US 9,001,707 B2 · Signal transmission method and frame structure adopted in a TDD system

Abstract

A signal transmission method in a Time Division Duplex (TDD) system is disclosed. The method comprises following steps: within a time length of a half-frame of a radio frame, base station transmits signal on a downlink special time slot, thereafter does not transmit signal on a Guard Period (GP), and then receives signal on an uplink special time slot; all time lengths of other uplink or downlink normal time slots for transmitting signal are equal; the total time length of the downlink special time slot, the guard period and the uplink special time slot is integer times of the time length of an uplink or downlink normal time slot. In addition, a frame structure adopted in the TDD system which corresponds to the method is disclosed. The present invention makes it flexible to set the duration of the GP and it is guaranteed that, even if a synchronization signal adopts power promotion, it will not bring great interference to uplink reception of other base stations; in addition, the utilization efficiency of the system is improved.

Claims22

Dependent claims

A signal transmission method in a TDD system, comprising:

within a time length of a half-frame of a radio frame, a base station transmitting signals in a downlink special time slot, thereafter not transmitting signals in a guard period (GP), and then receiving signals in an uplink special time slot;
all time lengths of other uplink or downlink normal time slots for transmitting signals being equal;
the total time length of the downlink special time slot, the guard period and the uplink special time slot being integer times of the time length of one uplink or downlink normal time slot;
and
wherein the number of the uplink and downlink normal time slots in the half-frame is 4, 5, 6, 8, 10, 11, 12, 13 or and
within the time length of the half-frame base station transmits signals in order in the first downlink normal time slot, in the second downlink normal time slot and in the downlink special time slot, thereafter does not transmit any signal in the GP, and then, receives signals in the uplink special time slot, and receives or transmits signals in the remaining 6 time slots according to uplink and downlink setting and the total time length of the downlink special time slot, the GP and the uplink special time slot is 2 times of the time length of one normal time slot.

3 more elements

A base station for transmitting signals within a structure adopted in a TDD system, in which a radio frame including two half-frames of equal length, wherein each of the half-frames further including one downlink special time slot, one guard period (GP), one uplink special time slot, and a plurality of uplink and downlink normal time slots of equal length, and the total time length of the downlink special time slot, the guard period and the uplink special time slot being integer times of the time length of one uplink or downlink normal time slot;

wherein the base station transmits signals in a downlink special time slot of the frame structure, thereafter no transmitting signals in a guard period of the frame structure, and then receiving signals in an uplink special time slot of the frame structure;
and
wherein the number of the uplink and downlink normal time slots in the half-frame is 4, 5, 6, 8, 10, 11, 12, 13 or 14;
and
the half-frame includes two downlink normal time slots, one downlink special time slot, the GP, one uplink special time slot, and 6 uplink and/or downlink normal time slots in sequence, and the total time length of the downlink special time slot, the GP and the uplink special time slot is 2 times of the time length of one normal time slot.

2 more elements

Dependencies are inferred from the claim text.

Signal transmission method and frame structure adopted in a TDD system

Life of this patent

Signal transmission method and frame structure adopted in a TDD system

Life of this patent

Abstract

Claims22