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Automatic Guard Period Adjustment for Time Division Duplex Wireless Communications in Base Stations

A technology of protection period and base station, which is applied in the direction of transmission control/equalization, etc., and can solve problems such as inability to guarantee the protection period and reconfiguration

Inactive Publication Date: 2017-03-22
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through manual configuration of the protection period, there is no guarantee that the selected protection period is optimal
Additionally, when interference conditions and / or cell coverage changes, guard period reconfiguration may be required, which imposes additional effort and time on the system designer

Method used

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  • Automatic Guard Period Adjustment for Time Division Duplex Wireless Communications in Base Stations
  • Automatic Guard Period Adjustment for Time Division Duplex Wireless Communications in Base Stations
  • Automatic Guard Period Adjustment for Time Division Duplex Wireless Communications in Base Stations

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Embodiment Construction

[0032] In the following, preferred embodiments of the present invention will be described with reference to the accompanying drawings. It is noted that the following description contains examples for better understanding of the concepts but should not be considered as limiting the invention.

[0033] figure 1 With respect to timeline 5, the frame structure for a TDD cellular system is shown from the perspective of a base station BS and from a user equipment UE. The frame structure 1 includes a downlink frame 2, a guard period 3, and an uplink frame 4 separated by a boundary. During downlink frame 2, the base station BSX transmits data to the user equipment UEX. During the downlink frame 4, the base station BSX receives data from the user equipment UEX. During the protection period 3, the base station BSX neither transmits data to nor receives data from the user equipment UEX.

[0034] The user equipment UEX receives the data transmitted in the downlink frame 2 during the d...

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Abstract

The present invention is directed to a method for adjusting a guard period in a base station for a cellular wireless communication system. The base station is adapted to communicate in a frame structure comprising a downlink frame followed by the guard period followed by an uplink frame. The method comprises the following steps: measuring interference in dependence on time from at least one interfering base station; and adjusting an uplink frame start time within the frame structure in dependence on the measured interference. The invention also relates to a base station, a network management entity, a computer program product and a method for operating the network entity.

Description

technical field [0001] The invention relates to a method for adjusting the protection period in a base station for a cellular radio communication system. The invention also relates to a method for operating a network management entity, a base station for a cellular radio communication system, a network management entity and a computer program product. Background technique [0002] Time Division Duplex (TDD) wireless networks, such as Long Term Evolution TDD networks (LTE TDD), use guard periods (GP) between downlink (DL) and uplink (UL) transmission periods. In LTE, transmissions are subdivided into radio frames (10ms) and subframes (1ms). In TDD mode, subframes are dedicated to UL transmissions, DL transmissions, or subframes are used for transitions from DL to UL. In the latter case, the subframe is called a special subframe, and it starts with a part called DwPTS (Downlink Pilot Time Slot), which is used for downlink transmissions. The DwPTS is followed by a guard peri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
Inventor 甘剑松C.霍伊曼刘愔
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD