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Method and system for transmitting public data based on physical downlink shared channel

A technology of physical downlink sharing and public data, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problems of wasting system resources and reducing bandwidth utilization.

Inactive Publication Date: 2011-11-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the content of the system information updated by the SCC is the same, when multiple UEs use the same PCC and SCC, there will be multiple copies of the system information updated by the SCC in the PCC, which are sent to different UEs through dedicated channels of different UEs. UEs, the copies of these updated system information waste system resources and reduce bandwidth utilization

Method used

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  • Method and system for transmitting public data based on physical downlink shared channel
  • Method and system for transmitting public data based on physical downlink shared channel
  • Method and system for transmitting public data based on physical downlink shared channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] On the downlink SCC (DL SCC) where the system information changes, the method of transmitting updated system information based on the physical downlink shared channel, such as Figure 8 As shown, the method includes the following steps:

[0128] Step 801: In MPn, eNB adds MAC header to MAC layer with updated system information to obtain MAC PDU;

[0129] Step 802: For all UEs that need to receive updated system information, the eNB indicates in the corresponding DCI carried on the PDCCH that the allocated resource blocks are used to transmit updated system information, and configures the PDCCH on the DL SCC where the system information changes;

[0130] Specifically, for all UEs that need to receive public data, the eNB carries the corresponding DCI on the PDCCH respectively, and the PRB indicated in each DCI content should be the same, that is, the content used for resource block allocation needs to be consistent, and the MCS, Both NDI and RV need to be consistent, an...

Embodiment 2

[0144] The eNB configures the PDCCH on the DL SCC whose system information has not changed, configures the PDSCH on the DL SCC whose system information has changed, and transmits the updated system information based on the physical downlink shared channel, such as Figure 10 As shown, the method includes the following steps:

[0145] Step S101: In MPn, eNB adds MAC header to MAC layer with updated system information, and obtains MAC PDU;

[0146] Step S102: For all UEs that need to receive updated system information, the eNB indicates in the corresponding DCI carried on the PDCCH that the allocated resource blocks are used to transmit updated system information, and configure the PDCCH on the DL SCC whose system information has not changed ;

[0147] Specifically, for all UEs that need to receive public data, the eNB carries the corresponding DCI on the PDCCH respectively, and the PRB indicated in each DCI content should be the same, that is, the content used for resource blo...

Embodiment 3

[0161] When the UE does not know the MIB and SIB1 / 2 of the DL SCC whose system information has changed, the eNB will configure the PDSCH on the DL SCC whose system information has not changed, and transmit the updated system information based on the physical downlink shared channel, such as Figure 12 As shown, the method includes the following steps:

[0162] Step S201: In MPn, eNB adds MAC header to MAC layer with updated system information to obtain MAC PDU;

[0163] Step S202: For all UEs that need to receive updated system information, the eNB indicates in the corresponding DCI carried on the PDCCH that the allocated resource blocks are used to transmit updated system information;

[0164] Specifically, for all UEs that need to receive public data, the eNB carries the corresponding DCI on the PDCCH respectively, and the PRB indicated in each DCI content should be the same, that is, the content used for resource block allocation needs to be consistent, and the MCS, Both N...

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Abstract

The invention discloses a method for transmitting public data based on a physical downlink shared channel. The method for transmitting the public data comprises the following steps: an evolution type base station (eNB) indicates the allocated resource blocks in corresponding downlink control information (DCI) on a physical downlink control channel (PDCCH) for all user equipment (UE) needing to receive the public data so as to transmit the public data; the eNB transmits the public data through the resource blocks allocated by the DCI on a physical downlink shared channel (PDSCH); and the UE receives the public data from the PDSCH when the resource blocks allocated by the DCI are used for transmitting the public data according to the indications in the DCI. The invention also discloses a system for transmitting the public data based on the PDSCH; and by means of the scheme disclosed by the invention, a large amount of public data of the same content, which are transmitted through special signalings of different UE, is reduced, the copies of special signalings of the same content are reduced, and the system resource is saved.

Description

technical field [0001] The present invention relates to a public data transmission technology in a long-term evolution system or an advanced long-term evolution system, and in particular to a method and system for transmitting public data based on a Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel). Background technique [0002] A cell in Long Term Evolution (LTE, long term evolution) version 8 / 9 can only be configured with one downlink carrier, and system information is sent on the configured downlink carrier, including master information block (MIB, master information block), system information Blocks (SIB, system information block) 1-13, wherein MIB is transmitted on a broadcast transport channel (BCH, broadcast channel), and SIB1 is transmitted on a fixed subframe on a downlink-shared channel (DL-SCH, Downlink-shared channel) , SIB2-13 is scheduled to be sent by the scheduling information located on SIB1, and SIB1 also includes the system informa...

Claims

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Application Information

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IPC IPC(8): H04W28/04H04W28/16H04W72/04H04W72/14
Inventor 王坚戴博黄亚达杜忠达汪孙节
Owner ZTE CORP
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