Device and method for transmitting control signaling

A technology for controlling signaling and control channels, applied in multiplexing communication, communication between multiple stations, space transmit diversity, etc., can solve the problem of lack of a method for mapping control signaling to physical layer time-frequency resources , control signaling coverage and other issues

Inactive Publication Date: 2008-07-16
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, most of the control signaling is only transmitted within one OFDM symbol. Considering the limitation of the maximum transmission power of the base station, limiting the control signaling to one OFDM symbol may cause problems in the coverage of control signaling
In addition, the above method lacks a detailed method for mapping control signaling to physical layer time-frequency resources

Method used

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  • Device and method for transmitting control signaling
  • Device and method for transmitting control signaling
  • Device and method for transmitting control signaling

Examples

Experimental program
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Embodiment

[0135] This section presents three 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

[0137] In this embodiment, the base station uses the first logical resource allocation method of the present invention to map control signaling to physical layer time-frequency resources. Such as Figure 10 As shown, it is assumed that the control signaling is transmitted in the first three OFDM symbols. Specifically, the system transmits common pilots and other information in the first OFDM symbol, and the remaining subcarriers are used to transmit control signaling; All two OFDM symbols are used for control signaling; some subcarriers in the third OFDM are used for control signaling, and other subcarriers are used for user data transmission.

[0138] exist Figure 10 In , the subcarriers used for control signaling in the first and third OFDM symbols are represented as continuous subcarriers, which is for the convenience of drawing. In the actual physical layer configuration, these subcarriers are distributed to the entire bandwidth , which has a better frequency diversity ...

no. 2 example

[0145]In this embodiment, the base station uses the second logical resource allocation method of the present invention to map control signaling to physical layer time-frequency resources. Same as the first embodiment, here it is assumed that the control signaling is transmitted within the first 3 OFDM symbols.

[0146] and Figure 10 same, Figure 12 The subcarriers used for control signaling in the first and third OFDM symbols are represented as continuous subcarriers, which is for the convenience of drawing. In the actual physical layer configuration, these subcarriers are distributed to the entire bandwidth , which has a better frequency diversity effect.

[0147] In this embodiment, it is assumed that the current base station will send 4 control signalings, and they belong to two different types, wherein the first and second control signalings belong to one type, and the number of physical layer time-frequency resources they need relatively few; the third and fourth con...

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Abstract

The invention discloses a device and a method mapping control signaling to physical layer time-frequency resource and transmitting the control signaling; the method comprises the following steps: a base station sends common control signaling to a subscriber and indicates the information such as the physical resource quantity and address occupied by follow-up control signaling; the base station carries out continuous logical numbering of the physical time-frequency resource transmitting the control signaling, and allocates the logical resource to each control signaling in turn; moreover, according to the mapping relation between the logical resource and the physical time-frequency resource, the base station obtains the physical time-frequency resource occupied by each control signaling; finally, the base station transmits the control signaling on the physical time-frequency resource. The invention provides the concrete method through which the control signaling is mapped to the physical layer time-frequency resource and is transmitted, thereby solving the problem of transmitting the control signaling and realizing ideal coverage of the control signaling. Moreover, the method can also be used to divide a control signaling unit.

Description

technical field [0001] The present invention relates to a wireless communication system, and more specifically relates to a device and method for transmitting control signaling in a 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. [0003] According to the existing discussions on LTE, such as figure 1 Shown is the downlink frame structure of the LTE system. The radio resources in the LTE system refer to the time and frequency resources that the system or user equipment can occupy, which can be distinguished by radio frame (101-103). The time length of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/26H04J11/00
Inventor 李迎阳李周镐张玉建李小强
Owner BEIJING SAMSUNG TELECOM R&D CENT
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