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Method and device for transmitting system message

A system message, transmission system technology, applied in transmission systems, digital transmission systems, selection devices, etc., can solve the problems of reduced cell capacity and throughput, inability to make full use of frequency resources and base station transmit power resources, etc., to improve cell capacity. and throughput, power saving effect

Active Publication Date: 2007-07-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the BCH channel has a fixed format, and being fixed means that frequency resources and base station transmission power resources cannot be fully utilized, which eventually leads to a decline in cell capacity and throughput

Method used

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  • Method and device for transmitting system message
  • Method and device for transmitting system message
  • Method and device for transmitting system message

Examples

Experimental program
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Effect test

Embodiment 1

[0062] In this embodiment, since the DL-SCH demodulation physical signaling is carried by the BCH data block with a fixed format, in order to complete the method described in this embodiment, it is necessary to pre-set the BCH data block carrying the demodulation physical signaling. format so that the UE can normally process the received BCH data block.

[0063] The process of the base station sending system messages is shown in Figure 2, and the details are as follows:

[0064] Step 201: the base station maps the system information carried by the BCCH channel to the two transmission channels of the BCH channel and the DL-SCH channel respectively.

[0065] Step 202: The base station obtains the demodulated physical signaling of the DL-SCH data block carrying the system information through media access control (Media Access Control) MAC layer scheduling.

[0066] Since the DL-SCH channel is a shared channel, the information carried on the DL-SCH channel is not only BCCH channe...

Embodiment 2

[0120] In this embodiment, the method of carrying the DL-SCH data block demodulation physical signaling in the BCH data block is not adopted; instead, the existing physical layer signaling channel in the LTE system is used to carry the DL-SCH data block demodulation Physical signaling, such as the shared downlink control channel SDCCH, or other channels that can carry physical layer signaling. The physical layer signaling channel provides control information for the physical layer channel Shared Data Channel (SDCH) of DL-SCH, and this channel is multicast. The function of the physical layer signaling channel described in this text is similar to the high-speed shared control channel (HS-SCCH) in HSDPA.

[0121] In this case, the UE must first monitor and read the physical layer signaling channel to obtain the DL-SCH data block carried therein to demodulate the physical signaling, and then read the DL-SCH data block according to the demodulated physical signaling.

[0122] The ...

Embodiment 3

[0142] In the case of using the physical layer signaling channel to carry the DL-SCH channel demodulation physical signaling, there is always a certain time between the physical layer signaling data block and the BCH data block carrying the DL-SCH channel demodulation physical signaling gap. After the UE reads the BCH data block, in order to obtain the required DL-SCH channel to demodulate the physical signaling, it must always monitor the physical layer signaling channel. This process consumes a lot of power, especially for the UE in idle mode.

[0143] In order to solve this problem, this embodiment adds an activation time to the BCH data block, which is used to instruct the UE to read the physical layer signaling channel data block carrying the DL-SCH channel demodulation physical signaling after reading the BCH channel time. After the UE reads the BCH data block, it can enter the sleep mode, which saves the UE from monitoring the physical layer signaling channel and saves...

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Abstract

This invention discloses a method for transmitting system information including: A, a base station maps the system information to BCH and DL-SCH, B, the dispatcher of the base station gets demodulation physical signaling of the DL-SCH channel and transmits the signaling, the BCH data block and the DL-SCH data block loading system information, C, a UE gets the system information and the demodulation physical signaling in the BCH data block and gets the system information loaded in the DL-SCH data block based on the physical signaling. This invention also discloses a device for transmitting system information.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method and device for transmitting system messages. Background technique [0002] Since the 3rd Generation Partnership Project (3GPP) released the first commercial version of Universal Mobile Telecommunications System (UMTS) Realse99, members of the 3GPP organization have continued to improve the network in order to obtain more network features and better network performance. The R5 version released in 2003 introduced High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) and the R6 version released in 2005 introduced High Speed ​​Uplink Packet Access (HSUPA, High Speed ​​Uplink Packet Access). The wireless access performance of the multiple access cellular mobile communication system (WCDMA) has been greatly improved. [0003] For the evolution of the UMTS radio access network (RAN), most equipment manufacturers divide the evolution stage into two...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/22H04L12/58H04W48/12
CPCH04W48/12
Inventor 赵治林蔡涛伏玉笋
Owner HUAWEI TECH CO LTD
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