TDD OFDMA system ascending control signaling transmission method and device

Abstract

The invention relates to a method for transmitting uplink control signaling of a time-division duplexing orthogonal frequency-division multi-access system and a device, which is a proposed specific technical scheme of separately transmitting the non-data correlation control signaling for long-term evolution time-division duplexing (LTE TDD). A control signaling processing unit reserves a frequency band for an uplink control channel according to the total amount of the uplink control signaling, and configures the reserved frequency band at two sides of the frequency domain occupied by the uplink time slot so as to ensure that the uplink control signaling of a terminal UE is transmitted at the position of the reserved frequency band and on the bandwidth and provides a plurality of schemes for reserving the frequency band position and bandwidth. The transmitting uplink control signaling is transmitted in each reserved uplink control channel in the mode of frequency hopping in the sub-frame. Each terminal UE or a group of UEs corresponds to an FH sequence and a plurality of pilot frequency schemes are provided. In the method, the reserved frequency band is configured aiming at the system working bandwidth and positions of uplink and downlink switching points. The method is characterized by low implementation complexity and also sufficient utilization of resources, the transmission is carried out in the mode of frequency hopping in the sub-frame and the time domain and frequency domain diversity can be simultaneously utilized.

Description

technical field [0001] The present invention relates to mobile communication access technology, more specifically to a transmission method and device for uplink control signaling of an Orthogonal Frequency Division Multiple Access (OFDMA, Orthogonal Frequency Division Multiple Access) system. Background technique [0002] The third-generation mobile communication system (3G) adopts the code division multiple access (CDMA) mode, supports multimedia services, and can have higher competitiveness in the next few years. However, in order to ensure that such competitiveness is maintained in a longer period of time, the 3GPP has initiated a research project on Long Term Evolution (LTE, Long Term Evolution) of 3G radio interface technology. Important parts of the long-term evolution research project include: reducing delay, increasing user data rate, improving system capacity and coverage, and reducing operator's cost. [0003] According to the research progress, it is determined t...

AI Technical Summary

Problems solved by technology

However, the current situation is that there is no scheme for the transmission of the uplink control channel according to the characteristics of the LTE TDD system, that is, there is no specific and feasible design scheme for the control channel when there is no uplink data.

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