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System message updating method

A technology of system messages and update methods, applied in advanced technology, network traffic/resource management, electrical components, etc., can solve problems such as battery loss and terminal battery consumption, and achieve the effect of reducing loss

Active Publication Date: 2009-06-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a terminal in DRX mode at the same time, if the sending opportunity of the system message update notification overlaps with the sleep phase, the terminal needs an additional wake-up phase to read the PDCCH and then return to the sleep state. In fact, in most cases , because there is no notification message, this process causes the terminal to consume the battery in vain
[0011] Therefore, for a terminal in DRX mode in the RRC_CONNECTED state, a new system message update mechanism is needed to solve the problem of battery loss caused by unnecessary wake-up of the terminal

Method used

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Examples

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example 1

[0036] Figure 5 A schematic diagram of this example is shown. In this example, the system information has not changed, so the network does not actually send a system information update notification message on a possible system information update notification opportunity. Set the terminal in DRX mode so that it will not wake up during the sleep phase to periodically read the notification message. In fact, this notification message is not included in the nth system message modification cycle / (n+1)th system message modification cycle. Not sent.

[0037] by comparison Figure 4 with Figure 5 it can be discovered, Figure 5 The additional wake-up process is reduced, thereby reducing the consumption of the terminal battery.

example 2

[0039] Image 6 A schematic diagram of this example is shown.

[0040] In this example, it is assumed that the cycle of DRX of the terminal is 2 seconds. The network side modifies the random access channel parameters, that is, a system information update occurs, and sends a system information update notification message on the PDCCH channel in the nth system information modification period. Because the terminal ignores the system message update notification message in the sleep stage, and the wake-up stage is also staggered with the notification message, so the terminal misses all system message update notifications in the nth system message modification cycle.

[0041] In the (n+m)th system message modification period (m>0), when the terminal needs to send a buffer status report through the random access process, because it cannot be confirmed whether the parameters related to random access have changed, so While initiating the random access procedure, the terminal starts t...

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PUM

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Abstract

The invention discloses a system massage update method, which is applied for updating and treating system massage of terminals under the mode of discontinuous reception (DRX) in connected state (RRC_CONNECTED). In the method, the terminals under the mode of discontinuous reception is set to a state system massage updating notification is not received in the sleep stage. The terminals judge whether the system massage needs to be updated through reading system massage identifiers of over one dispatching message blocks of wireless frames when a random access process needs to be promoted, under the condition that the terminals have not received system massage updating notification in the wake up stage. Through utilizing the system massage update method of the invention, battery loss can be reduced, and system massage updating notification will not be missed.

Description

technical field [0001] The present invention relates to a long-term evolution (Long Term Evolution, referred to as LTE) system, in particular, relates to a method for updating system information, which is used for a terminal system in a connected discontinuous reception (Discontinuous Receive, referred to as DRX) mode Message update processing. Background technique [0002] Such as figure 1 As shown, a Long Term Evolution (LTE for short) system is mainly composed of a terminal, a base station, and a core network (Core Network, CN). A network composed of base stations is called a radio access network (Radio Access Network, RAN), and is responsible for access layer affairs, such as management of radio resources. base station (for example, figure 1 There may be a physical or logical connection between the base station 1 and the base station 2 or the base station 3) according to the actual situation. Each base station can be connected to one or more core network nodes. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W72/00
CPCY02D30/70
Inventor 杜忠达
Owner ZTE CORP
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