Method and system for sending and transmitting control information to relay station by base station

A technology of control information and resource control information, which is applied in the field of sending control information from base stations to relay stations and transmitting control information. It can solve the problems of less research on downlink control channel structure, and achieve backward compatibility and simple control channel structure. Effect

CN101790224AInactive Publication Date: 2010-07-28ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-07-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for sending control information to a relay station by a base station. The method comprises the following steps of: sending control information to the relay station within the range covered by the base station by the base station through a physical downlink sharing channel (PDSCH) resource block in a frequency division multiplexing way, while preappointing the attribute information of the occupied block by the base station and the relay station or sending to the relay station by the base station, wherein the attribute information of the occupied block comprises the quantity, position and allocation mode of the resource blocks. The method for transmitting the control information also comprises the following steps of monitoring the control information on the corresponding PDSCH resource block by the relay station according to the preappointed or received attribute information, and executing the corresponding operation according to the monitored control information. The system for transmitting the control information comprises the base station and the relay station within the range covered by the base station, wherein the base station comprises a resource allocating module and an information sending module, and the relay station comprises an information receiving module and an executing module. By adopting the invention, the backward compatibility can be ensured and the frequency diversity gain is obtained.
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Description

technical field

[0001] The present invention relates to mobile communication technology, in particular to a method and system for delivering control information and transmitting control information from a base station to a relay station. Background technique

[0002] In the OFDM (Orthogonal Frequency Division Multiplexing) system, due to the time-frequency two-dimensional data form, the control channel and the traffic channel can be multiplexed in the time direction or in the frequency direction, namely A TDM (Time Division Multiplex, time division multiplexing) mode and an FDM (Frequency Division Multiplex, frequency division multiplexing) mode are adopted.

[0003] LTE (Long Term Evolution, long-term evolution) system, LTE-A (Long Term Evolution-Advanced, advanced long-term evolution) system, IMT-Advanced (International MobileTelecommunications-Advanced, advanced international mobile communication) system are all based on OFDM technology . In the OFDM system, in order to...

Examples

example 1

[0068] The base station sends control information to multiple UEs within its coverage area through the first 3 OFDM symbols of the subframe, that is, PDCCH, and sends control information to relay stations within its coverage area through PDSCH resource blocks, and transmits control information to relay stations within its coverage area through the first 3 OFDM symbols of the subframe. One or more PDSCH resource blocks bear information about the quantity, location and allocation mode of the occupied PDSCH resource blocks.

[0069] After the relay station monitors the number, location and allocation mode information of the above-mentioned occupied PDSCH resource blocks on one or more PDSCH resource blocks agreed upon by it and the base station, it monitors the control information carried on the corresponding PDSCH resource blocks according to the information. If the uplink scheduling authorization control information of the relay station is monitored on the corresponding PDSCH re...

example 2

[0071] The base station sends control information to the relay station within its coverage area through the PDSCH resource block, and sends control information and the above-mentioned occupied PDSCH resource block quantity, Location and distribution information.

[0072] After the relay station monitors the information on the number, location and allocation mode of the occupied PDSCH resource blocks on the PDCCH, it monitors the control information carried on the corresponding PDSCH resource blocks according to the information. If the uplink scheduling authorization control information of the relay station is monitored, the relay station demodulates the corresponding service information according to the control information; if the base station is detected to inform the relay station that the resource control information can be used, resource allocation is performed according to the control information; if the base station is detected Notifying the control information of the te...

example 3

[0074] The base station sends control information and uplink scheduling authorization control information of the relay station to multiple UEs within its coverage area through the first 3 OFDM symbols of the subframe, that is, the PDCCH, while other control information that needs to be sent to the relay station is carried by the PDSCH resource block. The information about the quantity, location and allocation mode of the occupied PDSCH resource blocks is carried by one or more PDSCH resource blocks agreed by the base station and the relay station.

[0075] After the relay station monitors the uplink scheduling authorization control information of the relay station on the PDCCH, it demodulates the corresponding service information according to the control information; it monitors the number of occupied PDSCH resource blocks on one or more PDSCH resource blocks agreed with the base station After receiving the information of location and allocation mode, the control information ca...