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Transmission processing method and system of control information from base station to relay node

A technology of relay node and control information, applied in the directions of multi-frequency code system, orthogonal multiplexing system, multiplexing communication, etc., can solve practical application inconvenience, unable to receive eNodeB control information, unable to correctly receive eNodeB Control information and other issues to achieve the effect of simple structure and mapping method and ensuring backward compatibility

Inactive Publication Date: 2010-11-24
ZTE CORP
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Problems solved by technology

That is to say, since the RN first transmits control information to its subordinate UEs in the first 1 or 2 OFDM symbols in the downlink, while the eNodeB transmits control information to the UE directly in the first 1, or 2, or 3, or 4 OFDM symbols. Transmit control information, so the RN cannot receive control information for the eNodeB to RN link within the first 1 or 2 OFDM symbols
[0011] At present, the research on MBSFN subframe as relay subframe is a hotspot, but the physical downlink control channel (R-PDCCH, Relay link-PhysicalDownlink Control Channel) and the mapping method of eNodeB to RN link are still blank, which leads to the inability of RN to receive correctly Control information from eNodeB brings inconvenience to practical application

Method used

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  • Transmission processing method and system of control information from base station to relay node
  • Transmission processing method and system of control information from base station to relay node
  • Transmission processing method and system of control information from base station to relay node

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Embodiment Construction

[0054] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0055] A control information transmission processing method from a base station to a relay node provided by the present invention, such as figure 1 As shown, it mainly includes the following steps:

[0056] Step 101, the eNodeB carries its control information to the RN through at least one of resource block bearing, OFDM symbol bearing and frequency resource bearing.

[0057] Such as figure 2 As shown, the so-called resource block refers to all OFDM symbols that occupy several subcarriers (such as 12 subcarriers) in the frequency direction and one time slot or one subframe in the time direction; the so-called frequency resource refers to the concentrated or distributed several subcarriers ( figure 2 shaded indistinctly). The frequency resource bearing in the present invention includes: centralized frequency res...

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Abstract

The invention discloses a transmission processing method of control information from a base station to a relay node. The base station bears control information from the base station to the relay node by adopting at least one mode of resource block bearing, orthogonal frequency division multiplexing (OFDM) symbol bearing and frequency resource bearing; and the relay node receives the control information from a resource block, an OFDM symbol and frequency resources and demodulates corresponding service information according to the control information. The invention also discloses a transmission processing system of control information from the base station to the relay node, provides a mapping mode of a physical downlink control channel (R-PDCCH) from the base station to the relay node link, and realizes that the relay node correctly receives the control information transmission from the base station.

Description

technical field [0001] The present invention relates to a control information transmission technology in a long-term evolution (LTE) system, in particular to a control information transmission processing method and system from a base station to a relay node. Background technique [0002] Since the Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) system adopts two-dimensional data forms of time and frequency, the multiplexing form between the control channel and the traffic channel can be in the time direction and the frequency direction, that is, adopt Time division multiplexing (TDM, Time Division Multiplex) mode and frequency division multiplexing (FDM, Frequency Division Multiplex) mode. The current long-term evolution system (LTE, Long Term Evolution), advanced long-term evolution system (LTE-A, Long Term Evolution Advanced) and advanced international mobile communication (IMT-Advanced, International Mobile Telecommunication A...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04J11/00
Inventor 毕峰袁明梁枫杨瑾吴栓栓袁弋非
Owner ZTE CORP
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