Information updating method and main service cell for CoMP system

A primary serving cell and system information technology, applied in the field of communication, can solve problems such as increasing the interaction between cooperative UEs and the network side, affecting the efficiency of cooperative cell selection, and unreasonable timing for sending system information, so as to improve system throughput and solve Unreasonable delivery timing, reducing the effect of information interaction

Active Publication Date: 2012-12-26
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the cooperative cell selection is based on the UE side, the timing of sending system information in the existing CoMP system is not very reasonable, which makes the CoMP system information of the cooperative users frequently updated, increases the interaction between the cooperative UE and the network side, and affects the cooperative cell selection efficiency

Method used

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  • Information updating method and main service cell for CoMP system
  • Information updating method and main service cell for CoMP system
  • Information updating method and main service cell for CoMP system

Examples

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Embodiment 1

[0033] figure 2 is a flowchart of a method for updating CoMP system information according to Embodiment 1 of the present invention, as shown in figure 2 shown, including the following steps:

[0034] In step S202, the primary serving cell updates its saved CoMP system information according to the change of the attribute of the coordinated cell, wherein the attribute of the coordinated cell includes the load status of the coordinated cell and / or the service type supported by the coordinated cell.

[0035] Step S204, the primary serving cell sends a CoMP system broadcast message to the coordinated UE.

[0036] In step S206, the coordinated UE updates its saved CoMP system information according to the broadcast message.

[0037] In this embodiment, the cooperative UE is notified to update the CoMP system information according to the change of the attribute of the coordinated cell, thereby solving the problem of unreasonable delivery timing of the system information in the exi...

Embodiment 2

[0043] image 3 It is a flowchart of a method for updating CoMP system information according to Embodiment 2 of the present invention. Such as image 3 shown, including the following steps:

[0044] Step S302, initial system broadcast delivery.

[0045] When there is no UE in the CoMP coordination area, the system broadcast message sent by the serving cell will be non-CoMP system information. At this time, the system information element is the same as the LTE system information element, and the delivery method and update method are also the same as the existing LTE system. When the UE enters the CoMP cooperation area or the UE accesses the CoMP cooperation main serving cell, the system can select the cooperating user at this time, the system broadcast message sent by the main serving cell will be the CoMP system information, and the UE will update the saved system information to the CoMP system Information, enter the CoMP system processing mode.

[0046] In step S304, the ...

Embodiment 3

[0060] Figure 4 It is an interaction diagram of delivering broadcast information in a non-CoMP system according to Embodiment 3 of the present invention.

[0061] When there is no UE in the CoMP coordination area, the system broadcast message sent by the serving cell will be non-CoMP system information (LTE system information). Same as LTE system. The UE is in the non-CoMP system working mode (LTE system working mode), and the CoMP system broadcast message will be updated with the CoMP system information in time as the cooperating users reside in the CoMP cooperation area.

[0062] For the interactive steps of this embodiment, see Figure 4 S402-S416, because they are the same as the existing LTE system, will not be described in detail here.

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Abstract

The invention provides an information updating method and a main service cell for a CoMP (Cooperative Multi-Point) system. The information updating method for a CoMP system comprises the following steps: information of a CoMP system, stored by a main service cell, is updated by the main service cell according to the change of the attribute of a cooperative cell, wherein the attribute of the cooperative cell comprises the load status of the cooperative cell and / or the type of the service supported by the cooperative cell; a broadcast message of a CoMP system is sent to cooperative UE (User Equipment) by the main service cell; and the information of the CoMP system, stored by the cooperative UE, is updated by the cooperative UE according to the broadcast message. According to the invention, the cooperative UE is notified to update the information of the CoMP system according to the change of the attribute of the cooperative cell, so as to solve the problem that the sending time of the system information in the current CoMP system is unreasonable, so that the information interaction between the cooperative UE and the network side is reduced and the handling capacity of the system is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for updating CoMP (Cooperative Multi-Point, coordinated multi-point) system information and a primary serving cell. Background technique [0002] After the introduction of CoMP transmission technology in LTE_A (Long Term Evolution Advanced, Advanced Long Term Evolution), the selection of cooperative cells can be determined by the network side or intelligently selected on the UE side. The idea of ​​selecting a set of cooperative cells based on UE intelligent association is: service The cell collects the load status information of all neighboring cells and the business information that the neighboring cell can support. Broadcast information to obtain the load and supportable business information of each neighboring cell, and the cooperative users queue up the priority of each neighboring cell according to the load information, and obtain a priority queue of the load statu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16
CPCH04J11/0053H04W28/16
Inventor 向浩求
Owner ZTE CORP
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