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Configuration method of cyclic prefix, base station and terminal

A configuration method and cyclic prefix technology, applied in network traffic/resource management, digital transmission systems, electrical components, etc., can solve problems such as reduced data transmission efficiency and waste of system resources, and achieve the effect of saving system resources and improving transmission efficiency

Active Publication Date: 2010-07-28
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the data transmission efficiency per unit time in the case of extended CP is lower than that of conventional CP, and not all terminals need to use coordinated multi-point or relay transmission, for terminals using common transmission methods, the configuration of this CP way is obviously a waste of system resources

Method used

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  • Configuration method of cyclic prefix, base station and terminal
  • Configuration method of cyclic prefix, base station and terminal
  • Configuration method of cyclic prefix, base station and terminal

Examples

Experimental program
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Embodiment 1

[0025] Embodiment 1. The base station configures the CP length of each subframe in each period according to a fixed configuration criterion, and notifies the terminal of the CP length configuration information of each subframe in advance through a high-level signal. Correspondingly, the terminal obtains the CP length configuration information of each subframe from the high-level signal, determines the subframe corresponding to the scheduling information of the terminal from the scheduling signaling, and determines the CP length configuration of the subframe corresponding to the scheduling information of the terminal information, and perform data transmission on the subframe corresponding to the scheduling information according to the determined CP length configuration information.

[0026] In this embodiment, the base station configures the CP length of each subframe in each period in a static configuration manner, wherein one radio frame may be used as a period, or several rad...

Embodiment 2

[0032] Embodiment 2, when the base station schedules the transmission resources of the terminal, the scheduling signaling carries the CP length configuration information of the subframe indicated by the scheduling information. Correspondingly, the terminal obtains the scheduling information of the terminal from the scheduling signaling, and obtains the CP length configuration information of the subframe indicated by the scheduling information, and performs data allocation on the subframe indicated by the scheduling information according to the determined CP length configuration information transmission.

[0033] The base station can schedule terminals that need to support coordinated multi-point or relay transmission on the same subframe as much as possible according to the actual needs of each terminal, and configure these subframes as extended CPs. The CP length configuration for each subframe may also be performed separately for the downlink direction and the uplink direction...

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Abstract

The invention provides a configuration method of a cyclic prefix (CP), a base station and a terminal, wherein the method comprises the steps of respectively configuring the CP length of each subframe by the base station, dispatching the terminal in need of the first CP length at the subframe which is configured with the first CP length and dispatching the terminal in need of the second CP length at the subframe which is configured with the second CP length according to the transmission requirement of the terminal. The invention provides a method for flexibly configuring the CP length, not allthe uplink or downlink subframes are necessarily configured to extended CP by using the method for the terminal which supports the multipoint cooperation or relay transmission, however the subframe is respectively configured, part of the subframes are configured to extended CP, the terminal which supports the multipoint cooperation or relay transmission is dispatched on the subframe which is configured with the extended CP, and the terminal is dispatched on the subframe which is configured with the conventional CP by using the common transmission mode, thereby improving the transmission efficiency of the system and saving the resources of the system.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method for configuring a cyclic prefix (CP), a base station and a terminal. Background technique [0002] In the Long Term Evolution-Enhanced (LTE-A) system, due to the adoption of technologies such as Coordinated Multi-Point (COMP) and Relay (Relay), multiple service points can serve a terminal at the same time, thereby improving the uplink and downlink throughput. , the service point may be a base station or a relay device of a cell. However, since multiple service points are distributed in different geographical locations, the transmission distances between them and the terminal are different, so there will be a large deviation in the time when the signals sent by multiple service points in the downlink direction arrive at the same terminal, or In the uplink direction, there is a big time difference when multiple service points receive the sending signa...

Claims

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Application Information

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IPC IPC(8): H04W28/20H04W72/04H04W88/02H04W88/08H04L1/00H04L27/26
Inventor 潘学明肖国军丁昱索士强
Owner DATANG MOBILE COMM EQUIP CO LTD
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