Demodulation reference signal mode notifying method in long-term evolution system

A technology for demodulating reference signals and long-term evolution systems, applied in the field of 3GPP LTE systems, can solve problems such as no solutions, and achieve the effect of improving self-adaptive capabilities

Inactive Publication Date: 2009-02-11
ZTE CORP
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  • Demodulation reference signal mode notifying method in long-term evolution system
  • Demodulation reference signal mode notifying method in long-term evolution system
  • Demodulation reference signal mode notifying method in long-term evolution system

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[0021] Such as image 3 As shown, the specific steps of the notification method of the demodulation reference signal mode are as follows:

[0022] Step 301, when the base station needs to notify the demodulation reference signal mode to the terminal, the base station sets the demodulation reference signal mode of the terminal in the L1 / L2 (physical layer / data link layer) control channel and sends the L1 / L2 control channel information to terminal;

[0023] In the 3GPP system, there are 8 or 9 symbol blocks (SB) in the uplink subframe, and the positions of the symbol blocks used in the demodulation reference signal mode are generally fixed. When the demodulation reference signal mode uses one symbol block, the terminal uses a symbol block in the middle of the uplink subframe to send data on the uplink channel; when the demodulation reference signal mode uses two symbol blocks, the terminal uses a symbol in the middle of the uplink subframe block and the first symbol block to s...

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Abstract

The invention discloses a method for notifying a terminal of a demodulation reference signal mode in an LTE (Long-Term Evolution) system. A base station notifies the terminal of the demodulation reference signal when the base station detects that the terminal needs to be notified of the demodulation reference signal, thus improving the uplink demodulation adaptation ability of the LTE system. The method comprises the following steps: when the base station detects that the terminal needs to be notified of the demodulation reference signal, the base station sets the terminal demodulation reference signal mode of the terminal in a physical layer/data link layer control channel, and transmits the information of the physical layer/data link layer control channel to the terminal.

Description

technical field [0001] The present invention relates to a 3GPP LTE (Three Generation Partner Project Long Term Evolved) system, and in particular to a notification method of a demodulation reference signal mode in an LTE TDD (Time Division Duplex, Time Division Duplex) system. Background technique [0002] 3GPP LTE system see figure 1 , mainly composed of terminals, base stations and core networks. There can be logical or physical connections between base stations according to needs. The network composed of base stations is called Radio Access Network (RAN, Radio Access Network), which is responsible for access layer affairs, such as the management of wireless resources; uplink and downlink wireless resources are shared The way of the channel is scheduled by the base station. The base station is connected to the core network, and each base station can be connected to one or more core network nodes (CN, Core Network). The core network is responsible for non-access layer af...

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Application Information

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IPC IPC(8): H04Q7/38H04Q7/22H04B7/26
Inventor 曾清海喻斌
Owner ZTE CORP
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