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Transmitting method, transmitting system, network side device and receiving side device for controlling channels

A technology of network side equipment and control channel, applied in the direction of diversity/multi-antenna system, space transmit diversity, etc., can solve the problem of no proposed control channel transmission method, etc.

Active Publication Date: 2013-02-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the current time-domain PDCCH method, this problem cannot be solved through space division, and considering the backward compatibility of R8 and R9, the control channel method of time-domain PDCCH must be retained. How to use it at this time? Spatial separation technology to solve the interference between control channels needs to be studied carefully
[0010] In order to obtain a better space separation effect, increase the capacity of the system PDCCH, reduce the impact of ePDCCH on the PDSCH area, and improve the scheduling flexibility of the system, it is necessary to consider the multi-port transmission of ePDCCH. However, no related control channel transmission method has been proposed so far.

Method used

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  • Transmitting method, transmitting system, network side device and receiving side device for controlling channels
  • Transmitting method, transmitting system, network side device and receiving side device for controlling channels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] The network side sends ePDCCH information to the receiving side in the PDSCH area, and the network side can use multiple ports to send ePDCCH information to the receiving side, for example, antenna ports 7 and 8 can be used to send ePDCCH to the receiving side.

[0104]The receiving side obtains ePDCCH information by blindly detecting the ePDCCH port in the PDSCH area. The blind detection process can be described as follows:

[0105] The UE receives ePDCCH information in the PDSCH area, and then blindly detects all possible ports in sequence. For example, it can be assumed that ePDCCH is sent on port 7, then the receiving side first receives ePDCCH information according to port 7, and then uses the C-RNTI on the receiving side to detect The CRC of the received information is detected. If the CRC check result is 1, the receiving side switches to another possible port. Assume that the ePDCCH is sent on this port. For example, if it is sent on port 8, then perform blind det...

Embodiment 2

[0107] The network side sends ePDCCH information to the receiving side in the PDSCH area, and the network side can use multiple ports to send ePDCCH information to the receiving side, for example, antenna ports 7 and 8 can be used to send ePDCCH to the receiving side.

[0108] The receiving side determines the sending port of the ePDCCH by receiving or blindly detecting primary control information in the PDCCH region or the PDSCH region.

[0109] The primary control information of the PDCCH area or the PDSCH area contains the port-related information of the ePDCCH. For example, this primary control information can contain 1 or 2 bits to indicate the port 7 or port 8 or port used by the ePDCCH on the receiving side. 7, 8. If ePDCCH is limited to only one layer of transmission, then only 1 bit is required for notification; if ePDCCH is limited to maximum two layers of transmission, then only 2 bits are required for notification.

Embodiment 3

[0111] The network side sends ePDCCH information to the receiving side in the PDSCH area, and the network side can use multiple ports to send ePDCCH information to the receiving side, for example, antenna ports 7 and 8 can be used to send ePDCCH to the receiving side. The network side notifies the receiving side of the port number used by the ePDCCH sent by it through RRC signaling. The receiving side determines the port number used by the ePDCCH through the received RRC signaling, and then uses the port to perform blind detection or reception of the ePDCCH.

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Abstract

The invention discloses a transmitting method for controlling channels. The method comprises that a network side device uses at least one port to send e physical downlink shared channel (PDCCH) information in a PDSCH region, and a receiving side device receives relative ePDCCH information from a sending port of the ePDCCH. The invention also discloses a transmitting system, the network side device and the receiving side device for controlling channels. Accordingly, good space diversity gain can be obtained for the transmission of the ePDCCH, the PDCCH capacity of the system is improved, the effect of the ePDCCH on the PDSCH region is reduced and the scheduling flexibility of the system is improved.

Description

technical field [0001] The present invention relates to a long term evolution advanced system (Long term evolution advanced system, LTE-Advanced), in particular to a control channel transmission method, system, network side equipment, and receiving side equipment. Background technique [0002] In LTE Release8 / 9, in order to measure the quality of the channel and demodulate the received data symbols, a common reference signal (Common Reference Signal, CRS) is designed, and the user equipment (User Equipment, UE) can perform channel monitoring through the CRS Measurement, so as to determine the UE to perform cell reselection and handover to the target cell, and perform channel quality measurement in the UE connection state. When the interference level is high, the physical layer can disconnect the connection through high-level related wireless link connection failure signaling . In LTE R10, in order to further improve the average spectrum utilization rate of the cell, the spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08
Inventor 郭森宝孙云锋陈艺戬戴博
Owner ZTE CORP
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