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Device and method for allocating multi-type ACK/NACK channel

A channel, type technology, applied in the direction of radio/induction link selection arrangement, error prevention/detection using return channel, selection device, etc., can solve the problem of not using L1/L2 control channel transmission format ACK/NACK channel, etc., To achieve the effect of reducing signaling overhead

Inactive Publication Date: 2008-07-23
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The above-mentioned method of indicating the ACK / NACK channel allocated to a specific user equipment does not use the relationship between the transmission format of the L1 / L2 control channel and the allocated ACK / NACK channel, and there may be repeated transmission of information, which is not an optimal indication Method of assigning ACK / NACK channels

Method used

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  • Device and method for allocating multi-type ACK/NACK channel
  • Device and method for allocating multi-type ACK/NACK channel
  • Device and method for allocating multi-type ACK/NACK channel

Examples

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Embodiment

[0057] This section presents four embodiments of the invention. In order to avoid making the description of this patent too lengthy, in the following description, detailed descriptions of functions or devices that are well known to the public are omitted.

no. 1 example

[0059] In this embodiment, it is assumed that the base station schedules uplink data transmission and sends downlink ACK / NACK information based on FDM multiplexing. Assuming that the system configures two types of ACK / NACK channels, the first type is that each ACK / NACK channel contains k subcarriers, which is mainly used for user equipment with better channel conditions; the second type is that each ACK / NACK channel The channel contains 2k subcarriers, which are mainly used for user equipment with poor channel conditions. Here, no distinction is made between the OFDM technology and the SCFDMA technology used. It is assumed that the system configures two transmission formats for the L1 / L2 control signaling, so that the transmission format of the L1 / L2 control signaling corresponds to the type of the ACK / NACK channel one by one. And the base station controls the index information of the ACK / NACK channel allocated to the user equipment in L1 / L2 control signaling.

[0060] Fig...

no. 2 example

[0063] In this embodiment, it is assumed that the base station schedules uplink data transmission and sends downlink ACK / NACK information based on FDM / CDM multiplexing. It is assumed that the system configures two types of ACK / NACK channels, and the two types of ACK / NACK channels are respectively used for user equipments with good channel conditions and user equipments with poor channel conditions. These two types of ACK / NACK channels respectively occupy different time-frequency resources, that is, FDM or FDM / TDM multiplexing manner. Each ACK / NACK channel of the same type is sent on the same time-frequency resource in a CDM multiplexing manner, that is, each ACK / NACK channel corresponds to a codeword. The system numbers ACK / NACK channels of the same type, that is, each index represents a specific codeword. It is assumed that the system configures two transmission formats for the L1 / L2 control signaling, so that the transmission format of the L1 / L2 control signaling correspond...

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Abstract

The invention relates to equipment and a method for a base station to allocate ACK / NACK channels with various types, and the method comprises the following steps: a base station assures user equipment which is currently dispatched and allocates wireless resource, a transformat which is used when a control signal is sent is selected according to channel condition of user equipment which is currently dispatched and sends control signals, the base station assures the types of an ACK / NACK channel which is allocated to user equipment according to the transformat of the control signals to user equipment and assures the ACK / NACK channel which is allocated to the user equipment. Signal cost for indicating ACK / NACK channels with various types is lowered by adopting the method of the invention.

Description

technical field [0001] The present invention relates to a wireless communication system, and more specifically relates to a device and method for allocating multiple types of ACK / NACK channels in the wireless communication system. Background technique [0002] Now, the 3GPP standardization organization has begun to carry out the long-term evolution (LTE) of its existing system specifications. Among the many physical layer transmission technologies, the downlink transmission technology based on Orthogonal Frequency Division Multiplexing (OFDM) and the uplink transmission technology based on Single Carrier Frequency Division Multiple Access (SCFDMA) are research hotspots. OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a group of mutually orthogonal sub-carriers. OFDM technology has performance advantages in man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/36H04L1/18
Inventor 李迎阳张玉建李小强李周镐
Owner BEIJING SAMSUNG TELECOM R&D CENT
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