Method and system for transmitting uplink reference signal and user equipment
A technology for reference signal and user equipment, applied in transmission systems, multiplexing code allocation, electrical components, etc., can solve problems such as excessive network resource overhead and occupation, and achieve the effect of reducing channel overhead
Active Publication Date: 2013-06-26
北京万海云科技有限公司
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[0005] Further, when the unscheduled E-PUCH is used as the channel of the uplink reference signal, it is also necessary to occupy the hybrid automatic repeat request indicator channel (E-HICH) resource of the enhanced uplink dedicated channel, so the unscheduled E-PUCH is used as the uplink When referring to the channel of the signal, it will further cause excessive overhead of network resources
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[0029] A method for transmitting an uplink reference signal, the method comprising: setting a dedicated channel for the uplink reference signal between a base station and a user equipment, and configuring indexes of mutually orthogonal secondary spreading sequences used by each user equipment in the dedicated channel ; each user equipment generates a second spread spectrum sequence according to the index of the configured second spread spectrum sequence; each user equipment sequentially performs bit scrambling and digital modulation on the second spread spectrum sequence to generate a modulated signal, and then The modulated signal is spread to obtain the uplink reference signal to be transmitted; each user equipment transmits the uplink reference signal to the base station through the dedicated channel.
[0030] In the present invention, since the secondary spreading sequences generated by the user equipment are configured, the secondary spreading sequences generated by differ...
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The invention discloses a method and a system for transmitting an uplink reference signal and user equipment. The method comprises the following steps of: a specific channel for the uplink reference signal is set between a base station and the user equipment, and an index of orthogonal spread spectrum sequences each user equipment uses in the specific channel is configured; each user equipment generates the secondary spread-spectrum sequence according to the index of the configured secondary spread-spectrum sequences; each user equipment performing bit scrambling and digital modulation on thesecondary spread-spectrum sequences in turn to generate a modulation signal and spreads the spectrum of the modulation signal to obtain the uplink reference signal required to be transmitted; and each user equipment transmits the uplink reference signal to the base station through the specific channel. The method and the system for transmitting the uplink reference signal and the user equipment can reduce the channel cost of the uplink reference signal.
Description
technical field [0001] The present invention relates to mobile communication technology, in particular to a method and system for transmitting an uplink reference signal and user equipment. Background technique [0002] In the TD-SCDMA system, the base station (Node B) needs to continuously detect the spatial location of the user equipment (UE). This problem is solved by means of space division multiplexing. Specifically, the cell is divided into several Each UE in different subspaces periodically transmits uplink reference signals to the Node B, and the Node B receives and detects these uplink reference signals to determine the subspace where each UE is located, thereby determining the spatial position of each UE. [0003] figure 1 Schematic diagram for space division multiplexing. Such as figure 1 As shown, the four floors of a building are set as a cell, and each floor of the cell is divided into a subspace, and each subspace is equipped with an antenna. When UE1 is i...
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IPC IPC(8): H04J13/20H04B1/707
Inventor 常永宏赵训威白杰
Owner 北京万海云科技有限公司