection of the target cell mainly considers the received signal strength of the user, and does not consider the service characteristics after the user switches to the target cell, which may lead to the inability to guarantee the user's QoS experience

Method used

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Embodiment Construction

[0037] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] figure 1 It is a schematic diagram of a heterogeneous cellular network scenario. In the figure, there are 7 low-power cells in a macro cell coverage area, and each low-power cell does not share the frequency band with the macro cell. Among them, cells A, C and F share the frequency band f 1 , cells B, E, and G share the frequency band f 2 , Cell D exclusively enjoys the frequency band f 3 . When the UE is moving, it detects the reference signal received power (RSRP) of the macro cell and the low-power cell. If the UE detects that the handover trigger condition is met and the condition is still met after the trigger time (TTT), execute switch.

[0039] figure 2 It is a flow chart of the cell handover method proposed by the present invention. As shown in the figure, the cell switching method of the present invention is specifica...

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Abstract

The invention relates to a residential quarter switch method, and belongs to the technical field of wireless communication. The method comprises the following steps that UE continuously detects reference signal received power RSRP of a current serviced residential quarter and an adjacent residential quarter, and data smoothing is performed on the RSRP to judge whether the PSRP meets a switch triggering condition or not, if the PSRP meets the switch triggering condition, a time TTT timer is triggered to begin to time and perform step two, otherwise if the PSRP does not meet the switch triggering condition, the RSRP is continued to be detected; when the UE sends a pre-switch request message to the current serviced residential quarter, the current serviced residential quarter determines a UE pre-switch candidate residential quarter set according to the received message; the current serviced residential quarter notices a pre-switch candidate residential quarter to perform pre-switch preparation; if the TTT fails and the switch triggering condition detected by the EU is still met, a switch indication is sent to the current serviced residential quarter; the current serviced residential quarter determines a switch target residential quarter according to a measurement report; the current serviced residential quarter notices the switch target residential quarter to perform switching. The method can effectively reduce ping-pong effect and switching delay, and improve QoS experience of a user.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a cell switching method. Background technique [0002] With the rapid development of wireless communication technology, all kinds of smart terminals are showing explosive growth trend, and rich and diverse data services are also emerging. The high-speed service needs of users pose a severe challenge to traditional cellular networks. Heterogeneous cellular network technology introduces low-power nodes, such as relay sites, picocell sites, and home base stations, within the coverage of traditional macrocells, to strengthen the coverage of specific areas in a targeted manner and form multi-layer network coverage, which can effectively realize User QoS guarantee improves system resource utilization. The network characteristics such as irregular deployment of low-power nodes and large differences in coverage in heterogeneous cellular networks, as well as the different ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08
CPCH04W36/0094H04W36/08
Inventor 柴蓉黄峥陈前斌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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